RadonTec AlphaFreshbox 60 User manual

AlphaFreshbox 60
Manual
February 2021

RadonTec GmbH
Hauptstraße 5
89426 Wittislingen - Germany
Tel: (+49) 9076 - 919 98 35
E-Mail: [email protected]
Website: radontec.de
Shop: radonshop.com
Version: 01

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Manual –AlphaFreshbox 60
Scope of contents
1 Introduction......................................................................4
2 Safety notes......................................................................4
2.1 Unit mounting safety precautions............................5
2.2 Unit operating safety precautions............................7
3 Intended use...................................................................10
4 Scope of delivery ............................................................11
5 Technical data.................................................................12
6 Dimensions.....................................................................13
7 Design and operating logic.............................................14
8 Mounting and operating ................................................16
8.1 Mounting................................................................16
8.2 Speed switch...........................................................23
8.3 Operating................................................................27
9 Maintenance...................................................................28
10 Troubleshooting .........................................................29
11 Transport and storage................................................31
12 Disposal ......................................................................32
13 Two-year warranty .....................................................32
14 Support and Contact ..................................................33
14.1 Troubleshooting/FAQ.............................................33
14.2 Contact Us ..............................................................33

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Manual –AlphaFreshbox 60
1 Introduction
The single-room unit is designed for efficient energy saving
supply and exhaust ventilation of flats, houses, cottages and
other small premises.
2 Safety notes
Read the user’s manual carefully prior to the
operation and installation of the single-room heat
recovery unit, hereinafter the unit.
Read the manual carefully and keep it as long as
you use the unit.
While transferring the unit control the user’s manual must be
turned over to the receiving operator.
Installation and operation of the unit shall be
performed in accordance with the present user’s
manual as well as the provisions of all the applicable
local and national construction, electrical and
technical codes and standards.
The warnings contained in the present user’s manual
must be considered most seriously since they contain
vital personal safety information.
Failure to follow the safety regulations may result in
an injury or unit damage.

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Manual –AlphaFreshbox 60
2.1 Unit mounting safety precautions
The unit must be disconnected from the
power supply prior to every installation
or repair operation.
The unit must be grounded!
The unit must not be operated outside
the temperature range stated in the
user's manual or in aggressive or
explosive environments.
Do not use damaged equipment or
conductors to connect the unit to power
mains.
While installing the unit follow the safety
regulations specific to the use of electric
tools.
Unpack the unit with care.

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Manual –AlphaFreshbox 60
Do not change the power cord length at
your own discretion. Do not bend the
power cord. Avoid damaging the power
cord.
Do not position any heating devices or
other equipment in close proximity to
the unit power cord.
All mounting and servicing operations
are allowed for duly qualified electricians
with valid electrical work permit for
electric operations at the units up to
1000 V after careful study of the present
user's manual.
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.
Take measures to prevent contact with the fan to avoid
physical damages during the unit test and start-up.
Misuse of the product or any unauthorized modification are
not allowed.
Take steps to prevent ingress of smoke, carbon monoxide and
other combustion products into the room through open
chimney flues or other fire-protection devices. Sufficient air
supply must be provided for proper combustion and exhaust
of gases through the chimney of fuel burning equipment to

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Manual –AlphaFreshbox 60
prevent back drafting. The maximum permitted pressure
difference per living units is 4 Pa.
The transported air must not have an aggressive effect on steel
at the temperature stated in the table 1 of the section
“Technical data”.
2.2 Unit operating safety precautions
Do not touch the controller or the
remote control with wet hands. Do not
carry out the unit maintenance with
wet hands.
Do not wash the unit with water.
Protect the unit electric parts from
water ingress.
Use the unit only as intended by the
manufacturer. Do not connect clothes
dryers or similar equipment to the unit
or the ventilation system!
Do not put any containers with water,
for example vases on the unit.

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Manual –AlphaFreshbox 60
Do not sit on the unit and do not put
any objects on it.
All operations related to the unit
electrical connections, servicing and
repair works are allowed only after the
unit is disconnected from power mains.
Do not let children operate the unit.
Do not damage the power cable while
operating the unit. Do not put any
objects on the power cable.
Keep explosive and inflammable
products away of the unit.
Do not open the operating unit.

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Manual –AlphaFreshbox 60
In case of unusual sounds, smoke
disconnect the unit from power supply
and contact the service centre.
In case of long lasting operation of the
unit check the mounting reliability
periodically.
Do not close or block the unit intake or
exhaust vent not to disturb the normal
air passage.
Do not let air flow from the unit be
directed to the open flame devices or
candles.
The unit is not intended to be used by children,
physically or mentally disabled persons, persons with
sensory disorder, persons with no appropriate
qualification.
Installation and connection operations must be
performed only by properly qualified personnel after
the appropriate safety briefing.
The unit installation place must prevent access by
unattended children.

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Manual –AlphaFreshbox 60
3 Intended use
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.
The single-room heat recovery air handling unit is an energy
saving appliance based on heat recovery technology. It is one
of the energy saving components used in buildings and
premises. The unit is a component part of a ventilation system
and is not designed for stand-alone operation.
The unit is designed to arrange permanent controllable air
exchange in flats, cottages, hotels, cafes and other domestic
and public premises. The filtered air is warmed up by means of
the recovered extract air heat energy.
The unit is designed for wall surface mounting. The unit is rated
for continuous operation.
The unit is designed for connection to AC single-phase power
mains, see "Technical Data". The unit is rated for permanent
operation during non-stop power supply.
The unit is designed for indoor application with the ambient
temperature ranging from +1 °C up to +40 °C and relative
humidity up to 80%.
The transported air temperature must be from -20 °C up to
+50° C. The unit is classified as a class I electric appliance.
Transported air must not contain any flammable or explosive
mixtures, evaporation of chemicals, coarse dust, soot and oil

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Manual –AlphaFreshbox 60
particles, sticky substances, fibrous materials, pathogens or
any other harmful substances.
Ingress Protection (IP) rating from solid objects and liquids: IP
44 for the unit motors;
IP 22 for the assembled unit integrated into air ductworks.
The unit design is regularly improved, so some models may
slightly differ from those ones described in this manual.
4 Scope of delivery
Please check the completeness of the scope of delivery using
the following parts list:
1x AlphaFreshbox 60 ventilation unit
1x Sensor speed switch
1x Power cable
2x Screw 5.0x50
6x Dowel 8x40
1x Operation manual
1x Master plate
1x Speed Switch

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Manual –AlphaFreshbox 60
Mounting kit:
2x Plastic ventilation pipe Ø 125 mm, 500 mm long
1x Paper template
1x External ventilation bonnet
5 Technical data
Unit voltage
100-240 V
Frequency
50-60 Hz
Speed
min
med
max
Power
4.2 W
9.6 W
15.4 W
Current
0.02 A
0.04 A
0.07 A
Max. air flow
30 m³/h
45 m³/h
60 m³/h
RPM
1165
1720
2685
Sound pressure level at 3 m
distance
22 dBA
25 dBA
29 dBA
Max. medium temperature
-20° C up to +50° C
Filter: extract/supply
G2
Heat recovery efficiency
79 %
74 %
70 %

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Manual –AlphaFreshbox 60
Heat exchanger type
counter-flow
Heat exchanger material
polystyrene
Ingress Protection Rating
IP22
6 Dimensions
Weight: 10.3 kg

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Manual –AlphaFreshbox 60
7 Design and operating logic
The unit casing is made of painted steel, internally filled with a
layer of heat- and sound-insulating material.
The unit casing incorporates a plate heat exchanger, a supply
and an extract fan.
The front panel is installed on the rotating sleeves to enable
quick access for the unit servicing.
The casing bottom is equipped with a protecting service panel
to enable service access to the automation unit.
The G4 supply filter is installed between the fan and the heat
exchanger to provide supply of filtered air to the room. The G4
extract filter is installed in the upper part of the front panel.
The temperature sensor downstream of the heat exchanger in
the exhaust air duct provides the heat exchanger freezing
protection. If the exhaust air temperature drops down below
+3 ºC the heat exchanger

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Manual –AlphaFreshbox 60
freezing danger is registered. In this case the supply fan is
turned off and the unitoperates in the extract mode only. After
the heat exchanger is warmed up and the freezing danger is no
longer imminent the unit reverts to the standard operation
mode.
Warm stale extract air from the room flows through the air
ducts to the unit, is purified in the extract filter, then it is
moved to the heat exchanger and exhausted outside by the
extract fan. Clean cold air from outside is moved by supply fans
to the unit where it is purified through the supply filter. Then
clean air flows through the heat exchanger and is supplied to
the room.
Heat energy contained in the warm extract air is transferred to
the fresh intake inside of the heat exchanger. Heat recovery
minimizes heat energy losses and operating heating costs.

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Manual –AlphaFreshbox 60
8 Mounting and operating
8.1 Mounting
The unit mounting is carried out with the master plate from
the delivery set and two air ducts of required length.
Paper master plate for hole marking
The MK-Freshbox 60 mounting kit is specially designed for
installing the unit in a finished room. It contains two plastic air
ducts with a length of 500 mm, a master plate for marking drill

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Manual –AlphaFreshbox 60
holes and an outer ventilation bonnet that prevents foreign
bodies from entering the interior of the unit.
The MK-Freshbox 60 mounting set includes:
2x plastic air duct Ø 125 mm (Ø 5’’), 500 mm (19
11/16’’) long
1x paper master plate
1x outer ventilation hood
4x 8x40 screw and dowel
If the building’s wall thickness is above 500 mm
prepare two extra Ø 125 mm air ducts of required
length.
The set is optionally included in the scope of delivery.

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Manual –AlphaFreshbox 60
The AlphaFreshbox 60 is mounted as follows:
1. Fix the master plate from the delivery set on the wall with
a sealing tape on a required level.
2. Use a master plate to mark two Ø 130 mm holes for the
air ducts and two Ø 8 mm holes for the dowels.
3. Remove the master plate and drill through holes for the
air ducts and the 60 mm deep holes for the dowels. Drill
the holes for the air ducts sloped down by 2-3°. Then
insert the dowels (included into delivery set) into
respective holes.

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Manual –AlphaFreshbox 60
4. Re-install the masterplate with a sealing tape back. Fix the
master plate from the MK-Freshbox 60 mounting kit on
outer wall side to align the air ducts with respect to each
other. Fix the master plate from the mounting kit
somewhat lower to ensure the minimum required slope
3°. Before mounting the master plate press the perforated
holes to remove the master plate fragments and prepare
holes for the air ducts.
5. Insert the air ducts inside the holes in the master plate
designed for the air ducts and seal those with a mounting
foam through the holes in the master plate. Install the air
ducts sloped down by 2-3° to ensure the condensate
drainage from the unit.
6. After the mounting foam gets hard (see the solidification
time in the product specification) remove the master
plate and cut off the protruding parts of the air ducts to
be flush with the inner wall. On outer wall side, the air
ducts must protrude for 10 mm to prevent condensate
dropping on the wall.

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Manual –AlphaFreshbox 60
7. Unit installation sequence:
Open the front panel and remove the heat exchanger.
Connect the unit spigots to the plastic air ducts.
Fix the unit to the wall with the screws 5,0x50 from the
delivery set by inserting those to the Ø8 mm holes.
Install the heat exchanger and close the front panel.
Install the outer ventilation hood on outer side of the
building to prevent ingress of large foreign objects into
the air ducts.