SECTION 12: C
ONTROL
M
ETHODS
43
FIGURE 26: One Zone Operation without Control Panel
1
2
3
4
5
6
COIL
COIL
R
C
W G
Y
Thermostat
Pump
Motor
Pressure
Switch
(Pump)
SPST (12A)
Transformer
Relay
Zone 1
Burners
N
L
L
N
Nine Burners Maximum
Black
White
Red
Black
L
120 V
1 Ø
60 Hz
N
Ground
Description
Part Number
SPST Transformer Relay
90417600