HRV120S - Air Conditioning BROAN - Free user manual and instructions

Product Type	Heat Recovery Ventilator (HRV)
Brand	Broan
Model	HRV120S
Airflow Capacity	120 CFM (cubic feet per minute)
Dimensions (H x W x D)	24 x 20 x 36 inches
Weight	80 lbs
Power Supply	120V AC, 60 Hz
Power Consumption	120 W (typical operation)
Heat Recovery Core Material	Enthalpy (energy recovery) or aluminum
Installation Type	Ceiling or wall mount
Duct Connection	6-inch round duct
Controls	Wall-mounted speed control (low, medium, high)
Filter Type	Washable aluminum mesh filter
Filter Maintenance	Clean every 3-6 months
Core Maintenance	Vacuum annually
Safety Features	Thermal overload protection, galvanized steel cabinet
Energy Efficiency	Up to 75% heat recovery efficiency
Warranty	5 years on motor, 1 year on parts
Spare Parts Availability	Motor, core, filters, controls available
Repairability	Modular design with accessible components

Frequently Asked Questions - HRV120S BROAN

How does the Broan HRV120S work?

The Broan HRV120S is a heat recovery ventilator that exchanges stale indoor air with fresh outdoor air while recovering heat from the exhaust air to preheat incoming air, improving energy efficiency.

What are the dimensions and weight of the HRV120S?

The unit measures approximately 24 x 20 x 36 inches and weighs about 80 lbs.

How often should I clean the filters?

Filters should be cleaned every 3 to 6 months depending on air quality. Wash the aluminum mesh filter with mild soap and water, let it dry completely before reinstalling.

Can I install the HRV120S myself?

While the unit is designed for easy installation, it is recommended to hire a qualified HVAC professional to ensure proper ducting, balancing, and electrical connections.

What is the noise level of this unit?

The noise level is approximately 45-55 dB depending on speed setting, which is comparable to a quiet conversation.

Does the HRV120S help with indoor air quality?

Yes, it continuously exhausts stale air and pollutants while bringing in filtered fresh air, reducing humidity, odors, and indoor contaminants.

What type of ductwork is required?

The HRV120S uses 6-inch round ductwork for both exhaust and fresh air connections. Flexible or rigid ducts may be used.

How do I balance the airflow?

The unit has adjustable dampers and a balancing port. Use a manometer to measure pressure differentials and adjust dampers to achieve equal supply and exhaust airflow.

What is the warranty coverage?

Broan provides a 5-year warranty on the motor and a 1-year warranty on all other parts. Proof of purchase is required.

Where can I find replacement parts?

Replacement parts such as the heat recovery core, motor, filters, and control board are available through Broan authorized dealers or online.

USER MANUAL HRV120S BROAN

Exterior view of a BROSAN industrial device with three cylindrical ports and mounting tabs (no readable text or symbols beyond branding)

ERV and HRV with top ports

ERV120T*

HRV120T*

and ERV110T

Exterior view of a BROSAN air purifier unit (no visible text or symbols on body)

ERV and HRV with side ports

ERV120S*

HRV120S*

and ERV110S

*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 USE ONLY △

READ AND SAVE THESE INSTRUCTIONS

Broan-NuTone LLC; Hartford, Wisconsin www.broan-nutone.com 800-558-1711

REGISTER YOUR PRODUCT ONLINE AT: www.broan-nutone.com/register

For additional information - visit www.broan-nutone.com

Because of the large amount of models covered by 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:

WARNING

Identifies an instruction which, if not followed, might cause serious personal injuries including possibility of death.

CAUTION

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.

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. Before servicing or cleaning the unit, disconnect power cord from electrical outlet.
3. This unit is not designed to provide combustion and/or dilution air for fuel-burning appliances.
4. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
5. Do not use this unit with any solid-state speed control device other than following wall control:

MAIN CONTROLS	AUXILIARY CONTROLS
VT8W, VT7W, VT4W OR VT6W	VB60W, VB20W AND 59W

1. 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.
2. Do not install in a cooking area or connect directly to any appliances.
3. Do not use to exhaust hazardous or explosive materials and vapors.
4. When performing installation, servicing or cleaning these units, it is recommended to wear safety glasses and gloves.
5. Due to the weight of the unit, two installers are recommended to perform installation.
6. When applicable local regulation comprise more restrictive installation and/or certification requirements, the aforementioned requirements prevail on those of this document and the installer agrees to conform to these at his own expense.

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 outdoors – 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 local and national codes that are applicable.
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. SERVICE PARTS 4-5
2. TYPICAL INSTALLATIONS 6-7

2.1 FULLY DUCTED SYSTEM....6

2.2 EQTRAL DRAW POINT 6
2.3 0PLIFIED INSTALLATION....6
2.4 TAC INSTALLATION (FOR ERV UNITS ONLY)....7

1. INSTALLATION 7-11

3.1 INSPECT THE CONTENT OF THE BOX....8
3.2 dCATING THE UNIT 8
3.3 Nut PREPARATION 8
3.4 DW TO HANG THE UNIT 9
3.5 LANNING OF THE DUCTWORK....9
3.6 NSTALLING THE DUCTWORK AND REGISTERS 9-11
3.7 CONNECTING THE DUCTS TO THE UNIT 10
3.8 NSTALLING 2 EXTERIOR HOODS....11
3.9 N ^ST ALLING THE TANDEM ^ TRANSITION KIT....11

1. CONTROLS 12-14

4.1 INTEGRATED CONTROL....12
4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS....12

1. ELECTRICAL CONNECTION TO THE FURNACE ....14
2. WIRING DIAGRAMS 15-16
3. BALANCING THE UNIT....17
4. CONNECTING THE DRAIN (HRV UNITS ONLY)....18
5. TROUBLESHOOTING.... 19-21

No.	DESCRIPTION	PART No.	ERV110S SIDE PORTS	ERV110T TOP PORTS	ERV120S SIDE PORTS	HRV120S SIDE PORTS	HRV120T TOP PORTS	ERV120T TOP PORTS
1	OVAL PORT (FITS 5" DIAMETER DUCTS)	SV16040	1	1	1	1	1	1
2	DOOR LATCH WITH SCREWS	SV16035	2	2	2	2	2	2
3	OVAL PORT WITH INTEGRATED BALANCING DAMPER	SV16041	2	2	2	2	2	2
4	MOTOR & WHEEL ASSEMBLY (5 μF MOTOR CAPACITOR AND INLET RING INCLUDED)	SV18301 2	2 2 2 2 2
5	CAPACITOR 5 μF (2) SV16042 2 2 1 1 1 1
6	CAPACITOR 18 μF SV61127 1 1 1 1 1 1
7	ELECTRONIC BOARD	SV16038 1	1 1	N/A	N/A	1
		SV62257	N/A	N/A	N/A	1	1	N/A
8	E Foam FILTER (2)	SV16031	2	2	1	N/A	N/A	1
9	ERV CORE (WITH 2 FILTERS)	SV16037	1	1	1	N/A	N/A	1
10	DRAIN CONNECTOR KIT	SV03203	N/A	N/A	N/A	1	1	N/A
11	DOOR ASSEMBLY	SV16096	1	1	1	1	1	1
12	BLUE HRV CORE (WITH 2 FILTERS)	SV18300	N/A	N/A	N/A	1	1	N/A
13	HRV FOAM FILTER	SV16032	N/A	N/A	N/A	1	1	N/A
14	MOTORIZED DAMPER PORT ASSEMBLY	SV16029	1	1	1	1	1	1
15*	ES TRANSFORMER	SV18302	1	1	1	1	1	1
16*	GREEN TERMINAL BLOCK	SV16416	1	1	1	1	1	1

* Not shown.
In order to ensure your ventilation unit remains in good working condition, you must use Broan genuine replacement parts only. The Broan genuine 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. Also, Broan recommends to contact a certified service depot for all replacement parts and repairs.

REPLACEMENT PARTS AND REPAIR

2. TYPICAL INSTALLATIONS

Installations may vary according to the type of unit and the ports configuration (top or sides). 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.

In every case, bathroom fans and a range hood should 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.

2.1 FULLY DUCTED SYSTEM (PRIMARILY FOR HOMES WITH RADIANT HOT WATER OR ELECTRIC BASEBOARD HEATING)

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.

Architectural floor plan showing room layouts and equipment placement (no text or labels)

2.2 CENTRAL DRAW POINT (CONNECTION TO A FORCED AIR SYSTEM)

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.

Architectural floor plan showing room layouts and equipment (no text or labels)

2.3 SIMPLIFIED INSTALLATION (CONNECTION TO A FORCED AIR SYSTEM)

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.

Architectural line drawing of a multi-story building interior with furniture and equipment (no text or symbols)

2.4 ATTIC INSTALLATION (FOR ERV UNITS ONLY)

All 3 types of installations can be used in the attic (Fully ducted system, Central Draw Point or Simplified). The example shown below is a Simplified installation (connection to a forced air system).

NOTE: To get the most of your ERV unit, the ambient temperature around the unit should be conditioned. If the unit has to be installed in an unconditioned space, the heat gains or losses from the unit and the ducts could increase the operation costs of the unit.

CAUTION

• Due to the potential temperature difference between the attic and the rest of the house, all unit ducts must be insulated.
• The attic temperature must always be above 32^ and under 149^ .

Stale air is exhausted outdoors. Fresh air from outdoors is filtered and supplied to the return (plenum) 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 1 unit on each system.

Pure technical diagram of a mechanical or electrical component with no visible text, numbers, or symbols.

3. INSTALLATION

3.1 INSPECT THE CONTENTS OF THE BOX

- Inspect the exterior of the unit for shipping damage. Ensure that there is no damage to the door, door latches, power cord, etc.

- Remove and discard both transport brackets (A) and open the door. Discard the styrofoam fillers (only in ERV units) and remove the hardware kit from the unit. Inspect the interior of the unit for damage. Ensure that heat or energy recovery core, core filters, insulation, dampers, etc. are all intact.

3.2 LOCATING THE UNIT

Choose an appropriate location for the unit.

- Within an area of the house where the ambient temperature is kept between 65^ and 104^ .

• 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).
• For HRV units ONLY: Close to a drain. If no drain is close by, use a pail to collect run-off.

3.3 UNIT PREPARATION

All these units are equipped with 2 ports having integrated balancing damper. Turn the thumb screw (B) clockwise to manually open and adjust the damper (C). Set both Fresh air to building port and Exhaust air to outdoors port to wide open position.

HRV units: Set the Fresh air to building port to wide open position, and adjust the Exhaust air to outdoors port to 3rd notch.

NOTE: If the unit needs to be balanced, adjust the damper of the Exhaust air to outdoors port to wide open position. See Section 7.

ERV units: Set both Fresh air to building port and Exhaust air to outdoors port to wide open position.

Port with integrated balancing damper - Top view

3.4 HOW TO HANG THE UNIT

Hang the unit with the 4 chains, hooks and springs provided.

CAUTION

Make sure the unit is level.

Mechanical linkage system with chain and spring components (no text or symbols visible)

Technical line drawing of a mechanical device with two hanging rods and a base unit (no text or symbols)

If there is not enough space on top of the unit, slightly bend the hooks and install them lower on the unit. See figure at right.

Mechanical assembly diagram showing a device with mounting brackets and a close-up inset of a bracket (no text or symbols)

3.5 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.

3.6 INSTALLING THE DUCTWORK AND REGISTERS

WARNING

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.

3.6.1 FULLY DUCTED SYSTEM (AS ILLUSTRATED IN SECTION 2.1)

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.

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 in the ceiling OR 6 to 12 inches from the ceiling on an interior wall. The duct length should be at least 15'. (The fresh air will then flow through the room and mix with room air, ensuring a continuous renewed airflow.)
- If a register must be floor installed, direct the airflow up the wall.

3. INSTALLATION (CONT'D)

3.6 INSTALLING THE DUCTWORK AND REGISTERS (CONT'D)

3.6.2 SIMPLIFIED INSTALLATION (AS ILLUSTRATED IN SECTION 2.3)

WARNING

When performing duct connections, always use approved tools and materials. Respect all corresponding laws and/or safety regulations. Please refer to your local building code.

CAUTION

When performing duct connections to the furnace supply duct, this duct must be sized to support the additional airflow produced by the HRV/ERV. Also, use a steel duct. For a Return-Return installation, the furnace blower must be in operation when the HRV/ERV is in operation.

There are 2 methods for connecting the unit to the furnace/air handler:

Method 1: Supply-return connection Method 2: Return-return

Stale air intake:

• Cut an opening into the furnace/air handler 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 HRV/ERV.

Fresh air distribution:

- Same instructions as for Method 1 or Method 2, Section 3.6.2.

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.

NOTE: For Method 1, it is not essential to synchronize the furnace blower operation with the unit operation, but we recommend it.

CAUTION

If using Method 2, make sure the furnace/air handler blower operation is synchronized with the unit operation! See Section 5.

3.7 CONNECTING THE DUCTS TO THE UNIT

NOTE: All units ports were created to be connected to ducts having a minimum of 5" diameter, but if need be, they can be connected to bigger sized ducts by using an appropriate transition (e.g.: 5" diameter to 6" diameter transition).

Insulated flexible ducts:

CAUTION

Make sure the balancing dampers are set to wide open position before connecting the ducts to the ports.

All units have both Fresh air to building and Exhaust air to outdoors ports equipped with integrated balancing damper. Prior to install the insulated flexible ducts on, ensure these both ports have their dampers set to wide open position (See Section 3.3)

CAUTION

If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts.

Use the following procedure for connecting the insulated flexible ducts to the port of the unit (Exhaust air to outdoors and Fresh air from outdoors ports).

① Pull back the insulation to expose the flexible duct.
② Attach the flexible duct to the port using tie wrap.
③ Pull the insulation over the joint and tuck in between the inner and outer rings of the double collar, then pull down the vapor barrier (shaded part in illustrations below) over the insulation and over the outer ring of double collar.
4 Apply duct tape to the joint making an airtight seal. Avoid compressing the insulation when pulling the tape tightly around the joint. Compressed insulation loses its R value and causes water dripping due to condensation on the exterior surface of the duct.

CAUTION

Make sure the vapor barrier on the insulated ducts does not tear during installation to avoid condensation within the ducts.

1

Technical diagram of a mechanical device with a hand holding a threaded component (no text or symbols present)

2

Technical line drawing of a mechanical device with no visible text or symbols

3

4

Technical line drawing of a mechanical device with no visible text or symbols

Rigid ducts:

CAUTION

Do not use screws to connect the rigid ducts to the ports.

Use a small length (6" lenght) of flexible duct to connect the rigid duct to the ports in order to avoid vibration transmissions. Use tie-wraps to perform connections, then seal with duct tape.

3.8 INSTALLING 2 EXTERIOR HOODS

Choose an appropriate location to install the exterior hoods:

• There must be a inimum distance of 6' between the hoods to avoid cross-contamination
• There must be a minimum distance of 18" from the ground

WARNING

Make sure the intake hood is at least 6 feet (1.8 m) 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
  • Garbage bin and any other source of contamination

Refer to figure below 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.

3.9 INSTALLING THE TANDEM TRANSITION\* KIT

If desired, a Tandem transition kit can be used instead of 2 exterior hoods; but take in account this device will generate additional 0.23 in. w.g. static pressure.

The joist opening needed to install the Tandem ^ transition must be 9 ^3/4 " minimum. The maximum height of the Tandem transition is 8 ^3/4 ".

To connect the insulated flexible ducts to the Tandem transition (Exhaust air to outdoors and Fresh air from outdoors), follow the instructions included with the Tandem transition kit (part no. VTYIK1).

*Patented.

Technical line drawing of a tandem transition kit (no text or symbols on the diagram itself)

4.1 INTEGRATED CONTROL

All units are equipped with an integrated control, located under the unit, in front of the electrical compartment. Use the push button (1) to control the unit. The LED (2) will then shows on which mode the unit is in. Refer to table below.

LED COLOR RESULTS
AMBER	UNIT IS ON LOW SPEED
GREEN	UNIT IS ON HIGH SPEED
NO LIGHT	UNIT IS OFF OR CONTROLLED BY A MAIN CONTROL

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 8B, TROUBLESHOOTING on page 21 for further details.

4.1.1 OOT SEQUENCE

The unit boot sequence is similar to a personal 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 or AMBER for 5 seconds, and then will shut off for 2 seconds. After that, the LED will light RED for the rest of the booting sequence. 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.

4.1.2 S ETTING EXTENDED DEFROST

These units are factory set to normal defrost. In cold region (outdoor 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).

4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS

For more convenience, this unit 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.

1. If an optional auxiliary control is used, if activated, this auxiliary control will override the optional main control.

WARNING

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.

CAUTION

Never install more than one optional main wall control per unit. Make sure that the wires do not short-circuit between themselves or by touching any other components on the wall control. Avoid poor wiring connections. 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.

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 illustration at right, wire A is correctly inserted, but not wire B.)

Splice back the end of the cable to access the 4 wires. Strip the end of each wire. Connect each wire to its corresponding terminal: YELLOW wire to "Y", RED wire to "R", GREEN wire to "G" and BLACK wire to "B". Check if all wires are correctly inserted in their corresponding holes in the terminal block.

Connect the auxiliary control cable, if installed (not shown).

4.2 ELECTRICAL CONNECTION TO OPTIONAL WALL CONTROLS (CONT'D)

4.2.1 ELECTRICAL CONNECTION TO VT8W MAIN WALL CONTROL

4.2.2 ELECTRICAL CONNECTION TO VT7W MAIN WALL CONTROL

4.2.3 ELECTRICAL CONNECTION TO VT4W MAIN WALL CONTROL

4.2.4 ELECTRICAL CONNECTION TO VT6W MAIN WALL CONTROL

4.2.4 ELECTRICAL CONNECTION TO OPTIONAL AUXILIARY WALL CONTROLS

Once the wall control(s) connections have been made, insert the terminal connector in the bottom of the unit, on the electrical compartment front face.

WARNING

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.

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

graph TD
    A["THERMOSTAT TERMINALS"] --> B["FURNACE 24-VOLT TERMINAL BLOCK"]
    B --> C["TWO WIRE S"]
    B --> D["NO C"]
    B --> E["NO I"]
    B --> F["OCO Y"]
    B --> G["FC G"]
    B --> H["COOLING SYSTEM"]
    I["FOUR WIRES"] --> J["W R G"]
    K["TWO WIRES heating only"] --> L["R"]
    M["UNIT TERMINAL CONNECTOR"] --> N["NO C"]
    O["UNIT TERMINAL CONNECTOR"] --> P["NO I"]
    Q["UNIT TERMINAL CONNECTOR"] --> R["OCO Y"]
    S["UNIT TERMINAL CONNECTOR"] --> T["FC G"]

VE0108A

ALTERNATE FURNACE INTERLOCK WIRING

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 from the outlet. Discontinue using the unit and contact technical support.

ERV110T AND ERV110S

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 from the outlet. Discontinue using the unit and contact technical support.

ERV120T, ERV120S, HRV120T AND HRV120S

To avoid balancing, the difference between stale air ducts total length and fresh air ducts total length must not exceed 50 ft. However, even if the stale air ducts and fresh air ducts lengths are almost equal, your local building codes may require balancing the unit.

If the unit does not need to be balanced, shut all the pressure taps (located on the unit door) with the small plastic plugs included in the hardware kit.

7.1 WHAT YOU NEED TO BALANCE THE UNIT

• A magnehelic gauge capable of measuring 0 to 0.5 inch of water (0 to 125 Pa) and 2 plastic tubes.
• The balancing chart located on the unit door.

Line drawing of a pressure gauge with tubing and a small object inside (no text or symbols)

7.2 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 integrated balancing dampers are fully open. Turn the thumb screw (A) clockwise to manually open the dampers. Both are located on the Exhaust air to outdoors port and on Fresh air to building port.

- Make sure all filters are clean (if it is not the first time you balance the unit).

Port with integrated balancing damper - Top view

7.3 BALANCING PROCEDURE

1. Set the unit to high speed.

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 outdoor 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.)

1. Place the magnehelic gauge on a level surface and adjust it to zero.
2. Connect tubing from gauge to exhaust air flow pressure taps (see diagram at right).

Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops below zero, reverse the tubing connections.

graph TD
    A["High"] --> B["FRESH AIR FLOW"]
    B --> C["EXHAUST AIR FLOW"]
    C --> D["High"]
    D --> E["FRESH AIR FLOW"]
    E --> F["LOW"]
    F --> G["BALANCING CHART"]
    style A fill:#f9f,stroke:#333
    style D fill:#f9f,stroke:#333
    style G fill:#f9f,stroke:#333

NOTE: It is suggested to start with the exhaust air flow reading because the exhaust has typically more restriction than the fresh air, especially in cases of fully ducted installations or source point ventilation. Place the magnehelic gauge upright and level. Record equivalent air flow of the reading according to the balancing chart.

1. Move tubing to fresh air flow pressure taps (see diagram). Adjust the fresh air balancing damper until the fresh air flow is approximately the same as the exhaust air flow. If fresh air flow is less than exhaust air flow, then go back and adjust the exhaust balancing damper to equal the fresh air flow.
2. Secure both dampers thumb screw in place with tape.
3. 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).

NOTE: The unit is considered balanced even if there is a difference of ±10 cfm (or ±5 l/s) between the two air flows.

From the inner side of the unit door, using the provided drain tube, punch out both drain holes (A).

In order to keep the drain pan intact, hand tighten the 2 plastic drain fittings to the unit door using the gaskets and nuts as shown.

Technical line drawing of a curved mechanical component or tool (no text or symbols)

Cut 2 sections of plastic tubing, about 12" long and attach them to each drain fitting. Join the 2 short sections to the "T" junction and main tube as shown.

Make a water trap loop in the tube to prevent the unit from drawing unpleasant odors from the drain source. Make sure this loop is situated BELOW the "T" as shown. This will prevent water from being drawn back up into the unit in case of negative pressure. Run the tube to the floor drain or to an alternative drain pipe or pail. Be sure there is a slight slope for the run-off.

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.

WARNING

Risk of electric shocks. Electronic board connections must be checked by qualified personnel only.

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 the entire port assembly (fresh air from outdoors port).			Unit works but will defrost frequently.
LED flashes AMBER Damper error Go to point 7. Unit does not work.
LED flashes RED • The door is open and the unit is not unplugged. • Exhaust motor error.		• Put a magnet over the door switch or close the door and press once on the integrated control push button to reset the unit. • Go to point 8.	Unit does not work.

	PROBLEMS	POSSIBLE CAUSES	YOU SOULD TRY THIS
1	The error code E1 is displayed on VT8W or VT7W wall control screen.	Unit not compatible with control.The wires may be in reverse position.The wires may be misconnected.The wires may be broken.	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 is damaged. If wires are hidden into walls, test the control using a shorter wire.
2	There is no outdoor temperature displayed on VT8W wall control screen—.	RED wire in control cable damaged or misconnected.	NOTE: At its very start-up or after a power failure, it takes some minutes before the outdoor temperature appears on screen. The delay duration depends on which operation mode the wall control is set. The shortest delay is obtained when the wall control is set on MIN or MAX in VENT Mode.Ensure the RED wire is not damaged and properly connected.
3	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	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.

1. TROUBLESHOOTING (CONT'D)

	PROBLEMS	POSSIBLE CAUSES	YOU SOULD TRY THIS
5	Unit does not work (LED not lit on power up).	Unit is unplugged.No power to power outlet.The fuse may be defective.J10, J9, or J8 connector(s) may be unplugged.The transformer may be defective (no 9.5 VAC between J8-4 and J8-5).The PCB may be defective.	Make sure the unit is plugged.Test the power outlet with another electrical device (e.g.: a lamp). If it does not work, call an electrician.Unplug the product from the outlet. Check if fuse F1 (located on the PCB) is blown. In that case, discontinue using the unit and contact technical support.Check the connection of J10, J9, and J8 connector(s).With unit powered and J9 connected, check if there is about 9.5 VAC between transformer connector J8-4 and J8-5 (YELLOW wires). If no, change the transformer.Unplug the unit. Disconnect the main control and the auxiliary control(s) (if need be). Jump G and B terminals. VE0097Plug the unit back and wait about 10 seconds. If the motors run on high speed and the damper opens, the circuit board is not defective.
6	Auxiliary control does not work.	The wires may be in reverse position.The wires may be misconnected.The wires may be broken.The VB60W, VB20W or 59W button 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.Jump the OL and OC terminals. If the unit switch to high speed, remove the auxiliary button and test it right VE0098beside the unit using another shorter wire. If it works here, change the wire. If it doesn't, change the auxiliary control.
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 (entire port assembly).
		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.

1. TROUBLESHOOTING (CONT'D)

	PROBLEMS	POSSIBLE CAUSES	YOU SOULD TRY THIS
8	A. The supply motor does not work, but exhaust motor works.	The supply motor may be defective.The supply motor capacitor or the PCB may be defective.	Plug supply motor to J5 connector and exhaust motor to J4 connector. If the integrated control LED flashes RED, the supply motor is defective. If exhaust motor works, plug back supply motor to J4 connector and exhaust motor to J5 connector, then check for supply motor capacitor validity.Plug supply motor capacitor to J7 connector and exhaust motor capacitor to J6 connector. If the integrated control LED flashes RED, the supply motor capacitor is defective. If there is no change, the PCB is defective.
	B. The integrated control LED flashes RED.	The exhaust motor may be defective.The exhaust motor capacitor may be defective.Tranformer wire(s) bad connection.The transformer or the PCB may be defective.	Plug exhaust motor to J4 connector and supply motor to J5 connector. If supply motor works but exhaust motor does not, exhaust motor is defective. If exhaust motor works, plug back supply motor to J4 connector and exhaust motor to J5 connector, then check for exhaust motor capacitor validity.Plug exhaust motor capacitor to J6 connector and exhaust motor capacitor to J7 connector. If exhaust motor works but supply motor does not, the exhaust motor capacitor is defective. If there is no change, check validity of transformer or PCB.Check J8 and J9 connectors, as well as BLUE and RED wire connections from J9.Move JU1 jumper from pins 2 and 1 to pins 2 and 3. Set the unit on high speed. If exhaust motor works, the transformer is defective. If it still does not, change the PCB.

NOTES

BROAN®

Exterior view of a BROSAN air purifier unit (no signage or text beyond branding)

Exterior view of a large industrial device labeled 'BROAN' with visible branding and mounting brackets (no additional text or symbols)

ERV y HRV con aberturas laterales ERV120S* HRV120S* y ERV110S

N.°	DESCRIPCIÓN N.° DE PIEZA		ERV110S ABERTURAS LATERALES	ERV110T ABERTURAS EN LA PARTE SUPERIOR	ERV120S ABERTURAS LATERALES	HRV120S ABERTURAS LATERALES	HRV120T ABERTURAS EN LA PARTE SUPERIOR	ERV120T ABERTURAS EN LA PARTE SUPERIOR
1	ABERTURA OVALADA (APROPRIADA CON TUBO DE 5" DE DIÁMETRO)	SV16040	1	1	1	1	1	1
2	PESTILLO DE PUERTA CON TORNILLOS	SV16035	2	2	2	2	2	2
3	ABERTURA OVALADA CON REGISTRO DE EQUILIBRO INTEGRADO	SV16041	2	2	2	2	2	2
4	MOTOR Y RUEDA (CON LE CONDENSADOR DE MOTOR DE 5 μF Y LA ANILLA DE ADMISIÓN)	SV18301 2	2 2 2 2 2
5	C ONDENSADOR 5 μF (2) SV16042 2 2 1 1 1 1
6	CONDENSADOR 18 μF	SV61127	1	1	1	1	1	1
7	TABLERO DE CIRCUITOS ELECTRONICOS	SV16038	1	1	1	No PROCEDE	No PROCEDE	1
		SV62257	No PROCEDE	No PROCEDE	No PROCEDE	1	1	No PROCEDE
8	FILTROS DE ESPUMA DE ERV (2)	SV16031	2	2	1	No PROCEDE	No PROCEDE	1
9	UNIDAD CENTRAL DEL ERV (CON 2 FILTROS DE ESPUMA)	SV16037	1	1	1	No PROCEDE	No PROCEDE	1
10	CONJUNTO PAR LA CONEXIÓN DEL DESAGÜE	SV03203	No PROCEDE	No PROCEDE	No PROCEDE	1	1	No PROCEDE
11	CONJUNTO DE LA PUERTA	SV16096	1	1	1	1	1	1
12	UNIDAD CENTRAL DEL HRV AZUL (CON 2 FILTROS DE ESPUMA)	SV18300	No PROCEDE	No PROCEDE	No PROCEDE	1	1	No PROCEDE
13	FILTROS DE ESPUMA DE HRV	SV16032	No PROCEDE	No PROCEDE	No PROCEDE	1	1	No PROCEDE
14	ABERTURA DE REGISTRO MOTORIZADO	SV16029	1	1	1	1	1	1
15*	TRANSFORMADOR ES	SV18302	1	1	1	1	1	1
16*	CONECTOR DE TERMINALES VERDE	SV16416	1	1	1	1	1	1

* No SE MUESTRA.

Architectural floor plan showing room layouts, ventilation ducts, and equipment placement (no text or labels)

Architectural floor plan showing room layouts and equipment (no text or labels)

Architectural line drawing of a multi-story building interior with furniture and equipment (no text or symbols)

Pure electrical circuit lines without any symbols

3. INSTALACIÓN

3.1 EXAMEN DEL CONTENIDO DE LA CAJA

Mechanical linkage system with chain and spring components (no text or symbols visible)

Technical line drawing of a mechanical device with two hanging rods and a central box, no text or symbols present.

Mechanical assembly diagram showing a device with mounting brackets and a close-up inset of a bracket (no text or symbols)

Technical illustration of a mechanical assembly with a hand holding a light bulb (no text or symbols present)

2

Technical line drawing of a mechanical device with no visible text or symbols

3

Diagram of a hand operating a device with a directional arrow indicating left motion (no text or symbols present)

4

Technical line drawing of a mechanical device with no visible text or symbols

VJ0120

Tubos rígidos:

CUIDADO

4.2.1 CONEXIÓN ELÉCTRICA CON UN CONTROL DE PARED PRINCIPAL VT4W

4.2.4 CONEXIÓN ELÉCTRICA CON UN CONTROL DE PARED PRINCIPAL VT6W

ADVERTENCIA

Line drawing of a pressure gauge with tubing and a small component, no text or symbols present

7.2 ETAPAS PRELIMINARES PARA EQUILIBRAR EL APARATO

Technical line drawing of a curved mechanical component or tool (no text or symbols)