UTICA BOILERS UB90 125, Руководство по установке и эксплуатации

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XII. STARTUP
WATER TREATMENT AND
FREEZE PROTECTION
1. Consult local water treatment specialist for reco-
mendations if your water pH levels are below of 7.0
or hardness is above 7 grains hardness.
a. This boiler is designed for use in a closed
hydronic heating system ONLY!
b. Excessive feeding of fresh make-up water
to the boiler may lead to premature failure of
the boiler sections.
2. Use clean fresh tap water for initial fill and peri-
odic make-up of boiler.
a. A sand filter must be used if fill and make-
up water from a well is to be used.
b. Consideration should be given to cleaning
the heating system, particularly in retrofit sit-
uations where a new boiler is being installed
in an older piping system.
c. In older systems, obviously discolored,
murky, or dirty water, or a pH reading below
7, are indications that the system should be
cleaned.
d. A pH reading between 7 and 8 is preferred
when antifreese is not used in the system.
3. Antifreeze, if needed, must be of a type specifi-
cally designed for use in closed hydronic heating
systems and be compatible with type 356 T6 alumi-
num at operating temperatures between 20°F and
250°F.
a. Use of antifreeze must be in accordance
with local plumbing codes.
b. Pure glycol solutions are very corrosive,
therefore hydronic system antifreeze typi-
cally contains corrosion inhibitors. Different
brands of hydronic system antifreeze contain
different types of corrosion inhibitors. Some
brands have corrosion inhibitors that break
down more rapidly or become ineffective at
higher temperatures when used with alumi-
num. This could lead to premature failure of
the aluminum boiler. Consult the antifreeze
manufacturer on the compatibility of their
product with aluminum.
c. Follow the antifreeze manufacturer’s in-
structions on determining proper ratio of an-
tifreeze to water for the expected low tem-
perature conditions, and for maintaining the
quality of the antifreeze solution from year to
year. Improperly maintained antifreeze solu-
tions will gradually lose their ability to protect
the aluminum boiler from corrosion.
d. The recommended premixed antifreeze
solution is INTERCOOL NFP-50. This prod-
uct is sold direct to distributors by the manu-
facturer. Please contact Interstate Chemical
Company at 1-800-422-2436 or your distribu-
tor for more information.
Use of an alternate manufacturer’s premix
antifreeze is acceptable if the product speci-
fications are comparable with those of the
recommended premix antifreeze and the an-
tifreeze is compatible with type 356 T6 alu-
minum. Use of incompatible antifreeze could
damage the heat exchanger and will void the
product warranty.
The antifreeze must be maintained per the
specifications of the manufacturer. Failure to
do so will result in the warranty being voided.
Follow the antifreeze manufacturer’s instruc-
tions on determining the proper ratio of an-
tifreeze to water for the expected low tem-
perature conditions and for maintaining the
antifreeze solution from year to year.
e. DO NOT USE AUTOMOTIVE ANTI-
FREEZE , as the type of corrosion inhibitors
used will coat the boiler’s heat transfer sur-
sate from the boiler, an external float activated con-
densate pump with integral sump (supplied by oth-
ers) is required. The condensate pump can be piped
to a remote tie in point to a sanitary sewer system.
For this application, the boiler must be installed so
that proper pitch of piping to the external condensate
reservoir (sump) can be accomplished. Use wood
frame or blocks (not factory supplied) to raise boiler
as required for proper installation.