Dry & Spray Adjustment - LU-VE Emeritus LU1W Manual De Usuario

MODBUS MODBUS
Parameter Name and
Register Register
Description
Base 0 Base 1
PE13
Outdoor temp. differential
for wet resources
0x07DC 2013 (AP/spray) enabling
PF36
Fan speed with active
0x07C5 1990 spray (and spray + AP)
PR11
First-step spray adjustment
0x0783 1924 band percent
PR12
Second-step spray
0x0784 1925 adjustment band percent
PR13
Third-step spray
0x0785 1926 adjustment band percent
PR14
Delay between spray
solenoid valves
0x0786 1927 deactivations
PR15
Delay between spray
0x0787 1928 solenoid valves activations
The spray adjustment system is functional even if the exchanger has less than 4 valves/spray sector.
4.6
Spray resource is activated only when the outside temperature is higher than the PE12 threshold (with return
differential parameter PE13).
In Dry & Spray machines, solenoid valves vary in number from 1 to 3, and are always activated in the same sequence:
Activation: EV.S1> EV.S2> EV.S3
Deactivation: EV.S3> EV.S2> EV.S1
Each valve feeds a circuit that sprinkles both sides of the exchanger with the EV.S1 circuit above the coil height and
the corresponding circuit EV.S3 (if present) lower.
During this adjustment, the fans go at a constant speed, determined by parameter PF36.
LU1W - User Manual
Data Type and Notes
[unit of measure as set by
PH02, default °C]
- unsigned short int
[%]
- unsigned short int
[%]
- unsigned short int
[%]
- unsigned short int
[%]
- unsigned short int
[sec]
- unsigned short int
[sec]
- unsigned short int
Dry & Spray Adjustment
Default
Min
value
0.5 0.0
85.00 0.00
40.00 1.00
60.00 PR11
80.00 PR12
1 1
30 1
47
MODBUS
Decimal
Max Register
positions
Type
18.0 0.0 holding
PF20 0.00 holding
PR12 0.00 holding
PR13 0.00 holding
100.00 0.00 holding
9999 0 holding
9999 0 holding
REV.1.1 – 07/11/2017 - ENG