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 42
Water Quality
The P-K MACH
®
boiler’s heat exchanger is made a cast Aluminum alloy. The heat exchanger requires
proper water conditions to remain efficient and function properly. Information of proper water treatment
can be found on our website
type in search: “water quality”. For information,
please refer to Patterson-Kelley Multi-Metal Systems Water Quality Standards as it appears in
– Water Quality Standards Quality Standards for Hydronic Boilers in Multi-Metal
as this applies to the warranty of your heat exchanger. Under no circumstances should
Soften Water be used in boiler.
If the piping system attached to this unit will be chemically cleaned, the boiler must be disconnected
from the system and a bypass installed so that the chemical cleaning solution does not circulate
through the boiler. Following chemical cleaning, the system should be thoroughly rinsed to remove
cleaning agents prior to reconnecting the boiler to the system.
Pre-Start Checklist
Before attempting to start the boiler, make sure the following items
have been completed.
Inspect the gas train, blower, ignition electrode, and boiler in general
to be sure there was no damage during shipment or installation.
Flue gas from the boiler is properly vented.
Gas connection has been made, pressure tested for leakage and the
line purged of air. Make sure all required vents have been installed.
Water connections are complete and the boiler and system have
been filled and purged of air.
The boiler is connected to the correct electrical power source listed
on the nameplate, a disconnect having adequate overload protection
is required.
Combustion air openings are not obstructed in any way and have
adequate capacity.
The boiler is placed the proper distance from any combustible walls.
Relief valves have been piped to an acceptable drain at a safe point
of discharge.
Condensate piping is properly connected.
Verify system water quality is within specifications.
Never attempt to operate
a boiler that has failed to
pass all the safety
checks described below.
Operating a boiler that
has failed a safety check
could result in injury.
Bypassing safety
mechanisms will result
in unsafe boiler
operation which could
result in injury or death.
After checking controls
by manual adjustment,
make sure they are
always reset to their
proper settings.
NOTICE!
The chemical manufacturer for use must certify glycol or other treatment chemicals
added to the system in multi-metal systems that include an aluminum heat exchanger.
Under no circumstances should petroleum-based cleaning or sealing compounds be used in the
boiler system.
Under no circumstances should the hydronic system be flushed while the appliance is attached to
the system since the debris or corrosion products may accumulate in the appliance and obstruct the
appliance’s heat exchanger.
