AirTap ATI50 Technical Manual page 11

CONTROLS AND OPERATING LOGIC
C. HOW CAN I ACCESS AND CHANGE THE CONTROL PARAMETERS?
You may check or change the current value of a parameter by following these steps:
1. Keep the 'Mode' button pressed till F11 displays on the screen
2. Press 'Up' or 'Down' arrow key to select a parameter
3. Press 'Timer' button to check the current value of the selected parameter
4. To retain current value of the selected parameter, press the 'Timer' button again to access other parameters
5. To change the current value of the selected parameter, press 'Up' or 'Down' arrow key to select a new value. Press
'Timer' button to assign the newly selected value and access other parameters.
6. Once the parameter values have been checked/changed, let the panel remain idle for a few seconds to revert to
the default (time) display.
D. SETTING TIME AND HEAT PUMP OPERATING PERIODS
Time can be set in 24-hour HH:MM format. To set the time, press the 'Clock' button. The hour (HH) parameter should
start flashing. Press 'Up' or 'Down' arrow key to assign the hour value. Press 'Clock' button again. The minutes (MM)
parameter should start flashing. Press 'Up' or 'Down' arrow key to assign the minute value. Press 'Clock' button again.
Heat Pump Timer Function and Operating Periods
The timer function is active in ECON MODE ONLY. You may set up to three time periods (P1, P2 and P3) for the heat
pump to operate. Each time period has a user assigned start time and stop time. The heat pump will be on during the
assigned time periods only. Heat pump will turn off when water set temperature is reached, even if the unit is within
an assigned time period (water temperature controls override timer settings). To assign or change time periods:
Ensure that the clock is set to the right time
1. Press Timer button. The start time (Hours) for P1 will start flashing – use ARROW PADS to assign Hours for P1 start
time. Press Timer button again to move to Minutes for P1 start time (EXAMPLE: If you want P1 to start at 7:15 am,
select 07 using arrow pad keys. Press Timer button and select 15 using arrow pad keys).
2. Press the Timer button to move to P1 end time and assign values as done in Step b.
3. Press the Timer button to move to P2 (and P3) time settings – repeat Steps b and c.
IMPORTANT
To activate the heat pump in Econ mode, it is necessary that at least one time period is active.
Can I override the timer settings and let the heat pump run as needed (based on water temperature settings) in Econ
mode?
To run the heat pump independently of the timer settings, set any time period (P1, P2 or P3) to start at 00:00 and stop
at 23:59. The heat pump will now be controlled only by the water temperature sensor and the heat pump can start or
stop any time during the day based on hot water demand and temperature control settings.
Do I need to assign values to all three time periods?
No, you can choose to assign values to as many time periods as you require and leave the others as 'inactive'. Assigning
00:00 to both start and stop times for a time period will render the time period inactive.
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