Logano G334X, Installation And Service Instructions Manual

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5
Tank installation
Logano G334X – 6 720 811 237 (2014/05) 15
Leak test
▶ Check the boiler and gas supply connections for leaks (

page 21).
Pressure tests
Disconnect the boiler and its gas shutoff valve form the gas supply pipe
system if that system is subjected to pressure tests in which the test
pressure exceeds 0.5 psi (34.5 mbar).
If the gas supply piping system is pressure-tested at a test pressure of
0.5 psi (34.5 mbar) or less, it is sufficient to disconnect the boiler from
the gas supply piping system by closing the shutoff valve.
5.7.2 Converting boiler to propane
The boiler is factory-set for operation with natural gas.
Length of the pipe in feet
(1 foot = 0.3 m)
Flow rate in cubic feet of gas per hour
1)
(1 ft
3
/h = 28.3 l/h)
1) Maximum flow rate in cu ft/hr (1 ft
3
/h = 28.3 l/h) based on a gas specific gravity of 0.60 and a gas pressure of 0.5 psi (34.5 mbar) or less and a pressure drop equivalent to
a water column of 0.3 inches (7.6 mm).
1" 1¼ " 1½ " 2" 2½ "
10 520 1060 1600 3050 4800
20 350 730 1100 2100 3300
30 285 590 890 1650 2700
40 245 500 760 1450 2300
50 215 440 670 1270 2000
75 175 360 545 1020 1650
100 160 305 480 870 1400
150 120 250 380 710 1130
Table 8 Gas pipe supply volume
Iron pipe nominal diameter [in inches] Equivalent lengths for pipe fittings in feet (1 foot = 0.3 m)
Pipe fitting type
90° elbow T-piece Shutoff valve Gas shutoff
1 3 5 0.6 1.60
1¼ 4 6 0.8 2.15
1½ 5 7 1.0 2.50
2 7 10 1.3 3.00
2½ 8 12 1.6 3.50
Table 9 Equivalent lengths for pipe fittings
DANGER: Risk of explosion!
Leakage from the gas pipes and gas connections may
cause an explosion.
▶ Carry out a proper leak test using leak detector fluid.
NOTICE: Risk of system damage due to short-circuits!
▶ Cover the hazardous locations before checking for
leaks.
▶ Do not spray leak detector onto cable conduits, plugs
or electrical connection cables or allow it to drip onto
them.
Use only sealing compound that is resistant to corrosion
by liquid propane (LP) for the pipe connections. The
sealing compound must be applied sparingly to the male
thread of the pipe connections.
If you wish to convert the boiler to propane, please
contact Buderus for the required conversion kit.
Do not attempt to convert the appliance without the
approved Buderus parts and the relevant technical
documentation. The technical documentation is
included with the conversion parts.
For information about the identification of the main gas
orifice and the nominal gas orifice pressure for natural
gas and propane gas, see Chapter 2.8.3, page 7.