6
Hydraulic connection
Installation and maintenance instructions
34
Daikin Altherma EHS(X/H)
Daikin Altherma integrated solar unit
008.1444099_00 – 07/2018 – EN
6
Hydraulic connection
DANGER: RISK OF BURNING
High temperatures can occur in the solar storage tank.
Therefore, sufficient scalding protection must be included
when the hot water system is installed (automatic hot water
mixing device).
To avoid heat losses due to gravity flows, the devices can
be optionally equipped with plastic non-return valves.
These are suitable for maximum operating temperatures of
95 °C and for installation in all heat exchanger connections
on the storage tank side (except heat exchangers for pres-
surised solar system charging).
Suitable non-return valves must be installed in the building
for components connected to the heat exchanger for pres-
surised solar system charging.
6.1
Hydraulic system connection
INFORMATION
The system diagram below is an example and is never a
substitute for careful system planning. Please visit our
website for more diagrams.
Item
Meaning
1
Cold water distribution network
2
Hot water distribution network
3
Heating inflow
4
Heating return flow
5
Mixer circuit
7
Check valve, return valve
7a
Non-return valves
8
Solar circuit
9
Gas line
10
Liquid line
3UV DHW
3-way distribution valve (hot water/heater)
3UVB1
3-way mixer valve (heater/internal boiler circuit)
EKBUxx
Backup heater
BV
Bypass valve
C
Refrigerant compressor
CW
Cold water
DHW
Domestic hot water
DSR1
Pressurised solar system
E
Expansion valve
H
1,
H
2
… H
m
Heating circuits
MAG
Diaphragm expansion vessel
MIX
3-way mixer with drive motor
MK1
Mixer group with high-efficiency pump
MK2
Mixer group with high-efficiency pump (PWM-regulated)
P
High-efficiency pump
P
K
Boiler circuit pump
P
Mi
Mixer circuit pump
P
S
Solar operating pump
RDS2
Pressure station
RoCon+ HP
Control Daikin Altherma EHS(X/H)
PWT
Plate heat exchanger
SAS1
Sludge and magnetic separator
SK
Solar panel field
SV
Safety overpressure valve
t
AU
External temperature sensor
t
DHW
Storage tank temperature sensor
t
Mi
Inflow temperature sensor, mixer circuit
t
K
Solaris trap temperature sensor
