installation, operation and maintenance instructions · safety considerations hazards may exist...

Installation, Operation andMaintenance Instructions

HRV650 • HRV700 • HRV1150

HRV1150

- 2 -

Table of Contents

Safety Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

InstallationInspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mounting Location Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Mounting Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Internal Grilles and Diffusers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Drains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Electrical Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ControlsGeneral Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Frost Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Remote Wall Control (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Airflow Measurement and BalancingFlow Station Positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Balancing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

System ServiceBi-Monthly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Appendix A: Mounting Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Appendix B: Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Appendix C: Flow Station Positions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Appendix D: Drain Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Appendix E: Terminal Control Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Appendix F: Electrical Connection Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Appendix G: Make-up Heat Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Appendix H: Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Manufacturer reserves the right to discontinue or change specifications or designs without notice or obligation.

Safety ConsiderationsHazards may exist within this equipment because it

contains electrical and powerful moving components.

Only qualified service personnel should install or service

this equipment. Untrained personnel can perform basic

maintenance such as maintaining filters. Observe pre-

cautions marked in the literature and on labels attached

to the unit. Follow all safety codes.

Installation

InspectionInspect the exterior of the unit for shipping damage by

ensuring that there is no damage to the door, door latches,

door hinges, damper, duct collars, cabinet, etc. Inspect the

interior of the unit for damage by ensuring that the fan

motors and housings, heat exchanger, insulation,

dampers, actuators and drain pans are all intact.

If transportation damage is found, file a claim immediately

with the transportation agency. Remove all packaging, tape,

etc. from the cabinet.

Mounting Location RequirementsWhen determining an installation location, the unit must

be mounted in a heated area to prevent condensate drain

lines from freezing. The mounting location should be

away from occupied areas to provide quiet operation. The

area should also be easily accessible for maintenance.

NOTE: These Heat Recovery Ventilators have minimum

clearance requirements when mounting. See

Appendix B for specific clearance requirements.

Mounting options must allow 6" [152mm] clear-

ance in front of control cover for access.

A mounting location close to an exterior partition will

minimize the length of insulated duct. The unit should be

close to a drain and 120 volt, 60 Hz power supply. The

unit should be mounted away from hot chimneys, electri-

cal panels and other hazards. The area should also be

easily accessible for maintenance.

Mounting OptionsThere are several options for hanging or floor mounting

the unit.

NOTE: In all cases, the unit must be level. Consult local

building code for restrictions in your area regard-

ing installation.

Hang the unit with the reinforced rubber straps provid-

ed as shown in Appendix A. Check with local building

codes regarding the use of rubber straps in commercial

buildings. Attach the straps to the unit with two #8 screws

provided. Then attach the other end of the strap to the

ceiling joists, trusses, custom frame, etc.

The unit can also be hung with 3/8" [10mm] threaded

rod and U channels or angles (not supplied) as shown in

Appendix A.

When installing the unit, keep in mind that access to the

control panel may be required. Supply and exhaust ducts

to outside may have 1" to 2" [25 to 51mm] of insulation on

them. Rubber vibration isolation may be required and is

recommended for quiet operation.

The unit can also be mounted on a metal or wooden

curb (not supplied) bolted to the floor as shown in

Appendix A. Space must be left under the unit to allow

connection of drain lines. A gradual slope is required

for the condensate water to drain by gravity (minimum

1/4"/foot) [6mm/305mm]. If this is not possible, a pump

should be used. If attachment of the unit to the curb

is required, ensure that screws, bolts and mounting

hardware do not interfere with moving parts or that the

integrity of the cabinet insulation is not affected.

DuctworkThe supply and exhaust duct connections on the unit

are as follows:

NOTE: Duct sizes are for connection purposes only.

Ducts should be sized to keep noise and pressure

drop to a minimum.

The supply and exhaust ducts connected to outside, as

well as any ducts passing through an unconditioned

space, must have a minimum insulation value of R5. In

addition, a continuous integral vapor barrier over the duct

insulation must be used.

Air balancing dampers are recommended for both sup-

ply and exhaust ducts to allow for adjustment of airflow.

Also, flexible canvas connectors should be installed close

to the unit in the supply duct to the building and the

exhaust duct from the building to reduce noise transmis-

sion from the unit to the building (see Appendix C).

All ports on the 600 cfm and 1200 cfm units have 1"

[25mm] flanges to facilitate the installation of the duct-

work. Please note that the "Fresh Air from Outside" port

has a frost control damper incorporated with it. Ensure

that any mechanical fasteners used to connect the duct

do not interfere with the operation of the damper. Screws

can be installed on the side of the cabinet rather than

the flange for this port only. For port locations see

Appendix B.

All ports on the 700 cfm unit have 2" [51mm] flanges to

facilitate the installation of the ductwork. Please note the

"Fresh Air From Outside" connection is factory set to be

the left side upper port. It is possible to reverse the opera-

tion of the frost control damper in order to use the port on

top of the cabinet for "Fresh Air From Outside" connection.

UNIT DUCT SIZE

600 cfm or 700 cfm 14" x 8" [356 x 203mm]

1150 cfm 20" x 8" [508 x 203mm]

WARNINGDisconnect the main power switch to the unit before

performing service or maintenance. Electric shock can

cause personal injury.

- 3 -

To change the "Fresh Air From Outside" from the side

to the top use the following directions. For port locations

see Appendix B.

Remove the cover of the damper motor with a flat screw

driver. Reverse the Orange and Red wires by moving the

Orange from terminal #2 to terminal #3 and moving the

Red wire from terminal #3 to terminal #2. The end result,

in order to have the "Fresh Air From Outside" connection

to the top port, will be; #1 - White, #2 - Red, #3 - Orange.

Internal Grilles and DiffusersLocate exhaust grilles and supply diffusers to provide

effective ventilation and avoid short circuiting of airflows.

Adjustable dampers should be provided at every grille

and diffuser location to make balancing of the system

possible.

A proper selection of style and size of grilles and dif-

fusers is required to minimize pressure drop. The velocity

of the airflow should not exceed 400 ft/min [2 m/sec] for

normal applications.

The duct system should be designed according to the

high speed flow rate of the unit. In order to keep the noise

and pressure drop to a minimum, a maximum air velocity

of 1100 ft/min [5.6 m/sec] should be used in calculations

in duct design. The duct runs should be kept as short as

possible with the minimum amount of elbows and transi-

tions. The manufacturer recommends the use of smooth

radius elbows or square elbows with turning vanes to

achieve maximum performance.

DrainsThe drain fittings provided with the unit will accept a

3/4" [19mm] NPT coupler (supplied by others). The drain

line for the unit must be fabricated on-site and connected

to the building main. A loop in the hose or trap in the cop-

per or plastic pipe must be provided to prevent sewer

gases from entering the unit when connecting to a drain

as illustrated in Appendix D.

NOTE: Consult local building code for plumbing require-

ments in your area. If copper pipe is to be used,

ensure not to solder to the 3/4" [19mm] coupler

while it is attached to the plastic drain fitting as

deformation may occur. Ensure adequate slope is

present to allow good drainage (minimum 1/4"/foot

or 6mm/305mm).

Electrical Connections

Power

A terminal block and strain relief bushing or a junction

box is provided for line voltage to make the necessary

power connections.

The electrical requirements are as follows:

Control Box Access For Low Speed Setting

(600 cfm/1150 cfm only)Disconnect power to the unit. Remove the four screws

securing the cover plate as shown in Appendix F. Lift off

the control cover plate and switch the red wire as shown

in Appendix F.

Controls

General Information

Fan Interlock Switch (FF)External fan control can be achieved by connecting an

external fan source (G) through dry contacts (FF). These

contacts are closed on a call for ventilation or frost control.

Speed Selection (600 cfm/1150 cfm only)There are three speed settings available with the con-

trols, only two of which can be functional at any one time.

The units are factory set to use the low and high speed

taps on the blower motors. If necessary, the medium

speed tap can be used instead of the low speed tap. See

Appendix F for instructions on how to make this change.

Units without the remote wall control option can be shut

off by opening the contact between LOW - COM or HIGH

- COM as shown in Appendix E-2.

Sequence of OperationBefore start-up, check the unit for obstructive packaging,

objects near or in blowers, dampers, heat exchangers, etc.

Once installation is complete, check all modes of operation

to ensure that the unit is working properly. Close the doors

and check for operation on LOW, COM and HIGH. Use a

wall control or the dry contact switching to run fan speeds

as shown in Appendix E-2.

The 700 cfm unit is two speed. Low speed can be initi-

ated by creating a closure across LOW - COM or high

speed can be initiated by creating a closure across HIGH

- COM.

VOLTAGE 120V 120V 120V

MCA 8.6 5.6 13.3

MOP 12 8 15

600 cfm 700 cfm 1150 cfm

- 4 -

- 5 -

Unit Check Points:

___ Power connected, no ventilation call - Both fans are

off, frost control damper (if equipped) closes off

fresh air from outside.

___ Power connected, low speed call - Both fans on low

speed, internal frost control damper (if equipped)

opens fresh air from outside. If equipped with recir-

culation module, the internal frost control damper

closes recirculation opening.

___ Power connected, high speed call - Both fans on

high speed, frost control damper opens fresh air

from outside. If equipped with recirculation module,

the internal frost control damper closes recirculation

opening.

___ Power connected, occupied timer/sensor connec-

tion open (unoccupied mode) - Both fans are off,

frost control damper closes fresh air from outside. If

equipped with recirculation module, the internal frost

control damper opens recirculation opening.

___ Power connected, FF control contacts close during

unit ventilation or frost control cycle.

Frost ControlThe unit functions are controlled by integrated controls

in the unit which may include Exhaust Only Defrost or

Recirculation Defrost (via the recirculation module - 600

cfm and 1200 cfm units only). In cold temperatures, frost

control cycles will remove frost from the heat exchanger

to maintain good operation.

Exhaust Only Defrost (Optional)Frost removal occurs when the supply blower de-ener-

gizes, the supply air damper and the heat exchange

damper close and the exhaust fan continues to circulate

only warm inside air through the flat plate heat exchang-

er to maintain ventilation. This process prevents the build

up of ice in the heat exchanger. Frost control is tempera-

ture initiated at 23°F to -22°F [-5°C to -30°C] and time

based.

Recirculation Defrost Module

The Recirculation Defrost Module is only available with

the 600 cfm and 1150 cfm units. The frost control cycle is

electronically controlled in response to the outside

temperature 23°F to -22°F [-5°C to -30°C]. On a call for

frost control, the supply air damper in the recirculation

module closes, exhaust fan is de-energized and the sup-

ply fan continues to recirculate warm air through the flat

plate heat exchanger. It is possible to extend the frost con-

trol times during very cold weather by removing the jumper

JU1-F on the circuit board. For dimension and weight

changes to the 600 cfm and 1150 cfm models with the

recirculation defrost module, see Appendix B-2 and B-4.

Remote Wall Control (Optional)

Remote mounted wall control options are solid state

controls that can be used to control the ventilators from a

remote location. The connection from the ventilator to the

control is low voltage and requires a 4 conductor (24

gauge minimum) LVT cable. Models are available with a

dehumidistat control and speed switching. The following

three options are available:

Standard Wall Control

Dehumidistat to engage high speed exchange. Slide

switch operation supporting continuous low exchange

and continuous high exchange.

Xtra Wall Control

Dehumidistat to engage high speed exchange.

Electronic push button operation supporting intermittent

(stand-by) ventilation, continuous low exchange, continu-

ous high exchange, maintenance indicator light and

exchange indicator light.

AquaAir Wall Control

Ideal for pool dehumidification. Dehumidistat to engage

high speed exchange. Electronic push button operation

supporting intermittent (stand-by) ventilation, continuous

low exchange, continuous high exchange, maintenance

indicator light and exchange indicator light.

Airflow Measurement and BalancingOnce installation is complete, the supply and exhaust

airflows should be balanced to ensure proper operation

and a good quality installation. A well designed duct

system with properly sized duct runs and equal static

pressure losses of both the supply and exhaust will aid in

balancing the unit. However, it will be necessary to take

flow measurements with the proper equipment to ensure

a balanced system. Magnehelic gauges and Flow

Measuring Stations (FMS) are available for 14" x 8" [356

x 203mm] or 20" x 8" [508 x 203mm] rectangular duct and

a range of round duct sizes. Please ask your supplier for

more information.

Flow Station PositionsWhether flow stations are permanently installed or used

temporarily, the position they are placed in is very impor-

tant to ensure accuracy as shown in Appendix C. The

best locations for mounting the FMS is in the long straight

sections of ducting where airflow has stabilized across

the area of the duct. This position will provide the most

accurate measurements.

The next best location for the FMS is immediately

before or after a 90 degree elbow and 12" [305mm] from

any damper. In straight sections of pipe, the FMS should

be installed at least 30" [762mm] from any fan outlet. This

applies to the "Supply Air Opening" connection on the

heat recovery ventilator and the "Exhaust Air Opening"

connection.

WARNINGA negative building pressure may develop during the

frost control cycle with possible backdrafting fumes from

combustion equipment.

- 6 -

With airflow measuring stations permanently installed,

balancing is done by measuring airflow on one side of the

heat recovery ventilator and then the other. Adjustments

can then be made to the damper to equalize airflows.

When using the temporary method, an FMS is installed

in one air duct of the heat recovery ventilator and the flow

recorded. The FMS is then relocated to the other air duct

and the airflow is recorded again. Dampers can then be

adjusted to equalize airflow. This procedure should be

repeated to ensure that the unit is balanced properly.

Balancing ProcedureBefore proceeding with balancing, all windows, over-

head doors and walk-in doors should be closed and

exhaust systems should be turned off.

The connections between the flow stations and the

ducts must be sealed with tape. Mount the magnehelic

gauge in a convenient location where it is level and will

not vibrate or be bumped. Zero the gauge. Measure the

exhaust air first as it is often the lowest due to a longer

duct system.

With the fan speed at maximum, connect the hoses

from the FMS to the magnehelic gauge. If the needle falls

below zero, reverse the hose connections. Ensure that

the damper is wide open. Take a reading from the mag-

nehelic gauge and record it. Remove the FMS and place

it in the supply duct. This process is not necessary if the

FMS is to be permanently mounted.

Repeat the procedure. If the reading is higher in the

supply duct, adjust the damper until the reading is the

same. If the reading is lower, return the FMS to the

exhaust duct and adjust the damper to obtain the same

reading as the supply duct.

System Service

Bi-Monthly Maintenance

Bi-monthly maintenance should include:

Air Filters

The standard foam filters are washable. Under normal

conditions it is recommended that they be cleaned every

two months. More frequent cleaning may be required

under extremely dirty operating conditions. Use a vacuum

cleaner to remove the heaviest portion of accumulated

dirt, then wash with warm water.

A medium efficiency filter for the supply airstream is

available from your supplier. This filter is disposable and

should be replaced when it becomes dirty.

Drain Pans and Interior of Unit

With the filters removed from the unit, the foil faced

insulation surfaces and drain pans should be wiped clean

with a soft cloth and mild cleaning solution. Ensure that

the drain fittings are free from dirt and draining freely.

Annual Maintenance

Annual maintenance should include:

Air Filters

Vacuum and wash standard foam filters. Replace

medium efficiency filter if present.

Drain Pans and Interior of Unit

Wash the foil faced insulation surfaces and wipe the

drain pans with a soft cloth and mild cleaning solution.

Check the drain fittings to ensure they are draining freely.

Flat Plate Heat Exchanger

The flat plate heat exchanger must be handled with

care. In order to ensure maximum efficiency of the parti-

tions, it is recommended that it be washed once a year

following the season of most intense use. Allow the flat

plate heat exchanger to soak for three hours in warm

water and mild soap. Rinse under a heavy stream of

water. When replacing the flat plate heat exchanger sec-

tions, make sure the flutes on the heat exchanger are

positioned in the supply airstream. Failure to do so will

result in low airflow on the exhaust airstream due to sys-

tem pressure trapping or holding condensate in the flutes.

WARNINGDisconnect power before maintaining the unit.

WARNINGDisconnect power before maintaining the unit.

Washable Foam Filter orMEF Filter - optional

Washable Foam Filter

Washable Foam Filter

MEF Filter - optional

Figure 1: 600 cfm and 1150 cfm

Figure 2: 700 cfm

Fans

Blower wheels and fan housing should be checked for

dirt build-up. If they appear dirty, it may be necessary to

remove the blower assembly and then vacuum the dust

out through the fan mouth. See figures 3 and 4 for instruc-

tions on removing the blower assembly.

System Operation Check

Verification of all control modes should be checked to

ensure proper operation. Refer to the Controls Section,

Sequence of Operation.

Testing and Replacement of the Damper Actuator

Check damper operation by switching between LOW -

COM or HIGH - COM on the dry contact terminal or by

switching through the modes on the optional remote wall

control. If the damper does not respond in one or both

directions, check all connections.

700 cfm ONLY: Check for 24 volt output between the

White/Red and the White/Orange wires at the damper

motor. If 24 volts can be measured at the damper motor,

the problem is either in the connections, the frost control

relay or the main circuit board.

600/1150 cfm ONLY: (CAUTION: 120 VAC) With the unit

powered but off, check for 120 volt output across the

white/black wires. If 120 volt can be measured at the

motor, replace the motor. If 120 volt cannot be measured

at the motor, check for 120 volts across pins J1-9 and

J1-1 at the printed circuit board.

Main Circuit Board Replacement

The main circuit board must be replaced if an electronic

problem arises. For example, the unit suddenly stops, the

unit stays in frost control mode all the time or if control

functions are not working properly.

Ensure that power is reaching the board. Test the

blower motors and damper actuators for operation when

directly connected to the appropriate power voltage. If the

motor and damper actuators function normally, replace

the main circuit board.

Motor and Blower Removal and Installation

Disconnect power from the unit. To determine if the fan

motor is burned out, disconnect the four-wire service con-

nector between the motor and cabinet. Connect the motor

directly to a 120 volt power source with an electrical cable

as follows:

If the motor functions normally, there is a problem with

the wiring connections or the main circuit board. Check all

wiring and replace main circuit board if necessary.

If the blower does not run, it must be replaced. To

replace the motor, remove the flat plate heat exchanger

from the unit. Disconnect the four-wire service connector

from the unit. Remove the fasteners holding the motor

assembly in place. Lift the assembly up and out, using

one hand under the motor and one hand to steady it.

Remove the assembly carefully from the unit to avoid

damage to the insulation, shelf, etc. Install the repaired

motor assembly by following these instructions in reverse.

WARNINGHot water and strong cleaning agents could damage

the polypropylene heat exchanger. Ensure the heat

exchanger is returned to the unit in the correct orienta-

tion. Use the sticker as a guide.

Figure 4: Blower Assembly Removal

700 cfm

RED + WHITE Low speed

BLUE + WHITE Medium speed

BLACK + WHITE High speed

Capacitor

Locking PlateRemove thesetwo screws

ServiceConnector

Thumbscrew

Figure 3: Blower Assembly Removal

600 cfm and 1150 cfm

- 7 -

- 8 -

3/8" [10mm]Threaded Rod(Supplied by others)

Rubber VibrationIsolater

Cabinet MountedU Channel

Wooden Curb(Supplied by others)

Bolt to Floor

Space must be left to allowconnection of drain lines with adequate slope for drainageDry Contacts

Dry Contacts

Space must be left to allow connectionof drain lines with adequate slope for drainage

Wooden Curb (Supplied by others)

Bolt to Floor

Rubber Vibration Isolator(Supplied by others)

U Channel(Supplied by others)

3/8" [10mm]Threaded Rod(Supplied by others)

NOTE: Diagrams show standard unit configuration.For units with the reversed door option, thedoor will be located here.

ReinforcedRubber Strap

Recirculation Module



700 cfm

Appendix A

Mounting Diagrams


- 9 -

4.00

0" [1

02]

8.00

0"[2

03]

8.00

0"[2

03] 3.

535"

[90]

4.00

0"[1

02]

28.0

05"

[711

]

14.0

00"

[356

]

5.85

9"[1

49]

13.3

75"

[340

]

23.5

00"

[597

]

2.75

0"[7

0]

14.0

00"

[356

]6.

500"

[165

] 8.00

0"[2

03]

8.00

0"[2

03]

14.1

03"

[358

]7.

705"

[196

]

4.00

0"[1

02]

24.5

00"

[622

]

12.0

05"

[305

]

4.02

8"[1

02]

34.0

00"

[864

]

19.2

07"

[488

]5.

125"

[130

]10

.005

"[2

54]

12.0

00"

[305

]15

.000

"[3

81]

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nits

with

the

reve

rsed

doo

r op

tion,

inte

rior

com

pone

nts

will

app

ear

as a

mirr

or im

age

of th

e ab

ove

diag

ram

.

FR

ON

T V

IEW

ST

RA

P M

OU

NT

ING

LOC

AT

ION

OU

TD

OO

R A

IRO

PE

NIN

G

RE

TU

RN

AIR

OP

EN

ING

RIG

HT

SID

E V

IEW

NO

TE

: A

min

imum

of 1

2.00

0" [3

05] c

lear

ance

from

any

ob

stru

ctio

n is

req

uire

d fo

r re

mov

al o

f the

con

trol

box

.N

OT

E:

A m

inim

um o

f 15.

000"

[381

] cle

aran

ce fr

om a

ny o

bstr

uctio

n is

req

uire

d fo

r re

mov

al o

f hea

t rec

over

y co

res,

fans

, etc

.T

he a

cces

s do

or c

an b

e re

mov

ed fr

om th

e ca

bine

t with

onl

y 2.

000"

[51]

of c

lear

ance

.

CO

NT

RO

L P

LAT

E

AC

CE

SS

DO

OR

HE

AT

RE

CO

VE

RY

CO

RE

RE

VE

RS

ED

DO

OR

OP

TIO

N

Dim

ensi

ons

in [

] ar

e m

illim

eter

s

Cen

ter

of g

ravi

ty

Dire

ctio

n of

airf

low

NO

TE

S:

PT

SH

RV

600i

PO

LY C

OR

EH

RV

600i

ALU

MIN

UM

CO

RE

LBS

38.4

924

.96

51.2

933

.26

148.

00

Kg

17.4

511

.32

23.2

615

.08

67.1

3

PT

SA B C D

TO

TAL

LBS

44.2

128

.67

58.9

238

.21

170.

00

20.0

013

.00

26.7

217

.30

77.1

1

Kg

A B C

TO

TAL

D

Line

vol

tage

in14

gau

ge w

ire n

ut

Con

dens

ate

drai

n fit

ting

(2x)

B3/

4" m

pt

CO

NN

EC

TIO

N T

AB

LE

CO

NN

EC

TIO

N S

IZE

S

NO

TE

: T

his

mod

el h

as a

dam

per

loca

ted

on th

e ou

tdoo

r in

take

con

nect

ion.

Thi

s da

mpe

r w

ill c

lose

dur

ing

a fr

ost c

ontr

ol c

ycle

or

whe

n th

e un

it is

pla

ced

in th

e 'O

FF

' pos

ition

with

pow

er m

aint

aine

d to

the

unit.

Thi

s da

mpe

r is

not

des

igne

d as

a b

ackd

raft

dam

per

and

will

rem

ain

open

if p

ower

is d

isco

nnec

ted

from

the

unit

for

any

reas

on.

A

FR

ON

T V

IEW

RIG

HT

SID

E V

IEW

BC

ON

DE

NS

AT

E D

RA

IN

A

Appendix B

Unit Dimensions

B-1: 600 cfm (without recirculation module)

- 10 -

28.1

20"

[714

]

14.0

00"

[356

]

4.00

0" [1

02]

1.75

0"[4

4]

8.00

0"[2

03]

2.75

0"[7

0]

19.2

07"

[488

]5.

125"

130]

AC

CE

SS

DO

OR

ST

RA

P M

OU

NT

ING

LOC

AT

ION

NO

TE

:F

or u

nits

with

the

reve

rsed

doo

r op

tion,

inte

rior

com

pone

nts

will

app

ear

as a

mirr

or im

age

of th

e ab

ove

diag

ram

.

49.5

50"

[1,2

59]

LIN

E V

OLT

AG

E IN

CO

NT

RO

L B

OX

DR

Y C

ON

TAC

TS

RE

VE

RS

ED

DO

OR

OP

TIO

N

FR

ES

H A

IRT

O B

UIL

DIN

G

EX

HA

US

T A

IRT

O O

UT

SID

E

8.00

0"[2

03]

4.00

0"[1

02]

24.5

00"

[622

]

3.53

0"[9

0]

12.0

00"

[305

]15

.000

"[3

81]

AC

CE

SS

DO

OR

HE

AT

RE

CO

VE

RY

CO

RE

RE

VE

RS

ED

DO

OR

OP

TIO

N

CO

NT

RO

L P

AN

EL

NO

TE

: A

min

imum

of 1

2.00

0" [3

05] c

lear

ance

from

any

obs

truc

tion

is r

equi

red

for

rem

oval

of t

he c

ontr

ol b

ox.

NO

TE

: A

min

imum

of 1

5.00

0" [3

81] c

lear

ance

from

any

obs

truc

tion

is r

equi

red

for

rem

oval

of

hea

t rec

over

y co

res,

fans

, etc

.T

he a

cces

s do

or c

an b

e re

mov

ed fr

om c

abin

et w

ith o

nly

2.00

0" [5

1] o

f cle

aran

ce.

8.00

0"[2

03]

8.00

0"[2

03]

14.1

00"

[358

]

14.0

00"

[356

]7.

100"

[180

]

FR

ES

H A

IRF

RO

M O

UT

SID

E

EX

HA

US

T A

IRF

RO

M B

UIL

DIN

G

4.00

0"[1

02]

1.75

0"[4

4]

NO

TE

: D

imen

sion

s in

[ ]

are

mill

imet

ers

HR

V60

0i P

OLY

CO

RE

with

rec

ircul

atio

n m

odul

eH

RV

600i

ALU

MIN

UM

CO

RE

with

rec

ircul

atio

n m

odul

e

197

LBS

(90

kg)

231

LBS

(10

5 kg

)

LEF

T S

IDE

VIE

W

FR

ON

T V

IEW

RIG

HT

SID

E V

IEW

FR

ON

T V

IEW

RIG

HT

SID

E V

IEW

For

Rec

irc D

efro

st O

nly

34.0

00"

[864

]

OU

TD

OO

R A

IR

RE

TU

RN

AIR

EX

HA

US

T A

IR

SU

PP

LY A

IR

Line

vol

tage

in14

gau

ge w

ire n

utC

onde

nsat

e dr

ain

fittin

g (2

x)A B

3/4"

mpt

CO

NN

EC

TIO

N T

AB

LE CO

NN

EC

TIO

N S

IZE

S

CO

ND

EN

SA

TE

DR

AIN

B

A

Appendix B Continued

Unit Dimensions

B-2: 600 cfm with recirculation module

- 11 -

41.2

06"

[1,0

47]

40.3

26"

[1,0

24]

20.0

00"

[508

]

5.71

5"[1

45]

20.6

20"

[524

]

14.2

50"

[362

]

34.0

00"

[864

]

5.12

5"[1

30]

19.2

07"

[488

]

4.02

8"[1

02]

11.3

25"

[288

]

12.0

00"

[305

]15

.000

"[3

81]

20.0

00"

[508

]

4.00

0"[1

02]

2.75

0"[7

0]

11.0

00"

[279

]20

.000

"[5

08]

9.87

8"[2

51]

24.5

00"

[622

]

8.00

0"[2

03]

8.00

0"[2

03]

4.00

0"[1

02]

8.00

0"[2

03]

10.0

00"

[254

]

FR

ES

H A

IRT

O B

UIL

DIN

G

EX

HA

US

T A

IRT

O O

UT

SID

E

LIN

E V

OLT

AG

E IN

LOW

VO

LTA

GE

TE

RM

INA

L S

TR

IPS

CO

NT

RO

L B

OX

AC

CE

SS

CO

NT

RO

L C

OV

ER

AC

CE

SS

DO

OR

HE

AT

RE

CO

VE

RY

CO

RE

RE

VE

RS

ED

DO

OR

OP

TIO

N

AC

CE

SS

DO

OR

EX

HA

US

T A

IRF

RO

M B

UIL

DIN

G

FR

ES

H A

IRF

RO

M O

UT

SID

E

ST

RA

P M

OU

NT

LOC

AT

ION

RE

VE

RS

ED

DO

OR

OP

TIO

N

CDB

A

TO

P V

IEW

OU

TD

OO

R A

IR

RE

TU

RN

AIR

NO

TE

: F

or u

nits

with

the

reve

rsed

doo

r op

tion,

inte

rior

com

pone

nts

will

app

ear

as a

mirr

or im

age

of th

e ab

ove

diag

ram

.

NO

TE

: A m

inim

um o

f 12.

000"

[305

] cle

aran

ce fr

om a

ny o

bstr

uctio

nis

req

uire

d fo

r re

mov

al o

f the

con

trol

box

.N

OT

E: A

min

imum

of 1

5.00

0" [3

81] c

lear

ance

from

any

obs

truc

tion

is r

equi

red

for

rem

oval

of h

eat r

ecov

ery

core

s, fa

ns, e

tc.

The

acc

ess

door

can

be

rem

oved

from

the

cabi

net w

ith o

nly

2.00

0" [5

1] o

f cle

aran

ce.

EX

HA

US

T A

IR

SU

PP

LY A

IR

LEF

T S

IDE

VIE

W

Dim

ensi

ons

in [

] ar

e m

illim

eter

sC

ente

r of

gra

vity

Dire

ctio

n of

airf

low

NO

TE

S:

PT

SH

RV

1200

i PO

LY C

OR

EH

RV

1200

i ALU

MIN

UM

CO

RE

LBS

54.0

238

.98

54.0

238

.98

186.

00

Kg

24.5

017

.68

24.5

017

.68

84.3

6

PT

SA B C D

TO

TAL

LBS

60.4

143

.59

60.4

143

.59

208.

00

27.4

019

.77

27.4

019

.77

94.3

4

Kg

A B C

TO

TAL

D

Line

vol

tage

in14

gau

ge w

ire n

utC

onde

nsat

e dr

ain

fittin

g (2

x)

A B3/

4" m

pt

CO

NN

EC

TIO

N T

AB

LE

CO

NN

EC

TIO

N S

IZE

S

NO

TE

: T

his

mod

el h

as a

dam

per

loca

ted

on th

e ou

tdoo

r in

take

con

nect

ion.

Thi

s da

mpe

r w

ill c

lose

dur

ing

a fr

ost c

ontr

ol c

ycle

or

whe

n th

e un

it is

pla

ced

in th

e 'O

FF

' pos

ition

with

pow

er m

aint

aine

d to

the

unit.

Thi

s da

mpe

r is

not

des

igne

d as

a b

ackd

raft

dam

per

and

will

rem

ain

open

if p

ower

is d

isco

nnec

ted

from

the

unit

for

any

reas

on.

FR

ON

T V

IEW

FR

ON

T V

IEW

RIG

HT

SID

E V

IEWR

IGH

T S

IDE

VIE

W

CO

ND

EN

SA

TE

DR

AIN

B

A


Unit Dimensions

B-3: 1150 cfm (without recirculation module)

- 12 -

8.00

0"[2

03]

1.75

0"[4

4]

10.0

00"

[254

]20

.000

"[5

08]

2.75

0"[7

0] LIN

E V

OLT

AG

E IN

DR

Y C

ON

TAC

TS

49.5

50"

[1,2

59]

ST

RA

P M

OU

NT

ING

LOC

AT

ION

FR

ES

H A

IRF

RO

M O

UT

SID

E

EX

HA

US

T A

IRF

RO

M B

UIL

DIN

G

5.12

5"[1

30]

HE

AT

RE

CO

VE

RY

CO

RE

RE

VE

RS

ED

DO

OR

OP

TIO

N

AC

CE

SS

DO

OR

15.0

00"

[381

]12

.000

"[3

05]

CO

NT

RO

L C

OV

ER

AC

CE

SS

DO

OR

20.0

00"

[508

]

20.0

00"

[508

]

10.0

00"

[254

]

19.2

07"

[488

]C

ON

TR

OL

BO

X

NO

TE

:F

or u

nits

with

the

reve

rsed

doo

r op

tion,

inte

rior

com

pone

nts

will

app

ear

as a

mirr

or im

age

of th

e ab

ove

diag

ram

.

NO

TE

: A m

inim

um o

f 12.

000"

[305

] cle

aran

ce fr

om a

ny o

bstr

uctio

nis

req

uire

d fo

r re

mov

al o

f the

con

trol

box

.N

OT

E: A

min

imum

of 1

5.00

0" [3

81] c

lear

ance

from

any

obs

truc

tion

is r

equi

red

for

rem

oval

of h

eat r

ecov

ery

core

s, fa

ns, e

tc.

The

acc

ess

door

can

be

rem

oved

from

cab

inet

with

onl

y 2.

000"

[51]

of c

lear

ance

.

RE

VE

RS

ED

DO

OR

OP

TIO

N

EX

HA

US

T A

IRT

O O

UT

SID

E

FR

ES

H A

IRT

O B

UIL

DIN

G

41.2

40"

[1,0

47]

24.5

00"

[622

]

8.00

0"[2

03]

4.00

0"[1

02]

3.53

0"[9

0]

8.00

0"[2

03]

8.00

0"[2

03]

4.00

0"[1

02]

1.75

0"[4

4]

NO

TE

: D

imen

sion

s in

[ ]

are

mill

imet

ers

HR

V12

00i P

OLY

CO

RE

with

rec

ircul

atio

n m

odul

eH

RV

1200

i ALU

MIN

UM

CO

RE

with

rec

ircul

atio

n m

odul

e

247

LBS

(11

2 kg

)26

9 LB

S (

122

kg)

LEF

T S

IDE

VIE

WF

RO

NT

VIE

W

FR

ON

T V

IEW

RIG

HT

SID

E V

IEW

RIG

HT

SID

E V

IEW

Line

vol

tage

in14

gau

ge w

ire n

utC

onde

nsat

e dr

ain

fittin

g (2

x)B

3/4"

mpt

CO

NN

EC

TIO

N T

AB

LEC

ON

NE

CT

ION

SIZ

ES

A

For

Rec

irc D

efro

st O

nly

CO

ND

EN

SA

TE

DR

AIN

B

A


Unit Dimensions

B-4: 1150 cfm with recirculation module

- 13 -

10.0

00"

[254

]

Cen

ter

of g

ravi

ty

Dire

ctio

n of

airf

low

HR

V70

0iLB

SK

g32

.74

14.8

568

.46

31.0

535

.20

15.9

773

.60

33.3

821

0.00

1.87

5"[4

8]

EX

HA

US

TA

IRO

PE

NIN

G

SU

PP

LYA

IRO

PE

NIN

G

20.7

50"

[527

]

8.00

0"[2

03]

10.7

50"

[273

]

7.50

0" [1

91]

10.6

05"

[269

]

12.1

04"

[307

]

2.15

7"[5

5]

2.00

0"[5

1]

37.0

00"

[940

]

24.7

36"

[628

]

31.0

80"

[789

]51

.000

"[1

,295

]

21.0

00"

[533

]

HE

AT

RE

CO

VE

RY

CO

RE

AC

CE

SS

DO

OR

47.0

00"

[1,1

94]

8.00

0"[2

03]

DE

FR

OS

T A

IRO

PE

NIN

G

EX

HA

US

TA

IRO

UT

DO

OR

AIR

OU

TD

OO

RA

IRO

PE

NIN

G

RE

TU

RN

AIR

OP

EN

ING

RE

TU

RN

AIR

SU

PP

LYA

IR

3.62

5"[9

2]2.

000"

[51]

14.0

00"

[356

]

1.87

5"[4

8]3.

750"

[95]

40.5

00"

[1,0

29]

8.00

0"[2

03]

12.2

50"

[311

]

8.00

0"[2

03]

15.2

50"

[387

]

2.00

0"[5

1]

LIN

E V

OLT

AG

E IN

NO

TE

: A m

inim

um o

f 12.

000"

[305

] cle

aran

ce fr

om a

ny o

bstr

uctio

n is

re

quire

d fo

r po

wer

hoo

k-up

, low

vol

tage

rem

ote

conn

ectio

n an

d co

ntro

l pan

el a

cces

s.

NO

TE

: A m

inim

um o

f 21.

000"

[533

] cle

aran

ce fr

om a

ny o

bstr

uctio

nis

req

uire

d fo

r re

mov

al o

f hea

t rec

over

y co

res,

fans

and

con

trol

box

acc

ess.

The

acc

ess

door

can

be

rem

oved

from

cab

inet

with

onl

y 2.

000"

[51]

of c

lear

ance

.

LOW

VO

LTA

GE

TE

RM

INA

L S

TR

IPS

8.00

0"[2

03]

A B C DT

OTA

L95

.25

22.5

00"

[572

]

AB

CD

TO

P V

IEW

Dim

ensi

ons

in [

] ar

e m

illim

eter

sN

OT

ES

:

PT

S Line

vol

tage

in14

gau

ge w

ire n

ut

Con

dens

ate

drai

n fit

ting

(2x)

A B3/

4" m

pt

CO

NN

EC

TIO

N T

AB

LE CO

NN

EC

TIO

N S

IZE

S

LEF

T S

IDE

VIE

WF

RO

NT

VIE

WR

IGH

T S

IDE

VIE

W

RIG

HT

SID

E V

IEW

CO

ND

EN

SA

TE

DR

AIN

B

A


Unit Dimensions

B-5: 700 cfm

- 14 -

Flow Measuring Station (FMS)

Balancing Damper

Canvas Vibration Isolator

Min. 12"[305mm]

Min. 30"[762mm]

Reverse Door Option

Exhaust AirFrom Building

Fresh Air From Outside

Min. 8" [203mm]

(Optional) Canvas Vibration Isolator

Min. 12"[305mm]

Min.12"[304mm]

Flow MeasuringStation (FMS)

Balancing Damper(not supplied)

Canvas Vibration Isolator

Dry Contacts

Min. 12"[304mm]

Min. 30"[762mm]

700 cfm

Appendix C

Flow Station Positions


- 15 -

Min. 3"[76mm]

Min. 1"[25mm]

3/4" NPTCoupler

Water Trap

Plastic HoseTo Drain

NOTE: All hose, pipe and couplers to be supplied by others.

Min. 1"[25mm]

Min. 3"[76mm]

Plastic Drain Fitting

To Drain

Copper orPlastic Pipe

Min. 3"

[76mm]

Min. 1"

[25mm]

3/4" NPT

Coupler

Water Trap

Plastic HoseTo Drain

NOTE: All hose, pipe and couplers to be supplied by others.

Min. 1"

[25mm]

Min. 3"

[76mm]

Plastic Drain Fitting

To Drain

Copper or

Plastic Pipe

700 cfm

Appendix D

Drain Connections


- 16 -

WALL CONTROL

CLASS 2 VOLTAGE

Black

OCCUPIEDTIMER/SENSOR

F

F

LOW

COMMON

HIGH

Red

Green

Yellow

NOTE: Connections are all dry contacts except wall control and 24VAC power supply.

Use of 24VAC circuit requires isolating contacts (ex. thermostat) to preventinterconnection of Class 2 outputs.

WallControl

JUM

PE

R

WALL CONTROL

CLASS 2 VOLTAGE

Black


F

F

LOW

COMMON

HIGH

Red

Green

Yellow



A low voltage remote control wiring interface is

provided on the unit. The connections for the low voltage

remote wiring are located on two terminals adjacent to

the exhaust fan outlet (or adjacent to the supply fan out-

let on the 700 cfm unit). All field installed wiring must be

low voltage class II.

Remote Wall Control

Optional wall control requires a 4-wire LVT 24 gauge

(or equivalent). This remote wall control runs on 12 VDC.

Low Voltage Controls

All other terminals are dry contacts.

Low voltage terminal control consists of the following:

Wall Control

4-wire LVT 24 gauge minimum.

Occupied (Night Setback) Timer/Sensor

24 VAC, needs dry contact.

LOW - COM - HIGH

Remote fan switching requires a single pole, double

throw switch (SPDT).

Fan Interlock switch (FF)

Dry contact closes on ventilation or frost control. Used

to control external fan source (G).

Three types of remote wall controls are available:

1. Standard Wall Control with fan switch and dehu-

midistat control.

2. Xtra Wall Control with fan mode selection, dehu-

midistat control and maintenance indicator.

3. AquaAir Wall Control with fan mode selection,

dehumidistat control and high speed recirculation

mode.

The remote wall controls work with the integrated elec-

tronic controls within the unit to control ventilation

sequences. Each wall control has different features and

requires 4-wire connection to the unit as shown below.

Without the wall control, fans can be operated with a

remote fan switch as shown in Appendix E-4.

NOTE: An occupied timer or sensor device cannot be

used with the Xtra wall control.

Appendix E

Terminal Control Diagrams

E-1: Terminal Label E-2: Wall Control Connection

- 17 -

JUMPER(factory installed)

OCC. CONTROL(field installed)NSB Timer

1

M

2 3 4 5

JUM

PE

R

WALL CONTROL

CLASS 2 VOLTAGE

Black


F

F

LOW

COMMON

HIGH

Red

Green

Yellow



WALL CONTROL

CLASS 2 VOLTAGE

Black


24 (-) VAC

24 (+) VAC

F

F

LOW

COMMON

HIGH

Red

Green

Yellow



JUM

PE

R

REMOTE FAN SWITCH

LOW HIGH

WALL CONTROL

CLASS 2 VOLTAGE

Black


F

F

LOW

COMMON

HIGH

Red

Green

Yellow



Occupancy control is achieved by connection to the

terminal interface shown below. These terminals require

a dry contact which could be provided by a number of

types of controls such as a timer, light sensor, occupancy

sensor, building management system or other. The unit

will not operate unless these contacts are closed!!

The illustration below shows a factory installed jumper

and programmable timer option.

NOTE: An occupied timer or sensor device cannot be

used with the Xtra wall control.

Remote fan control can be achieved by connecting dry

contact controls to the terminal interface at terminals

labeled: LOW - COM - HIGH. These controls could be

the following: SPDT switch, dehumidistat, CO2 sensor,

light sensor, timer, building management system, etc.

The illustration below represents a switch connected to

the unit.

Appendix E Continued

Terminal Control Diagrams

E-3: Occupied Timer/Sensor Connection E-4: Remote Fan Control

- 18 -

Control cover plate

Control box

Remote control access plateRemote wiring terminal block

HRV Cabinet

NOTE: Autotransformers (if equipped) are mounted on the back of the control box.

FU10155A-600i8A-1200i

XF1015

1200i600i

855VAXF1015

415VA

PJ2003

PJ2014

PJ1007

PJ1001A

UCB1021

CR1029

CR1023

1

2

3

4

5

6

A

B

CO

M

NC

NO

PJ2

011

PJ1

001

CR

1024C

R1026

1

0

48

26

1

0

48

26

FILTRAN

NOTE: Low speed motor selection may be replaced by medium speed. To make this change, replace the low speed wires (red) on relay CR1024 with the medium speed wires (blue).

Low Speed Setting Wire Connections 600 cfm and 1150 cfm

Appendix F

Electrical Connection Diagrams

Control Box Assembly 600 cfm and 1150 cfm

- 19 -

Although t

he 6

00 c

fm,

700 c

fm a

nd 1

150 c

fm m

odels

have g

ood e

ffic

iencie

s,

the s

upply

air c

ould

be c

old

er

than t

he a

mbie

nt

room

air.

It

is p

ossib

le t

o e

limin

ate

the d

iscom

fort

associa

ted w

ith t

his

tem

pera

ture

diffe

rence b

y insta

lling a

n e

lectr

ic d

uct

heate

r. T

his

will

tem

per

the

air b

efo

re it

is d

istr

ibute

d t

hro

ughout

the b

uild

ing.

The t

able

belo

w g

ives t

he h

eating r

equirem

ents

at

diffe

rent

tem

pera

ture

s a

nd a

irflow

s.

OU

TD

OO

R A

IR -

40°F

[-4

0°C

]O

UT

DO

OR

AIR

-2

2°F

[-3

0°C

]O

UT

DO

OR

AIR

-4

°F [

-20

°C]

OU

TD

OO

R A

IR 1

4°F

[-1

0°C

]O

UT

DO

OR

AIR

32°F

[0°C

]

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Supply

Air

Supply

Air

55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13

°C]

68°F

[20°C

]73°F

[23°C

]

(cfm

)(L

/s)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

1250

590

14.6

19.9

21.9

11.2

16.5

18.5

7.8

13.1

15.2

4.4

9.7

11

.81

.06

.38

.4

1200

566

13.5

18.6

20.6

10.4

15.5

17.4

7.2

12.3

14.3

4.0

9.1

11

.10

.85

.97

.9

1150

542

12.6

17.4

19.3

9.6

14.5

16.4

6.6

11.5

13.4

3.6

8.5

10

.40

.75

.57

.4

1100

675

11.2

15.9

17.7

8.5

13.2

15.0

5.8

10.5

12.3

3.1

7.7

9.6

0.4

5.0

6.8

1050

495

10.7

15.2

16.9

8.1

12.6

14.3

5.5

10.0

11.7

2.9

7.4

9.1

0.4

4.8

6.5

1000

472

9.9

14.1

15.7

7.4

11.7

13.3

5.0

9.3

10.9

2.6

6.9

8.5

0.2

4.4

6.1

900

425

8.5

12.4

13.8

6.4

10.2

11.7

4.3

8.1

9.6

2.2

6.0

7.5

0.1

3.9

5.4

800

377

7.0

10.4

11.7

5.2

8.6

9.9

3.4

6.8

8.2

1.7

5.0

6.4

-3

.34

.6

700

330

5.1

8.1

9.3

3.7

6.7

7.9

2.3

5.3

6.5

0.9

3.9

5.1

-2

.53

.7

NO

TE

: T

he d

ata

does n

ot re

flect a r

eduction in

effectiveness d

ue to fro

sting. B

ased o

n the s

tandard

air a

t: 1

.2 K

g/m

3 a

nd C

p =

1.0

KJ/K

g°C

13.3

5 lb/ft3

and C

p =

.24 B

tu/lbm

°F

Appendix G

Make-up Heat Requirements

1150 cfm600 cfm and 700 cfm

OU

TD

OO

R A

IR -

40°F

[-4

0°C

]O

UT

DO

OR

AIR

-2

2°F

[-3

0°C

]O

UT

DO

OR

AIR

-4

°F [

-20

°C]

OU

TD

OO

R A

IR 1

4°F

[-1

0°C

]O

UT

DO

OR

AIR

32°F

[0°C

]

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Desir

ed

Air

Tem

pera

ture

Supply

Air

Supply

Air

55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13°C

]68°F

[20°C

]73°F

[23°C

]55°F

[13

°C]

68°F

[20°C

]73°F

[23°C

]

(cfm

)(L

/s)

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

kW

700

330

7.4

10.4

11.5

5.6

8.6

9.7

3.9

6.8

8.0

2.1

5.1

6.2

0.3

3.3

4.4

650

307

6.6

9.4

10.5

5.0

7.8

8.9

3.4

6.2

7.3

1.8

4.6

5.6

0.2

3.0

4.0

600

283

5.9

8.5

9.4

4.5

7.0

8.0

3.0

5.6

6.5

1.6

4.1

5.1

0.1

2.7

3.7

550

259

5.2

7.6

8.5

3.9

6.3

7.2

2.6

5.0

5.9

1.3

3.7

4.6

0.1

2.4

3.3

500

236

4.0

6.1

7.0

3.0

5.1

5.9

1.9

4.0

4.9

0.9

3.0

3.8

-1

.92

.7

450

212

3.0

4.9

5.6

2.1

4.0

4.8

1.3

3.2

3.9

0.4

2.3

3.1

-1

.52

.2

400

189

2.2

3.9

4.6

1.5

3.2

3.9

0.9

2.5

3.2

0.2

1.9

2.5

-1

.21

.8

600 a

nd

700

CF

M U

NIT

115

0

CF

M U

NIT

SYMPTOMS POSSIBLE CAUSES SOLUTIONS

Inside air is too dry. Over ventilation - speed setting Adjust speed setting.

too high.

Dehumidistat setting is too low. Set dehumidistat control in a

higher position (if applicable).

Persistent condensation on Improper adjustment of Adjust dehumidistat control knob

windows, walls, ceilings, etc. dehumidistat control. to a lower setting.

Improper ventilation rate. Install a dehumidistat (option).

Window frame is too cold or leaky. Repair window frame.

Unit stops functioning. Electrical supply interrupted. Check the unit circuit breaker.

Air from supply diffusers too cold. Imbalance of supply and exhaust air. Check filters and heat exchangers

for blockage.

Check balance of airflows.

Outdoor temperature very cold. Install electric duct heater if necessary.

Unit makes annoying noise. Blower wheel out of alignment. Remove the motor/blower assembly

and adjust blower wheel.

Heat exchanger freezing up. Imbalance of supply and exhaust air. Check filters and heat exchangers

for blockage.

Check balance of airflows.

Frost control damper not functioning. Check for operation of both

frost control damper actuators.

Low exhaust airflow in winter Heat exchanger flutes are positioned Remove flat plate heat exchanger

season. in the exhaust airstream. sections and re-position the flute side

of the heat exchanger into the supply

airstream.

Appendix H

Trouble Shooting

Venmar CES products are licensed to use

the following labels of approval:

installation, operation and maintenance instructions · safety considerations hazards may exist...

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