Mohlenhoff AR 2010 S2, AR 4010 S2, AR 2010 K2, AR 4110 K2, AR 4010 K2 Technical Information
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Technical Information
AR 4010 S2
AC 24V/1A
1025
Alpha-Thermostat
Alpha-Thermostat Standard
AR 20.. S2 (230 V) | AR 40.. S2 (24 V)
The Alpha-Thermostat Standard is a digital room thermostat for
the control of surface heating systems with thermal actuators
(e. g. OEM actuator: A 2004 / A 4004).
This thermostat is equipped with microprocessor technology; it
shows excellent PI controlling behaviour with increased regulating
comfort for the user.
It must be mounted to the pre-installed Alpha Mounting Base
AS 1000, onto which it can be plugged at any time and to which
it must be electrically connected. In order to avoid damage to
this valuable thermostat during the construction phase, the
system base is not included in the scope of delivery; it can be
ordered already in advance for the necessary electric installation.
Features
l Precise control response
l Antifreeze function 5 °C
l Valve protection function
l Overcharge protection
l Designs normally closed (NC) and normally open (NO)
l Temperature setback 2 K (fixed)
l Limitation of set room temperature
l Just-in-time installation concept
l Simple screwed connection technology in the Alpha Mounting
Base
l Functional design
l 12 housing colours available
Application
l Individual room control, specially designed in connection with
surface, radiator and convector heating systems.
General information
Type
AR 2010 S2: Version 230 V normally closed (pure white)
AR 4010 S2: Version 24 V normally closed (pure white)
Scope of delivery (Standard)
Version: Alpha-Thermostat Standard 230 V / 24 V normally closed:
1 x AR 2010 S2 or AR 4010 S2
1 x Installation instruction
Alternative design:
AR 2110 S2: Version 230 V normally open (pure white)
AR 4110 S2: Version 24 V normally open (pure white)
Housing colour on request
Accessories
Alpha Mounting Base AS 1000
Mikrocontroller Technology
Functions
The Alpha-Thermostat 20../40.. S2 is a PI thermostat for the control
of thermoelectric actuators (e. g. OEM actuator). The output voltage
is switched on or off depending on the difference between the room
temperature measured by the thermostat (actual value) and the
desired temperature (set value). The bigger the difference is between
set value and actual value, the longer are the switching cycles. When
the room temperature approaches the set temperature, the switching
cycles of the output voltage are reduced and find their balance at
an almost constant value corresponding to the heating power for
this room.
Valve protection function (only NC)
If an actuator is not triggered during more than 24 hours of normal
operation, the electronic system switches the actuator for 6 minutes
once every 24 hours. This prevents the thermostat valves from clogging
outside the heating season.
Antifreeze protection
If the set value element of the Alpha-Thermostat is set to the right
stop (symbol
), a room temperature of 5 °C is set as target value in
order to prevent the installation from freezing.
Overcharge protection
The switching output of all Alpha-Thermostats with microprocessor
technology is protected by an internal temperature monitoring system
in order to prevent the system from overcharge damage. In case of
an internal temperature rise due to overcharge the electronic system
automatically disconnects the output until the inside temperature
has dropped again to normal values.
Control panel
Room thermostats
Connection recommendations
-OEM actuator NC A 2004 / NC A 4004
NO A 2104 / NO A 4104
-OEM base without pump control: B 2012 / B 4012
with pump control: B 2022 / B4022
Customer-specific version:
Customer-specific versions are available on request
Ordering information
Our staff will be glad to assist you in finding the Alpha-Thermostat
fitting your application.
Call us under: +49 (0) 53 41 - 84 75 - 0
1.
2.
OPEN
CLOSE
T 1A
Lock (for locking the thermostat on
the mounting base)
Technical Information
Alpha-Thermostat
Technical data
Type AR 20.. S2 AR 40.. S2
Version Standard
Contact rating max 5 OEM actuators 230 V
Operating voltage 230 V +/- 10%, 50 Hz
Switched current 0,2 A (ohmic load)
Control range (heating zone) 10 to 28°C
Temperatur setback (heating zone) 2 K (fixed)
Hunting approx. 0,2 K
Room thermostats
Valve interval switching if output is inactive for 24 h, once a day
Antifreeze protection on position * 5°C
Storage temperature -25 to +70 °C
Ambient temperature 0 to +50 °C
Relative humidity max. 80%1)
Dregree/ / class of protection IP 30 / II
CE conformity according to EN 60730
Housing ABS
Number of housing colours 12
Weight 49 g without Alpha Mounting Base
Planning and installation notes
Standard
max 5 OEM acuators 24 V
24 V, (19,2 - 35 V) 50/60 Hz
1 A (ohmic load)
10 to 28°C
2 K (fixed)
approx. 0,2 K
5°C
-25 to +70 °C
0 to +50 °C
max. 80%1)
IP 30 / III
EN 60730
ABS
12
49 g without Alpha Mounting Base
80 mm
2)
27 mm
84 mm
1)
not condensing
2)
with Alpha Mounting Base + 8,5 mm
Installation note
Installation and electric connection are only possible using the system
base AS 1000. The system base is not included in the scope of supply
and must be ordered separately; it fits all wired types of the AlphaThermostat scope.
1.
2.
Installation can be performed directly to the wall or on a flush-type
box. A 5-wire line (5 x 1.5 NYM) is recommended for the electric
connection.
Recommended place of installation
ca. 30cm
ca.150cm
Note!
In order to ensure a trouble-free
and thus optimum control
operation, a room thermostat
should be installed behind the
door in a quiet zone - free from
environment influence as
draught, humidity, direct sunlight
exposure or other sources of
heat; furthermore, it should not
be covered by curtains.
Otherwise it may occur that
the set room temperature is
exceeded or not achieved,
depending on the respective
environment influence.
Electric installation
230 V AC
230 V AC / 0,2 A
24 V AC / 1 A
Alpha-Thermostat
AR 20..S2 /
AR 40..S2
ohmic load
ohmic load
24V
24V
230V
230V
Timeswitch
max. 5 OEM actuators
A 2004 / A 4004
Only necessary for "automatic
temperature setback"
24 V AC
LN
L1L2
Diagram for automatic temperature setback
with central time-switch
Möhlenhoff Wärmetechnik GmbH
Museumstraße 54a
38229 Salzgitter - Germany
Telephone +49 (0) 53 41· 8475-0
Fax +49 (0) 5341 ·8475-99
Alpha-Thermostat
AR 20..S2 /
AR 40..S2
Alpha-Thermostat
AR 20..S2 /
AR 40..S2
230V
24V
24V
230V
230V
24V
24V
230V
max. 5 OEM actuators
A 2004 / A 4004
Timeswitch
max. 5 OEM actuators
A 2004 / A 4004
further Alpha-Thermostats
230 V AC
24 V AC
LN
L1L2
Diagram for automatic temperature setback
with central time-switch
E-Mail: contact@moehlenhoff.de
Internet: www.moehlenhoff.de
Alpha-Thermostat
AR 20..S2 /
AR 40..S2
Alpha-Thermostat
AR 20..S2 /
AR 40..S2
230V
24V
24V
230V
230V
24V
24V
230V
max. 5 OEM actuators
A 2004 / A 4004
max. 5 OEM actuators
A 2004 / A 4004
further Alpha-Thermostats
230 V AC
24 V AC
LN
L1L2
Diagram for automatic temperature setback
with Alpha-Thermostat Control
Technical changes reserved.
8-D58-40-386. Reprint, in whole or in part, is only admissible with our approval.
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