BLAUBERG Ventilatoren Hybrid User manual

AIR HANDLING UNIT
USER'S MANUAL
EN
Hybrid

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CONTENTS
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 Hybrid 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..................................................................................................................................................................... 2
Purpose................................................................................................................................................................................................ 4
Delivery set........................................................................................................................................................................................ 4
Designation key.............................................................................................................................................................................. 4
Technical data.................................................................................................................................................................................. 5
Design and operating principle ........................................................................................................................................... 7
Troubleshooting............................................................................................................................................................................. 21
Storage and transportation regulations.......................................................................................................................... 22
Manufacturer’s warranty........................................................................................................................................................... 23
Certificate of acceptance.......................................................................................................................................................... 27
Seller information.......................................................................................................................................................................... 27
Installation certificate.................................................................................................................................................................. 27
Warranty card................................................................................................................................................................................... 27
SAFETY REQUIREMENTS
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 super-
vision 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.
This appliance can be used by children aged from 8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of experience and knowledge if they have been
given supervision or instruction concerning use of the appliance in a safe way and understand
the hazards involved.
Cleaning and user maintenance shall not be made by children without supervision.
Children shall not play with the appliance.
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.
Connection to the mains must be made through a disconnecting device, which is integrated
into the fixed wiring system in accordance with the wiring rules for design of electrical units, and
has a contact separation in all poles that allows for full disconnection under overvoltage catego-
ry III conditions.

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All operations described in this manual must be performed by qualified personnel only, properly
trained and qualified to install, make electrical connections and maintain ventilation units.
Do not attempt to install the product, connect it to the mains, or perform maintenance yourself.
This is unsafe and impossible without special knowledge.
Disconnect the power supply prior to any operations with the unit.
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.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES, READ THE RELEVANT USER MANUALS.
THE PRODUCT MUST BE DISPOSED SEPARATELY AT THE END OF ITS SER
VICE LIFE.
DO NOT DISPOSE THE UNIT AS UNSORTED DOMESTIC WASTE

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DELIVERY SET
DESIGNATION KEY
Name Number
Air handling unit 1 pc.
User’s manual 1 pc.
Packing box 1 pc.
Hybrid Max EERV LS14
Control
S14/S21
Service side
L: left
R: right
Heat exchanger type
_: heat recovery
ERV: energy recovery
Electric heater
_: without an electric heater
E: with an electric preheater
Casing modication
__: without a decorative cover, bypass and damper (centralised AHU)
Max: with a decorative cover, bypass and damper (centralized AHU)
Series of units
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).

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TECHNICAL DATA
The unit is designed for indoor application with the ambient temperature ranging from +10 °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 favourable 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.
OVERALL DIMENSIONS OF THE UNIT mm
A1
A3
A3
A6
A7
ØD1
ØD2A2
B2B1
B2B1
A4
A9
A10
A8
A5
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 B1 B2 D1 D2
Hybrid 1007 615 760 650 790 970 105 226 101 220 95 460 125 7

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A6
A10 A11
A14
A15
A13
A7A8
ØD1
ØD2
A1 A2 A12A3
A1 A2 A3
A4
A9
A5
A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 D1 D2
Hybrid Max 175 760 135 650 11 88 615 28 1070 790 235 730 101 251 106 125 7
Model
Hybrid Max ERV Hybrid Max E ERV Hybrid ERV Hybrid Max Hybrid Max E Hybrid
Unit voltage [V/50 (60) Hz] 1~230
Maximum unit power without an electric heater, a damper
and bypass [W] 58
Electric preheater power [W] — 800 — — 800 —
Maximum current without an electric heater [А] 0,5
Maximum current with an electric heater [A] — 4 — — 4 —
Air flow [m/h] 160
RPM [min-1] 2800
Sound pressure level LpA through the casing at 1 m
distance [dBA] 42 42 42 42 42 42
Sound pressure level LpA through the casing at 3 m
distance [dBA] 32 32 33 32 32 33
Transported air temperature [°С] -25...+40
Casing material Aluzinc
Insulation 20
Extract filter Coarse 90 % / G4
Supply filter ePM1 70 % / F7 (G4)
Connected air duct diameter [mm] 125
Weight [kg] 47 47 31 47 47 31
Heat recovery efficiency [%] 74...89 % 84...95 %
Humidity recovery efficiency [%] 47...60 % — — —
Heat exchanger type Counter-flow
Heat exchanger material Enthalpy membrane Polystyrene
SEC class А А+

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DESIGN AND OPERATING PRINCIPLE
Unit operation logic
Heat recovery
Warm stale extract air from the room flows into the unit, where it is filtered by the extract filter, then air flows through the heat exchanger
and is exhausted outside by the extract fan. Cold fresh air from the outside flows into the unit, where it is cleaned by the supply filter. Then
the air flows through the heat exchanger and is directed to the room with the supply fan.
Supply air is heated in the heat exchanger by transferring the heat energy of warm and humid extract air to the cold fresh air. The air
flows are fully separated while flowing through the heat exchanger. Heat recovery minimizes heat losses, which reduces the cost of space
heating in the cold season.
Without heat recovery for models with bypass
In Summer Cooling mode, the bypass damper is open and room air passes through the heat exchanger without heat transfer. The
temperature of the air is not changed after passing through the heat exchanger.
No heat recovery for models without bypass with S14 automation
Press the "Summer Cooling mode" button on the control panel. The supply fan will stop and only the exhaust fan will run. Open the
windows to allow air from the outside to enter the room.
Freeze protection
The unit has automatic heat exchanger freeze protection modes depending on the unit model. A freezing danger appears, if the exhaust
air temperature downstream of the heat exchanger is below +5 °C and the intake air temperature upstream of the heat exchanger is
below -3 °C.
In case of freezing danger, the supply fan is turned off in the Hybrid (Max) (E) (ERV) S14 units. After temperature increase the unit returns
to the previous operation mode.
In the Hybrid (Max) (E) (ERV) S21 units, there are two modes for frost protection: switching off the supply fan and preheating the air (if
there is a preheater). Mode selection and settings are described in the control system user’s manual.
UNIT DESIGN
1
2
2
3
4
9
9
4
5 6 7
7
7
8
1
10
11
12
A
A
1 Damper (for Hybrid Max (E) (ERV) units).
2 Filter.
3 Electric heater only for Hybrid Max E (ERV) units.

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4 Turbine.
5 CO sensor (option).
6 Humidity sensor (option).
7 Spigot (only for Hybrid (ERV) units).
8 Heat exchanger.
9 Bypass (for Hybrid Max (ERV units).
10 SETUP MODE button (for units with S21 automation system).
11 Mounting bracket.
12 Cable glands.
The unit is equipped with a removable filter access plate. The
plate is secured with knurled screws.
The unit is equipped with a service panel for connection and
maintenance.
tooltip
RIGHTHANDED AND LEFTHANDED MODIFICATIONS OF Hybrid (ERV) UNITS
The figure below shows the arrangement of spigots for left- and right-handed modifications. Choosing the right arrangement can
improve the ease of installation, shorten the length of the ducts and reduce the number of air duct bends.
1
1
22
33
44
1. Intake air 1. Intake air
2. Exhaust air 2. Exhaust air
3. Supply air
4 Extract air
LeftRight

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MOUNTING AND SETUP
READ THE USER'S MANUAL PRIOR TO MOUNTING THE UNIT.
BEFORE INSTALLING ADDITIONAL EXTERNAL DEVICES,
READ THE RELEVANT USER’S MANUALS
Before installing the Hybrid Max (E) (ERV) units, the decorative cover must be removed. To do this, move it upwards and pull it away from
the spigots.
The design of the units allows changing the direction of the air ducts.
To change the direction of the air duct, remove the spigot and remove the plug.
Then mount the spigot in place of the plug and the plug in place of the spigot.
LOCATION OF SPIGOTS AND GRILLES OF Hybrid Max (E) (ERV) UNITS
3
442
1
1 – intake air; 2 – exhaust air; 3 – supply air; 4 – extract air.

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Examples of spigot configurations
Hybrid (ERV)
Hybrid Max (E) (ERV)
The Hybrid Max (E) (ERV) units are equipped with air dampers. When changing the spigot position, it is necessary to reinstall the corre-
sponding damper.
To do this, after removing the spigot and removing the plug, unscrew the four screws holding the damper.
Reinstall the damper.
View from the service panel

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Fix the damper with the screws.
WARNING! Before installation operations route necessary cables and wires to the unit mounting place.
Fasteners for fan mounting are not included in the delivery set and should be ordered separately. While choosing fasteners consider the
material of the mounting surface as well as the weigh of the unit, refer to the“Technical data” section. Fasteners for unit mounting should
be selected by the service technician.
To get the best performance of the unit and to minimize turbulence-induced air pressure losses, connect the straight air duct section to all
the unit spigots. Minimum straight air duct length: equal to 1 air duct diameter on intake side equal to 3 air duct diameters on outlet side.
Push the air ducts onto the flanges of the unit until stop. Flexible ducts must be fixed rigidly with a metal worming clamp.

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INSTALLATION
The unit can be installed under the ceiling or on the wall.
The unit can be mounted on threaded rods or anchor bolts. Mounting brackets for mounting the unit are included in the delivery set.
Depending on the spigot configuration, prepare the necessary holes for the ducts (Ø 150 mm) and fasteners in the ceiling or wall.
To prevent freezing of the wall, the air ducts must be thermally insulated. Ensure a minimum duct slope of 3º downwards towards the
street.
min 3°
When installing through a suspended ceiling, provide openings for ductwork and/or stud bolts.
Unit xing
Fixing to load-bearing surface Fixing through a suspended ceiling Fixing to the wall
12
2*
3
548
7
6
2
2*
3
54
15*
2
4
3
1 — M6 anchor bolt
2 — nut
3 — mounting bracket
4 — anti-vibration washer
5 — washer
* — make sure to use two nuts!
1 — M6 anchor bolt
2 — nut
3 — mounting bracket
4 — anti-vibration washer
5 — washer
6 — anchor sleeve M6
7 — threaded rod M6
8 — suspended ceiling
* — make sure to use two nuts!
1 — M6 anchor bolt
2 — mounting bracket
3 — anti-vibration washer
4 — washer
6 — anchor sleeve M6
* — make sure to use two nuts!

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Installation options for Hybrid Max (E) (ERV) units*
Mounting through a
suspended ceiling.
The recommended distance
between the front grilles is at
least 2000 mm
2000 mm
Mounting to a load-bearing
surface. The spigots run
through the outer wall
WARNING! Wall mounting of the units is only possible with the drain pipes facing downwards.
Horizontal mounting on an
external wall
Vertical mounting on an
external wall

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Installation options for Hybrid (ERV) units*
Mounting to a load-bearing
surface behind a false ceiling
WARNING! Wall mounting of the units is only possible with the drain pipes facing downwards.
Vertical mounting on the wall.
The spigots run through the
outer wall
Vertical mounting on the wall.
The spigots run through the
outer wall
* Other installation options are possible depending on the selected spigot arrangement.

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HUMIDITY SENSOR MOUNTING NOT INCLUDED IN THE DELIVERY SET
Fix the sensor in the exhaust air duct of the unit upstream of the heat exchanger. Connect the sensor connector to the connector with
the cable of the control unit (installed by the manufacturer).
COSENSOR MOUNTING NOT INCLUDED IN THE DELIVERY SET
It must be installed in the exhaust duct upstream of the heat exchanger.
1
2
1 — threaded rivet for fixing the sensor
2 — bushing insulator for the sensor connection cable (for S21
automation the cable is factory-wired)

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Units with S21 automation system
Take off the sensor cover. Connect it as shown in the wiring diagram supplied. Secure the sensor in the exhaust air duct. Close the sensor
cover.
1
+24 V
GND
OUT
NO
COM
3
2
5
4
Units with S14 automation system
Connect a cable (available separately) to the controller. Lead the cable into the exhaust air duct upstream of the heat exchanger. Take off
the sensor cover. Connect it as shown in the wiring diagram supplied. Secure the sensor in the exhaust air duct. Close the sensor cover.
X5
CO2
F_ln
NO
Com
15 14
1 2
For Hybrid (ERV) units installed in a niche, behind a suspended ceiling or plasterboard, it is recommended to use inspection doors (not
included in the delivery set, purchased separately) to close the opening and provide access for maintenance.
A3
A4
A2 A1
A5
Ø D
A1 A2 A3 A4 A5 D
1213 1160 850 913 38 5
Brown
Green
White

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CONDENSATE DRAINAGE
The Hybrid (Max) (E) series units require condensate drainage.
The units are equipped with drain pans and drain pipes (Ø16 mm) to collect and drain the condensate.
1 2
Location of the drain pipe for suspended (1) and wall-mounted (2) units
Remove the plug from the drain pipe. Connect the drain pipe to the sewage system using the U-trap kit (available upon separate order).
The U-trap must be constantly filled with water. The pipe slope downwards must be at least 3°.
Provide free drainage for the condensed water it is accumulated inside the unit that may cause the equipment damage and condensate
outflow to the room.
3
1
2
3
4
min 3°
1 – drain pipe of the unit; 2 – U-trap; 3 – connecting pipe; 4 – sewage system.
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
preheating facilities.
The Hybrid (Max) (E) ERV series units do not require condensate drainage as they are equipped with an enthalpy heat exchanger.

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CONNECTION TO POWER MAINS
The air-handling unit is rated for connection to single-phase AC 1~230 V/50 Hz power mains.
The unit must be connected to power mains using durable, insulated and heat-resistant conductors (cables, wires). The cross section of
the conductors must correspond to the power input of the unit (see technical data). The actual conductor cross-section selection must
be based on its type, maximum permissible heating, insulation, length and installation method.
The external power input must be equipped with an automatic circuit breaker built into the stationary wiring to open the circuit in the
event of overload or short-circuit.
The position of the external automatic circuit breaker must ensure free access for quick power-off of the unit. The trip current must be in
compliance with the consumption current, refer to Technical data.
To access the terminal block, remove the decorative cover (for Hybrid Max (E) (ERV)) and the service panel.
Route the cables to the control unit through the sealed cable glands in the unit.
Complete the electrical connections as shown in the external connections diagram.
POWER OFF THE POWER SUPPLY PRIOR TO ANY OPERATIONS WITH THE UNIT.
THE UNIT MUST BE CONNECTED TO POWER SUPPLY BY A QUALIFIED ELECTRICIAN.
THE RATED ELECTRICAL PARAMETERS OF THE UNIT ARE GIVEN ON THE MANUFACTUR
ER’S LABEL.
ANY TAMPERING WITH THE INTERNAL CONNECTIONS IS PROHIBITED
AND WILL VOID THE WARRANTY.
DO NOT LAY THE CABLE IN CLOSE PROXIMITY TO THE CONTROL PANEL CABLE!
DO NOT COIL THE CABLE FROM THE CONTROL PANEL IN LOOPS WHILE LAYING IT.

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EXTERNAL WIRING DIAGRAM FOR THE UNITS WITH S14 AUTOMATION
X1 L N PK1 PK2 GND Tx Rx +U
L N PE PK1 PK2 GND Tx Rx +U
2 1 – Tx Rx +
PK1* P1
Power supply 230 V, 50 Hz
Brown Yellow Green White
— ELECTRIC SHOCK HAZARD!
Designation Name Contact type Cable type Note
РК1* Fire alarm panel NC 2 x 0.75 mm2Remove the jumper
Р1 External control panel 4 x 0.25 mm2
* Not included in the delivery set.
EXTERNAL WIRING DIAGRAM FOR THE UNITS WITH S21 AUTOMATION
X1 A1 RS485
N L1 C NC FU1
N L1 3 2 FU1
2 1
+24V B A Gnd
+24V B A Gnd
PK1* P1*
Power supply 230 V, 50 Hz
Brown
Yellow
White Green
— ELECTRIC SHOCK HAZARD!
Designation Name Contact type Cable type Note
РК1* Fire alarm panel NC 2 x 0.75 mm2Remove the jumper
Р1 External control panel 4 x 0.25 mm2
* Not included in the delivery set.

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TECHNICAL MAINTENANCE
Maintenance operations of the unit are required 3-4 times per year. They include general cleaning of the unit and the following
operations:
1. Filter maintenance.
Dirty filters increase air resistance in the system and reduce supply air volume. The filters require cleaning not less than 3-4 times per year.
To clean the filters, remove them from the unit. Dirty filters increase air resistance in the system and reduce supply air volume. The filters
require cleaning not less than 3-4 times per year.
2. Heat exchanger maintenance (once per year).
Dust deposits can accumulate on the heat exchanger. To maintain high heat recovery efficiency, regular cleaning is required. To clean
the heat exchanger, remove it from the unit and clean the heat exchanger by using compressed air or a vacuum cleaner. After cleaning,
reinstall the heat exchanger into the unit.
3. Fan maintenance (once per year).
Even in case of regular maintenance of the filters, some dust may accumulate inside the fans and reduce the fan performance and unit
capacity. Clean the fans with a soft cloth, brush, or using compressed air. Do not use water, aggressive solvents, or sharp objects as they
may damage the impeller.
4. Supply air ow control (twice per year).
The supply duct grille may get clogged with leaves and other objects reducing the unit performance and supply air delivery. Check the
supply grille twice per year and clean it as required.
5. Ductwork system maintenance (once in 5 years).
Some dust may accumulate inside the air ducts which reduces the air quality and unit capacity.
Duct maintenance means regular cleaning or replacement.
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING
THE PROTECTION
REMOVE THE FRONT PANEL NOT EARLIER THAN 20 SECONDS AFTER THE UNIT IS
DISCONNECTED FROM THE POWER SUPPLY