Check And Test Antifreeze; Use Of Antifreeze In The Boiler System; Filling The Boiler System - Prestige Solo 110 Installation And Maintenance Manual

10.0 Start-Up Preparation

10.1.7 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.
10.1.8 Use of Antifreeze in the Boiler
System
WARNING
NEVER use automotive or ethylene glycol
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 Solo is
approximately 3 gallons [12 L] for PRESTIGE
Solo 80/110 or 5 gallons [19 L] for PRESTIGE
Solo 155/175/250 or 7 gallons [26 L] for PRES-
TIGE Solo 299/399 . 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.
NOTI E
Massachusetts Code requires the instal-
lation of a backflow preventer if
antifreeze is used.
Ensure the concentration of antifreeze to water
does not exceed a 50/50 ratio.
NOTI E
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.

10.2 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.
NOTI E
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.
WARNING
Unrepaired system leaks will cause con-
tinual makeup water to be added to the
boiler. Continual makeup water will
cause mineral buildup within the heat
exchanger, reducing the heat transfer,
causing possible heat buildup and even-
tual heat exchanger failure.
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