50HE,HJ
DCV Minimum and Maximum Position
To check the DCV minimum and maximum position:
1.Make sure EconoMi$er IV preparation procedure has been performed.
2.Connect a
3.Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.
4.Turn the DCV Maximum Position potentiometer to fully CCW. The actuator should drive fully closed.
5.Turn the Minimum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.
6.Turn the Minimum Position Potentiometer fully CW. The actuator should drive fully open.
7.Remove the jumper from TR and N. The actuator should drive fully closed.
8.Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.
Supply-Air Input
To check
1.Make sure EconoMi$er IV preparation procedure has been performed.
2.Set the Enthalpy potentiometer to A. The Free Cool LED turns on. The actuator should drive to between 20 and 80% open.
3.Remove the 5.6
4.Remove the jumper across T and T1. The actuator should drive fully closed.
5.Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.
Economi$er IV Troubleshooting Completion
This procedure is used to return the EconoMi$er IV to operation. No troubleshooting or testing is done by performing the following procedure.
1.Disconnect power at TR and TR1.
2.Set enthalpy potentiometer to previous setting.
3.Set DCV maximum position potentiometer to previous setting.
4.Set minimum position, DCV set point, and exhaust potentiometers to previous settings.
5.Remove
6.Remove 1.2
7.Remove jumper from TR to N.
8.Remove jumper from TR to 1.
9.Remove 5.6
10.Remove jumper from P to P1. Reconnect device at P and P1.
11.Apply power (24 vac) to terminals TR and TR1.
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