Operation and Maintenance Manual, OnyX Sky Heat Recovery Units, 2022/01
Frapol Sp. z o.o. reserves the right to introduce changes without any prior notice.
Page
49
8.3
Controller operating modes
The controller modes for controlling the ventilation:
•
OPERATION
–
the controller controls the ventilation operation on the basis of the parameters set by the user
to achieve the desired temperature in the room.
•
OPERATION-Heating
–
first the controller selects the available heat source which can supply the warmest air
transferred to the heat exchanger, when temperatures of the external air are low, in order to maintain the pre-
set room temperature.
•
OPERATION-Cooling
–
first the controller selects the available heat source which can supply the coolest air
transferred to the heat exchanger, when temperatures of the external air are high, in order to maintain the
pre-set room temperature.
•
Exchanger cleaning
–
the controller switches on the cleaning mode, alternately switching on the supply air and
exhaust air fan with maximum power.
•
Defrosting
–
the controller carries out the process of defrosting the exchanger
–
the
master algorithm, when
the user has no influence on the operation parameters of the air ventilation unit.
•
Downtime
–
the controller stops ventilation.
•
Ventilation
–
the controller activates the ventilation function
8.4
Resetting the air filter counter
To reset the air filter counter, go to:
Menu → Heat Recovery
•
To reset the filter operation counter confirm by ticking
YES
NOTE
Clearing the air filter counter can be done without any intervention in the service menu
8.5
Temperature setpoint settings
•
Basic control panel
The HRU setpoint temperature is set in the menu:
Setpoint temperature settings
Additionally, it is possible to choose the sensor for controlling the setpoint temperature by using parameter
Primary
controller sensor
. Available sensors:
Supply air sensor, Exhaust air sensor, Panel sensor
. When selecting the panel sensor
with an additional panel attached to the module, set the individual
Panel address
. Leave the
Panel address
at the value
of 100 at one control panel.
•
Advanced control panel (optional equipment)
The temperature setpoint for the main operating mode selected by the user is set from the main screen by pressing
Additional settings related to the temperature setpoint to be maintained by the HRU during adjustment can be found in
the menu:
Temperature setpoint settings
Setting the sensor for the adjustment of the HRU temperature setpoint can be done in the
Primary adjustment sensor
parameter. Available sensors:
Supply air sensor, Exhaust air sensor, Panel sensor
. When selecting the panel sensor with
an additional panel attached to the module, set the individual
Panel address
. Leave the
Panel address
at the value of 100
at one control panel.
8.6
Time schedule
•
Basic control panel
The menu allows you to set up operation schedules for the HRU.
The
Schedules management
parameter in the menu
Schedules
is used for changing the HRU's operating modes at the
preset time. Set the parameter to
Yes
.
For the selected day of the week
Monday-Sunday,
5 operation ranges
(T1…T5)
of air handling unit can be set up. For
each range, use parameters
Start
,
Stop
(hours and minutes) to set the time of schedule activity, and select the operating
mode for the HRU in the preset time.
Use
to select one time range setting for the remaining days of the week. All
settings for the schedule can be cleared with the [Res] button.
