One Boiler + One Underfloor Heating Circuit + One Direct Circuit + One Domestic Hot Water Tank; Hydraulic Connection - DeDietrich IX 245-130 Installation, User And Service Manual

6 Connecting diagrams
6.2

One boiler + one underfloor heating circuit + one direct circuit + one domestic hot water tank

Fig.55 Boiler + 1 underfloor heating circuit + 1 direct circuit + 1 domestic hot water tank
7
167
7
1a
3
T
1
300
35
2a
30e
119
1 Boiler flow
1a Heating flow sensor
2 Direct heating circuit pump
2a Heating return
2c Three-way valve bypass
3 6 bar (0.6 MPa) safety valve
7 Automatic air vent
9 Isolation valve
16 Closed expansion vessel
18 Heating circuit fill point
(France: with disconnector according to prevailing
regulations)
24 Domestic hot water tank exchanger primary inlet
25 Domestic hot water tank exchanger primary outlet
26 DHW booster pump
27 Non-return valve
30 Calibrated and sealed safety unit
France: (7 bar (0.7 MPa) - with opening on the
discharge pipe)
30e Drain valve
31 Independent domestic hot water tank
33 Domestic hot water temperature sensor
48 IX
6.2.1
38
64
7
27
2
117
9
27
9 27
34
16

Hydraulic connection

44
65
61 S
T
27
93
2c
9
9
9 18
9
30
34 Modulating boiler pump (primary pump)
35 Low-loss header (optional)
38 Remote control with or without room temperature
sensor
44 France: 65 °C safety thermostat with manual reset
for underfloor heating (DTU 65.8, NF P52-303-1)
Austria: safety device to safeguard against
overheating: according to the type of underfloor
heating
Other countries: safety device to safeguard
against overheating of the underfloor heating, in
accordance with prevailing regulations
61 Mixed circuit flow sensor
64 Direct heating circuit (example: radiators)
65 Heating circuit with mixing valve, may be low
temperature heating circuit (underfloor heating or
radiators)
93 Heating pump for underfloor heating circuit
117 Three-way mixing valve
119 Boiler return
167 Boiler control panel
300 Heating flow
38
33
T
24
26
27
25
7702684 - v04 - 05092019
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MW-3000019-06