Electric Power Supply; Vent Damper Wiring; Circulator Wiring - ECR Dunkirk PWB Series Manual

Electrical work must be in accordance with require-
ments of authority having jurisdiction or, in absence
of such requirements, with National Electrical Code,
ANSI/NFPA 70.

ELECTRIC POWER SUPPLY

Run a separate 120 volt circuit from a separate over
current protective device in the electrical service en-
trance panel. This should be a 15 ampere circuit. Lo-
cate a shut-off switch at the boiler. It must be turned
off during any maintenance. Connect 120 volt 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 National Electrical Code,
ANSI/NFPA No. 70. Run a 14 gauge or heavier cop-
per wire from the boiler to a grounded connection in
the service panel or a properly driven and electrically
grounded ground rod.
Turn off electric power at fuse box before
!
making any line voltage connections. Fol-
low local electrical codes.
INSTALL YOUR THERMOSTAT
The thermostat location has an important effect on the
operation of your boiler system. BE SURE TO FOLLOW THE
INSTRUCTIONS INCLUDED WITH YOUR THERMOSTAT.
ELECTRICAL WIRING
WARNING
Locate the thermostat about fi ve feet above the fl oor
on an inside wall. It may be mounted directly on the
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 .2 amps. 24 volt thermostat
connects to aquastat terminals T and TV.

VENT DAMPER WIRING

Boiler equipped with factory wired harness with 4 pin
molex plug, that plugs into 4 pin molex receptacle
inside vent damper operator.
Vent damper must be connected for boiler to
operate.
Wiring diagrams follow for various different models.

CIRCULATOR WIRING

Pump is not pre-installed on boiler. Connect
circulator harness per pump manufacturer's
instructions and wiring diagrams in this manual.
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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CAUTION