To Connect The User Interface - Daikin Altherma Installer's Reference Manual

Backup heater Connections to
type (a) backup heater power
supply
6 kW 3N~ 400 V
F1B
(*9W)
9 kW 3N~ 400 V
L1 L2 L3 L1 L2 L3
(*9W)
(a) For configuration of the backup heater, see "8.2.2 Quick wizard:
Standard" on page 44.
Special remark for fuses:
Special remark for terminals:
As mentioned on the table above, the connections on the terminals
X6M and X7M need to be changed to configure a backup heater.
Refer to the illustration below as a caution about handling the
terminals.
2 Fix the cable with cable ties to the cable tie mountings.
3 Configure the user interface for the respective power supply.
See "8.2.2 Quick wizard: Standard" on page 44.
During connection of the backup heater, miswiring is possible. To
detect possible miswiring, it is highly recommended to measure the
resistance value of the heater elements. Depending on the different
backup heater types, following resistance values (see table below)
should be measured. ALWAYS measure the resistance on the
contactor clamps K1M, K2M, and K5M.
3 kW 6 kW
1~ 1~
230 V 230 V
K1M/1 K5M/13 52.9Ω 52.9Ω
K1M/3 ∞ ∞
ERLQ004~008CAV3 + EHBH/X04+08CA
Daikin Altherma - Low Temperature Split
4P313774-1C – 2012.11
Connections to
terminals
X6M X7M
1 2 3 4 5 6 7 8
6 kW 6 kW 9 kW
3~ 3N~ 3N~
230 V 400 V 400 V
52.9Ω ∞ ∞
∞ 105.8Ω 105.8Ω
3 kW 6 kW
1~ 1~
230 V 230 V
K1M/5 ∞ ∞
K1M/3 K1M/5 26.5Ω 26.5Ω
K2M/1 K5M/13 ∞ 26.5Ω
K2M/3 ∞ ∞
K2M/5 ∞ ∞
K2M/3 K2M/5 52.9Ω 52.9Ω
K1M/5 K2M/1 ∞ ∞
Example measure resistance between K1M/1 and K5M/13:
K1M
1 3 5 13
2 4 6 14
Ω
Ω
K5M
1 3 5 13
2 4 6 14
7.6.6

To connect the user interface

1 Connect the user interface cable to the indoor unit.
2 1
X5M
X2M
A2P A2P
a b
a User interface delivered with the unit
b Optional user interface
2 Fix the cable with cable ties to the cable tie mountings.
To fix the user interface on the unit
1 Insert a screwdriver into the slots underneath the user interface
and carefully separate the faceplate from the wallplate.
NOTICE
The PCB is mounted in the faceplate of the user interface.
Be careful NOT to damage it.
2 Fix the wallplate of the user interface to the frontplate of the
unit.
7 Installation
6 kW 6 kW 9 kW
3~ 3N~ 3N~
230 V 400 V 400 V
∞ 105.8Ω 105.8Ω
26.5Ω 105.8Ω 105.8Ω
26.5Ω ∞ ∞
∞ 52.9Ω 52.9Ω
∞ 52.9Ω 52.9Ω
52.9Ω 52.9Ω 52.9Ω
∞ ∞ ∞
K2M K2M
1 3 5 13
2 4 6 14
Installer reference guide
39