![background image](http://html1.mh-extra.com/html/farmtek/mwh-180/mwh-180_installation-and-operating-instructions-manual_545504059.webp)
- 57 -
ELECTRICAL CONNECTION
• MWH-180 requires 120V AC at 60Hz.
Disconnect the power supply if the unit is not in use for a long time.
• Remove residual water in the unit when the power supply is off because the freeze prevention in
the unit will not activate, resulting in possible freezing damage.
• Do not let the power cord contact the gas piping.
• The grounding screw is located in the junction box attached to the outside of bottom plate.
• To prevent electrical shock, provide a ground with resistance less than 100
Ω
. An electrician
should do this work.
Power supply lead wire
Junction box
Ground terminal
(Grounding screw)
Surge protector
Power supply lead wire
(Black-hot / White-neutral)
Summary of Contents for MWH-180
Page 60: ... 58 WIRING DIAGRAM ...
Page 61: ... 59 WIRING DIAGRAM ...