FCU - Heating Operation w/o Fan Ops

FCU - Heating Operation w/o Fan Ops

Testing Procedure

Pre-Conditions Check

Before testing is started, it must be verified that the FCU is running.
  • Verify that device is “Occupied”.
If this condition is not met, STOP the workflow and ARCHIVE.

Setup Testing Conditions

In order to ensure that testing is accurate, outside sources of heating and cooling need to be eliminated or minimized. If any of these conditions are applicable and not verified, then the testing will be aborted.
Stop Active Heating  Weight: 1/ 6
  • Verify that discharge temperature is within 5△°F [Heating - Delta] above mixed temperature
Stop Active Cooling   Weight: 1/ 6
  • Verify that discharge temperature is within 5△°F [Cooling - Delta] below mixed temperature

Test Heating

Test 3: Start Heating Operation Weight: 4/ 6
  • Command Heating to “ON”
  • Pass if zone temp raised by at least 5△°F [Heating - Delta] OR
  • Pass if discharge temp is greater than 28°F [DAT Heating Arb Threshold] 

Tuning Parameters

DisplayHint
Heating Start Command [100%]To what percentage do we want to test the opening operation.
Start Heating Weight [4]What is the weight on the overall test that we want to assign to this sequence. All sequences will sum up their weights and than each weight will be divided by this total.
Heating Stop Command [%]To what percentage do we want to test the closing operation.
Stop Heating Weight [1]What is the weight on the overall test that we want to assign to this sequence. All sequences will sum up their weights and than each weight will be divided by this total.
Stop Cooling Weight [1]What is the weight on the overall test that we want to assign to this sequence. All sequences will sum up their weights and than each weight will be divided by this total.
Cooling Stop Command [%]To what percentage do we want to test the closing operation.
Cooling - Delta [5△°F]The threshold tolerance for cooling. Delta between ZT and DAT.
Fan Max Threshold [5%]The maximum threshold (%) for a fan off status.
Fan Min Threshold [10%]The minimum threshold (%) for a fan on status.v
Reaction Time [240sec]How long to wait for the actuators to fully do their job.
Stabilization Time [60sec]How long to wait for the system to come to stability after we have given it an actuator command and the conditions have been fullfiled.
Measure After [60sec]How long to wait in seconds to start checking the feedback readings.
Heating - Delta [5△°F]The threshold tolerance for heating. Delta between ZT and DAT.
DAT Heating Arb Threshold [28°F]The DAT above which there would be indication of heating.
Fan Current Max Threshold [0.5Amp]The maximum threshold (Amps) for a fan off status.
Fan Current Min Threshold [1Amp]The minimum threshold (Amps) for a fan on status.