Multiple Rooms - One Lwt Zone - Daikin Altherma EJHA04AAV3 Installer's Reference Manual

▪ The space heating demand signal is sent to one digital input on
the gas boiler (X4/6 and X4/7).
INFORMATION
When using multiple heat pump convectors, make sure
each one receives the infrared signal from the remote
controller of the heat pump convectors.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
External room thermostat for the
main zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
Benefits
▪ Efficiency. Optimal energy efficiency because of the interlink
function.
▪ Stylish.
Combination: Under floor heating + Heat pump
convectors
▪ Space heating is provided by:
▪ The under floor heating
▪ The heat pump convectors
Setup
A Main leaving water temperature zone
B One single room
a User interface
b Remote controller of the heat pump convectors
▪ The outdoor unit is connected in series with the gas boiler.
▪ The heat pump convectors are directly connected to the gas
boiler.
▪ The desired room temperature is set via the remote controller of
the heat pump convectors.
▪ The space heating demand signal is sent to one digital input on
the gas boiler (X4/6 and X4/7).
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
EJHA04AAV3 + EHY2KOMB28+32AA
Daikin Altherma Hybrid hydrosplit heat pump
4P531180-1 – 2018.06
Value
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition.
A
B
a
b
Value
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
7 Application guidelines
Setting
External room thermostat for the
main zone:
▪ #: [A.2.2.4]
▪ Code: [C-05]
Benefits
▪ Efficiency. Under floor heating has the best performance with
Altherma LT.
▪ Comfort. The combination of the two heat emitter types provides
excellent heating comfort of the under floor heating.
7.2.2 Multiple rooms – One LWT zone
If only one leaving water temperature zone is needed because the
design leaving water temperature of all heat emitters is the same,
you do NOT need a mixing valve station (cost effective).
Example: If the heat pump system is used to heat up one floor
where all the rooms have the same heat emitters.
Under floor heating or radiators – Thermostatic
valves
If you are heating up rooms with under floor heating or radiators, a
very common way is to control the temperature of the main room by
using a thermostat (this can either be the user interface or an
external room thermostat), while the other rooms are controlled by
so-called thermostatic valves, which open or close depending on the
room temperature.
Setup
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface
▪ The outdoor unit is connected in series with the gas boiler.
▪ The under floor heating of the main room is directly connected to
the gas boiler.
▪ The room temperature of the main room is controlled by the user
interface used as thermostat.
▪ A thermostatic valve is installed before the under floor heating in
each of the other rooms.
INFORMATION
Mind situations where the main room can be heated by
another heating source. Example: Fireplaces.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Value
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition.
A
B C
T
a
Value
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Installer reference guide
19