Piping Diagram: Indoor Unit - Daikin Altherma 3 R F Installer's Reference Manual

14 | Technical data

14.2 Piping diagram: Indoor unit

A
C
a2
f
b2
b1
C
a1
f
Installer reference guide
212
j
n
k
M3S
f
g
A Water side
B Refrigerant side
C Field installed
a1 Space heating water IN
a2 Space heating water OUT
b1 Domestic hot water: cold water IN
b2 Domestic hot water: hot water OUT
c1 Gas refrigerant IN (heating mode; condenser)
c2 Liquid refrigerant OUT (heating mode; condenser)
d1 Liquid refrigerant IN (cooling mode; evaporator)
d2 Gas refrigerant OUT (cooling mode; evaporator)
e Plate heat exchanger
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
B1PW Space heating water pressure sensor
B2PR Refrigerant pressure sensor
M3S 3-way valve (space heating/domestic hot water)
R1T Thermistor (heat exchanger – water OUT)
R2T Thermistor (backup heater – water OUT)
R3T Thermistor (liquid refrigerant)
R4T Thermistor (heat exchanger – water IN)
R5T, R8T Thermistor (tank)
Screw connection
Flare connection
Quick coupling
Brazed connection
B1PW
m
R1T
R2T
R8T
R5T
i
j
R4T
l
h
k
B
B2PR
e
R3T
k
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA/DJ3V+6V+9W7
d2
c1
c2
d1
3D111411
Daikin Altherma 3 R F
4P618947-1 – 2020.03