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Manafacture: Aprilaire File size: 444.82 kb File name: Language of manual:

9. Return the Mode switch to the Off position to stop the cool call. MODELS 8346 & 8365 ONLY 10. Slide the Mode switch to the E-Heat position. 11. Use the ADJUST – Up button to raise the temperature 2°-3° above the current room temperature. The W2 and G terminals will energize, “E-HEAT” on the display will begin to flash and the heating equipment should start. MODE Cool • Off • Heat MODE Cool • Off • Heat • E-Heat SU ROOM AM F SETOVERRIDE Flashes on Heat Call ADJUST E-HEAT 12. Return the Mode switch to the Off position to stop the heat call. Step 9. Set up temperature scale, differential, offset and Water Panel/filter change indicators 1. Slide the Mode switch to the Off position. 2. Press and hold both the ADJUST – Up and Down buttons until “ROOM” and “OFF” are no longer displayed. ADJUST Press and Hold Simultaneously for Three (3) Seconds 3. °F/°C – Use the ADJUST – Up button to toggle between °F and °C. Press the LIGHT button when desired scale has been selected. F C LIGHT ADJUST 4. Differential Setting (d1) – The unit is shipped with this set to 1(°). This refers to how much the temperature will swing during control. Use the ADJUST – Up or ADJUST – Down button to change this to 1°, 2° or 3°. A higher differential will allow more temperature swing and fewer, longer equipment cycles. Press the LIGHT button when the desired differential has been set. LIGHT ADJUST OR ADJUST 5. Second Stage Differential Setting (d2 – MODELS 8348 & 8366 ONLY) – This setting controls how far from the first stage differential setting the temperature will be allowed to fall/rise before initiating second stage. LIGHT ADJUST OR ADJUST 6. Temperature Offset (OF) – All thermostats are factory calibrated to be within 1° of true temperature. Offset is available to allow for agreement with field temperature measuring instruments. Use the ADJUST – Up or ADJUST – Down button to change the offset value between –4° and +4°. Press the LIGHT button when the desired offset value has been set. LIGHT ADJUST OR ADJUST 7. Water Panel Change Indicator Feature – Use this feature if the home has a whole house humidifier such as an Aprilaire Humidifier. This feature will remind the homeowner when it is time to change the Water Panel. Use the ADJUST – Up or ADJUST – Down button to set the number of months until the first indication. The first indication should occur in fall (near October). The indicator will then show again every 52 weeks to remind the homeowner to change the Water Panel in their humidifier. Set the value to “OFF” to disable this feature. Press the LIGHT button when the Water Panel indicator value has been set. LIGHT ADJUST WATER PANEL CHANGE WATER PANEL CHANGE 8. Humidifier Type – This feature will only be displayed if the Water Panel Change value is not set to “OFF”. Use the ADJUST – Up or ADJUST – Down button to set this value to “1” if the home has an Aprilaire Model 400 whole house humidifier. The Water Panel in the Model 400 should be changed twice per season and this feature will cause the Water Panel Change Alert to appear on the display 90 days after the first alert. For example, if the Water Panel Change Alert value is set to show the first alert in October, then a second alert will appear in Januar...

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