Table of Contents
Advertisement
7
Field wiring
ELECTRICAL SHOCK HAZARD – For
WARNING
your safety, turn off electrical power supply
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.
NOTICE
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.
Label all wires prior to disconnection when
CAUTION
servicing controls.
cause improper and dangerous operation.
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.
Figure 7-1 Boiler Line Voltage Field Wiring Connections
NEUTRAL W
GROUND G
LINE BK
SYSTEM PUMP
DRY CONTACT
BOILER PUMP
DRY CONTACT
HWG PUMP
DRY CONTACT
38
Line voltage connections
1. Connect 120 VAC power wiring to the line voltage terminal
2. Provide and install a fused disconnect or service switch
3. When connecting the boiler, system and hot water generator
4. For alternate voltages, consult factory.
Wiring errors can
SERVICE SWITCH
CONTACTOR
(FIELD SUPPLIED)
Installation & Operation Manual
strip in the junction box, as shown in FIG. 7-1.
sized per the boiler amp draw (shown on the boiler rating
plate) as required by the code (see FIG. 7-1).
pumps connect the wiring to the line voltage terminal strip
as shown in FIG. 7-1.
Maximum current is 1.5 amps.
Install a field supplied contactor between the pump(s) and
the boiler connections.
IMG00319
Advertisement
Table of Contents
