5
2.2 Water
Circuit
The water circuits of the HPWH are dependent on the specific type (with or without internal heat exchanger). They
have to be field-installed.
The water connections (Fig. 1) are located at the rear of the unit.
➨
Note !
- Circulation line
From an energy-efficiency point of view, the provision of a circulation line should be dispensed with, if possible.
If a circulation line for the hot water distribution system is connected, it must be fitted with a valve or similar
device enabling it to be shut off to avoid any unnecessary loss of energy. Enabling the circulation is effected as
required (time or on-demand control).
- Condensate drain: note section "Connection of Condensate Line".
Fig. 1: Water connections
(
*
unique to HPWH with internal tubular heat exchanger )
(Leitungseinführungen
für Anschluß zweiter
Wärmeerzeuger)
Warmwasserauslauf
R1" Außengewinde
Kondesatschlauch-
ausführung
Zirkulationsleitung
R 3/4" Außengewinde
Heizwasservorlauf
R1" Außengewinde
Heizwasserrücklauf
R1" Außengewinde
Kaltwasserzulauf
R1" Außengewinde
20 - 35
0
220
55
ca. 50
720
918
Ø
160
Ø
160
1226
1620
1660
660
950
*
*
*
(Cable entries for
connection of suppl.
heat source)
Hot water outlet
external thread R1”
Condensate hose
leadthrough
Circulation line
external thread
R3/4”
Hot water flow
external thread R1”
Hot water return
external thread R1”
Cold water inlet
external thread R1”
