AHU Master Specifications2 · 2019-08-14 · Page 2 Master Specification Product: AIR HANDLING UNIT...

BENDIG™

Air Handling Units Master Specification Service/ Installation/ Start-Up Manual

Metadec co.,ltd

Please consult your local BENDIG representative or the factory for warranty issues. IMPORTANT: Time sensitive completion of Appendix A and B is required to initiate equipment warranty. Refer to O&M manual for specific warranty activation instructions. BENDIG AHUs which is located on the unit tag on the fan access door, will be required for all warranty evaluations. Contact us: Phone: 662 – 7573080-2 www.metadec‐ahu.com

Master Specification

Product: AIR HANDLING UNIT Range: PTP model

Table of Contents

PagePart ‐1 General 1

1.01 Corporation 11.02 Description 11.03 Certificate and Test Result 11.04 Mechanical Performance of unit 21.05 Cleaning, Delivery 3

Storing 5 Handling 6 Nameplate information 6

1.06 Warranty Policy 7

Part‐2 Product 2.01 Product Description 82.02 Application and Working condition 82.03 Design Description 82.04 Unit Construction 92.05 Unit proposal and Determination 9

Part‐3 Assembly

3.01 Placing and Foundation 103.02 Provision of service access 113.03 Connection of Sections 123.04 Installation of Water proof version 133.05 Base Frame connection 143.06 Discharge and Inlet connection 143.07 Connection of Exchanger 143.08 Condensate outlet ocnnection 163.09 Electrical Assembly 16

Part‐4 Start‐Up

4.01 Start‐up electric power unit 194.02 Checkout before start‐up 19

Part‐5 Unit Operation 21

5.01 Unit Operation 5.02 Winter Operation 5.03 Summer Operation

Part‐6 Maintenance 22

6.01 Fan 226.02 Openwheel Fan 266.03 Coils 266.04 Drainpan 286.05 Air washer 296.06 Rotary Heat Recovery 306.07 Plate Heat Exchanger 306.08 Run around coil 316.09 Silencer 32

Part‐7 Disassembly and Disposal 34

Part‐8 Useful‐Equation 35

Part‐9 Troubleshooting Guide 36

APPENDIX‐A APPENDIX‐B



Custom AHU Master Specifications

Part 1‐ General

1.01 Corporation

Metadec (MTD) is a leading supplier of BENDIG air handling units. MTD was established in 2004 in Thailand. We constantly develop and implement innovative technologies to provide our customers with excellent solutions perfectly suited to their expectations. We are able to provide perfect atmosphere in any construction project around the world – regardless of its purpose, size and climate conditions. Until now our company has already supplied more than 750 units (2009) in many industries of Thailand.

1.02 Description

A. This section of the work includes the design, fabrication, testing, cleaning and packing, shipment, final assembly and installation of custom built‐up air handling unit by the unit manufacturer in complete accordance with the following specification.

B. The details outlined and component manufacturers named in this specification may not be deviated from in the air handling unit manufacturer’s preparation of the bid, even where techniques are required which are not considered standard by the manufacturer. The construction as described in this specification is considered essential, and any deviation from this specification must be specifically identified and bid as a voluntary alternate (add or deduct), but only after complying with the specification defined as the base bid.

1.03 Certificates & Test Result

The quality and technical parameters of Metadec products have been proven by the international Eurovent and TUV certificates. We comply with all the requirements of European Product Safety Standards (CE) as well as the integrated ISO 9001:2008 Quality Management System.

A. Management Quality System

This Certification Verified that every BENDIG air handling unit are manufactured as the same as standard follow as the quality management directive. ISO Certifier: SGS United Kingdom Ltd Systems & Services Certification Company Activities: The manufacture of air handling unit for commercial and industrial use Certificate No: TH08/1951

B. Product Certification

The Certification which provide the most modern testing process which challenge by the AHUs manufacturer follow as the Design process, Performance of Unit, and so on.

Mechanical Performance Testing: TUV‐SUD/ Munchen Germany Rating and Performance of Unit Testing: TUV‐NORD/ Essen Germany

(see performance in Table‐1.03) Certified Testing and Unit Design Software: Eurovent Certification Program

Page 1



Table 1.04 Test Result of EN1886 (Mechanical performance of Air handling Unit

More concern on the Test‐Result please feel free to contact Mr. Peya Chittipalangsri

Casing Leakage L1 (0.09 l/s.m^2) Remark: Tested at ‐400 Pa. negative pressure Leakage Leakage Rate Class L1 < 0.15 l/s.m^2 L2 < 0.44 /s.m^3 L3 < 1.32 l/s.m^4 Casing Leakage L1 (0.13 l/s.m^2) Remark: Tested at +700 Pa. positive pressure Leakage Leakage Rate Class L1 < 0.22 l/s.m^2 L2 < 0. 63/s.m^3 L3 < 1.9 l/s.m^4 Filter Bypass leakage F9 (<0.1%) Remark:

Tested at ‐400 Pa.

negative pressure Bypass Leakage Class F5 F6 F7 F8 F9 % of BP leakage 6 4 2 1 0.5 Filter Bypass leakage F9 (<0.1%) Remark:

Tested at ‐400 Pa.

negative pressure Bypass Leakage Class F5 F6 F7 F8 F9 % of BP leakage 6 4 2 1 0.5 Casing Strength D2 (5.3 mm/1000 mm.) Casing Minimum Deflection Tested at 1000 Pa. Class mm x m^‐1 D1 < 4 D2 < 10 D3 > 10

Page 2



C. After Purchase: Make submittals in accordance with requirements of conditions of purchase. Submittals shall show Buyer’s purchase order number, equipment number and project name. Information shall include, as applicable, but not be limited to the following::

1. Technical information submit with quotation, revised and expanded as required; including airborne and transmitted sound power levels by octave band for unit.

2. Fan manufacturer and performance curves with the operating points clearly indicated. Motor sizes and types.

3. Coil selections with sizes rows, fin spacing face velocity, air &fluid temperatures, flow rates, air & fluid pressure drops, and connection sizes.

4. Proposed filters indicating sizes, efficicency, and pressure drop.

5. (If applicable) Factory testing procedures for review and acceptance.

D. After Receipt of Approved drawing: Submit manuals with detailed description of installation, operation, and maintenance, including the following:

1. All approved “Certified for Construction” drawing

2. Written recommendation for field storage, both indoors and outdoors,

3. Installation requirements including assembly instructions, lifting requirements and adjustments.

4. Manufacture’s literature describing each piece of equipment including operation instructions with step by step preparation of starting, shutdown, and draining and maintenance instructions including lubrication.

1.05 Product Cleaning, Delivery Storage and Handling:

A. Cleaning, Thoroughly clean equipment, components and subassemblies of water, dirt, debris, weld splatter, grease, oil and other foreign matter prior to shipment.

B. Delivery, The unit shall be ordered on the basis of an agreed upon offering/technical requirements form or specific individual sections. In case of more complicated assemblies the specification is to be complemented by a layout draft of the assembly and eventually by designation of the expedition assemblies.

1. Unit to be prepared and completely sealed for protection during shipment.

‐ Protect machine surfaces with suitable, easily removable rust preventive

‐ Provide desiccant bags or vapor phase inhibitors where required to keep components dry.

Page 3

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Page 4



C. Storing, Packing, when storing a BENDIG air handling unit for more than one month from the date of shipment, follow these simple guidelines. Make sure equipment is received, unloaded, and set in its storage position properly. The fan wheel and motor must be rotated at least once per month to ensure proper bearing lubrication and prevent premature bearing failure. Belt driven equipment should be de‐tensioned to extend belt and bearing life. For instructions on pulley adjustment and pulley alignment, refer to “Fan/Motor Maintenance,” Section 6.01. Indoor and split units are not intended for outdoor storage unless adequately protected from the weather elements, condensation, and construction debris. Make sure any access doors or panels are tightly closed and sealed so that snow, ice, water, dust, dirt, mud, and other construction debris or small birds and animals do not enter the unit. Snow and/or ice must not be allowed to accumulate on units that have not been assembled. Furthermore, protect the unit from possible damage to the exterior of the cabinet by construction vehicles and personnel. Detailed records must be kept to validate proper storage. An example of such record is shown in Filtering‐1. To keep the warranty intact, Appendix A –BENDIG AHU Storage Verification Data Sheet must be sent to BENDIG on a monthly basis. This form may be reproduced as required for submittal to BENDIG.

Refer to, and follow, published literature for major components not manufactured by BENDIG (fans, motors, Variable Frequency Drives, Heat Wheels, etc.). Contact the BENDIG sales office for specific instructions.

Filtering‐1

To minimize condensation during storage, wrappings around the air handling unit can be fitted with filtered ventilators (simply a vent with a filter to keep out dirt and contamination). This allows the container to breathe and to exchange air and water vapor. One filtered ventilator located low on one end of the bagged section and another located near the top on the opposite end provides the best ventilation. Vents for such purpose are available by contacting BENDIG.

Addition Cautions Units are standard wrapped in PE foil. They must be stored at indoor places where:

• Maximum Relative air humidity doesn’t exceed 85% • The humidity doesn’t condensate. • Surrounding temperature ranges from ‐20C up to +40C • No dust, gasses and corrosive fumes or other chemical matters causing corrosion of

constructional parts and device equipment may get into the device. • Device cannot be exposed to direct solar radiation. • Sections of units must only be stored in position that they will also be working in (according to

the drawing or picture which depicted as business transaction). • Stacking of transportation sections of units only allows for:

o Section placed on top must not have base frame o Section placed on top must not in anyway overreach the section it is placed on. o Between the sections must be inserted protecting element to prevent damage. o When stacking, the fan must always be put in the bottom o Plate, rotary heat exchanger and any kinds of recovery units cannot be allowed to be

stacked. o Only allow two section stacks each other.

Page 5

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Page 6



1.06 Warranty Policy:

A. All equipment, materials, and workmanship shall be warranted for (12) months from startup or (18) months from shipment, whichever period expires first. During the warranty period, the manufacturer shall repair or replace, at no additional cost to the owner, any equipment, material, or workmanship in which defects may develop.

B. Warranty is for parts only; labor to remove or reinstall parts is the responsibility of others

C. This warranty does not cover corrosion or normal deterioration; damage due to freezing, ice or snow; damage resulting from fire, flood, accident, high or low voltage or power surges; normal maintenance items such as filters, drive belts or fuses, or damage resulting from negligence.

D. This warranty is made in lieu of all other warranties expressed or implied, with the exception of

extended warranty coverage specifically included on individual projects, and so noted in the purchase order for that project. In consideration of the warranty herein contained, the buyer expressly waives any right to claim other warranties, expressed or implied.

E. MTD reserves the exclusive right to authorize and initiate any warranty claim. MTD Products neither

assumes nor authorizes any person to assume for it any obligation or warranty other than that stated herein.

Page 7



Part 2‐ Product

2.01 The Product’s Definitions

A device used to condition and circulate air as part of a heating, cooling, filtration, humidification, de‐humidification, ventilating, and air conditioning system. Usually, an air handler is a large metal box containing a blower, heating and/or cooling elements filter racks or chambers, sound attenuators, and dampers. Air handling unit usually connect to ductwork that distributes the conditioned air through the building, and returns it to the AHU. Sometimes AHUs discharge (supply) and admit (return) air directly to and from the space served, without ductwork.

2.02 Application and working conditions

1) Standard unit are designed for air transport and treatment in ventilation, heating and air conditioning

equipment operating in non‐hazardous areas. They can work at ambient temperature of ‐30 C0 to +40C0

2) The units are also produce in modifications for outside environment, for hazardous areas – Zone 1 and Zone 2 and in Hygienic and seismic‐resistant design.

3) Horizontal units must be placed on the rigid horizontal floor. They are placed freely, without anchorage. The hangers of the units that are designed for suspension must be anchored to the rigid construction. Lateral clearances from other objects must be secured. They depend on the type and size of the units.

4) The detailed assembly and operation conditions of the units are presented in the CHAPTER 3,4 and 5

2.03 Design Description

1) The built‐up unit consists of individual sections which are equipped with built‐in elements or sets for air treatment or transport, respectively. A ventilation system designer determines their size, number, type, sequence and location in the assembly. In special cases he must consult with the manufacturer.

2) The section of the built‐up units can be assembly in one or in two horizontal layers. The assembly in more layers is possible after consultation with producer’s designer.

3) Suction and Discharge port of the units are fitted with the flexible adapters that are terminated by sub‐frame of the unit or the panel (below PTP1212) for connection the piping.

4) Outlet of heat‐exchangers, doors, inspection glass and fitting are normally placed on the operation side of the unit. This side can be to the right or left from the air flow direction. A combined placement must be specified separately.

5) The way of connection and sealing of the individual sections is described in the assembly and operation instructions.

6) An access to the fan and filter is secured through the door which the door which is fitted with the closures with handles or with the closures that are opened by means of a key. It depends on the placement character or the customer’s request.

Page 8



2.04 Unit Construction

1) Unit Frame works The section is assembly from full‐closed profile Galvanized steel which enclosed all unit‐frame works by the thermal‐break panel. The angles are connected by welding or aluminium‐dicast Conner. The connection is made by pressing on and is secured by self‐drilling screw. The Thermal‐Break panel are fixed by self‐drilling screw from outside, the door‐frame are pressed by self‐drilling screw from outside of the unit. The orifices for regular handling are fitted with access or service panel. The intermediate bar which made from rectangular galvanized steel profile, can divide any panel into two areas, thus enabling to frame the orifices and fix‐the built in internal parts.

2) Panel or Casing The panel is assembled from two steel galvanized sheet troughs that are jointed together by mechanical lock. Inside the panel there is the insulating filler from PU foam, PS foam, Rockwool which density are 40kg/m3, 2.lbs., 80 kg/m3 respectively. The Rockwool flammability is class‐B. Panel thickness are begin with 52 mm. until 90 mm according to the type and design of the unit. The protective ZINC layer on the panel sheet is 275 g/m3 at minimum. In case of special demand it is possible to supply units with panels made from the sheets painted on the external side or from the stainless steel from the internal side. Doors are created from adapted panels and are fitted with hinges and locks.

3) Fan/Motor support The fan‐motor set with V‐Belt drive is mounted on the C‐channel steel profile. The set is spring‐mounted on the section structure by means of rubber blocks. The fan discharge and section wall are interconnection with flexible insert.

4) Electrical Connection The electrical connection and automatic regulation are not included in the supply of the units. Detailed information is given in section 3.10

2.05 Unit proposal and determination

1) The selection of the unit type according to air capacity is carried out by means of the selection chart table.

2) The unit composition is carried out by the selection of the individual sections and attachment according to the project type, building layout, use purpose and required unit function.

3) The unit noise emitted by the jacket into the surroundings is given by the fan noise and panel attenuation.

Parameters of the panels are: Wall thickness 52 mm. 90 mm. Insulation Coefficient, 0.1 0.087 Air Sound insulation index, value R (dB) 41 43 Approximate values of the noise emitted by the jacket into the surroundings and into the suction and

discharge ports of the unit can be found in the table for corresponding unit size. 4) It is possible to consult questions with manufacturer and make technical proposal more precise

including the accurate unit calculation and dimensional draft of the assembly. This service is free of charge. The offering/Technical Requirements form is a result of the consultation.

Page 9

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Page 14

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Page 15

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Page 16



B. Schematic of electric wiring /motors of Fans Controlled by single phase inverter

C. Schematic of electric wiring /Rotary Heat Exchanger

IA controller, Without controller

Page 17



D. Schematic of electric wiring /Electric Heater

Page 18



Part 4‐Start Up

4.01 Startup Electric Powered Units

After the unit has been assembled, installed, and all utilities connected, the unit is ready for operation.

Caution:

Before Entering Unit. Check that the disconnect switch is in the “OFF” position. “LOCKOUT” The switch for added security.

4.02 Check Out before startup

a. General Functions check

‐ Confirm the building supply voltage matches the voltage for which the unit wired.

‐ Check all piping and wiring penetrations made by contractors for water tightness. All penetration made watertight to prevent water damage to the unit and building.

‐ Remove shipping bolts and shipping lock from fan base so that fan/motor assembly is free to float on isolators. When inertia bases are provided and installed in the field.

Note:

To maintain unit design specification, the holes remaining in the unit floor after removal of the shipping bolts

should be sealed.

‐ Check the fan bearing set screws for tightness. ‐ Inspect all fasteners to ensure that none have loosened during shipment. ‐ Check alignment of sheaves and tension of V‐Belts. Refer to Maintenance sections “Fan/Motor

Assembly.” ‐ Rotate the Fan manually to verify that it is free to operate. Remove any dirt or debris that may have

accumulated during installation. ‐ Install filter in filter rack. ‐ Ensure all electrical connectors are tight. ‐ Check that all dampers are free to move.

b. Fan Startup

‐ Supply power to the unit. Momentarily energize each fan, and check fan rotation. The fan rotation arrow is clearly marked on the side of the fan housing.

‐ Rotation can be reversed by interchanging any two of the three phase power leads. If the rotation is wrong for all fans, interchange the leads of the incoming power. If the rotation is wrong on only one fan, reverse the leads at the electrical supply for that fan only.

‐ Check lubrication 24 hours after the initial fan startup. Refer to “Fan bearing Lubrication.” To reduce the potential for premature bearing failure.

Page 19



‐ It is recommended that variable pitch sheaves be replaced with fixed pitch sheaves once the system is balanced and the desired fan speed is determined. This will reduce the potential for belt failure and excessive vibration.

‐ Check and adjust belt tension after 8,24 and 100 hours of operation and periodically thereafter to reduce the potential for premature drive component failure.

C. Refrigeration System Startup

Completion of Appendix B – Metadec‐AHU installation /Startup verification list is required and must be sent to MTD. within 14 days of startup in order to keep the warranty intact.

All refrigeration systems will have applicable startup and checkout information attached to the unit. These forms must be completed and disposition according to the instructions on the form. In order to qualify for the equipment warranty, these forms must be completed and returned at the time of startup.

Page 20



Part 5‐Unit Operation

5.01 Unit Operation

Refer to” Appendix B – MTD AHU installation/ Startup Verification List” for item to be verified.

5.02 Winter Operation

Hot water coils: With Fan OFF,open all valves in the water system. Open air bleed valve on top of coil. Turn pump ON and ensure all air is removed from the coil through the top bleed valve. When water (without air) emerges from the air bleed, shut the bleed valve OFF. Verify that water entering the coil is at the design temperature. Turn the fan ON. Depending on sequence of operation, unit should now be under automatic control.

WARNING

UNDER NO CIRCUMSTANCES SHOULD HOT WATER FLOW BE SHUT OFF WHILE UNIT IS OPERATIING AND THE OUTSIDE AIR TEMPERATURE IS BELOW FREEZING. FOR ADDED SECURITY, THE COIL AND/OR SYSTEM SHOULD BE PROTECTED BY A FAN‐CUT OFF OR FREEZESTAT IN THE CONTROL SYSTEM.

5.03 Summer Operation

Chilled Water Coil: Open all valves to coil. Open air bleed valve on top of coil header. Turn pump ON. When water (without air) emerges from air bleed valve, shut the bleed valve OFF. Verify that water entering the coil is at the design temperature. Turn fan ON.

Check and clean drain pan under cooling coils. Clean out drain line. Drain lines must be trapped (refer to 3.09 Drain connection). Prime drain lines by filling with water. This will prevent air from entering the system through drain lines.

DX coils: Turn Fan ON first. This is reverse sequence from all other start‐ups. Turn compressor ON. System should now be under automatic control.

WARNING

COMPRESSOR MUST BE INTERLOCKED WITH AIR FLOW PROVING SWITCH TO PREVENT COMPRESSOR FROM STARTING BEFORE FAN. SEVERE COMPRESSOR DAMAGE CAN OCCUR UNLESS FAN RUNNING BEFORE COMPRESSOR.

Page 21

Product:

Part 6‐Main

6.0

6.0

AIR HANDL

ntenance

01 Fan One impossibbasis. Bthe mamanufmaintefollowemaintemay bsophistthe invparticumaintein voidinspectbuildu

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Range: PTP

tor in makingmaintenance

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model

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Figure 6.01‐1

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Page 22

Product:

6.0

Seshpuorac

6.0

AIR HANDL

01‐2 Pulley

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LING UNIT R

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Range: PTP

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model

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Page 23

Product:

6.0

AIR HANDL

01‐4 There bearinTable BENDIGhumidfrequeequipmmix lubTo avoappliedimmed

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Page 24

Product:

6.0

AIR HANDL

LOC

01‐5 Motor

Be surnamepand/orrecom

Lubricaquality indicateProcedthe tip frame oto 4 strslotted string i

LING UNIT R

LUBRICATE BEOR STORAGE CORROSION. I

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Range: PTP

EARINGS PRIOAND ROTATEIF THE FAN ISS SHOULD BE

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STARTUP.

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Page 25

Product:

6.02 Op

6.03 Co

CotuinsexWreanadreAd 6.0MStaIf envacoTh

AIR HANDL

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03‐1 DX Coils odification: 1andard coolanthe cooler is nables monitoalve control arondensed wathe evaporator

LING UNIT R

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Range: PTP

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model

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ality ball beari

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N m and siliconfor proper gre

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ng grease as r

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e grease in mease type.

suggested as

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e condensate o

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irt, corrosion,n the coil tubely of cleanin

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Specificatio

manufacturer.

, air trapped be circuitry, ong interior an

connection twater pressurire maintainine system, thover chargin

section, whiclectromagnetpe for trappinh a siphon.

on

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Page 26

Product:

Fig 6.0Thspeqit 6.0

Ve

AIR HANDL

gure 6.03‐1 –

03‐2 Chilledhe heat exchapecified in advquipped with tis necessary t

03‐3 Possib

rtical supply

LING UNIT R

– Dx Diagram

d water coils ngers are testvance. The conthe stainless so connect the

le connection

Range: PTP

ted with the pnnecting bransteel pan withe condensate

n of the water

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model

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r heat exchan

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ng

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Elements of 1. solenoid v2. sight glass 3. thermosta

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or a higher preket. The coolewater. At the

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Specificatio

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ircuit:

valve

on

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Page 27

Product:

6.04 Dr

McocoboprmawiSoUnthsothheco

In faheprcadrfoind

AIR HANDL

rain Pan (In vi

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LING UNIT R

iew of Possiti

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Range: PTP

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model

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are the samesate pan on thetely when thions for a pro

Figure 6.04

air through thethe drain relanit static prey dirty filters,the trap isn’t tem. If too deer level in the ive pressure s

Figure 6.04

e supply air isre. If the preentually splashlding below. gested trap dethen turn it Od in the trap op trap” is a ghts can resunegative pres. In a positivhe leaving air he static presperly construc

‐1

e cooling coil.ative to pressuessure, but in , dirty coil, ordeep enough,eep, water wiltrap rises unystem.

‐2

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Master S

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Specificatio

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Page 28

Product:

6.05 Ai

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AIR HANDL

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aintenance

he good functind maintainedhe intervals on

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section serveThe section

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Range: PTP

s for air humin is normallysteel, the pumin order to b

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model

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urizing unit is

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possible only

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in fresh air r cing the quali

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in condition t

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suitable especr fittings arees and distribuautomatic wand solenoid he section alsverflow outleoverflow outlor measuring p

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Specificatio

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on

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Page 29

Product:

6.06 Ro M

hu10seshe.gSpHo

6.07 Pla M

SefitfuSp

OuW

AIR HANDL

• Check the flo

• Check • Check • Regula• Draina

operat• Cleanin

(steam

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ate Heat Exchodification: –ectional speedted with a stanction it is nepecial modific

– with – with swimm

utdoor modifWe recommend

LING UNIT R

Table 6.05

of the manomw and their pof the status of the pump (ar cleaning of ge of the systtion destroys bng of the pan m jet) or acid s

ecover Section– with the rotory heat exchanmA). Supplieng free accesnected to all cection with mcation: tion (vertical a

hanger – with by‐passds higher thanainless steel pecessary to usecation: mixing dampdouble heat r

ming pool hallsication: d to use a pro

Range: PTP

‐ Checmical p

meters and throfiles as it is of the nozzles(noise and stathe water filtetem (emptyingbacteria and mand the interprayed by the

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model

parameter of w

ermometer, vrecommendes and the presatus of the beer. g), and then tmicroorganismrnal surfaces oe nozzle syste

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y‐pass A drop swe recommendr trapping andhe condensat

mixing of suppefficiency incr

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water in spray

visual control ed to be washssure in front arings).

he unit continms. of the unit witm

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lied and dischrease, especia

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about 2 hour

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reezing (electr

Specificatio

he equalizer o

rs. This “dry”

der pressure

d ntrol (input 0 directions Thnd/or cleaninpection sectionfan section.

ranch. For section is the correct

ilation of

rical heating).

on

of

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Page 30

Product:

6.08 Ru

Thliqcoflotwhesusare PoThthonHeThwi

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un around coi

he Run aroundquid in heat eorresponding ows (e.g. whewo heat exchaeat exchangerpply air flow. fety functionquirements.

ower output rhe heating powis valve. The hn and switchineat carrying mhe circuit can bith other non‐

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model

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ay valve instay 3‐way valve i

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Page 31



6.09 Silencer

Modification: – Pre galvanized steel sheet cover with mastic filled grooved for reduce contamination of air.

Without perforate faced:‐ Evaluation the silencer damage and contamination for repair and cleaning.

Maintenance period:‐ Without perforate plate covered on splitter; observe every months.

With perforate protection; every 6 months for cleaning.

Page 32



Sound insertion loss data:

Weight Splitter Gap Air Friction loss

63 125 250 512 1K 2K 4K 8K (kg.) Qty. size Vel Fl900 6 11 19 33 42 41 33 21 75 2 67 7.7 91200 7 14 26 41 45 45 37 26 97 2 67 7.7 101500 8 16 33 46 48 48 42 30 127 2 67 7.7 11900 5 9 17 30 40 40 30 19 108 3 75 7.8 91200 6 12 23 28 43 44 34 24 137 3 75 7.8 101500 7 14 31 43 47 48 41 27 175 3 75 7.8 11900 5 9 17 30 40 40 30 19 128 3 75 7.8 91200 6 12 23 38 43 44 34 24 164 3 75 7.8 101500 7 14 31 43 47 48 41 27 215 3 75 7.8 11900 5 9 17 30 40 39 29 18 214 4 80 7.8 101200 6 12 22 38 43 43 33 23 237 4 80 7.8 111500 7 14 30 43 47 48 41 26 391 4 80 7.8 121800 9 19 34 51 47 45 40 35 445 4 80 7.8 13900 5 9 17 30 40 39 29 18 240 4 80 7.8 101200 6 12 22 38 43 43 33 23 337 4 80 7.8 111500 7 14 30 43 47 48 41 26 452 4 80 7.8 121800 9 19 34 51 47 45 40 35 515 4 80 7.8 13900 5 9 17 30 40 39 29 18 279 4 80 7.8 101200 6 12 22 38 43 43 33 23 396 4 80 7.8 111500 7 14 30 43 47 48 41 26 537 4 80 7.8 121800 9 19 34 51 47 45 40 35 615 4 80 7.8 131200 6 11 22 38 43 42 32 22 480 5 83 7.8 111500 7 13 30 43 47 47 40 25 644 5 83 7.8 121800 9 19 33 51 47 44 40 34 737 5 83 7.8 13900 5 9 16 29 39 39 28 18 373 5 83 7.8 101200 6 11 22 38 43 42 32 22 525 5 83 7.8 111500 7 13 30 43 47 47 40 25 712 5 83 7.8 121800 9 19 33 51 47 44 40 34 815 5 83 7.8 13900 5 9 16 29 39 38 28 17 450 6 86 7.7 101200 6 11 22 38 43 42 32 21 649 6 86 7.7 111500 7 13 29 43 47 47 40 24 882 6 86 7.7 121800 9 18 32 50 47 44 40 33 988 6 86 7.7 13900 5 9 16 29 39 38 28 17 486 6 86 7.7 101200 6 11 22 38 43 42 32 21 707 6 86 7.7 111500 7 13 29 43 47 47 40 24 969 6 86 7.7 121800 9 18 32 50 47 44 40 33 1087 6 86 7.7 13900 5 9 16 29 39 38 28 17 540 6 86 7.7 101200 6 11 22 38 43 42 32 21 790 6 86 7.7 111500 7 13 29 43 47 47 40 24 1090 6 86 7.7 121800 9 18 32 50 47 44 40 33 1229 6 86 7.7 131500 7 13 29 42 46 47 40 24 1516 7 88 7.7 121800 8 18 32 50 46 44 39 33 1704 7 88 7.7 132100 10 20 36 51 51 46 40 35 2040 7 88 7.7 141500 7 15 32 45 48 48 41 29 1997 9 70 8.9 161800 9 21 37 53 49 46 41 38 2119 9 70 8.9 172100 12 23 40 53 52 46 42 38 2648 9 70 8.9 191500 7 13 29 42 46 47 40 24 1872 7 88 7.7 121800 8 18 32 50 46 44 39 33 2205 7 88 7.7 132100 10 20 36 51 51 46 40 35 2624 7 88 7.7 141500 7 15 32 45 48 48 41 29 2427 9 70 7.9 161800 9 21 37 53 49 46 41 38 2833 9 70 8.9 172100 12 23 40 53 52 46 42 38 3365 9 70 8.9 191500 7 15 32 45 48 48 41 29 2596 9 70 8.5 151800 9 21 37 53 49 46 41 38 3049 9 70 8.5 162100 12 23 40 53 52 46 42 38 3625 9 70 8.5 171500 7 14 31 44 47 47 41 28 2877 10 73 8.3 141800 9 21 36 52 49 45 40 37 3371 10 73 8.3 152100 11 22 39 53 52 46 42 38 3993 10 73 8.3 171800 9 20 35 52 48 45 40 37 4484 11 75 8.3 152100 13 26 43 54 53 48 47 41 5775 11 75 8.3 182400 13 26 43 54 53 48 47 41 5775 11 75 8.3 181800 7 14 31 43 47 48 41 27 3889 11 75 10.3 222100 11 22 39 53 52 46 42 38 5206 11 75 10.3 262400 13 26 43 54 53 48 47 41 5775 11 75 10.3 28

1512PTP

Model Noise Reduction

PTP 0606

Length

PTP 0906

PTP 0909

PTP 1206

PTP 1209

PTP 1212

PTP 1515

PTP 1812

PTP 1815

PTP 1818

PTP 2118

PTP 2518

PTP 2121

PTP 2521

PTP 2525

PTP 2825

PTP 3125

PTP 3131

Page 33

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Part 7-Disassembly, Disposal

Only qualified person and/or the authorised company /parties is allowed to disassemble the unit after the service life has expired. Please keep an eye for the regulation to every components as well as the components manufacturer’s instructions to avoid any damage to persons or property.

All components, parts and resources for instance; oil refrigerant, water etc. must be disposed of in line with local regulations. All metal and plastic parts should be separated and sent for recycleing. Injection moulding parts are provided with meterial indentification; plastic extrusions are usually made of polyvinyl chloride (PVC).

Part 8-Filter Installation

The correct installation of air filters is an important requisite in the satisfactory functioning of any plant. It is necessary therefore to ensure that each filter is intact before use and only then installed in the manner recommended below.

To establish a dirty filter condition and as an aid to check the entire installation, a filter measuring device is required to be fitted across every bank of filters to enable accurate measurement of the air pressure drop.Unless otherwise stated in our offer each filter bank is supplied with a loose inclined gauge manometer, which should be fitted in a horizontal manner adjacent to the filters and connected with the plastic tubes provided.

Spareparts

If stated in our offer, the AHU may have been supplied with a spare set of filters. Any loose or spare filters should be stored in a dry & clean environment. Should you require spare filter media then please contact Dalair for information.

Side-Withdrawal

Filters are inserted by sliding them into rails provided. Blanking elements, where necessary, are factory fitted at the end of the rails by BENDIG.

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Combine Filter

Front withdrawal bag type filters are fitted by inserting them squarely into the frames and are retained by spring holding clips. Bag filters should be inserted with the pockets in the vertical position.

Hepa Filter These filters are generally supplied loose to be fitted on site when the installation is complete. Due to the high efficiency of these filters and the often 'clean room' standards that they must attain, the utmost care should be taken when replacing these filters to ensure there is no contamination of the system.

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Carbon Filter

Carbon filters are supplied loose to be fitted on site, when the installation is complete. The filters must be stored in a clean, dry environment and all packaging must remain in place until the time of use. This type of filter has a limited shelf life and, consequently, should be regularly inspected and changed.

Auto Roll Filter

Master Specification and Engineering Data



Safety Label

Upon working on the project, the design of the air-conditioning system shall elaborate draft operational rules with respect to the expected safety of the air-conditioning system. The draft rules shall include, for example, the following:

1) Qualification and professional skills of personal responsible operation, service and repair of the electrical equipment;

2) The obligation of the assembling firm of the air-conditioning system operator to carry out the initial inspection of the electrical equipment in accordance with EN 33 1500 (Electrical equipment inspection).

3) In the way of safety assurance(i.e. safe disconnecting from the voltage supply) during carrying out the service or repairs by e.g. a lockable service switch place on the air handling unit , locking the switched off position of the main switch, switching off the circuit the circuit breaker and safety announcement (safety mark and safety text the warning sign show on below)

Master Specification and Engineering Data



Part 9-Helpful Equations

The following equations may be helpful in diagnosing and correcting some problems in the field with air conditioning equipment.

Total Pressure = Velocity Pressure + Static Pressure Velocity Pressure (in w.g.) = (Velocity /4005 )2 (Velocity in feet per minute) Static Pressure 2 = Static Pressure 1x (Velocity 2 /Velocity 1) 2 Evap Cooler Efficiency = (Edb-Ldb) / (Edb-Ewb) Evap Cooler gal/hr = cfm x (Edb-Ldb) / 10,000

AHU Leak Class = ((% Leakage) x (Supply cfm) x 100) / (Area sq. ft) x (Test Pressure) ^0.65 wpd2 = wpd1 x (gpm2 / gpm1) 2 Water Velocity ft/sec = (gpm x 0.41) / (tube inside diameter) 2 Pump hp = (gpm x ft. head) / (3960 x efficiency) Steam lb/hr = cfm x (T2-T1) / 1000 Total Heat (Air) (BTU/Hr) = 4.5 x cfm x (T2-T1) Total Heat (Water) (BTU/Hr) = 500 x gpm x (T2-T1) Sensible Heat (Air) (BTU/Hr) = 1.085 x cfm x (T2-T1)

Edb = Entering Air Temp Dry Bulb Ldb = Leaving Air Temp Dry Bulb Ewb = Entering Air Temp Wet Bulb CFM = Cubic Feet per Minute wpd = Water Pressure Drop gpm = Gallons Per Minute Mass Flow = Lbs. per hour

Fan Laws

New cfm = Existing CFM x (New rpm / Existing rpm) New sp = Existing sp x (New rpm / Existing rpm) 2 New bhp = Existing bhp x (New rpm / Existing rpm) 3 Static Efficiency = (cfm x static pressure) / (6356 x bhp) Total Efficiency = (cfm x total pressure) / (6356 x bhp)

Belts and Drives

Pitch Diameter of Driver = (Driven Pitch Diameter x Driven Speed) / Driver Speed Pitch Diameter of Driven = (Driver Pitch Diameter x Driver Speed) / Driven Speed Speed of Driver = (Driven Pitch Diameter x Driven Speed) / Driver Pitch Diameter Speed of Driven = (Driver Pitch Diameter x Driver Speed) / Driven Pitch Diameter Belt length (pitch) = (2C)+1.57 x (D+d) + ((D-d))^(1/2C)

C = Center Distance D = Pitch Diameter of Large Sheave d = Pitch Diameter of Small Sheave

Convertible of Filter

Standard Filter Class

EN779 G1 G2 G3 G4 F5 F6 F7 F8 F9

EUROVENT EU1 EU2 EU3 EU4 EU5 EU6 EU7 EU8 EU9

DIN 24 184 A B1 B2 C1/C2 C3



Part‐9 Troubleshooting Guide

Symptom Source Situation Solution Delivery AHU Lack of proper part Make sure all the parts of the AHU are received

and undamaged. If the shipment is damaged or incomplete, contact Bendig and file the appropriate freight claim forms with the shipping company as necessary. Log any damage on the shipper’s paperwork.

Vibration Drive Assembly Fan and motor pulleys not Align pulleys per O&M manual. aligned

Fan and motor shafts are not Align the motor shaft with the fan shaft by parallel adjusting the motor position and/or installing shims. Belts slip Check tension and adjust as required. Replace worn or excessively stretched belts or pulleys. Clean dirty belts with soap and water. Do not use a belt dressing of any kind. Inspect belt sets

to determine if the belt wear is uniform and if the belt lengths are equal, if not replace the belts. Check the motor and fan to determine that all hold down bolts are secure. Check the belt model number and make sure it is properly sized.

Pulley Wobble Check the integrity and tightness of the bushing. Tighten or replace as needed. On pulleys without bushings, make sure the setscrews are properly tightened. Worn Pulley Grooves Replace pulleys.

Bearings Lack of Lubrication Lubricate as required. Increase the lubrication frequency and inspect the seals for excessive leaking. Make sure the lubricant is adequate for the application. Inspect the lubricant for contaminant induced friction causing excessive lubricant evaporation. Purge the system per the O&M manual and replace with fresh lubricant. (Cleaning bearings might be necessary). Make sure the bearings are securely on shaft.

Bearing Wear Replace the bearings as needed. Fan Unbalance Improper belt tension Check belt condition. Replace worn or cracked

belts as necessary. Adjust the belt tension per the O&M manual to achieve proper deflection.

Foreign material on impeller Clean foreign material from impeller and shaft. Inspect impeller for pit corrosion. Corrosion and Replace worn components. Rebalance the Thermal Distortion impeller at normal operating temperature. Check heating distribution on impeller and shaft. Correct as required. Bent shaft Replace or balance as required. Make sure the shaft is properly aligned. Fan not centered on shaft Adjust fan position as required.

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Symptom Source Situation Solution Noise Vibration All previously identified Refer to Vibration symptom section.

conditions Inlet Ring Impeller hitting inlet ring Center impeller on inlet ring. Repair or replace

damaged impeller. Housing Debris in housing Remove debris. Tighten loose parts. Motor Hum Check motor bearings. Correct as required.

Make sure lead‐in cable is secure. Correct single phasing of a 3‐Phase motor.

Air Velocity Leaks in duct work, Repair or replace as required. damaged fins, or coil leaks

Registers or grilles too small Enlarge registers/grilles as required. for application Compressed air leak Repair or replace pneumatic line, fitting, control, positioner, actuator, or gauge as needed. Coil has insufficient face Restrict airflow, select a new coil, or smaller fan. area for application Fan too large for application Do not use fan beyond design limitations. Add new fans as required. Duct work too small for Correct as required. application

Obstruction Dampers Make sure dampers are properly adjusted and are free to function unobstructed.

Sharp elbows Eliminate sharp elbows. Duct expansion Eliminate sudden expansions/contractions in ductwork.

Pulsation/Surge Restricted System Eliminate restrictions to improve fan operation. Fan pulsations and ducts are Verify fan speed. vibrating at the same Re‐orient ductwork to change operating frequency frequency.

Airflow Filters Clogged, Filter selection Make sure filter is correct for the application and Too Low that it is clean. Replace as required.

Coil Dirt clogged Clean coil per the O&M manual. Fan Fan running backward Reverse fan rotation. Swap two leads of a three phase motor per the O&M manual.

Fan speed too low Adjust pulley pitch diameter per the O&M manual. Cut‐off missing or not Inspect installation of cut‐off and install per properly installed vendor instructions. Impeller not centered on Adjust as required. inlet collar Impeller installed backward Re‐install properly.

Duct system Closed dampers Open dampers and inspect operators. Closed registers Open registers, check adequacy of lining materials, correct as necessary. Leaks in supply Repair as required. System is more restrictive to Rebalance system dampers and registers. flow than expected

Re‐circulation Fan inlet Obstruction Increase fan speed (per section 8.1) Correct obstructions with elbows, etc.

High Velocity air stream Increase fan speed. Correct elbows that are too obstruction sharp, as needed. Improperly designed turning vanes will cause obstruction in the part of the system where the velocity is high.

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Symptom Source Situation Solution Airflow Unit Leaks in fan wall separating Repair as required. Inspect for leaks around fan

fan outlet from fan inlet outlet at connection through cabinet bulkhead repair as identified.

Fan outlet not straight Straighten as required. Airflow Fan Fan speed too high Adjust pulley pitch diameter to reduce fan Too High speed.

System Filters not in place Check filter installation. Correct all installation problems. Check seams of filter frame. Make sure air is not passing through the seams of the frame. Correct as required. Registers/grilles not installed Install registers/grilles as required. Access door open Secure access doors. Improperly sized duct work Correct as required.

Improper Ambient Density of air different in test Adjust pulleys to obtain required CFM and Static conditions and application environment disregard static pressure. Check adequacy of

Pressure ductwork. System Too much or too little flow Adjust fan speed to achieve desired RPM.

resistance Static pressure high, CFM Make system less restrictive. Remove low obstruction in system. Clean/replace dirty filters. Clean dirty coil.

Fan Does Electrical Power turned OFF Apply power. Not Operate

Blown fuses/ open circuit Replace fuse/reset breaker and correct cause breakers as required. Broken fan belt Replace fan belt.

Motor Will Fuse Blown fuse/ open circuit Replace fuse/reset breaker and correct cause Not Start breakers as required.

Overload Overload trips Reset overload and correct cause as required. Connections Improper line connections Use supplied wiring diagram to determine

proper connections. Motor humming when a Check for loose connections and repair as switch is closed required. Motor acceleration Secure loose connections. Opposite rotation on Reverse any two motor leads at the line (3‐Phase motor) connection (see diagram on motor nameplates). Motor ceases to run after a Check for loose connections. Check adequacy short period of power supplies. Check and replace thermal overloads as required.

Motor Motor Fan clogged with dirt Clean as required. Over Heats

Line voltage too high/too low Check across AC line and correct (Step‐down transformer might be necessary). Partially shorted stator coil Consult the manufacturer for the best solution. Rotor rubs stator base Check motor bearings and re‐lubricate or replace as required. Motor Load Exceeds Rating Reduce load on motor – slow down fan.

Motor Noise Fan Fan rubbing cover Remove interference. Mounting Bolts Bolts loose Tighten as required.

Shaft Shaft bent Replace motor. Bearing Wear Pulley Diameter smaller than Refer to NEMA Sheave selection guide. recommended Replace pulley as directed.

Page 38



Symptom Source Situation Solution

Variable Short Belt Life Belt slippage Adjust belts to proper tension. Speed Drive Inefficient Function

Rubbing on drive guards or Eliminate obstruction and realign to obtain the other object proper clearance. Heated belts Shield belts, ventilate, and/or use grip notch belts. Grease on belts Inspect bearings for leaks. Clean the belts and the sheave.

Pulley Belt misaligned Realign drive with pulley set at new pitch diameter.

Pulley worn Replace. Center distance shorter than Use larger belts. Replace standard sheave with recommended a companion sheave.

Belts Misaligned sheave Realign sheave.

Vibration Adjust belt tension or replace as necessary. Arc of contact inadequate Improper belt tension. Increase center distance, or use grip notch belts, or use larger pulleys. Turnover in grooves Cord section damaged. Replace belts. Flat idler pulley Realign pulley. Replace if necessary. Belt squeal Adjust belt tension. Reduce load.

Squeaking Belts Excessively Stretched Replace belts. Excessive drive tension, Properly tension drive. Replace belts and install cord damaged during properly. installation Different brand name belts Replace with a new matched set of belts. used on same drive Driver and/or drive shaft Realign drive. shifted

Coil Does Steam valve Air operated, improper air Adjust as required. Not Operate failure pressure

Electrically operated but is Apply electrical power. without power

Loose electrical connection Repair connections as needed.

Wrong setting on manual Correct setting. valve Defective or improperly set Adjust or replace as needed. thermostat.

Steam trap Condensate backs into coil Check steam trap. Repair or replace as failure (Steam necessary.

Coil)

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Symptom Source Situation Solution

Coil Does Inadequate Boiler steam pressure too Adjust steam pressure or hot water setting as Not Deliver supply of steam low or hot water temperature needed. Adequate or hot water setting too low

Heat Thermostat Wrong set point Set to correct temperature.

Not properly located Relocate the thermostat. Defective Replace the thermostat

Coil Steam Coil undersized‐Insufficient Replace with larger coil. Check boiler controls. Pressure Hot water Lack of hot water Hot water pump undersized or malfunctioning.

Repair as needed. Finned Tubes Dirty finned tubes Vacuum or use air hose to clean dirt from finned

tubes. Airflow Low or no airflow See section on airflow.

Coil Leaks Brazed Internal corrosion Replace coil. connections

Crack in brazed joint Repair brazed joint.

Low Or No Thermostat Wrong set point Set to correct temperature. Cooling

Wrong location Relocate the thermostat Defective Replace the thermostat.

Airflow Low or no airflow See section on airflow. Coil Air in coil Vent coil.

Dirty coil Clean coil. Water Low flow rate Check flow rate check valves in water lines.

Check operation of control valves. Water temperature too high Check control valve operation. Check the operation of the chiller.

Pump Not working Check power to pump. Check fuses and replace if necessary. Check water filter. Clean or replace.

Refrigerant Low charge Check system for leaks. Recharge as necessary.

Superheat too high Check setting on thermostat expansion valve. Reset as required. Check system pressure and recharge if required.

Compressor Compressor not working Check power to compressor. Turn on or replace fuses as required. Compressor tripped out on internal overload. Wait and reset. Check system pressure. Reset limit switches. Compressor winding burned out. Replace compressor.

Compressor Open control circuit Perform continuity test of control circuit. Won’t Run Inoperative starter Replace.

Odors Unit Ambiance Odor source too near unit Remove odor source or place a barrier between unit and odor source.

Sump Algae Remove slime or micro organism in sump. Vent Vent not properly operating Correct as needed.

Drain pan Algae Check drain pan condensate piping for clogs. Check drain pan trap for proper design.

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Symptom Source Situation Solution Rapid Bleed System Water bleed system not Check bleed valve for clogging, clean, and Formation Of working readjust. Bleed off rate should be approximately

3‐6% of recirculating water.

Water supply High mineral content Increase bleed off rate. Check water treatment dispensing equipment. Consult with water treatment specialist. Flush sump and refill with fresh water more frequently.

Humidifier Steam valve Supply and/or control air Adjust pressure regulating valve. Repair or Does Not failure pressure too low replace control solenoid valve (EP‐1). Operate

Wrong setting on manual Correct setting. valve Defective or improperly set Adjust or replace as needed. humidistat

Page 41



Customer : XXX

Unit Tag # : AHU-GSP-1/3

By Date By Date

AHU sections 1/2 Covered all sections completely / Som/K. 11/1/99

with plastic tarps

Barry, Supply Fan 49J00309 De-tensioned belts / Som/K. 11/1/99

AHU sections 1/2 Ensure protection from elements Sun/W. 11/24/99 /

Barry, Supply Fan 49J00309 Rotated shaft by hand / Som/K. 11/24/99

10 hp Reliance Mtr P21G4901JB Rotated shaft by hand / Som/K. 11/24/99

* From Nameplate of AHU

Instructions :1. Refer to and follow any Non- BENDIG air handling unit manufactured component storage instructions. It is the Customer's

responsibility ot obtain and follow these instructions to maintain the equipment warranties.

2. Send a copy of this completed data sheet to metadc ltd. at the end of every

30 days that the unit is in storage.

Job Site Contact :

Name : John Q. Smith Phone : (333) 333-3333

Email : [email protected] Date Submitted : 11/29/1999

Appendix - A

Data Received

Unit Serial # :

Manf. Date

Nov 16,20XX

0278-11-00/0xx

Oct 19,20XX

BENDIG - Air Handling Unit Master specification/ Standard, Installation, Operation and Manual

2230 soi waddansamrong samrong nua muang samutprakarn 10270 www.metadec-ahu.com

Completed

Appendix-A Storage Verification Data Sheet

BENDIG air handling unit AHU Storage Verification Data Sheet

Item Component S/N Activity Verified

Page 42



Customer: Date Received

Signature: Unit Tag #:

Firm: Unit Serial #:

Address: Startup Date:

A ‐Unit Exterior D ‐Electrical

1 General appearance 1 Verify proper system components per the drawings

Assembly correct to DRS Marlo Coil drawing & O & M 2 Verify proper field wiring

manual 3 Verify proper supply service to the unit

3 Paint integrity 4 Verify all electrical connections are tight.

4 No visible leak areas, especially field joints E ‐Blower Section

5 Hardware and fasteners securely installed Verify proper components per the drawings

Verify correct and level unit installation on base if custom O & M manual only)

and /or roof curb Verify removal of isolator base shipping hardware

7 Doors: correct sealing and operation (ensure floor holes are caulked)

8 Door handles: securely installed 3 Verify integrity of isolators and base

B ‐Unit Interior 4 Verify integrity of flexible duct sections

1 General appearance 5 Verify proper sheave alignment and belt tension

Correct to DRS Marlo Coil submittal Verify proper variable inlet vane operation

(if custom O & M manual only) when applicable)

3 No visible leak areas, especially field joints 7 Initial bearing lubrication Date: _________________

4 Hardware and fasteners securely installed 8 Determine subsequent lubrication interval

Dampers and actuators properly installed Verify lubrication lines are full of grease

(if equipped) (if bearings have remote fittings)

6 Proper fit and seal of filters and frames Verify smooth blower rotation

C‐Coil Section (free wheeling operation)

(See Coil O & M manual for proper installation) Verify tightness of all setscrews,

1 General appearance bolts and fasteners

Verify proper plumbing F‐Initial Startup

(including valving and/or trapping) 1 Verify proper operation of humidifier (if equipped)

3 Verify no coil / piping leaks 2 Verify proper fan rotation

Verify proper drain pan connection, Trap size If a VFD was installed, verify proper fan rotation in

and draining (when possible) the “auto” and “bypass” modes

Verify proper steam system piping 4 Follow belt tension guidelines in section 10.1

(as applicable) Verify tightness of fan and motor bolts, setscrews,

6 Verify that coil is vented prior to start‐up and fasteners after a brief operation period.

Comments:

5

APPENDIX B BENDIG AHU Installation / Startup Verification List

See Startup Section 6.0 and 7.0

5

1

2

6

9

2

6

2

5

2

4

From Nameplate of AHU

From Nameplate of AHU

10

11

3

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Note:

Master Specification & Engineering Data

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