6. ELECTRICAL
Install all electrical wiring in accordance with the National Electrical Code and local requirements
This unit when installed must be electrically grounded in accordance with the requirements of the authority
having jurisdiction or, in the absence of such requirements, with the current edition of the National Electrical
Code, ANSI/NFPA 70.
r_'l WJl;i h_[€
]. See Figure 14 for location of wiring and controls.
Use Figure 15 to connect the boiler to a power
supply and to connect components to the boiler,
2. Connect the boiler by a separate, permanently live
electrical supply line with a fused switch.
3. Adjust the thermostat heat anticipator to 0.2 Amp.
:]1 W[e)L_I:IB]k"5"_"]ll:lL'JI_IiIil:|l_[C
See Figure 17 for typical wiring with zone valves. See
Figure 18 for typical wiring with zone circulators. When
wiring a zoned heating system, follow all applicable
codes, ordinances and regulations
I. For proper location of controls and accessories refer
to Figure 14
2. See the attached control sheets for specific details
regarding the installation of the various controls.
3. This boiler is supplied with safety devices in addition
to the limit. For a description of these devices and
how they work to ensure the safe operation of the
boiler, see Section 7.
4. If the circulator is mounted in the supply piping,
provide longer wiring harness as required.
Do not power zone valves directly from the boiler
transformer. Doing so will greatly reduce the life of
the transformer. Use a separate transformer sized to
handle the total of all zone valve electrical loads.
TO LINE VOLTAGE THERMOSTAT
POWER SUPPLY_
LIMIT CONTROL
PRESSURE
GAUGE
PRESSURE
SWITCH
GAS
ER RELAY
CENTER
RELAY
FLAME ROLLOUT SWITCH
Figure 14: Wiring, Controls and Safety Devices
15
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