Weil-McLain CGS-4E Manual

A SERVICE OF

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Part number 550-110-282/1108

26

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CGs-4E Gas-Fired Water Boiler — Boiler Manual

Field wiring6

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 antici-

pator 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 (continued)

1. Connect 120VACpower wiringasshownin

Figure 15.

2. Fused disconnect or service switch (15 amp. recom-

mended) may be mounted on this box. For those

installations with local codes which prohibit installa-

tion 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.

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 wiring as supplied with boiler must be re-

placed, use only type 105°C wire or equivalent.

 Boilermustbe

electrically grounded as required by

NationalElectricalCodeANSI/NFPA70–latestedi-

tion.

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.

Figure 15

Field wiring connections —

service switch and thermostat

(or end switch)

provided by installer

 TheCGs-4Econtrolmoduleispolarity-sensitive.Thehotandneutralwiresmustbeconnected

tothecorrectleads.AashingPOWER lightusuallyindicatesreversedpolarityof120VAClead

wires.