Programming hints
Startup
The macro use the startup flag, use the Startup macro or reset the flag to 0 by yourself after controller is started.
Whether you do not need one of the macro inputs, connect them to the value specified in the next table.
Inputs |
When not used set to: |
ERCCtrlSig |
|
T1_InletAirTemp |
999 |
T2_SupplyAirERC |
999 |
T3_ReturnAirTemp |
999 |
T4_ExhaustAirTmp |
999 |
SupFan_running |
1 |
ExtFan_running |
1 |
ERC_running |
1 |
Summer_Mode |
0 |
Energy efficiency calculation type
The macro can be used for:
If you need both efficiency values, use the macro twice and connect the right sensors.
If all 4 sensors are connected the macro calculates the supply air efficiency.
If one of the needed sensors is not connected, the respective output will display the invalid value "999".
Control signal input compensation
If the normal compensation factor
Sensor connection for supply air efficiency
The next picture shows the sensor connection for supply air efficiency calculation.
The macro will calculate the supply air efficiency, even if all 4 sensors are connected.
Sensor connection for extract air efficiency
The next picture shows the sensor connection for extract air efficiency calculation.
ATTENTION: The macro will calculate the supply air efficiency, even if all 4 sensors are connected.