To Connect The Changeover To External Heat Source - Daikin Altherma 3 R F Installer's Reference Manual

8 | Electrical installation

8.3.9 To connect the changeover to external heat source

Installer reference guide
92
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
[A.2.2.6.1] Ext. backup heat src
1 Open the following (see
1 Top panel
2 Upper front panel
3 Upper switch box cover
2 Connect the changeover to external heat source cable to the appropriate
terminals as shown in the illustration below.
1+2 Wires connected to the alarm output
3 Wire between X2M and A4P
A4P Installation of EKRP1HBAA is
required.
3
7
b
7 9
X2M
A4P
a
"6.2.4 To open the indoor
Y2
4
unit" [ 44]):
ERLA03DAV3 + EHFZ03S18DJ3V
Daikin Altherma 3 R F
4P596821-1 – 2019.10
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3
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