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www.blaubergventilatoren.de
KOMFORT EC DW
Fig. 10. Mounting
Washer
Nut
Vibration absorbing
rubber
Nut and lock
nut
The unit is suspended using threaded rods and threaded dowels.
The unit must be mounted to an even surface to avoid the unit casing
distortion and operation disturbances. The installation place must have
connection to the drain system. While planning the ductwork layout
avoid too long air duct sections, numerous bends and reducers because
it may reduce air flow. The mounted air ducts must not be deformed.
Provide airtight connection of the air ducts to the unit spigots and fittings.
Install straight air ducts on both sides of the unit to minimize aerodynamic
resistance caused by air flow turbulence, the minimum air duct section
length is equal to 1 time air duct diameter on the inlet side and 3 time air
duct diameters on the outlet side.
In case of insufficient length or no air ducts cover the unit spigots with a
protecting grille or any other protecting device with maximum mesh width
12.5 mm to prevent ingress of foreign objects inside the unit and to prevent
contact with fans of the unit.
Prior to starting mounting make sure the mounting surface has sufficient
load capacity matching the unit weight. Otherwise reinforce the installation
place with beams. Use threaded rods of sufficient length to avoid possible
resonance with a mounting surface. If the connection point of the spiral
seam air duct to the unit is supposed to be a source of noise generation,
replace a spiral seam air duct with a flexible air duct. The flexible anti-
vibration connectors (specially ordered accessories) may also be useful.
Fig. 11. Water heater connection
In order to achieve maximum power the water heater should be counter-
flow connected (Fig. 11). All calculation diagrams (ref. Fig. 5-8) are valid for
the counter-flow connection of the water heater.
In case of the direct-flow basis connection the water heater has lower
power but higher frost-resistant properties.
Counter-flow connection
Direct-flow connection
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r inle
t
wate
r retu
rn
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r inle
t
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ATTENTION!
The unit operates either in Winter or Summer mode. If the outside air temperature is below +10 °C the Winter mode is activated. If the outside temperature
a10 °C the unit operates in Summer mode.
In Summer mode the unit operates regardless of the return heat medium temperature in the mixing unit.
In Winter mode the unit has following temperature limits:
The unit may not be started when the return heat medium temperature is below +40 °C. If the return heat medium temperature is +40 °C and higher
the unit will be turned on with a 90 seconds delay.
The unit turns off when the return heat medium temperature falls below +20 °C.
KOMFORT EC DW v1(6)_EN.indd 10
10.08.2015 10:11:04
