Installer reference guide
9
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05
5 Application guidelines
Setup
Q
The heat pump convectors are directly connected to the indoor
unit.
Q
A shut-off valve (field supply) is installed before the under floor
heating to prevent condensation on the floor during cooling
operation.
Q
The desired room temperature is set via the remote controller of
the heat pump convectors.
Q
The space heating/cooling demand signal is sent to one digital
input on the indoor unit (X2M/1 and X2M/4)
Q
The space operation mode is sent by one digital output (X2M/33
and X2M/34) on the indoor unit to:
Q
The heat pump convectors
Q
The shut-off valve
Configuration
Benefits
Q
Cooling
.
Heat pump convectors provide, besides heating
capacity, also excellent cooling capacity.
Q
Efficiency
. Under floor heating has the best performance with
Altherma LT.
Q
Comfort
.
The combination of the two heat emitter types
provides:
Q
The excellent heating comfort of the under floor heating
Q
The excellent cooling comfort of the heat pump convectors
5.2.2 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
Q
The under floor heating of the main room is directly connected to
the indoor unit.
Q
The room temperature of the main room is controlled by the user
interface used as thermostat.
Q
A thermostatic valve is installed before the under floor heating in
each of the other rooms.
Configuration
Benefits
Q
Cost effective
.
Q
Easy
. Same installation as for one room, but with thermostatic
valves.
A
Main leaving water temperature zone
B
One single room
a
Remote controller of the heat pump convectors
Setting
Value
Unit temperature control:
Q
#: [A.2.1.7]
Q
Code: [C-07]
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
Number of water temperature
zones:
Q
#: [A.2.1.8]
Q
Code: [7-02]
0 (1 LWT zone): Main
External room thermostat for the
main
zone:
Q
#: [A.2.2.4]
Q
Code: [C-05]
1 (Thermo ON/OFF): When the
used external room thermostat or
heat pump convector can only
send a thermo ON/OFF
condition. No separation
between heating or cooling
demand.
B
A
a
M1
A
Main leaving water temperature zone
B
Room 1
C
Room 2
a
User interface
NOTICE
Mind situations where the main room can be heated by
another heating source. Example: Fireplaces.
Setting
Value
Unit temperature control:
Q
#: [A.2.1.7]
Q
Code: [C-07]
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
Number of water temperature
zones:
Q
#: [A.2.1.8]
Q
Code: [7-02]
0 (1 LWT zone): Main
T
B
C
A
a
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