24
6.1 General
•
• Install piping in accordance with authority having jurisdiction.
• Support system piping and safety relief valve discharge
piping. Boiler's internal piping can be damaged if subjected to
excessive weight.
NOTICE
The intended use of the internal heat exchanger pump
is a boiler loop. Do not use as a primary system pump.
• Size central heating pump (and domestic hot water pump, if
pump compensates for pressure drop through boiler internal
piping and heat exchanger.
•
• If oil is present in system water, use approved detergent to
wash system.
WARNING
• Poison hazard. Ethylene glycol is toxic. Do not use
ethylene glycol.
• Never use automotive or standard glycol antifreeze,
even ethylene glycol made for hydronic systems.
• Ethylene glycol can attack gaskets and seals used in
hydronic systems.
• Do not use petroleum based cleaning or sealing
compounds boiler system.
•
water.
• Use only inhibited propylene glycol solutions
with closed water heating system.
•
glycol before installing new Boiler.
• Provide user with Material Safety Data Sheet
!
•
central heating systems.
• Manufacturer recommends installation of magnetic dirt
separator in the hydronic system where there are cast iron
or steel components, or where the previous boiler was a cast
surfaces and accumulate in pump cavities causing reduced
• Flush system to remove any solid objects such as metal chips,
• Flush system until water runs clean and piping is free of
sediment.
•
If purge valves and isolation valves are not installed, install
them to properly clean the system.
• When purging installations that include standing iron radiators
and systems with manual vents at high points, start with
out, then close vent. Repeat this procedure, working toward
furthest air vent.
• Install a basket strainer if large amounts of sediment is
present. Keep basket clear of sediment build up.
• Ensure piping in the heating system has an oxygen barrier.
6 - HYDRONIC PIPING
6.2 Special Conditions
NOTICE
Boiler rated at 50 psig (345 kPa) maximum allowable
working pressure. Boiler provided with 30 psig (206
kPa) safety relief valve.
NOTICE
System pressure above 43 psi [2.96 bar] WILL result
in boiler shutting down.
NOTICE
Do not expose boiler and condensate piping to freezing
temperatures.
• System piping exposed to freezing conditions: Use
manufacturer for use with closed water heating system.
Do not use automotive or ethylene glycol.
•
authority having jurisdiction). Integral low water pressure
switch is provided in boiler.
• Boiler used in connection with refrigeration system.
Install piping in parallel with boiler, with appropriate
valves to prevent chilled medium from entering boiler.
• System piping connected to heating coils located in air
handling unit exposed to refrigerated air circulation.
prevent gravity circulation of boiler water during cooling
cycle.
240012564 REV A, [05/15/2019]
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