Connecting The Gas Supply - REMEHA Avanta Plus 35c Installation And Service Manual

2.4.2 Adjusting boiler to other gas-type
The Avanta Plus boilers are suitable for both natural gas and
propane firing. For the Avanta Plus 39c an optional LPG-set is
needed. The boilers are supplied as standard set for natural
gas (H), therefore the following procedure must be carried out
BEFORE the boilers are fired and commissioned for the first
time on propane: Adjust the fan speed (see Par. 2.9.8) and
adjust the gas/air ratio (see Par. 2.9.3).

2.4.3 Connecting the gas supply

• Before starting any work on the gas supply, turn off the
main isolation valve.
• Connect the gas supply
nection.
• Make sure there is no dirt in the gas pipe. Blow through the
pipe before installation or tap well to purge.
• Make sure that the minimum gas service pressure is high
enough (in full load > 17 mbar).
• Preferably install a gas filter in the gas pipe to prevent the
gas block from getting dirty.
LT.AL.W7H.000.019
• The gas supply must be connected, tested for soundness
and purged by a qualified Engineer and in accordance with
BS6891.
2.5 Flue terminal and air supply connections
The Remeha Avanta Plus is only suitable for room sealed
operation with a standard concentric connection 60/100 mm Ø
or the optional 80/125 mm Ø connection.
Detailed recommendations for air supply and flue terminals are
given in BS 5440.
2.5.1 Flue terminal positions
The flue terminal must be located with care to ensure that the
products of combustion are dispersed properly in all weather
conditions and cause minimum nuisance to the building user
or any adjacent buildings. If the terminal is positioned less
than 2 m above the ground, balcony, or flat roof where access
by persons is possible a suitable guard must be employed.
The boiler will produce a water vapour plume during normal
operation.
Positions for the Remeha Avanta Plus are shown in the figure
and table 02.
16
Remeha Avanta Plus
to the 22 mm Ø boiler con-