Daikin Altherma 3 H HT F - To Connect the Space Cooling;Heating ON;OFF Output

9 | Electrical installation
Installer reference guide
127
EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1A – 2022.03
A
Y17
B
A
B
7 9
X2M
A4P
Y1YC
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.
9.3.7 To connect the space cooling/heating ON/OFF output
Wires: (2+1)×0.75mm²
Maximum load: 0.3A, 250VAC
—
1 Open the following (see "7.2.6To open the indoor unit"[471]):
1 Top panel
1
2
3
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.
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.