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Aprilaire 8348 manual

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Table of contents for the manual

  • Page 1

    MODEL 8344 HEA T/COOL NON-PROGRAMMABLE MODEL 8346 HEA T PUMP NON-PROGRAMMABLE MODEL 8348 HEA T/COOL MUL TI-ST AGE NON-PROGRAMMABLE MODEL 8363 HEA T/COOL 5/2 DA Y PROGRAMMABLE MODEL 8365 HEA T PUMP 5/2 DA Y PROGRAMMABLE MODEL 8366 HEA T/COOL MUL TI-ST AGE 5/2 DA Y PROGRAMMABLE Installation Manual Electronic Thermostats[...]

  • Page 2

    1 SPECIFICA TIONS Comfort Range 60°F – 80°F Comfort Control Accuracy ± 1 °F (applies to settings within Comfort Range) Operating Range 1 32°F – 99°F Maximum Control Accuracy ± 2°F T emperature Setting (Control) Range 50°F – 90°F heating; 60°F – 90°F cooling Switched Load V oltage 18 – 30 volts Maximum Operating Current 1.0 Amp[...]

  • Page 3

    THERMOST A T INST ALLA TION INSTRUCTIONS Step 1. Choose a location to mount the thermostat • Approximately 5 feet off the floor (refer to local codes for compliance with the Americans with Disabilities Act). • On an interior wall where the temperature is most representative of the zone being controlled by the thermostat. • At least 18 inches [...]

  • Page 4

    Step 3. Mount the thermostat on the wall There are two sets of mounting holes – one set for use when mounting to a junction box, another set for direct wall mounting. IMPORT ANT! TURN OFF POWER A T THE HVAC EQUIPMENT BEFORE PROCEEDING WITH THERMOST A T INST ALLA TION! Mounting the thermostat directly to the wall (without junction box) 1. Place th[...]

  • Page 5

    Mounting the thermostat to a junction box 1. Install the top j-box screw (not included), until the head is approximately 1/8” from the surface of the wall. 2. Slide the thermostat on to the top screw . 3. Install the bottom screw (not included) to finish the installation. Step 4. Set the ELEC/GAS switch to the proper position (Models 8344, 8348, [...]

  • Page 6

    Set the O/B reversing valve jumper in the proper position (Models 8346 and 8365 only) The thermostat comes with an O/B terminal which can be configured to be an ‘O’ terminal (for most heat pumps) or to be a ‘B’ terminal. Configure as an ‘O’ terminal if the heat pump reversing valve has heating as the default position, configure as a ‘[...]

  • Page 7

    APRILAIRE MODEL 8344 OR 8363 THERMOST A T FA N RELA Y 1ST ST AGE HEA T R FURNACE C G Y1 W1 1ST ST AGE COOL L1 L2 120 VA C 24 VA C 1ST STG COOL COOLING EQUIPMENT Y1 C LO HI W Y G RC RH HI opens at 100 ° F ± 9 ° F LO closes at 41 ° F ± 9 ° F AUT O ON GAS ELEC Step 5. Wire the thermostat IMPORT ANT! ENSURE THE POWER A T THE HVAC EQUIPMENT IS OFF[...]

  • Page 8

    7 FA N RELA Y 2ND ST AGE HEA T 1ST ST AGE HEA T R HEA T/BLOWER EQUIPMENT C G Y1 W1 Y2 W2 1ST ST AGE COOL 2ND ST AGE COOL L1 L2 120 VA C 24 VA C 1ST STG COOL 2ND STG COOL COOLING EQUIPMENT Y1 C Y2 APRILAIRE MODEL 8348 OR 8366 THERMOST A T LO HI W RC RH W2 Y Y2 G HI opens at 100 ° F ± 9 ° F LO closes at 41 ° F ± 9 ° F GAS ELEC AUTO ON Diagram 2[...]

  • Page 9

    Step 6. Install supplied batteries Install two new AA alkaline batteries (included). Do not mix old and new batteries Step 7. Reassemble the thermostat No tools required – simply snap the thermostat face back on the thermostat. 8 Y1 O/B W2 L C R 1ST STG COMP . REV VA LVE DEFROST SERVICE OUTDOOR HEA T PUMP UNIT FA N RELA Y AUX. HEA T R HEA T/BLOWE[...]

  • Page 10

    Step 8. Perform check-out 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. 3. Use the ADJUST – Up button to raise the temperature 2° - 3° above the current room temperature. “HEA T” on the display will begin to flash and the heat[...]

  • Page 11

    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. 8. MODELS 8348 & 8366 ONL Y – Lower th[...]

  • Page 12

    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. 3. °F/°C – Use the ADJUST – Up button to toggle between °F and °C. Press the LIGHT but[...]

  • Page 13

    6. T emperature 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[...]

  • Page 14

    9. Air Filter Change Indicator – Use this feature to remind the homeowner when an air filter change is needed. Use the ADJUST – Up and ADJUST – Down buttons to select the number of months between recommended filter changes. Use 1 or 3 for panel type filters and 6 or 12 for extended (pleated) media type filters. T ABLE 1 lists general recommen[...]

  • Page 15

    14 10. Weekend Events – Use this feature to set the number of events for the weekend program. The default value is 4 events (The E NERGY S TA R ® setting), which will result in the “LEA VE” and “RETURN” events to be used during programmed operation. If the owners schedule is such that the home or building is generally occupied during the[...]

  • Page 16

    Press the CURRENT TIME button to enter the minutes value and access the “day of the week” value. Use the ADJUST – Up and ADJUST – Down buttons to set the current day of the week. Press the CURRENT TIME button again to finish. The word “DONE” will appear on the display . As an E NERGY S TA R ® partner , the thermostat (Models 8363, 8365[...]