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.
TABLE 1—WIRING CONNECTIONS.
INSTALLATION VOLTAGE TERMINAL TYPE CONNECTS S9201 TO:
Factory 120 Vac 6-socket AMP Igniter and induced draft blower motor.
Mate-N-Loc
receptacle
1/4 in. male Indoor blower motor, system
quick-connects transformer and 120 Vac power supply.
24 Vac 9-socket AMP Pressure switch, gas control and limits.
Mate-N-Loc Also supplies common ground
receptacle between burner and S9201.
1/4 in. male Transformer secondary.
quick-connects
Field 120 Vac Screw terminals Humidifier and electronic air cleaner.
24 Vac Screw terminals Thermostat.
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.
2
FIG. 1—TYPICAL WIRING CONNECTIONS TO S9201A INTEGRATED FURNACE CONTROL.
G
Y
L1
(HOT)
GND
VR8204
GAS CONTROL
MV
MV/PV
PV
P1-6
P1-4
P1-2
PRESSURE
SWITCH
P1-9
P1-3
P1-8
P1-5
LIMITS
THERMOSTAT
YWRG
INDOOR BLOWER MOTORHUMIDIFIER
HUMIDIFIER
CONTROLLER
P1
COM
24 VAC
COOL
HEAT
EAC
EAC
HUM
L1
W
R
C
CONTROL
TRANSFORMER
P2
M1
M2
NEUTRALS
M-LO
M-HI
HI
(IBM)
LO
RUN
CAPACITOR
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
IF USING VR8205, CONNECT P1-4 TO MV AND P1-2 TO
OTHER MV TERMINAL.
9-PIN AMP MATE-N-LOC RECEPTACLE AND PLUG.
6-PIN AMP MATE-N-LOC RECEPTACLE AND PLUG.
2
3
4
2
3
4
3
L2
P2-6
P2-4
4
P2-3
P2-1
HOT SURFACE IGNITER
1
(IDM)
M1429A
FIELD WIRING
FACTORY WIRING