STIEBEL ELTRON Heat pumps, Technical Manual

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Heating system connection
install the heat utilisation system
(HUs) in accordance with the design
documentation. For standard heating
systems integrate the heat pump
into the water side according to
standard circuits (see appendix).
Prior to connecting the heat pump,
check the heating system for leaks,
flush it thoroughly, then fill and vent
it thoroughly. ensure the correct
connection of the heating flow and
return. the adjacent table shows the
pipe cross-section. Provide thermal
insulation in accordance with local
regulations.
Heat pumps type WPF without integral circulation pump
Heat pump Flow rate Circulation pump Copper pipe
type m³/h type mm
wPF 20 3.7 UP 40/1-8e 42 x 1.5
wPF 27 5.0 UP 40/1-8e 54 x 2.0
wPF 40 7.5 UP 40/1-8e 76 x 2.5
wPF 52 9.2 UP 40/1-8e 76 x 2.5
wPF 66 11.5 UP 50/1-12e 76 x 2.5
HEatIng SyStEm connEctIon wpf 20/27/40/52/66
WPF 20 to 66 with DHW heating and low loss header
Heat pumps type WPF without integral circulation pump
Heat pump Flow rate Circulation pump Copper pipe
type m³/h type mm
wPF 80 set 15.0 2 x UP 50/1-12e 89 x 2.9
wPF 92 set 16.7 2 x UP 50/1-12e 89 x 2.9
wPF 104 set 18.4 2 x UP 50/1-12e 89 x 2.9
wPF 118 set 20.7 2 x UP 50/1-12e Dn 125
wPF 132 set 23.5 2 x UP 50/1-12e Dn 125