BLAUBERG Ventilatoren CIVIC EC DBE 300 User manual

Heat and energy recovery air Handling unit
USER'S MANUAL
EN
KOMFORT EC DBE 300
KOMFORT EC DBE 550
KOMFORT EC DBE 900

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This user’s manual is a main operating document intended for technical, maintenance, and operating staff.
The manual contains information about purpose, technical details, operating principle, design, and installation of the
KOMFORT EC DBE 300/550/900 unit and all its modifications.
Technical and maintenance staff must have theoretical and practical training in the field of ventilation systems and should be able to
work in accordance with workplace safety rules as well as construction norms and standards applicable in the territory of the country.
Safety requirements..................................................................................................................................................................... 3
Purpose................................................................................................................................................................................................ 5
Delivery set........................................................................................................................................................................................ 5
Designation key.............................................................................................................................................................................. 5
Technical data.................................................................................................................................................................................. 6
Design and functioning ............................................................................................................................................................ 8
Mounting and set-up.................................................................................................................................................................. 9
Connection to power mains .................................................................................................................................................. 11
Technical maintenance.............................................................................................................................................................. 12
Troubleshooting............................................................................................................................................................................. 13
Storage and transportation regulations.......................................................................................................................... 13
Manufacturer’s warranty........................................................................................................................................................... 14
Certificate of acceptance.......................................................................................................................................................... 15
Seller information.......................................................................................................................................................................... 15
Installation certificate.................................................................................................................................................................. 15
Warranty card................................................................................................................................................................................... 15
CONTENTS

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SAFETY REQUIREMENTS
All user’s manual requirements as well as the provisions of all the applicable local and national
construction, electrical, and technical norms and standards must be observed when installing
and operating the unit.
Disconnect the unit from the power supply prior to any connection, servicing, maintenance, and
repair operations.
Only qualied electricians with a work permit for electrical units up to 1000 V are
allowed for installation. The present user’s manual should be carefully read before
beginning works.
Check the unit for any visible damage of the impeller, the casing, and the grille before starting
installation. The casing internals must be free of any foreign objects that can damage the
impeller blades.
While mounting the unit, avoid compression of the casing! Deformation of the casing may result
in motor jam and excessive noise.
Misuse of the unit and any unauthorised modifications are not allowed.
Do not expose the unit to adverse atmospheric agents (rain, sun, etc.).
Transported air must not contain any dust or other solid impurities, sticky substances, or fibrous
materials.
Do not use the unit in a hazardous or explosive environment containing spirits, gasoline,
insecticides, etc.
Do not close or block the intake or extract vents in order to ensure the efficient air flow.
Do not sit on the unit and do not put objects on it.
The information in this user’s manual was correct at the time of the document’s preparation.
The Company reserves the right to modify the technical characteristics, design, or configuration
of its products at any time in order to incorporate the latest technological developments.
Never touch the unit with wet or damp hands.
Never touch the unit when barefoot.
This unit is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given
supervision or instruction concerning use of the unit by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the unit.

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THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SERVICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE.
Connection to the mains must be made through a disconnecting device, which is integrated
into the fixed wiring system in accordance with the rules for design of electrical units, and has a
contact separation in all poles that allows for full disconnection under overvoltage category III
conditions.
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent, or
similarly qualified persons in order to avoid a safety hazard.
CAUTION: In order to avoid a safety hazard due to inadvertent resetting of the thermal cut-out,
this appliance must not be supplied through an external switching device, such as a timer, or
connected to a circuit that is regularly switched on and off by the utility.
Ensure that the unit is switched off from the supply mains before removing the guard.
WARNING: If there are any unusual oscillating movements, immediately stop using the appliance
and contact the manufacturer, its service agent or suitably qualified persons.
The replacement of parts of the safety suspension system device shall be performed by the
manufacturer, its service agent or suitably qualified persons.
Fixing means for attachment to the ceiling such as hooks or other devices shall be fixed with a
sufficient strength to withstand 4 times the weight of the appliance.
The mounting of the suspension system shall be performed by the manufacturer, its service
agent or suitably qualified persons.
The appliance is to be installed so that the blades are more than 2.3m above the floor.
Precautions must be taken to avoid the back-flow of gases into the room from the open flue of
gas or other fuel-burning appliances.

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PURPOSE
The unit is designed to ensure continuous mechanical air exchange in houses, offices, hotels, cafes, conference halls, and other utility
and public spaces as well as to recover the heat energy contained in the air extracted from the premises to warm up the filtered stream
of intake air.
The unit is not intended for organizing ventilation in swimming pools, saunas, greenhouses, summer gardens, and other spaces with
high humidity.
Due to the ability to save heating energy by means of energy recovery, the unit is an important element of energy-efficient premises.
The unit is a component part and is not designed for stand-alone operation. It is rated for continuous operation.
Transported air must not contain any flammable or explosive mixtures, evaporation of chemicals, sticky substances, fibrous materials,
coarse dust, soot and oil particles or environments favourable for the formation of hazardous substances (toxic substances, dust,
pathogenic germs).
THE UNIT SHOULD NOT BE OPERATED BY CHILDREN OR PERSONS WITH REDUCED
PHYSICAL, MENTAL, OR SENSORY CAPACITIES, OR THOSE WITHOUT THE APPROPRIATE
TRAINING.
THE UNIT MUST BE INSTALLED AND CONNECTED ONLY BY PROPERLY QUALIFIED
PERSONNEL AFTER THE APPROPRIATE BRIEFING.
THE CHOICE OF UNIT INSTALLATION LOCATION MUST PREVENT UNAUTHORISED
ACCESS BY UNATTENDED CHILDREN.
Name Number
Unit 1 pc.
User's manual 1 pc.
Packing box 1 pc.
DELIVERY SET
DESIGNATION KEY
KOMFORT EC D B E 550E R S21 DTV
Dierential pressure switches
_ – no differential pressure switches
DTV – pre-installed differential pressure switches
Control panel
S21
Design
L – left-hand; R – right-hand
Recovery type
_ – heat recovery
E – energy recovery
Air ow [m3/h]
Heater type
E – electric heater
W – water heater
Additional components
B – bypass
Mounting option
D – suspended mounting
Motor type
EC – electronically commutated motor
Unit series

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TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature ranging from +1 °C up to +40 °C and relative humidity up to
60 % without condensation. In cold, damp rooms, there is a possibility of freezing or condensation inside and outside the casing.
In order to prevent condensation on the internal walls of the unit, it is necessary that the surface temperature of the casing is 2-3 °C above
the dew point temperature of the transported air.
The unit should be operated continuously, and in cases where ventilation is not necessary, reduce the air flow of the fans to a minimum
(20%). This will ensure a favorable indoor climate and reduce the amount of condensation inside the unit, which can damage electronic
components. Never use the unit for dehumidification, for example, of new buildings.
The unit is rated as a Class I electrical appliance.
Hazardous parts access and water ingress protection rating:
IP22 for the unit connected to the air ducts
IP44 for the unit motors
The unit design is constantly being improved, thus some models may be slightly different from those described in this manual.
KOMFORT EC DBE 300
øD
B1
H
H1
L
L1
B2
B5
B3
B
B4
ø d
ø12
TECHNICAL DATA
MODEL KOMFORT EC DBE
300/300E
KOMFORT EC DBE
550/550E
KOMFORT EC DBE
900/900E
Voltage [V/50 (60) Hz] 1~ 230
Maximum fan power [W] 180 297 442
Power of the integrated electric heater [W] 1500 2000 3300
Maximum air flow [W] 1680 2297 3742
Maximum unit current without a heater [A] 1,4 2,4 3,1
Current of the integrated electric heater [A] 6,5 8,7 14,3
Maximum current of the unit with an electric heater [A] 7,9 11,1 17,4
Air flow [m3/h] 340 620 1030
Rotation speed [min-1] 3270 3100 2720
Noise level, 3 m [dBA] 27 30 33
Transported air temperature [°C] -25...+40
Casing material Aluzinc
Insulation, mineral wool [mm] 20
Filtering class of the extract filter G4
Filtering class of the supply filter G4 (optional – F7)
Connecting air duct diameter [mm] 160 200 250
Weight [kg] 44 67 111
Heat recovery efficiency [%] 72...90/69...87 78...90/69...87 75...88/69...85
Heat exchanger type Counter-flow
Heat exchanger material Polystyrene/Enthalpy
SEC class A A A
*Energy recovery units are equipped with an enthalpy heat exchanger, which does not require condensate drainage.

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KOMFORT EC DBE 550
øD
B1
H
H1
L
L1
B5
ø d
ø14
B3
B
B4
B2
KOMFORT EC DBE 900
L1
ø d
øD
B2B1 H
H1
L
B4B3
B
B5
ø14
Dimensions [mm]
Model Ø D В В1 В2 ВЗ В4 В5 H H1 L L1 Ø d
KOMFORT EC DBE 300 160 485 415 555 135 214 577 281 129 1238 1290 9
KOMFORT EC DBE 550 200 827 622 713 188 345 960 280 120 1238 1290 9
KOMFORT EC DBE 900 250 1351 607 607 522 607 1483 318 143 1349 1402 9

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The unit operates as follows:
Warm stale extract air from the room flows through the air ducts to the unit, where it is filtered, then air flows through the heat exchanger
and is exhausted outside by the extract fan through the air ducts.
Clean cold air from outside is moved by the supply fan to the unit, where from it is directed to the supply filter. Then filtered air flows
through the heat exchanger and moves to the room through the air ducts.
Heat energy of warm extract air is transferred to clean intake fresh air from outside and warms it up.
Heat recovery minimizes thermal energy losses, energy demand and operating costs for air heating accordingly.
The unit is equipped with a detachable service panel for repair works and preventive maintenance and a cover enabling access to the
control system components.
OPERATING LOGIC
Supply air
Extract air
Exhaust air
Intake air
The basic unit delivery set includes a remote control panel for connection to the control system inside the unit casing.
The unit comprises a supply and an extract centrifugal single-inlet fan with forward curved blades and maintenance-free EC motors with
external rotor and built-in overheat protection, a plate counter-flow heat exchanger and an electric heater.
The supply G4 filter cleans supply air flow and prevents contamination of the unit parts.
The extract G4 filter prevents contamination of the unit components.
Some condensate may be generated during heat recovery.
The condensed fluid is collected in the drain pan and is removed from the unit through the drain hoses.
UNIT DESIGN
Extract fan
Supply lter
Extract lter
Bypass
Supply fan
Drain pan
Electric heater
Control unit
Heat exchanger
Dierential
pressure switch
Dierential
pressure switch
DESIGN AND OPERATING PRINCIPLE

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While mounting the unit provide enough space for its servicing and maintenance.
Minimum distance required to access
the unit
Control unit
Type KOMFORT EC DBE 300 KOMFORT EC DBE 550 KOMFORT EC DBE 900
min A [mm] 500 850 800
UNIT MOUNTING
The unit is designed for suspended mounting by means of the threaded rod fixed in the threaded dowel.
Washer
Nut
Vibration-absorbing
rubber
Nut and
lock-nut
Example
To attain the best performance of the unit and to minimise turbulence-induced air pressure losses, while mounting connect a straight air
duct section on both sides of the unit.
Minimum straight air duct length:
• equal to 1 air duct diameter on intake side.
• equal to 3 air duct diameters on outlet side.
If the air ducts are not connected or the connected air ducts are too short, protect the unit parts from ingress of foreign objects by covering
the spigots with a protecting grille or other protecting device with mesh width not more than 12.5 mm to prevent uncontrollable access
to the fans.
MOUNTING AND SETUP
READ THE USER'S MANUAL BEFORE INSTALLING THE UNIT.

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The unit is available with the service side located on the left and on the right of the unit to facilitate mounting and provide minimum
service access.
Supply air Extract air
Exhaust air Intake air
Supply air
Extract air
Exhaust air Intake air
Right-hand modification Left-hand modification
Service side
Service side
(bottom view) (bottom view)
Safety precautions
The unit is designed for mounting on a rigid and stable structure.
The unit is mounted with anchor bolts. Make sure that a mounting construction has sufficient load capacity matching the unit weight.
Otherwise reinforce the installation place by beams, etc. If the threaded bolts used for the unit mounting are too short, the unit can
generate abnormal noise and resonate with the ceiling. The suspended bolts must be long enough to prevent resonating.
If the unit connection place to the spiral seam duct is supposed to be the source of abnormal noise, replace the spiral seam air duct with
the flexible one. Optionally the flexible connectors may be used to prevent resonating.
CONDENSATE DRAINAGE
The condensate drain pan in the heat recovery section is equipped with two hoses for extracting the condensed fluid outside the unit.
Connect the pipe, U-trap (not included in the delivery set) and sewage collection system with metal, plastic or rubber connecting pipes.
The pipe slope downwards must be at least 3°. Fill up the system with water before connecting the unit to power mains!
The U-trap must always be filled with water during the unit operation. Make sure that the water flows freely into the sewage collection
system or otherwise condensed water may build up in the unit during the heat exchanger operation and cause equipment failure and
condensed water outflow into the premises. The condensate drainage system is designed for normal operation in premises with air
temperatures above 0 °C. If the expected ambient air temperatures are below 0 °C, the condensate drainage system must be equipped
with heat insulation and pre-heating facilities.
For models with energy recovery, no condensate drainage is required as they are equipped with an enthalpy heat exchanger.
min 3°
Drain pipe
Sewage system
Pipe
Pipe
U-trap
175 mm
min
70 mm
min