Stulz Cosmotec CVE Series, Use And Maintenance Manual

Page: 28 / 88

ATTENTION!
Before carrying out any work on the unit, disconnect the power
supply
ATTENTION!
Before making any connections, check the supply voltage, which
must correspond to that inidcated on the identification plate of
the unit
ATTENTION!
Check correct sequencing of phase (on three phase model)
ATTENTION!
Check correct polarity conn and – (on 48Vdc model)
ATTENTION!
The system must be equipped with an efficient ground connection
IMPORTANT: if control phase module is not present
model, it is advised to install it externallly upstream of the power
supply of the unit .
ATTENTION!
The user is responsible for providing and installing an automatic
cut-out switch upstream of the unit to enable work to be carried
out in the absence of any voltage. The switch must have
equivalent to that indicated on the identification plate.
Check the main voltage.
Disconnect the power supply before working on the system.
Check that the connection wires have appropriate suitable section in
according power and distance of the air conditioner (see EN 60335
1, 60335-2-40).
Make the electrical connection by cable, connector, screw terminal
block on the unit. Unit CVE03 CE has cable (3mt). Unit CVE03 UL has
internal screw terminal block, to connect power supply pass cable
through back frame of the unit, to wire the cable on screw terminal
block. To have accessibility remove frontal panel and close plate of
evaporator side (drawing 1). CE units with electronic board have
connector on rear of the unit (drawing 2), UL units with electronic
board has internal screw terminal block (drawing 3). For further
information to refer electrical drawing of the unit.
Figura 1 Figura 2 Figura 3
The nominal voltage is indicated on identification label and technical
data on chapter 15.Power supply can be: 48VDC(36÷59DC). For
mono-phase: 115V-60Hz, 230V-50/60Hz; two
460V-60Hz; three-phase: 400V-50Hz, 460V-60Hz. Unit with three
phase are produced on factory for power supply 460V
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sconnect the power
Before making any connections, check the supply voltage, which
must correspond to that inidcated on the identification plate of
Check correct sequencing of phase (on three phase model)
(on 48Vdc model)
The system must be equipped with an efficient ground connection
if control phase module is not present on three phase
externallly upstream of the power
The user is responsible for providing and installing an automatic
out switch upstream of the unit to enable work to be carried
out in the absence of any voltage. The switch must have a capacity
equivalent to that indicated on the identification plate.
Disconnect the power supply before working on the system.
Check that the connection wires have appropriate suitable section in
e air conditioner (see EN 60335-
Make the electrical connection by cable, connector, screw terminal
block on the unit. Unit CVE03 CE has cable (3mt). Unit CVE03 UL has
internal screw terminal block, to connect power supply pass cable
gh back frame of the unit, to wire the cable on screw terminal
block. To have accessibility remove frontal panel and close plate of
CE units with electronic board have
connector on rear of the unit (drawing 2), UL units with electronic
board has internal screw terminal block (drawing 3). For further
information to refer electrical drawing of the unit.
Figura 3
The nominal voltage is indicated on identification label and technical
48VDC(36÷59DC). For
50/60Hz; two-fase: 400V-50Hz,
60Hz. Unit with three-
phase are produced on factory for power supply 460V-60Hz; to
power supply unit at 400V-50Hz to refer electrical drawing of unit.
Nominal voltage have a range of ±10%, frequency ±2%.
Power supply connection has to be made by all
switch, or motor protector, installed by the installer, with at least
3mm gap between the open contacts.
IMPORTANT: on units with power supply
mandatory to install a magneto-thermic protection with curve D
upstream the air conditioner power supply line (by the installer) in
according with EN 60335-1, 60335-2
Regarding protection upstream the air conditioner UL refer
standard for approval of enclosure (by the installer).
Installation of filter
Units can be provided of air filter placed on condensing side
(external side), it required regular ordinary maintenance in order to
ensure correct functioning of the air c
maintenance of the filter compromises the functioning of the air
conditioner because the maximum ambient temperature is
declassed. It is recommended to do a periodic check/cleaning of
status of filter.
If the unit operates in parti
environments it necessary more frequent cleaning activities.
CVE units
Hook filter, with two flaps placed on lower position, to intake grille
of panel. Lay the filter on panel and make sure that two magnets are
laid.
CVO units
Air filter is located behind the panel.
ATTENTION!
Before removing the front panel switch off the unit (DANGER
moving parts!)
Instruction for installation of filter:
-
Remove the screws on the panel, disconnect ground wire and
remove panel
-
Thread the filter on lateral guides
- Connect ground wire, fix the panel with screws (previously
removed)
Cleaning instructions:
Wash the filter with warn water. DO NOT use caustic.
After washing, dry with an air flow.
Activity has to be made with filter alone, not installed on the unit.
CVE-CVO
50Hz to refer electrical drawing of unit.
al voltage have a range of ±10%, frequency ±2%.
Power supply connection has to be made by all-pole disconnect
switch, or motor protector, installed by the installer, with at least
3mm gap between the open contacts.
on units with power supply >230V two-phase is is
thermic protection with curve D
upstream the air conditioner power supply line (by the installer) in
2-40.
Regarding protection upstream the air conditioner UL refer used
standard for approval of enclosure (by the installer).
Units can be provided of air filter placed on condensing side
(external side), it required regular ordinary maintenance in order to
ensure correct functioning of the air conditioner. The lack of
maintenance of the filter compromises the functioning of the air
conditioner because the maximum ambient temperature is
declassed. It is recommended to do a periodic check/cleaning of
status of filter.
If the unit operates in particular dusty/dirty
environments it necessary more frequent cleaning activities.
Hook filter, with two flaps placed on lower position, to intake grille
of panel. Lay the filter on panel and make sure that two magnets are
filter is located behind the panel.
ATTENTION!
Before removing the front panel switch off the unit (DANGER
moving parts!)
Remove the screws on the panel, disconnect ground wire and
on lateral guides
Connect ground wire, fix the panel with screws (previously
Wash the filter with warn water. DO NOT use caustic.
lter alone, not installed on the unit.