5 Application guidelines
Installer reference guide
14
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1D – 2018.07
Benefits
▪
Cost effective.
You do NOT need an additional external room
thermostat.
▪
Easy
. Same installation as for one room, but with thermostatic
valves.
Under floor heating or radiators – Multiple external
room thermostats
Setup
M2
M1
B
C
A
a
a
b
A
Main leaving water temperature zone
B
Room 1
C
Room 2
a
External room thermostat
b
Bypass valve
▪ For each room, a shut-off valve (field supplied) is installed to avoid
leaving water supply when there is no heating or cooling demand.
▪ A bypass valve must be installed to make water recirculation
possible when all shut-off valves are closed. To guarantee reliable
operation, provide a minimum water flow as described in table "To
check the water volume and flow rate" in
.
▪ The user interface connected to the indoor unit decides the space
operation mode. Mind that the operation mode on each room
thermostat must be set to match the indoor unit.
▪ The room thermostats are connected to the shut-off valves, but do
NOT have to be connected to the indoor unit. The indoor unit will
supply leaving water all the time, with the possibility to program a
leaving water schedule.
Configuration
Setting
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
0 (LWT control): Unit operation is
decided based on the leaving
water temperature.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
0 (1 LWT zone): Main
Benefits
Compared with under floor heating or radiators for one room:
▪
Comfort.
You can set the desired room temperature, including
schedules, for each room via the room thermostats.
Heat pump convectors – Multiple rooms
Setup
B
A
a
a
C
A
Main leaving water temperature zone
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
Value
Unit temperature control:
▪ #: [A.2.1.7]
▪ Code: [C-07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
▪ #: [A.2.1.8]
▪ Code: [7-02]
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 – Multiple rooms
Setup
b
B
C
A
a
M1
M1
Summary of Contents for Altherma EHVH/X04S18CB
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