Patterson-Kelley HARSCO MACH C2000H, Инструкция по установке и эксплуатации

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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 51
4 Dual Fuel Boiler Operation
Overview
The P-K MACH
®
dual fuel boilers with NURO
®
controls feature two independent gas trains. One gas
train is designed exclusively for operation with Natural Gas and the other gas train is designed
exclusively for operation with Propane Gas. Refer to the labels on the dual fuel boiler for the proper
location of the Natural Gas and Propane Gas trains. Also, Section
4.3 and 4.4 show the specific
locations of the gas trains for each boiler model.
In addition, the P-K MACH
®
dual fuel boilers with NURO
®
controls feature a fuel selector switch inside
the boiler’s enclosure. To access the fuel selector switch, open the front door while the boiler is in
“Standby”. Refer to Sections
4.3.2 and 4.4.3 show the specific locations of the fuel selector switch for
each boiler model.
Changing Fuel Types
Before changing fuel types, force the boiler
into “Standby” through the NURO
®
touchscreen user
interface. Refer to the boiler’s manual or the NURO
®
Advanced Users’ Guide for more information.
Once the boiler is in standby, follow the steps below:
1.
Force the boiler into “Standby” through the NURO
®
touchscreen user interface.
2. Close the gas valve/cock for the fuel that will no longer be used.
3. Open the gas valve/cock for the desired fuel type.
4.
Toggle the fuel selector switch to the desired fuel type: Natural Gas = “NG” & Propane = “LP”.
5. Return the boiler to its normal (automatic) mode through the NURO
®
touchscreen user interface.
The operating principle of the fuel selector switch is identical between all the dual fuel boiler models
with NURO
®
controls. Refer to Sections 4.3.1 through 4.4.3 for model-specific information on the
location of the gas trains, the fuel selector switch and the dual fuel wiring diagrams.
Installation and service must be performed by a qualified installer, service
agency, or gas supplier.
Failure to observe the NATURAL GAS and PROPANE GAS labels on the
boiler and this manual could result in equipment damage, injury, and/or death.
If operating with Natural Gas, ensure the Propane Gas valve/cock is
CLOSED . If operating with Propane Gas, ensure the Natural Gas valve/cock is CLOSED . Failure
to do so could result in equipment damage, injury, and/or death.