Bryant BFIT 1000, Инструкция по установке, эксплуатации и обслуживанию

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Install the strainer drownstream of the full port
isolation valve at the inlet side of the circulator
for ease of service.
8.
Flow Control Valve (Strongly Recommonded)-
The flow control valve prevents flow through
the system unless the circulator is operating.
Flow control valves are used to prevent gravity
circulation in circulator zone systems through
zones that are not calling for heat.
9.
Isolation Valves (Strongly Recommended)--
Isolation valves are useful when the boiler must
be drained, as they will eliminate having to drain
and refill the entire system.
10.
Drain Valves (Required)--
A factory installed
3/4” NPT drain valve and connection is provided
with the unit.
NOTICE
The BFIT boiler heat exchanger is made from
stainless steel tubular double coil having
relatively narrow waterways. Once filled
with water, it will be subject to the the effects
of corrosion. Failure to take the following
precautions to minimize corrrosion, and
overheating could result in severe boiler
damage.
Before connecting the boiler, insure the
system is free of impurities, grease, sediment,
construction dust, sand copper dust, flux and
any residual boiler water additives. Flush the
system thoroughly and repeatedly, if needed,
with clear water mixed with concentrated
rinse agent to remove these contaminants
completely.
Iron oxide (red oxide sludge Fe
2
O
3
) is produced
by oxygenation. To minimize any oxygen
presence in the system, the system must be
air free and leak tight. Do not connect the
boiler to radiant tubing without an oxygen
barrier. Using automatic water refill is not
recommended. However, if such refill is
employed, a water meter must be added to
evaluate the make up water volume taken after
initial fill and eliminate any water leakage as
early as possible.
Black oxide sludge (magnetite Fe
2
O
4
) forms as
the result of continuous electrolytic corrosion
in any system not protected by an inhibitor.
Scale deposit is made up of lime scale contained
in most distributed water and settles over the
warmest surfaces of boiler heat exchanger
causing subsequent overheating and eventual
failure.
Refer to “Service and Maintenance” for
recommended heating system water treatment
products (corrosion/scale inhibitors, cleaners
etc) and their suppliers.
F. Water Quality and Treatments
1. Sanitary units will be subject to chemical effects
when they are filled with water. The quality of
water used in the heating system is essential for
the successful operation and longevity of the
product. A successful water treatment plan will
help to maintain efficiency, reduce the frequency
of repair and/or replacement, and extend the
working life of the boiler and other system
equipment. If left untreated, poor water quality
could cause a number of problems including, but
not limited to, oxidation, scaling, corrosion, and
fouling.
2. Since the condition of water varies from location
to location, it is impossible to prescribe a one-
zone-fits-all treatment plan for the system water.
In order to develop an effective water treatment
plan, it will be necessary to gain knowledge of
the impurities dissolved in the water. Once all the
impurities are identified, the proper treatment
plan can be established. Therefore, it will be
essential to obtain the expertise of a qualified
industrial water treatment professional to
establish a treatment plan. In addition, a periodic
testing/sBFITling plan should be developed. The
intent of the plan should be:
a. Ensure the protection of the boiler and system
equipment.
b. Prevent any unforeseen system failure
c. Provide information for use in addressing the
water quality.
d. To confirm the proper concentration of
chemicals.
IX. Hydronic Piping
(continued)