Radiator Valves. Building Technologies HVAC Products. NF norm, for 2-pipe heating systems

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1 6 EN - Straight valves VDN Angle valves VEN Reverse angle valves VUN Radiator Valves NF norm, for -pipe heating systems VDN VEN VUN Valve bodies made of brass, mat nickel-plated DN, DN and DN (VDN, VEN ) Integrated preadjustment of k v -values Internally and externally threaded (Rp/R) conforming to ISO 7- Manual knob / protective cover included in the delivery Can be combined with RTN thermostatic actuators, SSA motoric actuators or STA and STS6 thermal actuators Use The radiator valves are used in hot water heating plant for individual room or zone temperature control and limitation They are basically recommended in all rooms, especially where heat gains or different temperature levels occur CEN6en 006 Building Technologies HVAC Products

2 Type summary Order Delivery Example: Type reference straight Type reference angle Type reference reverse angle DN k v -value [m /h) setting range VDN VEN VUN VDN VEN 0 09 VUN k v -value [m /h) at a P-band of K VDN VEN 0 07 When ordering, please give quantity, product name and type reference straight valves VDN protection against dismantling ATN Valves and accessories are packed separately 0 0 Equipment combinations Product Types Data sheet Thermostatic actuators RTN N Motoric actuators SSA / SSA6 / SSA N9 Thermal actuators STA / STA7 N77 Thermal actuators STA7E N7 Thermal actuators STS6 ) N ) Quasi-proportional control action, not recommended for parallel operation Mechanical design / technical design The flow rate can be preadjusted with an orifice Full stroke is ensured irrespective of the preadjustment, which is made with the help of the protective cover Manual knob / protective cover Sealing gland Valve insert O-ring Reset spring 6 Orifice Features and benefits The valves conform to EN The sealing gland can be replaced while the plant is under pressure (no tools required) / Building Technologies Radiator Valves CEN6en HVAC Products 006

3 Accessories AVN Sealing gland ATN Protection against dismantling ATN Manual knob (RAL906) ATN Manual knob AVN Compression fittings Engineering notes The reference numbers for preadjustment are given in the table with the k v -values (see page ) and in the valve sizing charts (see pages 7) Calculate the volumetric water flow V & 0 Q 6 T f 0 V 0 = [m /h] Q 0 = heat demand [kw] T = temperature differential [K] 6 = constant of water f = correction factor = for water Define the pressure drop p v0 across the fully open valve In most types of plant, a differential pressure p v0 of 00 to 0 bar is adequate Calculation of the nominal flow value k v k v V& 0 = [m /h] p v0 = differential pressure across the valve p [bar] v0 Example: Heat demand Q 0 = kw Temperature differential T = K Water volume = 00 m /h V 0 = 6 = l/h Required differential pressure across the valve p v0 = 0 bar Flow 00 k v = = 07 m /h 0 Solution According to the chart (refer to «Valve sizing charts», or table with k v -values), the preadjustment required for a VDN / valve is Tips Noiseless operation is ensured by a pump that provides no more pressure than is needed to transport the required amount of water To keep the valve free from dirt particles, it is recommended to install a strainer Building Technologies Radiator Valves CEN6en HVAC Products 006 /

4 k v -values The k v -value gives the volumetric water flow across the valve of bar V 0 in m /h at a pressure drop p v0 k v -values [m /h] at the different preset positions Control range with SSA, STA actuators and STS6 Control range of thermostatic actuators RTN Reference numbers for preadjustment N N ) VDN / VEN VDN / VEN VDN / VEN VUN VUN ) kv -value at a P-band of K Setting the k v -values The k v -values can be set on the valve s head in steps + N (fully open) using the protective cover, which can be turned through Observe marking on the valve s outlet side! / Building Technologies Radiator Valves CEN6en HVAC Products 006

5 Valve sizing charts VDN VEN p v V 0 /h ] N V Q [ kw ] 0 db(a) * db(a) * p v0 T = K T = K Ws ] p v0 D0 VDN VEN p v V 0 /h ] N db(a) * db(a) * V Q [ kw ] p v0 T = K T = K Ws ] p v0 D0 Building Technologies Radiator Valves CEN6en HVAC Products 006 /

6 VDN VEN p v V 0 /h ] N db(a) * V Q [ kw] 0 db(a) * p v0 T = K T = K Ws ] p v0 D0 VUN p v V 0 N /h ] V Q [ kw ] 0 db(a) * db(a) * p v0 T = K T = K Ws ] p v0 6D0 6/ Building Technologies Radiator Valves CEN6en HVAC Products 006

7 VUN p v V 0 /h ] N db(a) * V Q [ kw ] 0 db(a) * p v0 T = K T = K Ws ] p v0 6D0 *) Measuring conditions of the noise curves on request Notes Mounting Mounting Instructions are printed on the package The valves are supplied preadjusted to N (fully open) To ensure correct functioning of the thermostatic heads and electronic actuators, observe the available mounting choices and mounting conditions Orientation Z Maintenance Repair Disposal The valves are maintenance-free In the event of leakage, the valve s sealing gland can be replaced The valves cannot be repaired; the complete unit must be replaced The valve must not be disposed of together with domestic waste Legislation may demand special handling of certain components, or it may be sensible from an ecological point of view Current local legislation must be observed Warranty Application-related technical data are only warranted when used in connection with the Siemens controllers and actuators listed under «Equipment combinations» When using the valves with actuators of other manufacture proper functioning must be ensured by the user Any warranty by Siemens Switzerland Ltd / HVAC Products becomes void 7/ Building Technologies Radiator Valves CEN6en HVAC Products 006

8 E Technical data Functional data PN class PN Suitable media ) cold and low-temperature hot water, water with propylene-glycol, water with ethylene-glykol < %; recommendation: water treatment to VDI Medium temperature C Perm operating pressure 00 kpa ( bar) Differential pressure p max max 60 kpa (06 bar) Differential pressure p v0 kpa (00 0 bar): recommended range Stroke min mm Materials Valve body brass, mat nickel-plated Fitting brass, mat nickel-plated Protective cover polypropylene O-ring EPDM, NBR Dimensions / weight Refer to «Dimensions» Mounting length EN Thread Rp internally threaded R externally threaded G-thread ) Prefer propylene-glycol for environment protection reasons to ISO 7- to ISO 7- to ISO - Dimensions VDN VEN VUN E 6M0 E D R D Rp C C G R R G B G B l l l Rp Rp l A C 6M0 6M0 Dimensions [mm] Thread [inch] Weight Type DN l l l l A B C D E Rp R G [kg] VDN 7 / /B / 0 VDN / /B / 06 VDN 6 9 / /B 0 VEN 9 / /B / 0 VEN 6 / /B / 060 VEN 6 6 / /B 060 VUN 60 / /B / 0 VUN / /B / 0 / 06 Siemens Switzerland Ltd Subject to alteration Building Technologies Radiator Valves CEN6en HVAC Products 006