Burnham Indirect - Fired Water Heater AL SL - Manual (Page 15)

5
Zone Valve Wiring Diagrams
Wiring for 3 Wire Zone Valve
L o w V oltage
120 V olts
120v
24v
B oiler
C onnec tions
T
1
T
2 3
H ot N eutr al Z one V alv e
120v
24v
T o B oiler C onnec tions /C ir cula t or
H ot N eutr al
4 W ir e Z one V alv e
M ot or
E nd S wit ch
T T
T emperature Differential
P ump/T T 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20 °
15 °
10 °
5 °
160 °
150 °
140 °
130 °
120 °
1 10 °
P r ob e
T emperature Differential
P ump/T T 24v
LED
flashing green = calling for heat
solid green = at temperature
red = error
20 °
15 °
10 °
5 °
160 °
150 °
140 °
130 °
120 °
1 10 °
P r ob e
® ®
® ®
Wiring for 4 Zone Valve