RadonTec ALPHAEX 150 User manual

RADONTEC ALPHAEX
150 / 200 / 250
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 –RadonTec AlphaEx 150/ 200/ 250
Scope of contents
1 Introdcution......................................................................5
2 Technical Data ..................................................................9
3 Scope of delivery ............................................................10
4 Product features.............................................................10
5 Dimensions.....................................................................12
6 Bestimmungsgemäße Verwendung ...............................13
6.1 Intended use...........................................................13
6.2 Non-permitted use.................................................14
7 Ambient conditions ........................................................15
8 Safety notes....................................................................15
9 Assembly and electrical connection...............................18
9.1 Fan installation .......................................................19
9.2 Electrical connection ..............................................21
9.3 Operation with speed controller............................26
9.4 Operation with transformer...................................26
9.5 Commissioning .......................................................27
10 Maintenance...............................................................28
11 Troubleshooting .........................................................30
12 Transport and Storage................................................32
13 Disassembly and disposal...........................................33
14 Circuit diagrams..........................................................34
15 Two-year warranty .....................................................36

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Manual –RadonTec AlphaEx 150/ 200/ 250
16 Support and Contact ..................................................37
16.1 Troubleshooting/FAQ.............................................37
16.2 Contact Us ..............................................................37

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Manual –RadonTec AlphaEx 150/ 200/ 250
1 Introdcution
The RADONTEC ALPHAEX was developed for the underfloor
extraction of radon gas. With a drainage underneath the
foundation, radon-containing soil air is extracted over a wide
area and conducted outside by negative pressure. With a so-
called radon well in or near the house, the radon-containing
soil air is extracted selectively and thus kept away from the
walls of the house that are in contact with the soil. This
prevents the radon from entering the building.
The placement of the RADONTEC ALPHAEX outside the
building can be freely chosen.
The RADONTEC ALPHAEX is suitable for permanent outdoor
use (IP X4 - protection against splash water from all sides and
a temperature range of -25 °C to +50°C ).
The built-in radial motor is extremely robust and designed
for a long service life.

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Manual –RadonTec AlphaEx 150/ 200/ 250
Application example 1: Point radon extraction with
discharge at floor level.

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Manual –RadonTec AlphaEx 150/ 200/ 250
Application example 2: Point radon extraction under the
floor slab with discharge above the roof.

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Manual –RadonTec AlphaEx 150/ 200/ 250
Application example 3: Extraction of radon soil air via an
external radon well.

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Manual –RadonTec AlphaEx 150/ 200/ 250
2 Technical Data
Impeller type
radial
Speed controllable
yes
Voltage type
Alternating current
Rated voltage
1~ 220-240 V
Mains frequency
50 Hz
Protection class
IP X4
Installation location
Roof
Mounting position
vertical
Material
Powder-coated steel
Fluid temperature at IMax
-25 °C to 50 °C
Sound pressure level
48 dB(A) (distance 3 m, free
field conditions)

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Manual –RadonTec AlphaEx 150/ 200/ 250
The RADONTEC ALPHAEX radon aspirator is available in
different versions, each of which differs in the pipe diameter
and the resulting performance and air volumes.
EX 150
EX 200
EX 250
Nominal width
150 mm
200 mm
250 mm
Nominal power
98 W
154 W
194 W
IMax
0,43 A
0,67 A
0,85 A
Delivery volume
555 m³/h
950 m³/h
1310 m³/h
Weight
7,2 kg
8,1 kg
10,1 kg
3 Scope of delivery
•RADONTEC ALPHAEX radon aspirator is supplied with
square roof base. The roof base can be removed for
direct pipe mounting.
•Assembly and operating instructions
4 Product features
•Units for radon extraction, horizontal discharge
•Speed controllable
•High pressure capacity and delivery volume
•Unit is switched on or off with a switch to be provided by
the customer
•Radial impeller with backward curved blades
•AC version, with capacitor motor (operating capacitor
ready for connection in terminal box).

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Manual –RadonTec AlphaEx 150/ 200/ 250
Thermal overload protection
The fan motor is thermally protected (temperature
sensor in the motor winding). The overload
protection automatically switches off the fan in case
of overheating.
Before restarting, the fan must remain switched off
until the motor and temperature limiter have cooled
down. Depending on the size and temperature
conditions, the cooling time can be up to 30 minutes.
Do not switch on the unit until this time has elapsed.

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Manual –RadonTec AlphaEx 150/ 200/ 250
5 Dimensions
Depending on the nominal width, the variants of the
RADONTEC ALPHAEX have different dimensions.
Dimensions, mm
Weight,
kg
D
D1
H
L
L1
EX 150
149
400
230
440
330
7,2
EX 200
198
400
250
440
330
8,1
EX 250
248
400
249
590
450
10,1

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Manual –RadonTec AlphaEx 150/ 200/ 250
6 Bestimmungsgemäße Verwendung
6.1 Intended use
The RADONTEC ALPHAEX fans are suitable for the following
applications:
● RADONTEC ALPHAEX fans are suitable for both private and
public/commercial use.
● These fans are used for the extraction/venting of soil air
containing radon under buildings.
● Extraction of radon drainage systems.
● Connection to indoor radon extraction points (fan must
always be placed outside the building).
● Connection to radon wells
● Connection to perimeter drainage systems (Caution: These
must be dry. It must be ensured that no water can be
sucked in).
● Permissible places of use are roofs (flat, pitched,
corrugated or trapezoidal roofs), ceilings or consoles with
sufficient load-bearing capacity. As well as installation
close to the ground.
● A fixed installation with permanently installed electrical
supply cable is mandatory:
- With roof base only on a suitable substructure.

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Manual –RadonTec AlphaEx 150/ 200/ 250
- Without roof base directly on the vent pipe.
The fan is suitable for vertical mounting on the exhaust air
ventilation shaft and may only be used for exhaust air
ventilation.
● When connecting to pipes, transitions with elastic
connecting pieces are recommended. These prevent
vibration transmission to the pipe system.
● In the case of free intake (near the floor), operation is only
permitted with contact protection in accordance with EN
ISO 13857. We offer the matching protective grille for this
as an option. (Must be purchased separately).
6.2 Non-permitted use
RadonTec is not liable for damage caused by improper use. Do
not use the unit under any circumstances:
● to convey air that is saturated with water vapour or
contains grease
● in conjunction with an extractor hood
● for conveying dust particles, solids, sticky substances and
dfibrous materials that may adhere to the fan
● in the vicinity of flammable materials, liquids or gases
● for conveying chemicals, aggressive gases or vapours
● in explosive atmospheres

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Manual –RadonTec AlphaEx 150/ 200/ 250
● if there is no protection against contact with the impeller
in accordance with EN ISO 13857 for free intake (near the
floor)
7 Ambient conditions
Maximum permissible temperature of the pumped medium +
50 °C, depending on the unit variant.
When operating with room air-dependent fireplaces, sufficient
supply air must be provided. The maximum permissible
pressure difference per living unit is 4 Pa.
8 Safety notes
Read these installation and operating instructions
carefully before using the fan for the first time.
Follow the instructions.
Keep these instructions in a safe place for later use.
Installation may only be carried out by skilled
personnel with knowledge of ventilation
technology.
The electrical connection may only be carried out
by qualified electricians. These have electrical
engineering training and knowledge of the dangers
and effects that can result from an electric shock.
The installation personnel must be height- and
foot-safe.

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Manual –RadonTec AlphaEx 150/ 200/ 250
When working on the roof, sufficient safety
precautions must be taken to protect the
installation personnel.
The degree of protection specified on the type plate
is only guaranteed if the unit is installed as intended
and the cables are properly inserted into the
terminal box.
Only connect the unit to a permanently installed
electrical installation with cables of type NYM-O or
NYM-J (3x 1.5 mm² or 5x 1.5 mm²). In addition, a
device for disconnecting from the mains with at
least 3 mm contact opening per pole must be fitted.
Only operate the unit with the voltage and
frequency specified on the type plate.
It is essential to fit a repair switch at the installation
site so that all poles of the unit can be disconnected
from the mains on site during cleaning,
maintenance or repair work. It must be possible to
secure the repair switch against being switched on
again.
Only operate the unit when it is completely
assembled.
A sufficient supply air flow must be ensured.
Modifications and conversions to the unit are not
permitted and release the manufacturer from any
warranty and liability.

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Manual –RadonTec AlphaEx 150/ 200/ 250
Never operate the unit without a protective grille
in the case of free intake (near the floor). Secure
the unit and piping against foreign bodies being
sucked in. Risk of injury from objects in the
impeller. Do not insert any objects into the unit.
Risk of injury from rotating impeller. Do not get too
close to the appliance so that hair, clothing or
jewellery cannot be pulled into the appliance.
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.
Children must not play with the appliance.
Cleaning and user maintenance must not be carried
out by children without supervision.
If the unit is installed close to the floor, it is
recommended that the fan be installed at a
minimum height of 2 metres. This can reduce wilful
damage, tampering or the risk of injury to children
or animals.

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Manual –RadonTec AlphaEx 150/ 200/ 250
9 Assembly and electrical connection
Cutting injuries due to sharp-edged housing plates.
Wear protective gloves.
Notes
● The fan is designed for installation on a roof directly
above a ventilation shaft or ventilation pipe.
● Observe the permissible roof load.
● Install ventilation ducts properly.
● Lay the mains cable firmly to the installation site.
● It is essential to observe the relevant regulations for
electrical installation and device mounting, in Germany
in particular DIN VDE 0100 with the corresponding parts.
● To avoid vibration transmission to the pipe system, use
elastic fastening collars (type ELR).
● To avoid leakage, only screw the roof base onto a
suitable, level substructure. For direct mounting of the
RADONTEC ALPHAEX on the ventilation duct, dismantle
the roof base (3 self-tapping screws).
● Use suitable insulation, soundproofing and installation
material between the unit and the roof base.
● The fan can be mounted on a roof box to prevent snow
and water from entering a ventilation pipe.

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Manual –RadonTec AlphaEx 150/ 200/ 250
● Connection of the fan to the ventilation pipe is made with
an intake flange fixed directly to the bottom of the fan.
The bottom of the fan has the fixing holes for the screws to
connect the fan to a flat surface or to the roof box.
● The roof box, intake flange and fixing screws are not
included in the delivery and must be purchased
separately.
● Power is supplied through an external junction box or one
integrated in the housing.
● The fan belongs to Class I electrical installations and it
must be earthed. The terminal must be connected to the
earthing circuit.
9.1 Fan installation
Risk of injury in case of wrong mounting location or
insufficient fastening with the roof or the piping.
1. Unit only to be mounted at locations with sufficient load-
bearing capacity.
2. Only mount the unit at locations with sufficient load-
bearing capacity.
3. Sufficiently dimensioned fastening material must be
provided by the customer (screws with Ø 10 mm, min.
strength class 8.8). Screw the unit tightly to the roof, roof
base or pipework.

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Manual –RadonTec AlphaEx 150/ 200/ 250
Cutting injuries due to sharp-edged housing plates.
Put on protective gloves.
Leakage due to insufficient sealing.
1. Screw the unit tightly with all screws.
2. Attach suitable insulation, sound insulation and
installation material.
Installation on the roof or roof plinth
1.
2.
3.