Electrical Section - Columbia MCB50 Installation, Operation & Maintenance Manual

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.
ELECTRICAL WIRING
See wiring diagrams on the following two pages for
details.
Electrically bond boiler to ground in accordance with
requirements of authority having jurisdiction. Refer to:
• USA- National Electrical Code, ANSI/NFPA 70.
• Canada - Canadian Electrical Code, Part I, CSA C22.1:
Safety Standard for Electrical Installations.
THERMOSTAT INSTALLATION
1.
Thermostat should be installed on an inside wall about
four feet above the floor.
2.
NEVER install a thermostat on an outside wall.
3.
Do not install a thermostat where it will be affected
by drafts, hot or cold pipes, sunlight, lighting fixtures,
televisions, a fireplace, or a chimney.
4.
Check thermostat operation by raising and lowering
thermostat setting as required to start and stop the
burners.
5.
Instructions for the final adjustment of the thermostat
are packaged with the thermostat (adjusting heating
anticipator, calibration, etc.)

ELECTRICAL SECTION

WARNING
15