Page 1
OPERATION MANUAL
FRESHBOX E120
SINGLE‐ROOM HEAT RECOVERY
AIR HANDLING UNIT
EN
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FRESHBOX E120
3 Introduction
3 General
3 Safety rules
3 Transportation and storage rules
3 Manufacturer's warranty
4 Design
4 Operating logic
5 Delivery set
5 Technical data
6 Mounting
8 Connection to power mains
9 Unit control
14 Maintenance
16 Troubleshooting and fault handling
17 Acceptance certi cate
17 Connection certi cate
17 Warranty card
CONTENTS
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FRESHBOX E120
BLAUBERG Ventilatoren GmbH Company is happy to o er your attention
single-room heat recovery air handling unit FRESHBOX E120.
INTRODUCTION
The present operation manual contains a technical description, technical
data sheets, operation and mounting guidelines, safety precautions and
warnings for safe and correct operation of the unit. Read carefully and
understand the operation manual, especially the safety requirements, before
the unit mounting and start up. Keep the operation manual available as long
as you use the unit.
GENERAL
The heat recovery air handling unit is designed for e cient and energy
saving ventilation of ats, houses, cottages and other small premises.
The unit is designed for wall mounting. The unit is available for round Ø125
mm air ducts. The unit is rated for non-stop operation.
The unit is rated for indoor application at ambient temperature from +1 °C
up to +60 °C and relative humidity not exceeding 80%. The transported air
temperature must be within -25 °C up to +50 °C.
Hazardous parts access and water ingress protection rating:
Unit motors - IP 44;
Assembled unit connected to air ducts - IP 22.
The unit design is regularly improved, so some models can slightly di er
from those ones described in this service instruction.
SAFETY RULES
All operations related to the unit electrical connections, servicing and
repair works are allowed only after the unit disconnection from power mains.
The unit is rated as a Class I electrical appliance. All mounting and servicing
operations are allowed by duly quali ed personnel. Please follow the safety
regulations and working instructions (DIN EN 50 110, IEC 364).
Make sure the impeller and the casing are not damaged before connecting
the unit to power mains. The casing internals must be free of any foreign
objects which can damage the impeller blades. The unit maintenance and
repair is allowed only after power cut-o and full stop of the rotating parts.
Misuse of the unit or any unauthorized modi cation are not allowed.
The unit is designed for connection to ac single-phase power mains, see
«Technical Data».
The unit is rated for permanent operation. Take steps to prevent ingress
of smoke, carbon monoxide and other combustion products into the room
through open chimney ues or other re-protection devices. Su cient
air supply must be provided for proper combustion and exhaust of gases
through the chimney of fuel burning equipment to prevent back drafting.
The maximum permitted pressure di erence per living units is 4 Pa.
The transported air must not contain any dust or other solid impurities,
sticky substances or brous materials.
The unit is not rated for operation in a ammable or explosive medium.
Ful l the operation manual requirements to ensure a trouble-free and long
service life of the unit.
TRANSPORTATION AND STORAGE RULES
Transportation of the unit is allowed by any vehicle provided the unit is
transported in the original package and is protected against weather and
mechanical damages.
Use hoist machinery for handling and transportation to prevent possible
mechanical damages of the unit. Ful l the requirements for transportation of
the speci ed cargo type during cargo-handling operations.
Store the unit in a dry and cool place in the original packing. The storage
environment must not be subjected to any aggressive and/or chemical
evaporations, admixtures, foreign objects that may provoke corrosion and
damage connection tightness.
Store the unit in an environment with minimized risk of mechanical
damages, temperature and humidity uctuations. Do not expose the unit to
the temperatures below +10 °C and above +40 °C .
Connection of the unit to power mains is allowed after the unit has been
kept indoor for minimum two hours.
MANUFACTURER’S WARRANTY
The unit complies with the requirements according to the EU norms
and directives, to the relevant EU-Low Voltage Equipment Directives, EUDirectives on Electromagnetic Compatibility.
We hereby declare that the unit complies with the essential protection
requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/EEC
and Low Voltage Directive 2006/95/EC, 73/23/EEC and CE-marking Directive
93/68/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility. This certi cate is issued following test carried
out on samples of the product referred to above. Assessment of compliance of
the product with the requirements relating to electromagnetic compatibility
was based on the following standards.
The manufacturer hereby warrants normal operation of the unit over the
period of two years from the retail sale date provided observance of the
installation and operation regulations. In case of failure due to manufacturing
fault during the warranty period the consumer has the right to exchange it.
The replacement is o ered by the Seller.
If case of no con rmation of the sale date, the warranty period shall be
calculated from the manufacturing date.
The manufacturer shall not be liable for any damage resulting from any
misuse of or gross mechanical interference with the unit.
The manufacturer is not responsible for the damages resulted due to the
use of third party equipment or to third party equipment.
WARNING
Do not dispose in domestic waste.
The unit contains in part material that
can be recycled and in part substances that should
not end up as domestic waste. Dispose of the unit
once it has reached the end of its working life according to the regulations valid in your country.
WARNING
The unit is not allowed for use by chil-
dren and persons with reduced physical, mental or sensory capacities, without proper
practical experience or expertise, unless they are
controlled or instructed on the product operation
by the person(s) responsible for their safety. Supervise the children and do not let them play with the
product.
!
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FRESHBOX E120
Fig. 1. Unit design and operating logic
DESIGN
The double-skinned unit casing is made of white polymer-coated steel
plates, internally heat- and sound insulated with 10 mm cellular rubber layer.
The unit casing is equipped with xing elements for wall mounting. 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 air ducts.
The unit is equipped with high-e cient external rotor EC motors and
centrifugal impellers with forward curved blades for air supply and exhaust.
The unit is equipped with a high-e cient counter- ow polystyrene
heat exchanger with a large surface area. The air ows are fully
separated within the heat exchanger. Odour and contaminants
contained in the extract air are not transferred to the supply air ow.
The electronic frost protection system is used to prevent the heat
exchanger freezing in cold seasons. The air temperature behind the heat
exchanger falls down as ice gets accumulated in the heat exchanger. If
exhaust air temperature falls down below +3 °C the supply fan is shut down.
Meanwhile the warm extract air ow warms up the heat exchanger and the
ice melts. As air temperature behind the heat exchanger rises above +3 °C,
the supply fan restarts and the unit reverts to the rated operation mode.
The drain pan under the heat exchanger unit is designed for condensate
collection. As the drain pan is lled with condensate the unit is turned o
and the status is displayed by the indicator on the control panel. Empty the
condensate from the drain pan and restart the unit.
The unit is equipped with a 350 electric posistor heater used for operation
of the unit at low outside air temperatures. The electric heater has integrated
overheating protection.
Two integrated panel lters are used for e cient air supply and air
extraction.
The units incorporates an integrated control system and a
multifunctional external control panel with LCD display and a remote control.
OPERATING LOGIC
Cold fresh air from outside ows through the heat exchanger and is
moved to the room with the supply fan.
Warm extract air is extracted from the room with the exhaust fan and is
moved through the heat exchanger, where it transfers its heat energy to the
intake air. After that it is exhausted outside.
Heat energy of warm and humid extract air is transferred to the cold fresh
air. The air ows are fully separated while owing through the heat exchanger.
Heat recovery minimizes heat losses caused by traditional window
ventilation and saves energy.
In summer the heat exchanger performs reverse and transfers cold
from the cooled extract air to the warm fresh air. This contributes to better
performance of the air conditioner in ventilated premises.
EXHAUST FAN
EXTRACT AIR
SUPPLY AIR
INTAKE AIR
EXHAUST AIR
SUPPLY FILTER
DRAIN PAN
HEAT EXCHANGER
SUPPLY FAN
POSISTOR HEATER
EXTRACT FILTER
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FRESHBOX E120
TECHNICAL DATA
Table 1. Technical data of the unit
Parameters FRESHBOX E120
Speed 1 2 3
Unit voltage, 50 Hz [V] 1~ 230
Max. fan power [W] 9 16 40
Electric heater power [kW] 0.35
Electric heater current [A] 1,6
Total unit power [kW] 0.39
Max. unit current [A] 1.7
Air capacity [m
3
/h] 40 80 120
RPM 450 780 2000
Sound pressure level at 3 m distance [dB(A)] 30 35 38
Transported air temperature [°С] -25 up to +60
Casing material painted steel
Insulation 10 mm cellular rubber
Extract lter panel G2
Supply lter panel G4
Replaceable lter kit* FP-FRESHBOX E120
Connected air ducts diameter [mm] 125
Weight [kg] 20
Heat recovery e ciency [%] 82 up to 92
Heat exchanger type counter- ow type
Heat exchanger material polystyrene
*replaceable lter kits and summer blocks are specially ordered accessories and are available on a separate order.
Fig. 2. Overall dimensions
DELIVERY SET
9 Air handling unit - 1 item;
9 Operation manual - 1 item;
9 Control panel - 1 item;
9 Master plate - 1 item;
9 Packing box - 1 item;
9 Fixing kit - 1 item.
WARNING
Make sure the unit has no visible transport damages
while accepting the goods. Check the ordered and the
delivered goods for compliance.
!
580
87
500 200
125
255
122,5122,5
260
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FRESHBOX E120
The unit mounting location must provide su cient service access to the
unit. The unit must be mounted on the even surface to avoid the unit casing
distortion and operation disturbances. Provide airtight connection of the air
ducts to the unit spigots and ttings.
While mounting the unit consider the need to ensure access to the
service panel for lter maintenance and replacement. The minimum required
distance from the unit to the surfaces is shown in Fig. 3.
The unit is mounted using a mater plate included in the delivery set, Fig. 4
as well as two air ducts of required length and the outer ventilation hood AH
FRESHBOX E120 or MS2 FRESHBOX E120 mounting kit.
The mounting kit MS2 FRESHBOX E120 includes:
- two air ducts, 500 mm long.
- a master plate for hole marking.
- AH FRESHBOX E120 outer ventilation hood for prevention of ingress of
foreign objects inside the unit.
In case of the unit mounting in the walls above 500 mm thickness two air
ducts Ø 125 mm of required length must be provided.
MOUNTING
!
Safety precautions:
The unit must be mounted to a rigid and stable structure.
The unit mounting is performed by means of anchor bolts. Before starting mounting check that the mounting structure has
su cient loading capacity for the unit weight.
The unit mounting is allowed only after power cut-o and full stop of the rotating parts.
Warning!
Do not operate the unit beyond the determined temperatures, in aggressive and in explosive medias.
Do not connect clothes dryer or other similar equipment to the ventilation system.
Do not use the unit for air/dust mixture handling.
WARNING!
Fig. 3. Minimum mounting distances
Fig. 4. Mounting master plate
min 300 mm min 300 mm
2 holes for Ø 125 mm air ducts
Fill the gaps between the air ducts and
the wall with mounting foam
2 holes for Ø 125 mm air ducts
Fill the gaps between the air ducts and the
wall with mounting foam
Drill 4 holes in the wall with Ø 8 mm tool
for 90 mm depth using a master plate
Drill 4 holes in the wall with Ø 8 mm tool for
90 mm depth using a master plate
Sealing gland for power
cable
Sealing gland for power cable
497
420
255
38,5
180
85
145
190
545
575
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FRESHBOX E120
General mounting sequence is shown in Fig. 5.
Unit mounting using MS2 FRESHBOX E120:
Fix the master plate on the wall at a required height using a sealing
tape. Use the master plate to mark two Ø 130 mm holes for the air ducts and
four Ø 8 mm holes for the fasteners.
Remove the master plate and drill through holes for the air ducts and
90 mm deep holes for the fasteners. Install the dowels, remove the perforated
master plate parts and x the master plates on both sides of the wall using a
sealing tape.
Fix the outer ventilation hood AH FRESHBOX E120 on outer side.
Insert the air ducts into the mating master plate holes and connect
those to the outer hood connection piece.
Fix the gaps between the air ducts and the wall with a mounting foam
through openings in the master plate. After the mounting foam hardening
remove the master plate, the foam excess and cut the protruding parts of the
air ducts to be ush with the wall.
Open the unit panel and remove the heat exchanger.
Insert the unit spigots into the air ducts.
Fix the unit on the wall with countersunk screws and 8x80 dowels
included in the delivery set by installing those in four Ø 8 mm holes.
Install the heat exchanger and close the unit panel.
UNIT
TWO AIR DUCT Ø 125 MM
FOUR DOWELS
AND SCREWS
FOUR DOWELS AND SCREWS
(INCLUDED IN THE OUTER HOOD
DELIVERY SET)
OUTER HOOD
Fig. 5. Unit mounting
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FRESHBOX E120
The unit is rated for connection to single-phase alternating current power
mains 230 V / 50 Hz via a pre-wired power cable with plug, Fig. 6. In case of
need to connect a longer cable follow the wiring diagram in Fig. 7. The electric
connections must be performed with insulated, durable and heat-resistant
conductors (cables, wires) with a matching cross section. While selecting
the conductors with respective cross section consider the wire type, the
maximum permissible conductor heating temperature, its insulation, length
and layout.
Use copper wires only! The unit must be grounded in compliance with
the valid electrical standards of the user country!
Fig. 6. Power cable wiring diagram
Cut power supply to the unit o by turning the automatic electric switch
QF to OFF position prior to any operations.
Take steps to prevent activation of the automatic switch.
QF
CONNECTION TO POWER MAINS
WARNING
Read the operation manual prior to any electric installations. Connection of the unit to power mains is allowed by a
quali ed electrician only.
The rated electrical parameter are stated on the rating plate. No modi cations of internal connections are allowed and will
result in void warranty service.
Connect the unit only to power mains with valid electric standards.
Follow the respective electric standards, safety rules (DIN VDE 0100), TAB der EVUs. The house cabling system must be
equipped with an automatic switch at the external input. Connect the unit to power mains through the automatic switch. The
contact gap on all poles at least 3 mm (VDE 0700 T1 7.12.2 / EN 60335-1).
The automatic switch trip current must be not below the rated current consumption, refer Table 1. Install the automatic
switch to ensure prompt access.
Unit
1
L
LN PE
XP3
X1
NPELA
23 45 6
~ 230 V / 50 Hz
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FRESHBOX E120
Week day
Low speed indication
Medium speed indication
High speed indication
Room temperature
Total time
Timer ON indication
Timer OFF indication
Heater ON indication
UNIT CONTROL
The unit is controlled via a control panel and a remote control, Fig. 7.
Fig. 7. Control panel and remote control
Fig. 8. Control panel display in OFF mode.
Fig. 9. Control panel display in ON mode.
Unit ON/OFF
Operation control buttons (see details below)
Fan speed control buttons
Remote control
Remote Controller
Unit ON/OFF
Fan speed UP
Heater ON
Heater OFF
Fan speed DOWN
Low speed ON
High speed ON
Medium speed ON
Scheduled operation ON
Timer ON/OFF
Control panel
Countdown indication of the time
required for heat removal from the
heating elements [min:s]
Week day
Total time
Room temperature
OFF indication
Indication of heat removal from
the heating elements
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FRESHBOX E120
Function Button/Button combination Indication
1 Unit activation/deactivation
Using the remote control.
Fig. 8
Fig. 9
Using the control panel.
2
Speed selection
Low speed - 40 m3/h, medium speed - 80 m3/h, high speed - 120 m3/h.
Speed setting up via the control panel (low-medium-high).
Fig. 9
Speed step-down via the control panel (low-medium-high).
Speed step-up via the remote control (low-medium-high).
Speed step-down via the remote control (low-medium-high).
Low speed activation via the remote control.
Medium speed activation via the remote control.
High speed activation via the remote control.
3
Supply air heating
The unit is equipped with a posistor electric heater for warming of supply air during cold seasons.
Heater activation/deactivation via the control panel.
press and
hold
press
Heater activation via the remote control.
Heater deactivation via the remote control.
WARNING!!! The unit continues operating within 30 seconds after turning o to ensure heat removal from the heating elements.
4
Timer
The timer ensures automatic changeover from a current operation mode into high speed mode and revert to the previous operation mode in set time
period. To activate/deactivate timer:
Via the control panel: press the button once to set the timer for 20 minutes, each subsequent pressing
prolongs the timer operation for 10 minutes, till maximum 60 minutes.
press and
hold
press
Timer deactivation via the control panel.
press and hold 3 sec
Timer activation using the remote control. The only available timer setting is 20 minutes.
Timer deactivation using the remote control: turn the unit o and restart it.
Table 2. Unit control and setup
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FRESHBOX E120
Function Button/Button combination Indication
ATTENTION! Changing the unit parameters results in loss of default settings for the fan power! ATTENTION! The fan power adjustment is possible via
the control panel only!
5
Fan speed adjustment
The fan power is adjusted during the fan speed setup mode. Changeover to the fan speed setup mode is possible only when the unit if OFF.
Changeover to the fan setup speed mode.
Indication of changeover to the fan
setup speed mode
Adjusted speed indication
press and hold press and hold
for 3 seconds
Adjusted speed selection
or
Supply fan power step-up and step-down. Each pressing increases/decreases the fan
power by 1%.
press and hold
press:
− stepping up
− stepping down
-
Current supply fan power indicator during set-up
Current supply fan power indicator
Supply fan adjustment indicator
when pressed
-
Extract fan power step-up/down. Each pressing increases/decreases the fan power by
1%.
press and hold
press:
− stepping up
− stepping down
-
Current extract fan power indicator during set-up.
Extract fan adjustment indicator
Supply fan adjustment indicator
when pressed
-
Exiting the fan speed setup mode.
-
Reset to the default settings. Enter the fan power adjustment mode. The default fan
speed settings:
Low speed - 40 m
3
/h, medium speed - 80 m3/h, high speed - 120 m3/h.
press and hold 3 sec
and
-
Table 2. Unit control and setup (continued)
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FRESHBOX E120
Function Button/Button combination Indication
6
Filter replacement indicator.
After 3000 operating hours the control panel display shows the warning lter cleaning or replacement indicator instead of the operating temperature to
communicate the need of lter cleaning or replacement. Clean or replace the lters and then reset the motor meter.
Filter replacement
indicator
-
Press the button on the control panel to turn the unit o and disconnect it from
power supply. Replace the lters as stated in the "Maintenance" section.
-
After the lter replacement connect the unit to power supply and press a
respective button on the control panel or on the remote control to activate the
unit.
or
-
Resetting motor hours
press synchronously
and
-
7 Date and time setting
Press a respective button on the control panel to deactivate the unit.
-
Changeover to the date and time setup mode
press and hold
press
-
Selection of the adjusted set point. The set point blinks during setup.
The date and time set points are displayed as follows:
1. Minutes; 2. Hours; 3. Week day; 4. Date; 5. Month; 6. Year.
when pressed
press
or
-
Setting of the set point
press
or
-
Exit the date and time setup mode
press
-
Table 2. Unit control and setup (continued)
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FRESHBOX E120
Function Button/Button combination Indication
8
Scheduled operation
Each week day has four entries that determine the time for switching the unit to a set fan speed as well as the time for the heater activation or deactivation.
The timer function always prevails over scheduled operation function. By default the scheduled operation is set for the warm season and the heater is
disabled. While adjusting the scheduled operation for the cold season set the heater ON parameter.
Activation of the scheduled operation mode via the control panel.
press and hold
press
Deactivation of the scheduled operation mode via the control panel.
press and hold
press
-
Activation of the scheduled operation mode via the remote control.
Deactivation of the scheduled operation mode from the remote control. -
For access to the scheduled operation mode settings turn the unit o by pressing the
respective button on the control panel or using the remote control.
or
-
Entering the scheduled operation setup mode using the control panel.
Week day
Time
Entry
number
Heater operation
status
Fan s
p
eed
Heater o
Heater on
press and hold press
-
Selection of the scheduled operation mode parameters. The set point blinks during
setup.
press and hold press
or
-
Setting the required set point.
Parameters for scheduled operation setup:
• Entry number - each week day has four entries.
• Week day - setting week day.
• Heater operation status - setting the heater operating status for a current entry.
• Fan speed - setting the fan speed for a current entry.
• Time - time setting for a current entry.
press
or
-
Entry copying for the next day.
ATTENTION! The Sunday parameters may not be copied for Monday.
press and hold
press
-
Exiting the scheduled operation setup mode using the control panel or the remote
control.
or
-
Table 2. Unit control and setup (continued)
Week day
Entry number
1234
Start time Speed
Heater
operation
status
Start time Speed
Heater
operation
status
Start time Speed
Heater
operation
status й
Start time Speed
Heater
operation
status
Mo. 07:00 2 O 08:00 1 O 17:00 2 O 22:00 1 O
Tu. 07:00 2 O 08:00 1 O 17:00 2 O 22:00 1 O
We. 07:00 2 O 08:00 1 O 17:00 2 O 22:00 1 O
Th. 07:00 2 O 08:00 1 O 17:00 2 O 22:00 1 O
Fr. 07:00 2 O 08:00 1 O 17:00 2 O 22:00 1 O
Sa. 10:00 2 O 12:00 2 O 17:00 2 O 23:00 1 O
Su. 10:00 2 O 12:00 2 O 17:00 2 O 23:00 1 O
Table 3. Scheduled operation programming example
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FRESHBOX E120
TECHNICAL MAINTENANCE
Regular technical supervision and maintenance of the unit are required to
ensure the product long service life and non-stop operation.
Disconnect the unit from power mains prior to any maintenance
operations.
Warning! Consider the unit sharp edges! Ful l maintenance
operations in work gloves!
QF
!
WARNING!
Cut power supply to the unit o by turning the automatic electric switch QF to OFF position prior to any
maintenance operations.
Take steps to prevent re-activation of the automatic switch.
Ful l the unit maintenance 3-4 times per year.
The unit technical maintenance includes regular cleaning and other works:
1. Filter maintenance (3-4 times per year).
Dirty lters increase air resistance and decrease supply air. Clean the lter
with a vacuum cleaner or ush it with water. After two consecutive cleanings
the lter must be replaced. Install dry lters only! Contact a local distributor
for the lters stated above in the section «Technical data».
Dirty lters are not considered as a warranty case! Replace
immediately humid and mouldy lters!
Filter removing as follows:
Make sure the unit is disconnected from power mains.
QF
Open the unit panel.
Remove the supply lter located above the heat exchanger.
Pull the band to remove the heat exchanger from the unit.
Remove the extract lter.
Perform the actions in the reverse order after lter maintenance.
2. Heat exchanger maintenance (once per year).
The heat exchanger must be regularly cleaned to maintain high heat
recovery e ciency even in case of the regular lter cleaning. Clean it with warm
detergent solution. Remove the heat exchanger from the unit and ush it with
warm detergent solution. Install the dry heat exchanger back to the unit.
To remove the heat exchanger:
Make sure the unit is disconnected from power mains.
QF
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FRESHBOX E120
Open the unit panel.
Remove the supply lter located above the heat exchanger.
Pull the band to remove the heat exchanger from the unit.
Perform the actions in the reverse order after completion of the heat
recovery maintenance.
3. Fan maintenance (once per year).
The regular lter cleaning may not completely prevent the dust ingress
into the unit, which results in the unit capacity decrease. Clean the fan with a
soft cloth or a brush. Cleaning with water, abrasive detergents, sharp object or
chemicals is not allowed.
4. Condensate removal (once per year).
Some condensate may collect in the drain pan during heat recovery. As
the drain pan gets lled with condensate, the control panel display shows
the indicator
, that communicates the full drain pan status and the need
to remove condensate.
Condensate removal:
Make sure the unit is disconnected from power mains.
QF
Open the unit panel.
Lift up the condensate level switch.
Hold the condensate level switch and pull carefully the condensate
drain pan.
Empty the drain pan and re-install it back. Lift up the condensate level
switch prior to its installation.
5. Outer ventilation hood (supply grille) maintenance (twice per year).
Check the outer hood (supply grille) condition and remove foreign objects
to maintain free air intake.
6. Air ducts maintenance (once in 5 years).
The regular unit maintenance in compliance with the above rules may
not completely prevent dust ingress into the air ducts which may result in
air ow decrease. The air duct maintenance consist in periodical cleaning or
replacement.
7. Outer ventilation hood (exhaust grille) maintenance (as required).
Check the outer hood (exhaust grille) condition and remove foreign
objects to maintain free air exhaust.
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FRESHBOX E120
TROUBLESHOOTING AND FAULT HANDLING
In case of alarm the unit is turned o and the display shows the alarm indicators, Fig. 11. The possible alarms are listed in the table 4. The alarms must be removed
ONLY in a service centre or by a service expert, duly authorized for unassisted operations at the units up to 1000 V after careful reading of the operation manual.
Freeze protection sensor drop-o
Condensate drain pan is full
Temperature sensor failure
ALARM INDICATION REMEDY
Temperature sensor failure
Short circuit of one or two temperature sensors. Contact the unit seller for
troubleshooting of a short circuit.
Freeze protection sensor dropping o
Contact the unit seller for troubleshooting of dropping o of the freeze protection
sensor.
Condensate drain pan is full Follow the steps described in the Maintenance.
Fig. 11. Alarm indication on the control panel
Table 4. Unit alarm list
Fault Possible reason Troubleshooting
The fan does not start
when the unit is on
No power supply or wrong connection to power mains.
Connect the unit to power mains. Troubleshoot the connection
error.
Jammed motor, soiled impeller blades. Remove the motor jam, clean the impeller blades.
Automatic switch
tripping
Short circuit in power grid. Turn the unit o and contact the seller for troubleshooting.
Low air ow
Too low set speed. Set higher speed.
The lters and the fans are soiled, the heat exchanger is soiled. Clean or replace the lters, fans and heat exchanger.
The supply and extract grilles, air ducts, the outer hood are
closed or soiled.
Remove and clean the ventilation system components to
ensure free air ow.
Low supply air
temperature
The extract lter is soiled. Clean or replace the extract lter.
The heat exchanger is frozen.
Check the heat exchanger condition. Shutdown the unit if
required and turn it on after the freezing danger is no longer
imminent.
The electric heater is defective. Contact the unit Seller.
Noise, vibration
The impeller is soiled. Clean the impeller.
The screw connection is loose. Tighten the screws.
Condensate out ow The condensate limit switch is defective. Contact the unit Seller.
Table 5. Alarm list and troubleshooting
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FRESHBOX E120
Single-room heat recovery air handling unit
FRESHBOX E120
is recognizes as serviceable.
The unit complies with the requirements according to the EU norms and directives, to the relevant EU-Low Voltage Equipment Directives, EU-Directives
on Electromagnetic Compatibility.
We hereby declare that the following product complies with the essential protection requirements of Electromagnetic Council Directive 2004/108/EC, 89/336/
EEC and Low Voltage Directive 2006/95/EC, 73/23/EEC and CE-marking Directive 93/68/EEC on the approximation of the laws of the Member States relating to
electromagnetic compatibility.
This certi cate is issued following test carried out on samples of the product referred to above.
Approval mark Manufacturing date ____________________
Company:
Name:
Date Signature
Single-room heat recovery air handling unit
FRESHBOX E120
is connected to power mains in compliance with the operation manual requirements by the professional:
SELLER
SALES DATE
REPRESENTATIVE IN EU
BLAUBERG Ventilatoren GmbH
Aidenbachstr. 52a,
D-81379 Munich,
Germany
ACCEPTANCE CERTIFICATE
CONNECTION CERTIFICATE
WARRANTY CARD
FRESHBOX E120
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FRESHBOX E120
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NOTES
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FRESHBOX E120 v.1(5) / 10-2014 / EN
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