Gas Supply Connection - Buderus Logano G334 X Installation And Maintenance Instructions Manual

7 Boiler installation
7.7

Gas supply connection

7.7.1 Installing gas feed
For the gas pipe diameter required for the installation
please see Tab. 4 and Tab. 5. Make sure that the pipe
fitting has the correct thread size.
Make sure that a sediment trap is installed at the inlet for
the gas supply pipe to the boiler. A hand stop valve must
be installed outside the boiler jacket if required by the
local code. We recommend installing a hand stop valve
in the main gas pipe to the boiler. The gas pipes must be
fastened outside the boiler.
USER NOTE
The gas supply pipe is designed for a gas
connection on the right side.
If the gas feed is from the left, the gas
connection pipe must be completely
unscrewed, turned 180° and installed
again.
Check the connection for leaks.
Please support extenion gas piping to
relieve stress on gas train.
The local codes must be observed during installation of
the gas connection, otherwise the regulations of the
National Fuel Gas Code, ANSI Z 223.1.
DANGER OF EXPLOSION
Leakage from the gas pipes and gas
connections may cause an explosion.
WARNING!
Use soap solution to find leaks.
SYSTEM DAMAGE
due to short-circuit.
Cover the hazardous locations before
CAUTION!
checking for leaks.
Do not spray the leak solution on wiring
openings, plugs or electrical
connections. Do not allow the solution
to drip on these locations.
Length Gas pipe supply volume in cubic feet of gas
of pipe
in feet
1" 1¼"
10 520 1060
20 350 730
30 285 590
40 245 500
50 215 440
75 175 360
100 160 305
150 120 250
Tab. 4 Gas pipe supply volume
1 Maximum gas supply volume in cubic feet per hour, based on a
specific gas weight of 0.60 and a gas pressure of 0.5 psi or less
and a pressure gradient corresponding to a water column of
0.3 inches.
20
1
per hour
1½" 2" 2½"
1600 3050 4800
1100 2100 3300
890 1650 2700
760 1450 2300
670 1270 2000
545 1020 1650
480 870 1400
380 710 1130
Installation and maintenance instructions Logano G334 X gas-fired boiler • Issue 09/2005
4
Fig. 18 Pipe connection to gas valves – back view
1 Gas feed
2 Main gas shut-off valve
3 Sediment trap
4 Retaining screws at the gas supply line
We reserve the right to make any changes due to technical modifications.
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2
3
4