Watts KLSC Series, Installation And Operating Manual

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KLSC20-KLSC25-KLSC32-IM-DE-W-UK-08-2021-Rev.0 | Part no. 10084836
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3 Technical features
Hydraulic data KSLC20 KLSC25 KLSC32
Max. operating pressure 6 bar 6 bar 6 bar
Ambient temperature -2 °C to +40 °C (observe pump specifications)
Operating temperature +2 °C to +90 ° (observe pump specifications)
Gravity brake opening pressure 10 mbar 10 mbar 10 mbar
Kvs bypass 6.3 10.0 18.0
Temperature display range 0 - 120 °C 0 - 120 °C 0 - 120 °C
Temperature setting range controller 5 - 95 °C 5 - 95 °C 5 - 95 °C
Pre-setting controller 60 °C 60 °C 60 °C
Media
Water or water with glycol as per VDI (Association of German Engineers) 2035 /
ÖNORM (Austrian standard) H 5195
Electrical connection
Power supply See separate pump documentation
Dimensions KSLC20 KLSC25 KLSC32
Width x height x depth with EPP shell 240 x 310 x 217 mm 300 x 370 x 240 mm 300 x 370 x 240 mm
Centre distance 90 mm 125 mm 125 mm
Sealing surfaces distance 293 mm 342.5 mm 342.5 mm
Connections to pipe network KSLC20 KLSC25 KLSC32
Boiler (top) 1” M, flat sealing 1/2" M, flat sealing 2” M, flat sealing
Tank (bottom) 1” M, flat sealing 11/2" M, flat sealing 11/2" M, flat sealing
2 x screw fitting (top connection) - 1 1/2” union nut x 1” F 2" union nut × 11/4" F
Tightening torques for screw fittings KSLC20 KLSC25 KLSC32
3/4" 35 Nm 35 Nm 35 Nm
1" 55 Nm 55 Nm 55 Nm
11/4" - 90 Nm 90 Nm
11/2" - 130 Nm 130 Nm
2" - - 190 Nm
Materials KSLC20 KLSC25 KLSC32
Fittings CW617N CW617N CW617N
Pipes Stainless steel Ø33 mm Tubular steel Tubular steel
Plastics
impact-resistant and
temperature-resistant
impact-resistant and
temperature-resistant
impact-resistant and
temperature-resistant
Flat seals AFM 34/2 AFM 34/2 AFM 34/2
Bypass pipe CW617N CW617N CW617N
Gravity brake POM, NBR, stainless steel POM, NBR, stainless steel POM, NBR, stainless steel
O-rings EPDM EPDM EPDM
Insulation EPP EPP EPP
Retaining bracket Spring steel - -
Wall brackets Galvanised sheet steel Galvanised sheet steel Galvanised sheet steel
Circulation pump
Technical information on the circulation pumps can be found in the relevant pump documentation.
Actuator including controller
Technical information on the actuators can be found in the relevant actuator documentation.