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Aquarea air/water heat pump – Installation manual for monobloc and split systems C, D and E series 05 / 2014
Installation of heating and refrigeration circuits for split systems
Connecting the water pipes to the hydro module
7.1 Connecting the water pipes to the hydro module
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 circuits
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 cus-
tomer) deactivates heating mode of the heat pump when it reaches the target room temperature and prevents
further activation and deactivation of the heat pump . An overflow valve between the supply and return pipes en-
sures that the minimum volume flow of the heat pump is guaranteed, even with thermostatic radiator valves and
heating circuit mixers .
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
HE
AT
N
L
N
M
M
1
2
3
4
5
min.
50
l
1
Cold w
ater connection
2
Room ther
mostat
3
Outside temper
ature sensor
(integ
rated in outdoor unit)
4
Heating circuit mix
er
closed-loop control (on-site)
5
Hot-w
ater
tank
WH-TD20B3E5
Schematic diag
ram – the
rele
vant standards
and
directiv
es m
ust be obser
ved!
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)
Vessel for increasing the total water volume -
to be used when the total volume is lower
than the minimum volume .
