Electrical Connection To The Furnace - vanEE NOVO+ 100H Installer Manual

6. ELECTRIC CONNECTION TO THE FURNACE
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.
F
OR 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
STANDARD FURNACE INTERLOCK WIRING
W R G
FOUR
WIRES
TWO WIRES
heating only
W
R
G
C
Y
FURNACE
24-VOLT
TERMINAL BLOCK
VE0108A
:
THERMOSTAT
TERMINALS
Y
TWO WIRES
COOLING SYSTEM
!
WARNING
ALTERNATE FURNACE INTERLOCK WIRING
W
4 WIRES
2 WIRES
heating only
W
R R
G
C
Y
Y
FURNACE
24-VOLT
TERMINAL BLOCK
13
ALTERNATE FURNACE INTERLOCK WIRING
THERMOSTAT
R G Y
TERMINAL
wiring
nuts
NO
NC
C
2 WIRES
.
COOLING SYSTEM