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Aquarea air/water heat pump – Installation manual for monobloc and split systems C, D and E series 05 / 2014
6
Hydraulic
installation
Hydraulic installation for monobloc systems
Legend
M
3-way directional valve/
3-way mixer
Drain funnel
Shutoff valve
Pressure-reducing valve
min.
50
l
Storage tank
for minimum volume
Manometer
Pump
Non-return valve
Dirt trap
Pressure relief valve
Temperature sensor
Thermostatic radiator valve /
Single room controller valve
Overflow valve
Water tapping point
Return
Supply
Control wire
Sample hydraulic installation with water heating and heating system (see Aquarea design handbook for other examples)
1
Cold water connection
2
Room thermostat
3
Outside temperature sensor
(integrated in outdoor unit)
4
Heating circuit mixer closed-loop control
(to be provided by customer)
5
Hot-water tank WH-TD20B3E5
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
HEA
T
N
L
N
M
M
1
2
3
4
5
min.
50
l
Schematic diag
ram – the rele
vant standards
and directiv
es m
ust be obser
ved!
Description of the functions of the sample hydraulic installation with water heating and heating
The hot-water tank
5
is supplied with heat as an alternative to the heating circuits . For this purpose, the heat
pump controller opens the three-way directional valve towards the hot-water tank . Then, the hot-water tank is
charged to the target temperature with appropriate supply temperature .
In heating mode, the heat pump controller opens the three-way directional valve towards the heating circuits
and supplies
them with heat . The supply temperature is controlled based on the outside temperature
3
and
corresponds to the required temperature of the hottest heating circuit for mixed heating circuits . Heating cir-
cuits with lower supply temperatures must be adjusted to the right temperature using heating circuit mixers
4
(to be provided by the customer) by adding return heating water . A room thermostat
2
(to be provided by
customer) deactivates heating mode of the heat pump when it reaches the target room temperature and pre-
vents further activation and deactivation of the heat pump . An overflow valve between the supply and return
pipes ensures that the minimum volume flow of the heat pump is guaranteed, even with thermostatic radiator
valves and heating circuit mixers .
Vessel for increasing the total water volume -
to be used when the total volume is lower
than the minimum volume .
