30
4. Hydraulic diagram
15
Legend
1
Stainless steel heat exchanger with insulation
2
Primary pump
3
Primary mixer with rapid actuator
4
Domestic water circulation pump
5
Domestic hot water temperature sensor
6
Heating-circuit water temperature sensor (mixed)
7
Heating-circuit water temperature sensor (flow)
8
Sanitary circulation temperature sensor
9
Bleed device
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
Domestic hot water outlet
B
Heating medium supply line to the buffer tank
C
Domestic water circulation return
D
Heating medium return line to the buffer tank
E
Domestic cold water connection
Legend:
VL
- heating supply
Z
- domestic water circulation
RL
- heating return
1-5
- fresh water unit
KW
- domestic cold water
A-E
- optional zone valve DN40
(Art.-No. 66400.39)
TWW
- domestic hot water
F
- domestic water draw-off point
