Broan User Guide

Introduction

Congratulations! You have made an excellent choice! The operating principle of your Heat Recovery Ventilator or your Energy Recovery Ventilator will give you personal comfort you have never known before.

This User Guide has been prepared especially for you. Please read it carefully to ensure you obtain full benefit from your unit. Over the coming months, you will increasingly appreciate the feeling of living in a more comfortable house.

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.

We welcome any suggestions you may have concerning this guide and/or the unit, and we would appreciate hearing your comments on ways to better serve you.

Please forward all correspondence to Broan-NuTone LLC at the address indicated on the product registration card included with this guide.

CAUTION
Make sure at all times that the outdoor intake and exhaust hoods are free from any snow during the winter season. It is important to check your unit during a big snow storm, so it doesn't draw in any snow. If this is the case, please operate the unit in the recirculation mode, or turn it OFF for a few hours.

Do not use your unit during construction or renovation of your house or when sanding drywall. This type of dust may damage your system.

Since the electronic control system of the unit is incorporated with a microprocessor, it may not operate correctly because of external noise or very short power failure. If this happens, unplug the unit and wait approximately 10 seconds. Then, plug the unit in again.

CAUTION
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. If the ductwork runs 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. At least once a year, the unit mechanical and electronic parts should be inspected by qualified service personnel.

Table of Contents

1. Defrosting Mode
2. Booting Sequence
3. Main and Auxiliary Controls
4. Maintenance
1. Regular Maintenance
2. Annual Maintenance
5. Troubleshooting

1. Defrosting Mode

When the outdoor temperature is below 23°F, recovery of heat in HRV units creates frost in the core. For ERV units, when the outdoor temperature is below 14°F, recovery of energy creates frost in the core.

To maintain its proper operation, the unit is programmed to defrost the recovery core. The defrost frequency varies according to the outdoor temperature.

During the defrost cycle, the dampers of the unit close but the unit speed can be set on high or low, according to your needs, using the VT9W main wall control. Refer to the Main and auxiliary wall controls user guide (included with your unit and also available at www.broan.com) for more details.

After defrosting, the unit returns to the operating mode selected by the user.

2. Booting Sequence

The unit and VT9W wall control booting sequence is similar to a personal computer booting sequence.

Each time the unit is plugged after being unplugged, or a power failure occurs, the unit will perform a 30-second booting sequence before starting to operate.

During the booting sequence, the unit is checking and resetting the motorized damper position, while the VT9W wall control screen displays 5%, 10%, 15%, etc. (up to 100%).

Once the motorized damper position completely set, the booting sequence is done.

NOTE: No command will be taken until the unit is fully booted.

3. Main and Auxiliary Controls

The only main control compatible with these units is the VT9W (purchase separately). Only one main control can be connected per unit.

Up to five VBATHW push button auxiliary controls can be used.

NOTE: When used, the VBATHW activation will override the VT9W operation, as well as the unit defrost cycle. The chronometer icon appears on VT9W screen as long as the VBATHW is activated.

For more information about your unit controls, refer to the Main and auxiliary wall controls user guide (included with your unit and also available at www.broan.com).

4. Maintenance

▲ WARNING
Risk of electric shock. Before performing any maintenance or servicing, always disconnect the unit from its power source. When cleaning the unit, it is recommended to wear safety glasses and gloves.

These units need regular and annual maintenances.

When the maintenance icon flashes on VT9W main wall control screen, perform the maintenance. The maintenance icon should flash about 4 times a year (3 regular maintenances and one annual maintenance per year).

Refer to illustration below to identify the inner parts of your unit (unit door removed to ease understanding).

1) HRV or ERV core

2) Core filters

4.1 Regular Maintenance

1. Unplug the unit.
2. Lift both top and bottom door latches, then open the unit door.

NOTE: If space in front of unit is limited, lift up the door to disengage it from its hinges and set it aside.

3. Slide out both filters from the top of the recovery core.
4. Wash both core filters under lukewarm water with mild soap. Rinse thoroughly and let dry completely before reinstalling on the core.
5. Slide the cleaned filters into the unit.
6. Close the door and plug back the unit.

NOTE: The unit will return to its previous setting after a 30-second delay for booting sequence.

7. Reset the Maintenance Indicator by pressing simultaneously on both MODE and TURBO keys for 3 seconds on VT9W main wall control; this will erase the maintenance icon from the screen.

4.2 Annual Maintenance

Perform steps 1 and 2 of the Regular Maintenance (Section 4.1), then continue with the following steps:

1. Slide out both filters (3) and recovery core (4) from the unit.
2. Clean the inside walls of the unit with a damp cloth, then wipe with a clean dry one.
3. Wash both core filters under lukewarm water with mild soap. Rinse thoroughly and let dry completely.

CAUTION
Do not soak the energy recovery core in water. This core can easily be damaged especially if it is soaked.

6. Clean the core (refer to table below).

7. Slide the cleaned core into the unit.
8. Slide the cleaned filters into the unit.
9. Close the unit door.
10. Clean the exterior hoods, then plug back the unit.

NOTE: The unit will return to its previous setting after a 30-second delay for booting sequence.

11. Reset the Maintenance Indicator by pressing simultaneously on both MODE and TURBO keys for 3 seconds on VT9W main wall control; this will erase the maintenance icon from the screen.

5. Troubleshooting

If the unit does not work properly, reset the unit by unplugging and then replug it. If it still not working properly, refer to table below.

If the problem is still not solved, call your installer or the nearest approved Service Center. Also, you can reach the Customer Service Department at the following phone number: 1-877-862-7626.