Sussman ES Installation, Operation And Maintenance Manual - page 9
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ALL ELECTRICAL WIRING MUST BE PERFORMED BY A QUALIFIED ELECTRICIAN
IN ACCORDANCE WITH NATIONAL AND LOCAL ELECTRICAL CODES.
Assure that the power voltage and phase being supplied to the boiler
matches the power voltage and phase of the boiler. Connecting incorrect power supply can
damage boiler components or cause improper boiler operation. If the boiler power
requirements do not match the power to be supplied to the boiler the boiler must be
returned to the factory for conversion. Boilers cannot be field converted.
ALL BOILERS ARE PRE-WIRED AND TESTED PRIOR TO SHIPMENT.
1. Ground boiler according to National Electric Code
requirements to avoid shock.
2. Power wiring to boiler should be in accordance with
National and Local Electrical Code requirements fol-
lowing wiring diagram supplied. Use proper size wire.
Wire size is specified adjacent to field wiring terminals.
This label states the wire size [AWG or MCM], mini-
mum temperature rating (90 C) and conductor material
(copper only). Deviation from these requirements may
result in improper or unsafe boiler operation.
3. A disconnect switch employing circuit breakers or
fuses should be installed between the main power
source and the boiler. This disconnect switch should be
located near the boiler and clearly marked for easy
access and identification should the boiler need to be
turned off due to an emergency.
4. Boiler control circuit is 120 Volt*. Unless boiler has an
optional step down transformer, a separate 120 Volt
power feed wiring is required to be connected to the
control circuit terminal block. A 15 Amp circuit is
required for all boilers. If a 3/4 HP feed water motor
and pump assembly is connected to the boiler, then a
20 Amp circuit is required.
Wiring
Installation, Operation & Maintenance Manual
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C A U T I O N
5. If a separate control circuit is used, it should be con-
nected to the control circuit terminal block.
6. Remote mounted water feed systems (i.e. condensate
return, motor and pump) should be connected to the
junction box provided on the outside of the boiler
jacket.
7. With main power off, make sure all wiring termina-
tions are tight to avoid arcing, carbonizing or over-
heating of contacts.
Boilers are susceptible to lightning
damage due to water line connections. An industrial type
lightning/surge protector should be installed according to
the manufacturer's recommendation at the service
entrance. Consult your contractor or electrical dealer.
Substitution of components or modifi-
cation of wiring system voids the warranty and may lead
to dangerous operating conditions.
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C A U T I O N
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WA R N I N G