P-K MACH
®
Gas Fired Boiler
Technical Service 1.877.728.5351
Revised: January 3, 2020
Released: January 3, 2020
Patterson-Kelley 2020
All Rights Reserved.
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
Page 20
Electrical Connections
3.3.1 Power Requirements (C-1500H, C-2000H & C-2500)
The C-1500H, C-2000H and C-2500 boiler models require 110-120 VAC,
single phase
, 60 hertz
electrical service. The MCA and MOCP are indicated on the boiler’s rating nameplate. Before starting
the boiler, check to ensure that the proper electrical service is connected to the boiler. The total
operating amperage is indicated on the rating nameplate and the C-1500H & C-2000H boilers require
less than 15 Amps at full load. The C-2500 boiler requires less than 17 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 and overload protection (not supplied with the boiler)
are required
.
for proper wiring and configuration of the electrical connections. The electrical
service to the boiler 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 current 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 front door to be opened.
3.3.2 Single Phase Power Supply Connection (C-1500H, C-2000H & C-2500)
The C-1500H, C-2000H and C-2500 models feature three dedicated power terminals on the
High
Voltage (TB2)
terminal block for the 110-120VAC,
single phase
,
and 60 hertz electrical supply. The
image below shows the location of the
Low Voltage (TB1)
and
High Voltage (TB2)
terminal blocks
with the front door opened for clarity:
•
TB2 Terminal 1 = HOT L1
•
TB2 Terminal 2 =
Not Used
•
TB2 Terminal 3 = NEUTRAL N1
•
TB2 Terminal 4 = GROUND GND
Low Voltage (TB1) Terminal Block
High Voltage (TB2)
Terminal Block
NOTE
These terminals can
accommodate maximum
10AWG wire.
Do not over-tighten the terminal
screws. Maximum tightening
torque = 6 in-lbs!
