Piping Diagram: Indoor Unit - Daikin ERGA06EAV3H Installer's Reference Manual

17 | Technical data

17.2 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
D Refrigerant side
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 Gas refrigerant IN (heating mode; condenser)
c2 Liquid refrigerant IN (cooling mode; evaporator)
c3 Gas refrigerant OUT (cooling mode; evaporator)
c4 Liquid refrigerant OUT (heating mode; condenser)
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"
n Plate heat exchanger
B2L Flow sensor
B1PR Refrigerant pressure sensor
B1PW Space heating water pressure sensor
M1S Tank valve
M2S Bypass valve
R1T Thermistor (plate heat exchanger - water OUT)
R2T Thermistor (backup heater – water OUT)
R3T Thermistor (Refrigerant liquid side)
R4T Thermistor (Inlet water)
R5T, R8T Thermistor (tank)
R7T Thermistor (tank - water OUT)
Screw connection
Flare connection
Quick coupling
Brazed connection
Installer reference guide
270
A
R T 7
M S 1
R T 8
R T 5
B L 2
M S 2
k
C
R T 2 R1T
f
B1PW
e
R T
m
B
i
h
D
B1PR
n
R3T
4
ERGA04~08EAV3+V3A+V37 + EHSH/X(B)04+08P30+50EF
Daikin Altherma 3 R ECH₂O
c3
c1
c4
c2
3D136063
4P678716-1 – 2022.01