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High Voltage (TB2) Terminal Block (SC1500 & SC2000)
HOT L1 – Connect the 1
TB2-1 terminal.
HOT L2 – Connect the 2
TB2-2 terminal.
NEUTRAL – Connect the neutral lead of the 208-240VAC, single phase, 60Hz electrical service to the
TB2-3 terminal.
Revised: June 2, 2017
Released: June 2, 2017
st
hot lead of the 208-240VAC, single phase, 60Hz electrical service to the
nd
hot lead of the 208-240VAC, single phase, 60Hz electrical service to the
HARSCO Industrial, Patterson-Kelley 2017
All Rights Reserved.
®
P-K SONIC
Gas Fired Boiler
Technical Service 1.877.728.5351
Be sure to check the
nameplate on the boiler
before connecting the
electrical supply.
N
!
OTICE
A dedicated earth ground
(green wire) is required to
avoid nuisance shutdowns.
Do not ground through the
conduit!
The high voltage (TB2)
terminal block on the SONIC
SC-1500 and
SC-2000 with
NURO controls contains two
hot leads (HOT L1 & HOT L2),
a neutral lead (NEUTRAL) and
a ground lead (GROUND) for
208- 240 VAC, single phase
60Hz electrical supply. This
terminal block (TB2) also
contains dry-contact relays
with a maximum voltage
rating of 240VAC and 1/2 Amp
maximum current capacity.
Incorrect wiring can result in
equipment damage, injury, or
death.
1004905978 P-K SONIC NURO Installation and
Owners Manual (Rev F Jun-2017).docx
Page 16
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