Broan HRV90T User manual

INSTALLATION GUIDE
Model ERV70S
(side ports)
Model ERV70T
(top ports)
Models HRV80S*
and HRV90S*
(side ports)
Models HRV80T*
and HRV90T*
(top ports)
* These products earned the ENERGY STAR®by meeting strict energy efficiency guidelines set by Natural Resources
Canada and the US EPA. They meet ENERGY STAR requirements only when used in Canada.
RESIDENTIAL INDOOR USE ONLY
! !
READ AND SAVE THESE INSTRUCTIONS
22633 rev. 01
VB0192
VB0190
VB0193
VB0191
Broan-NuTone LLC; Hartford, Wisconsin www.broan.com 800-558-1711
REGISTER YOUR PRODUCT ONLINE AT: www.broan.com/register
For additional information - visit www.broan.com

Because of the amount of models covered in this publication, the illustrations are typical ones. Some details of your unit may be slightly
different than the ones shown.
Please take note that this manual uses the following symbols to emphasize particular information:
Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.
Identifies an instruction which, if not followed, may severely damage the unit and/or its components.
NOTE: Indicates supplementary information needed to fully complete an instruction.
2
WARNING
!
CAUTION
ABOUT THIS GUIDE
ABOUT THESE UNITS
LIMITATION
For residential (domestic) installation only. Installation work and electrical wiring must be done by a qualified person(s) in accordance with
all applicable codes and standards, including fire-rated construction codes and standards.
WARNING
!
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or
telephone number listed in the warranty.
2. We recommend that your unit be inspected by a specialized technician once a year.
3. Before servicing or cleaning the unit, disconnect power cord from electrical outlet.
4. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.
5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
6. Do not use the units with any solid-state speed control device other than the corresponding ones listed below:
7. This unit must be grounded. The power supply cord has a 3-prong grounding plug for your personal safety. It must be plugged into a
mating 3-prong grounding receptacle, grounded in accordance with the national electrical code and local codes and ordinances.
Do not remove the ground prong. Do not use an extension cord.
8. Do not install in a cooking area or connect directly to any appliances.
9. Do not use to exhaust hazardous or explosive materials and vapors.
10. When performing installation, servicing or cleaning the unit, it is recommended to wear safety glasses and gloves.
11. Due to the weight of the unit, two installers are recommended to perform installation.
12. Whenapplicablelocalregulationscomprisemorerestrictiveinstallationand/orcertificationrequirements,theaforementionedrequirements
prevail on those of this document and the installer agrees to conform to these at his own expenses.
MAIN CONTROL AUXILIARY CONTROL
VT8W, VT7W, VT4W OR VT6W 59W, VB20W, VB60W
CAUTION
1. To avoid prematurate clogged filters, turn OFF the unit during construction or renovation.
2. Please read specification label on product for further information and requirements.
3. Be sure to duct air outside – Do not intake/exhaust air into spaces within walls or ceiling or into attics, crawl spaces, or garage.
4. Intended for residential installation only in accordance with the requirements of NFPA 90B.
5. Do not run any air ducts directly above or closer than 2 ft to any furnace or its supply plenum, boiler, or other heat producing appliance.
If a duct has to be connected to the furnace return plenum, it must be connected not closer than 9’ 10” from this plenum connection to
the furnace.
6. The ductwork is intended to be installed in compliance with all applicable codes.
7. When leaving the house for a long period of time (more than two weeks), a responsible person should regularly check if the unit
operates adequately.
8. If the ductwork passes through an unconditioned space (e.g.: attic), the unit must operate continuously except when performing
maintenance and/or repair. Also, the ambient temperature of the house should never drop below 65°F.

TABLE OF CONTENTS
1. T ECHNICAL SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
2.1 AIR DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 DEFROST CYCLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. TYPICAL INSTALLATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 FULLY DUCTED SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 CENTRAL DRAW POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.3 SIMPLIFIED INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
4.1 INSPECT THE CONTENT OF THE BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 LOCATING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 PLANNING OF THE DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.4 INSTALLING THE DUCTWORK AND REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
4.5 CONNECTING THE DUCTS TO THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.6 INSTALLING TWO EXTERIOR HOODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.7 CONNECTING THE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5. CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
5.1 UNITS BOOTING SEQUENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 INTEGRATED CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 SETTING EXTENDED DEFROST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.4 ELECTRICAL CONNECTION TO MAIN CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.5 ELECTRICAL CONNECTION TO OPTIONAL AUXILIARY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6. ELECTRICAL CONNECTION TO THE FURNACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7. W IRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-16
7.1 HRV80TE AND HRV80SE MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2 ERV70T AND ERV70S MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3 HRV90T AND HRV90S MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8. BALANCING THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.1 WHAT YOU NEED TO BALANCE THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.2 PRELIMINARY STAGES TO BALANCE THE UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.3 BALANCING PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9. SERVICE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20
3

1. TECHNICAL SUPPORT (FOR ASSISTANCE)
FOR ASSISTANCE, CALL ON WEEKDAYS, 8:30 AM TO 5:00 PM (EASTERN STANDARD TIME).
NOTE: THIS PHONE NUMBER IS STRICTLY RESERVED FOR INSTALLERS USE ONLY.DONOT CALL THIS NUMBER TO ORDER PART S.
1-800-543-3055 (TOLL FREE)
2.TECHNICAL DATA
2.1 AIR DISTRIBUTION
VF0051
TOP PORTS UNITS SIDE PORTS UNITS
UNIT FRONT UNIT FRONT
FRESH AIR
TO BUILDING
STALE AIR
FROM
BUILDING
STALE AIR
TO OUTDOORS
FRESH AIR
FROM OUTDOORS
FRESH AIR
TO BUILDING
STALE AIR
FROM
BUILDING
STALE AIR
TO OUTDOORS
FRESH AIR
FROM
OUTDOORS
4
2.2 DEFROST CYCLES
ERV70T AND ERV70S UNITS
OUTDOOR
TEMPERATURE
DEFROST CYCLES
(MINUTES)
EXTENDED DEFROST*
CYCLES (MINUTES)
°F DEFROSTING
OPERATION
BETWEEN EACH
DEFROST CYCLE
DEFROSTING
OPERATION
BETWEEN EACH
DEFROST CYCLE
23722715
5 7 22 7 15
-17715712
* In a cold region (outdoor temperature -17°F and lower), it may be necessary to setup EXTENDED DEFROST. See Section 5.3.
HRV80S, HRV80T, HRV90S AND HRV90T UNITS
OUTDOOR
TEMPERATURE
DEFROST CYCLES
(MINUTES)
EXTENDED DEFROST*
CYCLES (MINUTES)
°F DEFROSTING
OPERATION
BETWEEN EACH
DEFROST CYCLE
DEFROSTING
OPERATION
BETWEEN EACH
DEFROST CYCLE
23530620
5 5 20 6 15
-17715712

5
3.TYPICAL INSTALLATIONS
Use the following illustrations as guidelines to help you decide on how the unit will be installed.
All the units should be hung from the joists.
If required, bathroom fans and a range hood may be used to exhaust stale air. Also, for homes with more than one level, we recommend
one exhaust register at the highest level.
There are 3 installation methods: Fully ducted, Central Draw Point and Simplified Installation.
NOTE: An electrical outlet has to be available within 3 feet of the unit.
3.1 FULLY DUCTED SYSTEM (PRIMARILY FOR HOMES WITH RADIANT HOT WATER OR ELECTRIC BASEBOARD HEATING)
VH0081
Stale air coming from the registers located at the highest level of the
house is exhausted outdoors. Fresh air from outdoors is filtered and
supplied by the register located in the lowest liveable level.
Homes with more than one level require at least one exhaust register at
the highest level.
See figure at right.
3.2 CENTRAL DRAW POINT (CONNECTION TO AFORCED AIR SYSTEM)
VH0082
Stale air coming from the registers located at the highest level of the
house is exhausted outdoors. Fresh air from outdoors is filtered and
supplied to the return (plenum) or the supply duct of the forced air unit.
See figure at right.
For this type of installation, it is not essential that the forced air system
blower runs when the unit is in operation, but we recommend it.
NOTE: Home with multiple forced air systems should have one unit on
each system.
3.3 SIMPLIFIED INSTALLATION (CONNECTION TO AFORCED AIR SYSTEM)
VH0082
Stale air is exhausted outdoors. Fresh air from outdoors is filtered and
supplied to the return (plenum) or the supply duct of the forced air unit.
See figure at right.
To avoid cross-contamination and achieve the highest efficiencies, the
forced air system blower must always be ON.
NOTE: Home with multiple forced air systems should have one unit on
each system.

6
4. INSTALLATION
4.1 INSPECT THE CONTENT OF THE BOX
Inspect the exterior of the unit for shipping damage. Ensure that there is no damage to the door, ports, power cord, etc.
4.2 LOCATING THE UNIT
Choose an appropriate location for the unit.
• Within an area of the house where the ambient temperature is kept between
50°F and 104°F.
• Away from living areas (dining room, living room, bedroom), if possible.
• So as to provide easy access to the interior of the unit, for quarterly and annual
maintenance.
• Close to an exterior wall, so as to limit the length of the insulated flexible duct to
and from the unit.
• Away from hot chimneys and other fire hazards.
• Allow for a power source (standard 3-prong grounding outlet).
• Close to a drain (HRV units only). If no drain is close by, use a pail to collect run-off.
Hang the unit with the four chains and springs provided. See illustration at right. VD0242
Make sure the unit is level.
CAUTION
4.3 PLANNING OF THE DUCTWORK
• Keep it simple. Plan for a minimum of bends and joints.
• Keep the length of insulated ducts to a minimum.
• Do not ventilate crawl spaces or cold rooms. Do not attempt to recover the exhaust air from a dryer or a range hood. This
would cause clogging of the filters and recovery module.
• If the house has two floors or more, be sure to plan for at least one exhaust register on the highest lived-in level.
4.4 INSTALLING THE DUCTWORK AND REGISTERS
Stale air exhaust ductwork
• Install the stale air exhaust registers where the contaminants are produced: kitchen, living room, etc. Position the registers as
far from the stairway as possible and in such a way that the air circulates in all the lived-in spaces in the house.
• If a register is installed in the kitchen, it must be located at least 4 feet from the range.
• Install the registers 6 to 12 inches from the ceiling on an interior wall OR install them in the ceiling.
4.4.1 FULLY DUCTED SYSTEM (AS ILLUSTRATED IN SECTION 3.1)
Never install a stale air exhaust register in a closed room where a combustion device operates, such as a
gas furnace, a gas water heater or a fireplace.
WARNING
!
Fresh air distribution ductwork
• Install the fresh air distribution registers in bedrooms, dining rooms, living room and basement.
• Keep in mind that the fresh air registers must be located as far as possible from the stale air registers.
• Install the registers either in the ceiling or high on the walls with air flow directed towards the ceiling. (The cooler air will then
cross the upper part of the room and mix with room air, before descending to occupant’s level.)
• If a register must be floor installed, direct the airflow up the wall.

7
4. INSTALLATION (CONT’D)
4.4 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
4.4.2 CENTRAL DRAW POINT (AS ILLUSTRATED IN SECTION 3.2)
Stale air exhaust ductwork
Same as for Fully Ducted System, described on point 4.4.1
Fresh air distribution ductwork
There are 2 methods for connecting the unit to the furnace/air handler:
When performing duct connections, always use approved tools and materials. Respect all corresponding
laws and safety regulations. Please refer to your local building code.
WARNING
!
When performing duct connections to the furnace supply duct, this duct must be sized to support the
additional airflow produced by the unit. Also, the use of metal duct is highly recommended.
CAUTION
Method 1: Supply side connection
• Cut an opening into the furnace supply duct at least 18 inches from the
furnace/air handler.
• Connect this opening to the Fresh air distribution port of the unit (use metal
duct, see figure at right).
• Make sure the unit duct forms an elbow inside the furnace/air handler ductwork.
• If desired, interlock (synchronize) the furnace/air handler blower operation (see
Section 6 Electrical Connection to the Furnace).
VJ0075
MINIMUM 18”
METAL DUCT
Method 2: Return side connection
• Cut an opening into the furnace return duct not less than 10 feet from the
furnace/air handler (A+B).
• Connect this opening to the Fresh air distribution port of the unit (see figure
at right).
NOTE: For Method 2, it is not essential that the furnace/air handler runs when the
unit is operation, but we recommend it. If desired, interlock (synchronize)
the furnace/air handler blower operation (see Section 6 Electrical
Connection to the Furnace). VJ0076
B
A
A+B = NOT LESS
THAN 10’

4. INSTALLATION (CONT’D)
4.4 INSTALLING THE DUCTWORK AND REGISTERS (CONT’D)
4.4.3 SIMPLIFIED INSTALLATION (AS ILLUSTRATED IN SECTION 3.3)
8
When performing duct connections, always use approved tools and materials. Respect all corresponding
laws and safety regulations. Please refer to your local building code.
WARNING
!
When performing duct connections to the furnace supply duct (Method 1), this duct must be sized to
support the additional airflow produced by the unit. Also, the use of metal duct is highly recommended.
For a Return-Return installation, the furnace blower must be in operation when the unit is in operation.
CAUTION
There are 2 methods for connecting the unit to the furnace/air handler:
Method 1: Supply-Return Connection Method 2: Return-Return Connection
VJ0077
A
B
MINIMUM 18”
METAL DUCT
A+B = NOT LESS
THAN 10’
VJ0078
B
A
A+B = NOT LESS
THAN 10’
MINIMUM 3’
Stale air intake
• Cut an opening into the furnace return duct not less than 10 feet from the furnace/air handler (A+B).
• Connect this opening to the Exhaust air from building port of the unit.
Fresh air distribution
• Same instructions as for Method 1 or Method 2, Section 4.4.2.
For Method 2 (Return-Return), make sure there is a distance of at least 3 feet between the 2 connections to the furnace/air
handler.
If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit
operation! See Section 6 Electrical Connection to the Furnace.
CAUTION
NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the unit operation, but we recommend it.

Insulated flexible ducts
Use the following procedure to connect the insulated flexible ducts to the ports of the unit (Exhaust air to outdoors and Fresh air
from outdoors ports).
All units have those 2 ports equipped with integrated balancing damper. Prior to install the
insulated flexible ducts, ensure these both ports have their damper entirely open (their
adjusment pin (A) must be set vertical, as shown at right).
4. INSTALLATION (CONT’D)
4.5 CONNECTING THE DUCTS TO THE UNIT
9
VJ0033
A
Pull back the insulation to expose the flexible duct.
Attach the flexible duct to the port using tie wrap.
Pull the insulation over the joint and tuck in between the inner and outer rings of the double collar.
Pull down the vapor barrier (shaded part in illustrations below) over the outer ring to cover it completely. Fasten in place the vapor
barrier usingthe port strap includedin unitparts bag).To doso,insert one collarpin throughvaporbarrierand first strap hole,then insert
the other collar pin through vapor barrier and center strap hole and close the loop by inserting the first collar pin in the last strap hole.
If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts.
CAUTION
Make sure the vapor barrier on the insulated ducts does not tear during installation to avoid condensation
within the ducts.
CAUTION
VJ0074
12
34
COLLAR PIN
COLLAR PIN
Non-insulated rigid ducts
Use metal screws and duct tape
to connect the rigid ducts to the
unit ports.
Non-insulated flexible ducts
Use tie wraps to connect the flexible
ducts to the unit ports.
VJ0073
NOTE: All units ports were created to be connected to ducts having a minimum of 4” diameter, but if need be, they can be connected
to bigger sized ducts by using an appropriate transition (e.g.: 4” diameter to 5” diameter transition).

4. INSTALLATION (CONT’D)
4.6 INSTALLING TWO EXTERIOR HOODS
10
VD0028
EXHAUST HOOD
INTAKE HOOD
18”
18”
4” Ø
6’
6’
18”
OPTIONAL
DUCT LOCATION
TAPE AND DUCT TIE
Choose an appropriate location to install the exterior
hoods:
• There must be a minimum distance of 6 feet
between the hoods to avoid cross-contamination
• There must be a minimum distance of 18 inches from
the ground
Make sure the intake hood is at least 6 feet
away from any of the following:
• Dryer exhaust, high efficiency furnace vent,
central vacuum vent
• Gas meter exhaust, gas barbecue-grill
• Any exhaust from a combustion source
• Garbagebinandanyothersourceofcontamination
WARNING
!
Refer to figure at right for connecting insulated ducts to
the exterior hoods. An “Anti-gust intake hood’’ should be
installed in regions where a lot of snow is expected to fall.
4.7 CONNECTING THE DRAIN
A drain tubing (included) must be installed for all HRV units. For ERV units, it is not required, however, it is
recommended for climates where the outside temperature typically remains below -13°F, (over a 24-hour
period) for several days in a row, combined with an indoor humidity of 40% or higher.
CAUTION
VO0190
Connect the plastic tube to the inner drain fitting
located under the unit as shown.
NOTE: For ERV units, remove drain plug outside
the unit prior to install tubing.
VD0240A
± 1”
Make a water trap loop in the tube to prevent the
unit from drawing unpleasant odors from the drain
source. Run the tube to the floor drain or to an
alternative drain pipe or pail.
IMPORTANT
If using a pail to collect water, locate the tube end
approximately 1” from the top of the pail in order to
prevent water from being drawn back up into the unit.
TIE-WRAP

5. CONTROLS
11
All units are equipped with an integrated control located on upper left side of the unit. Plug the unit.
5.1 BOOTING SEQUENCE
The unit booting sequence is similar to a personnal computer boot sequence. Each time the unit is plugged after being unplugged, or
after a power failure, the unit will perform a 30-second booting sequence before starting to operate.
During the booting sequence, the integrated control LED will light GREEN for 5 seconds, and then will turn RED. During this RED light
phase, the unit is checking and resetting the motorized damper position. Once the motorized damper position completely set, the RED
light turns off and the booting sequence is done.
NOTE: No command will be taken until the unit is fully booted.
5.2 INTEGRATED CONTROL
VE0220
2
1
Use the push button (1) to control the unit. The LED (2) will then show on which mode the unit is in.
Refer to table below to see how to operate the unit using its integrated control.
LED COLOR RESULTS
AMBER UNIT IS ON LOW SPEED
GREEN UNIT IS ON HIGH SPEED
NOLIGHT UNIT IS OFF
If a problem occurs during the unit operation, its integrated control LED (2) will blink. The color of the blinking light depends on the
type of error detected. Refer to Section 10 Troubleshooting on page 19 for further details.
NOTE: WHEN USING MAIN CONTROL,THE INTEGRATED CONTROL MUST BE TURNED OFF.
5.3 SETTING EXTENDED DEFROST
These units are factory set to normal defrost. In cold region (outside temperature -17°F and lower), it may be necessary to setup
extended defrost. During the first 2 seconds of booting sequence, while the integrated control LED is GREEN, press on push button
for 3 seconds to set the unit in extended defrost; the LED will blink AMBER to show the unit is in extended defrost mode. After that,
the LED will shut off, then light RED (the unit returns in its booting sequence).

5. CONTROLS (CONT’D)
5.4 ELECTRICAL CONNECTION TO MAIN CONTROL
12
For more convenience, these units can also be controlled using an optional main wall control.
NOTES: 1. The integrated control must be turned OFF to use an optional main control.
2. If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control.
Always disconnect the unit before making any connections. Failure in disconnecting power could result in
electric shock or damage of the wall control or electronic module inside the unit.
WARNING
!
Never install more than one optional main wall control per unit. Make sure that the wires do not short-circuit
betweenthemselvesor bytouchinganyother components onthewallcontrol.Avoid poor wiringconnections.To
reduce electrical interference (noise) potential, do not run wall control wiring next to control contactors or near
light dimming circuits, electrical motors, dwelling/building power or lighting wiring, or power distribution panel.
CAUTION
Use the terminal connector included in the installation kit to perform the electrical
connection for main and optional wall controls. Check if all wires are correctly inserted
in their corresponding holes in the terminal block. (A wire is correctly inserted when its
orange receptacle is lower than another one without wire. On picture at right, wire Ais
correctly inserted, but wire Bis not.)
VE0272
A
B
5.4.3 ELECTRICAL CONNECTION
TO VT4W MAIN WALL CONTROL
NO C NC I OC OL Y R G B
BG
G B
Y
VE0328A
Y
VT4W
MAIN WALL CONTROL
REAR VIEW
5.4.2 ELECTRICAL CONNECTION
TO VT7W MAIN WALL CONTROL
NO C NC I OC OL Y R G B
VE0250
5.4.1 ELECTRICAL CONNECTION
TO VT8W MAIN WALL CONTROL
NO C NC I OC OL Y R G B
VE0181
SMART
SET
MODE
PREF
5.4.4 ELECTRICAL CONNECTION
TO VT6W MAIN WALL CONTROL
NO C NC I OC OL Y R G B
VE0187

5. CONTROLS (CONT’D)
13
VE0221
TERMINAL
CONNECTOR
Once the control(s) connections have been made, insert the terminal connector in the
electrical compartment interface.
6. ELECTRICAL CONNECTION TO THE FURNACE
Never connect a 120-volt AC circuit to the terminals of the furnace interlock (standard wiring). Only use the low
voltage class 2 circuit of the furnace blower control.
WARNING
!
For a furnace connected to a cooling system:
On some older thermostats, energizing the “R” and “G” terminals at the furnace has the effect of energizing “Y” at the thermostat and
thereby turning on the cooling system. If you identify this type of thermostat, you must use the ALTERNATE FURNACE INTERLOCK WIRING.
STANDARD FURNACE INTERLOCK WIRING ALTERNATE FURNACE INTERLOCK WIRING
W R G Y
W
R
G
C
Y
UNIT TERMINAL CONNECTOR
THERMOSTAT
TERMINALS
FOUR
WIRES
TWO WIRES
heating only
FURNACE
24-VOLT
TERMINAL BLOCK TWO WIRES COOLING SYSTEM
NO C NC I OC OL Y R G B
W R G Y
W
R
Y
R
G
Y
C
THERMOSTAT
TERMINAL
4 WIRES
2 WIRES
heating only wiring
nuts
FURNACE
24-VOLT
TERMINAL BLOCK 2 WIRES COOLING SYSTEM
NO
NC
C
UNIT TERMINAL CONNECTOR
NO C NC I OC OL Y R G B
VE0108A
5.5 ELECTRICAL CONNECTION TO OPTIONAL AUXILIARY WALL CONTROLS
NO C NC I OC OL Y R G B
VE0371
59W VB20W or VB60W

7. W IRING DIAGRAMS
14
WARNING
!
• Risk of electric shocks.Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse).A blown fuse indicates an overload or a short-circuit
situation. If the fuse blows, unplug the product and check the polarity and voltage output from the outlet. Replace
the fuse as per the servicing instructions (refer to wiring diagram for proper fuse rating) and verify the product. If
the replaced fuse blows, it may be a short-circuit and the product must be discarded or returned to an authorized
service center for examination and/or repair.
BK
W
G
A1
J6
1
2
J10
1
2
J14
10
9
8
7
6
5
4
3
2
1
12345
J12 J13
ICP
21345
J8
4321
J9
24 V Class 2
9.5 V
Class 2
C1
5 µF
2154321
12
J3
J2 J1
M2 A2
F1
T1
120 VAC
60 Hz
S1
OVERRIDE SWITCH
(OPTIONAL)
FIELD WIRING
REMOTE CONTROL
FURNACE BLOWER
INTERLOCK (OPTIONAL)
DAMPER ELECTRONIC
ASSEMBLY
ELECTRONIC ASSEMBLY
DAMPER MOTOR
3A
3AG TYPE
COLOR CODE
t˚
VE0316A
M
J4-1
J9-3
J6-1 J6-2
J4-2
M
J2-1 J3-1
J3-2J2-2
J12-2
K4
K3
K2
T1
+-
~
~
L INE
N EUTRAL
120 VAC
A2
DAMPER MOTOR
M2
BLOWER MOTOR
M1
C1 M OTOR C APACITOR
F1
J12-1
J10-2 J10-1
J4-3
J9-1
24 VAC
9.5 VAC
J8-4
J8-5 J8-2
J8-1
LOGIC DIAGRAM WIRING DIAGRAM
M1
BL
BR
J4
1
2
3
BK
B
G
R
RGBK
Y
YOL
OC
I
LINE VOLTAGE
CLASS 2 LOW VOLTAGE FACTORY WIRING
CLASS 2 LOW VOLTAGE FIELD WIRING
BLACK
BLUE
BROWN
GREEN
NO CONNECTION
BK
BL
BR
G
NC
ORANGE
PURPLE
RED
WHITE
YELLOW
O
P
R
W
Y
O
O
Y
Y
THERMISTOR
R1
BLOWER
MOTOR
MOTOR
CAPACITOR
nc
nc
BK 120 V
94 V
83 V
78 V
69 V
neutral
BL
P
BR
R
W
R
BR
P
R
BL BL
321
JU1
M H
123
JU1
H M
J9-2
94 VAC 83 VAC
78 VAC
69 VAC
nc nc
Damper system
CPU
K2 K3 K4K1 K5
S1
J11-2 J11-1
7.1 HRV80T AND HRV80S MODELS

7. W IRING DIAGRAMS (CONT'D)
15
WARNING
!
• Risk of electric shocks.Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse).A blown fuse indicates an overload or a short-circuit
situation. If the fuse blows, unplug the product and check the polarity and voltage output from the outlet. Replace
the fuse as per the servicing instructions (refer to wiring diagram for proper fuse rating) and verify the product. If
the replaced fuse blows, it may be a short-circuit and the product must be discarded or returned to an authorized
service center for examination and/or repair.
BK
W
G
A1
J6
1
2
J10
1
2
J14
10
9
8
7
6
5
4
3
2
1
12345
J12 J13
ICP
21345
J8
4321
J9
24 V Class 2
9.5 V
Class 2
C1
5 µF
2154321
12
J3
J2 J1
M2 A2
C2
F1
T1
120 VAC
60 Hz
S1
OVERRIDE SWITCH
(OPTIONAL)
FIELD WIRING
REMOTE CONTROL
FURNACE BLOWER
INTERLOCK (OPTIONAL)
THERMISTOR
DAMPER ELECTRONIC
ASSEMBLY
ELECTRONIC ASSEMBLY
DAMPER MOTOR
3A
3AG TYPE
COLOR CODE
t˚
VE0335A
M
J4-1
J9-3 J6-1 J6-2
J4-2
M
J2-1 J3-1
J3-2J2-2
J12-2
K4
K3
K2
T1
+-
~
~
LINE NEUTRAL
120 VAC
A2
D AMPER M OTOR
B LOWER M OTOR
C1 MOTOR CAPACITOR
CPU
K2 K3 K4
3A
J12-1
J10-2 J10-1
J4-3
J9-1
24 VAC
9.5 VAC
C2 MOTOR SPEED
J8-4
J8-5 J8-2
J8-1
LOGIC DIAGRAM WIRING DIAGRAM
M1 BL
BR
J4
1
2
3
BK
B
G
R
RGBK
Y
YOL
OC
I
LINE VOLTAGE
CLASS 2 LOW VOLTAGE FACTORY WIRING
CLASS 2 LOW VOLTAGE FIELD WIRING
13 µF
BLACK
BLUE
BROWN
GREEN
BK
BL
BR
G
ORANGE
RED
WHITE
YELLOW
O
R
W
Y
O
O
Y
Y
R1
BLOWER
MOTOR
MOTOR
CAPACITOR
K1 K5
S1
J11-2 J11-1
BK
R
W
7.2 ERV70T AND ERV70S MODELS

7. W IRING DIAGRAMS (CONT'D)
16
WARNING
!
• Risk of electric shocks.Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse).A blown fuse indicates an overload or a short-circuit
situation. If the fuse blows, unplug the product and check the polarity and voltage output from the outlet. Replace
the fuse as per the servicing instructions (refer to wiring diagram for proper fuse rating) and verify the product. If
the replaced fuse blows, it may be a short-circuit and the product must be discarded or returned to an authorized
service center for examination and/or repair.
BK
W
G
A1
J6
1
2
J10
1
2
J14
10
9
8
7
6
5
4
3
2
1
12345
J12 J13
ICP
21345
J8
4321
J9
24 V Class 2
9.5 V
Class 2
C1
6 µF
2154321
12
J3
J2 J1
M2 A2
F1
T1
120 VAC
60 Hz
S1
OVERRIDE SWITCH
(OPTIONAL)
FIELD WIRING
REMOTE CONTROL
FURNACE BLOWER
INTERLOCK (OPTIONAL)
DAMPER ELECTRONIC
ASSEMBLY
ELECTRONIC ASSEMBLY
DAMPER MOTOR
3A
3AG TYPE
COLOR CODE
t˚
VE0317A
M
J4-1
J9-3
J6-1 J6-2
J4-2
M
J2-1 J3-1
J3-2J2-2
J12-2
K4
K3
K2
T1
+-
~
~
L INE
N EUTRAL
120 VAC
A2
DAMPER MOTOR
M2
BLOWER MOTOR
M1
C1 M OTOR C APACITOR
F1
J12-1
J10-2 J10-1
J4-3
J9-1
24 VAC
9.5 VAC
J8-4
J8-5 J8-2
J8-1
LOGIC DIAGRAM WIRING DIAGRAM
M1
BL
BR
J4
1
2
3
BK
B
G
R
RGBK
Y
YOL
OC
I
LINE VOLTAGE
CLASS 2 LOW VOLTAGE FACTORY WIRING
CLASS 2 LOW VOLTAGE FIELD WIRING
BLACK
BLUE
BROWN
GREEN
NO CONNECTION
BK
BL
BR
G
NC
ORANGE
PURPLE
RED
WHITE
YELLOW
O
P
R
W
Y
O
O
Y
Y
THERMISTOR
R1
BLOWER
MOTOR
MOTOR
CAPACITOR
nc
nc
BK 120 V
94 V
83 V
78 V
69 V
neutral
BL
P
BR
R
W
R
BR
P
R
BL BL
321
JU1
M H
123
JU1
H M
J9-2
94 VAC 83 VAC
78 VAC
69 VAC
nc nc
Damper system
CPU
K2 K3 K4K1 K5
S1
J11-2 J11-1
Ref.
1
Ref.
1
64 CFM optional low speed
selection can be achieved by
connecting BROWN to RED
(See Ref. 1)
7.3 HRV90T AND HRV90S MODELS

8. BALANCING THE UNIT
8.1 WHAT YOU NEED TO BALANCE THE UNIT
17
• A magnehelic gauge capable of measuring 0 to 0.5 inch of water (0 to 125 Pa) and
2 plastic tubes.
• The balancing chart of the unit, located on the unit door.
VP0009
8.2 PRELIMINARY STAGES TO BALANCE THE UNIT
• Seal all the unit ductwork with tape. Close all windows and doors.
• Turn off all exhaust devices such as range hood, dryer and bathroom fans.
• Make sure the balancing dampers are fully open (their adjusment pin (A) must be set
vertical, see illustration at right).
• Make sure all filters are clean (if it is not the first time the unit is balanced).
8.3 BALANCING PROCEDURE
1. Set the unit to high speed.
NOTE: Make sure that the furnace/air handler blower is ON if the installation is in any way connected to the ductwork of the
cold air return. If not, leave furnace/air handler blower OFF. If the outside temperature is below 32°F, make sure the unit
is not running in defrost while balancing. (By waiting 10 minutes after plugging the unit in, you are assured that the unit
is not in a defrost cycle.)
2. Place the magnehelic gauge on a level surface and adjust it to zero.
3. Connect tubing from gauge to EXHAUST air flow pressure taps (see diagram on unit
door).
Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops
below zero, reverse the tubing connections.
4. Note the CFM value from balancing chart on unit.
5. Repeat steps 3 and 4, but to FRESH air flow pressure taps.
6. Match highest CFM value to lowest by adjusting the balancing damper corresponding
to the highest value. To do so, rotate the adjusment pin.
See example below:
PRESSURE FRESH EXHAUST
IN. W.G. CFM CFM
0.16 47 42
0.18 54 48
0.2 60 55
0.22 66 61
0.24 72 68
0.26 78 74
0.28 84 81
0.3 90 88
EXHAUST
READING
VALUES
FRESH
READING
VALUES
VJ0033
A
VJ0031
In that case, there is 78 CFM in FRESH air and 61 CFM in EXHAUST air. Then, using the adjusment pin, adjust (close) the
FRESH air balancing damper until the FRESH air flow matchs the EXHAUST air flow: 60 CFM (0.2 in. w.g.) with magnehelic
gauge connected to FRESH air flow pressure taps).
7. Secure both dampers in place with a fastening screw (included in the hardware kit).
8. Write the required air flow information on a label and stick it near the unit for future
reference (date, maximum speed air flows, your name, phone number and business
address).
NOTES: 1. Use conversion chart provided with the unit to convert magnehelic gauge
readings to equivalent cfm values.
2. The unit is considered balanced even if there is a difference of ±10 cfm
(or ± 5 l/s or 17 m³/h) between the two air flows.
SCREW
VJ0031
VP0019
FRESH AIR
FLOW
EXHAUST AIR FLOW

9. SERVICE PARTS
18
VL0043
1
2
3
4
5
6
7
8
9
10 11
12
13
* PART NOT SHOWN.
REPLACEMENT PARTS AND REPAIR:
In order to ensure your ventilation unit remains in good working condition,
you must use Broan-NuTone LLC genuine replacement parts only. The
Broan-NuTone LLC replacement parts are specially designed for each
unit and are manufactured to comply with all the applicable certification
standards and maintain a high standard of safety. Any third party
replacement part used may cause serious damage and drastically reduce
the performance level of your unit, which will result in premature failing.
Broan-NuTone LLC recommends to contact a certified service depot for all
replacement parts and repair.
ITEM PART NO.DESCRIPTION HRV80T HRV80S ERV70T ERV70S HRV90T HRV90S
1 SV18854 4” ROUND METAL PORT 222222
2SV19206 ELECTRONIC BOARD (HRV) 1 1 1 1
SV19207 ELECTRONIC BOARD (ERV) 1 1
3SV16042 CAPACITOR 5F 1111
SV61550 CAPACITOR 6 F 11
4SV17244 TRANSFORMER 11
SV62480 1 1 1 1
5 SV19211 CAPACITOR 13F 111111
6 SV19208 FILTER RETAINING WIRES (PAIR) 111111
7 SV18883 CORE FILTERS (PAIR) 111111
8 SV21517 DOOR ASSEMBLY 111111
9SV19199 HEAT RECOVERY CORE 11 11
SV19200 ENERGY RECOVERY CORE 11
10 SV18867 BLOWER ASSEMBLY 1111
SV62176 BLOWER ASSEMBLY 11
11 SV18868 VERTICAL PORTS DAMPER SYSTEM 111
SV18881 HORIZ. PORTS DAMPER SYSTEM* 111
12 SV19212 4” PORTS STRAPS 222222
13 SV18855 4” DOUBLE COLLAR PORT WITH DAMPER 222222
14 SV19213 HARDWARE KIT* 111111
15 SV16416 PCB CONNECTOR* 111111

10. TROUBLESHOOTING
19
Problems Possible causes You should try this
1 The error code E1 is
displayed on VT8W or
VT7W wall control screen.
• The wires may be in reverse position.
• The wires may be broken.
• The wires may have a bad connection.
• Ensure that the color wires have been connected to
their appropriate places.
• Inspect every wire and replace any that are damaged.
• Ensure the wires are correctly connected.
2 There is no outside
temperature displayed on
VT8W wall control screen
__.
• The unit thermistor is defective (the
integrated control LED of the unit must
flash GREEN).
NOTE: At its very start-up or after a power failure, it takes
some minutes before the outside temperature
appears on screen. The shortest delay is
obtained when the wall control is set on MIN or
MAX in VENT Mode.
• Replace the unit damper system.
3 The VT8W or VT7W wall
control screen alternates
between normal display
and E3.
• The VT8W or VT7W wall control
may be defective.
• Replace the VT8W or VT7W wall control.
4 On VT8W wall control, there
is an important difference
between temperature
displayed and
real temperature.
• The unit thermistor is defective.
• The unit damper has been blocked or
broken.
• Replace the unit thermistor.
• Check for the proper operation of the unit damper;
replace if necessary.
5 Unit does not work. • The circuit board may be defective.
• The fuse may be defective.
6 The wall control does not
work.
• Unit integrated control set to low or high
speed (AMBER or GREEN
continuous LED).
• Unit not compatible with control.
• The wires may be in reverse position.
• The wires may be misconnected.
• The wires may be broken.
• Defective wall control.
• Press on the integrated push button until the LED
turns off.
• Check table on page 2 for control compatibility.
• Ensure that the color coded wires have been
connected to their appropriate places.
• Ensure the wires are correctly connected.
• Inspect every wire and replace any that are damaged.
• Replace the wall control.
If the unit does not work properly, reset the unit by unplugging it for one minute and then replug it. If it still not working properly,
refer to table below.
If the integrated control LED of the unit is flashing, this means the unit sensors detected a problem. See the table below to know where
the problem occurs on the unit.
LED Signal Error Type Action Unit Status
LED flashes GREEN Thermistor error Replace damper system. Unit works but will defrost frequently
LED flashes AMBER Damper error Go to point 6 Unit does not work
NO C NC I OC OL Y R G B
VE0097
• Unplugtheunit.Disconnect
the main control and the
optional(s) control(s) (if
need be). Jump Gand B
terminals.Plugtheunit backandwaitabout10seconds.
If the motors run on high speed and the damper
opens, the circuit board is not defective.
• Checkif fuse F1 (locatedonPCB) isblown.In thatcase,
replace fuse F1 as per wiring diagram specifications.

10. TROUBLESHOOTING (CONT’D)
20
Problems Possible causes You should try this
7 The damper system
does not work
(AMBER error code).
At power up, no RED LED. • See point 5.
At power up, LED lights RED and
there is a clicking sound coming from
electrical compartment, but damper
does not move:
• Ice or other things hindering the
damper movement.
• J12 unconnected or bad contact.
• Wrong connection of J8.
• The transformer may be defective
(no 24 VAC between J8-1 and J8-2).
• The damper actuator may be defective.
• Remove ice or hindering elements.
• Check J12 connection (both harness side and board
side).
• Check J8 connection.
• With unit powered and J9 connected, check if there
is about 20-24 VAC between transformer connector
J8-1 and J8-2 (ORANGE wires). If no, change the
transformer.
• Replace the damper system.
Damper moves but does not stop when
supposed to:
• Damper motor turns on reverse side.
• Bad connection of J12 connector.
• Damper PCB defective or damper motor
stripped gear.
• The main PCB is defective.
• Facing the damper motor shaft, the motor should
turn counterclockwise. If not, replace the damper
system.
• Check J12 connection (both harness side and
board side).
• Replace the damper system.
• Replace the main PCB.
8 Optional auxiliary control
does not work OR
its indicator light
does not stay on.
• The wires may be in reverse position.
• The wires may be misconnected.
• The wires may be broken.
• The auxiliary control may be defective.
• Ensure that the color coded wires have been
connected to their appropriate places.
• Ensure the wires are correctly connected.
• Inspect every wire and replace any that is damaged.
If wires are hidden into walls, test the control using a
shorter wire.
9 The blower motor does not
work.
• The fuse may be defective.
• The motor or capacitor may be defective.
NOTE: The unit must be unplugged to
perform this test.
• CheckiffuseF1 (locatedonPCB)isblown.Inthat case,
replace fuse F1 as per wiring diagram specifications.
• Using a multimeter, check the ohms value on motor
connector.For BLUE and BLACK motor wires, the right
value is ± 68 ohms. For BLUE and BROWN motor
wires, the right value is ± 58 ohms. For BROWN and
BLACK motor wires, the right value is ± 126 ohms. If
theohmsvaluesarethesame,themotorisnotdefective.
Replace the motor capacitor.
10 The integrated control push
button does not work.
• The 30-second boot sequence is not
completed.
• See Section 5.1 Booting Sequence.
• Jump the OL and OC
terminals. If the unit
switch to high speed,
remove the push button
and test it right beside the unit using another shorter
wire. If it works here, change the wire. If it doesn’t,
change the auxiliary control.
NO C NC I OC OL Y R G B
VE0098