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LP-542 REV. 7.16.15
Figure 28 – Wiring External LWCO to the Boiler
PART 9 – CONNECT ELECTRICAL POWER / INITIAL STARTUP
Install wiring and electrically ground boiler in accordance with the authority having jurisdiction or, in the absence of such an authority,
follow the National Electrical Code, NFPA 70, and/or CSA C22.1 Electrical Code-Part 1 in Canada. Failure to follow all applicable local,
state, and national regulations, mandates, and building supply codes for guidelines to install the electrical power supply could result in
property damage, serious personal injury, or death.
ELECTRICAL SHOCK HAZARD – To ensure safety, turn off electrical power supply at service entrance panel before making any
electrical connections to avoid possible electric shock hazard. Failure to do so could result in property damage, serious personal injury,
or death.
A. GENERAL OPERATING CONDITIONS
Temperature
o Operating Ambient Temperature Range: 14 – 140
o
F (-10 to 60
o
C)
o Operating Relative Humidity: Up to 90% at 104
o
F (40
o
C)
B. WIRING INFORMATION
1. This boiler must be properly grounded. Ensure the electrical outlet (120V / 15 Amp minimum) that the boiler will be plugged into is
properly grounded.
2. Do not attach the ground wire to either the gas or water piping as plastic pipe or dielectric unions may isolate the boiler electrically.
This boiler is equipped with a three prong plug. It should only be plugged directly into a properly grounded three prong receptacle. DO
NOT remove the ground plug from the plug. Doing so could result in property damage, serious personal injury, or death.
3. The wiring diagrams contained in this manual are to be used for reference purposes only.
4. Refer to these diagrams and the wiring diagrams of any external controls used with the installation when wiring the boiler. Read,
understand, and follow all wiring instructions supplied with the controls.
5. Do not disconnect the power supply when the boiler is in normal operation.
6. Freeze related damage IS NOT covered under warranty.
NOTE: For additional electrical protection, the use of a surge protector is recommended. Damage caused by power surges is not
covered by the warranty.
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