Installation and servicing of the
compressor by qualified personnel
only. Follow these instructions and
sound refrigeration engineering practice
relating to installation, commissioning,
maintenance and service.
E
F
G
H
I
A
B
C
D
A
: Model number
B
: Serial Number
C
: Technical number
D
: Manufacturing year
E
: Internal protection
F
: Supply voltage range
G
: Locked rotor current
Maximum operating current
H
: Lubricant type and nominal charge
I
:
Approved Refrigerant
-45
-40
-35
-30
-25
-20
-15
-10
-5
5
10
15
20
25
30
35
40
45
50
55
60
65
S
a
tur
a
ted dischar
ge t
emper
a
tur
e (°C
)
Saturated suction temperature (°C)
20K superheat
0
10
20
30
40
50
60
70
-45
-40
-35
-30
-25
-20
-15
-10
-5
S
at
u
rat
e
d
D
is
ch
ar
g
e
T
e
m
p
e
rat
u
re
°C
Saturated Suction Temperature °C
SH10K
RGT 20°C
0
10
20
30
40
50
60
70
-45
-40
-35
-30
-25
-20
-15
-10
-5
S
at
u
rat
e
d
D
is
ch
ar
g
e
T
e
m
p
e
rat
u
re
°C
Saturated Suction Temperature °C
SH10K
RGT 20°C
push
push
push
Operating limits
Electrical connections
C
T₁
S
T₂
R
T₃
Ring connect screw terminals
C terminal box type
LLZ - R404A / R507 - Non Injection
LLZ - R448A/R449A with LI (Tdis limit 120°C)
LLZ - R448A/R449A - Non Injection
LLZ - R452A - Non Injection
0
10
20
30
40
50
60
70
-45
-40
-35
-30
-25
-20
-15
-10
-5
S
at
u
rat
e
d
D
is
ch
ar
g
e
T
e
m
p
e
rat
u
re
°C
Saturated Suction Temperature °C
SH10K
RGT 20°C
M
DGT
HPs
180 s
TH
LP
CONTROL CIRCUIT
F1
F1
KM
KM
KM
KA
KA
A1
A2
A3
KA
KA
KS
KS
KS
L1
L3
L2
Q1
T1
T3
T2
LLSV
KS
PM
Wiring diagram with pump-down cycle
Three phase (Wiring diagram with pump-down cycle)
1 – Introduction
These instructions pertain to the LLZ scroll
compressors used for refrigeration systems. They
provide necessary information regarding safety and
proper usage of this product.
2 – Handling and storage
•
Handle the compressor with care. Use the
dedicated handles in the packaging. Use the
compressor lifting lug and use appropriate and
safe lifting equipment.
• Store and transport the compressor in an upright
position.
• Store the compressor between -35°C and 70°C /
-31°F and 158°F.
• Don’t expose the compressor and the packaging
to rain or corrosive atmosphere.
3 – Safety measures before assembly
Never use the compressor in a flammable
atmosphere.
• Mount the compressor on a horizontal flat surface
with less than 7° slope.
• Verify that the power supply corresponds to the
compressor motor characteristics (see nameplate).
• When installing a compressor for R452A, R404A/
R507, R448A/R449A, use equipment specifically
reserved for HFC refrigerants which was never
used for CFC or HCFC refrigerants.
•
Use clean and dehydrated refrigeration-grade
copper tubes and silver alloy brazing material.
• Use clean and dehydrated system components.
• The piping connected to the compressor must be
flexible in 3 dimensions to dampen vibrations.
• The compressor must always be mounted with the
rubber grommets supplied with the compressor.
4 – Assembly
•
Slowly release the nitrogen holding charge
through discharge and suction ports.
• Connect the compressor to the system as soon as
possible to avoid oil contamination from ambient
moisture.
•
Avoid material entering into the system while
cutting tubes. Never drill holes where burrs cannot
be removed.
• Do not exceed the maximum tightening torque
for rotolock connections
Rotolock connections
Tightening torque
1” Rotolock
80 Nm±10Nm
1” 1/4 Rotolock
90 Nm±10Nm
1” 3/4 Rotolock
110 Nm±10Nm
• Connect the required safety and control devices.
When the schrader port, if any, is used for this,
remove the internal valve.
Instructions
Danfoss scroll compressors
LLZ
1 | © Danfoss | DCS (CC)| 2018.06
8510283P01B - FRCC.PI.047.A3.02
