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To install power to the boiler, rst 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 V.A.C. 60 Hz maximum high voltage, and 113 V.A.C. 60 Hz minimum low voltage.The furnace will
continue to operate at voltages as low as 105 V.A.C. , 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 120V.A.C. 60Hz. power stable enough to operate the control
board properly. (Control board damage could occur).