Honeywell PC8900A Manual page 11

CO MONITOR
4
2
PC8900
1
2
3
4
6
1
L2
L1
(HOT)
SYSTEM
TRANSFORMER
3
HUMIDIFIER OR
DEHUMIDIFIER
EQUIPMENT
VENTILATION
5
EQUIPMENT
PILOT COM
2ND
1ST
OPERATOR
OPERATOR
DUAL VALVE COMBINATION
GAS CONTROL
1 POWER SUPPLY. PROVIDE DISCONNECT
MEANS AND OVERLOAD PROTECTION
AS REQUIRED.
2 JUMPER R TO RH TO RC FOR SINGLE
TRANSFORMER APPLICATIONS.
3
DURING INSTALLER SETUP, CONFIGURE PC8900 FOR HUMIDITY CONTROL IN HEATING MODE
(HUMIDIFIER) OR COOLING MODE (DEHUMIDIFIER).
4
W8900 ALLOWS CONNECTION OF A CO MONITOR WITH UNCOMMITTED CONTACTS.
5
SEE VENTILATION INSTRUCTIONS FOR WIRING.
6
GROUNDING THE GND TERMINAL IS NOT RECOMMENDED.
7
CONNECTION FOR CM8900A REMOTE COMMUNICATIONS MODULE.
Fig. 13. Hookup diagram for heating/cooling intermittent pilot gas burning ignition system.
W8900A,C
CO
2
1
7
2
3
4
GND
C
R
2
RH
RC
HUM
HUM
VNT
VNT
MV MV/PV PV
MAIN
VALVE SENSOR
IGNITER
PILOT
BURNER
GROUND
PILOT GAS
SUPPLY
2
11
C7189A REMOTE AIR
TEMPERATURE SENSOR
C7100 DISCHARGE AIR
TEMPERATURE SENSOR
S1
S
T1
T
OUT
OUT
LED
FAN RELAY
G
Y2
STAGE 1
Y1
COOL RELAY
W1
W2
S8610U
GND
24V
(BURNER)
GND 24V TH-W
LIMIT
CONTROLLER
C7089A OUTDOOR AIR
TEMPERATURE SENSOR
VENT
DAMPER
SPARK
PLUG SENSE
D892 VENT
DAMPER
M4489D
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