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Installation & Operation Manual
7 Field wiring
1 ALARM
LBL20052 REV B
30 SHIELD GND
MOD BUS
0 - 10V INPUT
2 CONTACTS
3 RUN TIME
4 CONTACTS
5 LOUVER
6 PROVING
7 MODULE 2
8 FLOW SWITCH
9 MODULE 1
10 FLOW SWITCH
29 A
26 SENSOR
25 TANK
24 SENSOR
23 OUT DOOR
22 SENSOR
21 SYSTEM
20 (-)
19 (+)
18 SHIELD GND
17 B
16 A
15 SHIELD GND
14 W
13 R
11 TANK
12 THERMOSTAT
28 B
27 SHIELD GND
CASCADE
ENABLE
A
B
A
B
A
B
BUILDING
MANAGEMENT
SYSTEM
LOUVER
PROVING
SWITCH
TANK
THERMOSTAT
EXTERNAL
CONTROL
SYSTEM SENSOR
TST2032
OUTDOOR SENSOR
TST2303
TANK SENSOR
TST2032
SHIELD
SHIELD
FROM PREVIOUS BOILER
TO NEXT BOILER
SHIELD
MODULE 2
MODULE 1
Figure 7-3 Low Voltage Field Wiring Connections
38