Viega 1252.1, Instructions For Use Manual

Page: 7 / 11

2.2.2 Technical data
Maximum permitted operating
temperature 95 °C
Minimum permitted operating
temperature
-20 °C 1)
Maximum permitted operating
pressure 1 MPa (10 bar)
Nominal heating capacity 15 kW
1) with anti-freeze added, max. 40 % per cent by volume.
With fluid temperatures below 20 °C, take potential condensation into
consideration. Furthermore, use suitable cooling media if the tempera-
ture of the media drops below the water freezing point.
Materials
Fittings Pressed brass Ms 58
Pipe runs Precision pipes
Thermal insulation shell EPP
Handles Fibre-glass reinforced, tempera-
ture-resistant plastics
O-rings EPDM elastomers
Flat seals AFM 34 or EPDM elastomers
Valve seats PTFE
Product information
Compact control station preset value 7 from 11