To Connect The Changeover To External Heat Source; To Connect The Power Consumption Digital Inputs; To Connect The Safety Thermostat (Normally Closed Contact) - Daikin ERGA08DAV3 Installer's Reference Manual

7.9.15 To connect the changeover to external
heat source
1 Connect the changeover to external heat source cable to the
appropriate terminals as shown in the illustration below.
N L
X2M
X1M
X4 X3 X2 X1
X2M
a
A4P
a Installation of EKRP1HB is required.
2 Fix the cable with cable ties to the cable tie mountings.
7.9.16 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.
X2M
X1M
5 3 4 1 2
X801M
a
A8P
a Installation of EKRP1AHTA is required.
2 Fix the cable with cable ties to the cable tie mountings.
7.9.17 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.
ERGA04~08DAV3(A) + EHVZ04+08S18+23DA +
EHVZ04+08S18+23DJ
Daikin Altherma 3 R F
4P495249-1B – 2019.06
2 Fix the cable with cable ties to the cable tie mountings.
X5M
A5P
Additional zone
3 Connect the safety thermostat (normally closed) cable to the
4 Fix the cable with cable ties to the cable tie mountings.
X5M
A5P
X2M
X1M
1 2
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.
appropriate terminals as shown in the illustration below.
X2M
X1M
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
After it is installed, do NOT forget to configure the safety
thermostat for the additional zone. 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.
7 Installation
X5M
9 10
X5M
Installer reference guide
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