37
2)
Yes. Continue.
5.
Is there 24VAC on the signal conditioner power terminals?
a.
No. Determine cause and rectify.
b.
Yes. Continue.
6.
Is there twice the DC voltage on the signal conditioner’s output terminals as
there is on the signal conditioner’s input terminals?
a.
No. Replace the signal conditioner.
b.
Yes. Continue.
7.
Is the DC voltage on the modulating valve terminals the same as the DC
voltage on the signal conditioner’s output terminals?
a.
No. There is a break in the wiring between the signal conditioner and
the modulating valve terminals. Determine cause and rectify.
b.
Yes. The electronics are working to this point. Continue.
8.
Is there sufficient temperature rise for the amount of outside air that is being
delivered to the space?
a.
No. Follow the instructions in this manual for placing the unit in
Manual damper control mode. Adjust the Man. Vent setpoint to 20%
outside air. Is there sufficient temperature rise for the amount of
outside air that is being delivered to the space?
1)
No. Contact the factory.
2)
Yes. Continue.
b.
Yes. Continue.
9.
Verify there is sufficient inlet gas pressure. Verify the modulating valve is
properly adjusted. Verify the burner orifices are clear of obstruction. Contact
the factory.
ALARM CODE:
Safety Circuit Open
PROBLEM:
The controller has detected a failure in the safety circuit. This
alarm does not disable the burner and does not affect actual operation of the unit in any
way. It merely provides status information to the user indicating that the safety circuit
tripped. Though the condition may have already been rectified automatically, the alarm
must be manually reset in order to be cleared from the system. Requiring the manual reset
gives the user the ability to know that the alarm occurred at some previous time should
they wish to further investigate the situation. See the Unit Resets section of this manual
for information on how to manually reset the alarm.
SOLUTION: If fan is not running (check prior alarm log)
1.
Is there a prior alarm such as Unit On/Fan Off or Airflow Sw?
a.
Yes. See the Diagnostic section for the previous alarm.
b.
No. Continue.
2.
Set Unit Mode to Manual. Did fan start?
a.
No. See the Diagnostic section for Unit On/Fan Off.
b.
Yes. Continue.
SOLUTION: If fan is running (check prior alarm log)
1.
Is the high temperature limit tripped?
a.
Yes. Determine cause and rectify.
b.
No. Continue.
2.
Is the low gas pressure switch closed?
a.
No. Verify the inlet gas pressure is as specified on the gas piping
diagram.
The low gas pressure switch setpoint should not be
adjusted.
The inlet gas pressure must remain as specified when unit
Содержание AireLogic
Страница 1: ...1 AireLogic Digital Control System User Manual Rev 04 11 13...
Страница 53: ...53 Appendix I 10K Thermistor Output Curve...
Страница 54: ...54 Appendix II Airflow Station Layout...
Страница 59: ...59 Typical Wiring Schematic RECIRCULATING WDF MODEL DIAGRAM...
Страница 60: ...60 NON RECIRCULATING WDF MODEL DIAGRAM...
