Daikin Altherma ERGA04E V3 Series - Piping Diagram: Indoor Unit

16 | Technical data
Installer reference guide
267
ERGA04~08E + EHVH04+08SU18+23E
Daikin Altherma 3 R F
4P629090-1C – 2022.08
16.2 Piping diagram: Indoor unit
3D111411
B1PW
M3S
B2PR
R3T
R8T
R2T
R1T
R5T
R4T
A
C
C
l
a2
a1
b2
b1
f
g
e
h
k
k
i
j
m
n
j
d1
c2
d2
c1
B
k
f
f
A Water side B1PW Space heating water pressure sensor
B Refrigerant side B2PR Refrigerant pressure sensor
C Field installed M3S 3-way valve (space heating/domestic hot water)
a1 Space heating water IN R1T Thermistor (heat exchanger – water OUT)
a2 Space heating water OUT R2T Thermistor (backup heater – water OUT)
b1 Domestic hot water: cold water IN R3T Thermistor (liquid refrigerant)
b2 Domestic hot water: hot water OUT R4T Thermistor (heat exchanger – water IN)
c1 Gas refrigerant IN (heating mode; condenser) R5T, R8T Thermistor (tank)
c2 Liquid refrigerant OUT (heating mode; condenser) Screw connection
d1 Liquid refrigerant IN (cooling mode; evaporator) Flare connection
d2 Gas refrigerant OUT (cooling mode; evaporator) Quick coupling
e Plate heat exchanger Brazed connection
f Shut-off valve for service (if equipped)
g Expansion vessel
h Magnetic filter/dirt separator
i Safety valve
j Air purge
k Drain valve
l Pump
m Flow sensor
n Backup heater