Daikin Altherma 3 H HT - Piping Diagram: Indoor Unit

16 | Technical data
Installer reference guide
255
EPRA14~18D + ETVZ16S18+23E
Daikin Altherma 3 H HT F
4P644739-1A – 2022.03
16.3 Piping diagram: Indoor unit
3D120612B
B1PW S1L
M3S
M1S
R8T
R2T
R1T
R5T
R7T
A
B
B
l m
m
a2
a1 d2
d1
c2
c1
g
h
k
k
i
j
B2L
o
j
f
B
b1
f
f
B
b2
f
q
q
q
q
q
q
M
M
X
X
k
p
n
e
B
f
B
f
A Indoor unit m Check valve
B Field installed n Capillary tube
a1 Space heating additional/direct zone – Water IN
(screw connection, 1")
o Backup heater
a2 Space heating additional/direct zone – Water OUT
(screw connection, 1")
p Water filter (main/mixed zone)
b1 Space heating main/mixed zone – Water IN (screw
connection, 1")
q Loose nut 1"
b2 Space heating main/mixed zone – Water OUT
(screw connection, 1")
B1PW Space heating water pressure sensor
c1 DHW – Cold water IN (screw connection, 3/4") B2L Flow sensor
c2 DHW – Hot water OUT (screw connection, 3/4") M1S 3-way valve (mixing valve for the main/mixed zone)
d1 Water IN from outdoor unit (screw connection, 1") M3S 3-way valve (space heating/domestic hot water)
d2 Water OUT to outdoor unit (screw connection, 1") R1T Thermistor (water IN)
e Pump (main/mixed zone) R2T Thermistor (backup heater – water OUT)
f Shut-off valve, male-female 1" R5T, R8T Thermistor (tank)
g Expansion vessel R7T Thermistor (main/mixed zone – water OUT)
h Magnetic filter/dirt separator S1L Flow switch
i Safety valve Screw connection
j Air purge Flare connection
k Drain valve Quick coupling
l Pump (additional/direct zone) Brazed connection