20
9. External Wiring
Section IX: External Wiring
9.1 Installation Compliance
All field wiring made during installation must comply with:
National Electrical Code (NFPA 70) and any other national,
1.
state, provincial, or local codes or requirements.
In Canada, Canadian Electrical Code Part 1 (CSA C22.1) and any
2.
other local codes.
9.2 Line Voltage Connections
Connect a 120 VAC/15A service to the 120V terminals L, N, and
1.
G inside the CHALLENGER as shown in Fig. 12 on page 19.
Route the incoming 120 VAC power wire through the provided
2.
openings in the bottom right side jacket panel.
The appliance must be provided with an external service switch.
3.
Check local code requirements for compliance.
9.3 Circulator Maximum Current Rating
The AMP draw of the CH/DHW circulators must not exceed 2.3 amps
9.4 Central Heating (CH) Circulator
Wire the CH circulator to the CHALLENGER 120 V terminals 1,2,
4.
and 3 located inside the appliance as shown in Fig. 12 on page
19.
Maximum CH circulator continous current draw is 2.3 A.
5.
9.5 DHW Circulator for Optional SMART/COMFORT I.F.W.H.
Wire the DHW circulator to the CHALLENGER 120 V terminals 4,
1.
5, and 6 located inside the appliance as shown in Fig. 12 on page
19.
Maximum DHW circulator continuous current draw is 2.3 A.
2.
9.6 System Circulator - Zone Valve Application
To energize the system circulator shown as item 11 in Fig. 8 on page
14, reference Fig. 14 on page 21. Installer to provide a
Transformer/Relay such as Honeywell R8285 or equivalent and Zone
Valves with isolated end switch such as Honeywell V8043 or
equivalent.
9.7 Low Voltage Connections
Open the display cover and unscrew both screws to remove the
1.
front cover, see Fig. 13.
Pull the control/display forward until it tips downwards to
2.
provide access to the low voltage terminal strip, see Fig. 13.
Ensure field installed low voltage wiring is not run parallel or next
3.
to telephone or power wiring.
Consult Table 4 for making low voltage connections.
4.
ELECTRICAL SHOCK HAZARD
For your safety, disconnect electrical power supply to
the appliance before servicing or making any electrical
connections to avoid possible electric shock hazard.
Failure to do so can result in substantial property dam-
age, serious injury, or death.
WARNING
The installer must provide and install a fused discon-
nect or minimum 15 amp service switch. Check local
electrical code requirements for compliance.
The ON/OFF switch of the CHALLENGER only disables
the function of the appliance. Electrical power remains
at the control module. To avoid a shock hazard, discon-
nect power at the external service switch when servic-
ing the appliance.
WARNING
Table 4: Low Voltage Electrical Connections
5 – 6
Voltage free
Fuse
Control/Display
A
Fig. 13: Accessing Low Voltage X4 Connections
Low Voltage Devices
Connector X4 Notes
Room thermostat
7-8
Voltage Free
Outdoor temperature sensor
9-10
-
SMART/COMFORT
Aquastat (Optional)
5-6
Voltage Free
NOTICE
Summary of Contents for CC105s
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