4. Hydraulic diagram
Legend:
VL
- heating supply
RL
- heating return
KW
- domestic cold water
TWW - domestic hot water
30
Legend
1
2
3
4
5
6
7
8
9
10 Backflow preventer
11 Flow meter
12 Fill and drain ball valve, ½" external thread
13 Shut-off ball valve
14 Controller
15 Safety group (provided by the customer)
A
B
C
15
D
E
Z
- domestic water circulation
1-5 - fresh water unit
A-E - optional zone valve DN40
F
- domestic water draw-off point
Stainless steel heat exchanger with insulation
Primary pump
Primary mixer with rapid actuator
Domestic water circulation pump
Domestic hot water temperature sensor
Heating-circuit water temperature sensor (mixed)
Heating-circuit water temperature sensor (flow)
Sanitary circulation temperature sensor
Bleed device
Domestic hot water outlet
Heating medium supply line to the buffer tank
Domestic water circulation return
Heating medium return line to the buffer tank
Domestic cold water connection
(Art.-No. 66400.39)