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3.4.6 Flushing the Domestic Water
The P-K MACH 'n' Roll
®
P-K MACH
appliance and its piping. A dual-check valve ensures that the water in the appliance loop
cannot re-enter the domestic loop. It is imperative that the water quality guidelines required for a P-K
®
MACH
appliance be strictly followed. The P-K MACH
aluminum alloy. All heat exchangers require proper water conditions to remain efficient and function
properly. For information log on to our website:
Quality Standards information as this applies to the warranty of the appliance's heat engine.
NOTICE! Glycol or other treatment chemicals added to the system must be certified by the chemical
manufacturer for use in multi-metal systems that include cast aluminum appliances.
NOTICE! Under no circumstances should petroleum based cleaning or sealing compounds be used
in the appliance system.
NOTICE! Under no circumstances should the hydronic system be flushed while the appliance is
attached to the system since the debris or corrosion products could accumulate in the appliance and
plug the appliance heat exchanger.
NOTICE! Performance data for recovery capacity of the P-K MACH 'n' Roll
was performed with pure water with no additives. Chemical additives will impact the performance of
the P-K MACH 'n' Roll
NOTICE! If the piping system attached to this unit will be chemically cleaned, the appliance must be
disconnected from the system and a bypass installed so that the chemical cleaning solution does not
circulate through the appliance. Following chemical cleaning, the system should be thoroughly rinsed
to remove cleaning agents prior to reconnecting the appliance to the system.
Before the initial fill, ensure that any and all sediment or particulates have been removed from the
domestic water. Ensure that any isolation valves between the domestic water storage tank and the P-K
™
MACH 'n' Roll
system are closed. If available, use a drain valve on the domestic water storage tank to
purge sediment and particulates.
3.4.7 Filling the System
Before filling the system, ensure all the mechanical connections are complete. Also, refer to the P-K
®
MACH
CM300 through C1050 NURO installation and operation manual to ensure the appliance's
pressure relief valve is installed correctly.
•
STEP 1 – Remove either the front or left panel from the P-K MACH 'n' Roll
better access to the expansion tank/fill valve assembly isolation valve.
•
STEP 2 – If available, close the manual isolation valves in the domestic piping between the
domestic water storage tank and the P-K MACH 'n' Roll
•
STEP 3 – Close the manual isolation valve ahead of the expansion tank/fill valve assembly.
Refer to
Section 3.3.4
than 20 psig.
•
STEP 4 – Close the drain valves on the appliance and domestic piping.
•
STEP 5 – Open the cap on the automatic air vent in the appliance piping.
Revised: January 3, 2020
Released: January 3, 2020
™
system features an expansion tank/fill valve assembly that provides water to the
™
system.
to ensure the expansion tank is charged to at least 12 psig and not more
Patterson Kelley 2020
All Rights Reserved.
®
appliance heat exchanger is made of an
www.pattersonkelley.com
™
system.
®
P-K MACH
Gas Fired Appliance
Technical Service 1.877.728.5351
for Multi-Metal Systems Water
™
system (see
Section
™
system to provide
1004905989 MnR & MnRP 300-399-500-750-
1050 NURO Rev C (Jan-2020).docx
7)
Page 14
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