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Installation manual

EKHBRD011~Y1

Indoor unit for air to water heat pump system

4PW60970-1B

■

[b-03]

Set point: storage temperature (see figure above) only

valid when [b-02]=0.

■

[b-04]

Automatic maximum domestic hot water storage

temperature: default = 70°C.

[C] Leaving water temperature limits

To prevent misuse concerning leaving water temperatures, it is
possible to limit the set points.

■

[C-00]

Set point: leaving water maximum temperature

■

[C-01]

Set point: leaving water minimum temperature

[d] Domestic water heating retention times

The heat pump can only work in either space heating operation or
domestic water heating operation. No simultaneous operation is
possible, except when using multiple set point control (see chapter

"Multiple set point control" on page 28

for more information).

■

[d-00]

Set point: minimum operation time for domestic water

heating

■

[d-01]

Set point: maximum operation time for domestic water

heating

■

[d-02]

Set point: interval minimum stop time of domestic water

heating

Changing the timer values can have an impact on space heating and
domestic water heating heat up timers. The default values are
proposed but can be changed depending on the complete system
installation.

For a detailed explanation about simultaneous request of space
heating and domestic water heating, see chapter

"Simultaneous

demand of space heating and domestic water heating" on page 25

[E] Service mode

■

[E-00]

Vacuum, recovery, charging mode

When recovering/vacuuming of the indoor unit is needed, field
setting [E-00] must be activated. It will force the unit into thermo
OFF and will open the expansion valve of the indoor unit R134a
circuit so full vacuuming is possible.

By default [E-00]=0, set to 1 to enable the vacuum mode.

■

[E-04]

Pump only operation

When commissioning and installing the unit it is very important
to get all air out of the water circuit.

Through this field setting the pump can be operated without
actual operation of the unit. By doing so this will enhance the air
removal from the circuit. The pump can operate at different
speed:

■

[E-04]=0 normal operation of the unit (default)

■

[E-04]=1 low pump speed operation

■

[E-04]=2 high pump speed operation

If you select [E-04]=1 or 2 and [6-00]=1, the unit will activate
the domestic hot water 3-way valve. This function is a helpful
feature to get all air removed out of the system (as well in
space heating as in domestic hot water heating).

See chapter

"Final check" on page 33

for more information.

Simultaneous demand of space heating and domestic
water heating

Remote controller leaving water temperature control

When the reheat temperature is reached, the further heat up till
storage temperature of the domestic hot water tank will be decided
by the running timers which are programmed by the installer.

Reheat operation

When requesting space heating and domestic water heating
(reheat) at the same time, the domestic water will be heated till
maximum reheat temperature, then space heating will start
again.

NOTE

If weather dependent domestic water heating is
enabled [b-02], the storage temperature will be
set automatically and the field setting [b-03] will
be of no importance.

NOTE

■

Do not forget to restore the field setting
[E-00] to the default value when vacuuming
is finished!

■

When [E-00] is set to 1 (recovery mode),
[E-04] can be set to 2 to enhance recovery of
the refrigerant.

[E-04]=1 or 2

▼

Pump operation of 20 minutes
3-way valve in space heating mode

if [6-00]=1

▼

Pump operation of 10 minutes
3-way valve in domestic hot water heating mode

NOTE