Daikin EWAT_B - 4.1.2 Scheduler and Silent mode functionalities

EWAT_B
Operating Manual
11/38
Scheduler
Unit start/stop can be time programmed for each weekday
Circuit #X
Disable
Circuit #X disabled
Enable
Circuit #X enabled
Test
Circuit #X in test mode. This feature has to be used only from trained person or Daikin service
4.1.2 Scheduler and Silent mode functionalities
The Scheduler function can be used when is required an automatic chiller start/stop programming.
To use this function, follow below instructions:
1. Q0 selector = Local (refer to 4.1)
2. Unit Enable = Scheduler (refer to 4.1.1)
3. Controller date and time properly set (refer to 4.7)
Scheduler programming is available going in Main Page  View/Set Unit  Scheduler menu
For each weekday can be programmed up to six time bands with a specific operating mode. First operating mode starts at
Time 1, ends at Time 2 when will start the second operating mode and so on until the latest.
Depending on unit type, different operating modes are available:
Parameter
Range
Description
Value 1
Off
Unit disabled
On 1
Unit enabled – Water setpoint 1 selected
On 2
Unit enabled – Water setpoint 2 selected
On 1 - Silent
Unit enabled – Water setpoint 1 selected – Fan silent mode enabled
On 2 - Silent
Unit enabled – Water setpoint 2 selected – Fan silent mode enabled
When the Fan Silent Mode function is enabled the chiller noise level is reduced decreasing the maximum speed allowed
for fans. Following table reports how much maximum speed is decreased for the different unit types.
Unit noise class
Normal maximum fan speed
[rpm]
Silent mode maximum fan speed
[rpm]
Standard
900
700
Low
900
700
Reduced
700
500