14 VELUX
INStRUCtIoNS FoR INStAllAtIoN AND USE
Solar Pump Units PSKR
Two-line return unit, insulated, DN 20, with solar control, air collector, fill fitting, and flow indicator.
Figure 1: overview
14
Tube connection
Ø 22
Connection,
flat sealing G 1"
22
15
13
7
10
6
5
12
2
3
11
4
10
1
12
9
8
Item/Designation:
PKSR
Pump/type:
ST 20/6
Maximum operating pressure:
6 bar
Maximum operating temperature (return):
120°C
Maximum operating temperature (flow):
140°C
Medium:
Water with a maximum propylene glycol content of 50%
Nominal diameter:
DN 20
Connections:
Flat sealing, swivel nut G1, 1¼"
Sealings:
EPDM
Casing:
GK-CuZn37Pb (2.0340.02)
Fittings:
CuZn39Pb3 (2.0401)
Insulation:
EPP foam
thermal conductivity:
0,038 W/mK
technical Specifications
