Daikin 3 H HT F - To Connect the Changeover to External Heat Source; To Connect the Power Consumption Digital Inputs

6 Electrical installation
Installation manual
17
ETVH/X16S18+23EA6V+9W
Daikin Altherma 3 H HT F
4P644728-1 – 2021.02
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.
A
Y27
B
A
B
7 9
X2M
A4P
Y2YC
X1M
ab
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.
6.3.8 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 "4.2.1To open the indoor unit"[45]):
1 Top panel
1
2
3
2 User interface 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.
A
X1X2
LN
B
A
B
A4P
X2M
X1
a
X2
a Installation of EKRP1HBAA is required.
3 Fix the cable with cable ties to the cable tie mountings.
6.3.9 To connect the power consumption digital
inputs
Wires: 2 (per input signal)×0.75mm²
Power limitation digital inputs: 12VDC / 12mA detection
(voltage supplied by PCB)
[9.9] Power consumption control.
1 Open the following (see "4.2.1To open the indoor unit"[45]):
1 Top panel
1
2
3
2 User interface panel
3 Upper switch box cover
2 Connect the power consumption digital inputs cable to the
appropriate terminals as shown in the illustration below.