Service manual

MSE Series Electric Boilers – Installation and Service Manual

Wiring Section 3

3.1 ELECTRICAL WIRING

All electrical wiring must be done in accordance with the Canadian Electrical Code, CSA C22.1 Part 1,

and/or any local regulations and codes in Canada, or the National Electrical code, ANSI/NFPA 70 (latest

edition) and/or any local regulations and codes in U.S.A.. Verify the nameplate rating and check the

related codes to properly size conductors, switches and overcurrent protection. Several openings are

provided on the right and bottom of the casing for different voltage connections. For wire connections

refer to the wiring diagram sticker on the back of the boiler front casing panel.

WARNING – Risk of Electric Shock: Disconnect all electrical power before installation or service!

All circuit breakers ahead of and at the boiler must be OFF. Remove the boiler front casing panel by

removing the screws at the top and bottom.

a. Wiring on Controller

Figure 3 - Terminal blocks