5
Start-up
Installation and maintenance instructions
31
Daikin Altherma EHS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1444099_01 – 11/2018 – EN
INFORMATION
The activation of this function does not replace correct
venting of the heating circuit.
The heating circuit must be completely full before activat-
ing this function.
▪ Check the water pressure and replenish water if necessary
(see
Chap. 7.2.2
).
▪ Repeat the ventilation, checking and replenishing process until:
▪ it is completely vented.
▪ there is sufficient water pressure.
Fig. 5-2
Manual vent valves
5.1.4
Checking the minimum flow
The minimum flow must be checked with the heating circuit closed.
INFORMATION
If the minimum flow is too low, an error message may ap-
pear and the heating system may shut down.
If the minimum flow rate is not sufficient, there may be air
in the circulation pump or the valve drive of the 3-way
switching valves (3UVB1 / 3UV DHW) is defective.
▪ Vent the circulation pump.
▪ Check the function of the valve drives; replace the valve
drive if necessary.
▪ Close the valves and adjuster drives of all connected heat distribu-
tion circuits.
▪ Set the "Heating" operating mode of the indoor unit controller
[→ Main menu → Operating mode].
▪ Read the [Current volume flow] information parameter [→ Main
menu → Information → Values].
▪ The flow rate must be at least 480 l/h (see Controller operating
instructions).
INFORMATION
The indoor unit controller constantly monitors the flow rate
of the internal heat generator circuit. Different minimum
flow rate values are required depending on the active oper-
ating mode:
"Heating" operating mode: 480 l/h
"Cooling" operating mode: 660 l/h
Automatic thawing function (Defrost) active: 780 l/h
If an error message regarding an inadequate minimum flow
is displayed at a flow rate of more than 480 l/h, check the
actual flow rate in the active operating mode and eliminate
possible fault causes.
5.1.5
Setting the screed program parameter
(only as required)
In the screed program, the inflow temperature is controlled according
to a pre-set temperature profile.
See the Controller operating instructions for further information on
the screed program, its activation and sequence.
After the screed program has ended, the RoCon+ HP control unit
continues to work in the previously set operating mode. If not con-
figured beforehand, the following finishing work is necessary.
1
On connection without room station EHS157034:
–
Set the heating characteristic curve or required inflow tem-
perature.
2
On connection with room station EHS157034:
–
Activate the room station.
–
Set the heating characteristic curve or required inflow tem-
perature. If necessary, activate the [Room Influence] para-
meter [→ Main menu → Configuration → Heating ] and set
the target room temperature.
Summary of Contents for Altherma 3 ECH2O
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