Stulz Cosmotec CVE Series, Use And Maintenance Manual

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Connection display (for CVO units)
Proceed as follows:
- plug in the connector minifit to connector placed on rear of unit
- connect the terminal on display
- optional: put display in metal support (supplied) for fixing to wall
ATTENTION!
Before carrying out any work on the unit, disconnect the power
supply
Sequencing function (2 units)
To connect two units in in sequencing, proceed as follows:
-
remove evaporator plate from the two units
- break micro-jointed hole placed on upper position (right) of
both evaporator plate
-
connect sequecing cable ACASEQ on connector DI4 of electrical
board XCB of first unit
-
pass sequencing cable on hole of first evaporator plate (made
previously)
-
fix evaporator plate on first unit
- pass sequencing cable on hole of second evaporator plate
(made previously)
-
connect sequencing cable on connector DI4 of electrical board
XCB of second unit
-
fix evaporator plate on second unit
- carry out the modification procedure of sequencing parameter
as described on chapter 7
It is advised the cable is shielded and inside metal tubes. In these
tubes other cables mustn’t be except signal cables.
MODBUS function
To connect serial port ACASPM, proceed as follows:
-
remove evaporator plate from the two units
- break micro-jointed hole placed on upper position (right) of
evaporator plate
-
connect cable to connector BMS on electrical board XCB
- pass cable on hole (made previously) and fix
- connect cable to hardware key
- connect the system to e – of hardware key
- carry out the modification procedure of modbus parameters as
described on chapter 7
Installation remote probe
- remove evaporator plate
- break micro-jointed hole placed on upper position (right) of
evaporator plate
-
disconnect standard probe to connector B1 and connect remote
probe ACARES
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plug in the connector minifit to connector placed on rear of unit
optional: put display in metal support (supplied) for fixing to wall
Before carrying out any work on the unit, disconnect the power
To connect two units in in sequencing, proceed as follows:
remove evaporator plate from the two units
placed on upper position (right) of
connect sequecing cable ACASEQ on connector DI4 of electrical
evaporator plate (made
pass sequencing cable on hole of second evaporator plate
connect sequencing cable on connector DI4 of electrical board
carry out the modification procedure of sequencing parameter
It is advised the cable is shielded and inside metal tubes. In these
tubes other cables mustn’t be except signal cables.
port ACASPM, proceed as follows:
remove evaporator plate from the two units
placed on upper position (right) of
connect cable to connector BMS on electrical board XCB
evaporator plate
of hardware key
carry out the modification procedure of modbus parameters as
placed on upper position (right) of
disconnect standard probe to connector B1 and connect remote
- pass remote probe on hole
evaporator plate
- carry out the modification procedure of SEM2
described on chapter 7
ATTENTION!
It is necessary to place air probe in a zone where there is air
circulation and to avoid the air conditioner intakes air with lower
temperature than minimin limit temperature showed in technical
label.
NON-COMPLIANCE WITH ABOVE INSTRUCTIONS WILL NOT ONLY
COMPROMISE THE OPERATION OF THE UNIT, BUT WILL ALSO
RENDER THE WARRANTY NULL AND VOID.
9. START-UP
ATTENTION!
Before you first start up the system install and connect it as
descibed in the “Installation” chapter.
DANGER!
Never run the machine if you have discovered leakage of the
coolant fluid. If traces of oil are present on the unit, which point to
a loss of coolant, on the inside or the outside, then the equipment
must be thoroughly checked before starting the unit. If necessary,
please contact our Aftersales department.
ATTENTION!
The ON-OFF button is only used to put the unit on stand
must therefore not be considered as a safety device for switching
off the unit prior to maint
ATTENTION!
When starting up for the first time or after a long period, if the
conditioner has remained inactive in environments with
temperatures below 0°C, preheat the compressor sump for 2
hours.
Supply power up the air conditioner.
according the working logic described on chapter “Control and
working logic”. Avoid stops and immediate restarts of the
compressor. The interval between the stop and subsequent re
should be at least 3 minutes.
Check unit mode
It is possible to do a check unit procedure to test correct functioning
of main components without to reach set point. Refer to paragraph
“Check unit mode”, chapter 7.
CVE-CVO
pass remote probe on hole (made previously) and fix
carry out the modification procedure of SEM2 parameters as
ATTENTION!
It is necessary to place air probe in a zone where there is air
circulation and to avoid the air conditioner intakes air with lower
temperature than minimin limit temperature showed in technical
label.
COMPLIANCE WITH ABOVE INSTRUCTIONS WILL NOT ONLY
COMPROMISE THE OPERATION OF THE UNIT, BUT WILL ALSO
RENDER THE WARRANTY NULL AND VOID.
ATTENTION!
Before you first start up the system install and connect it as
“Installation” chapter.
DANGER!
Never run the machine if you have discovered leakage of the
coolant fluid. If traces of oil are present on the unit, which point to
a loss of coolant, on the inside or the outside, then the equipment
cked before starting the unit. If necessary,
please contact our Aftersales department.
ATTENTION!
OFF button is only used to put the unit on stand-by. It
must therefore not be considered as a safety device for switching
off the unit prior to maintenance operations.
ATTENTION!
When starting up for the first time or after a long period, if the
conditioner has remained inactive in environments with
temperatures below 0°C, preheat the compressor sump for 2
hours.
Supply power up the air conditioner. Air conditioner runs in
according the working logic described on chapter “Control and
working logic”. Avoid stops and immediate restarts of the
compressor. The interval between the stop and subsequent re-start
It is possible to do a check unit procedure to test correct functioning
of main components without to reach set point. Refer to paragraph