6
Installing the boiler
Logano plus GB312 – 6 720 806 273 (2013/01)
28
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
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
2
adjustment.
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
pipe in feet
Gas pipe supply volume in cubic feet of gas /hour
1)
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.
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 13 Gas pipe delivery rate
7 747 010 720-22.1RS
1
4
2
3
Iron pipe
nominal
diameter
(in inches)
Equivalent lengths for pipe fittings in feet
Type of pipe fitting
90 ° elbow T-piece
Shutoff
valve
Gas shutoff
valve
Equivalent lengths in feet
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 14 Equivalent lengths for pipe fittings
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.
