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Technical data
Installer reference guide
240
ERGA04~08EAV3(A) + EHBH/X04+08EA/EJ6V+9W
Daikin Altherma 3 R W
4P629085-1 – 2020.08
16.2 Piping diagram: Indoor unit
3D111541A
R2T
R4T
B1PW
B2PR
R1T
R3T
A
C
e
e
C
f
i
g
m
a2
a1
h
l
k
d
h
j
c1
b2
c2
b1
B
i
A
Water side
B1PW
Space heating water pressure sensor
B
Refrigerant side
B2PR
Refrigerant pressure sensor
C
Field installed
R1T
Thermistor (heat exchanger – water OUT)
a1
Space heating water IN
R2T
Thermistor (backup heater – water OUT)
a2
Space heating water OUT
R3T
Thermistor (liquid refrigerant)
b1
Gas refrigerant IN (heating mode; condenser)
R4T
Thermistor (heat exchanger – water IN)
b2
Liquid refrigerant OUT (heating mode; condenser)
Screw connection
c1
Liquid refrigerant IN (cooling mode; evaporator)
Flare connection
c2
Gas refrigerant OUT (cooling mode; evaporator)
Quick coupling
d
Plate heat exchanger
Brazed connection
e
Shut-off valve for service
f
Magnetic filter/dirt separator
g
Safety valve
h
Air purge
i
Drain valve
j
Flow sensor
k
Expansion vessel
l
Backup heater
m
Pump