Broan HRV90T USER GUIDE

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Table of ConTenTs

3

When the outside temperature is below 23°F, recovery of heat or 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 outside temperature.

During the defrost cycle, the unit shifts to maximum speed and the dampers close.

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

1. defrosTinG Mode

1. defrosTinG Mode . . . . . . . . . . . . . . . . . . . . . . . 3

2. ConTrols. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

2.1 Integrated Control . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 BootIng SequenCe . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.3 optIonal MaIn and auxIlIary ControlS . . . . . . . . . . . . . . . 5

3. MainTenanCe . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

3.1 quarterly MaIntenanCe . . . . . . . . . . . . . . . . . . . . . . 6-7

3.2 annual MaIntenanCe . . . . . . . . . . . . . . . . . . . . . . . . 7

4. TroUbleshooTinG . . . . . . . . . . . . . . . . . . . . . . . . 8

replaCeMenT parTs and repair

In order to ensure your ventilation unit remains in good working condition, you must

use Broan-NuTone LLC genuine replacement parts only. The Broan-NuTone LLC

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-NuTone LLC recommends to contact a Broan-NuTone LLC certified service depot

for all replacement parts and repairs.

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Broan HRV90T Compact Flex Series High Efficiency Heat Recovery Ventilator, 90 CFM at 0.4 in. w.g