TECHNICAL MANUAL
CVM 3000
C 5030 CV/04-99 GB
1
Summary
1 CONNECTIONS .............................................................................................................................. 8
1.1 T
EMPERATURE PROBES
.............................................................................................................8
1.2 P
RESSURE PROBES
.......................................................................................................................9
1.3
L
OW VOLTAGE DIGITAL INPUTS
............................................................................................10
1.4 L
IVE DIGITAL INPUTS
..............................................................................................................11
1.5 R
ELAY OUTPUTS
......................................................................................................................12
2 VOLTAGE/FREQUENCY INPUT ...............................................................................................13
3 POWER SUPPLY..........................................................................................................................14
4 SERIAL CONNECTIONS ............................................................................................................14
5 DESCRIPTION OF USER INTERFACE....................................................................................17
5.1 U
NIT STARTUP
..........................................................................................................................17
5.2
U
NIT SHUTDOWN
.....................................................................................................................17
5.3 E
NABLING A COMPRESSOR
......................................................................................................17
5.4 D
ISABLING A COMPRESSOR
.....................................................................................................18
5.5 M
EANING OF COMPRESSOR STATUS LED
'
S
(A2) ..................................................................18
5.6 R
EADING THE OPERATING CONDITIONS
..............................................................................19
5.7 T
EMPERATURE DISPLAY
.........................................................................................................20
5.7.1 Version C (Chiller) ................................................................................................................20
5.7.2 Versions R/N/Q Chiller with recovery; Heat pumps; Multipurpose units .............................20
5.7.3 Version FC (Chiller with free-cooling) ..................................................................................21
5.8 O
PERATING MODE SELECT ION
..............................................................................................22
5.8.1 Version R...............................................................................................................................22
5.8.2 Version N...............................................................................................................................22
5.8.3 Version FC.............................................................................................................................22
5.8.4 Version Q...............................................................................................................................23
5.9 S
IGNALS
......................................................................................................................................23
5.10 ALARMS.................................................................................................................................24
5.10.1 Circuit and/or compressor alarms......................................................................................24
5.10.2 General alarms....................................................................................................................25
5.11 FLASHING LED'
S
....................................................................................................................26
6 ALARM SIGNALS ........................................................................................................................27
7 REGULATION................................................................................................................................30
7.1 C
HILLED WATER REGULAT ION
.............................................................................................30
7.1.1 Default set point settings........................................................................................................31
7.2 H
OT WATER REGULATION
.....................................................................................................32
7.2.1 Default set point settings........................................................................................................33
7.3 F
REE
-
COOLING REGULATION
(
ONLY
FC
VERSION
):............................................................34
7.3.1 Default set point settings........................................................................................................34
