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6
Installation
• Use the radiator key to unlock the two latches a quarter
turn (fig. 7, pos. 1).
• Open the latches (fig. 7, pos. 2).
• Remove the casing by lifting it upwards and then pulling
it forwards (fig. 7, pos. 3); do not hold the casing by the
latches.
• Hold the boiler by the rear boiler casing and place it on
the wall bracket.
3
2
2
1
• Level out the boiler.
2
2
Fig. 7
Removing the casing
6.3 Making the gas connection
DANGER
Only carry out work on gas lines if you are
licensed for such work.
• Determine proper size gas pipe for the installation using
see table 2 and see table 3. Do not forget the pipe fitting
losses and observe proper size of the fittings.
• Install the furnished ¾” gas cock on the gas connection.
• Connect the gas pipe to the gas cock (fig. 8, pos. 1) so
that it is free from any strain.
1
Fig. 8
Making the gas connection
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 CAN/CSA B149.1,
Natural Gas and Propane Installation Code.
A sediment trap must be provided upstream of the gas
controls.
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 14 inches W.C.
(35 mbar) or less and a pressure drop of .3 inches W.C. (20 mbar)
14
Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!