5 Application guidelines
Installer reference guide
12
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA
Daikin Altherma – Low temperature split
4P495248-1 – 2017.12
▪ 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/35 and X2M/30).
▪ The space operation mode is sent to the heat pump convectors by
one digital output on the indoor unit (X2M/4 and X2M/3).
INFORMATION
When using multiple heat pump convectors, make sure
each one receives the infrared signal from the remote
controller of the heat pump convectors.
Configuration
Setting
Value
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
1 (External room thermostat):
Unit operation is decided by the
external thermostat.
Number of water temperature
zones:
▪ #: [4.4]
▪ Code: [7-02]
0 (Single zone): Main
External room thermostat for the
main
zone:
▪ #: [2.A]
▪ Code: [C-05]
1 (1 contact): 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.
Benefits
▪
Cooling.
The heat pump convector offers, besides heating
capacity, also excellent cooling capacity.
▪
Efficiency.
Optimal energy efficiency because of the interlink
function.
▪
Stylish.
Combination: Under floor h Heat pump
convectors
▪ Space heating is provided by:
▪ The under floor heating
▪ The heat pump convectors
▪ Space cooling is provided by the heat pump convectors only. The
under floor heating is shut off by the shut-off valve.
Setup
B
A
a
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/35 and X2M/30).
▪ The space operation mode is sent to the heat pump convectors by
one digital output on the indoor unit (X2M/4 and X2M/3).
Configuration
Setting
Value
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
1 (External room thermostat):
Unit operation is decided by the
external thermostat.
Number of water temperature
zones:
▪ #: [4.4]
▪ Code: [7-02]
0 (Single zone): Main
External room thermostat for the
main
zone:
▪ #: [2.A]
▪ Code: [C-05]
1 (1 contact): 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.
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.
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
T
B
C
A
a
Final English - Tanslations in progress
