17
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Technical data
Installer reference guide
79
2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A
R32 Split series
4P600463-5E – 2021.12
17.2 Piping diagram
17.2.1 Piping diagram: Outdoor unit
Component PED category classification:
▪
High pressure switches: category IV
▪
Compressor: category II
▪
Accumulator: 4MXM80, 5MXM90 category II, other models category I
▪
Other components: refer to PED article 4, paragraph 3
7.9CuT
7.9CuT
7.9CuT
7.9CuT
12.7CuT
M
12.7CuT
(12.7CuT)
(9.5CuT)
12.7CuT
12.7CuT
12.7CuT
1
5.9C
uT
15.
9C
uT
15.9CuT
15.9CuT
9.5
Cu
T
9.5CuT
12.7CuT
7.9CuT
7.9CuT
MV
MV
A
B
6.4CuT
6.4CuT
(6.4CuT)
(6.4CuT)
9.5CuT
9.5CuT
9.5CuT
9.5CuT
7.9CuT
S1P
H
SV
9.5CuT
9.5CuT
6.4CuT
Solenoid valve
12.7CuT
15.9CuT
d
e
f
k
a
b
c
g
i
d
r
-A
r
-B
s
s
t
t
u
u
d
p
o
o
n
l
l
m
l
w
x
v
-A
v
-B
v
-A
v
-B
q
h
2MXM68
a
Heat exchanger
k
4-way valve
u
Thermistor (gas)
b
Outdoor air temperature
thermistor
l
Muffler
v
Room
c
Heat exchanger thermistor
m
Discharge pipe thermistor
w
Field piping – liquid
d
Refnet header
n
Compressor
x
Field piping – gas
e
Fan motor
o
Accumulator
y
Liquid receiver
f
Propeller fan
p
Gas stop valve
S1PH
High pressure switch
(automatic reset)
g
Capillary tube
q
Liquid stop valve
h
Distributor
r
Electronic expansion valve
Refrigerant flow: cooling
i
Muffler with filter
s
Thermistor (liquid)
Refrigerant flow: heating
j
Solenoid valve
t
Filter