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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/2 psig (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).
NATURAL GAS
Pipe Capacity - 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.
10
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