Broan User and Installer Manual

Consumer Information

To ensure quiet operation of the H/ERV, each product model must be installed using sound attenuation techniques appropriate for the installation.

The way your heat/energy-recovery ventilator is installed can make a significant difference to the electrical energy you use. To minimize the electricity use of the heat/energy-recovery ventilator, a stand-alone fully ducted installation is recommended. If you choose a simplified installation that operates your furnace air handler for room-to-room ventilation, an electrically efficient furnace that has an electronically commutated (EC) variable speed blower motor will minimize your electrical energy consumption and operating cost.

Installation of a user-accessible control with your product model will improve comfort and may significantly reduce the product model's energy use.

1. Technical Data

1.1 Air Distribution (Normal Operation)

Diagram illustrating fresh air intake from outdoors and supply to building, and stale air exhaust from building to outdoors. Another diagram shows stale air intake from building and fresh air supply to outdoors.

Note: The dimensions, performance charts and specifications are listed on the specification sheets of the unit. Visit our website at Broan-NuTone.com.

2. Installation

▲ WARNING The wearing of safety glasses and gloves is recommended when installing, maintaining or cleaning the unit to reduce the risk of injury that could be caused by the presence of thin metal and/or high moving parts.

CAUTION Make sure that no piece of mineral wool will enter in the unit during installation. Otherwise, this could reduce airflow and generate vibrations and noise in the unit.

2.1 Locating and Mounting 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 149°F.
• Away from living areas (dining room, living room, bedroom), if possible.
• So as to provide easy access to the interior cabinet for maintenance, and to the control panel on the side of the unit.
• Close to an exterior wall, so as to limit the length of the insulated flexible ducts to and from the unit.
• HRV units only: close to a drain. If no drain is close by, use a pail to collect run-off.
• Away from hot chimneys, electrical panel and other fire hazards.
• Within 6 feet of a power source (standard outlet).

Suspended to the joists or trusts:

• Slightly bend the brackets on the unit to insert the provided chains.
• Hang the unit to the joists (or trusts) using the chains. Springs are not required.
• Always make sure that the unit is no more than 1/4" off level.

Wall mounted:

• Choose the appropriate location(s) for the mounting brackets according to stud(s) position.
• Insert the provided brackets under the unit frame.
• Fix the bracket using the screw no. 8 x 3/8".
• Using the 4 no. 8 x 1½" screws provided, secure the unit to the wall making sure that the 4 screws engage into a stud.
• Always make sure that the unit is no more than 1/4" off level.

Note: Keep 3" clearance on electrical box side for cooling and servicing.

Diagrams show installation with 2 brackets and installation with 4 brackets.

2.2 Installing the Ductwork and the Registers

▲ WARNING Never install a stale air exhaust register in a room where there is a combustion device, such as a furnace, gas water heater, fireplace or any appliance or equipment that can generate gaseous contaminants, or pollutants. The negative pressure this could create in the room may impair proper evacuation of the gas or pollutants, which may have severe health consequences.

CAUTION If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts to prevent condensation formation inside and outside ducts, which could cause material damage and/or mold growth. Moreover, if fresh air to building duct and/or stale air from building duct goes/go through an unconditioned space, the unit must be set to operate continuously in cold conditions (below 10°C/50°F). Continuous air movement inside ducts will prevent condensation formation. The unit can be stopped temporarily for maintenance and/or repair purposes in such conditions.

2.2.1 Fully Ducted System (T-1)

STALE AIR FROM BUILDING:

• Install registers in areas where contaminants and humidity are produced: kitchen, bathrooms, laundry room, etc.
• Install registers on an interior wall, 6 to 12 inches away from the ceiling OR in the ceiling.
• Install the kitchen register at least 4 feet away from the range.
• Bathroom fans and range hoods can be used to better exhaust stale air.
• Homes with more than one level require at least one exhaust register at the highest level.

FRESH AIR TO BUILDING:

• Install registers in bedrooms, dining room, living room and basement.
• Install registers in the ceiling OR high on the walls with the airflow directed towards the ceiling.
• If a register must be installed in the floor, direct the airflow up the wall.

Note: For this type of configuration, the T-1 option must be selected on the LCD screen when auto-balancing the unit (see section 5.2).

2.2.2 Exhaust Ducted System (T-2)

▲ WARNING Duct connection to the central forced-air system can be regulated by some codes and standards. It is your responsibility to consider and comply with your local requirements to avoid any non-compliance.

STALE AIR FROM BUILDING: Same as for Fully Ducted System, described on point 2.2.1.

FRESH AIR TO BUILDING:

• Connect the fresh air distribution duct of the unit to the central forced-air system return duct at least 10 feet away from the central forced-air system (A+B)*.

* This 10-ft. distance applies only in areas where the outside temperature falls below the freezing point (32°F).

Note: The central forced-air system blower operation can be synchronized with the unit (see section 3.3). It is recommended, but not essential that the central forced-air system blower runs when the unit is in operation.

Note: For this type of configuration, the T-2 option must be selected on the LCD screen when auto-balancing the unit (see section 5.2).

Diagram shows stale air from building to unit and fresh air from outdoors to unit, with fresh air supplied to building and stale air exhausted outdoors.

Alternate Installation (T-3)

Unit should be synchronized with central forced-air system operation to avoid condensation and mold growth in central forced-air system distribution ducting if cooling mode of central forced-air system is used.

CAUTION This configuration is not recommended with high velocity central forced-air system. High pressures produced by these systems could affect unit proper operation and generate errors.

Note: For this type of configuration, the T-3 option must be selected on the LCD screen when auto-balancing the unit (see section 5.2).

Diagram shows stale air from building to unit and fresh air from outdoors to unit, with fresh air supplied to building and stale air exhausted outdoors.

2.2.3 Simplified Installation (T-4)

CAUTION The central forced-air system must be synchronized with the unit since fresh air evacuation and distribution come from the same section. The central forced-air system must operate to avoid fresh air to be directly drawn by the evacuation, which would reduce significantly fresh air supply to the building. See section 3.3 for ducting.

▲ WARNING Duct connection to the central forced-air system can be regulated by some codes and standards. It is your responsibility to consider and comply with your local requirements to avoid any non-compliance.

Fresh air and exhaust air flow through the central forced-air system ducts, which simplifies the installation.

The use of bathroom fans and a range hood is suggested to exhaust stale air.

STALE AIR FROM BUILDING: Connect the stale air intake port of the unit to the central forced-air system return duct at least 3 feet ahead of the fresh air distribution from the unit.

FRESH AIR TO BUILDING: Connect the fresh air distribution duct of the unit to the central forced-air system return duct at least 10 feet away from the central forced-air system (A+B)*.

* This 10-ft. distance applies only in areas where the outside temperature falls below the freezing point (32°F).

Note: For this type of configuration, the T-4 option must be selected on the LCD screen when auto-balancing the unit (see section 5.2).

Diagram shows stale air from building to unit and fresh air from outdoors to unit, with fresh air supplied to building and stale air exhausted outdoors.

Alternate Installation (T-5)

Unit should be synchronized with central forced-air system operation to avoid condensation and mold growth in central forced-air system distribution ducting if cooling mode of central forced-air system is used.

CAUTION This configuration is not recommended with high velocity central forced-air system. High pressures produced by these systems could affect unit proper operation and generate errors.

Note: For this type of configuration, the T-5 option must be selected on the LCD screen when auto-balancing the unit (see section 5.2).

Diagram shows stale air from building to unit and fresh air from outdoors to unit, with fresh air supplied to building and stale air exhausted outdoors.

2.3 Connecting the Drain (HRV Only)

CAUTION Install the drain hose included and run it to a drain or a pail. This unit may generate a large amount of water in cooler weather. It is necessary to install the drain hose properly to prevent water damage and/or material damage.

• Cut the appropriate length of drain tubing.
• Connect the tubing to the provided adaptor.
• Make a water trap loop in the tube to prevent the unit from drawing unpleasant odors from the drain source.
• Add water in the loop to prevent noise or hiss.
• Make sure there is a distance of at least 2" between the unit and the tubing loop.
• Using the tie wrap provided, attach the tubing as illustrated.
• Run the tube to the floor drain or to an alternate drain pipe or pail.
• IMPORTANT: If using a pail to collect water, place the tube end approximately 1" inside the pail in order to prevent water from being drawn back up into the unit.

Diagrams show drain tubing connections and water trap loop.

2.4 Exterior Hoods Installation / Location

▲ WARNING

• Make sure intake hood is located at least 10 feet away from any of the following: Dryer exhaust, central vacuum vent, Gas meter exhaust, gas barbecue-grill, Any exhaust vents or chimney from a combustion source, Garbage bin and any other source of contamination such as parking lots, streets.
• For multifamily buildings only: Make sure exhaust hood is located at least 3 feet away from any of the following: Property lines, Operable openings into buildings (door, window).

• Intake and exhaust hood(s) shall be protected with corrosion-resistant screens, louvers or grilles having openings not less than 1/4 inch and not larger than 1/2 inch.
• Install hood(s) at least at 18 inches away from the ground OR depth of expected snow accumulation, whichever is greater.

To minimize cross-contamination of exhausted stale air into the fresh air intake:

• Single detached, attached homes and townhouses: Maintain a 6 feet minimum separation distance between outdoor air intake and exhaust hoods OR use an approved factory-built intake/exhaust combination termination fitting.
• Multifamily buildings: Maintain a 10 feet minimum separation distance between outdoor air intake and exhaust hoods OR use an approved factory-built intake/exhaust combination termination fitting.

Ignoring these recommendations could significantly degrade the quality of the incoming air which, in some cases, could result in health consequences. In the event of a conflict between our recommendations and any local requirements, the latter shall have priority.

Refer to illustration below for an example of proper connection method of the insulated ducts to the hoods. An “Anti-Gust Intake Hood” should be installed in regions where snow is expected.

Diagram shows exterior hood installation with intake and exhaust hoods, and legend for distances.

2.5 Connecting the Ducts to the Unit

CAUTION If ducts have to go through an unconditioned space (e.g.: attic), always use insulated ducts to prevent condensation formation inside and outside ducts, which could cause material damage and/or mold growth.

Do not use screws to connect the ducts or transitions to the ports so as not to interfere with ports inner dampers operation. A non-functioning damper could freeze the unit, which could cause damages.

Insulated Flexible Ducts

Use the following procedure to connect the insulated flexible ducts to the ports of the unit (exhaust to outside and fresh air from outside).

1. Expose the flexible duct by pulling back the insulation, and place it over the inner port ring.
2. Attach the flexible duct to the port using a tie wrap.
3. Seal the joint using duct tape.
4. Pull the insulation and vapor barrier over the joint, tuck them between the inner and outer rings of the double collar and fasten them in place using duct tape.

CAUTION The vapor barrier should remain intact and free of cracks or openings. An opening could produce condensation inside or outside duct, which could cause material damage and/or mold growth in the long run.

Diagrams show proper connection of flexible ducts.

Transitioning to 8-in. Ducts

If using 8-in. ducts, install 6-in. to 8-in. transitions on the ports, and secure using duct tape only. If rigid ducting is used, install a 12-in. section of flexible duct between the transition and the rigid ducting.

Rigid Ducts

To prevent potential water leakage in cold side rigid ducting insulation, seal all rigid ducting joints with duct tape.

To avoid transmission of vibrations, always use a 12-inch section of flexible duct to connect rigid ducts to the unit. To connect insulated rigid ducts to the unit (cold side) using insulated flexible ducts, follow instructions in section 2.4. To connect regular rigid ducts (warm side) to the unit using non-insulated flexible ducts, use a tie wrap.

Note: It is recommended to use 8" ducting instead of 6" ducting if required airflow is over 200 CFM and long run of ducting or high quantity of elbows is used. It will prevent having too high static pressure in the ducting.

2.5.1 Ducts Connection

IMPORTANT: Make sure to connect ducting as illustrated below to get airflows reading accuracy. Correct installation will also allow proper drainage of water that may accumulate in ducting.

Diagram shows correct installation of ducts.

CAUTION Ducting must not be too crushed. Otherwise, airflows reading accuracy will be affected.

CAUTION Insulated ducts must have the same diameter as the ports to ensure proper drainage of water that may accumulate in ducts.

Diagram shows incorrect installation of ducts.

Note: Route ducts as straight as possible, minimize the number of elbows and design and install ducts in accordance with ACCA's Manual D.

3. Connections

3.1 Electrical Connection to Optional Main Wall Control

▲ WARNING Always disconnect the unit before making any connections. Failure to cut power could result in electrical shock or damage to 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 the risk of electrical interference (noise), 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.

Diagram shows unit bottom view and terminal connector with labels: OVR, LED, 12V, D-, D+, GND.

Use the terminal connector included to perform the electrical connection for optional main wall control. Check if all wires are correctly inserted in their corresponding holes in the terminal connector. Use screws to fix wires in the terminal connector.

Once the wall control connections have been made, insert the terminal connector in the electrical compartment.

Note: For information about the operation of the wall control, refer to the corresponding Installation and User Guide, available at Broan-NuTone.com.

3.1.1 Electrical Connection to Speed, Dehumidistat or Automatic Optional Main Wall Control

Wiring diagram shows connections for speed, dehumidistat, or automatic optional main wall control.

3.1.2 Electrical Connection to Advanced Optional Main Wall Control

Wiring diagram shows connections for advanced optional main wall control.

3.2 Electrical Connection to Optional Auxiliary Wall Control

3.2.1 Electrical Connection to 20-40-60 Optional Auxiliary Wall Control

Wiring diagram shows connections for 20-40-60 optional auxiliary wall control.

When configuring OVR option on the LCD screen, choose among these 3 configurations: BAL (the unit remains balanced while providing maximum airflow), PER (the unit is slightly unbalanced since the distribution motor is in MAX speed while allowing maximum exhaust ventilation) and DIS (the unit is unbalanced since air distribution is constant despite a higher need in exhaust ventilation).

Note: The auxiliary wall control can be used with a 3-wire connection by removing the LED signals. This optional wiring will not allow an installation with more than 1 auxiliary wall control to properly synchronize their LEDs on an event requested from a peer. Only the auxiliary wall control having requested the timer event will have the LEDs updated accordingly.

3.2.2 Electrical Connection to Dry Contact Optional Auxiliary Wall Control (e.g. Crank Timer)

Wiring diagram shows connections for dry contact optional auxiliary wall control.

▲ WARNING A miswiring that sends a 24 VAC signal to the 6-position terminal block (OVR, LED, 12V, D-, D+, GND) could permanently damage the control circuit. Verify carefully wire connections before powering-up the unit.

3.3 Connection to the Central Forced-Air System

▲ WARNING Never connect a 120-volt AC circuit to the terminals of the central forced-air system interlock (standard wiring). Only use the low voltage class 2 circuit of the central forced-air system blower control. The unit is designed for low voltages only. Connecting the unit on 120-volt circuit would damage it instantly.

3.3.1 Unit Operation Using a Dry Contact Connection

This unit can be controlled by any dry contact connection such as the thermostat equipped with an optional ventilation output.

Once wired, unit will toggle between the Standby mode when contact is opened and the selected mode when contact is closed.

Choose among these 4 configurations: minimum (unit operating in MIN speed), intermittent (unit operating in MIN speed 20 min/hr then as per INT configuration selection for 40 min), auto* (unit operating according to outdoor temperature) and maximum (unit operating in MAX speed) in DRY option on the LCD screen when the VENT contact is activated. Refer to section 5 for more details.

* In auto mode, the unit will operate as follows:

• Less than -13°F = 10 min/hr
• -13°F to 19°F = 20 min/hr
• 19°F to 50°F = 40 min/hr
• 50°F to 77°F = MIN speed
• 77°F to 82°F = 30 min/hr
• 82°F to 91°F = 20 min/hr
• Above 91°F = 10 min/hr

Diagrams show wiring for dry contact connection and alternate wiring for dry contact independent installation.

Note: This dry contact option will override the main wall control so we do not recommend the use of a wall control with this type of connection.

Note: Following ducting installation configuration and temperature conditions, it may be necessary for the unit to operate continuously. Refer to section 2.2 for more details.

3.3.2 Unit Interconnection with Central Forced-Air System (R/C/G/GF)

Diagram shows wiring options with central forced-air system.

These connections must be done if you want the unit to force the central forced-air system blower operation when ventilating (refer to solid lines in above diagram).

Note: These connections are required for installation configuration T-4. Refer to section 2.2 for more details.

3.3.3 Synchronization with Central Forced-Air System Function

The Virtuo technology allows synchronizing the unit operation with the central forced-air system operating time. It prevents unnecessary central forced-air system operating time while providing a better air distribution.

To use this function, W and Y connections must be added to R and C connections to inform the unit that the central forced-air system is running (refer to dotted lines in above diagram).

4. Wiring Diagram

Diagrams show logic diagram and wiring diagram with components like ventilation fan motors, damper stepper motors, isolation transformer, main electronic assembly, LCD assembly, etc.

▲ 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.

5. Navigation on LCD Screen

Diagrams illustrate the LCD screen interface and button functions (OK, +, -).

OK button: To confirm a selection.

+ button: To increase a value. To scroll up in a selection.

- button: To decrease a value. To scroll down in a selection.

Button Operations:

• Press ON OK BUTTON TO CHANGE THE OPERATING MODE. USE + BUTTON OR - BUTTON TO SELECT THE DESIRED OPERATING MODE.
• PRESS ON OK BUTTON TO CONFIRM THE OPERATING MODE SELECTION.
• PRESS ON + BUTTON OR - BUTTON TO MODIFY MAX CFM, MIN CFM OR OPTIONS CONFIGURATION.
• PRESS ON OK BUTTON DURING 4 SECONDS TO MODIFY MAX CFM CONFIGURATION. MAX CFM DATA WILL FLASH. USE + BUTTON TO INCREASE VALUE OR - BUTTON TO DECREASE VALUE. PRESS ON OK BUTTON TO CONFIRM VALUE.
• PRESS ON OK BUTTON DURING 4 SECONDS TO MODIFY MIN CFM CONFIGURATION. MIN CFM DATA WILL FLASH. USE + BUTTON TO INCREASE VALUE OR - BUTTON TO DECREASE VALUE. PRESS ON OK BUTTON TO CONFIRM VALUE.
• PRESS ON OK BUTTON DURING 4 SECONDS TO MODIFY OPTIONS CONFIGURATION. FOR EACH OPTION CONFIGURATION, USE + BUTTON TO SCROLL UP IN OPTIONS AVAILABLE OR - BUTTON TO SCROLL DOWN IN OPTIONS AVAILABLE. ONCE OPTION SELECTION IS DONE, PRESS OK BUTTON TO CONFIRM SELECTION. THE NEXT OPTION CONFIGURATION WILL THEN DISPLAY.
• PRESS ON OK BUTTON DURING 4 SECONDS TO ACCESS COMPLEMENTARY INFORMATION. DISPLAYS UNIT AIRFLOWS.

Note: According to unit model and configuration, some menus may not be available.

Diagrams illustrate how to modify CFM settings and options.

Example: In the example above, the unit provides 114 CFM with a power consumption of 110 W during 50% of the hour. The net airflow is 57 CFM (50% X 114), the net power consumption is about 55 W (50% X 110).

5.1 LCD Screen

5.2 Unit First Boot

PREPARATION

• Seal all the ductwork with tape. Close all windows and doors.
• Turn off all exhaust devices such as range hood, dryer and bathroom fans.
• If the installation is in any way connected to a ductwork of a central forced-air system, make sure that the central forced-air system blower is ON. If not, leave central forced-air system blower OFF.

AUTO-BALANCING PROCEDURE

• Plug the unit and wait for the maximum CFM to display on the LCD screen. If unit is colder than ambient temperature, it is normal to experience a 60 s longer boot-up since motors have to preheat.
• The maximum CFM will display on the LCD screen. Use (+/-) to adjust the CFM and OK to confirm.
• The minimum CFM will display on the LCD screen. Use (+/-) to adjust the CFM and OK to confirm.
• The house that flashes on the LCD screen indicates which side currently limits the airflow (supply or exhaust). If the airflow reached is not sufficient, the installer can improve the installation to increase airflow.

INSTALLATION CONFIGURATION SELECTION

• INS will display on the LCD screen. Choose among T-1, T-2, T-3, T-4 or T-5 following the installation configuration (Refer to section 2.2 for more details).
• Auto-balancing is completed.

5.3 Settings Modification

5.3.1 Procedure to Modify MIN CFM Setting

• Go to MIN using (+/-) then press on the OK button for 4 seconds.
• Use (+/-) to increase/decrease CFM and OK to confirm.

5.3.2 Procedure to Modify MAX CFM Setting

• Go to MAX using (+/-) then press on the OK button for 4 seconds.
• Use (+/-) to increase/decrease CFM and OK to confirm.

5.3.3 Procedure to Modify Options Setting

• Go to CFG OPT using (+/-) then press on the OK button for 4 seconds.

5.3.4 Procedure to Modify Independent Airflows Setting

• Press simultaneously (+/-) buttons for 4 seconds.

Diagrams illustrate the process of modifying MIN CFM, MAX CFM, and independent airflow settings.

SUPPLY AIRFLOW VALUE WILL FLASH. PRESS ON + BUTTON OR - BUTTON TO INCREASE/DECREASE VALUE. PRESS OK BUTTON.

EXHAUST AIRFLOW VALUE WILL FLASH. PRESS ON + BUTTON OR - BUTTON TO INCREASE/DECREASE VALUE. PRESS OK BUTTON.

WHEN MAX DISPLAYS, PRESS ON + BUTTON TO EXIT INDEPENDENT AIRFLOWS SETTING.

6. Using This Unit

6.1 Your Ventilation System

This balanced ventilation unit is designed to provide fresh air to your home while exhausting stale, humid air. Thanks to its energy/heat recovery module, the unit recovers a large proportion of heat or energy that is part of indoor or outdoor air according to the seasons to improve comfort and energy efficiency during the heating and the cooling periods. With the Virtuo Air Technology™, this unit responds to the variations in its environment in an autonomous way, ensuring to provide a proper level of ventilation and air quality. This unit also features automatic modes (AUTO or SMART) that manage autonomously the required ventilation level as per indoor and/or outdoor conditions. In colder areas, the unit will perform, at intervals, recovery module discreet defrost to maintain performance and comfort.

6.2 Integrated Control

All units are equipped with an integrated control, located in front of the electrical compartment. For more convenience, these units can be controlled using an optional wall control or the central forced-air system thermostat equipped with external fan activation.

MODE SELECTION

1. To change the mode, use (+/-) to access the Mode screen. Press OK to edit the mode and use (+/-) to change the mode (Standby, Min, Max).
2. Press OK to confirm selection. The airflows will be displayed for both MIN and MAX modes.

Note: If an optional auxiliary wall control or the central forced-air system thermostat equipped with external fan activation is used, it overrides the integrated control.

6.3 AHU Mode Display

Depending on unit configuration and/or installation, the unit could not be able to reach desired set minimum CFM. This situation could happen with installed configurations T-2 to T-5 due to AHU static pressure and a set minimum CFM below 75. In such a case, AHUXX (XX referring to desired minimum CFM value) will display on LCD screen. In AHU mode, the unit operates in intermittent mode to reach desired minimum CFM value. Intermittent mode duration varies as per desired minimum CFM value.

7. Service Parts

Diagram shows an exploded view of the unit with numbered parts.

** See next page to get the part number that corresponds to the ventilation unit model.

REPLACEMENT PARTS AND REPAIRS

In order to ensure your ventilation unit remains in good working condition, you must use the manufacturer's genuine replacement parts only. The manufacturer's 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. The manufacturer recommends to contact a certified service depot for all replacement parts and repairs.

8. Installer's Troubleshooting

▲ WARNING The wearing of safety glasses and gloves is recommended since a few diagnosis procedures may require the unit to be in operation while proceeding. Be careful with moving and live parts to prevent any risk of injury.

WARNING

CAUTION Make sure that no piece of mineral wool will enter in the unit during installation. Otherwise, this could reduce airflow and generate vibrations and noise in the unit.

Note: 210 and 230 CFM models have a cooling fan in electrical box that can start if ambient temperature near the unit is over 104°F.

9. Maintenance

▲ WARNING High voltage risk. During maintenance or repairs, always stop the unit then unplug it to prevent any risk of electric shock. The wearing of safety glasses and gloves is recommended when handling unit components to prevent any risk of injury that could be caused by the presence of thin metal.

9.1 Quarterly

1. Disconnect power cord.
2. The door of this unit is hinged and maintained closed by 2 latches. Open them and set aside.
3. Clean the inside of the door with a damp cloth.
4. Clean filters:
   • Remove filters.
   • Vacuum to remove most of the dust.
   • Wash with a mixture of warm water and mild soap. You may add bleach if you wish to disinfect (one tablespoon per gallon). Rinse thoroughly. Shake filters to remove excess water and let dry.

   Note: The optional filter is a disposable filter. It should be replaced when it is too dirty.

5. Remove the core.
6. Clean the condensing tray with a damp cloth.
7. Check the exterior air intake hood:
   • Make sure there are no leaves, twigs, ice or snow that could be drawn into the vent.
   • Clean if necessary.
8. Rotate the blower wheels by hand. If one of the wheels does not rotate easily, contact your installer.
9. Reassemble the components. Pay special attention to the filters by making sure that they are engaged in their slots.
10. Close the unit door and reconnect power supply.
11. Reset filters, if required. If using an optional main wall control (SPEED, DEHUMIDISTAT OR AUTOMATIC), press on the INT/AUTO button for 5 seconds to reset the filters. If using the ADVANCED optional main wall control, follow the instructions on the touch screen.

Diagrams show filter installation and core removal.

CAUTION A blocked air vent or filter, even partially, could cause the unit to malfunction. The comfort provided by the unit could be reduced and the risk of unit frost could increase. This could cause unit breakdown and/or damage to property.

9.2 Annual (At Fall)

1. Repeat steps 1 to 6 from the previous section and continue with the following steps:
2. Handle the recovery core with care.
3. Clean the recovery core:
   • Remove the core.
   • HRV MODELS: Let it soak in a mixture of cold or lukewarm water and mild soap (dishwashing liquid). Rinse thoroughly. Shake the core to remove excess water and let it dry.
   • ERV MODELS: Remove the dust on the core using a vacuum cleaner and a soft brush attachment.
   • CAUTION: DO NOT SOAK THE ENERGY RECOVERY CORE IN WATER
4. Clean the blower assemblies. Do not disassemble the blower assemblies.
5. Remove the dust using a vacuum cleaner with a soft brush attachment.
6. Reassemble the components.
7. Reconnect power supply.

10. User's Troubleshooting

If the unit does not work properly, reset the unit by unplugging it for one minute, then replug it. Contact customer service at 1-800-558-1711 for any unresolved issue.

11. Warranty

This ventilation unit is a high quality product, built and packaged with care. The manufacturer warrants to the original purchaser of its product, that such products will be free from defects for the period stated below, from date of original purchase. For all units, the warranty covers parts only against any operational defect. This 5-year warranty is subject to performance of the core maintenance according to recommendations in this manual. The heat recovery core (HRV) has a 10-year warranty, and the energy recovery core (ERV) has a 5-year warranty. If any defect should occur, we urge you to read the user guide carefully. If the problem persists, observe the following rules:

RULES TO FOLLOW

If the unit is defective, contact your ventilation contractor (see address on your manual's cover page). The contractor will determine with you the reason for the defect, and if needed, do the replacement or repair. If ever it is impossible to reach your ventilation contractor, call 1-800-558-1711 (in North America); the personnel will be pleased to give you the phone number of a distributor or a service center near you.

REPLACEMENT PARTS AND REPAIR

In order to ensure your ventilation unit remains in good working condition, you must use the 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. Broan also recommends that you contact a service depot certified by the manufacturer for all replacement parts and repair.

BILL OF PURCHASE

No replacement or repair covered by the warranty will be carried out unless the unit is accompanied by a copy of the original bill of purchase. Please retain your original.

MISCELLANEOUS COSTS

In each case, the labor and shipping costs for the removal of a defective part and/or installation of a compliant part will not be covered by the manufacturer.

CONDITIONS AND LIMITATIONS

These units are created for residential use only and must be used in a building as defined below:

Building: All structures zoned and/or erected for the act, process or art of human or animal habitation and/or the storage or warehousing of goods.

Residential use: Dwelling, lodging, suite: Building, or part of a building, intended to act as either the domicile to one or several people which can include general sanitary, food consumption and rest facilities. Buildings of only one room or a group of rooms including those occupied by a tenant or owner; comprise the lodgings, the individual rooms of the motels, hotels, rooming/lodging houses, boarding/half-way/foster homes, dormitories, and suites, as well as the stores and the business establishments constituted by only one room in a dwelling.

Commercial use: Agricultural establishment, commercial establishment for assembly, care, or detention: Building or part of a building that does not contain a dwelling, situated on land dedicated to agriculture or farming and used primarily to shelter animals, or for the production, the storage or the treatment of agricultural or horticultural products or animal food. Building or part of a building, used for the display or retail of goods, professional or personal services, or commodities. Building, or part of a building used by persons gathering for civic activities, religious or political assembly, tourism, educational/vocational training, recreation or the consumption of food or drink. Building, or part of a building used to shelter persons of impaired physical or psychological states, persons requiring palliative care or medical treatments, or persons for reasons out of their control, cannot escape harm or threat of danger autonomously.

Industrial use: Building, or part of a building, used for the assembly, the manufacture, the creation, the treatment, the repair or the storage of products and combustible materials and that contain fuels that when ignited or exploded in sufficient quantity may constitute a risk of fire.

The above warranty applies to all cases where the damage is not a result of poor installation, improper use, mistreatment or negligence, acts of God, or any other circumstances beyond the control of the manufacturer. Furthermore, the manufacturer will not be held responsible for any bodily injury or damage to personal property or real estate, whether caused directly or indirectly by the unit. This warranty supersedes all prior warranties.

Broan-NuTone LLC, 926 West State Street, Hartford, Wisconsin, USA 53027 Broan-NuTone.com 800-558-1711