STIEBEL ELTRON Heat pumps, Technical Manual

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HEatIng SyStEm connEctIon wpl 13/18/23 E/cool
Heating system connection
install the heat utilisation system
(wnA) 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. Check the correct
connection of the heating flow and
return. Flexible pressure hoses are
recommended to reduce structure-
borne noise on the water side. the
required circulation pump and the
pipe cross-section can be determined
from the table below. Fit thermal
insulation in accordance with local
regulations. when using the compact
installation wPKi 5, use the following
circulation pumps: see table.
Circulation pump for the heat pump with WPKI 5
(between the heat pump and the buffer cylinder; max. pipe length 10 m)
Heat pump
Flow rate
m³/h Pressure differential
hPa Circulation pump
type Copper pipe
Dn
wPl 13 e 1.5 105 UP 25 - 60 28 x 1.5
wPl 18 e 2.0 145 UP 25-80 35 x 1.5
wPl 23 e 2.8 190 UP 25-80 35 x 1.5
wPl 13 cool 1.5 105 UP 25 - 60 28 x 1.5
wPl 18 cool 2.0 145 UP 25-80 35 x 1.5
wPl 23 cool 2.8 190 UP 25-80 35 x 1.5
WPL with buffer cylinder SBP 700 and DHW heating
WPL/WPIC with SBP 700 buffer cylinder and DHW heating