Actuator set
Product information
Actuator set
for the circulation regulation valve model 2281.15 and 2281.5
| Year built (from): | 15.07.2011 |
Trade mark rights exist for this document, further information can be found at www.viega.com/legal-notices.
Target groups
The information in this manual is directed at heating and sanitary professionals and trained personnel.
It is not permitted for individuals without the abovementioned training or qualification to mount, install and, if required, service this product. This restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with the general rules of engineering and the Viega instructions for use.
Labelling of notes
Warning and advisory texts are set aside from the remainder of the text and are labelled with the relevant pictographs.
DANGER!
This symbol warns against possible life-threatening injury.
WARNING!
This symbol warns against possible serious injury.
CAUTION!
This symbol warns against possible injury.
NOTICE!
This symbol warns against possible damage to property.
INFO!
Notes give you additional helpful tips.
About this translated version
This instruction for use contains important information about the choice of product or system, assembly and commissioning as well as intended use and, if required, maintenance measures. The information about the products, their properties and application technology are based on the current standards in Europe (e. g. EN) and/or in Germany (e. g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/Germany. These should serve as recommendations in the absence of corresponding national regulations. The pertinent national laws, standards, regulations and guidelines, as well as other technical guidelines, have priority over German/European guidelines in this manual: The information is not binding for other countries and territories and should, as mentioned, be considered as support.
Intended use
The actuator serves the purpose of triggering thermostatic circulation regulation valves in hot water installations.
INFO!
The use of the model for areas of use and media other than those described must be approved by the Viega Service Center.
Areas of use
Use is possible with the following models:
2281.5
2281.15
The general rules of engineering must be observed for planning, execution, operation and maintenance of drinking water installations.
E. g. the following regulations apply:
DIN EN 806 Part 1–5 and DIN EN 1717
Supplementary national regulations amongst others DIN 1988, VDI/DVGW 6023 and Drinking Water Ordinance (DWO)
VDE 0100 and the valid guidelines for electrical installation
Media
The model is suitable for the following media, among others:
Drinking water without limitations
in acc. with DWO
max. chloride concentration 250 mg/l
in acc. with DWO
Product description
Overview
The model is equipped as follows:
Actuator 24 V with valve adapter
Easytop drainage valve
Temperature sensor (Pt1000)
Valve insert
Threaded connection
INFO!
Sealing of the G-threads takes place by pressing the sealing surfaces together. For this reason, no additional sealants (hemp, sealing paste / thread etc.) may be used.
Markings on components
The model is marked as follows:
Position indicator (valve open or closed)
Voltage and power rating
CE Mark
Compatible components
The actuator set is compatible with the circulation regulation valves 2281.15 and 2281.5.
Please contact the Viega Service Center for questions on this subject.
Operating mode
General
The adjusting mechanism of the actuator works with a PTC-heated flexible material element and a pressure spring.
The expansion material element is heated by activating the operating voltage and the integrated spindle is moved. The power created by the movement is transferred to the valve spindle and opens or closes the valve.
When the operating voltage is applied, the valve remains closed for a short while (dead time), then the valve opens evenly due to the spindle movement against the pressure of the pressure spring.
The valve is closed evenly by the closing force of the pressure spring, after the waiting time, by switching off the operating voltage.
The closing force of the pressure spring is coordinated with the closing force of conventional valves and hold the valve closed in a currentless state.
First open function
The actuator is supplied with "first-open function", that means: Initially, it is minimally currentless open. This allows operation in the building phase, even when the electrical wiring is not yet completed. The first-open function is automatically deactivated as soon as the operating voltage has been applied for longer than 6 minutes.
Technical data
Observe the following operating conditions for the installation of the actuator set:
actuator
Version |
|---|
Voltage |
Switch-on current max. |
Operating current |
Operating capacity |
Closing and opening times |
Displacement |
Pulling load |
Media temperature |
Storage temperature |
Ambient temperature |
Degree of protection / Protection class |
CE conformity in acc. with |
Casing / Casing colour |
Weight |
Connection line / line length |
Overvoltage resistance in acc. with EN 60730‑1 |
Currentless closed (NC) |
24 V AC / DC |
250 mA |
75 mA |
2 W |
Approx. 3 minutes. |
4 mm |
100 N +/- 5 % |
0 up to 100 °C 1) |
-25°C up to +65 °C |
0°C up to +65 °C |
IP 54 2) |
EN 60730 |
Polyamide / grey |
100 g incl. 1 m connection cable |
2 x 0.75 mm2 PVC, grey / 11 m |
— |
1)
| depending on the adapter also higher |
2)
| in all mounting positions |
Temperature sensor
Resistance |
|---|
Connection cable |
Measuring range |
Measuring element |
Protective pipe material |
Protective pipe diameter |
Protective pipe length |
Connection line / line length |
Degree of protection |
Delay time |
permitted drop height |
3.85 Ω / °C |
TF 45 |
- 20 up to + 105 °C |
1 x Pt1000 /2 conductor / Cl. B |
1.4571 |
6.0 mm |
50 mm |
2 x 0.34 mm2 PVC, grey / 2.5 m |
min. IP 54 |
min. 20 s |
with and without packaging 1 m |
Switching behaviour / head line
- 1 - time
- 2 - holding time
- 3 - turn-off time
- 4 - voltage switched on
- 5 - dead time
- 6 - turn-on instant
- 7 - off
- 8 - on
- 9 - Voltage
- 10 - maximum
- 11 - hub [mm]
Handling
Assembly information
Mounting instructions
Checking system components
INFO!
Do not remove the model from the packaging until immediately before use.
System components may, in some cases, become damaged through transportation and storage.
Check all parts.
Replace damaged components.
Do not repair damaged components.
Contaminated components may not be installed.
During assembly
Observe the following when mounting the model:
use suitable tools
NOTICE!
The actuator should only be mounted in a vertical or horizontal position.
The lifespan may be shortened by contamination (e.g. condensation water), if it is mounted from the top instead of the bottom.
Connection to the building automation
Wiring / connection overview
The regulating electronics / building automation must be supplied on site.
Pipes
We require the following pipes for installation:
Type of pipe |
|---|
Bell wire |
Light plastic-sheathed cable |
Name | Cross section |
|---|---|
Y(R) | 0.8 mm2 |
NYM | 1.5 mm2 |
The following formula is used to calculate the maximum cable length (copper cable) at a nominal voltage of 24 V:
L = C x A/n
L = Length in m
C = Constant (269 m/mm2)
A = Cross section of the line in mm2
n = Number of actuators
Transformer (24 V)
A safety transformer in acc. with EN 60335 must be used.
One rule of thumb for dimensioning results from the 6 Watt switch on power of the actuator.
Rule of thumb: PTrafo = 6 W x n (n = Number of actuators)
Assembly
Mounting the actuator set
Mounting is demonstrated with the example model 2281.5.
-
Remove regulating unit.
-
Screw in valve insert and tighten with spanner (SW 19). Sealing is achieved using an O-Ring.
-
Screw on valve adapter and mount actuator.
-
Perform functionality test.
Mounting the drainage valve and temperature sensor
-
Unscrew the drain plugs with an Allen key (SW 5).
-
Insert Easytop drainage valve and tighten using a spanner (SW17). Sealing is achieved using an O-Ring.
-
Insert the temperature sensor into the closed Easytop drainage valve.
Leakage test
The installer must perform a leakage test before commissioning.
This test is carried out on a unit that is finished but not yet covered.
The general rules of engineering must be observed.
E. g. the following regulations apply:
DIN EN 806–4
The result must be documented.
Maintenance
NOTICE!
Inform your customer or the operator of the drinking water installation that the system has to be maintained on a regular basis.
DIN EN 806‑5 must be observed for the operation and maintenance of drinking water installations.
Disposal
Separate the product and packaging materials (e. g. paper, metal, plastic or non-ferrous metals) and dispose of in accordance with valid national legal requirements.