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CHECK GASSUPP_
The gas pipe to your boiler must be the correct size for the
length of the run and for the total Btu per hour input of all
gas utilization equipment connected to it. See Fig. 12 for
the proper size. Be sure your gas line complies with local
codes and gas company requirements.
The boiler and its individual shutoff valve must be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess
of I/2psig (3.5 kPa).
The boiler must be isolated from the gas supply piping system
by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test
pressures equal to or less than 1/zpsig (3.5 kPa).
NATURALGAS
PipeCapacity - BTU per Hour Input
Length of Includes Fittings
Pipe- Ft.
V2" 3/4" 1" 11/4"
20 92,000 190,000 350,000 625,000
40 63,000 130,000 245,000 445,000
60 50,000 105,000 195,000 365,000
The length of pipe of tubing should be measured from the gas meter
CONNECTING THE GAS PIPING
Refer to Fig. 13 for the general layout at the boiler. It shows
the basic fittings you will need. The gas line enters the boiler
from the right side.
The following rules apply:
1. Use only those piping materials and joining methods
listed as acceptable by the authority having jurisdiction,
or in the absence of such requirements, by the National
Fuel Gas Code, ANSI Z223.1-1atest revision.
2. Use pipe joint compound suitable for LP gas on male
threads only
3. Use ground joint unions.
4. Install a sediment trap upstream of gas controls.
5. Use two pLpe wrenches when making the connection
to the gas valve to keep it from turning.
6. Install a manual shut-off valve in vertical pipe about 5
feet above floor.
7 Tighten all joints securely
CHECKING THE GAS PIPING
Upon completion of piping, check immediately 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
WARNING
Never use a match or open flame to test for leaks.
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