Multiple Rooms - One Lwt Zone - Daikin Altherma 3 H HT F Series Installer's Reference Manual

5 | Application guidelines
5.2.2 Multiple rooms – One LWT zone
Installer reference guide
32
▪ For more information about connecting the electrical wiring to the unit, see:
- "8.2 Connections to the outdoor
- "8.3 Connections to the indoor
▪ The heat pump convectors are directly connected to the indoor unit.
▪ A shut-off valve (field supply) is installed before the underfloor heating to
prevent condensation on the floor during cooling operation.
▪ The desired room temperature is set via the controller of the heat pump
convectors. There are different controllers and setups possible for the heat pump
convectors. For more information, see:
- The installation manual of the heat pump convectors
- The installation manual of the heat pump convector options
- The addendum book for optional equipment
▪ 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 by one digital output (X2M/4 and X2M/3) on
the indoor unit to:
- The heat pump convectors
- The shut-off valve
Configuration
Setting
Unit temperature control:
▪ #: [2.9]
▪ Code: [C-07]
Number of water temperature zones:
▪ #: [4.4]
▪ Code: [7-02]
External room thermostat for the main
zone:
▪ #: [2.A]
▪ Code: [C-05]
Benefits
▪ Cooling. Heat pump convectors provide, besides heating capacity, also excellent
cooling capacity.
▪ Efficiency. Underfloor heating has the best performance with the heat pump
system.
▪ Comfort. The combination of the two heat emitter types provides:
- The excellent heating comfort of the underfloor heating
- The excellent cooling comfort of the heat pump convectors
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).
4
unit" [ 92]
4
unit" [ 99]
1 (External room thermostat):
Unit operation is decided by the
external thermostat.
0 (Single zone): Main
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.
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Value
Daikin Altherma 3 H HT F
4P587502-1 – 2019.07