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Related Manuals for Viega 1256
Summary of Contents for Viega 1256
- Page 1 Instructions for Use Small surface control station for Fonterra radiant heating and cooling, regulation of the supply temperature (constant), combination of underfloor heating and radiators with different temperature levels Model Year built (from) 1256 01/2010...
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Page 2: Table Of Contents
Table of contents Table of contents About these instructions for use 1.1 Target groups 1.2 Labelling of notes 1.3 About this translated version Product information 2.1 Standards and regulations 2.2 Intended use 2.2.1 Areas of application 2.3 Product description 2.3.1 Overview 2.3.2 Technical data... -
Page 3: About These Instructions For Use
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. -
Page 4: About This Translated Version
About these instructions for use 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. -
Page 5: Product Information
Product information Product information Standards and regulations The following standards and regulations apply to Germany / Europe and are provided as a support feature. Regulations from section: Application areas Scope / Notice Regulations applicable in Ger‐ many Heating water VDI 2035 Regulations from section: Filling the system Scope / Notice Regulations applicable in Ger‐... -
Page 6: Intended Use
Product information Intended use 2.2.1 Areas of application The small surface control station is intended for regulating the tempera‐ ture of surface heating systems at a preselected fixed target value. The setpoint value can be set steplessly on the thermostat head between 20 and 70 °C. -
Page 7: Product Description
Product information Product description 2.3.1 Overview Fig. 1: Component overview Boiler return Return regulating valve (preset: open by one turn) Heating circuit supply Thermometer Flow quantity gauge Safety contact thermostat (factory setting 60 °C) Filling / drainage valve Pump Filling / drainage valve 10 - Protective cap 11 - Heating circuit return 12 - Thermostat head... -
Page 8: Technical Data
Product information Displays on the pump control element Fig. 2: Control elements of the pump Operating / fault notification LED Control type Operating button Characteristic line Operating / fault notification LED LED is green during normal operation. LED illuminates/blinks when there is a fault. Display of selected control type Δp-v Δp-c... -
Page 9: Operating Mode
10 K above the setpoint value of the thermostat head. Pump control types The pump has the following control types: For use in surface heating elements Viega recommends the control type constant differential pressure Δp-c. See also Ä ‘Setting the control type’ on page 21. - Page 10 Product information Differenzdruck variabel Δp-v (I, II, III) Recommended for two-pipe heating installations with radiators to reduce flow noises at the thermostat valves. Constant differential pressure Δp-c (I, II, III) Recommendation for underfloor heating or large-dimensioned pipelines or all applications without changeable pipeline characteristic lines (e.g. storage loading pumps), as well as single-pipe heating installations with radiators.
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Page 11: Handling
Handling Handling Assembly information 3.1.1 Installation dimensions Fig. 3: Installation dimensions Installation and connection dimensions Height approx. 480 mm Width approx. 430 mm Depth approx. 115 mm connection G¾ Eurocone Small surface control station... -
Page 12: Assembly
Handling Assembly 3.2.1 Wall mounting NOTICE! The small surface control station is not suitable for use in splash water zones. ▶ Install the small surface control station flush in a wall cut-out or a pre-wall. 3.2.2 Connecting pipes ▶ Use a pipe shear (model 5341) to cut the pipe to length at right angles. - Page 13 Handling ▶ Use a fork spanner SW 24 to hold the output connection in place, and a fork spanner SW 27 / SW 30 to tighten the union nut. Setting the flowthrough volume ▶ Remove the protective caps. ▶ Use a ventilation key to close the valve in clockwise direction (= small value at flow control unit).
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Page 14: Commissioning
Depending on the installation situation, there are different ways to con‐ nect the 230 V connection cable. Additional system components may be required. Fig. 4: Wiring diagram for a Viega room thermostat 230 V (left), clock thermostat 230 V (right) Factory wired... -
Page 15: Filling The Control Station
Handling Single-room supply Multi-room supply Additional compo‐ Room thermostat Basic unit nents Actuators Room thermostats (maximum of four) Power connection The connection cable of the small surface Connect the connection cable of the small control station is directly connected to the surface control station to a base unit. -
Page 16: Flushing The Heating Circuits
Handling ▶ Connect the filling water hose to the filling / drainage valve on the supply bar of the manifold. ▶ Open the filling / drainage valve on the supply and return bars with the square ring spinner integrated into the cap. ▶... - Page 17 Handling Setting the supply regulating valve Fig. 5: Diagram 1 - pressure loss [hPa] 2 - volume flow [l/h] Setting the return regulating valve Fig. 6: Diagram 1 - pressure loss [hPa] 2 - volume flow [l/h] Small surface control station...
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Page 18: Setting The Heating Circuit Supply Temperature
Handling Total pressure loss 1.000 L/mi n L /min L/mi n L /min °C 1.000 10.000 Fig. 7: Diagram 1 - pressure loss [hPa] 2 - volume flow [l/h] Approximate values for setting the return regulating valve Heat output [Watt] Return regulating valve [open by following turn(s)] 1400... -
Page 19: Control
50 °C. The temperature in the boiler or heating circuit is often signifi‐ cantly higher (e.g. 70/50 °C or 60/40 °C). To prevent damage to the floor structure due to overtemperature of the heating medium, Viega recom‐ mends limiting the target value of the supply temperature at the thermo‐... -
Page 20: Programming The Pump Settings
Handling Maximum supply temperature of the heating water Wall heating Temperature * Gypsum or lime plaster 50 °C Loam rendering 50 °C Lime-cement plaster 70 °C Side 12 (plaster boards) 50 °C Maximum supply temperature in accordance with current regulations, Ä... - Page 21 Handling ▶ To break off the procedure early, press the operating button for 3 seconds. Setting the control type ▶ Briefly press the operating button (approx. 1 second). ▷ The LEDs display the set control type and characteristic line. ▶ To change the setting, press the operating button several times until the LEDs display the desired combination of control mode and char‐...
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Page 22: Faults
Handling ▶ Disconnect the pump from the power supply. In the event of a malfunction, contact the Viega Service Centre. Faults 3.5.1 Troubleshooting Fault Cause Solution Floor heating cir‐ Safety temperature limiter is set too low Set the safety temperature limiter at least... - Page 23 Handling Fault Cause Solution The difference between the supply tem‐ Set the supply temperature higher at the perature of the boiler and the desired boiler. At the maximum output require‐ supply temperature of the underfloor ment of the underfloor heating, the supply heating is too low for the existing heat temperature of the heat generator must load.
- Page 24 The rotor locks. Activate manual restart. If the fault light has not been rectified, contact the Contacting / Winding The winding is defective. Viega Service Centre. Flashes Undervoltage / over‐ Power supply on the mains side Check mains voltage and oper‐ voltage too low or too high.
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Page 25: Disposal
Handling 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. Electronic components and batteries must not be put in the domestic waste but must be disposed of appropriately in conformity with the applicable directives, see Ä... - Page 26 Viega GmbH & Co. KG service-technik@viega.de viega.com INT • 2022-08 • VPN210073...
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