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WIRING
CAUTION
1. Check the wiring diagram furnished by the appli-
ance manufacturer, if available, for circuits differing
from the general hookup shown. Carefully follow
any special instructions affecting the general proce-
dures outlined below.
2. Disconnect the power supply before making wiring
connections to prevent electrical shock or equip-
ment damage.
INSTALLATION
VOLTAGE
Factory
120 Vac
24 Vac
Field
120 Vac
24 Vac
VR8204
2
PRESSURE
GAS CONTROL
SWITCH
MV
MV/PV
PV
GND
LIMITS
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
IF USING VR8205, CONNECT P1-4 TO MV AND P1-2 TO
OTHER MV TERMINAL.
3
9-PIN AMP MATE-N-LOC RECEPTACLE AND PLUG.
4
6-PIN AMP MATE-N-LOC RECEPTACLE AND PLUG.
FIELD WIRING
FACTORY WIRING
FIG. 1—TYPICAL WIRING CONNECTIONS TO S9201A INTEGRATED FURNACE CONTROL.
TABLE 1—WIRING CONNECTIONS.
TERMINAL TYPE
6-socket AMP
Mate-N-Loc
receptacle
1/4 in. male
quick-connects
9-socket AMP
Mate-N-Loc
receptacle
1/4 in. male
quick-connects
Screw terminals
Screw terminals
THERMOSTAT
G
Y W R
3
HUMIDIFIER
P1-5
CONTROLLER
P1-6
P1-4
P1-2
P1-9
P1-3
P1-8
CONTROL
TRANSFORMER
L2
L1
(HOT)
1
2
IMPORTANT
1. The common ground required for the S9201 and
the main burner must be supplied through the plug
connected to the P1 receptacle on the board.
2. Make sure the transformer has adequate VA. To
determine the total VA requirement, add the maxi-
mum current draws of all devices in the control
circuit, including the furnace control and the gas
control, and multiply by 24. The result is the mini-
mum transformer VA rating. Use a Class II trans-
former if replacement is required.
All wiring must comply with local codes and ordinances.
See Fig. 1 for typical connections, but refer to furnace
manufacturer's instructions if available.
CONNECTS S9201 TO:
Igniter and induced draft blower motor.
Indoor blower motor, system
transformer and 120 Vac power supply.
Pressure switch, gas control and limits.
Also supplies common ground
between burner and S9201.
Transformer secondary.
Humidifier and electronic air cleaner.
Thermostat.
HUMIDIFIER
M1
M2
COOL
HEAT
EAC
L1
COM
HUM
R
W
4
24 VAC
Y
P2
G
C
P1
3
INDOOR BLOWER MOTOR
M-LO
M-HI
HI
LO
RUN
CAPACITOR
EAC
HOT SURFACE IGNITER
P2-3
P2-1
P2-4
(IDM)
4
P2-6
M1429A
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