12
FIgurE 3: relay Output box
MB108
MB123
Low Water Temp Alarm
High Water Temp Alarm
Water Level Alarm
Superheat Alarm
Optional PRV #2
Heater Contactor
Not Used
Solenoid
PRV #1
High Pressure Alarm
Ground (Green)
Line 1 (Black)
Connect
PRV #1 Here
Line 2 (Red)
Solenoid
Line 2
Contactor
Line 2 (Red)
Line 2 (Red)
Line 2 (Red)