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www.blaubergventilatoren.de
KOMFORT EC DE
Fig. 1. Unit design and operating logic
DESIGN
The casing made of double-skinned aluzinc panels, internally filled with
mineral wool layer of 20 or 25 mm for heat- and sound-insulation. The casing
has fixing brackets with vibration absorbing connectors for easy installation.
The spigots for connection to the air ducts are located at the side of the unit
and are equipped with rubber seals for airtight connection to the fair ducts.
The service panel ensures easy access to the unit internals for service works
including cleaning, filter replacement, etc.
The unit is equipped with high-efficient external rotor EC motors and
centrifugal impellers with forward curved blades. The integrated EC motors
have the best power consumption to air capacity ratio and meet the latest
demands concerning energy saving and high-efficient ventilation. EC motors
are featured with high performance, low noise level and totally controllable
speed range. The impellers are dynamically balanced.
The KOMFORT EC DE400/700/1100 models are equipped with high-
efficient counter-flow polystyrene heat exchangers with a large surface area.
The KOMFORT EC DE2000/4000 models are equipped with high-efficient
cross-flow aluminium heat exchangers with a large surface area. The air flows
are fully separated within the heat exchanger. Odour and contaminants
contained in the extract air are not transferred to the supply air flow. Heat
recovery is based on utilization of heat energy contained in the extract air
stream for heating up of supply air stream. Extract air transfers most of its
heat to the intake air flow. Heat recovery reduces heat energy losses in cold
seasons. In summer the heat exchanger performs reverse and transfers
accumulated cold from cool extract air stream to warm supply extract air
stream. This contributes to better performance of the air conditioners in
ventilated premises. The electronic frost protection system based on bypass
and heater is used to prevent the heat exchanger freezing in cold seasons.
The bypass damper is opened and the heater is turned on automatically
according to temperature sensor readings. Cold intake air passes by the
heat exchanger and is warmed up to set temperature in the heat exchanger.
Synchronously extract air that passes by the heat exchanger is used for its
defrosting. After the freezing danger is over the bypass damper is closed, the
heater is turned off and the unit reverts to the normal operation mode. The
drain pan under the heat exchanger block is used for condensate collection
and drainage.
The unit is equipped with an electric heater for operation during cold
seasons at low outside temperature. The integrated electric heater is
activated to warm up supply air flow if set indoor air temperature may not be
reached by means of heat recovery only. Smooth heat output control ensures
automatic supply air temperature maintaining. The unit is equipped with two
integrated overheat protection thermostats, one actuated at +60 °C with
automatic restart and the other one actuated at +90 °C with manual restart.
The KOMFORT EC DE400/700/1100 model includes a built-in G4
(optionally F7) pocket supply filter and a G4 cassette extract filter for efficient
air filtration. The KOMFORT EC DE2000/4000 model includes a built-in G4
supply and extract cassette filters for efficient air filtration.
The unit incorporates an integrated control system with a wall-mounted
control panel and sensor display. The standard delivery set includes a 10 m
cable for connection of the unit and the control panel.
KOMFORT EC DE400-1.5 ... KOMFORT EC DE1100-3.3
KOMFORT EC DE2000-12 ... KOMFORT EC DE4000-21
Supply filter
Control unit
Electric heater
Drain pan
Heat exchanger
Extract fan
Supply fan
Extract filter
EXTRACT AIR
SUPPLY AIR
EXHAUST AIR
INTAKE AIR
INTAKE AIR
EXTRACT AIR
EXHAUST AIR
SUPPLY AIR
Supply fan
Electric heater
Heat exchanger
Duct humidity sensor (option)
Extract filter
Control unit
Extract fan
Drain pan
Bypass air damper
Supply filter
KOMFORT_EC_DE v1(1)_EN.indd 4
07.08.2015 12:39:50
