Operating conditions
R448A & R449A
POE
R448A and R449A are two HFO-based refrigerants
with similar properties. Both have a GWP below
1500 and comply with the EU F-gas regulation.
They can be used as alternatives to R404A
and R507 refrigerants in MBP application.
R448A&R449A have zero ozone depletion
potential(ODP=0). R448A&R449A are especially
suitable for low evaporating temperature
applications but they can also be applied to
medium evaporating temperature applications.
R448A&R449A are mixtures and have big
temperature glide, and therefore must be
charged in their gas phase.
The POE oil RL46HB(215PZ) is an ISO VG 46
synthetic polyol ester (POE) lubricant formulated
specifi cally for use in refrigeration and air-
conditioning compressors using HFC refrigerants.
This product provides effective wear protection
for steel and aluminum surfaces for increased
system life and improved efficiency and is
suitable for both initial fill and service fill. The
combination of low temperature characteristics
and unparalleled chemical and thermal stability
enable the use of RL46HB over a wide operating
temperature range. As there could be also some
MLZ with PVE compressor in field, the MLZ(A)
with POE compressor could replace it. As PVE oil
is fully miscible with POE, Danfoss recommends
the POE oil( RL46HB) regardless of oil charge in
the compressor. Replacement POE RL46HB oil is
available for topping up or replacing oil in the
field (see section “Accessory”).
Designation
Composition
ODP
GWP
Safety
group
Boiling
temp °C /°F
Temp
glide °C/°F
Critical
temp °C /°F
Critical
pressure
bar
Cond temp
@ 26bar °C
/°F
R22
R22
0.055
1760
A1
-41.1
(-41.98°F)
0
(0°F)
96
(204.8°F)
46.72
64.2
(147.56°F)
R134a
R134a
0
1300
A1
-26.4
(-15.52°F)
0
(0°F)
101
(213.8°F)
38.73
80.2
(176.36°F)
R404A
52% R143a - 44% R125 - 4% R134a
0
3943
A1
-45.5
(-49.9°F)
0.8
(1.44°F)
73
(163.4°F)
35.93
57.6
(135.68°F)
R507
50% R134a - 50% R125
0
3985
A1
-46.7
(-52.06°F)
0
(0°F)
71
(159.8°F)
35.77
56.2
(133.16°F)
R407A
40% R134a - 40% R125 - 20% R32
0
1923
A1
-45.1
(-49.18°F)
6.5
(11.7°F)
83
(181.4°F)
42.14
60.6
(141.08°F)
R407F
40% R134a - 30% R125 - 30% R32
0
1674
A1
-39.7
(-39.46°F)
6.4
(11.72°F)
83
(181.4°F)
44.42
58.5
(137.3°F)
R448A
21% R134a - 20% R1234yf
26% R125 - 26% R32 - 7% R1234ze
0
1273
A1
-46.1
(-50.98°F)
6.1
(10.98°F)
83.7
(182.66°F)
43.29
59.8
(139.64°F)
R449A
24.3% R32 - 24.7% R125
25.3% R1234yf - 25.7% R134a
0
1282
A1
-45.7
(-50.26°F)
6.0
(10.8°F)
83.9
(183.02°F)
43.43
59.9
(139.82°F)
R452A
30% R1234yf- 59% R125- 11% R32
0
1945
A1
-47
(-52.6°F)
3.8
(6.8°F)
77. 9
(172.22°F)
41.29
54.3
(129.74°F)
R513A
44% R134a - 56% R1234yf
0
573
A1
-29.6
(-21.3°F)
0
(0°F)
97.7
(207.9°F)
34.55
83
(181.4°F)
AB243286444663en-001003
22
Application Guidelines
Summary of Contents for MLZ Evolution A
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