LV-Z Series...Hanging the Fan Coil Unit-5-Module LVZ LV-Z Series Fan Coil Installation (5/28) In...

Module-LVZ-Series-Fan-Coil-Installation-111020

Includes:LV-Z Series Fan Coils

Product SpecificationsWiring and WEG Settings

Specifications & Sizing

From the Manufacturers ofHi-Velocity SystemsTM

www.hi-velocity.com

LV-Z SeriesInstallation Manual

www.hi-velocity.com

http://www.hi-velocity.com

© 1995-2020 Energy Saving Products Ltd.© 1995-2020 Energy Saving Products Ltd.

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Table of Contents

Setting up your LV-Z System - Pg. 4Unit Selection, Quality Assurance

Fan Coil Placement - Pgs. 5Placement, Unit Configuration, Clearances

Water Cooling Module (WCM) - Pg 6

Hot Water Coil (HWC) Add-on - Pg 6

Electric Strip Heater (ESH) - Pg. 7

Return Air - Pg. 7Return Cutout Dimensions, Return Air Base, Filter Rack

Hi-Velocity Air Purification System Pg. 8Hi-Velocity Air Purification System, HE PS Dimensions

User Guide Pg 8IAQ, Filter Maintenance, System Efficiency

Installation Check List - Pg. 8

PSB Circuit Board & WEG Drive - Pgs. 9-16PSB Board, WEG Drive, PSB Wiring Diagram, Extended WIring Diagrams

Trouble Shooting - Pgs. 17-24Motor Running Too Fast, Motor Running Too Slow, Motor Not Running, 24V Clg, 24V

Htg., Outdoor Unit, Short Cycling

Appendix Pages - Pgs. 25-26LV-Z Fan Coil Specifications (Standard & Metric, Quick Product Sizing Guide)

Warranty Information - Pg. 27

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LV-Z Fan CoilSpecs Pg. 25

Electric Strip Coil

Water Coil ModuleHot Water Coil

All Product Sizing on Pg. 26

Return Air Hi-Velocity Air Purification System

The LV-Z SystemBy Energy Saving Products Ltd.

Heating Options Cooling Options

Other Options

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Module LVZLV-Z Series Fan Coil Installation (3/28)


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Fan coil units specified in this section shall be designed as a closed loop hydronic fan coil system, with published BTUH ratings and entering water temperatures between 110°F and 190°F. The system shall allow for heating, DX or chilled water cooling, and heat pump applications with electric coil back-ups. Entering water temperature and BTUH outputs shall match performances listed on Pg. 25.

Fan coil units shall be a total indoor air quality system complete with heating, cooling and air filtration, with the possibility of humidity control and fresh air make up. The fan coil must be factory manufactured, assembled and tested.

All equipment furnished under this specification shall comply with the standards set out by the following standards organizations:

CSA Canadian Standards Association

CE European Conformity

UL Underwriters Laboratories

When sizing an LV-Z fan coil for a residential system, it is necessary to have an accurate heat loss/gain done for the structure. This will ensure the proper equipment is used for cooling and heating. A heat loss/gain is done for each room, with all rooms added together to find the total BTUH load for the building. With the total load known, the appropriate fan coil can be chosen from Pg. 25.

Energy Saving Products Ltd. reserves the right to discontinue, make changes to, and add improvements upon its products at any time without public notice or obligatiion. The descriptions and specifications contained in this manual were in effect at printing. Some illustrations may not be applicable to your unit.

DisclaimerThe fan coil units shall be designed, rated, and approved by

CSA/UL.

The fan coil units shall have pre-wired controls consisting of a 24V transformer, printed circuit board and variable frequency drive. The circuit board shall be capable of providing heating, cooling and constant fan. Motors shall be 3 phase with published amp draws.

Sweat water connections are 3/4” for the LV-Z 1050 and 1” for the LV-Z 1750. All lines should be piped so as not to restrict use of the access panels, filter section, or electrical enclosure.

Refer to the back of this manual for all specifications, measurements, etc.

Fan coils are to be located indoors, however, attic, crawl space and garage conditions are fully acceptable. The fan coil unit can be positioned in a Horizontal, Hi-Boy, or Counterflow position and can be suspended from the ceiling or placed directly on the floor.

When potential for gravity flow of the hot water exists, spring check valves may be needed on both the supply and return lines.

The LV-Z fan coil is manufactured with a direct drive, permanently lubricated motor that is mounted within the blower. All LV-Z fan coils are single side access. The blower assembly can be easily slid out by removing the electrical box and then removing the three mounting bolts that attach the blower to the center plate.

Fan Coils

Quality Assurance

Please read the ENTIRE manual before beginning installation as this will help avoid mistakes that may cost time and money.

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IMPORTANT: The LV-Z Fan Coil is not to be used for temporary heating or cooling during the construction of the structure. If used in this capacity all warranties will be null and void.


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Fig. 01 - Hi-Boy

Fig. 02 - Counterflow

Fig. 03 - Horizontal installation

Quite often, the best location for the fan coil unit is suspended from the ceiling of the mechanical room, in the horizontal position (Fig. 03). This will allow for more floor space in the room, and will minimize the duct work needed to connect to the fan coil unit.

Table 01 – Fan Coil ClearancesUnit Inches

LV-Z-1050* 22”LV-Z-1750 32”*Add an additional 4” for Electric Strip Coils

(not available for the LV-Z-1750)

Clearance is only needed on the access side of the units. However, ensure that there is a small space between the unit and any other surface to prevent vibration transfer. In order to maintain and service the fan coil unit, the minimum clearances required on the access side are (Table 01).

The Hi-Velocity fan coil can be suspended in any position, using most industry standard hanging support systems. Redi-Rod, All Thread, C-Channel or Unistrut are some of the building code acceptable hanging systems. Use these in conjunction with spring or rubber isolators to ensure a sturdy hanging support system. These isolators will absorb most of the vibrations generated by the fan coil system, eliminating any sound transfer.

As previously stated, the fan coil can be positioned in many different orientations. When placed in the Hi-Boy position, supply air is fed from the top of the unit (Fig. 01). When placed in the Counterflow position, supply air is fed downwards from the unit (Fig. 02).

Due to the size of the RCM/RPM-E Cooling Modules and the high volume of air produced by the LV-Z fan coil Unit, the use of the RCM/RPM-E coils with the LV-Z fan coil is not advised. For refrigerant cooling needs, a third party blow through coil such as an A-Frame or N-Frame coil is suitable.

Securing the Fan Coil to the Hanging System

Refrigerant Cooling Module

Hanging the Fan Coil Unit

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In most cases, fastening the hanging system near the corners of the outside cabinet of the fan coil will be acceptable. However, in some cases, brackets may be needed to secure the fan coil to the hanging system.

Clearances

When installing the fan coil, keep these points in mind:

- Serviceability and access to the unit.

- Maximizing usable floor space.

- Location of heating/cooling source to the fan coil.

Placement


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The water coil comes as a module and must be installed in the vertical position on the return air side of the fan coil. The WCM/WM come supplied with two L mounting brackets for connection to the fan coil (Fig. 06). For WCM/WM dimensional information and sweat water connection sizes refer to the manual shipped with the coil, also available on our website.

When the potential for gravity flow of the hot water exists, check valves may be needed on both the supply and return lines. Figs. 08 and 09 give an example of this. All lines should be piped so as not to restrict access to the front panels, filter section, or electrical enclosure. Size your supply and return lines according to Table 02.

The Hot Water Coil Add-on is easily installed in the LV-Z fan coil. With heating, condensate is not a consideration and the coil can be mounted on the supply side of the blower (Fig. 07).

With the removal of the front panels, the coil can be slid in place on the supply side of the blower. For Hot Water Coil dimensional information refer to our website.

Table 02 – WCM/WM pipe sizingZone BTUHHeat loss

Pipe Sizeup to 40 feet

Pipe Size40 – 100 feet

0 - 35,000 5⁄8” 3⁄4”35,001 - 70,000 3⁄4” 1”

70,001 - 140,000 1” 1 1⁄4”

Fig. 07 - Hot Water Coil easily slides into the fan coil

Figs. 08 and 09 illustrate typical pipe runs from a dual purpose hot water tank to a fan coil. These drawings are only for reference as all piping has to be run according to local code.

Fig. 08 - Hot water tank: Side take-offs

Domestichot watermixing valve(optional)

Domesticcold water

DualPurposehot water

tank

SUPPLY

RETURN

SUPPLY

RETURN

Fan Coil

C

C H

H

Fig. 09 - Hot water tank: Without side take-offs

Domestichot watermixing valve(optional)

Domesticcold water

DualPurposehot water

tank

SUPPLY

RETURN

Fan Coil

C

C H

H

Fig. 06 - Mounting Brackets

Hot Water Coil Add-on

Piping the WCM/WM

Water Coil Module (WCM/WM)

Piping the Hot Water Coil

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The Electrical Strip Heater slides into the fan coil, on the supply side of the blower (Fig. 07). Once the front access doors have been removed, the ESH can be slid into place.

The ESH is labeled with a directional airflow sticker; when placing the ESH the sticker shall be in the direction of the air flow. Currently, the ESH is only available for use with the LV-Z 1050.

For Electrical Strip Heater Specifications, please refer to the manual shipped with the coil, also available on our website: www.hi-velocity.com

The return air duct is not supplied with the LV-Z Fan Coil System. It is to be supplied and installed by the contractor. The return air and fresh air make-up ducts are to be installed according to local building code.

All LV-Z fan coils are shipped with the return air knockouts pre-measured for multiple configurations. Table 03 contains the pre-measured dimensions for the return air knockouts.

Before wiring in the ESH, make sure all power sources are disconnected. The wiring diagram is on the inside of the ESH front panel, or refer to Pg. 10. Use only wires suitable for 167ºF (75ºC); wires shall be sized according to local electrical code.

Use only class 2 wiring for the Control Circuit connections between the heater terminal 1, terminal 2 and the zone valve terminals. Please note, the ESH must be wired to a dedicated breaker, separate from the fan coil.

Fig. 10 - Return air cutout

Table 03 – Return Air Cutout DimensionsModel Dimensions

LV-Z-1050 141/2” X 131/2”LV-Z-1750 21” X 177/8”

Once the placement of the return has been decided, the return air knockout(s) can be marked and cut (Fig. 10). The pre-measured guide cuts on the fan coil should always be used; this will guarantee maximum airflow across the coil.

All return air bases come acoustically lined with half-inch sound absorbing insulation.

Table 04 – Return Air Base dimensionsA B C D

RA-70/1050 221⁄2” 213⁄4” 181⁄2” 191⁄2”RA-1750 221⁄2” 213⁄4” 241⁄2” 261⁄2”

Energy Saving Products manufactures a return air base that matches up to the fan coil units.

Fig. 11 – Return Air Base

Table 05– Filter Rack DimensionsLength Width Depth Filter Opening

LV-Z-1050 181/2” 191/2” 3” 11/8”LV-Z-1750 241/4” 261/2” 3” 11/8”

Return Air

Electrical Strip Heater (ESH)

Return Air Cutout

Return Air Base (Optional)

Filter Rack (Optional)

Wiring the Electrical Strip Heater

1” Flanged in for Fan Coil Placement

Available from Energy Saving Products is a 3” (76mm) Filter Rack. Filters are 1”(25mm) thick Merv 3, and the filter medium is approximately 14% efficient. Any after market filter may be used with the Hi-Velocity Filter Rack. (See Dimensions Below)

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Easily installed on any Hi-Velocity or existing HVAC System, the HE PS gives consumers unsurpassed indoor air quality. The HE PS will work at the airflow rates of the LV-Z 1050 only. For 3 stage filtration on the LV-Z 1750, we recommend using the HE PS 1750.

Three powerful technologies in one Air Purification System:

• Electrostatic MERV-13 Filter Removes Allergens • Photo-Catalytic Oxidation destroys toxic chemicals

and eliminates household odors• Ultraviolet Light Kills Disease Germs on Contact

Ensure that there is always a filter in place and check every month to ensure that the filter is clean. The amount of time between filter changes and cleaning will be dependant upon the living habits of the homeowner. With a clean air filter, you not only have cleaner air to breathe, but you will also help maintain unit efficiency, as well as increase the operating life of the unit.

The 1” Merv 3 filtering medium supplied by Energy Saving Products Ltd. can be cleaned and re-used. If the filter needs cleaning, the system should first be shut down and the filter removed. Once out of the unit, the filter can be vacuumed on the pink side and washed on the white side. Once the filter has been vacuumed, cleaned, and completely dried, it can be replaced in the unit. Note that the pink side of the filter faces the blower and the white side towards the return air. A filter can generally be cleaned a few times, if re-used too often it will restrict airfow.

A big misconception that people have is that by turning off the air conditioning when they leave home, they save on cooling costs. This is not necessarily true as the system will need to run longer and harder when pulling the house down to temperature after being shut off for a large amount of time. Keeping the temperature within a small range when there are no loads from human use will result in less overall energy consumption.

Ensure that all electrical connections are tight, and that any packing or shipping restraints are removed from both the fan coil, and the outdoor unit. With the power to the condensing unit off, check the thermostat for normal operation and proper airflow from all vents. Do not run the fan coil without a filter in place.

Observe the system pressures during the initial start-up and charging of the system. Refer to the outdoor or indoor coil manufacturer’s charging guidelines. Check the voltage and amp draw of both the fan coil, and the outdoor unit. The voltages must be within 10% of the rating plate data. If more than 10% is noted, contact your local electrical company. Check that the amp draws of both units are within the information printed on the unit rating plates.

Installation Checklist

Hi-Velocity Air Purification System

LV-Z User Guide

Indoor Air Quality (IAQ)

Filter Maintenance

System Efficiency/Performance

In the event of difficulty during the start-up procedure, please refer to the trouble shooting flow charts (Pgs. 17-24) to assist you in determining the problem.

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The LV-Z Series Fan Coil utilizes a dual function Circuit Board. This circuit board makes zoning simple and easy, eliminating the need for by-pass dampers and dump zones. It also makes adjustment to airflow quick with the use of trim pots for direct control.

PSB Circuit Board

Features:• Wiring the circuit board is a quick and simple task.• Clearly labeled connections.• No additional relays typically required.• When the PSB is set to “Auto”, it allows for automatic airflow adjustments, according to the static pressure of the supply air, making zoning a breeze.• “Manual” mode allows for direct speed control of the fan anywhere from 0-100% capability. LV-Zs come standard in Manual Mode.• Fan speeds in both functions are individually set for cooling, heating and constant fan using the three trim pots located on the PSB.• Circuit board is capable of controlling boilers, dual purpose hot water heaters, heat pumps, and geothermal systems, as well as our manufactured slide-in electric strip heaters (ESH).• The circuit board is also designed to send control signals to cooling sources such as condensing units, chillers, heat pumps and geothermal systems.• Circuit board features an auxiliary relay with dry contacts connections, so that any applications requiring 24v, 120v, 230v or dry contacts (boilers, hot water heaters, heat pumps & humidifiers) can be automatically started when there’s a call for heat.• Circulator timer chip is provided to prevent water stagnation in potable water systems and to provide pump rotor protection for water source heating and cooling.

• If you wish to have the timer cycle operate at a specific time of day, simple turn off power to the fan coil unit for ten seconds at that time and then turn the power back on.• If you do not need to use the timer, move the jumper header from the On pins to the Off pins and it will be disabled.• Circuit board is equipped with an emergency disconnect feature. If there’s an emergency this feature will de-energizing all fan speeds and connected equipment.• For this emergency disconnect feature to be active a jumper header must be remove from the pins located close to the emergency disconnect terminal strip.• A fan delay is programmed into the circuit board. This delay will prevent the fan from starting for 20 seconds on cooling, 30 seconds on heating, and purge for 30 seconds on shut-down. This delay is beneficial in certain applications to give the heating or cooling equipment a “head start” before the fan turns on.

Function:• Manages input power and through the use of a transformer it supply 24vac to additional equipment.• Organizes all thermostat inputs and prioritizes them accordingly. • Sends a 0-10vdc output to the VFD, dependent on how fast it wants the fan to run.

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Auxiliary Relay Terminals (Heating)

VDC Control Method Switch

Pressure Sensor Indicator Light

Fan Adjustment Trimpots

Operation Mode Indicator

0 - 10v DC Output

Fan Delay On/Off Switch

T’Stat Connections

24v Auto-Reset

Fuse

Condenser/Zone Valve Connections

Pump Timer on/off Switch

Emergency Disconnect


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CFW300 WEG Variable Frequency Drive

Parameter Function Range Unit DescriptionP002 Motor Speed Output 0 to 66 Hz Indicates the VFD Output Frequency in HertzP003 Motor Current Output 0 to 1.5 x Inom A Indicates the VFD Output Current in AmperesP004 DC Link Voltage 0 to 524 V Indicates the VFD DC Link Voltage in VoltsP007 Motor Voltage Output 0 to 240 V Indicates the VFD Output Voltage in Volts

P030 (P008) Module Temperature 25 to 110 ºC Indicates the VFD Temp in CelsiusP050 (P014) Last Fault 00 to 41 FXXX (EXX) Indicates the Code of the last occurred Fault (Error)P060 (P015) Second Fault Occurred 00 to 41 FXXX (EXX) Indicates the Code of the 2nd last occurred Fault (Error)P070 (P016) Third Fault Occurred 00 to 41 FXXX (EXX) Indicates the Code of the 3rd last occurred Fault (Error)

Features:• Purposely oversized to ensure increased reliability and higher efficiencies at peak load• Features inherent with VFD allows for minimum power consumption at reduced loads (


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-11-


LV-Z Fan Coil - PSB Circuit Board/CFW300 WEG Wiring DiagramPLEASE NOTE: CFW10 has slightly different appearance, terminals and wiring are the same.

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AL

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INE

VO

LT

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E

A1

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OR

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LLY

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EN

A2

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OM

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R IN

PU

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AIL

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ER

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PE

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NO

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HT

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EC

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LE

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ER

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ING

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R (B

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PE

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: LE

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ICK

ER

(ON

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F)

TO

SH

OW

TH

AT

IT IS

PR

OP

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LY

SE

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ING

PR

ES

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IN T

HE

SY

ST

EM

.

* NO

LIG

HT

IND

ICA

TE

S T

RIM

PO

T IS

AB

OV

E N

OR

MA

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PE

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E (C

OU

NT

ER

CL

OC

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ISE

DE

CR

EA

SE

).

* SO

LID

LIG

HT

IND

ICA

TE

S T

RIM

PO

T IS

BE

LO

W N

OR

MA

L O

PE

RA

TIN

G

RA

NG

E (C

LO

CK

WIS

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CR

EA

SE

).

MA

NU

AL

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DE

: LE

D 2

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ST

EA

CH

OF

TH

E A

IR F

LO

WS

TO

DE

SIR

ED

CF

M/L

PS

OU

TP

UT.

10

20

20

HE

-Z/L

V-Z

11

0V

/22

0V

CA

UT

ION

FO

R S

ING

LE

ST

AG

EC

OO

LIN

G O

PE

RA

TIO

N

US

E Y

2 O

TH

ER

WIS

E T

HE

F

RE

EZ

ES

TA

T W

ILL

BE

BY

PA

SS

ED

N

Neu

tral w

ire (N

) o

nly

need

ed

w

hen

110v is

re

qu

ired

from

th

e L

an

d N

te

rmin

als

(J4)

W1W2CRY2Y1DO/B G

F1

AU

XIL

IAR

Y R

EL

AY

(HE

AT

ING

)

CO

OL

HE

AT

FA

NL

ED

L1

J8

ON

OFF

TIMERH2

AUTO

MAN

MODEH3

ON

OFF

DELAYH4

J5

J7

J4

U2

J3

R8

R7

R6

GC

HF

318.29 Pcbw-002sep-043

J2

N

H1

J9

J1

LE

D

L2

PSB CIRCUIT BOARDTHERMOSTAT

24v O

UT

PU

TE

ME

RG

EN

CY

DIS

CO

NN

EC

T

110-1

27 V

AC

110-1

27/1

/50-6

0

Ri

Ro

CC

L2 L2NL1L1

RY

1W

2W

1F

ZF

ZY2

C

A3

A2

A1

LN

PE U V W

1 2 3 4 5 6 7 8 9 10 11 12

WE

G C

ON

TR

OL

LE

R

PE L/L1N/L2

PP IIOO

N L1

WH BK

LINE IN

A3

A2

A1

LN

G

Gro

un

d

N

WH

RG

BK

MO

TO

R L

EA

DS

PL

UG

(3 P

HA

SE

)

CF

W 3

00

110-1

27v

PE L/L1N/L2

Eq

uip

men

tG

rou

nd

11

0-1

27

v P

OW

ER

CA

BL

E

+-

Red

24v / 2

0va

TR

AN

SF

OR

ME

R

BlackOrange

White

TR

IM P

OT

S (C

OO

LIN

G, H

EA

TIN

G,

AN

D C

ON

STA

NT

FA

N)

- A

TM

OS

PH

ER

IC P

RE

SS

UR

E

+ D

UC

T P

RE

SS

UR

E

RedBlack

0-10 VDC

Red Wire (+)

Black Wire (-)

FIE

LD

WIR

ED

PE U V W

1 2 3 4 5 6 7 8 9 10 11 12

WE

G C

ON

TR

OL

LE

R

PE L/L1N/L2

PP IIOO

W1W2CRY2Y1DO/B G

F1

AU

XIL

IAR

Y R

EL

AY

(HE

AT

ING

)

CO

OL

HE

AT

FA

NL

ED

L1

J8

ON

OFF

TIMERH2

AUTO

MAN

MODEH3

ON

OFF

DELAYH4

J5

J7

J4

U2

J3

R8

R7

R6

GC

HF

318.29 Pcbw-002sep-043J2

N

H1

J9

J1

LE

D

L2

PSB CIRCUIT BOARDTHERMOSTAT

24v O

UT

PU

TE

ME

RG

EN

CY

DIS

CO

NN

EC

T

110-1

27 V

AC

208-2

40/1

/50-6

0

Ri

Ro

CC

L2 L2NL1L1

RY

1W

2W

1F

ZF

ZY2

C

A3

A2

A1

LN

WH

RG

BK

MO

TO

R L

EA

DS

PL

UG

(3 P

HA

SE

)

CF

W 3

00

208-2

40v

PE L/L1N/L2

Eq

uip

men

tG

rou

nd

20

8-2

40

v P

OW

ER

CA

BL

E

+-

TR

IM P

OT

S (C

OO

LIN

G, H

EA

TIN

G,

AN

D C

ON

STA

NT

FA

N)

- A

TM

OS

PH

ER

IC P

RE

SS

UR

E

+ D

UC

T P

RE

SS

UR

E

RedBlack

0-10 VDC

Red Wire (+)

Black Wire (-)

NL2 L1

L2 WH BK

LINE ING

rou

nd

G

24v / 2

0va

TR

AN

SF

OR

ME

R

White

BlackRed

Orange

CFW

300 LV-Z / HE-Z / VFD

NO

TE: CFW10 H

AS SLIGHTLY D

IFFERENT APPEARAN

CE - TERMIN

ALS AND

WIRIN

G ARE THE SAM

E


www.hi-velocity.com

LV-Z Fan Coil - PSB Circuit Board Wiring

-12-

*Note: FZ to FZ recommended to be wired to Freeze Stat (Anti-Ice Control). For chilled water applications, a jumper between FZ to FZ must be installed to complete the Y2 - 24V Signal to Y on Condenser.

24 VAC Input terminals (tstat connections):

W1: 1st stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot.

W2:

2nd stage Heating, Runs at the heating speed when 24v (R) is supplied, set by the heat trim pot. The difference between a W1 call and a W2 call is the output terminal that will be energized with 24v. (W1 energized on t-stat terminal strip will provide 24v to W1 on output terminal strip, W2 energized on t-stat terminal strip will provide 24v to W2 on output terminal strip.)

C: Common

G: Constant Fan, Runs at the Constant Fan speed when 24v (R) is supplied, set by the Fan trim pot.

R: 24 volt supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)

Y2: 2nd stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot.

Y1:

1st stage Cooling, Runs at the Cooling speed when 24v (R) is supplied, set by the Cool trim pot. The difference between a Y1 call and a Y2 call is the output terminal that will be energized with 24v. (Y1 energized on t-stat terminal strip will provide 24v to Y1 on output terminal strip, Y2 energized on t-stat terminal strip will provide 24v to Y2 on output terminal strip.)

D: Runs at 70% Cooling speed when 24v (R) is supplied, set by the Cool trim pot.

O/B: Heat Pump Reversing

Fan Speed Priority Sequence (from highest to lowest): D=1st Y=2nd W=3rd G=4th

24 VAC Output terminals (24v output connections):

R:24 volt Supply (Note: As long as Transformer is connected & the Fire Disconnect/Jumper Pin Header is Present)

C: Common

Y1: 1st Stage Cooling Equipment

Y2: 2nd Stage Cooling Equipment*

W2: 24v Output to 2nd Stage Heating Equipment.

W1: 24v Output to 1st Stage Heating Equipment.

FZ: Freeze Stat Connection*

FZ: Freeze Stat Connection*



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LV-Z Fan Coil - PSB Circuit Board Wiring Cont’d

-13-

Emergency Disconnect:

C: Common

C: Common

Ro:

Provides 24VAC to the entire PSB board. In order for “Ro” to receive power it must be con-nected to terminal “Ri”. This can be done via the three pin jumper header (H1) located above the terminal strip, a wire jumper or normally closed safety device installed between “Ro” and “Ri”. The jumper pin header (H1) will need to be removed to activate the emergency disconnect option.

Ri: Receives 24VAC direct from the transformer. Power must then be sent to the “Ro” terminal to be distributed throughout the rest of the PSB board.

3 Pin Jumper Terminals:

H1: Emergency Disconnect

H2 Timer:Pump timer cycles the pump on for 5 minutes every 24 hours to prevent stagnant water. (on/off) The jumper pin header (H2) will need to be in the ON position for the timer to be active.

H3 Mode:

Switches the control method used by the PSB to control motor speed. “Auto” uses the pressure transducer in order to modulate fan speed to maintain a constant supply pressure.“Man” allows for direct speed control of the motor by-passing the pressure transducer. The jumper pin header (H3) determines the control method.

H4 Delay: Cooling/20 second, Heating/30 second fan delay, and 30 second post purge. The jumper pin header (H4) will need to be in the ON position for the delay to be active.

Auxiliary Heating Relay:

N: Neutral

L: Line Voltage

A1: Auxiliary Relay Normally Open

A2: Auxiliary Relay Normally Closed

A3: Auxiliary Relay Common

Control Signal:

J8: 0-10 Volt DC Output to VFD



www.hi-velocity.com

Extended wiring diagrams for the various applications the LV-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.

LV-Z Fan Coil - Extended Wiring Diagrams

-14-

115

VA

C R

EL

AY

WIR

ING

A3

A2

A1L N

24 V

AC

RE

LA

Y W

IRIN

G

A3

A2

A1L N

R

DR

Y C

ON

TAC

TS

RE

LA

Y W

IRIN

G

A3

A2

A1L N

SA

MP

LE

AU

XIL

IAR

Y R

EL

AY

WIR

ING

OP

TIO

NS

FO

R H

EA

TIN

G (

W1 O

R W

2)

C

SA

MP

LE

AU

XIL

IAR

Y R

EL

AY

WIR

ING

OP

TIO

NS

FO

R H

EA

TIN

G (

1 S

TA

GE

- W

2 O

NLY

)

A3

A2

A1L N

115v

C

IRC

UL

AT

OR

DR

Y C

ON

TAC

TS

AN

D 1

15 V

AC

RE

LA

Y W

IRIN

G

DR

Y C

ON

TAC

TT

O B

OIL

ER

EX

TE

RN

AL

SP

DT

RE

LA

Y24

VA

C C

OIL

FZW1

Y2

Y1 FZW2

TT

CR

R

- 2

4 V

AC

OU

TP

UT

W1 -

FIR

ST

STA

GE

HE

AT

W2 -

SE

CO

ND

STA

GE

HE

AT

(

OR

SIN

GLE

STA

GE

) Y

1 -

FIR

ST

STA

GE

CO

OLIN

G Y

2 -

SE

CO

ND

STA

GE

CO

OLIN

G (

OR

SIN

GLE

STA

GE

) C

- 2

4 V

AC

CO

MM

ON

G

- T

HE

RM

OS

TA

T F

AN

SW

ITC

H D

- P

RIO

RIT

Y (

RU

NS

AT

W S

PE

ED

)O

/B -

HE

AT

PU

MP

RE

VE

RS

ING

VA

LVE

N

- N

EU

TR

AL

L

- L

INE

VO

LTA

GE

A1 -

AU

XIL

IAR

Y N

OR

MA

LLY

OP

EN

A2 -

AU

XIL

IAR

Y N

OR

MA

LLY

CLO

SE

D A

3 -

AU

XIL

IAR

Y C

OM

MO

N

FZ

- F

RE

EZ

E S

TA

T F

Z -

FR

EE

ZE

STA

T W

1 W

2-

CO

ND

EN

SIN

G U

NIT

(Y

2)

24V

OU

TP

UT

C

-

R

- 2

4 V

AC

- H

EA

TIN

G (

W1)

24V

OU

TP

UT

- H

EA

TIN

G (

W2)

24V

OU

TP

UT

Y2

Y1 -

CO

ND

EN

SIN

G U

NIT

(Y

1)

24V

OU

TP

UT

24 V

AC

CO

MM

ON

OU

TP

UT

FO

R S

ING

LE

STA

GE

OP

ER

AT

ION

U

SE

W2 &

Y2 T

ER

MIN

AL

S

YC

CO

ND

EN

SE

R

THE

RM

OS

TAT

WC

RY

G

AN

TI-

ICE

CO

NT

RO

L

WC

GR

Y

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

1 S

tag

e C

oo

lin

g 1

Sta

ge

He

ati

ng

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

O/B

Y2

Y1

RC

W1

CO

ND

EN

SE

R

THE

RM

OS

TAT

AN

TI-

ICE

CO

NT

RO

L

EW

2C

RY

2G

Y1

2 S

tag

e C

oo

lin

g 1

Sta

ge

He

ati

ng

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

O/B

Y2

Y1

RC

W1

CO

ND

EN

SE

R

EW

2C

RY

2G

O/B

THE

RM

OS

TAT

Y1

AN

TI-

ICE

CO

NT

RO

L

2 S

tag

e C

oo

lin

g 3

Sta

ge

He

ati

ng

He

atp

um

p

EW

2C

RY

2G

O/B

Y1

AN

TI-

ICE

CO

NT

RO

L

O/B

YY

RC

W1

CO

ND

EN

SE

R

EW

2C

RY

GO

/B

THE

RM

OS

TAT

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

1 S

tag

e C

oo

lin

g 2

Sta

ge

He

ati

ng

He

atp

um

p

YR

GC

W2

EO

/B

HE

AT

ING

MO

DE

: R

EF

ER

TO

A

UX

ILIA

RY

CO

NTA

CT

IN

FO

RM

AT

ION

FO

R W

1 A

ND

W2

HE

AT

ING

MO

DE

: R

EF

ER

TO

A

UX

ILIA

RY

CO

NTA

CT

IN

FO

RM

AT

ION

FO

R W

1 A

ND

W2

SA

MP

LE

AU

XIL

IAR

Y R

EL

AY

WIR

ING

OP

TIO

NS

FO

R H

EA

TIN

G (

W1 O

R W

2)

24v,

DR

Y C

ON

TAC

TS

AN

D 1

15 V

AC

RE

LA

Y W

IRIN

G

W1

W2

CR

Y2

Y1

DO

/BG

A3

A2

A1L N

TT

DR

Y C

ON

TAC

TT

O B

OIL

ER

EX

TE

RN

AL

SP

DT

RE

LA

Y24

VA

C C

OIL

11

5 V

TO

C

IRC

UL

AT

OR

FZW1

Y2

Y1 FZW2

CR

(W

2) 2

4v O

UT

PU

T

(W1)

24v

OU

TP

UT

W1

- F

IRS

T S

TAG

E H

EA

T

W2

- S

ING

LE S

TAG

E O

R 2

ND

STA

GE

HE

AT

HE

-Z-L

V-Z

-Ex

ten

de

d-W

irin

g-P

g-1

-08

26

15



www.hi-velocity.com

LV-Z Fan Coil - Extended Wiring DiagramsExtended wiring diagrams for the various applications the LV-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.

-15-

CH

ILL

ED

WA

TE

R W

IRIN

G

1 S

tag

e C

oo

ling

(On

ly)

c/w

ch

illed

wa

ter c

ircu

lato

r1

Sta

ge

Co

olin

g c

/w c

hille

d w

ate

r circ

ula

tor

2 S

tag

e C

oo

ling

c/w

ch

illed

wa

ter c

ircu

lato

r

W1

W2

CR

Y2

Y1

DO

/BG

RY1W2W1FZFZ Y2 C

A3A2A1 LN

J5 J7

J4

YC

CH

ILLER

CO

NTA

CTS

CR

YG

THE

RM

OS

TAT

GC

RY

2

CO

OL

ING

CIR

CU

LA

TO

R

Y1

HE

AT

ING

MO

DE

OP

TIO

NS

: RE

FE

R T

O

AU

XIL

IAR

Y C

ON

TA

CT

INF

OR

MA

TIO

NF

OR

W1

AN

D W

2

W1

W2

CR

Y2

Y1

DO

/BG

RY1W2W1FZFZ Y2 C

A3A2A1 LN

J5 J7

J4

YC

CH

ILLER

CO

NTA

CTS

CR

YG

THE

RM

OS

TAT

GC

RY

CO

OL

ING

CIR

CU

LA

TO

R

HE

AT

ING

MO

DE

OP

TIO

NS

: RE

FE

R T

O

AU

XIL

IAR

Y C

ON

TA

CT

INF

OR

MA

TIO

NF

OR

W1

AN

D W

2

W1

W2

CR

Y2

Y1

DO

/BG

RY1W2W1FZFZ Y2 C

A3A2A1 LN

J5 J7

J4

YC

CH

ILLER

CO

NTA

CTS

Chille

d w

ate

r C

ircula

tor

CR

YG

THE

RM

OS

TAT

GC

RY

HE

AT

ING

MO

DE

OP

TIO

NS

: RE

FE

R T

O

AU

XIL

IAR

Y C

ON

TA

CT

INF

OR

MA

TIO

NF

OR

W1

AN

D W

2

HE

-Z-L

V-Z

-Exte

nd

ed

-Wirin

g-P

g-2

-082615

HE

AT

PU

MP

C/W

CO

ND

EN

SE

R D

EF

RO

ST

CY

CL

E - B

OIL

ER

BA

CK

-UP

1 S

tag

e C

oo

ling

2 S

tag

e H

eatin

gH

eat p

um

p c

/w c

on

den

ser d

efro

st c

ycle

2 S

tag

e C

oo

ling

3 S

tag

e H

eatin

gH

eat p

um

p c

/w c

on

den

ser d

efro

st c

ycle

W1

W2

CR

Y2

Y1

DO

/BG

RY1W2W1FZFZ Y2 C

A3A2A1 LN

J5 J7

J4

AN

TI-IC

EC

ON

TR

OL

O/B

YR

CW

1

CO

ND

EN

SE

R

TT

DR

Y C

ON

TAC

TT

O B

OIL

ER

EX

TE

RN

AL

SP

DT

RE

LA

Y24 V

AC

CO

IL

EW

2C

RY

G

EW

2C

RY

GO

/B

THE

RM

OS

TAT

O/B

HE

AT

ING

MO

DE

: RE

FE

R T

O

AU

XIL

IAR

Y C

ON

TA

CT

INF

OR

MA

TIO

NF

OR

W1

AN

D W

2

W1

W2

CR

Y2

Y1

DO

/BG

RY1W2W1FZFZ Y2 C

A3A2A1 LN

J5 J7

J4

O/B

Y2

Y1

RC

W1

CO

ND

EN

SE

R

EW

2C

RY

2G

O/B

THE

RM

OS

TAT

Y1

AN

TI-IC

EC

ON

TR

OL

EW

2C

RY

2G

O/B

Y1

EX

TE

RN

AL

SP

DT

RE

LA

Y24 V

AC

CO

ILT

T

DR

Y C

ON

TAC

TT

O B

OIL

ER

HE

AT

ING

MO

DE

: RE

FE

R T

O

AU

XIL

IAR

Y C

ON

TA

CT

INF

OR

MA

TIO

NF

OR

W1

AN

D W

2



www.hi-velocity.com

Extended wiring diagrams for the various applications the LV-Z model can be used for. If you do not find the wiring configuration you require, please call the technical department at Energy Saving Products Ltd. for further assistance.

LV-Z Fan Coil - Extended Wiring Diagrams

-16-

HE

AT

PU

MP

C/W

CO

ND

EN

SE

R D

EF

RO

ST

CY

CL

EE

LE

CT

RIC

BA

CK

-UP

12

C 1 2SIN

GL

ES

TA

GE

C 1 2

TW

OS

TA

GE

C 1 2

SIN

GL

E S

TA

GE

EL

EC

TR

IC S

TR

IPIN

TE

RN

AL

24V

For

optio

nal e

nerg

y sa

vings

inst

all

a o

utd

oor

therm

ost

at to

lim

it th

e u

se o

f th

e s

econd s

tage

of th

e E

SH

. F

or

exa

mple

- 2

sta

gin

g the e

lect

ric

strip in

terr

upt “C

” and “

1”

or

“C”

and “

2”

with

a

outd

oor

stat as s

how

n b

elo

w. T

his

allo

ws

sin

gle

st

age o

f th

e tw

o b

anks

of th

e e

lect

ric

strip to

act

ivate

, th

e s

econd s

tage w

ill b

e a

llow

ed to

act

ivate

by

the o

utd

oor

stat.

OP

TIO

NA

L T

HR

OU

GH

OU

T D

OO

R T

HE

RM

OS

TA

TS

TA

GIN

G T

HE

15

-23

KW

UN

ITS

WIR

ING

FO

R E

LE

CT

RIC

AL

ST

RIP

HE

AT

ER

(E

SH

)

THE

RM

OS

TAT

WC

RY

G

WC

GR

Y

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

1 S

tag

e H

eati

ng

21

EL

EC

TR

IC S

TR

IPC

ON

TA

CT

S 2

4V

AC

HE

-Z-L

V-Z

-Exte

nd

ed

-Wir

ing

-Pg

-3-0

82615

2 S

tag

e C

oo

lin

g 3

Sta

ge H

eati

ng

(E

lectr

ic)

Heat

pu

mp

c/w

co

nd

en

ser

defr

ost

cycle

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

C RiRo

H1J9

OP

TIO

NA

L

15-2

3 K

W U

NIT

ST

HR

OU

GH

TH

ER

MO

STA

T

STA

GIN

G T

HE

EL

EC

TR

IC S

TR

IP2

4V

TE

RM

INA

LS

TW

OS

TA

GE

C 1 2

12

O/B

Y2

Y1

RC

W1

CO

ND

EN

SE

R

EW

2C

RY

2G

O/B

THE

RM

OS

TAT

Y1

AN

TI-

ICE

CO

NT

RO

L

EW

2C

RY

2G

O/B

Y1

SE

T A

UX

ILIA

RY

TIM

ER

TO

TH

E “

OF

F”

PO

SIT

ION

C

W1

W2

CR

Y2

Y1

DO

/BG

R Y1 W2 W1 FZ FZY2C

A3 A2 A1L N

J5J7

J4

OP

TIO

NA

L

15-2

3 K

W U

NIT

ST

HR

OU

GH

TH

ER

MO

STA

T

STA

GIN

G T

HE

AN

TI-

ICE

CO

NT

RO

L

O/B

YR

CW

1

CO

ND

EN

SE

R

THE

RM

OS

TAT

EL

EC

TR

IC S

TR

IP2

4V

TE

RM

INA

LS

TW

OS

TA

GE

C 1 2

12

C RiRo

H1J9

O/B

YR

GC

W2

E

1 S

tag

e C

oo

lin

g 2

Sta

ge H

eati

ng

(E

lectr

ic)

Heat

pu

mp

c/w

co

nd

en

ser

defr

ost

cycle

SE

T A

UX

ILIA

RY

TIM

ER

TO

TH

E “

OF

F”

PO

SIT

ION

C



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-17-


CFW300 WEG Alarms/Faults and Possible Causes (Brackets = CFW10) This section assists the user to identify and correct possible alarms/faults that can occur during the WEG operation. When an alarm is detected, the drive continues to operate and an alarm code is displayed in the form AXXX to warn the user of critical operation conditions. When a fault is detected, the inverter is disabled and the fault code is displayed in the form FXXX (CFW10 = EXX). To restart the inverter after an alarm/fault has occurred, the drive must be reset.

To reset WEG drive: Disconnect and reapply the AC power (power-on reset)

Diagnostics and Troubleshooting

ALARM CODE DESCRIPTION POSSIBLE CAUSESA046Motor Overload Motor overload alarm

u Settings of P156 is too low for the used motoru Overload on the motor shaft

A050Power Module Overtemperature

Overtemperature alarm from the power module temperature sensor [NTC]

u High temperature at IGBTs: P030 > 90 °C [> 194 °F]u High ambient temperature around the inverter > 50 °C [> 122 °F] and high output currentu Blocked or defective fanu Heatsink is too dirty, preventing the air flow

A090External Alarm

External alarm via DIx [option “noexternal alarm” in P263 to P270] u Wiring on DI1 to DI8 inputs are open or have poor contact

A700Remote HMI Communication

No communication with remote HMI,but there is frequency command orreference for this source

u Check if the communication interface with the HMI is properly configured in parameter P312u HMI cable disconnected

FAULT CODE DESCRIPTION POSSIBLE CAUSES

F021 (E02)Undervoltage on the DC Link

Undervoltage fault on the intermediatecircuit

u Wrong voltage supply; check if the data on the inverter label comply with the power supply and parameter P296u Supply voltage too low, producing voltage on the DC link below the minimum value - P004 Ud < 250 Vdc in 110 / 127 Vac - P296 = 1, or Ud < 200 Vdc in 200 / 240 Vac - P296 = 2u Phase fault in the inputu Fault in the pre-charge circuit

F022 (E01)Overvoltage on the DC Link

Overvoltage fault on the intermediatecircuit

u Wrong voltage supply; check if the data on the inverter label comply with the power supply and parameter P296u Supply voltage is too high, producing voltage on the DC link above the maximum value - P004 Ud > 460 Vdc in 110 / 127 Vac - P296 = 1, or Ud > 410 Vdc in 200 / 240 Vac - P296 = 2u Load inertia is too high or deceleration ramp is too fastu P151 setting is too high

F031Fault in Communication with IOs Expansion Accessory

Main control cannot establish the communication link with the IOsexpansion accessory

u Accessory damagedu Poor connection of the accessoryu Problem in the identification of the accessory; refer to P027

F032Fault in Communication with IOs Communication Accessory

Main control cannot establish the communication link with thecommunication acccessory

u Accessory damagedu Poor connection of the accessoryu Problem in the identification of the accessory; refer to P028

F051 (E04)IGBTs Overtemperatures

Overtemperature fault measured on the temperature sensor of the power pack

u High temperature at IGBTs: P030 (P008) > 100 °C [> 212 °F]u High ambient temperature around the inverter >50 °C [>122 °F] and high output currentu Blocked or defective fanu Heatsink is too dirty, preventing the air flow

F070 (E00)Overcurrent/Short-circuit

Overcurrent or short-circuit on the output, DC link or braking resistor

u Short-circuit between two motor phasesu IGBTs module in short-circuit or damagedu Start with too short acceleration rampu Start with motor spinning without the Flying Start function

F072 (E05)Motor Overload Motor overload fault [60 s in 1.5 x Inom]

u P156 setting is too low in relation to the motor operating currentu Overload on the motor shaft

F080 (E08)CPU Fault (Watchdog)

Fault related to the supervision algorithm of the inverter main CPU

u Electric noiseu Inverter firmware fault

F081End of User’s Memory

Fault of end of memory to save user’s parameter table

u Attempt to save [P204 = 9] more than 32 parameters [with values different from the factory default] on the User parameter table

F082Fault in the Copy Function (MMF) Fault in the copy of parameters

u Attempt to copy the parameters from the flash memory module to the inverter with different software versions

F084Auto-diagnosis Fault

Fault related to the automaticidentification algorithm of the inverter hardware

u Poor contact in the connection between the main control and the power packu Hardware not compatible with the firmware versionu Defect on the internal circuits of the inverter

F091 (E06)External Fault

External fault via DIx [“no external fault” in P263 to P270] u Wiring on DI1 to DI8 inputs are open or have poor contact

F701Remote HMICommunication Fault

No communication with the remote HMI; however, there is command orfrequency reference for this source

u Check that the HMI communication interface is properly configured in parameter P312u HMI cable disconnected

(E09)Program Memory Error (Checksum)

Contact Energy Saving Products 1-888-652-2219 u Memory with corrupted values.

(E24)Programming error

It is automatically reset when the incompatible parameters are changed u Incompatible parameters were programmed.

(E31)Keypad (HMI) Connection Fault

Contact Energy Saving Products 1-888-652-2219

u Inverter control circuit is defective.u Electrical noise in the installation (electromagnetic interference).

(E41)Self-Diagnosis Fault

Contact Energy Saving Products 1-888-652-2219 u Inverter power circuit is defective.


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*To adjust the remaining T-Stat settings: - Jumper between R & the desired T-Stat setting - Adjust the corresponding trimpot to the desired airflow using the method described in the System Commissioning and Set-Up.

N

Fig. 003

Fig. 004

Fig. 005

Fig. 006

Ensure Transformer is connected properly

Inspect Supply VoltageSupply Power present?

Verify that 24VAC is present between C & desired T-Stat setting

Input Voltage and T’Stat function on PSB is functioning correctly

Verify that Pressure Sensing section of PSB is functioning

within proper operating range

Blue Light present on PSB Circuit Board?

Voltage present? (0-10VDC)

VDC < 9VDC

Read and record Volts DC Value

Adjust trimpot 1/2 turn Counter-Clockwise

Read and record Volts DC value to confirm adjustment

VDC changed?

PSB Circuit Board is functioning correctly

Adjust trimpots on PSB Circuit Board until airflow is

running at desired speed*See System Commissioning

Report and Set-Up

Ensure that Jumper is installed correctly

(Fig. 002)

Turn appropriatePSB trimpot

1/2 turn Counter-Clockwise, wait 30-45 seconds for

drive to adjust - Return to Step 9

Ensure that Volt Meter is set to read Volts DC. Test Voltage on

opposite end of cable(Fig. 006)

Decrease PSB trimpot of jumpered tstat setting 1/2 turn Counter-Clockwise -

Wait 30 seconds for drive to adjust

(Fig. 007)

Adjust trimpot 1/2 turn Counter-Clockwise,

wait 30 seconds - VDC changed?

Return to Step 4

Replace Transformer

Turn off Supply Power, connect Transformer, turn on

Power - Return to Step 5

Call Technical Support Toll Free 1-888-652-2219

Install Jumper and return to Step 6

Voltage present?

Continue adjustments until VDC < 9VDC

(Again) Adjust 1/2 turn Counter-Clockwise,

wait 30 seconds - VDC changed?

Return to Step 15

Return to Step 13

Change PSB Circuit Board

Return to Step 11


10

9

8

7

6

5

4

Verify that Main Supply Voltage ispresent on the PSB circuit boardbetween the L and N terminals

(Fig. 003)

3

Power Fan Coil2

11

17

16

15

14

13

18

N

Y

Y

Y

Y

N

N

N

N

N

N

12

Y

Y

Y

N

Y

Y

N

N

Y

N

Y

Verify that 24VAC is present between R & C on

the PSB circuit board(Fig. 004)

Return to Step 12

Y

Cooling(Y2 terminal)

Heating (W2 terminal)

Recirc Fan(G terminal)

Fig. 007

Fig. 002Fig. 001

Troubleshooting - Motor Running Too Fast

1Jumper desired Tstat setting with

R on the PSB circuit board(Figs. 001-002)

Verify that Pressure Sensing section of PSB is functioning properly by measuring Voltage Output

(Volts DC) @ the WEG controller, Terminals 7 & 8 (Fig. 005)

Start

-18-



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Start

Fig. 008

Fig. 003

Fig. 006

Fig. 005

Use Clamp on Amp Meter to test Amperage of input power

supply to the fan coil.(Fig. 008)

PSB Circuit Board & WEG Drive functioning correctly

Motor running?

Motor working correctly

Call Technical Support @ 1-888-652-2219.

PSB circuit board isworking correctly -

Replace WEG controller

17

16

15

14

18

Y

N

Y

N


Amperage > 2A (1 amp @ 220-240 volt AC)

Voltage Present? (0-10VDC)

VDC > 9VDC

PSB Circuit Board is Functioning Correctly

Increase appropriate PSB trimpot 1/2 turn Clockwise -

Wait 30 seconds for motor to adjust

Voltage present?

Continue to Step 11

1

10

12

Y

Y

N

N11

Ensure Transformer is connected properly

Inspect Supply Voltage - Return to Step 5Supply Power Present?


the PSB circuit board(Fig. 005)



(Fig. 001)

Replace Transformer

Turn off Supply Power, connect transformer, turn on power -

Return to Step 6



9

8

7

6

5

Verify that Main Supply Voltage ispresent on the PSB circuit boardbetween the L and N terminals

(Fig. 004)

4

Power Fan Coil3

N

N

N

Y

Y

Y

N

Y

N

N

Y

Unplug Motor Leads and test resistance (ohms)

between Windings(Figs. 002 & 003)

Jumper desired Tstat setting with R on the PSB Circuit Board

(Fig. 001)

Verify that Pressure Sensing section of PSB is functioning properly by measuring Voltage Output

(Volts DC) @ the WEG controller, terminals 7 & 8 (Fig. 006)

2

Y


XIf Resistance is outside of the

acceptable range (6.5 - 10.5 ohms) or uneven

across any winding legs, call Technical Support

Toll Free @ 1-888-652-2219 -If Resistance is acceptable,

re-connect Motor Leads and continue to Step 3

Adjust Trimpots on PSB Circuit Board until airflow is


and Set-Up.

Continue adjustments until VDC > 9VDC - Return to Step 12.

Resistance should be equalbetween all Windings. Black to Red, Black to White and Red to White. Resistance should be:

6.5 - 10.5 ohms

Troubleshooting - Motor Running Too Slow

Fig. 002Fig. 001

Input Voltage and T’Stat section on PSB is functioning correctly

Ensure that Volt Meter is set to read Volts DC - Test

Voltage on opposite end of Cable (Fig. 007)

Fig. 007

Fig. 004

-19-



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Start

Ensure that Volt Meter is set to read Volts DC - Test

Voltage on opposite end of Cable (Fig. 007)

Continue to Step 11


1

10

12

Y

Y

N

N11

Ensure Transformer is properly connected

Inspect Supply Voltage - Return to Step 5Supply Power Present?


the PSB Circuit Board(Fig. 005)



(Fig. 001)

Replace Transformer

Turn off Supply Power, connect Transformer, turn on Power.

Return to Step 6



9

8

7

6

5

Verify that Main Supply Voltage ispresent on the PSB Circuit Boardbetween the L and N Terminals

(Fig. 004)

4

Power fan coil3

N

N

N

Y

Y

Y

N

Y

N

N

Y

Unplug Motor Leads and test resistance (ohms)

between windings(Figs. 002 & 003)

Jumper desired Tstat setting with R on the PSB Circuit Board

(Fig. 001)

2

Y

Fan running? N

Y

13Ensure Red Plug on PSB Circuit Board is properly connected

(Fig. 008)

Fan Running?

Adjust Trimpots on PSB circuit board until airflow is


and Set-Up.

Y

N


14

X

Voltage Present?

Fig. 006

Fig. 004

Fig. 005

Troubleshooting - Motor Not Running

Fig. 007 Fig. 008

Input Voltage and T’Stat section on PSB is functioning correctly

VDC > 9VDC

PSB Circuit Board is Functioning Correctly

Verify that Pressure Sensing Section of PSB is functioning properly by measuring voltage output

(Volts DC) @ the WEG controller, terminals 7 & 8 (Fig. 006)

Fig. 003Fig. 002

If Resistance is outside of the acceptable range

(6.5 - 10.5 ohms) or uneven across any winding legs, call Technical Support

Toll Free @ 1-888-652-2219 -If Resistance is acceptable,

re-connect Motor Leads and continue to Step 3

Resistance should be equalbetween all Windings. Black to Red, Black to White and Red to White. Resistance should be:

6.5 - 10.5 ohms

Increase appropriate PSB trimpot 1/2 turn Clockwise -

Wait 30 seconds for motor to adjust

Continue adjustments until VDC > 9VDC - Return to Step 12.

Voltage Present? (0-10VDC)

Fig. 001

-20-



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Check Transformer Plugs

Connected?Verify 24v power

between R & C

Y

Connect Line Voltage plug and

return to start

Check that Line Voltage wiring from breaker is proper

N Line Voltage plug connected?

Y

Y

N

N

Return to Start

Signal from Thermostat? (Check across Y1/Y2 & C or W1/W2 & C)

N Connect Transformer Plugs and

return to start

Y

NSet Thermostat

Temperature and Switch for Constant Fan,

Heating or Cooling

N

Fan running?N

Finished

YFan running?

YY

YY

Check for Continuity through Thermostat

N

Replace Thermostat

N

N

Finished

Replace 24v Transformer

Disconnect 24v Transformer plug with two Red Wires from middle of

Circuit Board and check for 24v from Transformer

N

Is T’Stat set for Constant Fan, Cooling or Heating?

Check Resettable Fuse (F1) for heat - Caution: Extremely

hot if tripped

Check for broken or incorrect wiring between

Thermostat and Board

Check 24v Wiring for a dead short and for possible second 24v source being input into the Circuit Board i.e. Y1 or

Y2 & C on 24v Output Terminals.

YFix or replace Wiring

Verify Line Voltage power between L and N

Troubleshooting - 24Volt Thermostat to PSB Circuit Board

Start

Refer to Trouble Shooting - Motor

Not Running

Refer to Trouble Shooting - Motor

Not Running

-21-



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N

Check ThermostatStart Thermostat

Cooling Call

Trouble Shooting: Heating 24 Volt Circuit Board

N

Y

Verify 24v Power between G & C

Verify 24v Power between Y1/Y2 & C

Y

Fan Running?

Check Thermostat time delay for Y1/Y2

Refer to Troubleshooting - Motor

Not Running

Freeze Stat tripped or not connected

Y

N

Start Thermostat Heating Call

Verify 24v Power between W1/W2 & C

Y

Verify 24v Power between W2 & C on 24v OutputTerminals

Auxiliary Relay Activated

Y1 & C Y2 & C

W1 & C W2 & C

Y1 for Multi Staging units only, Y1

controls Blower Only, if Single Stage

Cooling, use Y2

Verify 24v Power between X1 & C

Verify 24v Power between Y2 & C on 24v Output Terminals

Fan Running?

Check Thermostat

Refer to Troubleshooting - Motor

Not Running

W1 for Multi Staging units only, W1 controls

blower and Auxiliary relay - If Single Stage

Heating use W2

Y

N

N

N

N

N

Y

Y

N

N

Troubleshooting - Cooling 24 Volt Circuit Board


-22-



www.hi-velocity.com

Y

Start

Is Contactorpulled in?

Freeze Stat opened?

24v across X1 & X2 at the

Fan Coil?

Y230v into

Contactor?

Supply 230v Power to Condensor

N

Y

230v out ofContactor?

Check Compressor

Y

NReplace Contactor

N

Check for 24v across Contactor Coil

24v across X1 & C

at the Fan Coil?

Y

N

Allow System

to settle and Freeze Stat

to open

Y

N

Check for openSafety Controls

on Outdoor UnitEnsure System is properly

Charged and Airflow is correct

Refer to Troubleshooting - 24v

N

Y Ensure System is Properly Charged and Airflow is correct

N

Y

N

Check for improper Wiring or Damage between Indoor and

Outdoor Units

Replace Wiring

Y

Replace Freeze Stat

Y

Troubleshooting - Outdoor Unit - Electrical

-23-



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Start

Fan running?

Y


Verify that 24v power is present between C and Y2 terminals

Refer toTroubleshooting - Motor

Not Running to ensure fan is working properly

Check that TX Valve setting and Charge is proper

TX and Charge good?

Refer to Charging on page 33

Confirm the Line Sizes are correct

Confirm that the Unit is Properly Sized

Confirm that all Piping is done

properly

Check that the TX Valve Bulb

is installed correctly

Is Freeze Stat

working properly?

Replace Freeze StatConfirm that other Safety Controls are

working properly


N

N

Y

Y

Y

N

N

Troubleshooting - Short Cycling

-24-



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-25-


LV-Z Series Specifications Low Velocity Fan Coil w/ VFD

Matching CoilsRefrigerant Coils

RBM/RPM-E/RCM-70Chilled Water Coils

WBM/WCM-70/1050, 100/1050WM-1750

Hot Water CoilsHWC-70/1050, 1750

Electrical CoilsESH-750 (5-18 kW)

LV-Z-1050 LV-Z-1750Hot Water Heating(1) 1.5 Ton Airflow(5.3 kW)

2 Ton Airflow(7.0 kW)

2.5 Ton Airflow(8.8 kW)


3.5 Ton Airflow(12.30 kW)



Coil HWC-70/1050 HWC-70/1050 HWC-70/1050(2) HWC-70/1050(2) HWC-1750 HWC-1750 HWC-1750Coil Type 6 Row/10 FPI 6 Row/10 FPI 6 Row/10 FPI 6 Row/10 FPI 6 Row/10 FPI 6 Row/10 FPI 6 Row/10 FPIMax. BTUH @ 190°F E.W.T. (kW @ 88°C) 50,100 (14.67 kW) 63,200 (18.51 kW) 75,200 (22.02 kW) 86,000 (25.18 kW) 112,800 (33.03 kW) 125,500 (36.75 kW) 149,200 (43.69 kW)Max. BTUH @ 180°F E.W.T. (kW @ 82°C) 45,900 (13.44 kW) 58,000 (16.98 kW) 69,000 (20.20 kW) 78,900 (23.10 kW) 103,400 (30.28 kW) 115,100 (33.70 kW) 136,800 (40.06 kW)Max. BTUH @ 170°F E.W.T. (kW @ 77°C) 41,800 (12.24 kW) 52,800 (15.46 kW) 62,700 (18.36 kW) 71,700 (20.99 kW) 94,200 (27.58 kW) 104,700 (30.66 kW) 124,400 (36.43 kW)Max. BTUH @ 160°F E.W.T. (kW @ 71°C) 37,700 (11.04 kW) 47,500 (13.91 kW) 56,500 (16.54 kW) 64,600 (18.92 kW) 84,800 (24.83 kW) 94,300 (27.61 kW) 112,100 (32.82 kW)Max. BTUH @ 150°F E.W.T. (kW @ 66°C) 33,600 (9.84 kW) 42,300 (12.39 kW) 50,300 (14.73 kW) 57,400 (16.81 kW) 75,500 (22.11 kW) 83,900 (24.57 kW) 99,700 (29.19 kW)Max. BTUH @ 140°F E.W.T. (kW @ 60°C) 29,400 (8.61 kW) 37,000 (10.83 kW) 43,900 (12.85 kW) 50,100 (14.67 kW) 66,100 (19.35 kW) 73,400 (21.49 kW) 87,000 (25.47 kW)Max. BTUH @ 130°F E.W.T. (kW @ 54°C) 25,200 (7.38 kW) 31,700 (9.28 kW) 37,500 (10.98 kW) 42,700 (12.50 kW) 56,600 (16.57 kW) 62,800 (18.39 kW) 74,400 (21.79 kW)Max. BTUH @ 120°F E.W.T. (kW @ 49°C) 21,100 (6.18 kW) 26,500 (7.76 kW) 31,500 (9.22 kW) 35,900 (10.51 kW) 47,400 (13.88 kW) 52,600 (15.40 kW) 62,300 (18.24 kW)Max. BTUH @ 110°F E.W.T. (kW @ 43°C) 17,100 (5.01 kW) 21,400 (6.27 kW) 25,500 (7.47 kW) 29,100 (8.52 kW) 38,300 (11.21 kW) 42,600 (12.47 kW) 50,500 (14.79 kW)

GPM Flow ratings (L/s Flow Ratings) 5 (0.32 L/s) 5 (0.32 L/s) 5 (0.32 L/s) 5 (0.32 L/s) 10 (0.63 L/s) 10 (0.63 L/s) 10 (0.63 L/s)Pressure Drop in FT. H2O (Drop in KPa) 3.9 (11.66 KPa) 3.9 (11.66 KPa) 3.9 (11.66 KPa) 3.9 (11.66 KPa) 3.1 (9.27 KPa) 3.1 (9.27 KPa) 3.1 (9.27 KPa)

Chilled Water Cooling(1) WBM/WCM-70/1050 WBM/WCM-100/1050 WM-1750Coil Type 70/1050 70/1050 100/1050(3) 100/1050(3) 1750 1750 1750

E.W.T.Max. BTUH @ 48°F E.W.T. (kW @ 8.9°C) 20,200 (5.91 kW) 23,800 (6.97 kW) 31,500 (9.22 kW) 34,900 (10.22 kW) 46,700 (13.67 kW) 50,400 (14.76 kW) 56,200 (16.46 kW)Max. BTUH @ 46°F E.W.T. (kW @ 7.8°C) 22,000 (6.44 kW) 25,800 (7.55 kW) 34,200 (10.01 kW) 37,900 (11.10 kW) 50,700 (14.85 kW) 54,600 (15.99 kW) 60,900 (17.83 kW)Max. BTUH @ 44°F E.W.T. (kW @ 6.7°C) 23,700 (6.94 kW) 27,800 (8.14 kW) 37,000 (10.83 kW) 40,800 (11.95 kW) 55,000 (16.10 kW) 58,800 (17.22 kW) 65,500 (19.18 kW)Max. BTUH @ 42°F E.W.T. (kW @ 5.6°C) 25,400 (7.44 kW) 29,900 (8.76 kW) 39,600 (11.60 kW) 43,800 (12.83 kW) 58,300 (17.07 kW) 62,900 (18.42 kW) 70,000 (20.50 kW)Max. BTUH @ 40°F E.W.T. (kW @ 4.4°C) 27,000 (7.91 kW) 31,800 (9.31 kW) 42,200 (12.36 kW) 46,600 (13.64 kW) 62,100 (18.18 kW) 66,900 (19.59 kW) 74,500 (21.81 kW)

S.H.R.Max. BTUH @ 48°F E.W.T. (kW @ 8.9°C) 69% 72% 71% 73% 69% 71% 74%Max. BTUH @ 46°F E.W.T. (kW @ 7.8°C) 67% 70% 68% 70% 67% 68% 71%Max. BTUH @ 44°F E.W.T. (kW @ 6.7°C) 65% 67% 66% 68% 65% 66% 69%Max. BTUH @ 42°F E.W.T. (kW @ 5.6°C) 63% 66% 65% 66% 64% 65% 67%Max. BTUH @ 40°F E.W.T. (kW @ 4.4°C) 62% 64% 63% 65% 62% 63% 65%

GPM Flow ratings (L/s Flow Ratings) 5 (0.32 L/s) 5 (0.32 L/s) 7 (0.44 L/s) 7 (0.44 L/s) 10 (0.63 L/s) 10 (0.63 L/s) 10 (0.63 L/s)Pressure Drop in FT. H2O (Drop in KPa) 4.5 (13.45 KPa) 4.5 (13.45 KPa) 4.5 (13.45 KPa) 4.5 (13.45 KPa) 3.6 (10.76 KPa) 3.6 (10.76 KPa) 3.6 (10.76 KPa)

(2) (2) WCM-100 will provide approximately the same heating capacities.WCM-100 will provide approximately the same heating capacities.(3) (3) Use a full transition when using the WCM-100 to ensure even airflow across the coil. Use a full transition when using the WCM-100 to ensure even airflow across the coil. The WCM-70 is not to be used at these airflow rates. The WCM-70 is not to be used at these airflow rates.

Electrical Heating ESH/VESH-750 N/AKilowatt Range 10 - 18 kW / 5 - 18 kW N/A

Fan Coil Specifications LV-Z-1050 LV-Z-1750Max Rated CFM @ 1" E.S.P. (L/s @ 249 Pa) 1200 (566 L/s) 1750 (826 L/s)Voltage 115/230/1/50/60 F .L .A. 8 amp 115/230/1/50/60 F .L .A. 8 ampNominal Operating Amperage 6 Amps 8 AmpsIntegral Surge and Fuse System Yes YesHorse Power/Watts 1/3hp - 515W 3/4hp - 695WMotor RPM Variable VariableSupply Air Size 18” X 171⁄4” (457mm X 438mm) 22 1⁄2” X 22 1⁄2” (572mm X 572mm)Return Size Needed 182 in2 (0.12m2) 240 in2 (0.12m2)Shipping Weight (no coil) 95 lbs (43 kg) 125 lbs (43 kg)

Fan Coil SizeLengthWidth

Height

32 5⁄16” (821mm)19 1⁄2” (495mm)18 1⁄4” (464mm)

38 3⁄4” (984mm)26 3⁄4” (679mm)24 1⁄4” (616mm)

(1) (1) HeatingHeating specs are rated at 68 specs are rated at 68°F E.A.T., Cooling specs are rated at 80/67°F dB/wB. F.L.A. - Full-Load AmperageRPM - Revolutions per MinuteE.S.P. - External Static PressureE.A.T. - Entering Air TemperaturedB/wB - Dry Bulb/Wet Bulb

BTUH - British Thermal Units per HourE.W.T. - Entering Water TemperatureSHR - Sensible Heat RatioGPM - US Gallons per MinuteL/s - Litres per SecondCFM - Cubic Feet per Minute

Refrigerant Cooling(1) RBM/RPM-E/RCM-70/3rd Party N/A (3rd Party Only)RBM/RPM-E/RCM Modules

BTUH Refrigerant TX Cooling 1.5 - 3.0 Tons (5.3-10.6 kW) 36,000-60,000 BTUH (10.5-17.59 kW)


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Module LVZLV-Z Series Fan Coil Installation (26/28)Quick Sizing Guide

ALL UNITS

Hi-Velocity Fan Coils A B CHE-Z/HE-B/HE/HV-50/51 32 5⁄16” (821mm) 14 1⁄2” (368mm) 18 1⁄4” (464mm)HE-Z/HE-B/HE/HV-70/71 32 5⁄16” (821mm) 19 1⁄2” (495mm) 18 1⁄4” (464mm)HE-Z/HE-B/HE-P/HE/HV-100/101 32 5⁄16” (821mm) 25 1⁄2” (648mm) 18 1⁄4”

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