8/17/2019 Sauter TSHK 670...672 Fan-coil Room-temperature
Controller, Heating-cooling Sequence
1/3
21.165/1
TSHK 670...672: Fan-coil room-temperature controller,
heating-cooling sequence
For flexible individual-room control in residential and business
premises. For quasi-continuous
temperature control of air-conditioning systems (fan-coil).
Gradual change-over from heating to cooling
via a sequence characteristic. For 2-point pulsed operation.
Suitable for thermal drives, ventilators or
cooling equipment in air-conditioning systems.
Housing 127 × 75 mm of pure-white (RAL 9010),
flame-retardant thermoplastic (fire class as per
UL94 HB). Black baseplate with NTC sensor, electronic evaluation
unit and switching relay. Setpointadjuster with scale and rear
mechanical min./max. limitation of the setting range. Suitable for
mounting
onto walls or recessed junction boxes. Cable inlet at rear.
Separate terminal compartment with screw
terminals (for wire of max. 2,5 mm2).T
Y01938
Type Operating mode Number of
switches
Power Weight
kg
TSHK 670 F001 Heating-cooling sequence; 4-pipe − 230 V~
0,18
TSHK 671 F001 Heating-cooling sequence; 4-pipe 1 230 V~ 0,18
TSHK 672 F001 Heating-cooling sequence; 4-pipe 2 230 V~ 0,18
TSHK 670 TSHK 671 TSHK 672
Mains switch, on/off − • •Mode switch − −
1
0,5
0
Xp
T
Xs
E=0,25
E=0,50
E=0,75
B09204
E (control factor)
Xp
Fan speeds−
−
Indicator − − 1 LED
Wiring diagram A09161 A09162 A09163
Power supply 1) ± 10%, 50...60 Hz Time behaviour in
air: Dead time Time constant
Switch rating 10(4) A, 230 V~ still 2 min 20 min
Ventilator 6 (3) A, 230 V~ moving (0.2 m/s) 1 min 15 min
Ambient temperature 0...55 °C
Setting range 5...30 °C Degree of protection IP 30 (EN
60529)
P-band Xp 2 × 3 K Protection class II (IEC 60730)
Sequence dead zone 2 K ± 0,7
Hysteresis1) approx. ± 0,1...0,5 K Wiring diagram see
table
Shortest switching period approx. 19 min (E = 0,5) Dimension
drawing M09206
Fitting instructions MV 505680
Accessories 0362239 001* Intermediate cover plate in pure
white; fits various recessed junction boxes
*) Dimension drawing for accessory is available under the
same number
1) The device is electronically made to pulse. The control
factor initially falls to nought at the ‘heating’ output as the
temperature rises. After adead zone, the control factor rises at
the ‘cooling’ output. The pulsing causes a small temperature
deviation of ± 0,1...0,5 K, depending on
the time constant of the room.
Operation
The room temperature is measured using an internal NTC
temperature sensor and then compared
with the setpoint. An electric switching relay is operated in
relation to the temperature deviation. When
the setpoint has been reached, the switch moves to the
mid-position (‘OFF’). The controller’s operating
points are determined by the setpoint, the dead zone and the
proportional band.
Sauter Components 7121165003 02
