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

REV VALVE DEFROSTSERVICE FAN RELAY AUX. HEAT R HEAT/BLOWER EQUIPMENT C G W2 Y1 1ST STAGE COMPRESSOR L1L2120 VAC 24 VAC R G Y W2 O/B C L COOL HEAT LO ON AUTO CHECKAUX APRILAIRE MODEL 8346 OR 8365 THERMOSTAT REDBLKWHTYLWORGBLU BLU ORG YLW WHT GRN BLK RED ORG RED BLK GRN YLW WHT BLU REDBLUBLKWHTORGYLW NOTES: 1. Wire colors shown for reference only. 2. Common (C) connection requiredonly for thermostat LED operation. SEE NOTE 2 Step 6. Install supplied batteries Install two new AA alkaline batteries (included). Do not mix old and new batteries Step7. Reassemble the thermostat No tools required – simply snap the thermostat face back on the thermostat. Step 8. Perform check-out CAUTION The following procedure will turn on the heating and cooling equipment. Do not attempt to turn on the cooling equipment when the outdoor temperature is too low or the heat pump (heating) when the outdoor temperature is too high as compressor damage could occur. Consult the equipment manufacturer literature for safe operating temperatures. 1. Slide the Fan switch to the On position. The blower should come on. Return the Fan switch to the Auto position. 2. Slide the Mode switch to the Heat position. FAN Auto • On 3. Use the ADJUST – Up button to raise the temperature 2° - 3° above the current room temperature. “HEAT” on the display will begin to flash and the heating equipment should start. It may take a moment for the heating equipment to initiate the heating cycle. If the blower turns on immediately and this is unexpected, make sure the GAS/ELEC switch on the thermostat is set correctly (see Step 4, MODELS 8344, 8348, 8363 & 8366 ONLY). MODELS 8346 & 8365 – If cold air is coming out of the registers, the reversing valve terminal may need to be configured – see Step 4. MODE Cool • Off • Heat HEAT SU ROOM AM F SETOVERRIDE Flashes on Heat Call ADJUST 4. MODELS 8348 & 8366 ONLY – Raise the temperature an additional 2°-3° and confirm that the second stage of heat (W2) comes on after a 2 minute 1st stage minimum on-time. MODELS 8346 & 8365 ONLY – Raise the temperature an additional 2°-3° and confirm that the second stage of heat (W2) comes on in four (4) minutes. The green AUX LED located on top of the thermostat will light whenever the W2 terminal is energized. 5. Return the Mode switch to the Off position to stop the heat call. 6. Slide the Mode switch to the Cool position. 7. Use the ADJUST – Down button to lower the temperature 2°-3° below the current room temperature. “COOL” on the display will begin to flash and the cooling equipment should start. MODE Cool • Off • Heat SU ROOM AM F SETOVERRIDE Flashes on Cool Call COOLADJUST 8. MODELS 8348 & 8366 ONLY – Lower the temperature an additional 2°-3° and confirm that the second stage of cooling (Y2) comes on after four (4) minutes. 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 SETOVER...

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