Weil-McLain Ultra Electric Water Heater - Manual (Page 10)

Part number IWHA016A/1103
10
PLUS Line Instruction Manual Supplement
PLUS & PLUS
WATER HEATERS WITH GAS
-
FIRED WATER BOILERS
Field wiring
(continued)
3
Figure 9 Low voltage field wiring connections
Summer/winter switch (item 7) — Install a summer/winter switch, if desired, to disable the boiler
(space heating) circulator during non-heating months. Connect switch across the outdoor sensor
terminals. When switch closes, the boiler circulator is disabled and the boiler operates only on call for
DHW heating.