2 103 EN 215-1 Small Valves VD1…CLC DIN-range with a higher kv-value · · · · · CE1N2103en 2020-10-06 Valve body made of brass, mat nickel-plated DN 15, DN 20 and DN 25 Internally and externally threaded (Rp / R) conforming to ISO 7-1 Manual knob / protective cover included in the delivery Can be combined with motoric SSA…-, thermal STA…- - actuators Smart Infrastructure .
Use · For use in ventilation and air conditioning systems for water-side control of chilled ceilings and terminal units in closed circuits, e.g. for induction units, fan coil units, small re-heaters and small re-coolers. - 2-pipe systems with 1 heat exchanger for heating and cooling - 4-pipe systems with 2 separate heat exchangers for heating and cooling · In closed-circuit zone heating systems, e.g.
Engineering notes The reference numbers for preadjustment are given in the table with the kv-values (see page 3) and in the valve sizing charts (see page 4). 1. Calculate the volumetric water flow V& 100 . V 100 = 2. Q100 [m3/h] 1.163 ´ DT ´ f1 Q100 ΔT 1.163 f1 = = = = heat/refrigeration demand [kW] temperature differential [K] constant of water correction factor = 1 for water Define the pressure drop Δpv100 across the fully open valve In most types of plant, a differential pressure Δpv100 of 0.
Valve data kv-values at the different preadjusted positions [m3/h] Reference numbers for preadjustment 01) 1 2 3 4 5 6 7 02) Valve stroke [mm] 0 0.188 0.375 0.563 0.75 0.938 1.125 1.313 1.5 VD115CLC 0 0.25 0.65 0.88 1.12 1.30 1.46 1.57 1.90 VD120CLC 0 0.25 0.60 0.91 1.18 1.43 1.64 1.85 2.60 VD125CLC 0 0.25 0.60 0.91 1.18 1.43 1.64 1.85 2.
Valve sizing charts V100 [m3/h] VD115CLC 0.05 0.1 0.2 0.3 0.5 1 2 10 8 50 40 0.5 0.4 5 4 30 0.3 3 20 0.2 1 10 3 4 5 6 702) 2 0.1 8 2 1 Dpv100 [ mWC] 1.0 0.8 Dpv100 [ bar] Dpv100 [ kPa] 0.02 0.03 100 80 5 0.05 0.5 3 0.03 0.3 2 0.02 0.2 0.01 2000 0.1 1 20 30 50 100 V100 200 300 500 1000 [ l/h ] 0.2 0.3 0.5 1 2 3 5 10 20 DT = 10 K 0.4 0.6 1 2 4 6 10 20 40 DT = 20 K V100 [m3/h] 0.02 0.03 100 80 0.05 0.1 0.2 0.3 0.
Mounting notes · To ensure correct functioning of the thermostatic heads and electromotoric actuators, observe the available mounting choices and mounting conditions. · VD1…CLC remains open if no actuator is mounted. 90° 90° 4716Z16 Orientation Maintenance The small valves are maintenance-free. Repair The valves cannot be repaired; the complete units must be replaced.
Technical data Functional data Standards, directives and approvals PN class Permissible media Medium temperature Perm.
Dimensions R Rp D C 2103M01 E G A B Dimensions [mm] Type DN A B VD115CLC 15 61 33 VD120CLC 20 65 40 VD125CLC 25 68 35 Published by: Siemens Switzerland Ltd. Smart Infrastructure International Headquarters Theilerstrasse 1a 6300 Zug Switzerland Tel. +41 58-724 24 24 www.siemens.com/buildingtechnologies C Thread [inch] D 46.5 24.5 E 35 Weight [kg] Rp R G 1/2 1/2 3/4 0.28 3/4 3/4 1 0.33 1 1 1 0.