Mohlenhoff Alpha Thermostat AR 2010 C2 Manual

Room thermostats
Technical Information
Alpha-Thermostat
Alpha-Thermostat Control
AR 20.. C2 (230 V) | AR 40.. C2 (24 V)
The Alpha-Thermostat Control is a digital room thermostat for
the control of surface heating systems with thermal actuators
(e. g. OEM actuator: A 004 / A 4004).
This thermostat is equipped with microprocessor technology; it
shows excellent PI controlling behaviour with increased regulating
comfort for the user. Temperature pre-selection is in 1/4 degree
steps. The selector switch (switching ball) allows the setting of
the desired operating mode (DAY, NIGHT or AUTOMATIC). The
plug-in digital clock can be removed for programming.
The thermostat 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.
Functions
Features
lPrecise control response
lAntifreeze function 5 °C
lValve protection function
lOvercharge protection
lDesigns normally closed (NC) and normally open (NO)
lOperating mode selector switch
lAdjustment of temperature setback -6 K
lLimitation of set room temperature
lIlluminated "Moon" symbol for temperature setback
lJust-in-time installation concept
lSimple screwed connection technology in the Alpha System Base
lFunctional design
l1 housing colours available
Control functions
lDigital timer Control for manual programming
lDay and week programming
l7 days power reserve
l1 channel with 4 memory locations ( 1 ON and 1 OFF switching
times).
lFree block formation and summer time conversion
The Alpha-Thermostat 0../40.. C 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.
Selector s itch
The desired operating mode can be selected with the selector switch.
The operating modes Normal (sun symbol), Economy (moon
symbol, e. g. for night operation) and Timer (clock symbol) are
available.
Valve protection function (only NC)
If an actuator is not triggered during more than 4 hours of normal
operation, the electronic system switches the actuator for 6 minutes
once every 4 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.
General information
lIndividual room control, specially designed in connection with
surface, radiator and convector heating systems.
Application
Type
AR 010 C : Version 30 V  normally closed (pure white)
AR 4010 C : Version 4 V  normally closed (pure white)
Scope of delivery (Standard)
Version: Alpha-Thermostat Control 30 V / 4 V  normally closed:
1 x AR 010 C or AR 4010 C
1 x Installation instruction
Alternative design:
AR 110 C : Version 30 V  normally open (pure white)
AR 4110 C : Version 4 V  normally open (pure white)
Housing colour on request
Accessories
Alpha Mounting Base AS 1000
Connection recommendations
-OEM actuator NC A 004 / NC A 4004
NO A 104 / NO A 4104
-OEM base without pump control: B 01 / B 401
with pump control: B 0 / B 40
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
Control panel
CLOSE
OPEN
1. .
AR 4010 C2
10 5
4
3
5
6
°C
T 1A
Mikrocontroller Technology
Temperature setback pre-selection
Lock (for locking the thermostat on
the system base)
Selector switch

Room thermostats
Technical data
Möhlenhoff Wärmetechnik GmbH
Museumstraße 54a
38 9 Salzgitter - Germany
Telephone [phone]·8475-0
Fax [phone] ·8475-99
E-Mail: [email protected]
Internet: www.moehlenhoff.de
Technical changes reserved. 8-D58-40-387. Reprint, in whole or in part, is only admissible with our approval.
Technical Information
Alpha-Thermostat
1) not condensing
2) with Alpha Mounting Base + 8,5 mm
Diagram for automatic temperature setback
with Alpha-Thermostat Control
7 mm
2)
80 mm
118 mm
2.
1.
ca.150cm
ca. 30cm
Type AR 20.. C2 AR 40.. C2
further Alpha-Thermostats
Alpha-Thermostat
AR 0.. C /
AR 40.. C
Alpha-Thermostat
AR 0.. K /
AR 40.. K
max. 5 OEM actuator
A 004 / A 4004
max. 5 OEM actuator
A 004 / A 4004
Electric installation
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 Alpha-
Thermostat scope.
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
230V
24V
230V 24V
230V
24V
230V 24V
4 V AC
L1L
30 V AC
LN
Version Control
Contact rating max 5 OEM actuators 30 V
Operating voltage 30 V +/- 10%, 50 Hz
Switched current 0, A (ohmic load)
Control range (heating zone) 10 to 8°C
Temperature setback (heating zone) - 6 K
Hunting approx. 0, K
Valve interval switching if output is inactive for 4 h, once a day
Antifreeze protection on position* 5°C
Storage temperature - 5 to +70 °C
Ambient temperature 0 to +50 °C
Relative humidity max. 80%1)
Degree / class of protection IP 30 / II
CE conformity according to EN 60730
Housing ABS
Number of housing colours 1
Weight 74 g without Alpha Mounting Base
Control
max 5 OEM actuators 4 V
4 V, (19, - 35 V) 50/60 Hz
1 A (ohmic load)
10 to 8°C
- 6 K
approx. 0, K
5°C
- 5 to +70 °C
0 to +50 °C
max. 80%1)
IP 30 / III
EN 60730
ABS
1
74 g without Alpha Mounting Base
Note! The digital timer of the thermostats AR 0.. / 40.. C and AR 0.. / 40.. C are not electrically compatible. However, a confusion
does not lead to any damage of the devices.
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.