Wiring Diagrams; W8900A,C Hookup Diagrams - Honeywell PC8900A Manual

WIRING DIAGRAMS

W8900A,C Hookup Diagrams

CO MONITOR
2
PC8900
1
2
3
4
6
1
L2
L1
(HOT)
HEATING
TRANSFORMER
3
HUMIDIFIER
OR DEHUMIDIFIER
EQUIPMENT
5
VENTILATION
EQUIPMENT
L1
(HOT)
L2
1
COOLING
TRANSFORMER
Fig. 11. Hookup diagram for heating/cooling system in conventional system with multiple transformers.
W8900A,C
4
CO
2
1
2
3
4
GND
C
R
2
RH
RC
HUM
HUM
VNT
VNT
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
JUMPER R TO RH FOR SINGLE HEAT TRANSFORMER APPLICATIONS.
3
CONFIGURE PC8900 FOR HUMIDITY CONTROL IN HEATING MODE
(HUMIDIFIER) OR COOLING MODE (DEHUMIDIFIER) DURING INSTALLER SETUP .
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.
CONNECTION FOR CM8900A REMOTE COMMUNICATIONS MODULE.
7
C7189A REMOTE AIR
TEMPERATURE SENSOR
S1
S
T1
T
OUT
OUT
7
FAN RELAY
LED
STAGE 2
COOL RELAY
G
STAGE 1
Y2
COOL RELAY
Y1
STAGE 1
W1
HEAT RELAY
W2
STAGE 2
HEAT RELAY
2
9
C7100 DISCHARGE AIR
TEMPERATURE SENSOR
C7089A OUTDOOR AIR
TEMPERATURE SENSOR
M4479D
68-0173—3