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23
ENG
4.3.1 Optional safety temperature limitation and actuator
STL safety temperature limitation (as contact thermostat) and 230 V electrothermal actuator (NC)
as optional accessories:
The safety
temperature limiter (STL) interrupts the power
supply to the pump if the set temperature is
exceeded and switches it back on if it drops
below the set temperature.
Technical data – STL
Adjustment range: 20 – 90 °C
Switched power: 16 (2.5) A, 250 V
Temp. gradient ≤ 1 K/min
Protection code: IP 20
Dimensions: 112 x 46 x 55 mm
Cable grommet M20 x 1.5
Installation steps:
1. Use the tightening strap to fasten the contact thermostat to the MC FL pipe to ensure
a good contact for heat transfer. (to do this, remove the insulation from the tube.)
2. Aer loosening the bolts, remove the cover.
3. Connect to the electricity supply in accordance with the following circuit diagram.
4. Fix the cable to the strain relief clamp.
5. Fit the cover and fasten with the bolts.
The electrical connection plan must be observed!
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