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CHECKGAS SUPPLY
The gaspipe toyour boiler must bethe corrects'[zefor the
lengthofthe runand forthetotal BTU perhour inputofall
gas utilization equipment connected to it.See F_J.10 for
the proper size. Be sure your gas linecomplies with local
codes and gas company requirements.
The boiler and its individual shutoff vaive must be
disconnected from the gas supply piping system during
any pressure testing of thatsystem at test pressures in
excess of 1/2 psig (3.5 kPa).
The boiler must be isolated from the gas supply piping
system bydosing itsindividualmanualshutoffvak_during
any pressure testing of the gas supply piping system at
test pressures equal to or less than 1/2 psig (3.5 kPa).
CONNECTING THE GAS PIPING
Refer to Fig, 11 for the general layout at the boiler. It
showsthe basic f-_ngs youwill need. The gas lineenters
the boiler from the right side.
following rules apply:
1.Use only those piping materials and joining metheds
listed as acceptable bythe authority having jurisd_on,
or inthe absence ofsuch requirements, bythe Nationel
Fuel Gas Code, ANSI ZX223.1-1atest revision. In
Canada, follow the CSA B149.1 and .2 Installation
Codes for Gas Burning Appliances and Equipment
2. All pipe compound must be resistant to liquefied
pe'm3leumgas.
3. Install ground joint union in gas supply line between
shut-off valve and boiler controls.
4. Install a sediment Imp upskeam of gas controls.
5. Use two pipewrenches when making the conneclJon
to the gas valve to keep itfrom turning.
6. Install manual shut-off valve in ver'dcal pipe about 5
feet above floor.
7. rKjhten all joints securely.
8. Propane gas conneclions should only be made by a
licensed propane installer.
9.Two-stage regulation should be used bythe propane
installer.
10. Propane gas piping should be checked out by the
propane installer.
CHECKING THE GAS PIPING
Upon completion of piping, check rightaway for gas
leaks. Open the manual shut-off valve. Test for leaks
by applying soap suds (or a liquid detergent) to each
joint. Bubbles forming indicate a leak. CORRECT
EVEN THE SMALLEST LEAK AT ONCE.
2O
I WARNING I
Never use a match or open flam to test for leaks.
Length of
Pipe - Ft.
20
40
60
NATURAL GAS
Pipe Capacity - BTU Per Hour Input
Includes Fittings
1/2" 3/4" 1" 1 1/4"
92,000 190,000 350,000 625,000
63,000 130,000 245,000 445,000
50,000 105,000 195,000 365,000
PROPANE GAS
Pipe Capacity - BTU Per Hour Input
Length of Includes Fittings
Pipe - Ft. Copper Tubin@* Iron Pipe
5/8" 3/4" 1/2" 3/4!'
20 131,000 216,000 189,000 393,000
40 90,000 145,000 129,000 267,000
60 72,000 121,000 103,000 217,000
*Outside diameter
The length of pipe or tubing should be measured from the
gas meter or propane second stage regulator,
FLOOR LINE
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