Vaillant geoTHERM exclusive Operating Manual page 12

4 Equipment and functional description
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8
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6
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Fig. 4.4 Rear view
Key to Fig. 4.4
1 Hot water connection, domestic hot water cylinder
2 Cold water connection, domestic hot water cylinder
3 Heat source to the heat pump
4 Heat source from the heat pump
5 Heating return
6 Heating flow
7 Handle trough
8 Handle trough/cable grommet, electrical connection
9 Ventilation, heating flow to domestic hot water cylinder
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Operating Manual geoTHERM exclusive VWS 0020071929_00