Adjusting Boiler To Other Gas-Type; Connecting The Gas Supply; Flue Terminal And Air Supply Connections; Flue Terminal Positions - REMEHA Avanta Range 24c Installation & Service Manual

fi g. 14 Connecting gas supply
LT.AL.W7H.000.019
Remeha Avanta Plus
2.4.2

Adjusting boiler to other gas-type

The Avanta Plus boilers are suitable for both natural gas and
propane firing. For propane a kit with restrictor is required.
For Avanta Plus 39c a LPG conversion set with restrictor and
burner is needed.
The boilers are supplied as standard set for natural gas
(G20), therefore the following procedure must be carried out
BEFORE the boilers are fired and commissioned for the first
time on propane:
Fit the conversion kit (instructions included in kit)
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  to the 22 mm Ø boiler
connection.

• Make sure there is no dirt in the gas pipe. Blow through the
pipe before installation or tap well to purge.
• The principle of the 1:1 gas valve ensures the Avanta range
is able to deliver it's full output at inlet pressure down to 17
mbar. However if dynamic pressure below 19 mbar are
experienced ensure this is adequate for ALL other gas
appliances in the property.
• Preferably install a gas filter in the gas pipe to prevent the
gas block from getting dirty.
• 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.

It should not be necessary to provide compartment ventilation
when the boiler is used with a standard concentric flue.
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.
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