Daikin Altherma 3 H MT W - Page 36

6 | Application guidelines
Installer reference guide
36
EPRA08~12EAV3+W1 + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634885-1 – 2021.03
▪ Efficiency. Although the external room thermostat only sends ON/OFF signals, it
is specifically designed for the heatpump system.
▪ Comfort. In case of underfloor heating, the wireless external room thermostat
prevents condensation on the floor during cooling operation by measuring the
room humidity.
Heatpump convectors
Setup
A
B
a
A Main leaving water temperature zone
B One single room
a Heat pump convectors (+ controllers)
▪ For more information about connecting the electrical wiring to the unit, see:
- "9.2Connections to the outdoor unit"[4100]
- "9.3Connections to the indoor unit"[4108]
▪ The heat pump convectors are connected as follows:
- Warm water → Indoor unit
- Cold water → Outdoor unit
▪ 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 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.