Electrical; Electrical Wiring; Thermostat Installation - Dunkirk DXL Series Installation, Operation & Maintenance Manual

WARNING
!
Electrical shock hazard. Turn OFF electrical power
supply at service panel before making electrical
connections. Failure to do so could result in death
or serious injury.
WARNING
!
Fire, electrical shock hazard. Verify all electrical
connections are secure. Failure to do so could result
in death or serious injury.

10.1 Electrical Wiring

If an external electrical source is utilized, the boiler,
when installed, must be electrically bonded to ground 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, and/or the
See wiring diagrams on the following pages for
details.
• J-box and circulator harness are shipped in parts box,
and may be wired on either side of boiler as desired.
• Electrically bond boiler to ground in accordance with
requirements of authority having jurisdiction.
Refer to: USA - National Electrical Code, ANSI/NFPA
70.
• Aluminum wiring/conductors not permitted.

10.2 Thermostat Installation

Use a thermostat with dry contacts which does not pull
1.
any load from the control. Use a separate transformer
for zone valve wiring.
Thermostat should be installed on inside wall about
2.
four feet above floor.
NEVER install thermostat on outside wall.
3.
Do not install thermostat where it will be affected by
4.
drafts, hot or cold pipes, sunlight, lighting fixtures,
televisions, fireplace, or chimney.
Check thermostat operation by raising and lowering
5.
thermostat setting as required to start and stop
burners.
Instructions for final adjustment of thermostat
6.
are packaged with thermostat (adjusting heating
anticipator, calibration, etc.)
Thermostat's heat anticipator must be adjusted to
7.
match total current draw of all controls associated with
boiler during heating cycle.

10 - ELECTRICAL

There are two (2) options when using Zone 2 for an
8.
indirect tank or heating zone using the IC control to
power the Zone 2 pump:
a. A Zone 2 wiring kit is available see parts list. This
plugs into the Molex connector for the Zone 2 pump
and provides power leads for the pump.
b. Cut off the end of the Molex connector and wire the
Zone 2 pump leads directly using wire nuts or other
approved electrical connectors.
24 PN 240012787 Rev. C [11/15/2020]