Danfoss LLZ Instructions

Instructions
Danfoss scroll compressors
LLZ
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.
Operating limits
LLZ - R404A / R507 - Non Injection
65
60
55
50
45
40
20K superheat
35
30
25
20
15
10
5
-45 -40 -35 -30 -25 -20
Saturated suction temperature (°C)
LLZ - R448A/R449A - Non Injection
70
60
50
40
SH10K
30
RGT 20°C
20
10
0
-45 -40 -35 -30 -25 -20
Saturated Suction Temperature °C
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.
1 | © Danfoss | DCS (CC)| 2018.06
Electrical connections
R
T₃
Ring connect screw terminals
push
LLZ - R448A/R449A with LI (Tdis limit 120°C)
70
60
50
40
30
20
10
0
-15 -10 -5 -45
70
60
50
40
30
20
10
0
-15 -10 -5
-45
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.
C
T₁
S
T₂
C terminal box type
push
SH10K
RGT 20°C
-40 -35 -30 -25 -20 -15 -10 -5
Saturated Suction Temperature °C
LLZ - R452A - Non Injection
SH10K
RGT 20°C
-40 -35 -30 -25 -20 -15 -10 -5
Saturated Suction Temperature °C
A
B
C
D
E
A: Model number
B: Serial Number
C: Technical number
D: Manufacturing year
E: Internal protection
F: Supply voltage range
push
G: Locked rotor current
Maximum operating current
H: Lubricant type and nominal charge
Approved Refrigerant
I:
Three phase (Wiring diagram with pump-down cycle)
CONTROL CIRCUIT
F1 F1
KM KA KA
A1
A3
KS
180 s
A2
TH
LP
KS
KM KA LLSV
Wiring diagram with pump-down cycle
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
1" Rotolock
1" 1/4 Rotolock
1" 3/4 Rotolock
• Connect the required safety and control devices.
When the schrader port, if any, is used for this,
remove the internal valve.
8510283P01B - FRCC.PI.047.A3.02
F
G
H
I
L1 L3 L2
Q1
KM
KA
KS
PM
T1 T2
HPs
T3
M
DGT
KS
Tightening torque
80 Nm±10Nm
90 Nm±10Nm
110 Nm±10Nm