17
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Technical data
Installer reference guide
218
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
17.2 Piping diagram: Outdoor unit
3D128954A
R4T
R1T
R3T
R5T
R
4T
R
1T
R
3T
R
2T
M1C
S1PH
S1
PL
S1NPH
Y1E
Y3E
Y1S
a
c
d
f
j
i
g
h
l
k
s
q
o
r
m
n
p
u
u
e
m
t
b
*
**
B1PW
1N~
*
1N~
**
3N~
**
3N~
*
A
B
A Hydro module
B1PW
Space heating water pressure sensor
B Compressor module
M1C
Compressor
S1PH
High pressure switch
a
Water IN (screw connection, male, 1")
S1PL
Low pressure switch
b
Water OUT (screw connection, male, 1")
S1NPH
Pressure sensor
c
Drain valve (water circuit)
Y1E
Electronic expansion valve (main)
d
Plate heat exchanger
Y3E
Electronic expansion valve (injection)
e
Flow sensor
Y1S
Solenoid valve (4-way valve)
f
Expansion vessel
g
Safety valve
Thermistors (hydro module):
h
Manual air purge valve
R1T
Outlet water heat exchanger
i
Pump
R3T
Refrigerant liquid side
j
Connection for optional flow switch
R4T
Inlet water
k
Liquid stop valve with service port
l
Gas stop valve with service port
Thermistors (compressor module):
m
Filter
R1T
Outdoor air
n
Rectifier
R2T
Compressor discharge
o
Economiser
R3T
Compressor suction
p
Heat sink
R4T
Air heat exchanger
q
Distributor
R5T
Air heat exchanger, middle
r
Heat exchanger
s
Service port 5/16" flare
Refrigerant flow:
t
Accumulator
Heating
u
Muffler
Cooling
Connections:
Screw connection
Flare connection
Quick coupling
Brazed connection
Summary of Contents for EWAA0 DAV3P Series
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