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switch junction box and power supply connection points. Connect black (hot) lead from the power
supply to either of the unused brass screws on the service switch. Connect the white (neutral) lead
from the power supply to the white screw on the service switch. Connect the green (ground) lead
from the power supply to the ground (green) screw on the service switch. The receptacle on the
service switch is always powered regardless of whether the switch is on or off, and could be used
as a power supply for an external condensate pump if one is used.
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 National
Electrical Code, ANSI/NFPA-70, latest revision. In Canada, electrical wiring shall comply with
the Canadian Electrical Codes, CSA-C22.1 and .2.
Run a 14 gauge or heavier copper wire from the boiler to a grounded connection in the service
panel or a properly driven and electrically grounded ground rod.
B. INSTALL YOUR THERMOSTAT
The thermostat location has an important effect on the operation of your boiler system. BE SURE
TO FOLLOW THE INSTRUCTIONS INCLUDED WITtt YOUR THERMOSTAT.
Locate the thermostat about five feet above the floor on an inside wall. It may be mounted directly
on the wall or on a vertical mounted outlet box. It should be sensing average room temperature.
Avoid the Following:
DEAD SPOTS:
Behind doors
Corners and alcoves
COLD SPOTS:
Concealed pipes or ducts
Stairwells - drafts
Unheated rooms on
other side of wall
HOT SPOTS:
Concealed pipes Lamps
Fireplace Direct sunlight
TV sets Kitchens
Radios
Set heat anticipator at 0.7 amps. Connect 24 volt thermostat leads to the two(2) yellow wires
located in service switch junction box, located on outer jacket of boiler. See Fig.13 for service
switch junction box and thermostat field wiring connections.
C. Connect Circulator Pump Wiring
See Fig.13 for service switch junction box and circulator pump field wiring connections. A 5 feet
wiring harness with flexible metal conduit is supplied to connect the circulator pump to the service
switch junction box. If the two 120 volt circulator wire terminals inside the junction box are not
used, please leave the two wire nuts to prevent the short circuit.
CAUTION
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS.
WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION. VERIFY
PROPER OPERATION AFTER SERVICING.
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