Piping Diagram: Indoor Unit - Daikin ERGA04DAV3A Installer's Reference Manual

14 Technical data
14.2

Piping diagram: Indoor unit

A
C
a2
f
b2
b1
C
a1
f
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
Installer reference guide
90
j
n
k
M3S
R8T
R5T
f
g
Final English - Tanslations in progress
B1PW
m
R1T
R2T
i
j
R4T
l
h
k
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
B
B2PR
d2
c1
e
c2
R3T
d1
k
3D111411
ERGA04~08DAV3(A) + EHVH/X04+08S18+23DA
Daikin Altherma – Low temperature split
4P495248-1 – 2017.12