Honeywell PC8900A Manual page 15

CO MONITOR
2
COMPRESSOR
MONITOR
PC8900
1
2
3
4
9
1
L2
L1
(HOT)
SYSTEM
TRANSFORMER
HUMIDIFIER OR
3
DEHUMIDIFIER
EQUIPMENT
VENTILATION
8
EQUIPMENT
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
1
OVERLOAD PROTECTION AS REQUIRED.
JUMPER R TO RH.
2
DURING INSTALLER SETUP, CONFIGURE PC8900 FOR HUMIDITY CONTROL IN HEATING MODE
3
(HUMIDIFIER) OR COOLING MODE (DEHUMIDIFIER).
W8900 ALLOWS CONNECTION OF A CO MONITOR WITH UNCOMMITTED CONTACTS.
4
5
CONFIGURE PC8900 FOR CHANGEOVER IN HEATING MODE OR COOLING MODE.
6
JUMPER Y2 AND W2 TERMINALS.
7
IF NO EMERGENCY HEAT RELAY, FIELD INSTALL JUMPER E TO AUX.
SEE VENTILATION INSTRUCTIONS FOR WIRING.
8
9
GROUNDING THE GND TERMINAL IS NOT RECOMMENDED.
CONNECTION FOR CM8900A REMOTE COMMUNICATIONS MODULE.
10
Fig. 17. Hookup diagram of 3-stage heat/2-stage cool heat pump system.
4
W8900B
CO
2
L
1
10
2
3
4
GND
C
R 2
RH
HUM
HUM
VNT
VNT
6
2
15
C7189A REMOTE AIR
TEMPERATURE SENSOR
C7100 DISCHARGE AIR
TEMPERATURE SENSOR
S1
S
T1
T
OUT
OUT
CHANGEOVER
RELAY
LED
FAN RELAY
O/B
STAGE 2
G
COMPRESSOR
Y2
Y1/W1
E STAGE 1
COMPRESSOR
AUX
W2
EMERGENCY
HEAT RELAY
AUXILIARY
HEAT RELAY
C7089A OUTDOOR AIR
TEMPERATURE SENSOR
5
7
M4485D
68-0173—3