Instructions condensing Air heaters type HR
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6.4 Air intake / combustion products discharge
Check for compliance with local / national regulations.
Only the described flue material may be used. This goes for the roof or wall terminal and also
for the piping between the heater and the terminal. Only so the installation is approved.
Always connect a roof terminal for condensing appliances, otherwise condensate can form ice
in the winter on the terminal.
In some cases the roof terminal has to be at least 0,5m above roof level (local regulations).
6.4.1 Flue material
It is only allowed to use CE marked flue material from the manufacturer Muelink &
Grol (M&G) and Burgerhout, type Alu-fix temperature class minimum T120.. These
Flue systems can be bought at your supplier.
Only use one flue pipes from the same diameter as the flue spigots on the heater.
Different manufacturers have different connections systems from the flue pipes. It
is not allowed to combine systems from different manufacturers.
6.4.2 Flue terminals
Only the flue terminals that are provided with the heater may be used. These
terminals are certified together with the heater.
The following terminals are allowed:
HR10-60
- Concentric roof terminal type M&G Skyline 80-80
article: IA8214
•
for h>0,5m above roof
IA8217
- Concentric wall terminal type M&G HR80-80
article: IA8216
HR80-120
- Concentric roof terminal type M&G 130-130 HR
article: IA8307
- Concentric wall terminal type M&G 130-130 HR
article: IA8314
6.4.3 Mounting
Follow the mounting instructions for the flue and air intake materials
enclosed in the packaging of those systems.
Not following those instructions, for example not the correct fixation,
can lead to dangerous situations. Flue leaks can lead to physical
injuries. Always check the flue ways on tightness.
Condensate in the flue system
The During heating, condensate is formed in the discharge system. This condensate must flow
back into the heater. Therefore the flue discharge pipes have to be mounted in such a way that
the inclination of the pipes will result in the condensate flowing into the heater (minimum
inclination 50mm per meter).
When the condensate flows back from a stainless steel or plastic flue system into the heater, a
separate condensate drain should be mounted before the aluminium flue exit from the heater.
6.4.4 Combustion air intake
Single wall, ridged, aluminium, stainless steel, plastic air tight and should withstand corrosion.
To avoid accumulation of water into the supply pipes, they should also be mounted with an
inclination towards the heater.
6.4.5 Maximum flue length
The maximum pressure drop in either the air supply pipe, or the flue pipe ,must not exceed 9
metres straight pipe , excluding the terminal. Whenever bends are used the pressure drop is
greater and therefore a 90° bend will count as 2 metres and a 45° bend as 1 metre. All flue