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5 Application guidelines
B Room 1
C Room 2
a Remote controller of the heat pump convectors
▪ The desired room temperature is set via the remote controller of
the heat pump convectors.
▪ The user interface connected to the indoor unit decides the space
operation mode.
▪ The heating or cooling demand signals of each heat pump
convector are connected in parallel to the digital input on the
indoor unit (X2M/1 and X2M/4). The indoor unit will only supply
leaving water temperature when there is an actual demand.
INFORMATION
To increase comfort and performance, Daikin recommends
to install the valve kit option EKVKHPC on each heat pump
convector.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
Benefits
Compared with heat pump convectors for one room:
▪ Comfort. You can set the desired room temperature, including
schedules, for each room via the remote controller of the
heat pump convectors.
Combination: Under floor heating + Heat pump
convectors
Setup
A
B
M1
M1
A Main leaving water temperature zone
B Room 1
C Room 2
a External room thermostat
b Remote controller of the heat pump convectors
▪ For each room with heat pump convectors: The heat pump
convectors are directly connected to the indoor unit.
▪ For each room with under floor heating: Two shut-off valves (field
supply) are installed before the under floor heating:
▪ A shut-off valve to prevent hot water supply when the room has
no heating demand
▪ A shut-off valve to prevent condensation on the floor during
cooling operation of the rooms with heat pump convectors
Installer reference guide
12
Value
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
0 (1 LWT zone): Main
C
b
a
▪ For each room with heat pump convectors: The desired room
temperature is set via the remote controller of the heat pump
convectors.
▪ For each room with under floor heating: The desired room
temperature is set via the external room thermostat (wired or
wireless).
▪ The user interface connected to the indoor unit decides the space
operation mode. Mind that the operation mode on each external
room thermostat and remote controller of the heat pump
convectors must be set to match the indoor unit.
INFORMATION
To increase comfort and performance, Daikin recommends
to install the valve kit option EKVKHPC on each heat pump
convector.
Configuration
Setting
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
5.2.3
Multiple rooms – Two LWT zones
If the heat emitters selected for each room are designed for different
leaving water temperatures, you can use different leaving water
temperature zones (maximum 2).
In this document:
▪ Main zone = Zone with the lowest design temperature in heating,
and the highest design temperature in cooling
▪ Additional zone = The other zone
CAUTION
When there is more than one leaving water zone, you must
always install a mixing valve station in the main zone to
decrease (in heating)/increase (in cooling) the leaving
water temperature when the additional zone has demand.
Typical example:
Room (zone)
Living room (main zone)
Bed rooms (additional zone)
ERLQ004~008CAV3 + EHVH/X04+08S18CA + EHVH/X08S26CA
Value
0 (LWT control): Unit operation is
decided based on the leaving
water temperature.
0 (1 LWT zone): Main
Heat emitters: Design
temperature
Under floor heating:
▪ In heating: 35°C
▪ In
cooling:
20°C
(only
refreshment, no real cooling
allowed)
Heat pump convectors:
▪ In heating: 45°C
▪ In cooling: 12°C
Daikin Altherma - Low Temperature Split
4P313775-1C – 2012.11
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