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16
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Technical data
16.3 Piping diagram: Indoor unit
B
a2
f
l
b2
b1
B
a1
f
l
A Indoor unit
B Field installed
a1 Space heating/cooling – Water IN (screw connection, 1")
a2 Space heating/cooling – Water OUT (screw connection, 1")
b1 DHW – Cold water IN (screw connection, 3/4")
b2 DHW – Hot water OUT (screw connection, 3/4")
c1 Water IN from outdoor unit (screw connection, 1")
c2 Water OUT to outdoor unit (screw connection, 1")
d Pump
e Backup heater
f Shut-off valve, male-female 1"
g Expansion vessel
h Magnetic filter/dirt separator
i Safety valve
j Air purge
k Drain valve
l Loose nut 1"
B1PW Space heating water pressure sensor
B2L Flow sensor
M3S 3-way valve (space heating/domestic hot water)
R1T Thermistor (water IN)
R2T Thermistor (backup heater – water OUT)
R5T, R8T Thermistor (tank)
S1L Flow switch
Screw connection
Flare connection
Quick coupling
Brazed connection
Installer reference guide
274
A
k
M3S
g
B1PW
j
B2L
R1T
R2T
e
R8T
R5T
i
j
d
h
k
S1L
B
l
f
B
f
l
k
3D120611B
EPRA14~18D + ETVH16SU18+23E
Daikin Altherma 3 H HT F
4P644738-1D – 2023.10
c1
c2
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