Daikin Altherma 3 H F - To Connect the Power Consumption Digital Inputs; To Connect the Safety Thermostat (Normally Closed Contact); After Connecting the Electrical Wiring to the Indoor Unit

6 Electrical installation
Installation manual
15
EAVZ16S18+23DA6V(7)+9W
Daikin Altherma 3 H F
4P556073-1A – 2021.09
X1M
X2M
X5M
A5P
A4P
X1M
YC Y1 Y2 Y3 Y4
X2 X1
X2M
X4 X3
N L
a
a Installation of EKRP1HBAA is required.
2 Fix the cable with cable ties to the cable tie mountings.
6.3.11 To connect the power consumption digital
inputs
1 Connect the power consumption digital inputs cable to the
appropriate terminals as shown in the illustration below.
X1M
X2M
X5M
A8P
A5P
12345
X801M
S6S S7S S8S S9S
a
a Installation of EKRP1AHTA is required.
2 Fix the cable with cable ties to the cable tie mountings.
6.3.12 To connect the safety thermostat
(normally closed contact)
Main zone
1 Connect the safety thermostat (normally closed) cable to the
appropriate terminals as shown in the illustration below.
X1M
X2M
X5M
1 2
2 Fix the cable with cable ties to the cable tie mountings.
INFORMATION
Installation of a safety thermostat (field supply) is required
for the main zone, otherwise the unit will NOT operate.
NOTICE
A safety thermostat MUST be installed on the main zone to
avoid too high water temperatures in this zone. The safety
thermostat is typically a thermostatically controlled valve
with a normally closed contact. When the water
temperature in the main zone is too high, the contact will
open and the user interface will show a 8H‑02 error. ONLY
the main pump will stop.
Additional zone
3 Connect the safety thermostat (normally closed) cable to the
appropriate terminals as shown in the illustration below.
X1M
X2M
X5M
9 10
4 Fix the cable with cable ties to the cable tie mountings.
NOTICE
Make sure to select and install the safety thermostat for the
additional zone according to the applicable legislation.
In any case, to prevent unnecessary tripping of the safety
thermostat, we recommend the following:
▪ The safety thermostat is automatically resettable.
▪ The safety thermostat has a maximum temperature
variation rate of 2°C/min.
▪ There is a minimum distance of 2m between the safety
thermostat and the 3‑way valve.
INFORMATION
ALWAYS configure the safety thermostat for the additional
zone after it is installed. Without configuration, the indoor
unit will ignore the safety thermostat contact.
INFORMATION
The preferential kWh rate power supply contact is
connected to the same terminals (X5M/9+10) as the safety
thermostat for the additional zone. It is only possible for the
system to have EITHER preferential kWh rate power
supply OR a safety thermostat for the additional zone.
6.4 After connecting the electrical
wiring to the indoor unit
To prevent water ingress to the switch box, seal the low voltage
wiring intake using the sealing tape (delivered as accessory).
Without low voltage cables With low voltage cables