UTICA BOILERS UB90-100, Руководство по установке

Страница: 29 / 72

29
Never use a match or open flame to test for leaks.
B. Connecting The Gas Piping
Refer to Figure #12 (on following page) for the general lay-
out at the boiler. It shows the basic fittings you will need. The
gas line enters the boiler from the right side jacket panel. The
boiler may receive the gas supply pipe through the left side, or
rear jacket panel by relocating the gas valve connector and pipe
assembly. The boiler is equipped with a ½” NPT connection on
the gas valve for supply piping. The following rules apply:
1. Use only those piping materials and joining methods 1.
listed as acceptable by the authority having jurisdiction, or
in the absence of such requirements, by the National Fuel
Gas Code, ANSI Z223.1- latest revision. In Canada, follow
the CSA- B 149.1 and .2 Installation Codes for Gas Burn-
ing Appliances and Equipment.
2. Use pipe joint compound suitable for liquefied petro-
2.
leum gas on male threads only.
3. Use ground joint unions.
3.
4. Install a sediment trap upstream of gas controls.
4.
5. Use two pipe wrenches when making the connection to
5.
the gas valve to keep it from turning.
6. Install a manual shutoff valve in the vertical pipe about 5
6.
feet above floor.
7. Tighten all joints securely.
7.
TABLE #3 – GAS PIPE SIzES
NatUral Gas
length of
Pipe - Ft.
Pipe capacity - BtU Per Hour input includes Fittings
1/2” 3/4” 1” 1 1/4”
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
ProPaNe Gas
length of
Pipe - Ft.
Pipe capacity - BtU Per Hour input includes Fittings
copper tubing* 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
8. Propane gas connections should only be made by a
8.
licensed propane installer.
9. Two stage regulation should be used by the propane
9.
installer.
10. Propane gas piping should be checked out by the
10.
propane installer.
C. Checking The Gas Piping
After all connection have been made, check immediately
for leaks. Open the manual shutoff valve. Test for leaks by
applying soap suds (or a liquid detergent) to each joint.
Bubbles forming indicate leak. CORRECT EVEN THE
SMALLEST LEAK AT ONCE.
GAS SUPPLy PIPING
WARNING
!