Broan ERV90HCS, HRV90HS installation instructions Balancing the Unit

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7. BALANCING THE UNIT

To avoid balancing, the difference between stale air ducts total lenght and fresh air ducts total lenght must not exceed 50 ft. However, even if the stale air ducts and fresh air ducts lenghts 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.

7.1WHAT 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.

 

 

7.2 PRELIMINARY STAGES TO BALANCE THE UNIT

 

VP0009

 

 

 

 

•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 outside 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).

A

VJ0032

Port with integrated balancing

damper - Top view

7.3BALANCING 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 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 EXHAUST air flow pressure taps (see diagram beside).

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 or source point ventilation. Place the magnehelic gauge upright and level. Record equivalent AIR FLOW of the reading according to the balancing chart.

Balancing

 

 

 

 

Chart

 

 

 

 

 

 

 

 

Fresh air flow

1

12

12

11

 

1

12

12

11

 

3 13 33 23

 

1

12

12

11

Exhaust air flow

1

12

12

11

3 13 33 23

 

 

 

 

VP0015

 

 

 

 

4.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.

5.Secure both dampers thumb screw in place with tape.

6.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 or 17 m3/h) between the two air flows.

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Contents Installation Instructions HRV90H and ERV90HC About These Units Limitation About this ManualTable of Contents HRV ERV Technical DataVentilation Performance Technical Data CONT’DHRV Typical Installations Typical Installations CONT’D Installation Make sure the unit is level Installation CONT’DStale air exhaust ductwork Fresh air distribution ductworkMethod 1 Supply side connection Duct, see figure besideMethod 2 Return side connection Method 2B Return-return with Automatic fresh air bypass Stale air intakeFresh air distribution Insulated flexible ducts Rigid ductsDo not use screws to connect the rigid ducts to the ports 457 mm Xmas tree pin ’’ Ø Avertissement ControlsNo C NC I OC OL Y R G B Controls CONT’DOC OL Y R G Electrical Connection to the Furnace6WIRINGDIAGRAM Balancing the Unit To drain Connecting the Drain HRV Units onlyMaintenance Maintenance CONT’D HRV90HS HRV90HT ERV90HCS ERV90HCT Service PartsProblems Possible causes You should try this Troubleshooting

ERV90HC, HRV90HS, HRV90H, ERV90HCS specifications

The Broan HRV90H, ERV90HCS, HRV90HS, and ERV90HC are advanced energy recovery ventilators designed to optimize indoor air quality while efficiently managing energy consumption in residential and commercial spaces. These models exemplify the marriage of function, effectiveness, and technology to ensure that you have a constant supply of fresh air without sacrificing comfort.

One of the main features of these units is their energy recovery technology. The HRV models are designed to recover heat from the outgoing stale air and transfer it to incoming fresh air, while the ERV models go a step further by transferring both heat and moisture. This is especially beneficial in climates where maintaining humidity levels is crucial for comfort. By using these units, homeowners can enjoy fresh air without throwing away energy costs associated with heating or cooling.

The compact design of the Broan HRV and ERV systems allows for flexible installation in various settings. They can be easily integrated into existing HVAC systems or used in new constructions. Each model is equipped with user-friendly controls, featuring various operation modes to suit different needs, whether it's a high-demand situation or a standard ventilation requirement.

Another standout characteristic is their quiet operation. Engineered with sound-dampening materials, these units ensure that they run quietly, allowing you to enjoy a peaceful indoor environment. Additionally, their high-efficiency filters capture airborne particles, thus promoting a healthier living space by reducing allergens and other irritants.

In terms of energy efficiency, the Broan HRV and ERV units boast impressive performance ratings, which can help homeowners save significantly on energy bills over time. The technology used in these products meets industry standards and certifications, ensuring that they not only perform well but also adhere to environmental regulations.

With a commitment to quality and reliability, Broan offers these energy recovery ventilators as a smart choice for those looking to enhance indoor air quality while remaining energy-conscious. The HRV90H, ERV90HCS, HRV90HS, and ERV90HC are the perfect solutions for creating a more comfortable, healthy, and efficient living or working environment. Whether you are renovating an older home or planning a new build, these systems provide an innovative approach to modern ventilation needs.
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