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Configuration
Setup
System Configuration
System Configuration
Power DHW
BUH s1 power
Setup
Language
Date
Fig.
5-2
Setting the commissioning parameters
5
x
Start-up
Installation and maintenance instructions
34
Daikin Altherma M ECH
2
O
Solar storage tank with heating controller
008.1446799_00 – 07/2019 – EN
5.1.4 Bleeding the hydraulic system
If the storage tank temperature falls below specific
minimum values, the Daikin Altherma M ECH
2
O's
safety settings prevent the heat pump from being
operated at low outside temperatures:
–
Outside temperature < -2
°C
, minimum
storage tank
temperature = 30
°C
–
Outside temperature <
12
°C
, minimum
storage tank
temperature = 23
°C
.
Without backup heater:
The storage tank water must be heated to the required mini-
mum storage tank temperature with an external heater booster.
With backup heater (EKBUxx):
At an outside temperature of <
12
°C and a storage tank tem-
perature of <
35
°C, the backup heater (EKBUxx) is automati-
cally switched on to heat the storage tank water to at least
35
°C.
●
To
speed up
the
heating process with backup heater
,
temporarily
set
– parameter
[Function Heating Rod]
= "1" and
– parameter
[Power DHW]
to the
maximum value of the
backup heater
.
– Set the rotary switch to
operating mode, and set
the parameter [1x Hot Water] to "On". After heating, set
the parameter to "Off" again.
●
Make sure that the automatic vent valve cap is open (fig.
5-3,
item
A).
Fig.
5-3
Automatic vent valve cap
●
Provide the manual vent valve (fig.
5-4, item
B) with a hose
and direct it away from the unit. Open the valve until water
comes out.
●
Fit the second manual vent valve (fig.
C) with a hose
and open it until water emerges.
●
Activate air purge (see FA RoCon
mb).
By activating the air purge, the RoCon
mb controller starts a per-
manently defined sequence program with start/stop operation of
the integrated heating circulation pump and various settings of
the 3-way switch valves integrated in the Daikin Altherma M
ECH
2
O.
Any air present can escape via the automatic vent valve during
the air purge and the hydraulic circuit connected to the Daikin
Altherma M ECH
2
O is evacuated.
The activation of this function does not replace correct
venting of the heating circuit.
The heating circuit must be completely full before acti-
vating this function.
●
Check the water pressure and replenish water if necessary
(see chap.
●
Repeat the venting, checking and replenishing process until:
a)
It is completely vented.
b)
There is sufficient water pressure.