Application Brochure

7 of 16 © 2013 654_A - 06/13
Single Zone with Modulating Steam Valve A654-3 Electrical
LNG
115 V (ac)
Snow / Ice Sensor
090 or 094
Outdoor
Sensor
070
Supply
Sensor
082
Relay 003
Optional
tN4
Communication
Snow
Sensor 095
Slab Sensor
072 or 073
Slab
Brn
Slab
Brn
Com
BlkYel Blu Red
Com
BlkYel Blu Red
Or And/Or
Snow
Sensor
095
2
1
8
7
3
4
5
6
Slab
Brn
+
Mod tN4Aux Ht R C
Bret
Out/
Com–
BlkYel Blu Red Sup
No Power
Modulating
Steam Valve
System
Pump
–
+
C
tN4
Transformer 009
L
N
R
C