Weil-McLain GOLD CGS 550-110-260/02002 - Manual (Page 26)

Part number 550-110-260/0200
26
GOLD CGs Gas-Fired Water Boiler
Figure 15
Field wiring connections —
service switch and thermostat
(or end switch) provided by
installer
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.
Field wiring
6
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.
Field wiring
F
actory wiring
Service
switch
(not provided)
Junction box,
boiler left side
T h e r m o s t a t
leads, through
jacket left side
Service
switch
(not provided)
Thermostat
or end switch
(not provided)
Thermostat
or end switch
(not provided)
Black White Green
Ground screw Wire nuts
Black Black
120 VAC
Hot
Neutral Ground
26021
The CGs control module is
polarity-sensitive. The hot and
neutral wires must be connected to
the correct leads. A flashing
POWER
light usually indicates reversed
polarity of 120 VAC lead wires.
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
requirements of equipment connected to it. If
connected directly to boiler, set for 0.4 amps. For
other 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
Figure 15.
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.
Wiring connections
Boiler is shipped with controls completely wired.
Electrical installation
must comply with:
Wiring must be N.E.C. Class 1.
If original wiring as supplied with
boiler must be replaced, use only
type
105 °C wire or equivalent.
Boiler must be electrically
grounded as required by National
Electrical Code ANSI/NFPA 70 –
latest edition.