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

9 | Electrical installation

9.3.8 To connect the changeover to external heat source

Installer reference guide
128
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.
INFORMATION
Bivalent is only possible in case of 1 leaving water temperature zone with:
▪
room thermostat control, OR
▪
external room thermostat control.
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
1 Top panel
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.
7 Y2
7 9
X2M
b
"7.2.6 To open the indoor
A4P
a
4
unit" [ 71]):
1
EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1A – 2022.03
3
2