Installation At High Altitudes - Buderus Logano plus GB312 Installation Manual

Gas pipe delivery rate in cubic feet of
Length
gas per hour
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. 10 Gas pipe delivery rate
1) Maximum gas pipe delivery rate in cu ft/hr based on a gas spe-
cific gravity of 0.60 and a gas pressure of 0.5 psi or less and a
pressure drop equivalent to a water column of 0.3 inches.
Iron pipe Equivalent lengths for pipe fittings
nominal
diameter
Pipe fitting type
(in inches)
90°
elbow
Equivalent lengths in feet
1 3
1¼ 4
1½ 5
2 7
2½ 8
Tab. 11 Equivalent lengths for pipe fittings
Disconnect the boiler and its gas isolating valve form 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 isolating valve.
V Test the boiler and gas supply connections for leaks
before commissioning (
Use only sealant that is resistant to corrosion by LPG for
the pipe connections. The sealant must be applied spar-
ingly to the external thread of the pipe connections.
Logano plus GB312 - Technical specifications are subject to change without prior notice
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
in feet
T-piece Shutoff Gas
valve cock
5 0.6 1.60
6 0.8 2.15
7 1.0 2.50
10 1.3 3.00
12 1.6 3.50
page 43).
Installing the boiler

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 adjusted accordingly.
Refer to sections 7.11 to 7.14 for CO
Contact Buderus if the installation site is at a
high altitude. The boiler must only be adjust-
ed as specified in the relevant technical doc-
umentation and using the adjusting
procedure approved by Buderus.
6
adjustment.
2
37