110
Aquarea air / water heat pump – design handbook 07 / 2014
Example 6
Hydraulic isolation of the heating circuits by means of a heat exchanger
CLOSE
OPEN
N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
CLOSE
OPEN
CLOSE
OPEN
N
COOL
HEAT
N
L
N
M
M
M
1
2
4
5
7
6
3
min
.
50
l
Schematic illustration – relevant standards and
guidelines must be observed!
1
Cold water connection
2
Room thermostat
3
Outside temperature sensor (integrated in the outdoor unit)
4
Control for heating circuit mixer (building side)
6
2-way directional valve
(heating mode = open,
cooling mode = closed)
5
Hot water tank
7
Heat
exchanger
Vessel for increasing the total water volume - to be used
when the total volume is lower than the minimum volume.