5 Application guidelines
Installer reference guide
13
ERLQ004~008CA + 08S18CA3VF
Daikin Altherma low temperature split
4P3662261 – 2014.01
▪ 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 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
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [702]
0 (1 LWT zone): Main
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 h Heat pump
convectors
Setup
b
B
C
A
a
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: A shutoff valve (field
supply) is installed before the under floor heating. It prevents hot
water supply when the room has no heating demand.
▪ 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
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C07]
0 (LWT control): Unit operation is
decided based on the leaving
water temperature.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [702]
0 (1 LWT zone): Main
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
▪ 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) the leaving water temperature when
the additional zone has demand.
Typical example:
Room (zone)
Heat emitters: Design
temperature
Living room (main zone)
Under floor heating: 35°C
Bed rooms (additional zone)
Heat pump convectors: 45°C
Setup
B
A
a
a
C
E
D
b
c
d
A
Additional leaving water temperature zone
B
Room 1
C
Room 2
D
Main leaving water temperature zone
E
Room 3
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