Daikin Altherma 3 H MT W - To Connect the Changeover to External Heat Source

9 | Electrical installation
Installer reference guide
121
EPRA08~12EAV3+W1 + ETBH/X12EF6V+9W
Daikin Altherma 3 H MT W
4P634885-1 – 2021.03
7
9
YCY2
X2M
12
3
A4P
1+2 Wires connected to the space
cooling/heating ON/OFF output
3 Wire between X2M and A4P
A4P Installation of EKRP1HBAA is
required.
B
C
A
A
7Y2
B
X2M
C
X2M
A4P
X1M
a
7 9
Y2YC
A4P
a Installation of EKRP1HBAA is required.
3 Fix the cable with cable ties to the cable tie mountings.
9.3.8 To connect the changeover to external heat source
Wires: 2×0.75mm²
Maximum load: 0.3A, 250VAC
Minimum load: 20mA, 5VDC
[9.C] Bivalent
1 Open the following (see "7.2.5To open the indoor unit"[471]):
1 Front panel
1
2
3
2 Switch box cover
3 Switch box