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6. HEAT RECOVERY WITH 2 STEPS PRE-HEATER 1STEP
Scenario
AFTER
Heat Recovery with 2 Steps Pre Heater 1 Step After Heater mode works according to set temepareture and control exhaust
ans supply fans and after heater. Pre-heater works according to fresh air sensor.
Temperature is measured by room thermostate
•
If room temperature is measured below set value, temperature will be increased by using after heater
•
If room temperature is measured above set value,, temperature will be dccreased by shutting down the steps
of after heater till room thermostate reads room temperature equal to set value
•
The fresh air temperature read by NtC10K sensor will be compared with set value of pre-heater to open or
shut down pre-heater.
Notes;
The electrical board comes with Scenario Number 4 as default.
To change the scenario please follow the steps defined in ''S.Changing the Scenarios''
Default Values for Pre Heater;
Parameter
Description
152
Pre Heater Hysterises Value
153
Pre Heater Step Difference as Temperature
160
Pre Heater Set Temperature
When Scenario 6 is selected , unit is ready to work as Heat Recovery with 2 Steps Pre heater 1 Step After Heater
The connection of the fresh air temperature sensor and the pre-heater should be done to the electrical board.
Below parameters should be set from the service parameters menu. Please follow the instructions described at
''I: Entering to Service Menu'' to enter Service Menu
Parameter
Description
154
Pre Heater Step Quantity
159
After Heater Step Quantity
422
After Heater Relay Selection
423
Pre Heater Relay Selection
AFTER HEATER
Default Value
Detail
Shows 20 on the screen
2
ºC
Shows 50 on the screen
5
ºC
Shows 50 on the screen
5
ºC
Value
Detail
2
1
2
1
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