4.CONTROLS (CONT’D)

4.4OPTIONAL AUXILIARY WALL CONTROLS OPERATION 4.4.1 20-MINUTE LIGHTED PUSH-BUTTON TIMER

Set the push-button timer to ON. The fan motors will then operate at high speed for 20 minutes and the indicator will light up.

To stop activation, push one time; the unit will then get back to previous selection.

ON

VC0084

4.4.260-MINUTE CRANK TIMER

This control makes the system operate at high speed for periods varying from 10 to 60 minutes.

TURN OFF

PAST

2010

20

30

6040

50

VC0017

4.4.3HUMIDITY CONTROL

Setting during the fall, winter and spring months: Adjust knob to the desired maximum humidity level. Setting during summer:

Adjust knob to the OFF positon.

 

 

 

LATIVE HUMI

 

 

RE

DIT

 

20%

%

 

Y

 

 

 

F

 

 

 

 

O

 

 

 

 

F

HUMIDITY

25%

 

 

 

CONTROL

 

 

 

70%

 

30%

C

 

60%

 

 

 

NE

 

 

 

OM FO RT ZO

 

 

 

40%

50%

CAUTION

Do not select a humidity level below 30%. This could lead to excessive dryness in the air causing discomfort for the occupants.

VC0085

5. ELECTRICAL CONNECTION TO THE FURNACE

0 ! WARNING

Never connect a 120-volt AC circuit to the terminals of the furnace interlock (standard wiring). Only use the low voltage class 2 circuit of the furnace blower control.

For a furnace connected to a cooling system:

On some older thermostats, energizing the «R» and «G» terminals at the furnace has the effect of energizing «Y» at the thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the ALTERNATE FURNACE INTERLOCK WIRING.

STANDARD FURNACE INTERLOCK WIRING

ALTERNATE FURNACE INTERLOCK WIRING

 

 

 

 

THERMOSTAT

W

R

G

Y

TERMINALS

FOUR

 

 

 

 

WIRES

 

 

 

 

TWO WIRES

 

 

 

 

heating only

 

 

 

 

W

 

 

 

 

R

 

 

 

 

G

 

 

 

 

C

 

 

 

 

Y

 

 

 

 

FURNACE

24-VOLT

TERMINAL BLOCK

TWO WIRES

NO

C

 

NC

UNIT

I OC OL Y R G

TERMINAL CONNECTOR

B

 

COOLING SYSTEM

4 WIRES

2 WIRES

heating only

W

R

G

C

Y

Y

FURNACE

24-VOLT

TERMINAL BLOCK

W R G Y

THERMOSTAT TERMINAL

wiring nuts

NO

NC

C

2 WIRES

NO

C

 

NC

UNIT

I OC OL Y R G

TERMINAL CONNECTOR

B

 

COOLING SYSTEM

VE0108A

- 19 -

Page 18 Page 20
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Image 19
Broan ERV90HCS, HRV90HS installation instructions Electrical Connection to the Furnace, Oc Ol Y R G
Page 18 Page 20

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.

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