Defrost Module Function Set; Digital Scroll Controller (Zxd) - Emerson Copeland Scroll User Manual

For ZX-MT Unit:

OFF: Evaporator ON/OFF logic is same as compressor and this is the factory

default setting

ON: Evaporator fan will be ON for all time irrespective of whether the

compressor is turned ON or OFF

For ZXL-LT & ZXB-MT Units:

OFF: SH target value set at 5K and this is the factory default setting

for R404A, R134A and R22

ON: SH target value set at 10K, for R407F

Not applicable for ZX/ZXL/ZXB units

Note:

The settings given in the table are pre-set at the factory for new units

Time of Defrost

Rotary

Time

Switch1

(min)

0

0

1

5

2

10

3

15

4

20

5

25

6

30

7

35

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

available compressor capacity. The set-point can be altered using the SEtC parameter. Factory setting SEtC is -6

The control target of the fan speed controller is to maintain the average condenser mid-coil temperature and hence the

the SEtF parameter. Factory setting SEtF is 25

located in the SEtC position as shown in the diagram below:

Press for more than 2 seconds

SEtC value

Flashing

or

to change set value within 30 seconds

press to memorize new set value.

Use setting in the table

Time of Defrost Interval

Rotary

Time

Switch2

(hours)

0

0

1

1

2

2

3

3

4

4

5

5

6

6

7

7

C. Initial setting of set point for saturated suction temperature.Pre-set value is

o

ON

1 2 3

Defrost Duration (in Minutes)

Manual Defrost

Button

Remote Connector

For Manual Defrost

Figure 6. Defrost Module

Then SEtF (fan speed control set point) will be displayed

automatically.

SEtC value

Flashing

Or

to change set value within 30 seconds

press to memorize new value and Exit, or wait for

30 seconds without pressing any key to memorize value

and exit.

Defrost Interval

(in Hours)

E2 Connector

C.

o

9