Lennox EMEA DUO CU Série Notice Technique D'installation page 31

The setting values are given below depending on the fluids used and for a LP set point of -10°C (If the set point is different,
for example: -8°C, the setting of the BPR1, BPR2 and BPE pressure switches must be raised to the interlocking and cut-off
of 2°C)
 R404A Values
Designation
General safety LP switch
Compressor safety HP switch 1
Regulated LP switch 1
Compressor safety HP switch 2
Regulated LP switch 2
LP frame switch
HP frame switch
 R134A Values
Designation
General safety LP switch
Compressor safety HP switch 1
Regulated LP switch 1
Compressor safety HP switch 2
Regulated LP switch 2
LP frame switch
HP frame switch
 R407F Values
Designation
General safety LP switch
Compressor safety HP switch 1
Regulated LP switch 1
Compressor safety HP switch 2
Regulated LP switch 2
LP frame switch
HP frame switch
DUO CU
GB
Pressure switch setting sheet
Abbreviation Temperature °C
BPG -45,0
HPS1 56
BPR1
HPS2 56
BPR2
BPE 2,0
HPE 50,0
Pressure switch setting sheet
Abbreviation Temperature °C
BPG -26,0
HPS1 68
BPR1 -8
HPS2 68
BPR2 -9
BPE 2,0
HPE 50,0
Pressure switch setting sheet
Abbreviation Temperature °C
BPG -40,0
HPS1 57
BPR1 -8
HPS2 57
BPR2 -9
BPE 2,0
HPE 50,0
-
31/72 -
Cut-off in bar
0,07
25,20
-8 3,00
25,20
-9 2,84
4,80
18,11
Cut-off in bar
0,02
17,00
0,47
17,00
0,39
1,45
8,18
Cut-off in bar
0,00
25,20
2,23
25,20
2,08
3,89
17,11
Interlocking in bar
0,77
19,00
3,70
19,00
3,54
5,5
22,1
Interlocking in bar
0,72
13,00
1,17
13,00
1,09
2,1
12,2
Interlocking in bar
0,70
19,00
2,93
19,00
2,78
4,6
21,1