How To Unlock The Keyboard; Parameters Level 1 - Required Settings; Digital Operation - Emerson Copeland EazyCool ZXDI Series Application Manuallines

2.12.2 How to unlock the keyboard

Keep the and keys pressed simultaneously for more than 3 seconds, till the "Pon"
message is displayed.
2.13 Parameters level 1 – Required settings
The XCM25D is preconfigured to reduce the required settings on job-site to a minimum. In most
cases it will not be necessary to enter programming level 2 "Pr2". Table 16 gives an overview of
the parameters available in programming level 1 "Pr1".
NOTE: When changing parameter C05 (LS) a reset of the controller (interruption of power
supply) is required.
Parameters
Description
ZXDE ZXDI
Refrigerant selection for
C07 rEF
regulation
Digital compressor
C16 StC
setpoint
Proportional band for
C17 Pbd
compressor regulation
Cycle time for digital
C21 tdG
compressor
Minimum capacity for
C24 PMi
digital compressor
Maximum capacity for
C25 PMA
digital compressor
D29 LPA Low-pressure alarm value
E39 FSP Condenser setpoint
Regulation band of
E46 Fbd
variable fan
N01 Min Current minute
N02 Hr Current hour
N03 MdY Day of the month
N04 Mon Month
N05 YEr Year
T18 PAS Access to Pr2 level
Table 16: Parameters in programming level Pr1
NOTE: The full list of parameters in programming level "Pr2" can be found in Appendix 4.

2.14 Digital operation

A Digital unit is able to operate in a part-load mode. Part-load operation is achieved by loading
and unloading of the Digital scroll compressor for certain periods of time (time cycles). The cycle
of time can be chosen between 10 and 30 seconds. Example: if the time cycle is 20 seconds at
50% of capacity request, the compressor will run for 10 seconds loaded and 10 seconds unloaded.
The regulation starts when the suction pressure (AI1) increases and reaches the value
(SP-PB/2+(PB*PMI)/100) or (StC-Pbd/2+(Pbd*PMi)/100). Within the adjustment range
(SP-PB/2~SP+PB/2) or (StC-Pbd/2 ~ StC+Pbd/2) the Digital scroll compressor is activated in
PWM mode in accordance with the value of the control variable.
When the pressure is higher than (SP+PB/2) or (StC+Pbd/2) then the TRIAC output is at
maximum capacity. When the pressure is lower than (SP+PB/2) or (StC+Pbd/2) but higher than
(SP-PB/2) the Digital Scroll compressor modulates the capacity according to the proportional
band. If the pressure is lower than (SP-PB/2)/ (StC-Pbd/2) the Digital Scroll compressor switches
off.
16
Factory
Unit
setting
R134a, R404A, R407A,
[-] R404A R407F, R448A, R449A,
[bar] 3.3
[bar] 2.0
[sec] 10
[%] 20
[%] 100
[bar] 0.5
[°C] 35.0
[°C] 10.0
[-] [-]
[-] [-]
[-] [-]
[-] [-]
[-] [-]
[-] [-]
Comments
R450A, R513A
Password: 3 2 1
C6.1.10/0118-0318/E