E93.1001EN.C Manual CD
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FLUE GAS AND AIR SUPPLY SYSTEM
6.1
General
The water heater has a positive pressure flue system. The available combined pressure drop for the inlet and
outlet system, for a single water heater,
is 200 Pa for the complete water heater range.
For a multiple water
heater installation, always contact the manufacturer for advice.
Notice:
•
Install the horizontal flue components with an angle of 3° downwards in the direction of the water heater
(roughly equal to five centimetres for every linear meter). When not installed accordingly, it may result in
condensate building-up in the flue gas tube, eventually causing component failure.
•
Wall flue terminals are generally used up to 80 kW. Using these terminals with larger capacities will give
unpleasant large condensate clouds.
•
When using a wall terminal, there is the possible risk of ice building-up on surrounding parts/structures, be-
cause the condensate will freeze. This risk should be taken into account during the design phase of the DHW
installation.
Note:
Because the flue gases can have a relatively low temperature, the water heater needs to have a high efficiency
approved stainless steel or plastic flue system. These materials should be usable for the applied pressure in the
flue gas system, be condensate proof and have a temperature class of
T120.
Before installing, read the installation manual(s) of the supplier of the flue gas and air supply parts in-
cluded with the parts. Manuals for parts supplied by ECO can be found at:
http://burgerhout.nl/documenten/handleidingen/
(Only Dutch language available)
.
Undermentioned manuals for parts supplied by ECO HS are applicable:
- Regulations regarding fluegas systems PP(s)
- Installation instructions clamps: Checklist
- Installation instructions Skyline 3000
6.2
Heights on roof
Height A
This is the height of the air inlet. A rain hood should prevent
rainwater entering the air supply system.
When the inlet and outlet are mounted on a flat roof, the inlet should
be at least 60 cm above the roof surface and at least 30 cm above
the maximum snow level.
Example 1:
When the maximum snow level on the roof surface is 45 cm then the
air inlet should be at 45+30=75 cm. 75 cm is more than the minimum
60 so the height will be 75 cm.
Example 2:
When the maximum snow level on the roof surface is 15 cm then the
air inlet should be at 15+30=45 cm. 45 cm is less than the minimum
60 cm so the height will be 60 cm.
Height difference B
This is the height difference between the flue outlet and the air
inlet.
The flue gas outlet should be at least 70 cm above the air inlet. It is
advised to be equipped with a conical outlet.
A single flue outlet should be situated at least 100 cm above the
roof surface.
Distance C
The horizontal distance between the flue gas pipe and air inlet
pipe at roof level.
This distance should be at least 70 cm.
B
A
C
