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17.3 Piping diagram: Indoor unit
C
a2
g
D
p
p
q
b2
c
r
b1
*s
*t
*u
C
a1
g
A Water side
B Refrigerant side
C Field installed (delivered with the unit)
D Field supplied
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, 3/4")
b2 DHW – Hot water OUT (screw connection, 3/4")
c Recirculation connection
d1 Gas refrigerant IN (heating mode; condenser)
d2 Liquid refrigerant OUT (heating mode; condenser)
e1 Liquid refrigerant IN (cooling mode; evaporator)
e2 Gas refrigerant OUT (cooling mode; evaporator)
f Plate heat exchanger
g Shut-off valve for service
h Flexible pipe
i Expansion vessel
j Magnetic filter/dirt separator
k Safety valve
l Automatic air purge
m Drain valve
n Pump
o Backup heater
ERLA11~16D + EBVH/X11+16S18+23D
Daikin Altherma 3 R F
4P643602-1B – 2022.05
A
m
M3S
i
h
B1PW
l
B2L
R1T
R2T
o
R8T
R5T
k
l
n
j
m
p Shut-off valve (recommended)
q Non-return valve (recommended)
r Pressure reducing valve (recommended)
*s Pressure relief valve (max. 10 bar (=1.0 MPa))
(mandatory)
*t Tundish (mandatory)
*u Expansion vessel (mandatory)
B2L Flow sensor
B1PW Space heating water pressure sensor
M3S 3-way valve (space heating/domestic hot water)
Thermistors:
R1T Outlet water heat exchanger
R2T Outlet water backup heater
R3T Refrigerant liquid side
R4T Inlet water
R5T, R8T Tank
Connections:
Screw connection
Flare connection
Quick coupling
Brazed connection
17
Technical data
|
B
f
R3T
R4T
e2
d1
d2
e1
3D128638
Installer reference guide
281
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