7 Inspection and maintenance
Installation and maintenance instructions
38
Daikin Altherma EHS(X/H)(B)-D
Heat pump (indoor unit) with integrated heat accumulator
008.1444099_01 – 11/2018 – EN
INFORMATION
If the storage tank temperature falls below specific min-
imum values, the safety settings of the indoor unit prevent
the heat pump from being operated at low outside temper-
atures
- Outside temperature <-2°C, minimum storage tank tem-
perature = 30°C
- Outside temperature <12°C, minimum storage tank tem-
perature = 23°C
Without backup heater:
The storage tank water must be heated to the required
minimum storage tank temperature with an external heater
booster.
With backup heater (EKBUxx):
At an outside temperature of <12°C and a storage tank
temperature of <35°C, the backup heater (EKBUxx) is
automatically switched on to heat the storage tank water to
at least 35°C.
▪ To accelerate the heating process with backup heater,
temporarily set the [Config. of external heat source]
parameter = "1" and the [Ext. hot water power] para-
meter to the maximum value of the backup heater
[→Main menu →Settings →Ext. source].
▪ In the [User] menu, select and switch on the [1x Hot Wa-
ter] parameter. After heating, switch the parameter off
again [→Main menu →User →1x load].
Without installed solar system
1 Connect the filling hose with non-return valve (1/2") to the
"Solar - inflow" connection (Fig. 7-1, item 1).
2 Fill the storage tank of the indoor unit until water escapes at
the overflow connection (Fig. 7-1, item 23).
3 Remove the filling hose with non-return valve (1/2").
With installed solar system
1 Install the filling connection with combined filling and draining
valve (accessory KFE BA) following the solar control and pump
unit (EKSRPS4).
2 Connect the filling hose with non-return valve (1/2") to the pre-
viously installed combined filling and draining valve.
3 Fill the storage tank of the indoor unit until water escapes at
the overflow connection (Fig. 7-1, item 23).
4 Remove the filling hose with non-return valve (1/2").
Fig.7-1 Filling the buffer tank - without connected DrainBack
solar system
Item Designation
1
Solar - inflow
23 Safety overflow
Tab.7-1
7.2.2 Filling, topping up the heating system
DANGER: RISK OF ELECTROCUTION
During the filling process, water can escape from any leak-
ing points and can cause an electric shock if it comes into
contact with live parts.
▪ Before the filling process, de-energise the indoor unit.
▪ After the first filling and before switching on the indoor
unit at the mains switch, check that all electric parts and
connection points are dry.
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