Gas Fired Boiler
13
Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
3.4 Electrical Connections
The
SC-2000
boiler requires
208-240 VAC
, single phase, 60 hertz electrical service. The total operating amperage
is indicated on the rating nameplate and the SC-2000 requires less than 15 Amps at full load. Before starting
the boiler, check to ensure that the proper electrical service is connected to the boiler.
The
SC-3000
and
SC-4000
boilers can be manufactured for
208-240 VAC
, three phase, 60 hertz electrical service
OR
440-480VAC
, three
phase, 60 hertz electrical service. The total operating amperage is indicated on the rating
nameplate and the
SC-3000
&
SC-4000
boilers require less than 20 Amps at full load. Before starting the boiler,
check to ensure that the proper electrical service is connected to the boiler.
An external electrical disconnect (not supplied with the boiler)
is required
. Refer to
Section
6.1
for proper wiring
and configuration of the electrical connections. The boiler electrical service must be installed and grounded in
accordance with local codes or in the absence of such requirements, in the U.S. with National Electrical Codes,
ANSI/NFPA No. 70 latest edition or, in Canada, to the Canadian Electrical Code, Part I,
CSA C22.1
, latest edition.
Installed conduit must not block any of the boiler’s openings and must allow the side doors to be opened.
3.4.1 Single Phase Power Supply Connection (SC-2000 Only)
High Voltage (TB2) Terminal Block
The SC-2000 must be supplied with 208-240VAC, single phase, 60 hertz electrical service. The SC-2000
features four dedicated power terminals on the
High Voltage (TB2)
terminal block.
Figure 3.4.1
shows the
Low Voltage (TB1) and
High Voltage (TB2)
terminal blocks on the SC-2000 with the front door hidden for
clarity:
TB2 Terminal 1 = HOT L1
TB2 Terminal 2 = HOT L2
TB2 Terminal 3 = NEUTRAL
TB2 Terminal 4 = GROUND
NOTE:
The SC-3000 & SC-4000
MUST
be ordered to the correct voltage!
IT IS NOT POSSIBLE
to convert
an SC-3000 or SC-4000 between the 240V and 480V configurations in the field.
Low
Voltage
(TB1)
Terminal
Block
High
Voltage
(TB2)
Terminal
Block
NOTE:
These
terminals
can
accommodate
maximum
10AWG
wire.
CAUTION:
Do
not
over
‐
tighten
the
terminal
screws.
Maximum
tightening
torque
=
6
in
‐
lbs!
Figure
3.4.1
Summary of Contents for SC-2000
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