Daikin Altherma 3 HT - Piping Diagram: Indoor Unit

16 | Technical data
Installer reference guide
261
EPRA14~18D + ETVH/X16S18+23E
Daikin Altherma 3 H HT F
4P644737-1A – 2022.03
16.3 Piping diagram: Indoor unit
3D120611B
B1PW
M3S
R8T
R2T
R1T
R5T
A
B
B
d
a2
a1
b2
b1
g
h
k
k
i
j
e
j
k
f
f
l
l
l
l
S1L
c2
c1
B2L
B
f
B
f
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