10.0AirFlowBalancing

(cont’d)

BALANCING PROCEDURE

1.Set the unit to high speed.

Make sure that the furnace blower is ON if the installation is in any way connected to the ductwork of the cold air return. If not, leave furnace blower OFF. If the outside temperature is below 0°C / 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 flow collar (or “Flow Measuring Station”) in exhaust air stream at location A. Be sure to connect the tubes to their appropriate high/low fittings. If the gauge drops below zero, reverse the tubing connections. 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 and exhaust ducted installation. Place the magnehelic gauge upright and level. Record the readings.

LOW

HIGH

 

FLOW

VP0003

4.Move tubing to FRESH air flow on the other side of the unit (location B) and note readings.

Adjust the fresh air balancing damper F until the reading at B is approximately the same as the reading at A. If the reading at B is less than the reading at A, then go back and adjust the exhaust balancing damper G to equal the fresh air flow.

VP0004

5. Secure both dampers in place with tape or with a fastening screw.

LOW

HIGH

 

FLOW

FG

VD0069

VD0052

6.If you are using flow collars, remove them, reconnect the duct and seal with duct tape. If you are using “Flow Measuring Stations”, remove them and seal the holes with duct tape. 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: Most flow collar kits provide a conversion chart located on the collar which enables you to convert magnehelic gauge readings to equivalent cfm values.

The unit is considered balanced even if there is a difference of +/- 10 cfm (+/- 0.015 inch w.g.) between the two air flow readings.

If you are only using one flow collar or one “Flow Measuring Station”, then, after completing the first reading, transfer this measuring device to the other side of the unit and take the second reading.

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Maytag ERV-150, HRV-210, ERV-210, HRV-150 manual Balancing Procedure
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ERV-150, HRV-150, ERV-210, HRV-210 specifications

The Maytag HRV-210, ERV-210, HRV-150, and ERV-150 are advanced heat recovery and energy recovery ventilators designed to enhance indoor air quality while promoting energy efficiency in residential settings. Each model comes packed with features tailored to balance ventilation and energy conservation, making them suitable for a variety of home environments.

The HRV-210 and HRV-150 are heat recovery ventilators that excel in transferring heat from outgoing stale air to incoming fresh air. This process effectively maintains comfortable indoor temperatures, recovering up to 70% of the heat energy, which can lead to significant energy savings during colder months. Both models boast an airflow capacity of up to 210 CFM and 150 CFM, respectively, ensuring effective ventilation for medium to large-sized homes.

On the other hand, the ERV-210 and ERV-150 embody energy recovery technology that captures not only heat but also moisture content from the air. This is particularly beneficial in humid climates where maintaining humidity levels is crucial for comfort and health. With similar airflow capacities as the HRV models, these ERVs help regulate humidity levels, preventing the growth of mold and improving indoor air quality.

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