Piping Diagram: Outdoor Unit - Daikin EWYA004D2V3P Installer's Reference Manual

17 | Technical data

17.1 Piping diagram: Outdoor unit

A
h
i
R1T
a2
c
R4T
a1
b
A Hydro module
B Compressor module
a1 Water IN (screw connection, male, 1")
a2 Water OUT (screw connection, male, 1")
b Drain valve (water circuit)
c Expansion vessel
d Flow sensor
e Plate heat exchanger
f Automatic air purge valve
g Safety valve
h Pump
i Connection for optional flow switch
j Liquid stop valve
k Filter
l Electronic expansion valve
m Muffler with filter
n Distributor
o Heat exchanger
p 4‑way valve
q Accumulator
r Compressor
s Muffler
t Gas stop valve with service port
Installer reference guide
212
g
f
e
R3T
d
n
m
l
k
t
j
B1PW Space heating water pressure sensor
B1PR Refrigerant pressure sensor
S1PH High pressure switch
Thermistors (hydro module):
R1T Outlet water heat exchanger
R3T Refrigerant liquid side
R4T Inlet water
Thermistors (compressor module):
R1T Outdoor air
R2T Compressor discharge
R3T Compressor suction
Refrigerant flow:
Heating
Cooling
Connections:
Screw connection
Flare connection
Quick coupling
Brazed connection
B
R1T
o
s
q
r
EWAA004~008D + EWYA004~008D
Packaged air-cooled water chillers
and packaged air to water heat pumps
p
s
3D139353 A
4P688013-1B – 2022.09