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Start-Up Preparation
• Verify pH and inhibitor level per inhibitor
manufacturer’s specs; add inhibitor if
necessary.
Check and Test Antifreeze
For boiler systems containing antifreeze solu-
tions, follow the antifreeze manufacturer’s
instructions in verifying the inhibitor level and
to ensure the fluid characteristics are within
specification requirements.
Due to the degradation of inhibitors over time,
antifreeze fluids must be periodically replaced.
Refer to the manufacturer of the antifreeze for
additional instructions.
Use of Antifreeze in the Boiler System
NEVER use automotive or ethylene gly-
col antifreeze or undiluted antifreeze in
the primary system as freeze protection.
This can cause severe personal injury,
death or substantial property damage if
ignored.
Determine the antifreeze fluid quantity using
the system water content volume and following
the antifreeze manufacturer instructions.
The water volume of the PRESTIGE Excellence
is approximately 5 gallons [19 L]. Remember to
include the volume of the expansion tank.
Check with local codes requirements for the
installation of backflow preventers or actual
disconnection from the boiler’s cold water fill
or make up water supply line.
Massachusetts Code requires the installa-
tion of a backflow preventer if antifreeze
is used.
Ensure the concentration of antifreeze to water
does not exceed a 50/50 ratio.
System fluid, including additives, must be
practically non-toxic, having a toxicity
rating or Class of 1, as listed in Clinical
Toxicology of Commercial Products.
Ensure the domestic inner tank of the
PRESTIGE Excellence water heater is
properly filled and pressurized prior to
filling the boiler system. Reference the
PRESTIGE Excellence water heater for
proper guidelines on filling the inner
tank. Failure to comply could result in
damage of the inner tank.
Filling the Boiler System
1. Close the boiler drain valve located on the
bottom of the unit and any manual or auto-
matic air vent in the system.
2. Open all system isolation valves.
3. Fill the boiler system to correct system
pressure. Correct pressure will vary with
each application.
Typical residential system fill pressure is
12 psi. System pressure will increase
when system temperature increases.
Operating pressure of the system should
never exceed 25 psi.
4. Purge air and sediment in each zone of the
boiler system through the purge valve. Open
air vents to allow air to be purged in the zones.
5. Once the system is completely filled and
purged of all air and sediment, check the
system pressure and check/repair any leaks.
For proper operation of the air vents
ensure vent cap are tightened at all
times. The air vents are provided with
hydroscopic cap that prevents leakage of
water due to internal membrane.
NOTICE
CAUTION
WARNING
NOTICE
NOTICE
NOTICE
