Application Data - utcccs-cdn.com · Section 8 Catalog No. 04-51350003-01 Printed in U.S.A. Form...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-51350003-01 Printed in U.S.A. Form 35L,N-1XA Pg 1 1-09 Replaces: NewSection 8

Tab 8c

Application DataCONTENTS

PageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1MAJOR SYSTEM COMPONENTS . . . . . . . . . . . . . . . 1-3Dual-Duct Terminal Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 1Zone Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Supply Air Temperature (SAT) Sensor (33ZCSENSAT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Primary Air Temperature (PAT) Sensor (33ZCSENPAT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Space Temperature (SPT) Sensor . . . . . . . . . . . . . . . . 2Space Humidity Sensor (33ZCSENSRH-01). . . . . . . 2Air Quality Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Linear Averaging Flow Probe. . . . . . . . . . . . . . . . . . . . . 2Factory-Mounted Controls . . . . . . . . . . . . . . . . . . . . . . . 2CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5ComfortID™, VAV Controls (35LC,NC) . . . . . . . . . . . . 3• DESCRIPTION AND SPECIFICATIONS• SEQUENCE DESCRIPTION AND IDENTIFICATION• SYSTEM OPERATIONAnalog Electronic Controls (35LA,NA) . . . . . . . . . . . 4• DESCRIPTION AND SPECIFICATIONS• CONTROL PACKAGE OFFERINGS AND

IDENTIFICATION• CONTROLLER COMPONENTS AND WIRINGPneumatic Controls (35LP,NP) . . . . . . . . . . . . . . . . . . . 5• DESCRIPTION AND SPECIFICATIONS• CONTROLLER COMPONENTS AND WIRINGField-Supplied Direct Digital Controls or No Controls (35LN,NN). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5• DESCRIPTION AND SPECIFICATIONS• CONTROL PACKAGE OFFERINGS AND

IDENTIFICATIONAPPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Airflow Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6System Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6APPENDIX A — CONTROL PACKAGES COMFORTID™, VAV CONTROLS (35LC,NC) . . . 7-22APPENDIX B — CONTROL PACKAGES ANALOGELECTRONIC CONTROLS (35LA,NA). . . . . . . . . 23-25APPENDIX C — CONTROL PACKAGES, PNEUMATIC CONTROLS (35LP,NP) . . . . . . . . . . 26-49

SAFETY CONSIDERATIONS

GENERALThe 35L,N dual duct terminals are designed to maintain op-

timum temperatures in the conditioned zone by varying the airvolume supplied by the hot and cold supply ducts while pro-viding the proper discharge air temperature. Pressure indepen-dent pneumatic, analog electronic and direct digital electroniccontrol sequences are available for variable or constant volumeapplications.

The 35L (variable air volume only) unit features a com-pact design suited for variable air volume applications whereblending of hot and cold air is not required. Hot and cold air-streams are controlled by inlet airflow sensing for pneumatic,analog electronic, or direct digital control arrangements.

The 35N (variable or constant volume) unit features anintegral attenuator and hot/cold airstream blending chamber forprecise discharge temperature control. Hot and cold airstreamsare controlled by inlet airflow sensing for variable volume con-trol, or a combination of inlet airflow sensing, and dischargesensing for constant volume control with pneumatic, analog, ordirect digital control arrangements.

MAJOR SYSTEM COMPONENTS

Dual-Duct Terminal Unit (35L,N) — The 35L,Nunit casings are constructed of 22 gage (20 gage optional) zinccoated steel. Units can be equipped without a liner or insulated(dual density, foil lined and cellular insulation options avail-able). Both casing and liner options meet NFPA-90A (National

SAFETY NOTEAir-handling equipment will provide safe and reliable

service when operated within design specifications. Theequipment should be operated and serviced only by autho-rized personnel who have a thorough knowledge of sys-tem operation, safety devices and emergency procedures.

Good judgement should be used in applying anymanufacturer’s instructions to avoid injury to personnelor damage to equipment and property.

WARNING

Disconnect all power to the unit before performing mainte-nance or service. Unit may automatically start if power isnot disconnected. Electrical shock and personal injurycould result.

CAUTION

If it is necessary to remove and dispose of mercury contac-tors in electric heat section, follow all local, state, and fed-eral laws regarding disposal of equipment containinghazardous materials.

35L,NDual Duct Terminal Units

for Variable Air Volume (VAV) Systems

2

Fire Protection Association) and UL-181 (Underwriters Labo-ratories) standards. All units have round inlets, and rectangulardischarge connections. All round inlets have a raised collarbead to ensure tight inlet duct connections.

All units are equipped with a factory-installed airflow sens-ing device as a standard feature. The standard sensor is linear,multi-point, velocity averaging sensor with an amplified signal.Balancing taps are provided to allow for easy airflow verifica-tion. The probe offers a flow averaging capability and results inflow sensing capability equal to any competitive unit.

Zone Controller — A zone controller is a single-duct,variable air volume (VAV) terminal control with a factory-integrated controller and actuator. The zone controller main-tains precise temperature control in the space by operating theterminal fan (if supplied), regulating the flow of conditioned airinto the space, and controlling the auxiliary heating (if applica-ble). Buildings with diverse loading conditions can be support-ed by controlling reheat or supplemental heat.

A VAV fan terminal controller (33CFANTRM) is availablefor dual-duct terminals. When the VAV fan terminal zone con-troller is used in conjunction with a secondary terminal and the33ZCSECTRM secondary terminal zone controller, zone pres-surization applications can be supported.

Carrier’s linkage system is an integrated combination ofCarrier Comfort Network® (CCN) controllers for use with fan-powered air terminals. The single-duct terminal zone control-lers are part of the ComfortID™ system.

Supply Air Temperature (SAT) Sensor(33ZCSENSAT) — A supply air temperature sensor is re-quired for all ducted heating applications and stand-alone oper-ation. The sensor is optional on cooling only applications and isused for supply air monitoring. The sensor has an operatingrange of –40 to 245 F (–40 to 118 C). The sensor is factorywired to the controller and shipped in the control box. The SATmust be filled-installed in the duct downstream from theterminal.

Primary Air Temperature (PAT) Sensor(33ZCSENPAT) — The primary air temperature sensor isrequired on a linkage coordinator zone controller if the zonecontroller is not using a CCN linkage compatible air source.The sensor is used to monitor the equipment’s supply air tem-perature. The temperature can be broadcast to zone controllersthat receive information from a linkage coordinator. The sensorhas an operating range of –40 to 245 F (–40 to 118 C).

Space Temperature (SPT) Sensor — The spacetemperature sensor monitors room temperature changes andsends a signal to the zone controller to satisfy the amount ofconditioned air that is allowed into space. Thermostats are sup-plied separately as a field-installed accessory and are not in-cluded in the CCN package. The choices of sensors are listedbelow:• 33ZCT55SPT room temperature (RT) sensor, with over-

ride only• 33ZCT56SPT room temperature (RT) sensor, with set

point adjust and override• 33ZCT59SPT communicating room temperature liquid

crystal display (LCD) sensor with override and set pointadjustment.The 33ZCT55SPT space temperature sensor with override

button is required for all applications. The 33ZCT56SPT spacetemperature sensor with override button and set point adjust-ment can be used in place of the 33ZCT55SPT space tempera-ture sensor if local set point adjustment is required. The spacetemperature sensor accessory is ordered separately for field in-stallation. The temperature sensor uses a 10 kilo-ohm ther-mistor to sense ambient temperature. See Table 1.

Table 1 — Thermistor Resistance vs Temperature Values for Space, Return-Air, Outside-Air, and

Supply-Air Temperature Sensors

The 33ZCT59SPT communicating space temperature sen-sor with set point adjustment is a wall-mount sensor for usewith CCN. The sensor contains a custom liquid crystal display(LCD) that indicates room temperature and setpoint offset. Thesensor also features an override button and temperature offsetadjustment provided for control of features in the device towhich the sensor is connected. The wall sensor typically isused with the CCN system for temperature sensing, remotetimed override, and set point bias adjustment

Space Humidity Sensor (33ZCSENSRH-01) —The space humidity sensor measures the relative humidity ofthe air within the occupied space. The accessory space humid-ity sensor is field supplied and installed on an interior wall.

Air Quality Sensors — Three different CO2 sensors areavailable for optional demand control ventilation:• 33ZCSENCO2 indoor-air quality (IAQ) sensor is a wall-

mounted sensor with an LED (light-emitting diode) dis-play which monitors carbon dioxide levels

• 33ZCT55CO2 sensor is an indoor, wall-mounted sensorwithout display. The CO2 sensor also includes a spacetemperature sensor with override button.

• 33ZCT56CO2 sensor is an indoor, wall-mounted sensorwithout display. The CO2 sensor also includes a spacetemperature sensor with override button and temperatureoffset. The information on carbon dioxide levels is used to increase

the airflow to the zone and may also modify the position of theoutdoor-air dampers to admit more outdoor air as required toprovide the desired ventilation rate. The wall sensor is used tomonitor the conditioned space. The sensor uses infrared tech-nology to measure the levels of CO2 present in the air. The CO2sensors are factory set for a range of 0 to 2000 ppm and a linearvoltage output of 0 to 10 vdc. The sensor requires a separatefield-supplied 24 vac 25 va transformer to provide power.NOTE: The relative humidity sensor and CO2 sensor cannot beused on the same zone controller.

Linear Averaging Flow Probe — Each 35 Seriesunit is supplied with a linear averaging flow probe as a stan-dard feature. This probe offers a flow averaging capability andresults in flow sensing capability.

Factory-Mounted Controls — The 35L,N dual-ductterminal units are offered with a wide variety of factory-mount-ed controls that regulate the volume of air delivery from the

TEMP (C) TEMP (F) RESISTANCE (Ohms)–40 –40 335,651–35 –31 242,195–30 –22 176,683–25 –13 130,243–20 –4 96,974–15 5 72,895–10 14 55,298–5 23 42,315

0 32 32,6515 41 25,395

10 50 19,90315 59 15,71420 68 12,49425 77 10,00030 86 8,05635 95 6,53040 104 5,32545 113 4,36750 122 3,60155 131 2,98560 140 2,48765 149 2,08270 158 1,752

3

unit and respond to cooling and heating load requirements ofthe conditioned space. See Fig. 1 and 2.

These devices are available in both pneumatic and electron-ic arrangements. The ComfortID™ VAV electronic controlsare communicating PIC (product integrated controls) which areintegrated with the building system. The PIC controls are com-patible with the CCN network. A number of direct digital con-trol (DDC) packages by others are available for consignmentmounting, as indicated.

The 35L,N control offerings are identified as follows:• 35LA,NA: analog electronic• 35LC,NC: ComfortID™ VAV electronic controls

(compatible with CCN network)• 35LP,NP: Pneumatic• 35LN,NN: No controls or DDC by others

Pneumatic control units utilize a standard linear damper ac-tuator, which when combined with the 90-degree damper actu-ator, allows a simple switchover from normally open to nor-mally closed applications without moving any components.Units with electronic controls are available with an optionalfactory-supplied, mounted, and wired transformer, mountedinside the control enclosure.

CONTROLS

Each control approach offers a variety of operating func-tions and a control package number identifies combinations ofcontrol functions. The variety of function arrangements avail-able, circuit diagrams, operating sequences and function de-scriptions will be described below according to each controloffering.

ComfortID™, VAV Controls (35LC,NC)DESCRIPTION AND SPECIFICATIONS — The Com-fortID controls are factory-installed in a control enclosure.Factory-mounted transformers are available as an option.Thermostats are supplied separately as a field-installed ac-cessory. ComfortID control packages must be used in com-bination with a thermostat. Thermostats are not included inthe package.

All control arrangements include a standard linear inlet flowsensor, control enclosure, controller/actuator and duct tempera-ture sensor. Several types of room sensors may be ordered,with and without set point adjustment, and with integral CO2sensors.SEQUENCE DESCRIPTION AND IDENTIFICATION —The 35LC,NC units are furnished with factory-installed Com-fortID controls for integration into the Carrier Comfort Net-work® system. Factory-mounted transformers are available asan option. The CCN package includes:• sheet metal control enclosure• airflow probe and transducer• controller/actuator• supply air temperature sensor

Each control package is a unique combination of functionsfor use of the 35LC,NC air terminal in an air system. All Com-fortID arrangements match the control package number andcorresponding sequence description as shown in Tables 2 and3. Wiring diagrams and operation sequence descriptions foreach of these control packages are shown in Appendix A.

Table 2 – 35LC Control Function Identification

Table 3 – 35NC Control Function Identification

A zone controller and slave controller are factory-mountedon the 35LC,NC units. The zone controller monitors a differen-tial pressure signal as airflow enters the box. This differentialsignal is compared to a set point to provide pressure indepen-dent control of the air passing through the terminal. The slavecontroller follws the commands of the zone controller. The35LC,NC terminals with ComfortID™ controls consists of alinkage coordinator (LC) and a zone controller. The linkage co-ordinator is remote-mounted on the control networkSYSTEM OPERATION — When using the ComfortID con-trols, ambient temperature can be measured and regulated us-ing a wall sensor. The wall sensor is equipped with a push but-ton which when pressed will override the unoccupied timeschedule and cause the zone to be controlled to the occupied setpoints for a preconfigured period of time. This time period maybe preconfigured for a period of 1 to 4 hours in one-hourincrements.

Fig. 1 — 35L Dual Duct Variable VolumeTerminal Unit

Fig. 2 — 35N Dual Duct Constant Volume orVariable Volume Terminal Unit

CONTROLPACKAGENUMBER

SEQUENCE DESCRIPTIONAND IDENTIFICATION

4160 Constant volume dual duct

4190 Variable air volume (VAV) with demand controlled ventilation (DCV) requires separate CO2 sensor



4160 Constant volume dual duct

4170 Variable volume dual duct, constant minimum cool-ing (requires cold deck inlet and total flow probe)

4175Variable volume dual duct, cooling close-off during heating (requires hot deck inlet and total flow probe)

4180 Constant ventilation dual duct, Cooling only (requires cold deck inlet and total flow probe)

4190 Variable air volume (VAV) with demand controlled ventilation (DCV) requires separate CO2 sensor

4

Analog Electronic Controls (35LA,NA)DESCRIPTION AND SPECIFICATIONS — The analogelectronic controls for the terminals are furnished with analogcontrols by Kreuter. Each analog 35LA,NA unit has pressureindependent controls which include the following:• sheet metal control enclosure• flow probe• thermostat• damper actuator and analog controller

By combining a basic flow control with optional functiondevices and an integral electric actuator, the controller providesboth hot and cold inlet control. All analog control arrangementsinclude a standard linear inlet flow sensor, 24-v transformer,control enclosure and wall thermostat to match the control typeas shown in Tables 4 and 5.

Table 4 – 35LA Control Function Identification

Table 5 – 35NA Control Function Identification

CONTROL PACKAGE OFFERINGS AND IDENTIFICA-TION — The electronic analog control system is pressure in-dependent volume reset control that uses a Krueter CSP-5001/5002 VAV controller-actuator. See Fig. 3. The system providesindependently adjustable set points for minimum, maximum,and auxiliary airflow limits. The applied volume controller andinlet duct conditions limit the flow range of each size. Airflowis sensed by using a single or multi-point differential (velocity)pressure measuring station or pitot tube (such as an SSS-1000series airflow sensor). Typically, the airflow range for each sizeis between 0 to 3,300 fpm through the inlet of the terminal unitwith an accuracy of 3%.

The KMC CTE-5100 electronic room thermostat series isdesigned for use with the CSP-5001/5002 flow controller/actu-ator. The thermostat operates on a 16 vdc (14 to 20 vac) powersupply from the controller and outputs a 0 to 10 vdc signals onthe T terminals: T1 in the cooling mode (direct acting) and T2in the heating mode (reverse acting). In general, T1 and T3 areused for the cooling mode, T2 and T4 for heating. Terminals T3and T4 have fixed 0 to 10 vdc output signal. A single trans-former which can be wired 120/208/277 v primary and a 24 vsecondary may be used as an option.

Room temperature control is provided by the associatedroom thermostat which is selected according to the application.The room thermostat provides a fixed hysteresis of 2° F regard-less of the minimum and maximum velocity limit set points.Adjustments for the minimum and maximum airflows aremade at the thermostat.NOTE: Transformers for cooling only and hot water reheatunits must be specified at time of order.



2400 Heating and cooling control, hot and cold inlet airflow sensing



2400 Heating and cooling control, hot and cold inlet air-flow sensing

2440 Heating and cooling control, hot inlet and dis-charge airflow sensing

2470 Heating and cooling control, cold inlet and dis-charge airflow sensing

(38)1-1/2

(132)5-3/16

(155)6-7/64

(24)15/16

(102)

(13)

4

1/2(13)

1/2(13)

3/16 (5)SLOTS

GEARDISENGAGEMENT

BUTTON

NON-ROTATION SLOT FOR FIELD ADAPTABLE AUXILIARY SWITCH

DIFFERENTIALPRESSURE PORTS3/16 (5) DIA. (2)

0.51 (13)DIA.

ADJUSTABLEEND STOPS

3 1/8(79)

5/16-18SETSCREWS (2)

ACCESSDOOR

5/8 (16) DIA. WIRE ACCESSSHUTTER BUSHINGS

NON-ROTATION TAB

NON-ROTATIONBRACKET

DRIVER SHAFTDRIVE HUB

1/2

Fig. 3 — VAV Controller/Actuator Specifications

NOTE: Dimensions are in inches. Dimensions in parenthesis are in millimeters.

5

Control packages for the 35LA,NA units are completelywired at the factory, except for the wall thermostat which is fur-nished, not wired. The control packages correspond directlywith the ordering procedure and price pages.CONTROLLER COMPONENTS AND WIRING — Thediagrams on various analog control sequences show the detailwiring of the controller and the control component list, togetherwith the temperature/airflow diagram and the operating se-quence. See Appendix B.

Pneumatic Controls (35LP,NP)DESCRIPTIONS AND SPECIFICATIONS — The35LP,NP units have pneumatic control of fan-powered termi-nals for both constant volume and variable volume distributionsystems. Pneumatic controls can be furnished to provide a vari-ety of functions. Each set of functions is assigned a controlpackage number and its specified control sequence identifica-tion as shown in Tables 6 and 7. All control packages are pres-sure independent (unless otherwise noted) and available withor without dual maximum airflow, cooling maximum airflowand dual minimum airflow. All control arrangements include astandard linear inlet flow sensor

Table 6 — 35LP Control Function Identification

LEGENDDA — Direct-Acting ThermostatRA — Reverse-Acting ThermostatNO — Normally Open Damper PositionNC — Normally Closed Damper PositionNOTE: The single function controller provides single functions, i.e.,DA-NO. Multi-function controllers are capable of providing DA-NO,DA-NC, RA-NC or RA-NO functions.

CONTROLLER COMPONENTS AND WIRING — Thediagrams on various pneumatic control sequences show thedetail wiring of the controller and the control component list,together with the temperature/airflow diagram and the operat-ing sequence. See Appendix C.

Field-Supplied Direct Digital Controls or NoControls (35LN,NN)DESCRIPTION AND SPECIFICATIONS — Control pack-ages are field-supplied for factory mounting, unless otherwisenoted. All DDC control arrangements include a standard linearinlet flow sensor, optional transformer to 24 volts, and controlenclosure.

All no control arrangements include a standard linear inletflow sensor.CONTROL PACKAGE OFFERINGS AND IDENTIFICA-TION — Each set of functions is assigned a control packagenumber and its specified control sequence identification asshown in Table 8.

Table 7 — 35NP Control Function Identification

LEGENDDA — Direct-Acting ThermostatRA — Reverse-Acting ThermostatNO — Normally Open Damper PositionNC — Normally Closed Damper PositionNOTE: The single function controller provides single functions, i.e.,DA-NO. Multi-function controllers are capable of providing DA-NO,DA-NC, RA-NC or RA-NO functions.

Table 8 — 35LN,NN Control Function Identification

* For units without electric heat requiring a 24 v control transformer:the control transformer must be ordered from the unit accessorieslist in Quote Builder.


SEQUENCE DESCRIPTION AND IDENTIFICATION

1500 Multi-function controller, DA-NC cold inlet, NC hot inlet

1501 Multi-function controller, DA-NC cold inlet, NO hot inlet

1502 Multi-function controller, DA-NO cold inlet, NO hot inlet

1503 Multi-function controller, DA-NO cold inlet, NC hot inlet

1504 Multi-function controller, RA-NC cold inlet, NC hot inlet

1505 Multi-function controller, RA-NC cold inlet, NO hot inlet

1506 Multi-function controller, RA-NO cold inlet, NO hot inlet

1507 Multi-function controller, RA-NO cold inlet, NC hot inlet


SEQUENCE DESCRIPTION AND IDENTIFICATION



























0000 Terminal Only – No ControlD000 Terminal with Control Box Only*

D001 Terminal with Control Box Electric Heatand 24 v Transformer

XXXX By Quote

6

APPLICATION DATASeveral factors should be considered when selecting dual

duct VAV units.

Airflow Range — Carrier dual duct VAV units areequipped with a linear averaging flow probe in the unit inlet toallow pressure-independent control of airflow on the basis of acontrol signal. The flow range is limited by the sensitivity ofthe controller employed; the inlet duct conditions; and the sizeof the selected unit.

In most cases, inlet duct minimum airflow of less than350 fpm should be avoided to prevent erratic control. A mini-mum flow less than 350 fpm results in pressure signals lessthan 0.01 in. wg, which cannot be resolved reliably by mostcontrol systems. ComfortID™ systems will allow a lower min-imum cfm.

Maximum inlet flow limits are typically restricted to lessthan 2500 fpm by duct pressure loss limitations, althoughacoustical limits may also limit selection above this range. The45 Series units will operate well up to 3000 fpm inlet velocityand 6 in. wg inlet pressure, but with increased pressure dropthrough the supply duct and high noise levels.

System Pressure — Control of duct pressures is themost effective means of ensuring low noise levels, accurateflow control, and minimum energy use. The use of various fan-tracking techniques can ensure optimum system efficiency andoperation. Response times of the fan tracking system should beadjustable in order to prevent system oscillations between thepressure independent controllers and the fan system.

Minimum inlet static pressure is the pressure required bya given size box at a specified airflow with the unit damperwide open. This pressure was measured by tests conducted inaccordance with ARI (Air Conditioning and Refrigeration In-stitute) Standard 880-98, using 3 ft of discharge duct of thesame size as the unit plenum. The pressure shown is for theunit only or for unit plus hot water coil or electric heat coil. Todetermine the total static pressure loss in the distribution sys-tem, the minimum inlet static pressure must be added to theduct pressure drop (both upstream and downstream of the 45Series unit) and the outlet pressure drop.

Acoustics — The primary determinant to terminal acous-tics is the inlet and duct size and static pressure. Velocity (flowrate) is also a factor. System sound can be limited by reducingduct pressures in the branch duct supplying the unit.

Lined duct downstream of the unit is very effective in re-ducing discharge noise levels. System noise is increased whenlined duct is not used. Reduced inlet pressure drop will help,provided the techniques used to reduce local duct pressure lev-els do not increase noise levels in the duct that will be carriedinto the space. If a discharge attenuator is employed to reduce

discharge sound, it should be located far enough away from theunit fan that the resultant high velocity/turbulent airflow doesnot create noise entering the silencer.

Radiated sound is the most predominant problem with se-ries fan powered terminals, especially when the fan is operat-ing. Keeping the unit at the lowest possible fan speed will pro-duce less sound in the space. Inlet silencers are seldom effec-tive with well-designed fan terminals, especially at the lowfrequencies where problems are usually found. The 45 Seriesunits have, in effect, a silencer built into the induction port.

Acoustic performance data for 35L,N units are based ontests conducted in accordance with ARI Standard 880-98. Datais presented as sound power for the units indicated. Applicationsound levels are provided as NC levels. These are determinedby applying factors provided in ARI Standard 885-98, as indi-cated. Lined duct, ceiling effect, and room attenuation are typi-cal for many office spaces. These assumptions, for discharge(airborne) sound, also include a typical end reflection effect.Alternate effects can be examined by using the air terminalbuilder program or ARI Standard 885-98, available at nocharge from ARI’s web page (www.ari.org).

The supplied application data assumes that the soundpower levels are split, based on a fixed cfm maximum per split,as indicated. This assumes, however, that split flows are not di-rected to the same conditioned space. When two split flows aresupplied to the same space, the effect of power splits is oftennegated, depending on the location of the supply outlets andthe observer.

The addition of electric or hot water heat has little effecton sound power levels, either discharge or radiated. Sound datapresented for the unit is based on inlet pressure drop vs. soundgenerated. With series flow units, external pressure drop has lit-tle effect on the sound produced by the unit.

Linings other than fiberglass can have a significant effecton unit sound power levels. Refer to the Air Terminal Builderselection program for information regarding alternate linings.

If both the diffuser and the terminal are selected at thesame delivered sound power level, the discharge (airborne)sound levels should be combined, by octave band, with thesound power generated by the selected diffuser when predict-ing sound levels in the space. In many cases, diffusers generatehigher frequency sound than the terminal, and the two powerlevels combine without raising the room NC level. Each appli-cation of unit and diffuser must be examined individually toverify that the net NC does not increase. (Equal sound powerlevels, when added, increase the sound level by 3 dB.) NOTE: Refer to Carrier publication: HVAC Acoustical Appli-cation Guidelines (Catalog No. 811-449) for additionalinformation.

7

APPENDIX A — CONTROL PACKAGES, COMFORTID™, VAV CONTROLS (35LC,NC)

CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET

PAGE NUMBERJOB NUMBER

BUYER

DRAWING NUMBER

CODETHIS DOCUMENT IS THE PROPERTY OFCARRIER CORPORATION AND IS DELIVEREDUPON THE EXPRESS CONDITION THATTHE CONTENTS WILL NOT BE DISCLOSEDO R U S E D W I T H O U T C A R R I E RCORPORATION’S WRITTEN CONSENT

SUBMISSION OF THESEDRAWINGS OR DOCUMENTSDOES NOT CONSTITUTEPA RT P E R F O R M A N C EO R A C C E P TA N C E O FCONTRACT

12/1/2008

3 5 L / N - C - 4 1 6 0

PRODUCT INFORMATION IS SUBJECT TO CHANGE WITHOUT NOTICE.

ComfortID™CONSTANT VOLUME

DUAL DUCT

35LC,NC

1 OF 3

ComfortID™ CONSTANT VOLUME DUAL DUCTCONTROL PACKAGE NO. 4160

LeavingAir

DAMPERACTUATOR

DAMPER

ACTUATOR

ZONE

CONTROLLER

SLAVE

CONTROLLER

SPACE

TEMPERATURE

SENSOR

COOL AIR

HEATED AIR

24 VAC

CCN BUS

Optional Supply

Air Sensor

Figure 1 - Dual Duct Terminal Constant Volume Cooling and Heating

Application:Dual duct units are designed to provide accurate tempera-ture control while maintaining a constant airflow to thespace. A typical application is shown in Fig. 1. These termi-nals require a low minimum inlet static pressure, permittingthe use of smaller, more energy efficient fan systems. A wallmounted space temperature (SPT) sensor located in eachzone will sense load requirements and activate the controlsequence to accommodate cooling and heating. Loadrequirements and sound level acceptability govern terminalsizing. This control package provides the followingsequences of operations:

A. Cooling and heating: (refer to numbers on flow diagramFig 2). This mode is available whenever a cool mode sig-nal is received from an air source equipped with CCN(Carrier Comfort Network®) controls, or the zone determines the air source is operating in a cool mode.

1. Between 1 and 2, maximum cooling airflow isestablished by the user defined maximum cooling airflow setpoint until the zone comes under controlat 2. (Note: the maximum cooling airflow setpoint should equal or exceed the constant volume airflow setpoint so that hot deck airflow is reduced to zero)

2. Beginning at 2, the cooling airflow is regulated overa throttling range by the cold deck damper until theminimum cooling airflow setpoint is reached at 3.The heating airflow is modulated by the hot deckdamper, inversely to the cooling airflow, so that thetotal airflow to the zone remains constant.

3. Between 3 and 4, should the zone temperaturecontinue to fall the cold deck damper will hold the user defined minimum cooling airflow setpoint,while the hot deck damper will modulate to maintainthe difference between the cold deck minimum airflow and the desired constant volume airflow setpoint.

8

APPENDIX A — CONTROL PACKAGES, COMFORTID™, VAV CONTROLS (35LC,NC) (cont)

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 L / N - C - 4 1 6 02 OF 3

%AIRFLOW

100%

0%MIN COOL/HEAT LIMIT

MAX COOL/HEAT LIMIT(DAMER OVERRIDE

PRESSURIZATION MODE)

MRAWLOOC DAMPER

OVERRIDE

EVACUATION

MODE

OCCUPIED

HEATING &

MORNING

WARM-UP

SETPOINT

NTFC

SETPOINT

OCCUPIED

COOLING

SPACE TEMPERATURE

12

34

LEGEND

NTFC -- Night time free cooling

- - - - - Primary Air Source Providing Heated Air

--------- Primary Air Source Providing Cooled Air

MIN COOL IF NOT ZERO

MAX HEAT IF MIN COOL NOT ZERO

Figure 2 - Constant Volume Sequence of Operation of a Dual Duct Terminal

4. It must be noted that the minimum cooling airflowsetpoint should be set at zero if ventilation air isintroduced into both the hot and cold decks. In thiscase, the cold deck damper will hold a fully closedposition while the hot deck damper will open toprovide maximum heating airflow (at a flow rate asspecified by the constant volume airflow setpoint).

B. Morning Warm-up (when the primary air source [colddeck] is cooling, refer to numbers on flow diagram):The cold deck damper will maintain the minimum cool-ing airflow while the hot deck damper will modulate tomaintain the difference between the constant volumeairflow setpoint and the cooling airflow.

C. Unoccupied Time Period (cooling / heating):When the unoccupied period is reached, the userdefined occupied cooling setpoint is reset upward to auser defined unoccupied cooling setpoint. Both hotdeck and cold deck dampers will throttle in the samemanner (as per A) during the unoccupied period, usingthe unoccupied cooling setpoint.

D. Night Time Free Cooling:The logic calculates a nighttime free cooling (NTFC) tem-perature set point halfway between the occupied heat-ing and occupied cooling temperature setpoints. Uponreceiving a NTFC signal generated by the air sourceequipped with CCN controls (or the zone determines theair source is operating in the NTFC mode), the cold deckand hot deck dampers will modulate (as per A) to main-tain the zone’s NTFC temperature setpoint.

E. Primary Air Source Shuts Off:

1. Both cold deck and hot deck dampers will fullyclose and the control will recalibrate both airflowtransducers.

If the primary air source remains off (no primaryair), both dampers will be repositioned to at least 60% open to allow the air sources to restart properly.

12/1/2008

2.

9


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



3 5 L / N - C - 4 1 6 0


3 OF 3

ComfortID™CONSTANT VOLUME

DUAL DUCT

12/1/2008

35LC,NC

10

APPENDIX A — CONTROL PACKAGES, COMFORTID™, VAV CONTROLS (35NC) (cont)

CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



12/1/2008

3 5 N - C - 4 1 7 0


ComfortID™ VARIABLE VOLUMEDUAL DUCT WITH CONSTANT

MINIMUM COLD DECK AIRFLOW

35NC

1 OF 3

ComfortID™ VARIABLE VOLUME DUAL DUCTWITH CONSTANT MINIMUM COLD DECK AIRFLOWCONTROL PACKAGE NO. 4170

Leaving

Air

DAMPER

ACTUATOR

DAMPER

ACTUATOR

ZONE

CONTROLLER

HEAT

ACTUATOR

SPACE

TEMPERATURE

SENSOR

COOL AIR

HEATED AIR

24 VAC

CCN BUS

Supply

Air Sensor

Figure 1 - Dual Duct Terminal Variable Volume Cooling and Heating

Application:Dual duct units are designed to provide accurate variableair volume (VAV) temperature control in both heating andcooling modes with a minimum amount of energy consump-tion. Typically systems used with this control package provideall the ventilation air though the cold deck only. This controlpackage provides VAV cooling operation and VAV heatingwith variable air temperature. The control will maintain theminimum cooling airflow setpoint during heating to providethe required ventilation to the space. A typical application isshown in Fig.1. These terminals require a low minimum inletstatic pressure, permitting the use of smaller, more energyefficient fan systems. A wall mounted space temperature(SPT) sensor located in each zone will sense load require-ments and activate the control sequence to accommodatecooling or heating. Load requirements and sound levelacceptability govern terminal sizing. With the airflow sensorlocated in the primary inlet, this control package providesthe following sequences of operation:

A. Cooling (when the primary air source [cold deck] iscooling, refer to numbers on flow diagram Fig. 2):

1. Between 1 and 2, maximum flow is established bythe user defined maximum cooling airflow setpointuntil the zone comes under control at 2.

2. Beginning at 2, the flow is regulated over a throttlingrange by the primary air damper until the minimumcooling airflow setpoint is reached at 3.

3. Between 3 and 4, should the zone temperaturecontinue to fall the damper will hold the userdefined minimum cooling airflow setpoint.

4. It must be noted that the minimum cooling airflowsetpoint could be set to zero by the user. In thiscase, the damper will hold a fully closed position ifthe zone temperature continues to fall.

11


BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 N - C - 4 1 7 02 OF 3

%AIRFLOW

100%

0%MIN HEAT

MAX COOL LIMIT(DAMER OVERRIDE


MRAWLOOC DAMPER

OVERRIDE

EVACUATION

MODE

OCCUPIED

HEATING &

MORNING

WARM-UP

SETPOINT

NTFC

SETPOINT

OCCUPIED

COOLING

SPACE TEMPERATURE

12

34

LEGEND


- - - - - Providing Heated Air

Providing Cooled Air


MAX HEAT DETERMINED BY SAT

4'5REHEAT LIMIT

Hot DeckCold Deck

(10% NOMINAL BOX CFM)

Figure 2 - Constant Volume Sequence of Operation of a Dual Duct Terminal (4170)

B. Heating (when the primary air source [cold deck] iscooling, refer to numbers on flow diagram Fig. 2): Theinstaller is responsible for proper selection of the‘reheat’ airflow setpoint. It should be set to provide10% of the nominal terminal airflow to obtain properheating operation.

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating modeis in effect at 4’.

2. At 5, the cold deck airflow is increased to theuser defined airflow setpoint. The hot deck damperwill modulate as required to maintain the calcu-lated discharge air temperature setpoint. The max-imum temperature is clamped at a user definedmaximum value.

3. When the zone temperature rises above the occu-pied heating setpoint, the hot deck damper modu-lates closed and the ventilation mode isreactivated at 4. The cold deck airflow is reducedto the minimum cooling airflow setpoint.

C. Unoccupied Time Period (Cooling / Heating):When the unoccupied period is reached, the user

defined occupied cooling setpoint is reset upward to auser defined unoccupied cooling setpoint. Both hotdeck and cold deck dampers will throttle in the samemanner (as per A & B) during the unoccupied period,using the unoccupied setpoints.

D. Nighttime Free Cooling:The logic calculates a nighttime free cooling (NTFC)temperature setpoint halfway between the occupiedheating and occupied cooling temperature setpoints.Upon receiving a NTFC signal generated by the airsource equipped with CCN (Carrier Comfort Network®) controls (or the zone determines the air source is operating in the NTFC mode), the cold deck damper will modulate (as per A) to maintain the zone’s NTFC temperature setpoint.

E. Primary air source shuts off:

The cold deck damper will fully close and the controlwill recalibrate the airflow transducer.

If the primary air source remains off (no cold deck pri-mary air), the cold deck damper will be repositioned to at least 60% open to allow the air source to restartproperly.

12/1/2008

Hot Deck Providing Heated AirCold Deck Providing Cooled Air

(10% NOMINAL BOX CFM)

12


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



3 5 N - C - 4 1 7 0


35NC

3 OF 3

ComfortID™ VARIABLE VOLUMEDUAL DUCT WITH CONSTANT

MINIMUM COLD DECK AIRFLOW

12/1/2008

13


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



12/1/2008

3 5 N - C - 4 1 7 5


ComfortID™ VARIABLEVOLUME DUAL DUCT WITH

COLD DECK CLOSEOFF

35NC

1 OF 3

ComfortID™ VARIABLE VOLUME DUAL DUCTWITH COLD DECK CLOSE-OFFCONTROL PACKAGE NO. 4175

Leaving

Air

DAMPER

ACTUATOR

DAMPER

ACTUATOR

ZONE

CONTROLLER

HEAT

ACTUATOR

SPACE

TEMPERATURE

SENSOR

COOL AIR

HEATED AIR

24 VAC

CCN BUS

Supply

Air Sensor

Figure 1 - Dual Duct Terminal Variable Volume Cooling and Heating

Application:Dual duct units are designed to provide accurate variable airvolume (VAV) temperature control in both heating and cool-ing modes with a minimum amount of energy consumption.A typical system used with this control package providesventilation air though both the hot and cold decks. This con-trol package provides VAV cooling operation and variable airtemperature heating. It will reduce the cold deck (cooling)airflow to zero during maximum heating to eliminate energywaste. A typical application is shown in Fig. 1. These termi-nals require a low minimum inlet static pressure, permittingthe use of smaller, more energy efficient fan systems. A wallmounted space temperature (SPT) sensor located in eachzone will sense load requirements and activate the controlsequence to accommodate cooling or heating. Load require-ments and sound level acceptability govern terminal sizing.With the airflow sensor located in the primary inlet. This con-trol package provides the following sequences of operation:

A. Cooling (when the primary air source [cold deck] is cooling, refer to numbers on flow diagram Fig. 2):


2. Beginning at 2, the flow is regulated over a throt-tling range by the primary air damper until the mini-mum cooling airflow setpoint is reached at 3.

3. Between 3 and 4, should the zone temperaturecontinue to fall the damper will hold the userdefined minimum cooling airflow setpoint.

4. It must be noted that the minimum cooling airflowsetpoint could be set to zero by the user. In thiscase, the damper will hold a fully closed position ifthe zone temperature continues to fall.

B. Heating (when the primary air source [cold deck] iscooling, refer to numbers on flow diagram Fig. 2): Theinstaller is responsible for proper selection of the ‘reheat’airflow setpoint. (it should be set to provide at least 50% of the maximum cooling airflow to obtain proper heatingoperation).

14


BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 N - C - 4 1 7 52 OF 3

%AIRFLOW

100%

0%MIN HEAT

MAX COOL LIMIT(DAMER OVERRIDE


MRAWLOOC DAMPER

OVERRIDE

EVACUATION

MODE

OCCUPIED

HEATING &

MORNING

WARM-UP

SETPOINT

NTFC

SETPOINT

OCCUPIED

COOLING

SPACE TEMPERATURE

12

34

LEGEND


- - - - - Providing Heated Air--------- Providing Cooled Air


MAX HEAT DETERMINED BY SAT

REHEAT LIMIT

4'

Hot DeckCold Deck

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating modeis in effect at 4’.

2. The total discharge airflow is increased to theuser defined (‘reheat’) airflow setpoint. This valueshould be set between 50% and 100% of the max-imum cooling airflow limit. The hot deck damperwill modulate open as required to maintain the cal-culated discharge air temperature setpoint whilethe cold deck damper will modulate closed tomaintain the discharge airflow at the ‘reheat’ air-flow setpoint. The maximum setpoint temperatureis clamped at a user defined maximum value.

3. When the zone temperature rises above the occu-pied heating setpoint, the hot deck damper modu-lates closed and the ventilation mode isreactivated at 4. The cold deck airflow is reducedto the minimum cooling airflow setpoint.

C. Unoccupied Time Period (cooling / heating):When the unoccupied period is reached, the userdefined occupied cooling setpoint is reset upward to a

user defined unoccupied cooling setpoint. Both hotdeck and cold deck dampers will throttle in the samemanner (as per A & B) during the unoccupied period,using the unoccupied setpoints.

D. Night Time Free Cooling:The logic calculates a nighttime free cooling (NTFC)temperature set point halfway between the occupiedheating and occupied cooling temperature setpoints.Upon receiving a NTFC signal generated by the airsource equipped with CCN (Carrier Comfort Network®) controls (or the zone determines the air source is operatingin the NTFC mode), the cold deck damper will modulate (as per A) to maintain the zone’s NTFC temperature setpoint.

E. Primary air source shuts off:

1. The cold deck damper will fully close and the con-trol will recalibrate the airflow transducer.

2. If the primary air source remains off (no cold deckprimary air), the cold deck damper will be reposi-tioned to at least 60% open to allow the airsource to restart properly.

12/1/2008

Figure 2 - Sequence of Operation (4175)

15


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



3 5 N - C - 4 1 7 5


35NC

3 OF 3

ComfortID™ VARIABLEVOLUME DUAL DUCT WITH

COLD DECK CLOSEOFF

12/1/2008

16


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



12/1/2008

3 5 N - C - 4 1 8 0


ComfortID™ VARIABLEVOLUME DUAL DUCT WITH CONSTANT VENTILATION

35NC

1 OF 3

ComfortID™ VARIABLE VOLUME DUAL DUCTWITH CONSTANT VENTILATIONCONTROL PACKAGE NO. 4180

Leaving

Air

DAMPER

ACTUATOR

DAMPER

ACTUATOR

ZONE

CONTROLLER

SECONDARY

CONTROLLER

SPACE

TEMPERATURE

SENSOR

CONDITIONED

AIR

VENTILATION

AIR

24 VAC

CCN BUS

Optional space or

ducted heat source

Optional supply air

sensor for ducted

heat source

Figure 1 - Dual Duct Terminal Cooling and Ventilation Air

Application:Dual duct units are designed to provide accurate variableair volume (VAV) temperature control with a minimumamount of energy consumption. A typical system used withthis control package provides all the ventilation air though aseparate OA system. The ventilation air is conditioned(heated/cooled/dehumidified) as required to provide a neu-tral temperature. The ventilation air is connected to the hotdeck inlet of the terminal. The control package provides VAVcooling operation and constant volume ventilation. It willmaintain the ventilation airflow setpoint at all times to pro-vide the required ventilation to the space. Field supplied andinstalled perimeter or ducted heating may additionally becontrolled. A typical application is shown in Fig. 1. These ter-minals require a low minimum inlet static pressure, permit-ting the use of smaller, more energy efficient fan systems. Awall mounted space temperature (SPT) sensor located ineach zone will sense load requirements and activate thecontrol sequence to accommodate cooling or heating. Loadrequirements and sound level acceptability govern colddeck inlet sizing while ventilation requirements govern thehot deck inlet sizing. This control package provides the fol-lowing sequences of operation:

A. Cooling (when the primary air source [cold deck] is cooling, refer to numbers on flow diagram Fig. 2):


2. Beginning at 2, the primary airflow is regulatedover a throttling range by the primary air damperuntil the minimum cooling airflow setpoint isreached at 3.

3. Between 3 and 4, should the zone temperaturecontinue to fall, the damper will hold the userdefined minimum cooling airflow setpoint.

4. It must be noted that the minimum cooling airflowsetpoint should be set to zero by the user. In thiscase, the damper will hold a fully closed positionand only ventilation air will be supplied to thespace.

B. Local heating (field-supplied heating coil downstream):When the primary air source is cooling and a field sup-plied heating coil is provided downstream (refer to num-bers on flow diagram Fig. 2). The installer is responsible forproper selection of the ‘reheat’ airflow setpoint (it shouldbe set to meet the heating requirements of the space orthe minimum airflow requirements of the heatingdevice).

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating mode isin effect at 4'.

2. At 5, the primary airflow is increased to theuser defined airflow setpoint. The hot deck damperwill modulate as required to maintain the ventilationsetpoint. The heating device will open/modulateopen/or stage up as required to maintain the dis-charge air temperature setpoint. The device will becontrolled so as not to exceed the user definedmaximum supply air temperature limit.

3. When the zone temperature rises above the occu-pied heating setpoint, the heating device will close/ modulate closed/stage down and the ventilation

17


BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 N - C - 4 1 8 02 OF 3

%AIRFLOW

100%

0%MIN COOL LIMIT

MIN HEAT LIMIT

REHEAT LIMIT

MAX HEAT LIMIT

MAX COOL LIMIT

(DAMER OVERRIDE

PRESSURIZATION

MODE

MRAWLOOC DAMPER

OVERRIDE

EVACUATION

MODE

OCCUPIED

HEATING &

MORNING

WARM-UP

SETPOINT

NTFC

SETPOINT

OCCUPIED

COOLING

SPACE TEMPERATURE

12

34

5

4'

6

ON OFF

OPTIONAL

HEAT

SOURCE

LEGEND



Primary Air Source Providing Cooled Air

mode is reactivated at 4. The primary airflow is maintained at the minimum cooling airflow setpoint(normally zero) and the hot deck will maintain the ventilation airflow setpoint.

C. Local heating: (field supplied perimeter type heating)When the primary air source is cooling and a field sup-plied perimeter heating device [electric baseboard ortwo position water valve] is provided, refer to numberson flow diagram). The installer is responsible for settingthe ‘reheat’ airflow setpoint to zero.

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating modeis in effect at 4'.

2. At 5, the primary airflow flow is maintained at minimum (or zero). The hot deck damper will modulate as required to maintain the ventilationsetpoint. The perimeter heating device will operateas required to maintain the space temperature setpoint.

3. When the zone temperature rises above the occu-pied heating setpoint, the heating device will bedisabled and the ventilation mode is reactivated at4. The primary airflow remains at minimum (orzero) and the hot deck will maintain the ventilationairflow setpoint.

D. Morning Warm-Up (if configured to provide variablevolume heating): upon receiving a morning warm-upsignal generated by the air source equipped with CCN(Carrier Comfort Network®) controls, the cold deck damper will go to the maximum heating airflow setpointif the zone temperature is below the occupied heating setpoint at 6. This allows the warm primary air to be delivered to the zone. As the zone temperature rises above the occupied heating setpoint, the damper will move toward the minimum heating airflow setpoint at 4'.

During this cycle, the hot deck damper will modulate as required to maintain the ventilation setpoint.

E. Unoccupied Time Period (cooling):When the unoccupied period is reached, the userdefined occupied cooling setpoint is reset upward to auser defined unoccupied cooling setpoint. Thedampers will throttle in the same manner (as per A)during the unoccupied period, using the unoccupiedcooling setpoint.

F. Unoccupied Time Period (heating):When the unoccupied period is reached, the userdefined occupied heating setpoint is reset downward toa user defined unoccupied heating setpoint. Thedampers will operate in the same manner (as per B,C,or D) during the unoccupied period, using the unoccu-pied heating setpoint.

G. Nighttime Free Cooling:The logic calculates a nighttime free cooling (NTFC)temperature set point halfway between the occupiedheating and occupied cooling temperature setpoints.Upon receiving a NTFC signal generated by the airsource equipped with CCN controls (or the zone determines the air source is operating in the NTFC mode), the colddeck damper will modulate (as per A) to maintain the zone’s NTFC temperature setpoint.

H. Primary air source shuts off:

1. Both cold deck and hot deck dampers will fullyclose and the control will recalibrate the airflowtransducers.

If the primary air source remains off (no cold deckprimary air), both dampers will be repositioned toat least 60% open to allow the air sources torestart properly.

Figure 2 - Sequence of Operation, Dual Duct Terminal Constant Ventilation (4180)

12/1/2008

2.

18


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



3 5 N - C - 4 1 8 0


35NC

3 OF 3

ComfortID™ VARIABLEVOLUME DUAL DUCT WITH CONSTANT VENTILATION

12/1/2008

19


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



12/1/2008

3 5 L / N - C - 4 1 9 0


ComfortID™ VARIABLE VOLUMEDUAL DUCT WITH DEMAND CONTROLLED VENTILATION

35LC,NC

1 OF 4

ComfortID™ VARIABLE AIR VOLUME DUAL DUCTWITH DEMAND CONTROLLED VENTILATIONCONTROL PACKAGE NO. 4190

Leaving

Air

DAMPER

ACTUATOR

DAMPER

ACTUATOR

ZONE

CONTROLLER

ZONE

CONTROLLER

SPACE

TEMPERATURE

SENSOR

SPACE

CARBON DIOXIDE

SENSOR

CONDITIONED

AIR

VENTILATION

AIR

24 VAC

CCN BUS

CCN BUS

Optional space or

ducted heat source

Optional supply air

sensor for ducted

heat source

Figure 1 - Dual Duct Terminal Cooling and Ventilation Air

Application:Dual duct units are designed to provide accurate variable airvolume (VAV) temperature control with a minimum amountof energy consumption. A typical system used with thiscontrol package provides all the ventilation air though a sep-arate OA system. The ventilation air is conditioned (heated/cooled/dehumidified) as required to provide a neutral tem-perature. The ventilation air is connected to the hot deckinlet of the terminal. The control package provides VAV coolingoperation and demand controlled ventilation (DCV). It will adjustthe ventilation to maintain the required ventilation rate whenoccupied and maintain at least the minimum base ventilationrate at all times. Field supplied and installed perimeter orducted heating may additionally be controlled. A typicalapplication is shown in Fig. 1. These terminals require a lowminimum inlet static pressure, permitting the use of smaller,more energy efficient fan systems. A wall mounted spacetemperature (SPT) sensor located in each zone will senseload requirements and activate the control sequence toaccommodate cooling or heating. Load requirements andsound level acceptability govern cold deck inlet sizing whileventilation requirements govern the hot deck inlet sizing.This control package provides the following sequences ofoperation:

A. Cooling (when the primary air source (cold deck) iscooling, refer to numbers on flow diagram Fig. 2):


2. Beginning at 2, the flow is regulated over a throttlingrange by the primary air damper until the minimumcooling airflow setpoint is reached at 3.

3. Between 3 and 4, should the zone temperature continue to fall, the damper will hold the user definedminimum cooling airflow setpoint.

4. It must be noted that the minimum cooling airflowsetpoint should be set to zero by the user. In thiscase, the damper will hold a fully closed positionand only the required amount of ventilation air will be supplied to the space by the second ventilation damper.

B. Local Heating (field supplied heating coil downstream):

When the primary air source is cooling and a field sup-plied heating coil is provided downstream (refer to num-bers on flow diagram Fig. 2). The installer is responsible forproper selection of the ‘reheat’ airflow setpoint (it shouldbe set to meet the heating requirements of the space orthe minimum airflow requirements of the heatingdevice).

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating mode isin effect at 4'.

2. At 5, the primary airflow is increased to theuser defined airflow setpoint. The hot deck damperwill modulate to maintain the ventilation require-ments of the space. The heating device will open/modulate open/or stage up as required to maintainthe space at the heating setpoint. The heatingdevice will be controlled so as not to exceed theuser defined maximum supply air temperature limit.

20


BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 L / N - C - 4 1 9 02 OF 4

3. When the zone temperature rises above the occu-pied heating setpoint, the heating device will close /modulate closed / stage down and the ventilationmode is reactivated at 4. The primary airflow isreduced to the minimum cooling airflow setpoint(normally zero) and the hot deck damper will main-tain the ventilation requirements of the space.

C. Local heating (field-supplied perimeter type heating):

When the primary air source is cooling and a field-supplied perimeter heating device [electric or two positionhot water/steam baseboard heat] is provided, refer tonumbers on flow diagram). The installer is responsiblefor setting the ‘reheat’ airflow setpoint to zero.

1. Should the zone temperature fall below the occu-pied heating setpoint, the occupied heating modeis in effect at 4'.

2. At 5, the primary airflow flow is maintained at mini-mum (or zero). The hot deck damper will modulateas required to maintain the ventilation setpoint.The perimeter heating device will operate asrequired to maintain the space temperature at theheating setpoint.

3. When the zone temperature rises above the heat-ing setpoint, the heating device will be disabledand the ventilation mode is reactivated at 4. Theprimary airflow remains at minimum (or zero) andthe hot deck damper will maintain the ventilationrequirements of the space.

D. Morning Warm-up (if configured to provide variablevolume heating): upon receiving a morning warm-upsignal generated by the air source equipped with CCN(Carrier Comfort Network®) controls, the cold deckdamper will go to the maximum heating airflow setpointif the zone temperature is below the occupied heatingsetpoint at 6. This allows the warm primary air to bedelivered to the zone. As the zone temperature risesabove the occupied heating setpoint, the damper willmove toward the minimum heating airflow setpoint at 4'.

E. Unoccupied Time Period (cooling):

When the unoccupied period is reached, the userdefined occupied cooling setpoint is reset upward to auser defined unoccupied cooling setpoint. Thedampers will throttle in the same manner (as per A)during the unoccupied period, using the unoccupiedcooling setpoint. During unoccupied periods, DCV isdisabled and only the minimum ventilation setpoint ismaintained.

%AIRFLOW

100%

0%MIN COOL LIMIT

MIN HEAT LIMIT

REHEAT LIMIT

MAX HEAT LIMIT

MAX COOL LIMIT

(DAMER OVERRIDE

PRESSURIZATION

MODE

MRAWLOOC DAMPER

OVERRIDE

EVACUATION

MODE

OCCUPIED

HEATING &

MORNING

WARM-UP

SETPOINT

NTFC

SETPOINT

OCCUPIED

COOLING

SPACE TEMPERATURE

12

34

5

4'

6

ON OFF

OPTIONAL

HEAT

SOURCE

LEGEND



Primary Air Source Providing Cooled Air

Figure 2 - Sequence of Operation Primary Controller for Conditioned Air to a Dual Duct Terminal

12/1/2008

21


BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

3 5 E - 2 0 2 - 62 OF 2BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER

F. Unoccupied Time Period (Heating):

When the unoccupied period is reached, the userdefined occupied heating setpoint is reset downward toa user defined unoccupied heating setpoint. Thedampers will operate in the same manner (as per B, C,or D) during the unoccupied period, using the unoccu-pied heating setpoint. During unoccupied periods, DCVis disabled and only the minimum ventilation setpoint ismaintained.

G. Demand Controlled Ventilation:

See Fig. 3. Whenever the zone is occupied, (deter-mined by a separate user configured DCV occupancyschedule) the control will monitor a CO2 sensor (fieldsupplied) and determine if ventilation is adaquate. Thezone’s CO2 level is compared to the ventilation set-point. If the CO2 level is above the setpoint (insufficientventilation), the ventilation airflow is increased between3 and 2 to appropriately maintain the proper ventilationrate. If the zone’s CO2 level is below the setpoint, theventilation airflow is reduced between 2 and 3, but neverreduced below the user configured minimum ventilationsetpoint 3 (required during occupied periods to providethe required base ventilation rate [VB]).

H. Humidity Control (option):

Whenever the zone is occupied and the air source iscooling, (determined by receiving a cooling signal fromthe air source equipped with CCN controls or a primaryair temperature sensor is installed to detect the airsource is operating in the cooling mode), the controlwill monitor a relative humidity (RH) sensor (optional)and determine if the zone’s rh is above the humiditysetpoint. If the RH level is above the RH setpoint, the

primary airflow control point (cold deck) is increased todisplace the humid air in the space with air from theprimary air source (which has a lower dewpoint). Toensure non-simultaneous operation of both heating andcooling, should the increased airflow cause the zone’stemperature to fall below the heating setpoint, thecontrol will suspend the airflow overide. Heat, if sup-plied, will be enabled to maintain the zone’s heatingsetpoint (heat will operate as per B or C above). Theairflow overide will resume when the zone’s tempera-ture recovers and be disabled once the zone’s RH levelfalls below the zone’s RH setpoint.

J. Nighttime Free Cooling:

The logic calculates a nighttime free cooling (NTFC)temperature set point halfway between the occupiedheating and occupied cooling temperature setpoints.Upon receiving a NTFC signal generated by the airsource equipped with CCN controls (or the zonedetermines the air source is operating in theNTFC mode), the cold deck damper will modulate(as per A) to maintain the zone’s NTFC temperature

K. Primary air source shuts off:

1. Both cold deck and hot deck dampers will fullyclose and the control will recalibrate the airflowtransducers.

2. If the primary air source remains off (no cold deckprimary air), both dampers will be repositioned toat least 60% open to allow the air sources to restartproperly.

%AIRFLOW

100%

0%

BASE VENTILATION RATE

MAX OR OCCUPIED

VENTILATION LIMIT

LOW

CO2

HIGH

CO2

CO2

SETPOINT

CO2 Concentration

12

3

LEGEND

--------- VENTILATION Air Source Providing

Conditioned Air

3 5 L / N - C - 4 1 9 03 OF 4

12/1/2008

Figure 3 - Sequence of Operation, Demand Controlled Ventilation

setpoint.

22


CATALOG #

BUYER #

LOCATIONJOB NAME

SHEET


BUYER

DRAWING NUMBER



12/1/2008

3 5 E - 2 0 2 - 6


1 OF 2 3 5 L / N - C - 4 1 9 04 OF 4

35LC,NC

ComfortID™ VARIABLE VOLUMEDUAL DUCT WITH DEMAND CONTROLLED VENTILATION

23

APPENDIX B — CONTROL PACKAGES, ANALOG ELECTRONIC CONTROLS (35LA,NA)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-A-2400


ANALOG CONTROLSEQUENCE 2400

35LA,NA

CO

LDZ

ON

E

HT

GS

TP

T

CLG

ST

PT

WA

RM

ZO

NE

COLD PRIMARY FLOWHOT PRIMARY FLOW0

20

40

60

80

100

%C

AP

AC

ITY

SPACE TEMPERATURE

DUAL DUCT TERMINAL UNIT ANALOGCONTROL SEQUENCE 2400DA – Heating and Cooling Control, Hot Inlet andCold Inlet Airflow Sensing2400 - User defined primary airflow setpoints are main-tained independent of central system pressure. Minimumand maximum airflow setpoints are adjusted at the roomthermostat with a digital voltmeter (DVM). The thermostatoutput for minimum and maximum airflow setpoints rangefrom 0-10vdc (0-2700 fpm).

Under load for cooling, cold deck primary airflow is at themaximum when the occupied space is 2°F above the userdefined cooling temperature setpoint. Primary airflow is pro-portionally reduced to the minimum cooling airflow setpointas room temperature approaches 2°F below setpoint.

Under load for heating, hot deck primary airflow is at maxi-mum when the occupied space is 2°F below the userdefined heating temperature setpoint. Primary airflow is pro-portionally reduced to the minimum heating airflow setpointas room temperature approaches 2°F above setpoint.

1 OF 1

24

APPENDIX B — CONTROL PACKAGES, ANALOG ELECTRONIC CONTROLS (35NA) (cont)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

3 5 N - A - 2 4 4 0



35NA

CO

LDZ

ON

E

HT

GS

TP

T

CLG

ST

PT

WA

RM

ZO

NE

COLD PRIMARY FLOW

TOTAL FLOW0

20

40

60

80

100

%C

AP

AC

ITY

SPACE TEMPERATURE

DUAL DUCT TERMINAL UNIT ANALOGCONTROL SEQUENCE 2440DA – Heating and Cooling Control, Hot Inlet andDischarge Airflow Sensing

2440 - User defined primary airflow setpoints are main-tained independent of central system pressure. Minimumand maximum airflow setpoints are adjusted at the roomthermostat with a digital voltmeter (DVM). The thermostatoutput for minimum and maximum airflow setpoints rangefrom 0-10vdc (0-2700 fpm).

Under load for cooling, cold deck primary airflow is at themaximum when the occupied space is 2°F above the userdefined cooling temperature setpoint. Primary airflow is pro-portionally reduced to the minimum cooling airflow setpointas room temperature approaches 2°F below setpoint.


1 OF 1

25

APPENDIX B — CONTROL PACKAGES, ANALOG ELECTRONIC CONTROLS (35NA) (cont)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-A-2470



35NA

CO

LDZ

ON

E

HT

GS

TP

T

CLG

ST

PT

WA

RM

ZO

NE

COLD PRIMARY FLOW

TOTAL FLOW0

20

40

60

80

100

%C

APA

CIT

Y

SPACE TEMPERATURE

DUAL DUCT TERMINAL UNIT ANALOGCONTROL SEQUENCE 2470DA – Heating and Cooling Control, Cold Inlet andDischarge Airflow Sensing

2470 - User defined primary airflow setpoints are main-tained independent of central system pressure. Minimumand maximum airflow setpoints are adjusted at the roomthermostat with a digital voltmeter (DVM). The thermostatoutput for minimum and maximum airflow setpoints rangefrom 0-10vdc (0-2700 fpm).

Under load for cooling, cold deck primary airflow is at themaximum when the occupied space is 2°F above the userdefined cooling temperature setpoint. Primary airflow isproportionally reduced to the minimum cooling airflow set-point as room temperature approaches 2°F below setpoint.


1 OF 1

26

APPENDIX C — CONTROL PACKAGES, PNEUMATIC CONTROLS (35LP,NP)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1500


MULTI FUNCTION DA/NC/NCPNEUMATIC CONTROL

SEQUENCE 1500

35LP/NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1500DA/NC/NC Multi-Function Control, Inlet Airflow Sensing

1500 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Direct Acting) is at or above13 psig. When thermostat branch pressure decreases,primary airflow reduces proportionally to the user definedminimum airflow setpoint at 8 psig.

Under a load for heating, thermostat branch pressure willcontinue to decrease while maintaining the user definedcold deck, minimum airflow setpoint. The hot deck primary

airflow is at minimum when the thermostat is at 8 psig. Ona continued drop in space temperature the hot deck damperproportionally opens to the maximum heating airflow set-point at 3 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers failclosed (Normally Closed).

1 OF 1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

BLU

E

WH

ITE

27

APPENDIX C — CONTROL PACKAGES, PNEUMATIC CONTROLS (35LP,NP) (cont)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1501


MULTI FUNCTION DA/NC/NOPNEUMATIC CONTROL

SEQUENCE 1501

35LP/NP

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1501DA/NC/NO, Multi-Function Control, Inlet Airflow Sensing

1501 – User defined primary airflow setpoints are main-tained independent of central system pressure.



airflow is at minimum when the thermostat is at 8 psig. On acontinued drop in space temperature the hot deck damperproportionally opens to the maximum heating airflow set-point at 3 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed), and the hot deck damper fails open (Normally Open).

1 OF 1

BLU

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ITE

28


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1502


MULTI FUNCTION DA/NO/NOPNEUMATIC CONTROL

SEQUENCE 1502

35LP/NP

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOWHOT DECK FLOW0

20

40

60

80

100

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1502DA/NO/NO, Multi-Function Control, Inlet Airflow Sensing



Under a load for heating, thermostat branch pressure willcontinue to decrease while maintaining the user defined

cold deck, minimum airflow setpoint. The hot deck primaryairflow is at minimum when the thermostat is at 8 psig. On acontinued drop in space temperature the hot deck damperproportionally opens to the maximum heating airflow set-point at 3 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers fail open(Normally Open).

1 OF 1

BLU

E

WH

ITE

% C

APA

CIT

Y

29


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1503


MULTI FUNCTION DA/NO/NCPNEUMATIC CONTROL

SEQUENCE 1503

35LP/NP

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW0

20

40

60

80

100

%C

AP

AC

ITY

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1503DA/NO/NC, Multi-Function Control, Inlet Airflow Sensing





The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen), and the hot deck damper fails closed (NormallyClosed).

1 OF 1

BLU

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30


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1504


MULTI FUNCTION RA/NC/NCPNEUMATIC CONTROL

SEQUENCE 1504

35LP/NP

12345678910111213141516 COLD DECK FLOWHOT DECK FLOW0

20

40

60

80

100

T-STAT PRESSURE

% C

APA

CIT

Y

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1504RA/NC/NC, Multi-Function Control, Inlet Airflow Sensing1504 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Reverse Acting) is at or below3 psig. When thermostat branch pressure increases,primary airflow reduces proportionally to the user definedminimum airflow setpoint at 8 psig.

Under a load for heating, thermostat branch pressure willcontinue to increase while maintaining the user defined cold

deck, minimum airflow setpoint. The hot deck primaryairflow is at minimum when the thermostat is at 8 psig. Ona continued drop in space temperature the hot deck damperproportionally opens to the maximum heating airflow set-point at 13 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches per minute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers failclosed (Normally Closed).

1 OF 1

BLU

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31


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1505


MULTI FUNCTION RA/NC/NOPNEUMATIC CONTROL

SEQUENCE 1505

35LP/NP


20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1505RA/NC/NO, Multi-Function Control, Inlet Airflow Sensing1505 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Reverse Acting) is at or below3 psig. When thermostat branch pressure increases, pri-mary airflow reduces proportionally to the user defined mini-mum airflow setpoint at 8 psig.

Under a load for heating, thermostat branch pressure willcontinue to increase while maintaining the user defined colddeck, minimum airflow setpoint. The hot deck primary


The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches per minute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed) and the hot deck damper fails open (Normally Open).

1 OF 1

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32


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1506


MULTI FUNCTION RA/NO/NOPNEUMATIC CONTROL

SEQUENCE 1506

35LP/NP


20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1506RA/NO/NO, Multi-Function Control, Inlet Airflow Sensing1506 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Reverse Acting) is at or below3 psig. When thermostat branch pressure increases, primaryairflow reduces proportionally to the user defined minimumairflow setpoint at 8 psig.

Under a load for heating, thermostat branch pressure willcontinue to increase while maintaining the user defined cold

deck, minimum airflow setpoint. The hot deck primaryairflow is at minimum when the thermostat is at 8 psig. Ona continued drop in space temperature the hot deck damperproportionally opens to the maximum heating airflow set-point at 13 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers failopen (Normally Open).

1 OF 1

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CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35L/N-P-1507


MULTI FUNCTION RA/NO/NCPNEUMATIC CONTROL

SEQUENCE 1507

35LP/NP


20

40

60

80

100

%C

AP

AC

ITY

T-STAT PRESSURE

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1507RA/NO/NC, Multi-Function Control, Inlet Airflow Sensing1507 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Reverse Acting) is at or below3 psig. When thermostat branch pressure increases,primary airflow reduces proportionally to the user definedminimum airflow setpoint at 8 psig.

Under a load for heating, thermostat branch pressure willcontinue to increase while maintaining the user defined colddeck, minimum airflow setpoint. The hot deck primary

airflow is at minimum when the thermostat is at 8 psig. Ona continued drop in space temperature the hot deck damperproportionally opens to the heating airflow setpoint at13 psig thermostat pressure.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints.Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen) and the hot deck damper fails closed (NormallyClosed).

1 OF 1

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34

APPENDIX C — CONTROL PACKAGES, PNEUMATIC CONTROLS (35NP) (cont)

CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1508



SEQUENCE 1508

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1508DA/NC/NC Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1508 – User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Direct Acting) is at or above11 psig. When thermostat branch decreases, cold primaryairflow reduces proportionally to the user defined minimumairflow setpoint at 6 psig.

Under load for heating, hot deck primary airflow is at mini-mum when the thermostat is at or above 11 psig. Whenthermostat branch pressure decreases, hot primary airflowincreases proportionally to the user defined maximumairflow setpoint at 6 psig.

The cold deck velocity controller is piped to an airflow sen-sor mounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the cold deck velocity controller. As thethermostat decreases below 11 psig, the hot deck damperbegins to open. The discharge air sensor measures theincreased airflow through the unit and begins to throttle thecold deck damper towards the closed position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers failclosed (Normally Closed).

1 OF 1

Fig. 1 Fig. 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOWTOTAL FLOW

0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

BLU

E

WH

ITE

35


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1509



SEQUENCE 1509

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1509DA/NC/NO, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1509 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Direct Acting) is at or above11 psig. When thermostat branch pressure decreases, pri-mary airflow reduces proportionally to the user defined mini-mum airflow setpoint at 6 psig.

Under load for heating, hot deck primary airflow is at min-mum when the thermostat is at or above 11 psig. Whenthermostat branch pressure decreases, hot primary airflowincreases proportionally to the user defined maximumairflow setpoint at 6 psig.


The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed), and the hot deck damper fails open (Normally Open).

1 OF 1

Fig. 1 Fig. 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW


0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

BLU

E

WH

ITE

36


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1510



SEQUENCE 1510

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1510DA/NO/NO, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1510 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Direct Acting) is at or above11 psig. When thermostat branch pressure decreases, pri-mary airflow reduces proportionally to the user defined mini-mum airflow setpoint at 6 psig.



The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, both the cold and hot deck dampers failopen (Normally Open).

1 OF 1

Fig. 1 Fig. 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW


0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

BLU

E

WH

ITE

37


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1511



SEQUENCE 1511

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1511DA/NO/NC, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1511 - User defined primary airflow setpoints are main-tained independent of central system pressure.




The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches per minute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen), and the hot deck damper fails closed (Normally Closed).

1 OF 1

Fig. 1 Fig. 2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

COLD DECK FLOW


0

20

40

60

80

100

%C

APA

CIT

Y

T-STAT PRESSURE

BLU

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38


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1512



SEQUENCE 1512

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1512RA/NC/NC, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1512 - User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Reverse Acting) is at or below6 psig. When thermostat branch pressure increases, coldprimary airflow reduces proportionally to the user definedminimum airflow setpoint at 11 psig.

Under load for heating, hot deck primary airflow is at mini-mum when the thermostat is at or below 6 psig. Whenthermostat branch pressure increases, hot primary airflowincreases proportionally to the user defined maximumairflow setpoint at 11 psig.

The cold deck velocity controller is piped to an airflow sen-sor mounted in the discharge nozzle of the dual duct unit.Therefore, total airflow throught the unit is measured andcontrolled through the cold deck velocity controller. As thethermostat increases above 6 psig, the hot deck damperbegins to open. The discharge air sensor measures theincreased airflow through the unit and begins to throttle thecold deck damper towards the closed position to maintainthe constant volume (Fig. 1) or total air volume setpoint.


1 OF 1

Fig. 1 Fig. 2

12345678910111213141516 COLD DECK FLOW


0

20

40

60

80

100

%C

AP

AC

ITY

T-STAT PRESSURE

12345678910111213141516 COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

AP

AC

ITY

T STAT PRESSURE

WH

ITE

BLU

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CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1513



SEQUENCE 1513

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1513RA/NC/NO, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1513 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The cold deck velocity controller is piped to an airflow sen-sor mounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the cold deck velocity controller. As thethermostat increases above 6 psig, the hot deck damperbegins to open. The discharge air sensor measures theincreased airflow through the unit and begins to throttle thecold deck damper towards the closed position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multifunction controllers is 57.6 scim (standard cubic inches per minute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed), and the hot deck damper fails open (Normally Open).

1 OF 1

Fig. 1 Fig. 2

12345678910111213141516 COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

AP

AC

ITY

T-STAT PRESSURE

12345678910111213141516 COLD DECK FLOW

HOT DECK FLOW

TOTAL FLOW

0

20

40

60

80

100

%C

AP

AC

ITY

T-STAT PRESSURE

BLU

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40


CATALOG #

BUYER #

LOCATIONJOB NAME

TEEHSNOISIVER

JOB NUMBER

BUYER

DRAWING NUMBER



12/1/2008

35N-P-1514



SEQUENCE 1514

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1514RA/NO/NO, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1514 - User defined primary airflow setpoints are main-tained independent of central system pressure.





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12/1/2008

35N-P-1515



SEQUENCE 1515

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1515RA/NO/NC, Multi-Function Control, Hot Inlet andDischarge Airflow Sensing1515 - User defined primary airflow setpoints are main-tained independent of central system pressure.


Under load for heating, hot deck primary airflow is at mini-mum when the thermostat is at or below 6 psig. Whenthermostat branch pressure increases, hot primary airflowincreases proportionally to the user defined maximum air-flow setpoint at 11 psig.


The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches per minute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen), and the hot deck damper fails closed (Normally Closed).

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12/1/2008

35N-P-1516



SEQUENCE 1516

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1516DA/NC/NC Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1516 – User defined primary airflow setpoints are main-tained independent of central system pressure.

Under load for cooling, cold deck primary airflow is at maxi-mum when the thermostat (Direct Acting) is at or above11 psig. When thermostat branch pressure decreases, coldprimary airflow reduces proportionally to the user definedminimum airflow setpoint at 6 psig.


The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat decreases below 11 psig, the cold deck damperbegins to open. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.


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12/1/2008

35N-P-1517



SEQUENCE 1517

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1517DA/NC/NO, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1517 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat decreases below 11 psig, the cold deck damperbegins to open. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed) and the hot deck damper fails open (Normally Open).

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12/1/2008

35N-P-1518



SEQUENCE 1518

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1518DA/NO/NO, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1518 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat decreases below 11 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.


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12/1/2008

35N-P-1519



SEQUENCE 1519

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1519DA/NO/NC, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1519 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat decreases below 11 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen) and the hot deck damper fails closed (NormallyClosed).

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Fig. 1 Fig. 2

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12/1/2008

35N-P-1520



SEQUENCE 1520

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1520RA/NC/NC, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1520 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow throught the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat increases above 6 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.


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12/1/2008

35N-P-1521



SEQUENCE 1521

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1521RA/NC/NO, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1521 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow throught the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat increases above 6 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (standard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails closed (NormallyClosed) and the hot deck damper fails open (Normally Open).

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12/1/2008

35N-P-1522



SEQUENCE 1522

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1522RA/NO/NO, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1522 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat increases above 6 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.


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12/1/2008

35N-P-1523



SEQUENCE 1523

35NP

DUAL DUCT TERMINAL UNIT PNEUMATICCONTROL SEQUENCE 1523RA/NO/NC, Multi-Function Control, Cold Inlet andDischarge Airflow Sensing1523 - User defined primary airflow setpoints are main-tained independent of central system pressure.



The hot deck velocity controller is piped to an airflow sensormounted in the discharge nozzle of the dual duct unit.Therefore, total airflow through the unit is measured andcontrolled through the hot deck velocity controller. As thethermostat increases above 6 psig, the cold deck damperbegins to close. The discharge air sensor measures thedecreased airflow through the unit and begins to operatethe hot deck damper towards the open position to maintainthe constant volume (Fig. 1) or total air volume setpoint.

The hot and cold deck volume setpoints can be adjustedindependently to provide different control volume setpoints(Fig. 2). Also, the reset start point of either controller can bechanged to allow airflow crossover (mixing) of the hot andcold decks. Total pneumatic air consumption of the multi-function controllers is 57.6 scim (stanard cubic inches perminute) at 20 psig (.944 l/m at 138 kPa). Upon a loss ofpneumatic air, the cold deck damper fails open (NormallyOpen) and the hot deck damper fails closed (Normally Closed).

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Catalog No. 04-51350003-01 Printed in U.S.A. Form 35L,N-1XA Pg 50 1-09 Replaces: New

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