Daikin Altherma EHVH/X04S18CB Installer's Reference Manual page 43

(b) This equipment complies with EN/IEC 61000‑3‑11
(European/International Technical Standard setting the
limits for voltage changes, voltage fluctuations and flicker in
public low-voltage supply systems for equipment with rated
current ≤75 A) provided that the system impedance Z
less than or equal to Z
user's supply and the public system. It is the responsibility
of the installer or user of the equipment to ensure, by
consultation with the distribution network operator if
necessary, that the equipment is connected only to a
supply with a system impedance Z
Z .
max
1 Connect the backup heater power supply. For *3V models, a
double‑pole fuse is used for F1B. For *9W models, a 4‑pole
fuse is used for F1B.
2 If required, modify the connections on terminals X6M and X7M.
Backup heater Connections to
type backup heater power
supply
F1B
3 kW 1~ 230 V
(*3V)
L N L N
F1B
3 kW 1~ 230 V
(*9W)
L L N N
6 kW 1~ 230 V
(*9W)
F1B
6 kW 3~ 230 V
(*9W)
L1 L2 L3 L1 L2 L3
F1B
6 kW 3N~ 400 V
(*9W)
L1 L2 L3 L1 L2 L3
9 kW 3N~ 400 V
(*9W)
Special remark for fuses:
ERLQ004~008CA + EHVH/X04+08S18+26CB
Daikin Altherma – Low temperature split
4P384973-1D – 2018.07
is
sys
at the interface point between the
max
less than or equal to
sys
Connections to
terminals
—
X6M X7M
1 2 3 4 5 6 7 8
X6M X7M
1 2 3 4 5 6 7 8
X6M X7M
1 2 3 4 5 6 7 8
X6M X7M
1 2 3 4 5 6 7 8
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.
3 Fix the cable with cable ties to the cable tie mountings.
4 Configure the user interface for the respective power supply.
See "8.2.2 Quick wizard: Standard" on
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 ∞ ∞
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:
7 Installation
page 49.
6 kW 6 kW 9 kW
3~ 3N~ 3N~
230 V 400 V 400 V
52.9Ω ∞ ∞
∞ 105.8Ω 105.8Ω
∞ 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
∞ ∞ ∞
Installer reference guide
43