Cleaning Of Old Boiler/System; Cleaning Of New Boiler/System; Check And Test Antifreeze; Use Of Antifreeze In The Boiler System - TriangleTube PRESTIGE Excellence 110 Installation & Maintenance Manual

CHAPTER 10 - START-UP PREPARATION

10.1.9 Cleaning of Old Boiler/System:

• Drain the existing system.
• Fill system with fresh water and cleaner, place exist-
ing boiler in operation and run all zones.
• Follow manufacturer's instructions for proper clean-
er concentration and proper cleaning time.
• Thoroughly drain and flush system with fresh water
after cleaning.
• Install new boiler and fill system with fresh water
and proper amount of inhibitor.
• Verify pH and inhibitor level per inhibitor manufac-
turer's specs; add inhibitor if necessary.

10.1.10 Cleaning of New Boiler/System:

• Install new boiler and flush system with clean water
to remove any debris.
• Fill system with fresh water and proper amount of
inhibitor.
• Verify pH and inhibitor level per inhibitor manufac-
turer's specs; add inhibitor if necessary.

10.1.11 Check and Test Antifreeze

For boiler systems containing antifreeze solutions, fol-
low the antifreeze manufacturer's instructions in verify-
ing the inhibitor level and to ensure the fluid character-
istics are within specification requirements.
Due to the degradation of inhibitors over time, antifreeze
fluids must be periodically replaced. Refer to the manu-
facturer of the antifreeze for additional instructions.

10.1.12 Use of Antifreeze in the Boiler System

WARNING
NEVER use automotive or ethylene glycol an-
tifreeze or undiluted antifreeze in the system
as freeze protection. This can result in sub-
stantial property damage, serious injury, or
Determine the antifreeze fluid quantity using the sys-
tem water volume and following the antifreeze manu-
facturer instructions.
52
death.
The water volume of the PRESTIGE Excellence is ap-
proximately 5 gallons [19 L]. Remember to include the
volume of the expansion tank.
Check with local code requirements for the installation
of backflow preventers or actual disconnection of the
boiler's cold water fill or make up water supply line.
NOTICE
Massachusetts Code requires the installation of
a backflow preventer if antifreeze is used.
Ensure the concentration of antifreeze to water does
not exceed a 50/50 ratio.
NOTICE
System fluid including additives, must be prac-
tically non-toxic, having a toxicity rating or
Class of 1, as listed in Clinical Toxicology of
Commercial Products.

10.2. Filling the Boiler System

CAUTION
Ensure the domestic inner tank of the PRES-
TIGE Excellence water heater is properly filled
and pressurized prior to filling the boiler sys-
tem. Reference the PRESTIGE Excellence water
heater manual for proper guidelines on filling
the inner tank. Failure to comply could result in
damage of the inner tank.
1. Close the boiler drain valve located on the bottom
of the unit and any manual or automatic air vents
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.
NOTICE
Typical residential system fill pressure is 12 psi.
System pressure will increase as system tem-
perature 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 from the zones.