Siemens SSA955 User manual

CE1N2700en
2017-11-09 Building Technologies
2
700
Synco™ living
Radiator Control Actuator SSA955
∂RF-controlled actuator for radiator valves
∂RF communication based on KNX standard (868 MHz, bidirectional)
∂Battery-powered by commercially available 1.5 V batteries
(reversed polarity protection)
∂Low power consumption
∂Silent mode (e.g. for use in sleeping rooms)
∂Nominal stroke 2.5 mm
∂Valve positioning force 110 N
∂Automatic identification of valve stroke
∂Parallel connection of multiple actuators possible
∂Integrated temperature sensor
∂For direct mounting with coupling nut (no tools required)
∂Manual adjustment

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Use
∂For integration into the Siemens Synco living system
∂Suited for use in heating plant for operating radiator valves from Siemens or radiator
valves of other manufacture
∂Several radiator control actuators can be used in one room
Compatibility
The SSA955 is suited for use with the following types of radiator valves from Siemens:
Type reference Valve type kvs PN class Data Sheet
[m
3
/h]
no.
VDN.., VEN.., VUN.. Radiator valves 0.25…1.41 PN10 2105, 2106
VD…, CLC… Radiator valves 1.9…2.6 PN10 2103
VPD…, VPE… MCV radiator valves 0.02…0.48 PN10 2185
VD…, VE…, VU… Radiator valves 0.25…3.4 PN10 2145, 2146
2T../A Radiator valves 1.25…2.5 PN10 4848
For radiator valves with AV… adapters, refer to "Accessories"
kvs = nominal flow rate of chilled water (5…30 °C) through the fully opened valve (H100) at a differential
pressure of 100 kPa (1bar)
The SSA955 can operate without adapter radiator valves of other manufacture provided
they have a connecting thread M30x1.5 mm and meet the following requirements:
Requirements placed on valves of other manufacture:
Force 100 N nominal
Fully closed x > 9.0 mm
Fully open y ′14.5 mm
90187
y
A
F
M30 x1.5
x
AB
The following makes satisfy these requirements and can be used with the SSA955:
∂Honeywell MNG
∂Cazzaniga
∂Heimeier
∂TA
∂Finimetall
∂Oventrop M30x1.5 (from 2001)
∂Junkers
Other combinations on request.
To ensure optimum control performance, the valve’s volumetric flow should not be
preadjusted.
If preadjustments are required, refer to the relevant technical documentation on the
valves for detailed information. The SSA955 supports valves with a stroke of > 0.5 mm
(refer to paragraph “Calibration”).
Siemens valves
Valves of other
manufacture
without adapter
Valve preadjustment /
kv limitation

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Accessories
For fitting the SSA955 to radiator valves of other manufacture, the following types of
adapters are available:
Type
reference For radiator valves from: Type reference For radiator valves from:
AV51 Beulco distributor M30x1.0 AV57 Herz
AV52 Comap AV58 Oventrop M30x1.0
AV53 Danfoss RA-N (RA2000) AV59 Vaillant
AV54 Danfoss RAVL AV60 TA
AV55 Danfoss RAV AV61 Markaryd
AV56 Giacomini
Ordering
When ordering please give quantity, product name and type reference.
Radiator valves and adapters, if required, must be ordered as separate items.
Each SSA955 is supplied complete with alkaline batteries and Mounting Instructions.
Product documentation
The Operating and Commissioning Instructions for the SSA955 are contained in the
product documentation of the central apartment unit.
Functions
T
M+
SSA955
ƒ
„
2700B01
•
‚
…
…
•
‚
ƒ
„
Radiator
Synco 900 central unit
Room control Communication
RF 868 MHz (BiBat)
Force measurement
Positioning
Speed
Red Green
Valve
External room sensor *
Internal room sensor *
Multifunction LED
Multifunction button
Manual adjustment
* Use of both sensors not possible (either indoors or outdoors)
Adapters AV… for
valves of other
manufacture
Scope of delivery
Block circuit diagram
Main function

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
The SSA955 controls the room temperature based on the data delivered by the central
apartment unit.
When using several SSA955 in one room, the first SSA955 integrated in the room
operates as the lead controller. The other SSA955 are controlled by the lead controller
via the central apartment unit. The multifunction button can be used to query the lead
controller. The multifunction LED indicates when the SSA955 operates as lead
controller.
The binding is used by the SSA955 to sign on at the central apartment unit, thus
integrating it into the RF system. The binding process is triggered via the multifunction
button. It is indicated by the multifunction LED.
Every time a binding is established and every time the batteries are changed, the
SSA955 automatically starts the calibration process. This ensures that the SSA955 will
be optimally matched to the respective radiator valve. The SSA955 informs the central
apartment unit if calibration could not be performed. If the valve’s stroke drops below
the minimum, or if no valve has been attached to the actuator, the SSA955 will deliver
an error message. If calibration was successful, the SSA955 will automatically switch to
control mode.
For use in rooms, such as sleeping rooms, where extremely quiet operation is required,
the SSA955 can be switched to low-noise operation from the central apartment unit.
Summer operation is triggered from the central apartment unit. When the SSA955
receives a command to start summer operation, the radiator valve will be opened or
closed, depending on the position demanded by the central apartment unit.
The antilime function is triggered by the central apartment unit according to a time
schedule. When the SSA955 receives an antilime command, the radiator valve will be
fully opened and fully closed once. This prevents the valve from seizing. When the
antilime function is completed, the valve will assume the previous control position
again.
The multifunction button can be used to query the battery state and the lead control
function. Both battery state and lead control function are indicated by the multifunction
LED.
The multifunction button can be used to trigger a connection test. This test is made to
check the radio link to the central apartment unit. The RF connection test is indicated
by the multifunction LED.
The multifunction button can be used to reset the SSA955 to the default state as
supplied. Then, the SSA955 must be reintegrated into the system.
If the radio transmission between SSA955 and central apartment unit is interrupted, the
built-in temperature sensor and the comfort setpoint will be used for control.
Parallel operation
Binding
Calibration
Silent mode
Summer operation
Antilime function
State query
RF connection test
Supply state
RF failure

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
All error and maintenance messages are forwarded to the central apartment unit where
they appear on the display.
The following messages are delivered by the SSA955:
Error messages Maintenance message
Communication error
(no communication for one hour)
Calibration error
(undefined valve travel)
Sensor error
(failure of integrated room temp. sensor)
Batteries discharged
(battery life ′ 3 months)
Operating and indicating elements
+
2700Z07
Multifunction LED
Manual adjustment
Multifunction button
Overview of functions of the indicating and operating elements of the SSA955:
Multifunction LED Multifunction button Manual adjustment
Battery state
Binding state
Binding process
Calibration state
Calibration process
Lead controller
Battery state query
RF connection test
Binding
Calibration
Disconnect device from the
system
Restoring the default state
Manual change of room
temperature
Refer to "Manual adjustment"
For more detailed information about the functions and operation of the SSA955, refer to
the product documentation covering the central apartment unit.
Error and maintenance
messages

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Notes on engineering and operation
∂The mounting location should be chosen such that the integrated temperature
sensor can acquire the room temperature as accurately as possible. The SSA955
should not be installed in niches or bookshelves and not behind doors or curtains.
Temperature measurement should not get adversely affected by direct solar
radiation or other heat or refrigeration sources
∂The permissible temperatures must be observed (refer to ”Technical data”)
∂For notes relating to engineering and mounting RF devices of the Siemens Synco
living system, refer to Data Sheet CE1N2708en
When mounting the SSA955, ensure that
there is sufficient clearance to replace the
batteries, to press the multifunction button
and to monitor the multifunction LED.
2700Z11
″60 mm
Actuator and valve are joined by a coupling nut with no need for using tools.
The SSA955 is supplied with the stem fully retracted (to facilitate mounting).
Mount the SSA955 first and then insert the batteries.
27 00 Z 08
Prior to commissioning, check to ensure that the SSA955 is correctly fitted to the valve
and that the batteries are correctly inserted.
For more detailed information about commissioning, refer to the Synco living Operating
Instructions.
The SSA955 is maintenance-free.
The system indicates when batteries must be replaced. The batteries are to be inserted
when the SSA955 is mounted (reversed polarity protection).
WARNING
Risk of explosion due to fire or short-circuit, even if the batteries are
empty
Risk of injuries from by flying parts
●Do not allow the batteries to come into contact with water.
●Do not charge the batteries.
●Do not damage or destroy the batteries.
●
Do not heat the batteries to more than 85 °C.
Mounting location
Installation
Note:
Preferred mounting
positions
Commissioning
Maintenance /
change of batteries

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Siemens Radiator Control Actuator SSA955 CE1N2700en
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WARNING
Electrolyte leakage
Chemical burns
●Only grasp damaged batteries using suitable protective gloves.
●If electrolyte comes into contact with eyes, immediately rinse eyes with
plenty of water. Consult a doctor.
Observe the following:
●Only replace batteries with batteries of the same type and from the
same manufacturer.
●Observe the polarities (+/-).
●The batteries must be new and free from damage.
●Do not mixed new batteries with used batteries.
●Store, transport, and dispose of the batteries in accordance with local
regulations, guidelines, and laws. Also observe information from the
battery manufacturer.
The SSA955 is protected against
overloads and blocking (slip clutch).
For service work, or in the event of fault,
the SSA955 can be driven to any
position using a 3 mm hexagonal socket
wrench.
-+
2700Z06
-+
3 mm
The SSA955 cannot be repaired. It must be replaced as a complete unit.
Disposal
The device is considered an electronics device for disposal in terms of
European Directive 2012/19/EU and may not be disposed of as do-
mestic garbage.
●Dispose of the device through channels provided for this
purpose.
●Comply with all local and currently applicable laws and
regulations.
●Dispose of empty batteries in designated collection points.
Warranty
Application-related technical data are only warranted in connection with the Siemens
Synco living system. For equipment combinations, refer to the Data Sheet of the central
apartment unit.
When using the SSA955 in connection with valves of other manufacture that are
not mentioned in this Data Sheet under “Accessories”, correct functioning must
be ensured by the user. In that case, Siemens will assume no responsibility for
service and warranty.
Manual adjustment
Repairs

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Technical data
Type of battery 3 x alkaline batteries LR6 (AA) 1.5 V
Battery life (capacity ≥2.5 Ah) in normal operation: 3 years
in silent mode: 2 years
Frequency 868 MHz (bidirectional)
Range typically 30 m in buildings
Protocol KNX RF-compatible
Sound power level (LwA) <30 dBA in normal operation
<25 dBA in silent mode
EN ISO 3741
Nominal stroke 2.5 mm
Minimum valve stroke 0.5 mm
Positioning force typically 110 N
Permissible temperature of
medium in the connected valve
1…110 °C
Sensing element NTC 4.7 kOhm resistor
Measuring range 0…50 °C
Time constant 29 minutes
Type of controller PID
Electromagnetic compatibility
(Application)
For residential, commercial and
light-industrial environments
Product standard EN60730-x
EU Confor
mity (CE)
A5W90000894
1)
RCM Conformity
A5W90000909_A
1)
EAC Conformity Eurasia Conformity
Safety class III to EN 60730-1
Housing IP401) to EN 60529
Degree of pollution 2 to EN 60730-1
The Environmental product declaration
CE1E2700en 1) provides information on
environmentally compatible product design
and assessment (RoHS compliance,
composition of substances, packaging,
environmental benefit and disposal).
Dimensions 2) refer to “Dimensions”
Coupling thread to valve cap nut M30x1.5
Weight incl. batteries and packaging 0.305 kg
plastic ASA+PC
white NCS S 0502
-G
1) The documents can be downloaded from http://siemens.com/bt/download
2) Completely mounted
Power supply
RF
Noise level
Actuator
Temperature of medium
Built-in temp. sensor
Controllers
Norms and directives
Protection
Environmental
compatibility
Dimensions
Weight
Housing material
Housing colors

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Operation
IEC 60721-3-3
Transport
IEC 60721-3-2
Storage
IEC 60721-3-1
Climatic conditions class 3K5 class 2K3 class 1K3
Temperature 0…+50 °C -25…+70 °C -20…+65 °C
Humidity 5…95 % r.h. <95 % r.h.
Humidity 5…95 % r.h.
(noncondensing) <95 % r.h. 5…95 % r.h.
Mechanical conditions class 3M2 class 2M2 class 1M2
Elevation above sea level min. 700 hPa, corresponding to max.
3000 m above sea level
Dimension
Dimensions in mm
75,4
95
80,6
48
2700M01
75,6
Environmental
conditions

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Siemens Radiator Control Actuator SSA955 CE1N2700en
Building Technologies 2017-11-09
Issued by
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Gubelstrasse 22
6300 Zug
Switzerland
Tel. [phone]
www.siemens.com/buildingtechnologies
© Siemens Switzerland Ltd, 2017
Technical specifications and availability subject to change without notice.