Field Wiring; Line Voltage Connections; Low Voltage Connections - Cadet 40-120 Installation And Service Manual

8

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. Wiring errors can cause
improper and dangerous operation.
Figure 8-1 Remove Metal Junction Box Cover
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.
46

Line voltage connections

1. Remove the cover of the metal junction box as shown in
2. Connect 120 vac power wiring using wire nuts (field
3. Provide and install a fused disconnect or service switch
4. Wire the boiler pump (maximum 1.8 amps) to the
5. When connecting a domestic hot water (DHW) pump

Low voltage connections

1. Route all low voltage wires through the knockouts in the
bottom front right side, just under the control panel, as
shown in FIG. 8-2.
2. Connect low voltage wiring to low voltage connection board
as shown in FIG. 8-3 on page 48 of this manual and the
boiler wiring diagram.
NOTICE
Figure 8-2 Routing Field Wiring
HIGH VOLTAGE
JUNCTION BOX
IMG00269
Installation & Service Manual
FIG. 8-1.
supplied) to the labeled line voltage terminal wires in the
junction box.
(15 amp recommended) as required by the code.
labeled wires inside the junction box.
(maximum 1.8 amps), connect using field supplied wire
nuts to the labeled wires inside the junction box.
Do not run low voltage wires next to high
voltage wires in the same conduit.
LOW VOLTAGE
CONNECTION BOARD
LOW VOLTAGE
WIRING KNOCKOUTS
IMG00246