Gems Lattner, Instruction Manual

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9
Note: For Models 159 and 159S, use terminals
5 and 6 for pump #2.
WIRING DIAGRAMS
For Motorized Valves, refer to the valve manufacturer's wiring instructions.
Low Water Cut-Off Only
1. Main Line Switch - For burner circuits within the
switch’s electrical rating.
Pump Control Only
1. Main Line Switch - For pump motors within the
switch’s electrical rating.
1. Main Line Switch - For burner circuits within
the switch’s electrical rating.
2. Pilot Switch - To holding coil of a starter when
the burner circuit exceeds the switch’s electrical
rating.
2. Pilot Switch - To holding coil of a starter when
the pump circuit exceeds the switch’s electrical
rating.
LINE LOAD
1 2 4 5 6
LINE LOAD
1 2 4 5 6
1 2 4 5 6
ALARM
NEUTRAL
HOT
ALARM
NEUTRAL
HOT
1 2 4 5 6
1 2 4 5 6
SEE PUMP
CONTROL
CIRCUIT
TO NEUTRAL
TO BURNER CONTROL CIRCUIT
HOT
ALARM
1 2 4 5 6
LOAD
LINE (3 PHASE)
SEE PUMP
CONTROL
CIRCUIT
ALARM
1 2 4 5 6
LOAD
LINE
1 2 4 5 6
LOAD
LINE
OR
OR
OR
OR
Combination Pump Control, Low Water Cut-Off and Alarm
Alarm Circuit Only
1. Low Water Alarm 2. High Water Alarm
2. Pilot Switch - To holding coil of a starter when
the burner circuit exceeds the switch’s electrical
rating.
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