To Connect The Changeover To External Heat Source - Daikin EPRA18DAV3 Installer's Reference Manual

8 | Electrical installation

8.3.8 To connect the changeover to external heat source

Installer reference guide
110
1 Top panel
2 User interface panel
3 Upper switch box cover
2 Connect the space cooling/heating ON/OFF output cable to the appropriate
terminals as shown in the illustration below.
2 1
X2M 7
9
A4P Y2 YC
A
B
A
B
a Installation of EKRP1HBAA is required.
b Prewiring between X2M/7+9 and Q1L (= thermal protector backup heater). Do NOT
change.
3 Fix the cable with cable ties to the cable tie mountings.
Wires: 2×0.75 mm²
Maximum load: 0.3 A, 250 V AC
Minimum load: 20 mA, 5 V DC
[9.C] Bivalent
1+2 Wires connected to the space
cooling/heating ON/OFF output
3 Wire between X2M and A4P
A4P Installation of EKRP1HBAA is
3
required.
7
7 9
X2M
b
Y2
A4P
a
EPRA14~18DAV3+W1 + ETVH/X16S18+23DA6V+9W(G)
Daikin Altherma 3 H HT F
4P587502-1B – 2020.12
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