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Part Number 550-110-639/0703
15
EG, PEG, EGH GAS-FIRED BOILERS — SERIES 4 — BOILER MANUAL
Wiring
6
Refer to control supplement for
additional information
For your safety, turn off electrical power
supply before making any electrical
connections to avoid possible electrical
shock hazard.
All wiring must be installed in accordance with
requirements of National Electrical Code and any
additional national, state or local code requirements
having jurisdiction. ALL wiring must be N.E.C. Class 1.
Boiler must be electrically grounded in accordance with
National Electrical Code, ANSI/NFPA No. 70-latest
edition.
In Canada, installation must conform to CSA C22.1
Canadian Electrical Code Part 1 and any local codes.
If original rollout thermal fuse element wire as supplied
with boiler must be replaced, type 200°C wire or equivalent
must be used. If other original wiring as supplied with
boiler must be replaced, type 105°C wire or equivalent
must be used.
Installer must attach wiring diagram inside jacket door.
A separate electrical circuit with a fused disconnect switch
(15 amp. recommended) should be used for the boiler.
A strain relief bushing and adapter must be used at each
point where wiring passes through control case (see Figure
23) to protect wiring insulation.
Refer to zone valve manufacturer’s literature for wiring
and application. A separate transformer is required to
power zone valves. Zoning with circulators requires a
relay for each circuit.
Install room thermostat
Install room thermostat on an inside wall. Never install
where it will be influenced by drafts, hot or cold water
pipes, lighting fixtures, television, rays of the sun or near
a fireplace.
Refer to Control Supplement or correct wiring diagram
for recommended heat anticipator setting with Standard
equipment. Wire thermostat as shown.
Figure 23 Wiring multiple zones