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Main Wiring Installation
To install power to the boiler, first remove the cover on the 4” X 4” junction box located on the back of the unit. There are
several knockout holes provided for the incoming main power wires. Also, a knockout hole can be used for the auxiliary
output overheat zone (if used).
The minimum recommended circuit is 6 AMP - 120 VAC - 60 HZ. This boiler should be the only appliance on the circuit.
This boiler should never be powered by the use of an extension cord.
The recommended high and low voltages are, 130 VAC 60 Hz maximum high voltage, and 113 VAC 60 Hz minimum low
voltage. The furnace will continue to operate at voltages as low as 105 VAC , although it can not be guaranteed that
automatic ignition will occur.
NOTe: If other sources of electrical power are to be used ( such as a generator ) for normal operation or emergency
operation, this source should be checked before installation. Many generators and inverters may not supply 120
VAC, 60Hz power stable enough to operate the control board properly. (Control board damage could occur).
Summary of Contents for PB 105
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