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5. Return EconoMi$er IV settings and wiring to normal
afte r completi ng troubleshooting.
EconoMi$e r IV Troubleshooting
Completion
This procedure is used to return the E conoMi$er IV to
operat ion. 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 setpoint, and exhaust
potentiometers to previous settings.
5. Remove 620--ohm resistor from terminals SR and +.
6. Remove 1.2 kilo--ohm che ckout resistor from
terminals SO and +. If used, reconnect sensor from
terminals SO and +.
7. Remove jumper from TR to N.
8. Remove jumper from TR to 1.
9. Remove 5.6 kilo--ohm resistor from T and T1.
Reconnect wires at T and T1.
10. Remove jumper from P to P1. Reconnect device at P
and P1.
11. Apply power (24 vac) to terminals TR and TR1.
WIRING DIAGRAMS
See Fig. 79 and Fig. 80 for typical wiring diagrams.
C09199
Fig. 79 -- 548J Typical Unit Wiring Diagr am -- Power (08D, 208/230--3 --60)
548J