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Installation 6
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We reserve the right to make any changes due to technical modifications!
Installation and Servicing Instructions Logamax plus GB142-24/30/45/60 • Version 12/2004
Buderus Hydronic Systems • http://www.buderus.net
z Use the radiator key to unlock the two latches a
quarter turn (fig. 7, pos. 1).
z Open the latches (fig. 7, pos. 2).
z Remove the casing by lifting it upwards and then
pulling it forwards (fig. 7, pos. 3); do not hold it by the
latches.
z Hold the appliance by the rear appliance casing and
place it on the wall bracket.
z Level out the appliance.
6.3 Making the gas connection
z Determine proper size gas pipe for the installation
using table 2 and table 3. Do not forget the pipe fitting
losses and observe proper size of the fittings.
z Install the furnished ¾” gas cock on the gas connec-
tion.
z Connect the gas pipe to the gas cock (fig. 8, pos. 1)
so that it is free from any strain.
Fig. 7 Removing the casing
1
2
2
2
2
3
Fig. 8 Making the gas connection
1
DANGER
Only carry out work on gas conduits and
fittings if you are licensed for such work.
Length of
pipe (feet)
Gas Volume Capacity
(ft
3
/ hr)
1
¾" 1" 1 ¼" 1 ½"
10 278 520 1,060 1,600
20 190 350 730 1,100
30 152 285 590 890
40 130 245 500 760
50 115 215 440 670
75 93 175 360 545
100 79 160 305 480
150 64 120 250 380
Table 2 Gas Pipe Capacity for different pipe sizes
1 Maximum pipe capacity in ft
3
/hr, based on a specific gravity of
.60 (42 mbar) and a inlet gas pressure of .5 psi (35 mbar) or less
and a pressure drop of .3 inches W.C. (20 mbar)
NOTICE
When installing the gas supply connection, it
must comply with local regulations or, if such
regulations do not exist, with the National
Fuel Gas Code, ANSI Z 223.1.
In Canada, the gas supply connection
must comply with local regulations or, if such
regulations do not exist, with
CSA/CGA-B149 Installation Guidelines.
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