Fulton Caliber (CAL) Condensing Hydronic Boiler - Manual (Page 20)

© The Fulton Companies 2014
INSTALLATION
CAL-IOM-2014-0129
SECTION 2
2-14
2. Piping must be installed such that no piping stresses
are transmitted to the boiler. The boiler cannot be used
as a pipe anchor.
3. The boiler and all gas piping connections must be
pressure-tested and checked for leaks before being
placed into service. Test with compressed air or inert
gas, if possible.
4. The boiler must be disconnected at the boiler manual
shutoff valve (located at the end of the supplied gas
train) from the gas supply piping system during any
pressure testing of the system at pressures in excess of
1/2 psig (14 inch W.C.).
5. Gas piping must be installed in accordance with
National Fuel Gas Code, ANSI Z223.1 (1991) or latest
addenda, and any other local codes which may apply.
6. The pipe and the fi ttings used must be new and free of
dirt or other deposits.
7. Piping must be of the proper size to ensure adequate
gas supply. A drip leg and union connection must be
installed upstream of the gas safety shut off valves.
8. Connect gas supply line to the open end of the tee on
which the drip leg is installed.
9. When making gas-piping joints, use a sealing
compound resistant to liquefi ed petroleum gases. Do
not use Tefl on tape on gas line threads.
10. After gas piping is completed and before wiring
installation is started, carefully check all piping
connections(factory and fi eld) for gas leaks. Use a soap
and water solution.
FIGURE 6 - TYPICAL GAS TRAIN
TABLE 4 - NOMINAL PIPE SIZE
Nominal
Pipe Size ID Equivalent Pipe
Length Max Capacity in ft3 of natural gas per hour. Pressure drop of
0.5”wc/Equivalent length of pipe (feet)
(“) (“) 90 Elb
(Feet) Tee
(Feet) 20 40 60 80 100 150 200
1-1/4 1.380 3.45 6.9 950 ----- ----- ----- ----- ----- -----
1-1/2 1.610 4.02 8.04 1460 990 810 ----- ----- ----- -----
2 2.067 5.17 10.3 2750 1900 1520 1300 1150 950 800
2-1/2 2.469 6.16 12.3 4350 3000 2400 2050 1850 1500 1280
3 3.068 7.67 15.3 7700 5300 4300 3700 3250 2650 2280
4 4.026 10.1 20.2 15800 10900 8800 7500 6700 5500 4600