E93.1001EN.C Manual CD
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A few examples of flue gas material suitable for ECO water heaters:
CE String for Plastic PPs: EN14471 T120 P1 W 2 O(30) I C/E L
CE String for Stainless Steel: EN1856-1 T250 P1 W V2-L50040 O (50)
When selecting flue gas systems, be aware that the minimum requirements are met. So only select flue gas ma-
terials having the same or better properties than this table.
Never use aluminium containing fluegas pipes in these water heaters.
Connecting diameters and tolerances:
mat
water heater
d
nom
D
outside
d
inside
L
insert
SS
CD80
80
80 +0,3/ -0,7
81 +0,3/ -0,3
50 +2/ -2
SS
CD100, CD120
100
100 +0,3/ -0,7
101 +0,3/ -0,3
50 +2/ -2
SS
CD150, CD180
130
130 +0,3/ -0,7
131 +0,5/ -0,5
50 +2/ -2
PP
CD80
80
80 +0,6/ -0,6
50 +20/ -2
PP
CD100, CD120
100
100 +0,6/ -0,6
50 +20/ -2
PP
CD150, CD180
130
130 +0,9/ -0,9
50 +20/ -2
Multiple water heaters can be connected to a common duct. These flue gas systems for multiple water heater
installations must always be engineered as zero or negative pressure systems; this to prevent the risk of recircu-
lation of the flue gases. Consult the flue gas supplier for detailed information and engineering. See also the cas-
cade manual for these multiple water heater installations.
More information about these common fluegas systems can be found at the cascade-installation manual. You
can find the cascade manual at the website: http://www.ecohs.nl/products/ambassador-/documentation/
6.5
Air supply
When an air supply duct is connected from the outside of the building to the water heater, the water heater will
operate as a room-independent water heater (closed water heater).
The air supply duct can be made of:
•
PVC / PP
•
Thin-walled aluminium
•
Stainless steel
C
OMBUSTION AIR QUALITY
Combustion air must be free of contaminants. For example: chlorine, ammonia and/or alkali agents, dust, sand
and pollen. Remind that installing a water heater near a swimming pool, a washing machine, laundry or chemical
plants does expose combustion air to these contaminants.
A
IR SUPPLY THROUGH HUMID AREAS
When the supply duct will be placed in a water heater room with moist air (for example: greenhouses), a double
walled supply duct or an insulated duct must be used to prevent the possible condensation at the outside of the
duct. It is not possible to insulate the internal air pipes of the water heater and therefore condensation at the
internal air canals must be prevented.
When roof mounted, the air supply duct needs to be protected against rain, so no water will be entering the water
heater.