User manual

6
ZX Platform Condensing Unit
Digital Scroll controller (ZXD)
The controller has been pre-programmed with a number of parameter values that are set for typical application. Individual
installation requirements, however, may make it necessary to alter parameter settings. The control target of the digital scroll
compressor controller is to maintain the suction pressure (or saturated suction temperature) at a dened value by varying the
available compressor capacity. The set-point can be altered using the SEtC parameter. Factory setting SEtC is -6
o
C.
The control target of the fan speed controller is to maintain the average condenser mid-coil temperature and hence the average
discharge pressure at a dened value. This is achieved by varying the fan speed. The set-point can be altered using the SEtF
parameter. Factory setting SEtF is 25
o
C.Initial setting of set point for saturated suction temperature.Pre-set value is located in the
SEtC position as shown in the diagram below:
SEtC value
Flashing
or to change set value within 30 seconds
pres
s to memorize new value and Exit, or wait for
30 seconds witho
ut pressing any key to memorize value and exit
press for more than 2 sec
or to change set value within 30 seconds
press to memorize new set value.
Then SEtF (fan speed control set point) will be displayed automatically.
SEtC value
Flashing
Time of Defrost Time of Defrost Interval
Rotary
Switch1
Time(min)
Rotary
Switch2
Time
(hours)
0 0 0 0
1 5 1 1
2 10 2 2
3 15 3 3
4 20 4 4
5 25 5 5
6 30 6 6
7 35 7 7
Defrost Module Function Set
Defrost Duration (in Minutes)
Defrost Interval
(In Hours)
E2 Connector
Manual Defrost
Button
Remote Connector
For Manual Defrost
Figure 06
Figure 06: ZX Platform Defrost Module