User Manual

ManualsBrandsSiemens ManualsTEVA (BC4)Electromotoric actuator SFP..

865

Elctromotoric Actuators

for small valves VVP47.., VXP47.., VMP47..

SFP21/18

SFP71/18

• SFP21/18 AC 230 V operating voltage, 2-position control signal

• SFP71/18 AC 24 V operating voltage, 2-position control signal

• 135 N positioning force

• Spring return

• Manual adjustment

• For direct mounting with union nut (no tools required)

• Integral 1.8 m connecting cable

• Auxiliary switch, type ASC2.1/18 (optional)

Use

The SFP21/18 and SFP71/18 actuators are used in conjunction with zone valves

VVP47.., VXP47.. and VMP47.., primarily in heating, ventilation, air conditioning and

refrigeration systems for water-based control of low-temperature hot water and cooling

water. The SFP.. actuators together with the 3-port valves VXP47.. are suitable for low

leakage change over applications.

Functions

The electric actuator requires an on/off controller (thermostat) to control the valve. If the

temperature of the medium deviates from the set-point, the controller output signal

causes the actuator to drive the valve open. When the temperature of the medium

reaches the set-point, the control signal is cut off and the valve closes again.

CA1N4865en

20.04.2011

Siemens Building Technologies

HVAC Products

Summary of content (6 pages)

PAGE 1
4 Elctromotoric Actuators for small valves VVP47.., VXP47.., VMP47.. • • • • • • • • 865 SFP21/18 SFP71/18 SFP21/18 AC 230 V operating voltage, 2-position control signal SFP71/18 AC 24 V operating voltage, 2-position control signal 135 N positioning force Spring return Manual adjustment For direct mounting with union nut (no tools required) Integral 1.8 m connecting cable Auxiliary switch, type ASC2.1/18 (optional) Use The SFP21/18 and SFP71/18 actuators are used in conjunction with zone valves VVP47.
PAGE 2
Type summary Accessories Prod. no. Operating voltage SFP21/18 AC 230 V SFP71/18 AC 24 V Prod. no. Description ASC2.1/18 Auxiliary switch open/closed Positioning time Control signal Connecting cable 10 s 2-position 1.8 m Switching point Switching capacity Connecting cable At approx. 50% stroke AC 250 V / 3(2) A 1.8 m Ordering Example: Product number Stock number Designation Quantity SFP71/18 SFP71/18 Electromotoric Actuators 2 ASC2.1/18 ASC2.
PAGE 3
Notes Engineering The admissible temperatures (see "Technical data", page 5) must be observed. Electrical connection • The actuator may be operated only with alternating current (AC 230 V for SFP21/18 and AC 24V for SFP71/18) Caution • Phase cut and pulse-width-modulated signals are not suitable. • Recommended number of opening/closing operations: approx. 50 per day, with 200 heating or cooling days Mounting Orientation Mounting instructions are enclosed with the packaging.
PAGE 4
Maintenance • The actuators require no maintenance. • In the event of a fault, the actuator can be replaced without removing the valve. The operating voltage must be switched off during this process. • The actuators cannot be repaired. Disposal The device contains electrical and electronic components and must not be disposed of together with domestic waste. This applies in particular to the PCB.
PAGE 5
Technical data Power supply Operating voltage Voltage tolerance SFP21/18 SFP71/18 AC 230 V ± 15% AC 24 V ± 20% Frequency 50 Hz Max. power consumption 9.8 VA Fuse protection for incoming cable Control Operating data Max. 3 A (external) Control signal On/off via temperature controller Phase cut and pulse-width-modulated signals are not suitable. Opening/closing operations Recommended number: approx. 10 000 / year (equivalent to approx.
PAGE 6
General ambient conditions Operation EN 60721-3-3 Environmental conditions Transport EN 60721-3-2 Storage EN 60721-3-2 Class 3K3 Class 2K3 Class 2K3 Temperature +1 ... +50 °C –25 ... +70 °C –5 ... +50 °C Humidity 5 ... 85 %rh < 95 %rh 5 ... 95 %rh Connecting cable Cable SFP21/18 AC 230 V Cable color Connection Operating voltage 2-core SFP71/18 AC 24 V Cable color Connection Brown L Red G Blue N Black G0 Auxil. switch ASC2.