Multiple Rooms - One Lwt Zone - Daikin ERHQ011BA Installer's Reference Manual

5 Application guidelines
Setup
A
B
M1
A Main leaving water temperature zone
B One single room
a Remote controller of the heat pump convectors
The heat pump convectors are directly connected to the indoor
unit.
A shut-off valve (field supply) is installed before the under floor
heating to prevent condensation on the floor during cooling
operation.
The desired room temperature is set via the remote controller of
the heat pump convectors.
The space heating/cooling demand signal is sent to one digital
input on the indoor unit (X2M/1 and X2M/4)
The space operation mode is sent by one digital output (X2M/33
and X2M/34) on the indoor unit to:
The heat pump convectors
The shut-off valve
Configuration
Setting
Unit temperature control:
#: [A.2.1.7]
Code: [C-07]
Number of water temperature
zones:
#: [A.2.1.8]
Code: [7-02]
External room thermostat for the
main zone:
#: [A.2.2.4]
Code: [C-05]
Benefits
Cooling. Heat pump convectors provide, besides heating
capacity, also excellent cooling capacity.
Efficiency. Under floor heating has the best performance with
Altherma LT.
Comfort. The combination of the two heat emitter types
provides:
The excellent heating comfort of the under floor heating
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.
Installer reference guide
9
a
Value
1 (Ext RT control): Unit operation
is decided by the external
thermostat.
0 (1 LWT zone): Main
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.
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
B
A Main leaving water temperature zone
B Room 1
C Room 2
a User interface
The under floor heating of the main room is directly connected to
the indoor unit.
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.
NOTICE
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]
Number of water temperature
zones:
#: [A.2.1.8]
Code: [7-02]
Benefits
Cost effective.
Easy. Same installation as for one room, but with thermostatic
valves.
C
T
a
Value
2 (RT control): Unit operation is
decided based on the ambient
temperature of the user interface.
0 (1 LWT zone): Main
EHBH/X16
Daikin Altherma - Low Temperature Split
4P313776-1 – 2012.05