Page - IOM / @DNOVA-µAC-0907-E
OPERATING MODES
connecting a series of units
This configuration is possible both for direct expansion (ED)
and battery (CW) machines, as well as Shelter models. This
allows the timed rotation of a unit in stand-by within a group
of maximum 2 units. If one of the machines in operation
goes into an alarm condition, theunit in stand-by is activated.
Unit 1
Unit 2
Line
Line
GO
Fig. 3 connecting 2 units
This is done using a digital input and output which, via
the “master” (unit 1), sends the command to activate and
deactivate the unit in stand-by (the command is updated every
10 minutes).
Heating
element
Air outlet
Air inlet
Air flow
diverter
Condenser
air outlet
Condenser
side air inlet
Recirculation
fan
line
line
line
line
condensator
fan
alarm
alarm 1
No
damper
Power
supply
24Vac
main
fan
outdoor temp.
supply air temp.
room temp.
condensator pressure
out
+ Vcc
air flow alarm
heaters alarm
power supply failure
low press. C1
fan overload
compr. overload
high press. C1
generic alarm
filter alarm
remote on/off
oPeRAtInG MoDes
Following are descriptions of some examples of the main machine configurations.
Precision units for telecom
