Operating instructions

All electrical work must conform to local codes as well as the National Electrical Code (NEC) ANSI/NFPA-70-2002. In Canada, electrical wiring
shall comply with the Canadian Electrical Codes CSA C22.1 and 2.
PROCEDURE 1—ELECTRIC POWER SUPPLY
WARNING: Turn off electric power at fuse box before making any line voltage connections. Follow local electric
codes. Failure to follow this warning could result in electrical shock, personal injury, or death.
Run a separate 120-v circuit from a separate overcurrent protective device in electrical service entrance panel. This should be a 15-amp circuit.
Locate a shutoff switch at boiler. It must be turned off during any maintenance. Connect 120-v power supply to aquastat terminals L1 (HOT) and
L2.
The boiler, when installed, must be electrically grounded in accordance with the requirements of the authority having jurisdiction, or in the absence
of such requirements, with the NEC ANSI/NFPA-70-2002. Run a 14 gauge or heavier copper wire from boiler to a grounded connection in service
panel or a properly driven and electrically grounded ground rod.
PROCEDURE 2—INSTALLING THERMOSTAT
The thermostat location has an important effect on operation of boiler system. BE SURE TO FOLLOW INSTRUCTIONS INCLUDED WITH
THERMOSTAT.
Locate thermostat about 5 ft above floor on an inside wall. It may be mounted directly on wall or on a vertically mounted outlet box. It should
be sensing average room temperature so avoid the following:
DEAD SPOTS:
Behind doors
Corners and alcoves
HOT SPOTS:
Concealed pipes
Fireplace
TV sets
Radios
Lamps
Direct sunlight
Kitchens
COLD SPOTS:
Concealed pipes or ducts
Stairwells—drafts
Doors—drafts
Unheated rooms on other side of wall
Set heat anticipator at 0.2 amps. The 24-v thermostat connects to aquastat terminals T and TV.
PROCEDURE 3—VENT DAMPER WIRING
The boiler is equipped with a factory-wired harness with a 4-pin Molex plug which plugs into 4-pin Molex receptacle inside vent damper operator.
The vent damper must be connected for boiler to operate.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
PROCEDURE 4—CIRCULATOR PUMP
The pump does not come pre-installed on boiler. It must be connected to circulator harness in the field according to pump manufacturer’s
instructions and wiring diagrams in this manual.
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