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 70
7 Parts/Technical Support
Spare parts and replacement parts can be ordered from
Patterson-Kelley by calling toll free
(877) 728-5351
. Reach
us by fax at
(570) 476-7247
.
Refer to the parts list shown on the assembly drawings
provided in this manual.
Technical information is also available by calling or visit the
Patterson-Kelley website,
When ordering replacement parts please have the model
number and serial number of your boiler available.
Typical schematic drawings are shown on the following
pages. Drawings specific to your particular boiler can also
be supplied by your local Patterson-Kelley representative.
Terminal Block Assignments
7.1.1 Terminal Block Assignments
– Power Box (C-3000 & C-4000 Only)
The power box is located in the front of the boiler, at the lower left corner. This power box houses the
control transformer, fuses, the power box terminal strip circuit breakers, and the blower motor relay.
The three phase circuit breaker is mounted on DIN rail and allows for direct connection of the three
power leads. The terminals on the circuit breaker can accommodate maximum 10AWG wire. There is
an additional terminal on the DIN rail for a ground connection. Refer to the Ratings Nameplate on the
back surface of the boiler to verify the required electrical supply prior to connection.
Use of Non-Factory Authorized
replacement parts are not
recommended for this
equipment. All control
components are engineered for
safety and are designed to work
in unison with each of the other
components. Use of non-
factory authorized replacement
parts jeopardizes the
functionality of the safety
features as well as the
performance of the boiler.
