Daikin Altherma 3 ECH2O, Installation And Maintenance Instructions Manual

5 

Start-up

Installation and maintenance instructions

30

Daikin Altherma EHS(X/H)(B)-D

Heat pump (indoor unit) with integrated heat accumulator

008.1444099_01 – 11/2018 – EN

5

Start-up

WARNING

An improperly started-up indoor unit can endanger human
life and health and affect its function.

▪ The commissioning of the indoor unit may only be car-

ried out by heating specialists authorised and trained by
the gas or energy supply company.

CAUTION

If the indoor unit is not started up properly, it could lead to
material or environmental damage.

▪ Observe the information concerning water quality in ac-

cordance with 

Chap. 1.2.5

.

▪ During operation of the system, the water pressure must

be checked at regular intervals on the building-side
manometer (green range) or by querying the controller
(see accompanying controller manual). If necessary,
correct the pressure by topping up with water.

INFORMATION

If the outdoor unit has been disconnected from the power
supply for an extended period of time or the indoor unit
was operated before the outdoor unit for an extended
period of time, the indoor unit must be restarted to estab-
lish communication between the units. Without communic-
ation, the outdoor unit is not used to generate heat.

Incorrect commissioning voids the manufacturer's guarantee for the
device. If you have questions, please contact our Technical Cus-
tomer Service.

5.1

Initial commissioning

Once the indoor unit has been installed and fully connected, it must
be adapted once to the installation environment by expert personnel
(configuration).

After this configuration is complete, the system is ready for operation
and the operator can make additional individual settings on it.

The heating technician must instruct the user, draw up the start-up
log and complete the operating manual.

The settings of optional components such as a room thermostat or
solar system must be carried out on the respective components.

5.1.1

Requirements

▪ The indoor unit is fully connected.

▪ The refrigerant system is dehumidified and filled with the specified

amount of refrigerant.

▪ The heating and hot water system has been filled and pressurised

to the correct pressure (see 

Chap. 7.2.2

).

▪ The storage tank is filled up to the overflow (see 

Chap. 7.2.1

).

▪ Optional accessories have been installed and connected up.

▪ The heating system's control valves are open.

5.1.2

Starting the unit and start-up

INFORMATION

Please observe the operating instructions of the RoCon+
HP controller.

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].

5.1.3

Bleeding the hydraulic system

▪ Make sure that the automatic vent valve cap is open (item A).

Fig. 5-1

Automatic vent valve

▪ Provide the manual vent valve (item B) with a hose and direct it

away from the unit. Open the valve until water emerges.

▪ Fit the second manual vent valve (item C) with a hose and open it

until water emerges.

▪ Activate the ventilation function (see RoCon+ HP operating in-

structions).

By activating the ventilation function, the RoCon+ HP controller
starts a permanently defined sequence program with start/stop oper-
ation of the integrated heating circulation pump and various settings
of the 3-way switch valves integrated in the indoor unit.

During the ventilation function, any air present can escape via the
automatic vent valve and the hydraulic circuit connected to the in-
door unit is evacuated.