Installation At High Altitudes - Buderus Logano plus GB312 Installation And Service Instructions Manual

6
Installing the boiler
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2
3
Fig. 30 Pipe connection to gas valve
[1] Gas supply
[2] Manual shut-off valve (supplied)
[3] Sediment trap
[4] Gas connection with shutoff valve
DANGER: Risk of system damage due to short-circuits!
▶ Cover the hazardous locations before checking for
leaks.
▶ Never spray or let leak detection agent drip onto
cable entries, plugs or electrical cables/leads.
Length of Gas pipe supply volume in cubic feet of gas /hour
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
Table 13 Gas pipe delivery rate
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 rise
corresponding to a water column of 0.3 inches.
28
4
7 747 010 720-22.1RS
1)
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
Iron pipe Equivalent lengths for pipe fittings in feet
nominal
Type of pipe fitting
diameter
90 ° elbow T-piece
(in inches)
Equivalent lengths in feet
1 3 5
1¼ 4 6
1½ 5 7
2 7 10
2½ 8 12
Table 14 Equivalent lengths for pipe fittings
Disconnect the boiler and its gas shutoff valve from the gas supply pipe
system if that system is subjected to pressure tests in which the testing
pressure exceeds ½ psi.
If the gas supply piping system is subjected to pressure tests in which
the testing pressure is ½ psi or less, it is sufficient to isolate the boiler
from the gas supply piping system by closing the relevant shutoff valve.
▶ Test the boiler and gas supply connections for leaks before
commissioning ( page 32).
Use only sealant that is resistant to corrosion by LPG for pipe
connections. The sealant must be applied sparingly to the external
thread of the pipe connections.

6.11.2 Installation at high altitudes

The boiler is designed for installation at altitudes below 2000 feet above
sea level. If it is to be installed at altitudes higher than 2000 feet, it can
be modified accordingly. Refer to sections 7.11 to 7.14 for CO
adjustment.
Contact Buderus if the installation site is at a high
altitude. Adjust the boiler only as specified in the
relevant technical documentation and use the adjusting
procedure approved by Buderus.
Logano plus GB312 – 6 720 806 273 (2013/01)
Shutoff Gas shutoff
valve valve
0.6 1.60
0.8 2.15
1.0 2.50
1.3 3.00
1.6 3.50
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