Danfoss MLZ Series Instructions

Instructions
Danfoss scroll compressors
MLZ
Operating limits
MLZ - R407A
65
60
55
50
SH 10K
45
RGT 20°C
40
35
30 MLZ076
25
20
15
10
-30 -25 -20 -15 -10 -5 0
Evap. temp. (°C)
MLZ - R407F
65
60
55
50
SH 10K
45
RGT 20°C
40
35
30
MLZ076
25
20
15
10
-30 -25 -20 -15 -10 -5
Evap. temp. (°C)
MLZ - R404A / R507
65
60
SH 10K
55
50
RGT: 20°C
45
40
35
30
25
20
15
10
5
-35 -30 -25 -20 -15 -10 -5
Evap. Temp. (°C)
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.
The compressor must only be used for its
designed purpose(s) and within its scope of ap-
plication (refer to «operating limits»). Consult Ap-
plication guidelines and datasheet available from
cc.danfoss.com
The compressor is delivered under nitrogen gas pressure (between 0.3 and 0.4 bar / 4 and 6 psi). Do
not disassemble bolts, plugs, fittings, etc... unless all pressure has been relieved from the compres-
sor.
Electrical connections
Quick connect spade terminals
Quick connect spade terminals
P terminal box type
T and P terminal box type
1 | © Danfoss | DCS (CC)| 2017.07
A
B
C
D
E
75
70
65
60
55
50
45
40
35
30
25
20
15
-20 -15 -10 -5
5 10 15
65
60
55
50
45
40
35
30
25
20
15
10
5
0 5 10 15
0
-35 -30
70
65
60
55
50
45
40
35
30
25
20
15
10
0 5 10 15
-35 -30 -25 -20 -15 -10 -5
Never operate compressor without terminal
box cover in place and secured.
Ring connect screw terminals
Q and C terminal box type
MLZ - R134a
SH: 11K
0 5 10 15
Evap. Temp. (°C)
MLZ - R448A/R449A
RGT 20°C
SH10K
-25 -20 -15 -10 -5 0 5 10
Evap. Temp. °C
MLZ - R22
SH: 11K
RGT: 25°C
0 5 10 15
Evap. Temp. (°C)
C
T₁
S
T₂
R
T₃
Ring connect screw terminals
C terminal box type
A: Model number
B: Serial Number
C: Technical number
F D: Internal protection
E: Manufacturing year
G
H
F: Supply voltage range
I G: Locked rotor current
Maximum operating current
H: Lubricant type and nominal charge
I:
Approved Refrigerant
Single phase
N L
Thermostat
Run capacitor
20
N L
Thermostat
Run capacitor
Start capacitor
Brazed
Models
connection size
MLZ Suction 3/4"
015-026 Discharge 1/2"
15
MLZ Suction 7/8"
030-045 Discharge 1/2"
MLZ Suction 7/8"
048 Discharge 3/4"
MLZ Suction 1"1/8
058-076 Discharge 7/8"
Under all circumstances, the EN378 (or other
applicable local safety regulation) requirements
must be fulfilled.
Wear protective goggles and work gloves.
The compressor must be handled with caution in
the vertical position (maximum offset from the ver-
tical : 15°).
push
push
8510284P01B - FRCC.PI.048.A2.02
PSC wiring
C
IOL
S R
CSR wiring
Start Relay
C
5
2
S R
1
15 kΩ -1 w
Rotolock
connection size
Suction 1"1/4
Discharge 1"
Suct. 1"1/4
Discharge 1"
Suction 1"1/4
Discharge 1" 1/4
Suction 1"3/4
Discharge 1"1/4
push