Field Wiring - Weil-McLain GOLD CGt Manual

GOLD CGt Gas-Fired Water Boiler — Boiler Manual
6

Field wiring

For your 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 can cause severe personal injury or
death.
Wiring must be N.E.C. Class 1.
If original rollout thermal fuse element wire as supplied
with boiler must be replaced, use only type
or equivalent. If other original wiring as supplied with
boiler must be replaced, type
must be used.
Boiler must be
National Electrical Code ANSI/NFPA 70–latest edition.
Electrical installation must comply with:
1. National Electrical Code and any other national, state, provincial or
local codes or regulations.
2. In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local
codes.
Wiring connections
Boiler is shipped with controls completely wired. You must connect the
ambient temperature switch
the boiler is in place. See page 6 for switch location and mounting. The
factory-supplied wires are 4-feet long. Splice additional wire if needed.
Figure 25 Field wiring connections — service switch and thermostat (or end switch) provided by installer
The CGt control module is polarity-sensitive. The hot and neutral wires must be connected to the correct leads.
A flashing
(not provided)
Part Number 550-110-290/0501
wire or equivalent
105 °C
electrically grounded
wires (page 3, item 10) to the switch after
light usually indicates reversed polarity of 120 VAC lead wires.
POWER
120 VAC
Hot Neutral
Service
switch
Black White
Junction box,
boiler left side
Thermostat
1. Connect thermostat as shown on wiring diagram
on boiler.
2.
Install on inside wall away from influences of
drafts, hot or cold water pipes, lighting fixtures,
television, sunrays, or fireplaces.
3. If thermostat has a heat anticipator, set heat
anticipator in thermostat to match power
wire
200 °C
requirements of equipment connected to it. If
connected directly to boiler, set for 0.1 amps plus
gas valve current. See information on wiring
diagram as shown in
as required by
devices, refer to manufacturer's specifications.
Wiring diagram on boiler gives setting for control
module and gas valve. Also see instructions with
thermostat.
Junction Box (furnished)
1. Connect 120 VAC power wiring as shown in
.
25
2. Fused disconnect or service switch (15 amp.
recommended) may be mounted on this box. For
those installations with local codes which prohibit
installation of fused disconnect or service switch
on boiler, install a 2 x 4 cover plate on the boiler
junction box and mount the service switch
remotely as required by the code.
Ground
Thermostat
or end switch
(not provided)
Ground screw
Green Black
T h e r m o s t a t
leads, through
jacket left side
071029
, page 35. For other
Figure 29
Thermostat
or end switch
Wire nuts
Black
Figure
Service
switch
(not provided)
(not provided)
29