Daikin Altherma 3 ECH2O - 6 Hydraulic Connection; Hydraulic System Connection

6 Hydraulic connection
Installation and maintenance instructions
34
Daikin Altherma EHS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1444099_01 – 11/2018 – 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
6 Circulation (optional)
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
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
Mi
Mixer circuit pump
P
S
Solar operating pump
P
Z
Circulation pump
RDS2
Pressure station
RoCon+ HP Indoor unit controller
EHS157068 Mixer valve controller
PWT Plate heat exchanger
SAS1 Sludge and magnetic separator
SK Solar panel field
SV Safety overpressure valve
t
AU
Outside temperature sensor
t
DHW
Storage tank temperature sensor
t
Mi
Inflow temperature sensor, mixer circuit