ALUTHERM
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Boilers 29
ALUTERM A 170 - 300
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Installation, user and service manual
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instructions for user
Heating
Alutherm A 170 - 300
6.3.4
Water connection general
1. Water connections for flow and return are size 2”
2. The installation must have a pressure relief valve (with a capacity higher than the boiler output), mounted in the flow as close as possible (within
50 cm to the threaded connection) to the heat exchanger and an expansion vessel. The capacity of this vessel should be sufficient for the
installation.
3. To avoid blocking and non-volatile lock-out of the boiler control it is recommended to install a by-pass in the installation to guarantee the
minimum flow through the boiler.
The by-pass valve should be mounted as far away from the boiler as possible to have the biggest possible content of the bypass-circuit (also a
big radiator without valves could be used).
4. Drain the condensate a tundish and an U-trap to the sewer.
5. At the highest point of the installation a de-airing device should be mounted.
6.4
Gas connection
1. The gas connection must be done in accordance with all local and national codes, regulations and standards, and in accordance with the
directives of all relevant authorities.
2. The gas pipe of the boiler has a R 1” connection.
3. In order to avoid blockage of the gas valve, ensure that there is no dirt in the gas pipework prior to commissioning.
4. The maximum allowable inlet pressure for the gas valve is 50 mbar.
5. The load as given on the type plate should be checked.
6.5
Air-supply and flue-gas connection
Air connection:
All types have air connection ø 110 mm
Flue gas connection:
ø 200 mm for all types
Allowed Appliance types:
Possibilities for air / flue system; B23 C(11)3 C13 C33 C53 C63
Note:
C63 is not possible for Belgium.
If the inlet air contains dust or dirt one should install a filter or a leaf catcher in the air supply. Filter can be ordered at Dejatech with following article
numbers:
Assembly including two air filters: 101106
Seal ø 150 mm: 101109
Filter: 101108
Warning: Read the manual included in the package very carefully. The total available pressure drop as quoted in the table on page 41 is reduced.
6.5.1 B23
As standard the boiler is delivered as type B23 where the supply air is taken from the room where the boiler has been installed in.
A vertical terminal is recommended
Roof terminals and extensions and/or condensate trap/collector must be obtained by M&G. See page 35.
For pressure drop calculation of appliance type B23 use the table for pressure drop per component and the table for total pressure drop calculation.
See page 32.
For total available pressure drop see table on page 31.
6.5.2
C13
The wall terminal (see page 43) with its expander and/or condensate trap/collector must be obtained by M&G.
For pressure drop calculation of appliance type C13 use the table for pressure drop per component and the table for total pressure drop calculation.
See page 32.
For total available pressure drop see table on page 31.
6.5.3 C33
Roof terminals and extensions and/or condensate trap/collector must be obtained from M&G. See page 35.
For pressure drop calculation of appliance type C33 use the table for pressure drop per component and the table for total pressure drop calculation.
See page 32.
For total available pressure drop see table on page 31.
Terminals must be installed in the same pressure area (within a plane of 1m2)
