Table of Contents
Advertisement
CO
MONITOR
4
2
PC8900
1
2
3
4
9
HUMIDIFIER OR
3
DEHUMIDIFIER
EQUIPMENT
VENTILATION
8
EQUIPMENT
1
L2
L1
(HOT)
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
USE ONE R8239 FOR EVERY FOUR ZONES.
6
USE FOR 3-WIRE ZONE VALVE OR DAMPERS.
ZONES 2, 3, 4 CAN BE CONTROLLED BY ADDITIONAL PC8900/W8900 OR OTHER THERMOSTATS.
7
8
SEE VENTILATION INSTRUCTIONS FOR WIRING.
9
GROUNDING THE GND TERMINAL IS NOT RECOMMENDED.
10
CONNECTION FOR CM8900A REMOTE COMMUNICATIONS MODULE.
Fig. 14. Hookup diagram for 3-wire zone valves in Series 20 heating system with zone controls.
68-0173—3
W8900A,C
CO
2
1
2
3
4
GND
C
R
2
RH
RC
HUM
HUM
VNT
VNT
ZONE 2 THERMOSTAT
W
5
R8239A1052
C
Y
G
W
R
24V
ZONE 1
VALVE
2
C7189A REMOTE AIR
TEMPERATURE SENSOR
S1
S
T1
T
OUT
OUT
10
LED
G
Y2
Y1
W1
W2
7
7
ZONE 3 THERMOSTAT
G
C
G
R
W
R8222B1067
R8222B1067
6
6
ZONE 2
VALVE
12
C7100 DISCHARGE AIR
TEMPERATURE SENSOR
C7089A OUTDOOR AIR
TEMPERATURE SENSOR
7
ZONE 4 THERMOSTAT
C
G
C
R
W
R
R8222B1067
6
ZONE 3
VALVE
ZONE 4
VALVE
M4491D
Hide quick links:
Advertisement
Table of Contents
