Filling, Topping Up The Heating System - Daikin Altherma 3 ECH2O Installation And Maintenance Instructions Manual

7 Inspection and maintenance
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
2 Fill the storage tank of the indoor unit until water escapes at
the overflow connection (Fig.
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.
4 Remove the filling hose with non-return valve (1/2").
Installation and maintenance instructions
38
(Fig. 7-1, item 1).
7-1, item 23).
7-1, item 23).
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.
Heat pump (indoor unit) with integrated heat accumulator
Daikin Altherma EHS(X/H)(B)-D
008.1444099_01 – 11/2018 – EN