Venmar HRV600i User manual

HRV
Heat Recovery Ventilators
Installation, Operation and Maintenance Instructions Manual
Capacity: 300 to 1,260 cfm
Model: HRV600i, HRV700i, HRV1200i
©2001 Venmar CES

Table of Contents
Nomenclature ......................................................................................................................................................................3
Safety Considerations .........................................................................................................................................................4
General Information ...........................................................................................................................................................4
Recommended Spare Parts ...........................................................................................................................................4
Inspection on Arrival .....................................................................................................................................................5
Unit Application Limitations ........................................................................................................................................5
Installation ...........................................................................................................................................................................5
Unit Location Requirements .........................................................................................................................................5
Internal Packaging ........................................................................................................................................................6
Ceiling Mount................................................................................................................................................................6
Floor Mount...................................................................................................................................................................6
Exhaust Dampers for Indoor Units ...............................................................................................................................7
Ductwork .......................................................................................................................................................................7
Drains .............................................................................................................................................................................8
Systems Integration.......................................................................................................................................................8
Electrical Connections ...................................................................................................................................................9
Start-up ..............................................................................................................................................................................10
Pre Start-up Procedure................................................................................................................................................10
Start-up Procedure ......................................................................................................................................................10
Frost Control ................................................................................................................................................................12
Sequence of Operation ...............................................................................................................................................12
Remote Wall Control ..................................................................................................................................................13
Airflow Measurement and Balancing ........................................................................................................................13
Flow Measuring Station Positions ..............................................................................................................................13
Balancing Procedure ...................................................................................................................................................14
Maintenance ......................................................................................................................................................................14
Bi-monthly Maintenance ............................................................................................................................................14
Annual Maintenance ..................................................................................................................................................15
Appendix A: Equipment Data ..........................................................................................................................................17
Appendix B: Dimensional Drawings .................................................................................................................................18
Appendix C: Flow Measuring Station and Balancing Damper Positions .......................................................................23
Appendix D: Drain Connections .......................................................................................................................................24
Appendix E: Mounting Diagrams .....................................................................................................................................25
Appendix F: Terminal Control Diagrams .........................................................................................................................26
Appendix G: HRV600i, HRV700i and HRV1200i Start-up Form and Checklist ...............................................................29
Appendix H: Electrical Control Box and Wire Connections ............................................................................................33
Appendix I: Components ..................................................................................................................................................34
Appendix J: Troubleshooting ...........................................................................................................................................37
Appendix K: Make-up Heat Requirements ......................................................................................................................38
Manufacturer reserves the right to discontinue or change specifications or designs without notice or obligation.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 2

Nomenclature
©Venmar CES 2001. All rights reserved throughout the world.
Illustrations cover the general appearance of Venmar CES products at the time of publication and Venmar CES reserves the
right to make changes in design and construction at any time without notice.
CES Group, LLC d/b/a Venmar CES furnishes equipment pursuant to its then-current Terms and Conditions of Sale and Lim-
ited Warranty, copies of which can be found under the Terms & Conditions of Sale and Warranty link at www.ces-group.com.
Extended warranties, if any, shall be as offered and acknowledged in writing by Venmar CES.
1. FROST CONTROL
D
– Recirc defrost1
E
– Exhaust only
N
– Non-defrost
3. EXTERNAL FINISH
W
– White pre-paint package
6. LOW SPEED
L – Reduced low speed
N – Normal low speed
5. ACCESS DOOR
S – Standard door
R – Reverse door
(right hand flow)
4. MEF FILTRATION
M– MEF supply filtration
X – No MEF supply filtration
2. ENERGY RECOVER
Y
P
– Poly core
A
– Aluminum core
H
– HM core
HRV600i Nomenclature (300–750 cfm)
Note:
1
The recirculation defrost damper module is factory installed.
561234
1. FROST CONTROL
D
– Recirc defrost1
E
– Exhaust only
N
– Non-defrost
3. EXTERNAL FINISH
W
– White pre-paint package
C
– Corrosion resistance package
6. LOW SPEED
L – Reduced low speed
N – Normal low speed
5. ACCESS DOOR
S – Standard door
R – Reverse door
(right hand flow)
4. MEF FILTRATION
M– MEF supply filtration
X – No MEF supply filtration
2. ENERGY RECOVER
Y
P
– Poly core
A
– Aluminum core
H
– HM core
561234
HRV1200i Nomenclature (700–1,250 cfm)
Note:
1 The recirculation defrost damper module is factory installed.
1. FROST CONTROL
D
– Recirc defrost
N
– Non-defrost
2. EXTERNAL FINISH
C – Corrosion resistant package
12
HRV700i Nomenclature (300–800 cfm)
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 3

Safety Considerations
Warning, Caution and Important notes appear through-
out this manual in specific and appropriate locations to
alert Installing Contractors and maintenance or service
personnel of potential safety hazards, possible equipment
damage or to alert personnel of special procedures or in-
structions that must be followed as outlined below.
Hazards may exist within this equipment because it con-
tains electrical and powerful moving components. Only
qualified service personnel should install or service this
equipment. Untrained personnel can perform basic main-
tenance such as maintaining filters. Observe precautions
marked in the literature and on labels attached to the unit.
Follow all safety codes.
IMPORTANT
Indicates supplementary information needed to fully
complete an instruction or installation.
General Information
This manual is designed to provide general information
on the common operation of all standard and optional
components that may have been installed in the unit. Note
that some sections of this manual may not apply to your
unit. This manual has been designed for general purpose
and describes options offered by Venmar CES that could
be included in the unit. Consult the manual from the
Component Manufacturer if more detailed technical infor-
mation about a specific component is required.
• Instructions for accessory items which are shipped
loose for field installation are included with the item.
• The electrical schematic is attached to the inside of
the control panel.
• See Appendix A for more detailed equipment data.
Recommended Spare Parts
Spare parts should be ordered at the time the installa-
tion is accepted by the Owner. Spare parts will reduce
the down time in the event of a failure. The list of spare
parts outlined below is considered minimal. Installation in
remote locations or when the operation of heating equip-
ment is essential may require more spare parts than listed.
Please contact the service department at Venmar CES for
recommendations.
Minimum spare parts include:
• Two sets of fuses
• One set of filters
CAUTION
Identifies an instruction which, if not followed, might se-
verely damage the unit, its components, the assembly or
final installation.
!
WARNING
Identifies an instruction which, if not followed, might
cause serious personal injuries including possibility of
death.
!
WARNING
Disconnect the main power switch to the unit before per-
forming service or maintenance. Electric shock can cause
personal injury.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 4

Inspection on Arrival
Inspect the equipment exterior and interior for any dam-
age on arrival that may have occurred during unit ship-
ment and for shipped loose parts. Ensure that there is no
damage to any protruding exterior components such as
the access door, door latches, door hinges, duct collars,
cabinet, etc. or to internal components such as fans, mo-
tors, flat plate heat recovery module, dampers, actuators
and drain pans. File a claim with the shipping company
if the unit is damaged. Check the packing slip against all
items received. If any items are missing, sign the carrier’s
bill of lading with the notation “Shipment Received Less
Item #___”. Contact the factory immediately if damage
is found. No return shipment will be accepted without
authorization.
Unit Application Limitations
Using Venmar CES units for temporary ventilation dur-
ing construction is subject to the unit warranty terms and
should be reviewed carefully before proceeding, as this
may void the standard warranty conditions.
Fine dust, larger particulate matter, solvents, varnishes and
other chemicals may cause filter clogging and elevated
cabinet pressures, higher power consumption and possible
irreparable damage to the flat plate heat recovery module,
which could reduce energy recovery performance of the
plate and damage to other components. Potential dam-
ages include, but are not limited to, these examples.
Installation
Unit Location Requirements
Consult local building codes and electrical codes for spe-
cial installation requirements and note additional require-
ments listed in this manual. In choosing the installation
location of the unit, consider the following factors:
• The unit must be mounted in a heated area to pre-
vent condensate lines from freezing.
• When possible, mount the unit away from occupied
areas to provide quiet operation.
• The unit should be installed to allow easy access for
maintenance. See Appendix B for dimensions and
recommended service and maintenance clearances.
• The unit should be mounted close to an exterior
partition to minimize the length of insulated duct-
work required. Outdoor air intakes and exhaust air
discharge should be separated by a minimum of 10
feet [3,000 mm] for Class 2 exhaust or as required by
ASHRAE 62.1 to avoid outside cross contamination.
• The fresh air intake must be positioned away from
sources of contamination such as hot chimneys or
kitchen exhaust vents.
• The unit should be mounted close to a drain and
120V, 60 Hz power supply.
• The unit should be mounted away from hot chim-
neys, electrical panels and other hazards.
• Locate the unit in an area requiring the least amount
of ductwork and directional changes to allow opti-
mum performance, to reduce pressure loss and to
achieve proper ventilation. Ductwork must be in ac-
cordance with ducting mechanical rules to prevent
sound issues and system effects. See Ductwork and
Appendix C for recommendations on ductwork.
• The unit should be mounted on a level foundation to
allow condensation to flow into internal drains Space
must be left under the unit to allow for drain trap
height and connection of drain lines. See Appendix D
for specific trap height and connection requirements.
IMPORTANT
Mounting options must allow 12” [305 mm] clearance in
front of the control box cover for access.
IMPORTANT
The exhaust dampers for indoor units (if ordered) are not
installed from the factory and must be installed on site.
See Exhaust Dampers for Indoor Units.
!
WARNING
Venmar CES equipment is not designed to be used for
temporary heating, cooling and/or ventilation during
construction.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 5

Ceiling Mount
The unit must be mounted level and may be hung with
the reinforced rubber straps provided as shown in Appen-
dix E. 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 may also be hung with 3/8” [10 mm] threaded
rod and U-channels or angles (field supplied) as shown in
Appendix E.
Rubber vibration isolation may be required and is recom-
mended for quiet operation. In some regions seismic vibra-
tion isolation may be required (isolators field supplied and
specified).
Internal Packaging
Remove access panels and all packaging from the unit.
Note that the reinforced rubber straps for ceiling mount
are packaged and located inside the unit as may be other
remote mounted options and/or accessories. Removal of
all packaging is critical.
Floor Mount
The unit must be mounted level and may be mounted
on a metal or wooden curb (not supplied) bolted to the
floor as shown in Appendix E. Space must be left under
the unit for drain trap height and to allow connection of
drain lines. A gradual slope is required for the condensate
water to drain by gravity (minimum ¼”per foot [6 mm per
305 mm]). If this is not possible, a pump should be used.
See Appendix D for specific trap height and connection
requirements.
IMPORTANT
Do not block access to control box, low voltage terminal
strips or line voltage input as indicated in Appendix E. Do
not block supply or exhaust ductwork and allow for 1” to
2” [25 to 51 mm] of insulation they may have on them.
IMPORTANT
If attachment of the unit to the curb is required, ensure
that screws, bolts and mounting hardware do not inter-
fere with moving parts or that the integrity of the cabinet
insulation is not affected.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 6

Exhaust Dampers for Indoor Units
An exhaust gravity backdraft damper is included for indoor
units with the recirculation defrost option and shipped
loose for field installation. An exhaust gravity backdraft
damper or a motorized exhaust damper is available as
an accessory for other defrost options or additional use
and shipped loose for field installation. Gravity backdraft
dampers are for horizontal airflow installations only.
Dampers are non-insulated, for installed in duct installa-
tion and are ¼” [6 mm] smaller “outside of frame” than
the duct size listed. An access panel in the duct on the
upstream left hand side (facing the airstream) for the mo-
torized damper is required for access to the actuator and
linkage which is mounted and located in the airstream.
The damper should be mounted sufficiently far enough
downstream from the exhaust fan discharge to avoid sys-
tem effect added pressure losses. A straight length of duct
same size as the unit exhaust discharge and length as indi-
cated in Ductwork followed by the damper and as shown
in Appendix C Note 2 is recommended.
Wiring for the 24V motorized exhaust air damper must
be provided and completed in the field by the Installer. A
separate 24V, 20 VA power supply is required and must
be field supplied for the motorized exhaust damper. Run
the +24V wire connection through the fan interlock con-
tacts on the microprocessor control board or unit terminals
6 and 7 (left side) to break power to the damper when the
exhaust fan is not running as shown in Appendix F for it to
spring return closed.
Ductwork
The supply and exhaust duct connections on the unit are
as follows:
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 supply
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 transmission from
the unit to the building (see Appendix C).
All ports on the 600 and 1,200 cfm units have 1” [25 mm]
flanges to facilitate the installation of the ductwork. Please
note that the outdoor air opening 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” [51 mm] flanges to
facilitate the installation of the ductwork. Please note the
outdoor air opening connection is factory set to be the left
side upper port. It is possible to reverse the operation of
the frost control damper in order to use the port on top of
the cabinet for outdoor air opening connection.
To change the outdoor air opening from the side to the
top use a screwdriver to change the rotation reversing
switch on the actuator. For port locations see Appendix B.
IMPORTANT
Duct sizes are for connection purposes only. Ducts should
be sized to keep noise and pressure drop to a minimum.
IMPORTANT
Straight duct sections minimum of 30” [762 mm] are re-
quired on supply to building and exhaust from the build-
ing to achieve good airflow performance.
Table 1: Exhaust Dampers for Indoor Units
Model Venmar CES
Part Number
Duct Size
(H x W) Damper Type
HRV600i
HRV700i
067120
8” x 14”
[203 x 356 mm]
Backdraft (pressure
open/gravity closed)
067121
24V non-insulated
motorized (power
open/spring return
closed)
HRV1200i
067116
8” x 20”
[203 x 508 mm]
Backdraft (pressure
open/gravity closed)
067118
24V non-insulated
motorized (power
open/spring return
closed)
Table 2: Supply and Exhaust Duct Connection Sizes
Unit Duct Size (H x W)
HRV600i or HRV700i 8” x 14” [203 x 356 mm]
HRV1200i 8” x 20” [203 x 508 mm]
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 7

Systems Integration
Forced Air System
When the Heat Recovery Ventilator (HRV) is installed in
conjunction with a forced air system, the air handler and
the network of ducts associated with it are used to dis-
tribute fresh air inside the building. If this type of system is
used, the main fan of the air handler must operate contin-
uously when the HRV unit is on. Fan interlock can be con-
nected to terminals 6 and 7 on the low voltage terminal
strips left side on the exterior of the unit (for low voltage
Class II circuit only). These terminals are factory connected
to dry contacts (FF) on the microprocessor control board
in the unit control box. The controller makes relay contact
between these terminals when the unit is operating, See
Fan Interlock Switch (FF).
Fresh air from the HRV should be introduced into the re-
turn duct of the air handler at a point no less than 6 feet
[1,829 mm] upstream of the air handler. The duct con-
nection for return air to the HRV should be made on the
return air duct at least 2 feet [610 mm] upstream of the
fresh air duct connection.
Separate Systems
Select locations for exhaust grilles and supply diffusers
to provide effective ventilation and avoid short circuiting
airflows through the space. Adjustable dampers should be
provided at every grille and diffuser to make balancing of
the system possible.
A proper selection of style and size of grilles and diffusers
is required to minimize pressure drop. The velocity of the
airflow should not exceed 400 feet per minute [2 meters
per second] 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
1,100 feet per minute [5.6 meters second] should be used
in calculations in duct design. The duct runs should be
kept as short as possible with the minimum amount of el-
bows and transitions. The Manufacturer recommends the
use of smooth radius elbows or square elbows with turn-
ing vanes to achieve maximum performance.
Dampers
An insulated motorized outdoor air damper is included
with the unit with recirculation defrost or exhaust only de-
frost which closes during a frost control cycle or placed in
the ‘Off’ position with power maintained to the unit. Out-
door air damper will remain open if power is disconnected
from the unit while operating in heat recovery mode.
A backdraft gravity damper is supplied with recircula-
tion defrost units to be installed in the exhaust air outlet
duct on indoor units. This damper is necessary to prevent
air from entering the building through the exhaust duct
when the unit is in recirculation defrost mode. See Exhaust
Dampers for Indoor Units for further installation details.
Mount the damper in the exhaust air to outside duct as
shown in Appendix C and Ductwork for fan outlet duct
considerations.
Drains
The drain fittings provided with the unit will accept a ¾”
[19 mm] 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 copper
or plastic pipe must be provided to prevent sewer gases
from entering the unit when connecting to a drain as illus-
trated in Appendix D.
Prime the trap by filling with water before start-up. Check
and clear drains annually. Drainage problems can occur
should drains be inactive and dry out, or due to reduced
water flow caused by buildup of algae. Regular mainte-
nance will prevent these problems from occurring.
IMPORTANT
Consult local building code for plumbing requirements
in your area. If copper pipe is to be used, ensure not to
solder to the ¾” [19 mm] coupler while it is attached to
the plastic drain fitting as deformation may occur. Ensure
adequate slope is present to allow good drainage (mini-
mum ¼” per foot [6 mm per 305 mm]).
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 8

Electrical Connections
Power Supply
A terminal block and strain relief bushing or a junction box
is provided for line voltage in power connection. See Ap-
pendix B for location.
The unit’s power line input power supply electrical require-
ments are as follows:
The units do not have a factory installed disconnect
switch. If disconnect is required field supply and install as
per NEC/Canadian Electrical Code. Use copper conductors
only.
All field wiring must comply with NEC and local require-
ments. In Canada, electrical connections must be in accor-
dance with CSA C22.1 Canadian Electrical Code Part One.
Field Connections
A wiring diagram is located inside the control box cover.
Low voltage terminal strips for remote control wiring in-
terface are provided on the exterior casing of the unit and
connected to the microprocessor control board for start-
ing, controlling sequence and monitoring. The Installer
must provide wiring for the controls and/or accessories
that may be supplied optionally or by others to the low
voltage terminal strips. See Appendix B for location.
The controls available for the Heat Recovery Ventilators,
their reference and type of connection are listed below.
For more information on the controls, wiring and terminal
connections see Appendix F.
The wall control is 12 VDC. Other terminals are 24 VAC or
dry contact control.
Notes:
1. Check the Controls and/or the Control Schematic
sections of the specification, optional and accessory
items shipped loose with or inside the unit for a list
of optional controls or wiring connections required to
the unit.
2. For the unit to start both ventilation and fan speed
calls are required except as noted. For ventilation
call the remote wall control, occupied timer/sensor,
manual switch or BMS contacts can be used. For fan
speed call the remote fan control, CO2 ventilation
control, manual switch or BMS contacts can be used.
Wall Control Connection
• Four-wire LVT 24 gauge minimum (12 VDC).
Occupied Timer/Sensor Connection
• Makes a dry contact to operate unit. Timer requires
separate 24 VAC. Do not use timer with Xtra wall
control.
Remote Fan Control
• Requires single pole, double throw switch for
Low–Common–High.
• Makes dry contact for speed setting.
CO2 Ventilation Control
• Makes dry contact.
• CO2 ventilation requires separate 24 VAC.
Smoke Detector
• Makes dry contact.
• Smoke detector requires separate 24 VAC.
Fan Interlock Switch (FF)
• External fan control can be achieved by connecting
an external fan source (G) through dry contacts (FF)
on the microprocessor control board (terminals 6 and
7 on the low voltage terminal strips left side). These
contacts are closed on a call for ventilation or frost
control. See Forced Air System.
Table 3: Electrical Requirements
600 CFM 700 CFM 1,200 CFM
Voltage 120V 120V 120V
MCA 9.5 6.6 14.3
MOP 12.0 9.0 20.0
!
WARNING
When installed, the unit must be electrically grounded in
accordance with local codes or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA70,
and/or the Canadian Electrical Code CSA C22.1. Unit
cabinet must have an uninterrupted, unbroken electrical
ground to minimize the possibility of personal injury if an
electrical fault should occur. Failure to follow this warn-
ing could result in the Installer being liable for personal
injury of others.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 9

Start-up
Pre Start-up Procedure
Before requesting start-up, check that the installation is
complete and unit is ready. Complete the pre start-up
check list below and in Appendix G for each unit as items
are checked.
1. Check the electrical disconnect is in the ‘Off’ position.
2. Open access doors and check the unit for shipped
loose parts, obstructive packaging, objects near or in
fans, dampers, flat plate exchanger, etc.
3. Check that the fans and motors are rotating freely.
4. Check that the air filters are installed and clean. Re-
place if necessary.
5. Check damper and linkages for free movement.
6. Check that ductwork is connected and complete.
7. Check that condensate drain connections have been
trapped, installed correctly and filled.
8. Check that all shipped loose or field supplied compo-
nents have been correctly installed and wired.
9. Check that all power supplies and control wiring
have been inspected and approved by the Local Au-
thorities having jurisdiction.
10. Check all factory and field wiring connections for
tightness. Tighten if necessary.
11. Check that all fuses are properly installed in holders.
12. Check the voltage at the disconnect switch against
the nameplate. If the voltage is not within 10% of
rated have the condition corrected before continuing
start-up.
13. Check that all field piping, venting, installation and
connections for the heating and cooling options and/
or accessories (if equipped) have been completed and
tested.
14. Check and adjust thermostat setpoints.
Start-up Procedure
To ensure proper operation of each unit, qualified person-
nel should perform the start-up and complete the checklist
below and the start-up form in Appendix G for permanent
record. A completed checklist will provide valuable infor-
mation for personnel performing future maintenance.
All units are factory run tested. Fans are set up to run cor-
rect when power is connected. All units are dynamically
balanced prior to shipping. However, there are certain op-
erating speeds at which the natural frequency of the rotat-
ing member is attuned to the natural frequency of the unit
panels, which may cause vibrations.
These vibrations can tend to reinforce each other in such
a way that excessive vibration can be encountered under
certain conditions. It is difficult to predetermine this condi-
tion because it is affected by the mounting arrangement
and the various modules used to make up the assembly
and the ductwork connections.
If the above check reveals no apparent discrepancies and
vibration is still present, the speed of the unit should be
changed to determine if the natural frequency is causing
the vibration.
Under no condition should the unit(s) be allowed to con-
tinue to operate when excessive unit vibration is apparent.
Permanent damage may result which will not be covered
under the warranty if the unit is allowed to continue in
operation when excessive vibrations are evident.
1. Before proceeding complete the pre start-up checklist.
2. For the unit to start when the disconnect switch
is turned on, a ventilation and fan speed call is
required.
a. Check for ventilation call from the remote wall
control connection, occupied timer/sensor con-
nection or BMS whichever is used. See Appen-
dix F for which terminal connections should be
closed (contacts made) once power is connected.
Circle which device is used.
b. Check for either low speed or high speed call
from the remote fan control, CO2 ventilation
control or BMS whichever is used. See Appen-
dix F for which terminal connections should be
closed (contacts made) once power is connected.
Circle which device is used.
c. If ‘a’ and ‘b’ are not connected, start can be ac-
complished by using temporary external dry con-
tacts or a jumper wire closing timer contacts 3
and 4 (left side) plus low speed contacts 3 and 4
(right side). Check if temporary dry contacts or a
jumper wire are used.
IMPORTANT
A completed copy must be sent back to the factory for
warranty validation and for factory assistance.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 10

3. Check that all access panels or doors are closed.
4. Turn the unit disconnect switch to the ‘On’ position.
5. Wait for fans to run and then shut off unit’s discon-
nect switch. Check that fans are rotating in the cor-
rect direction.
Note: If there is a negative pressure in the space and
an exhaust discharge damper is missing or not clos-
ing properly, the fans with single-phase motors could
be rotating in the wrong direction before the power
is turned on and may not correct itself. Check the
exhaust damper is present and dampers are closing
properly or take corrective action before proceeding.
6. Check that dampers are operating properly.
7. Close all access doors and turn the unit’s disconnect
to the ‘On’ position.
8. Re-check the voltage at the disconnect switch against
the nameplate with all fans operating. If the voltage
is not within 10% of rated have the condition cor-
rected before continuing start-up.
9. Check amperage draw to each motor against motor
nameplate FLA. Do not allow the motor amp draw
to exceed the Motor Manufacturer’s nameplate data.
Excessive amp draw will cause premature failure of
the motor and void the motor warranty. If signifi-
cantly higher, adjust the manual balancing dampers
in the ductwork (change the ductwork static pres-
sure) to lower the amperage draw below the name-
plate FLA.
10. On the HRV600i and HRV1200i there are three
speed settings available with the controls, only two
of which can be functional. The units are factory set
to use the low and high speed taps on the blower
motors. If additional airflow is required, the medium
speed tap can be used instead of the low speed tap.
See Appendix H for instructions on how to make this
change.
11. Check the fan operation on Low, Com and High.
Use a wall control or the dry contact switching to
run fan speeds as shown in Appendix F, Wall Control
Connection.
12. Check the operation of the control options and ac-
cessories provided with the unit. See Frost Control,
Sequence of Operation and Appendix F for functional
descriptions and further details.
13. Check the setpoints on thermostats and controls; ad-
just and record changes as required.
14. When unit has achieved steady state take measure-
ments and complete the readings section of the
Start-up Form in Appendix G and send copy of the
Start-up Form to Venmar CES to validate warranty.
Maintain a copy of the report at the unit for future
reference.
IMPORTANT
On initial power up, the unit will perform a system check
and operate at hight speed for five seconds.
!
WARNING
Only low or high speed contacts must be closed at any
one time never both using dry contacts/jumper wires oth-
erwise permanent damage to the motor and wiring will
occur.
Remote controls, if installed and connected, operate in
conjunction with the dry contacts/jumper wires. When
controlling units with remote controls, use extreme cau-
tion around moving mechanical components such as
fans, belts and motors as they can lead to severe personal
injury.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 11

Frost Control
The unit functions are controlled by an integrated mi-
croprocessor control board included in the unit as per
the frost control selected, the sequence of operation as
described below and according to the options selected as
described in Appendix F.
Exhaust Only Defrost
The exhaust only frost control cycle is electronically con-
trolled in response to outside air temperature. On a call for
defrost, the outside air damper and the heat exchanger
core damper close, the supply fan is de-energized and the
exhaust fan continues to draw warm room air through
the flat plate heat exchanger to remove the buildup of ice.
Frost control is initiated at an outdoor temperature of 23°F
[−5°C].The defrost/ventilation cycle is time and tempera-
ture based per Table 4.
Recirculation Defrost
The recirculation frost control cycle is electronically con-
trolled in response to the outside air temperature. On a
call for defrost, the outside air damper closes, the exhaust
fan is de-energized, the exhaust gravity backdraft and/or
motorized damper closes, the recirculation defrost damper
opens and the supply fan circulates warm air through the
flat plate heat exchanger to remove the buildup of ice. For
the HRV700i, it is possible to extend the frost control times
during very cold weather by removing the jumper JU1-F on
the circuit board. Frost control is initiated at an outdoor air
temperature of 23°F [−5°C]. The defrost/ventilation cycle is
time and temperature based per Table 4.
Non-defrost
No frost control can be used only in areas where the win-
ter outdoor air condition stays above 23°F [−5°C] and the
return air humidity level is below 20%.
Sequence of Operation
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.
IMPORTANT
On initial power up, the unit will perform a system check
and operate at high speed for five seconds.
Table 4: Recirculation (R) and Exhaust Only (E) Defrost
HRV
Model Stage Type of Defrost
Initiate
Temperature
Ventilation Time
(Minutes) Defrost
Time/Run Time
Standard Extended
Aluminum and Polypropylene Core Heat Exchangers
600i
1200i
1 R/E 23°F −5°C 12/60 N/A
2 R/E 5°F −15°C 12/24 N/A
3 R/E −21°F −30°C 12/12 N/A
700i
1 R 23°F −5°C 6/60 10/28
2 R 5°F −15°C 6/32 10/28
3 R −21°F −30°C 6/19 10/15
Heat and Moisture (HM) Core Heat Exchangers
600i
1200i
1 R/E 23°F −5°C 10/50 10/30
2 R/E 5°F −15°C 10/30 10/20
3 R/E −21°F −30°C 10/20 10/15
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 12

Remote Wall Control
Remote mounted wall control options are solid state con-
trols 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 four 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 con-
tinuous high exchange.
Xtra Wall Control
Dehumidistat to engage high speed exchange. Electronic
push button operation supporting intermittent (standby)
ventilation, continuous low exchange, continuous high
exchange, maintenance indicator light and exchange indi-
cator light.
Aqua Air Wall Control
Ideal for pool dehumidification. Dehumidistat to engage
high speed exchange. Electronic push button operation
supporting intermittent (standby) ventilation, continuous
low exchange, continuous high exchange, maintenance
indicator light and exchange indicator light.
Airflow Measurement and Balancing
Once installation is complete, the supply and exhaust air-
flows 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 airflow
balancing. However, it will be necessary to take flow
measurements using AMCA suggested methods. The
recommended methods would be a velocity traverse mea-
surement or flow measuring stations (FMS) installed in the
ducts with magnehelic pressure gauges.
Flow Measuring Station Positions
It is important to locate the FMS in the ‘warm side’ duct-
work to minimize the effect of differences in air density,
especially when balancing during extremely cold outside
conditions. Air density variations can affect the FMS by
more than 15%. The FMS should be located downstream
from straight sections of duct and not immediately after
fans or obstructions that will cause turbulent flow. Flow
control or balancing dampers should be installed down-
stream from the FMS so flow through the FMS is not
disturbed. Dampers can then be adjusted to equalize flow
rates in the ducts.
Whether 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 sec-
tions of ducting where airflow has stabilized across the
area of the duct. This position will provide the most accu-
rate measurements.
The next best location for the FMS is immediately before
or after a 90 degree elbow and 12” [305 mm] from any
damper. In straight sections of pipe, the FMS should be
installed at least 30” [762 mm] from any fan outlet. This
applies to the supply air opening connection on the HRV
and the exhaust air opening connection.
With airflow measuring stations permanently installed,
balancing is done by measuring airflow on one side of the
HRV 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 HRV 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.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 13

Maintenance
See Appendix A for physical data on units, Appendix I for
component locations and Appendix J for troubleshooting
information. A more detailed description of major mainte-
nance items and timeframes follows.
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 avail-
able 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 insu-
lation 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.
!
WARNING
Disconnect the main power switch to the unit before per-
forming service and maintenance procedures.
Balancing Procedure
Before proceeding with balancing, all windows, overhead
doors and walk-in doors should be closed and exhaust sys-
tems 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 magnehelic
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 sup-
ply 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.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 14

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.
Remove the flat plate heat exchangers by sliding them out
from the tracks holding them in place. In order to ensure
maximum efficiency of the partitions, it is recommended
that the heat exchanger be cleaned once a year following
the season of most intense use. For polypropylene and alu-
minum media, allow the heat exchanger to soak for three
hours in warm water and mild soap. Rinse under a heavy
stream of water. For HM heat exchangers, use a vacuum
cleaner or low pressure air. It is not recommended to use
solvents or detergents as these may damage the media
or structure of the heat exchanger. When replacing the
flat plate heat exchanger sections, ensure they are of the
proper vertical orientation. Failure to do so may result in
low airflow on the exhaust airstream due to system pres-
sure trapping or holding condensate in the flutes.
Fans
Blower wheels and fan housing should be checked for
dirt buildup. If they appear dirty, it may be necessary to
remove the blower assembly and then vacuum the dust
out through the fan mouth. See Figure 1 and Figure 2 for
instructions on removing the blower assembly.
System Operation Check
Verification of all control modes should be checked to en-
sure proper operation. Refer to Sequence of Operation.
Testing and Replacement of the Damper
Actuator
Check damper operation by switching between Low–Com
or High–Com on the low voltage terminal strips 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 24V output between the white/red and the
white/orange wires at the damper motor. If 24V can be
measured at the damper motor, the problem is either in
the connections, the frost control relay or the microproces-
sor control board.
600 and 1,200 cfm Only
With the unit powered but off, check for 120V output
across the white/black wires. If 120V can be measured at
the motor, replace the motor. If 120V cannot be measured
at the motor, check for 120V across pins J1-9 and J1-1 at
the microprocessor control board.
Microprocessor Control Board Replacement
The microprocessor control 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 microprocessor control
board. Test the blower motors and damper actuators for
operation when directly connected to the appropriate
power voltage. If the motor and damper actuators func-
tion normally, replace the main microprocessor control
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
connector between the motor and cabinet. Connect the
motor directly to a 120V power source with an electrical
cable as follows:
!
WARNING
Disconnect the main power switch to the unit before per-
forming service and maintenance procedures.
!
WARNING
Hot water and strong cleaning agents could damage the
heat exchanger. Ensure the heat exchanger is returned to
the unit in the correct orientation. Failure to do so may
result in damage to the exchanger. Follow instructions on
the label.
CAUTION
120 VAC.
Table 5: Motor Connections
Red + White Low speed
Blue + White Medium speed
Black + White High speed
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 15

If the motor functions normally, there is a problem with
the wiring connections or the microprocessor control
board. Check all wiring and replace microprocessor control
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.
Remove these
two screws
Locking plate
Capacitor
Figure 1: Blower assembly removal – HRV600i and
HRV1200i
Vis de serrage
Connecteur
d’alimentation
Figure 2: Blower assembly removal – HRV700i
!
WARNING
Disconnect the main power switch to the unit before per-
forming service and maintenance procedures.
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 16

Appendix A: Equipment Data
Table A1: Equipment Data
HRV600i HRV700i HRV1200i
Airflow Range 300 to to 750 CFM 300 to 800 CFM 700 to 1,250 CFM
Fans
Supply type Direct drive Direct drive Direct drive
Wheel type Forward curved Forward curved Forward curved
Wheel size Ø7” x 6”
[Ø178 x 152 mm]
Ø9” x 7”
[Ø229 x 178 mm]
Ø7” x 6” (two)
[Ø178 x 152 mm]
Bearing Sleeve direct drive Sleeve direct drive Sleeve direct drive
Housing Cold rolled Cold rolled Cold rolled
Shaft ½” [13 mm] ½” [13 mm] ½” [13 mm] keyed
Motor (HP) ¼ 1⁄6 1⁄3
Exhaust type Direct drive Direct drive Direct drive
Wheel type Forward curved Forward curved Forward curved
Wheel size Ø7” x 6”
[Ø178 x 152 mm]
Ø9” x 7”
[Ø229 x 178 mm]
Ø7” x 6”
[Ø178 x 152 mm]
Bearing Sleeve direct drive Sleeve direct drive Sleeve direct drive
Housing Cold rolled Cold rolled Cold rolled
Shaft ½” [13 mm] ½” [13 mm] ½” [13 mm] keyed
Motor (HP) ¼ 1⁄61⁄3
Flat Plate Heat Recovery Module
Size 12” x 12” x 26”
[305 x 305 x 660 mm]
23” x 23” x 19”
[584 x 584 x 483 mm]
12” x 12” x 39”
[305 x 305 x 991 mm]
Flat plate material Polypropylene,
aluminum or HM Polypropylene Polypropylene, aluminum or HM
Filters
Type (primary) Washable foam Washable foam Washable foam
Size 13” x 11” x 1”
[330 x 279 x 25 mm]
22.25” x 19” x 1”
[572 x 483 x 25 mm]
13” x 11” x 1”
[330 x 279 x 25 mm]
Number per airstream 2 1 3
Type (secondary) MEF MEF MEF
Size 13” x 11.25” x 2”
[330 x 286 x 51 mm]
22.625” x 19.25” x 1.75”
[575 x 489 x 51 mm]
13” x 11.25” x 2”
[330 x 286 x 51 mm]
Number per airstream 2 1 (See Note 1) 3
Weight (With Recirculation Defrost)
Net core weight maximum
Polypropylene 197 lbs [90 kg] 210 lbs [95 kg] 247 lbs [112 kg]
Aluminum 204 lbs [93 kg] n/a 257 lbs [117 kg]
HM 208 lbs [95 kg] n/a 264 lbs [120 kg]
Shipping weight Add 40 lbs [18 kg] 250 lbs [114 kg] Add 40 lbs [18 kg]
Weight (With Exhaust Only Defrost)
Net core weight maximum
Polypropylene 148 lbs [67 kg] n/a 186 lbs [85 kg]
Aluminum 155 lbs [70 kg] n/a 196 lbs [89 kg]
HM 159 lbs [72 kg] n/a 203 lbs [92 kg]
Shipping weight Add 40 lbs [18 kg] n/a Add 40 lbs [18 kg]
Shipping Dimensions
(L x W x H)
40” x 32” x 32”
[1,016 x 813 x 813 mm]
26” x 54” x 46”
[660 x 1,372 x 1,168 mm]
38” x 44” x 32”
[965 x 1,117 x 813 mm]
Note:
1 – Available as accessory on supply only, in addition to washable foam filter
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 17

Appendix B: Dimensional Drawings
13.375”
[340]
12.005”
[305]
CD
B
A
TOP VIEW
LeftRight
Back
Front
4.000” [102]
8.000”
[203]
8.000”
[203]
3.535” [90]
4.000”
[102]
28.005”
[711]
14.000”
[356]
5.859” [149]
4.028”
[102]
10.005”
[254]
EA-E
SA-E
Power line
input
Low voltage terminal strips
Control box
Reversed door option
LEFT VIEW
A
34.000”
[864]
19.207”
[488] 5.125”
[130]
EA OA
RA
SA
Note:
For units with the reversed door option, interior
components will appear as a mirror image of the above diagram.
FRONT VIEW
23.500”
[597]
2.750”
[70]
2.750”
[70]
14.000”
[356]
6.500”
[165]
1.800”
[46]
8.000”
[203]
8.000”
[203]
14.103”
[358]
7.705”
[196]
4.000”
[102]
24.500”
[622]
Strap mounting location
OA-E RA-E
RIGHT VIEW
BCondensate drain
12.000”
[305]
Control box cover plat
e
FRONT VIEW
15.000”
[381]
Access door
Heat recovery core
Reversed door option
RIGHT VIEW
Poly Core Aluminum Core HM Core PTS LBS Kg PTS LBS Kg PTS LBS Kg A 38 17 A 40 18 A 41 19
B 25 11 B 26 12 B 27 12 C 52 24 C 55 25 C 56 25 D 33 15 D 34 15 D 35 16
TOTAL 148 67 TOTAL 155 70 TOTAL 159 72
Connection Table Connection Sizes
A Line voltage in 14 gauge wire nut
B Condensate drain fitting (2x) 3/4” MPT
Notes:
Dimensions in [ ] are millimeters. Center of gravity Direction of airflow A minimum of 15.000” [381] clearance from any obstruction is required for removal of heat recovery cores, fans, etc. This model has a damper located on the outdoor intake connection. This damper will close during a frost control cycle or when the unit is placed in the ‘Off‘ position with power maintained to the unit. This damper is not designed as a backdraft damper and will remain open if power is disconnected from the unit for any reason.
Note: The access door can be removed from the cabinet with only 2.000” [51] of clearance.
Note:
A minimum of 12.000” [305] clearance from any
obstruction is required for removal of the control box.
Figure B1: HRV600i unit dimensional drawing (with exhaust only defrost)
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 18

12.000”
[305]
Control panel
FRONT VIEW
Note:
A minimum of 12.000” [305] clearance from any
obstruction is required for removal of the control box.
15.000”
[381]
Access door
Heat recovery core
Reversed door option
RIGHT VIEW
Note: The access door can be removed from cabinet with only 2.000” [51] of clearance.
Access door
Strap mounting location
8.000”
[203]
8.000”
[203]
14.100”
[358]
14.000”
[356]
7.100”
[180]
OA-E
RA-E
4.000”
[102]
1.750”
[44]
RIGHT VIEW
Condensate drain
B
34.000”
[864]
OA RA
EA SA
19.207”
[488] 5.125”
[130]
Note: For units with the reversed door option, interior components will appear as a mirror image of the above diagram.
49.550”
[1,259]
FRONT VIEW
For recirc
defrost only
LeftRight
Back
Front
A
Low voltage terminal strips
Reversed door option
SA-E
EA-E
8.000”
[203]
4.000”
[102]
24.500”
[622]
3.530”
[90]
28.120”
[714]
14.000”
[356]
4.000” [102]
1.750”
[44]
8.000”
[203]
2.750”
[70]
Power line input
Control box
LEFT VIEW
Notes:
Dimensions in [ ] are millimeters. A minimum of 15.000” [381] clearance from any obstruction is required for removal of heat recovery cores, fans, etc.
HRV600i (with recirculation defrost)
Poly core 197 lbs [90 kg] Aluminum core 204 lbs [93 kg] HM core 208 lbs [95 kg]
Connection Table Connection Sizes
A Line voltage in 14 gauge wire nut
B Condensate drain fitting (2x) 3/4” MPT
Figure B2: HRV600i unit dimensional drawing (with recirculation defrost)
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 19

21.000”
[533]
Heat recovery core
Access door
RIGHT VIEW
1.875”
[48]
EA-E SA-E
20.750”
[527]
8.000”
[203]
10.750”
[273]
7.500” [191]
10.605”
[269]
12.104”
[307]
2.157”
[55]
Power line input
Low voltage terminal strips
8.000”
[203]
RIGHT VIEW
Condensate drain
B
A
2.000”
[51]
37.000”
[940]
24.736”
[628]
31.080”
[789]
51.000”
[1,295]
47.000”
[1,194]
8.000”
[203] Defrost air
opening
EA
OA RA SA
3.625”
[92]
2.000”
[51]
FRONT VIEW
Control box
OA-E RA-E
2.000”
[51]
14.000”
[356]
1.875”
[48]
3.750”
[95]
40.500”
[1,029]
8.000”
[203]
12.250”
[311]
8.000”
[203]
15.250”
[387]
LEFT VIEW
10.000”
[254]
22.500”
[572]
AB
CD
TOP VIEW
LeftRight
Back
Front
Note:
The access door can be removed from cabinet with only 2.000” [51] of clearance.
Notes:
Dimensions in [ ] are millimeters. Center of gravity Direction of airflow A minimum of 21.000” [533] clearance from any obstruction is required for removal of heat recovery cores, fans and control box access. A minimum of 12.000” [305] clearance from any obstruction is required for power hook-up, low voltage remote connection and control panel access. Air is drawn in to the defrost air opening on top of the unit for recirculation defrost from the space or room in which the unit is mounted. If this air is not suitable for supply air or if a negative pressure is created and is not acceptable, then the defrost air opening should be ducted to a branch from the return air duct or from a suitable space.
Connection Table Connection Sizes
A Line voltage in 14 gauge wire nut
B Condensate drain fitting (2x) 3/4” MPT
PTS LBS Kg
A 34 15 B 67 30
C 36 16
D 74 34 TOTAL 211 95
Figure B3: HRV700i unit dimensional drawing
VCES-HRV-IOM-1C – HRV600i, HRV700i, HRV1200i 20