Aprilaire 1700 Safety And Installation Instructions Manual page 13

SETTING THE AIR CYCLING TIME
• The "CYCLE TIME" potentiometer on the control (Figure 15) is used to set the
cycle time within the period you set in the previous step.
• The potentiometer settings range from "OFF" which is all the way counter-
clockwise, to "TEST" which is all the way clockwise. Within those two
extreme settings,
the air cycling can be set from 0 to 60 minutes of air cycling time. Here's how
this works: If you set the cycle period to 1 hour and the cycle time
potentiometer to 20 minutes, you will get 20 minutes of air cycling every hour.
DEHUMIDIFIER SYSTEM CHECKOUT
1. Check the wiring to the HVAC equipment.
2. Rotate the main control knob clockwise to the "TEST" position.
3. If all is set up properly, the dehumidifier blower will turn on. The compressor will turn on after the dehumidifier blower
has run for 30 seconds. After 1 minute the dehumidifier blower and compressor will shut off ("TEST" mode only).
4. If the dehumidifier blower does not activate in TEST mode, refer to the Troubleshooting Guide.
5. For ventilation (optional) test, be sure that 24 VAC is applied in series with the Aprilaire
(Model 6506) and connected to the "VENT DAMPER" terminals on the dehumidifier control.
6. Rotate the "CYCLE TIME" potentiometer clockwise to the "TEST" position.
7. If all is set up properly, the HVAC blower will turn on and the ventilation damper will open. Both should be audible to
the installer. The HVAC blower will remain on and the ventilation damper will remain open for 1 minute or until the
potentiometer is turned from the "TEST" position, whichever happens first.
8. If the optional ventilation damper or HVAC blower does not activate in TEST mode, refer to the Troubleshooting Guide.
FIGURE 15 (shown in Default Mode)
® Normally-Closed Damper
90-783
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