Daikin ETSX16E Installer's Reference Manual page 277

16.3 Piping diagram: Indoor unit
B
a2
g
l
l
d1
d2
l
l
b2
b1
l
B
a1
g
l
A Indoor unit
B Field installed
C Optional
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, 1")
b2 DHW – Hot water OUT (screw connection, 1")
c1 Water IN from outdoor unit (screw connection, 1")
c2 Water OUT to outdoor unit (screw connection, 1")
d1 Water IN from bivalent heat source (screw connection, 1")
d2 Water OUT to bivalent heat source (screw connection, 1")
e Pump
f Backup heater
g Shut-off valve, female-female 1"
h Expansion vessel
i Drain valve
k Safety valve
l External thread 1"
m External thread 3/4"
B2L Flow sensor
B1PW Space heating water pressure sensor
M1S Tank valve
M2S Bypass valve
R1T Thermistor (water IN)
R2T Thermistor (backup heater – water OUT)
R5T, R8T Thermistor (tank)
R7T Thermistor (tank - water OUT)
S1L Flow switch
Screw connection
Flare connection
Quick coupling
Brazed connection
EPRA14~18D + ETSH/X(B)16P30+50E
Daikin Altherma 3 H HT ECH₂O
4P679467-1D – 2023.11
A
R T 7
M S 1
R T 5
R T 8
B L 2
M S 2
k
S1L
C
R T 2
f
B1PW
e
m
B
i
h
16 Technical data
|
B
R1T
l
g
B
g
l
3D136050 B
Installer reference guide
c1
c2
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