Lectrical Onnection To Ptional Uxiliary Ontrols; Electrical Connection To The Furnace - Broan HRV90T Installation Manual

5. C
( ' )
ONTROLS
CONT D
5.5 E C
LECTRICAL ONNECTION TO
Once the control(s) connections have been made, insert the terminal connector in the
electrical compartment interface.
6. E C
LECTRICAL ONNECTION TO THE
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 A
S
TANDARD
W R G
FOUR
WIRES
TWO WIRES
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
VE0108A
O A
PTIONAL UXILIARY
F
URNACE
F I W
URNACE NTERLOCK IRING
THERMOSTAT
TERMINALS
Y
TWO WIRES
COOLING SYSTEM
W C
ALL ONTROLS
NO C NC I OC OL Y R G B
VE0371
!
WARNING
A
4 WIRES
2 WIRES
heating only
W
R R
G
C
Y
Y
FURNACE
24-VOLT
TERMINAL BLOCK
13
59W
T
ERMINAL
CONNECTOR
VE0221
F
LTERNATE URNACE
F I
LTERNATE URNACE NTERLOCK
THERMOSTAT
W R G Y
TERMINAL
wiring
nuts
NO
NC
C
2 WIRES
VB20W or VB60W
I W .
NTERLOCK IRING
W
IRING
COOLING SYSTEM