FULTON VSRT Series, Инструкция по установке, эксплуатации и обслуживанию

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2-31
SECTION 2
VSRT-IOM-2022-0728
INSTALLATION
4
CAUTION
A temperature exceeding 120 F (49 C) in the
boiler room may cause premature failure of
electrical components. Provisions should be
made to maintain an ambient temperature
of 120
F (49 C) or less (the panel box interior
should not exceed 125 F [52 C]).
!
WARNING
An exhaust fan may draw products of
combustion into the work environment,
creating a possible hazard to personnel. A
spill switch installed in the stack is highly
recommended and is required in some
jurisdictions.
4
CAUTION
It is essential that only fresh air be allowed
to enter the combustion air system. Foreign
substances, such as combustible volatiles
and lint in the combustion system can create
hazardous conditions. If foreign substances
can enter the air stream, the combustion air
inlet must be piped to an outside location.
Failure to do so will void the warranty.
Particulate matter like lint, dust or smog
or chemicals (example: perchlorethlylene,
halogenated compounds) in the
combustion air supply to the equipment will
cause damage or failure of the burner and
is not covered under warranty. High risk
situations for particulate matter to be in the
air include construction and maintenance
activities.
When calculating ventilation requirements,
heat losses from the Fulton equipment (and
other equipment) should be considered.
!
WARNING
A qualified installer, service agency or the
gas supplier must perform installation and
service on the fuel delivery system.
!
WARNING
Combustion Air Filter (VSRT 9.5, 80–250 BHP Only)
The air filter requires monthly inspection and, at minimum, annual replacement.
See Maintenance section of this manual.
The Gas Supply
This boiler features a gas fired fully modulating burner requiring delivery of gas
at a relatively constant pressure and calorific content. This ensures efficient and
reliable combustion.
The packaged gas train is configured to operate at specific gas pressure
requirements. The standard requirements are detailed in Table 3. Do not modify the
factory gas train. If gas pressure not shown on table, contact factory.
NOTE:
–
Alternate or custom configurations may have different requirements;
always review the boiler nameplate before installation.
This boiler is factory test fired and combustion is adjusted per the boiler
nameplate and Test Fire Report.
ƒ
Inlet Gas Pressure
Adhere to the following:
ƒ
Static inlet gas pressure : Measure while boiler is idle. Verify pressure is within
allowable range.
ƒ
Dynamic inlet gas pressure : Measure while boiler is in operation at
maximum firing rate. Verify pressure is within allowable range.
ƒ
The gas delivery system must provide a stable and consistent pressure
across the entire turndown range, including ligh
t off and idle conditions.
ƒ
Maximum inlet gas pressure drop from static to dynamic must not exceed
15%, or the maximum allowable by local code (CSA B149 clause 6.3.2 for
Canada). The stricter of the two shall apply.
ƒ
Line Gas Pressure Regulation
When inlet gas pressure exceeds the maximum on the boiler name plate, a line
gas pressure regulator is required to step the gas pressure down to an acceptable
pressure.
Proper selection and installation of a gas pressure regulator is essential in
providing conditions for efficient and reliable combustion. Adhere to the
following guidelines when selecting and installing a gas pressure regulator:
ƒ
A sediment trap is recommended prior to the inlet of the regulator.
ƒ
If the level of pipe system cleanliness is unacceptable or unknown, install a
gas filter prior to the regulator.
ƒ
On the outlet of the regulator: Install a straight and uninterrupted section
of pipe matching regulator connection size with a minimum length of 10
pipe diameters prior to any valves or fittings.