Elite EL-110 LP, Руководство по установке

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40
Boiler Manual
PART 8: FIELD WIRING
A. 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.
B. FIELD WIRING
All connections made to the Elite Heating
Boiler
®
in the field are done inside the electrical
junction box located on the side of the unit. The
electrical junction box is located on the left side
of Elite Heating Boiler
®
. Multiple knockout loca-
tions are available to route field wires into and
out of the electrical junction box.
The control used in the Elite Heating Boiler
®
series of boilers is capable of directly controlling
2 pumps when in standard mode and 3 pumps
when configured as a cascade master boiler.
When configured as a standard unit, each pump
output can provide a maximum of 3 amps at 120
volts. If pumps used require more than this
amount of power, an external contactor or
motor starter is needed. If the boiler is config-
ured as a cascade master, the system pump out-
put is a dry contact output capable of switching
5 amps at 120 volts in addition to the boiler
pump and DHW pump outputs sourcing 3 amps
each.
The electrical junction box has separate, clearly
marked terminal strips for line voltage and low
voltage wiring. Special jacks are provided for
trouble-free cascade system wiring using stan-
dard CAT3 or CAT5 patch cables.
C. LINE VOLTAGE WIRING FOR
STANDARD BOILER
1. Connect the incoming power wiring to the
line voltage terminal strip in the electrical
junction box at terminals 120V, Neutral,
Ground (shown in figure 8-1.)
2. A line voltage fused disconnect switch may
be required to be externally mounted and
connected according to local codes that may
apply.
3. Connect the central heating pump as shown
in Figure 8-1 to the terminals marked BOILER
HOT, BOILER NEUT, BOILER GND. The
connections shown are suitable for a
maximum continuous pump draw of 3 amps
at 120 volts. If a the pump requires more
current or voltage other than the 120 volts
supplied, an external motor starter or
contactor will be required.
4. If using DHW, connect the domestic hot water
pump as shown in Figure 8-1 to the terminals
marked DHW HOT, DHW NEUT, DHW GND.
The connections shown are suitable for a
maximum continuous pump draw of 3 amps
at 120 volts. If a pump that requires more
current or voltage other than 120 volts
supplied, an external motor starter or
contactor will be required.
n
WARNING
ELECTRICAL SHOCK HAZARD — 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.
NOTICE
Wiring must be N.E.C. Class 1.
If original wiring as supplied with boiler must be
replaced, use only TEW 105 °C wire or
equivalent.
Boiler must be electrically grounded as required
by National Electrical Code ANSI/NFPA 70 —
latest edition.