FULTON VSRT Series Installation, Operation And Maintenance Manual page 43

SECTION 2
VSRT-IOM-2022-0728
7. The pipe and the fittings used must be new and free of dirt or other
deposits.
8. Piping must be of the proper size to ensure adequate gas supply. It is
typical for gas delivery piping to be upsized one or several diameters larger
than boiler gas inlet size.
9. Connect gas supply line to the open end of the factory gas train.
10. When making gas-piping joints, use a sealing compound resistant to the
fuel gas serving the boiler.
11. The boiler gas train has been factory leak tested, however, fittings may
loosen during shipment or installation. After gas piping is completed
and before wiring installation is started, carefully check all piping
connections (factory and field) for gas leaks. Use a soap and water
solution or combustible gas detector. A GAS-Mate® 0119 or equivalent is
recommended.
12. Components may have vent connections which must be vented per local
codes
13. All gas piping must be arranged so that it does not interfere with any cover
or burner, inhibit service or maintenance, or prevent access between unit
and walls or another unit.
ƒ Multiple Boiler Installation
When gas supply pressure exceeds the maximum on the boiler name plate, a
line gas pressure regulator is required. It is recommended that an individual
regulator be used at each boiler.
When a single regulator is used for multiple boilers, the regulator must be
appropriate for the entire gas delivery flow (CFH) turndown range. This includes
all boilers on at full fire to one boiler on at low fire.
Electrical Connections and Devices
–
NOTE: This boiler is factory configured for site voltage and is not intended for field
conversion. See data plate on rear of boiler cabinet for rating.
The boiler is designed to operate within the following limits at the connection
terminals:
ƒ
AC power supplied is within +/- 10% of the motor rated voltage with the
rated frequency applied; or AC power supplied is within +/- 5% of the rated
frequency and with the rated voltage; or a combined variation in voltage
and frequency of +/-10% (sum of absolute values) of rated values provided
the frequency variation does not exceed +/-5% of rated frequency.
ƒ
When installed in a 208/3/60 service, the minimum supply voltage applied
to the boiler terminals is 207 volts and must always be met. This boiler is
not designed for use on High-Leg Delta electrical service. A transformer
(not provided) will be required to convert High-Leg Delta to standard Delta
or Wye service.
Questions? Please Contact Your Local Manufacturer's Representative
INSTALLATION
!
WARNING
Do not use matches, candles, flame or
other sources of ignition to check for gas
leaks.
!
WARNING
The vent line connection on the gas
pressure regulator must be piped to
outdoor air by the installer in accordance
with National Fuel Gas Code, ANSI Z223-
1-1991 or latest addenda. In Canada, gas
installations must be in accordance with
the current CAN/CGA B149.1 and 2 and/or
local codes.
4
CAUTION
Some soap used for leak testing is corrosive
to certain types of metals. Clean all piping
thoroughly after completing the leak check.
!
WARNING
Assure all electrical connections are
powered down prior to attempting
replacement or service of electrical
components or connections of the
equipment.
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