Aprilaire 8400 Series Installation Instructions Manual
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Aprilaire 8400 Series Installation Instructions Manual

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See also: Owner's Manual
8400 Series Thermostats
Safety &
Installation
Instructions
READ AND SAVE THESE INSTRUCTIONS
61000652D 8400 Tstat Install.indd 1
7/9/13 9:03 AM

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Summary of Contents for Aprilaire 8400 Series

  • Page 1 8400 Series Thermostats Safety & Installation Instructions READ AND SAVE THESE INSTRUCTIONS 61000652D 8400 Tstat Install.indd 1 7/9/13 9:03 AM...

  • Page 2: Table Of Contents

    Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 61000652D 8400 Tstat Install.indd 2...

  • Page 3: Installation Location Recommendations

    Do not mount thermostat: • O n an interior wall, in a frequently occupied space. • B ehind doors, in corners, or other dead air spaces. • A pproximately 5‘ above floor. • I n direct sunlight, near lighting fixtures, or other appliances that give off heat. • A t least 18” from outside wall. • O n an outside or unconditioned area wall. • T hermostat can be mounted to a vertical junction box. • I n the flow of a supply register, in stairwells, or near outside doors . • O n a wall with concealed pipes or ductwork. 61000652D 8400 Tstat Install.indd 3 7/9/13 9:03 AM...

  • Page 4: Outdoor Temperature Sensor (Optional)

    Heat pump models can use the outdoor temperature to • M ount at least 3’ away from exhaust vents and effectively utilize the heat pump: condensing lines . • W hen the outdoor temperature is less than the Low • M aximum wire length is 300’. Balance Point, the heat pump will be locked out and • D o not route wires along 120 VAC lines. only auxiliary heating will be used. • W hen the outdoor temperature is higher than the High Balance Point, the auxiliary heating will be locked out and only the heat pump will be used to provide heating. S1 S2 O/B W2 Y2 61000652D 8400 Tstat Install.indd 4 7/9/13 9:03 AM...

  • Page 5: Thermostat Mounting

    1. R emove the back of the thermostat, by pressing the The system settings will also be reset back to defaults. tab on the bottom of the unit. 2. P ull wires through the opening on the back of the thermostat . 3. P osition and level the back of the thermostat on wall and mark the hole locations with a pencil . 4. D rill 1/4” holes & insert supplied anchors (drywall only). 5. P lace back over anchors, insert and tighten screws. 6. S eal wire entry holes to prevent drafts affecting temperature readings . 61000652D 8400 Tstat Install.indd 5 7/9/13 9:03 AM...

  • Page 6: Wiring Terminal

    O/b – Reversing valve • P ush the excess wire back into the opening l – System fault indicator and plug the wall opening to prevent drafts. w2 – 2nd stage heat / auxiliary Y2 – 2nd stage cooling / compressor * Jumper between RC & R is used in single transformer systems (see wiring diagrams). S1 S2 O/B W2 Y2 61000652D 8400 Tstat Install.indd 6 7/9/13 9:03 AM...

  • Page 7: Wiring Diagrams

    INSTAllATION wIRINg – mODEl 8463 & 8444 SINglE wIRINg – mODEl 8463 & 8444 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) S1 S2 S1 S2 61000652D 8400 Tstat Install.indd 7 7/9/13 9:03 AM...
  • Page 8 INSTAllATION wIRINg – mODEl 8465 & 8446 SINglE wIRINg – mODEl 8465 & 8446 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) S1 S2 O/B S1 S2 O/B 61000652D 8400 Tstat Install.indd 8 7/9/13 9:03 AM...
  • Page 9 – mODEl 8466 & 8448 SINglE wIRINg – mODEl 8466 & 8448 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) fOR HEAT/COOl SYSTEm fOR HEAT/COOl SYSTEm S1 S2 O/B W2 Y2 S1 S2 O/B W2 Y2 61000652D 8400 Tstat Install.indd 9 7/9/13 9:03 AM...
  • Page 10 – mODEl 8466 & 8448 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) fOR HEAT pUmp SYSTEm fOR HEAT pUmp SYSTEm S1 S2 O/B W2 Y2 S1 S2 O/B W2 Y2 61000652D 8400 Tstat Install.indd 10 7/9/13 9:03 AM...

  • Page 11: Setup & Testing

    . system settings press to change to the next option. press repeatedly until system is set to OFF . press after the last setting. “DONE” will be press and hold for three seconds . displayed . The screen of the first setting will be displayed. The thermostat will save changes and return to Normal mode if no key is pressed for 20 seconds. To reset all system settings back to default, press the RESET button located under the battery door. SETTING VALUE SYSTEM SETTING NUMBER 61000652D 8400 Tstat Install.indd 11 7/9/13 9:03 AM...
  • Page 12 SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS (CONTINUED) Thermostat models 8448 & 8466 have the option of being used in heat pump or heat/cool systems. The equipment type switch located on the back of the thermostat’s face is used to select this. System setting number 00 will only be shown on these models to display the position of the equipment type switch. EQUIpmENT TYpE SwITCH HEAT PUMP HEAT/COOL 61000652D 8400 Tstat Install.indd 12 7/9/13 9:03 AM...
  • Page 13 1 to 5 minutes in 1 minute steps 2 minutes 07 Heating minimum off time 1 to 5 minutes in 1 minute steps 2 minutes 08 Equipment minimum on time 1 to 5 minutes in 1 minute steps 61000652D 8400 Tstat Install.indd 13 7/9/13 9:03 AM...
  • Page 14 11 3rd and 4th stage differential (8448HP, 8466HP) 1°F to 4°F (0.5°C to 2°C) 0 – O/b energized in cooling (O) 12 Reverse valve (8446, 8448HP, 8465, 8466HP) 1 – O/B energized in heating (B) 13 S tage rate* 1 to 5 or “OFF” to disable 3°f (2°C) 14 Deadband (auto mode) 2°F to 5°F (1°C to 3°C) 0 : Progressive recovery is disabled 15 Progressive recovery (8463, 8465, 8466) 1 : progressive recovery is enabled * A ccumulation of equipment run time in equipment staging determination. 1 = more rapid staging of equipment (comfort). 5 = slower staging of equipment (economy). 61000652D 8400 Tstat Install.indd 14 7/9/13 9:03 AM...
  • Page 15 20 Change air filter 1, 3, 6, 12 months or “OFF” to disable 21 C hange water panel** 1 to 12 months or “OFF” to disable Set number of months until reminder is required 0 : flow through type humidifier (1 reminder per season) 22 Humidifier type** 1 : Drain-less type humidifier (2 reminders per season) 23 Service dehumidifier 1 to 12 months or “OFF” to disable 24 Service HVAC 1 to 12 months or “OFF” to disable ** I f humidifier type is set to Drain-less, then the first reminder is based on the system setting 21, second reminder will activate 3 months later. If humidifier type is set to Flow through, then the first reminder is based on system setting 21, second reminder will activate 12 months later. 61000652D 8400 Tstat Install.indd 15 7/9/13 9:03 AM...

  • Page 16: System Test Mode

    . The charts on the following pages show all of the options for each model . The test steps are: Test Heat/Cool models Heat pump models Number 8444, 8463, 8448HC, 8466HC 8446, 8465, 8448Hp, 8466Hp Heating (W) (W2) Aux Heating (W) (W2) Cooling (Y) (Y2) Compressor Cooling (Y) (Y2) Fan (G) Compressor Heating (Y) (Y2) Fan (G) 61000652D 8400 Tstat Install.indd 16 7/9/13 9:03 AM...
  • Page 17 OFF . press to turn off the output (00). press and hold for three seconds . press to change to the next test step. The screen of the first test step #50 is displayed: press after the last test step. “DONE” will be displayed . The thermostat will return to Normal mode if no key is pressed in 20 seconds. FLASHES IF 24VAC SYSTEM TEST IS NOT PRESENT NUMBER MODE (SW1 SETTING 8448 & 8466 ONLY) OUTPUT STATUS 61000652D 8400 Tstat Install.indd 17 7/9/13 9:03 AM...
  • Page 18 Test steps for 8444 & 8463 System Setting Display (Output) Step Key Input HEATINg COOlINg fAN ON ON (w) ON (Y) 0 : Gas [UP] #50 Heat 1 : Elec [DOWN] [UP] #51 Cool [DOWN] [UP] #52 Fan [DOWN] 61000652D 8400 Tstat Install.indd 18 7/9/13 9:03 AM...
  • Page 19 Key Input HEATINg HEATINg COOlINg COOlINg fAN ON ON (w) ON (w2) ON (Y) ON (Y2) 0 : Gas 1st [UP] 1 : Elec #50 Heat 0 : Gas 2nd [UP] 1 : Elec [DOWN] 1st [UP] #51 Cool 2nd [UP] [DOWN] [UP] #52 Fan [DOWN] 61000652D 8400 Tstat Install.indd 19 7/9/13 9:03 AM...
  • Page 20 HEATINg COOl/HEAT fAN ON ON (w) ON (Y) 0 : Gas [UP] #50 Aux 1 : Elec [DOWN] 0 : O [UP] 1 : B #51 Cool 0 : O [DOWN] 1 : B 0 : O [UP] 1 : B #52 Heat 0 : O [DOWN] 1 : B [UP] #53 Fan [DOWN] 61000652D 8400 Tstat Install.indd 20 7/9/13 9:03 AM...
  • Page 21 1st [UP] 1 : Elec #50 Aux 0 : Gas 2nd [UP] 1 : Elec [DOWN] 0 : O 1st [UP] 1 : B 0 : O #51 Cool 2nd [UP] 1 : B 0 : O [DOWN] 1 : B 0 : O 1st [UP] 1 : B 0 : O #52 Heat 2nd [UP] 1 : B 0 : O [DOWN] 1 : B [UP] #53 Fan [DOWN] 61000652D 8400 Tstat Install.indd 21 7/9/13 9:03 AM...

  • Page 22: Quick Reference To Controls & Display

    QUICK REfERENCE TO CONTROlS & DISplAY NON-pROgRAmmAblE mODElS (8444, 8446, 8448) CURRENT INDOOR TEMPERATURE OUTDOOR TEMPERATURE (OPTIONAL) SYSTEM MODE SETTING TEMPERATURE SETTING EQUIPMENT STATUS SYSTEM MODE FAN SETTING DOWN HEAT pUmp mODElS ONlY EMERGENCY HEAT (RED) FAN SETTING SYSTEM FAULT (YELLOW) INDICATOR SHOWS THROUGH HOUSING QUICK REFERENCE CARD BATTERY DOOR MESSAGE CENTER LOW BATTERY WARNING NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF. 61000652D 8400 Tstat Install.indd 22 7/9/13 9:03 AM...

  • Page 23: Programmable Models (8463, 8465, 8466)

    (8463, 8465, 8466) CURRENT INDOOR TEMPERATURE CURRENT TIME OUTDOOR TEMPERATURE (OPTIONAL) SYSTEM MODE SETTING TEMPERATURE SETTING EQUIPMENT STATUS FAN SETTING SYSTEM MODE DOWN FAN SETTING HOLD PROGRAM HEAT pUmp mODElS ONlY EMERGENCY HEAT (RED) SYSTEM FAULT (YELLOW) CURRENT SCHEDULE INDICATOR SHOWS THROUGH HOUSING PERIOD QUICK REFERENCE CARD BATTERY DOOR MESSAGE CENTER LOW BATTERY WARNING NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF. 61000652D 8400 Tstat Install.indd 23 7/9/13 9:03 AM...

  • Page 24: Thermostat Features

    . • D ual power option (Battery or 24 VAC). • P rogressive recovery. Progressive Recovery feature • F ront battery door access for fast, easy replacement. allows the thermostat to activate the heating and • B uilt in compressor protection. cooling equipment prior to an event in order to reach • C irculation fan mode for air cleaning. the desired temperature at the start of the next scheduled event. • W ater panel, dehumidifier, air filter, and HVAC service indicators. • S ystem test mode. 61000652D 8400 Tstat Install.indd 24 7/9/13 9:03 AM...

  • Page 25: Troubleshooting

    . common. If voltage is not present, check the heating • M ake sure furnace door is closed securely. equipment to find the cause of the problem. • I f thermostat is battery powered, make sure fresh AA • C heck for 24 VAC between the heat terminal (W) alkaline batteries are correctly installed. and the transformer common. If 24 VAC is present, the thermostat is functional. Check the heating TEmpERATURE SETTINgS DO NOT CHANgE equipment to find the cause of the problem. • C heck for loose or broken wires between the Make sure heating and cooling temperatures are set to thermostat and the heating equipment. acceptable ranges: • Heat: 45° to 90°F (7° to 32°C). • Cool: 50° to 99°F (10° to 37°C). 61000652D 8400 Tstat Install.indd 25 7/9/13 9:03 AM...
  • Page 26 HEAT pUmp ISSUES COOl AIR IN HEAT mODE, “COOlINg” IS NOT DISplAYED OR wARm AIR IN COOl mODE • C hange the System Mode to Cool, and set • C heck System Setting #12 (Reversing Valve), to make the temperature level below the current room sure it is properly configured for your system (see temperature . page 11) . 61000652D 8400 Tstat Install.indd 26 7/9/13 9:03 AM...

  • Page 27: Specifications

    SpECIfICATIONS Environment Operating: 32° to 120°F (0° to 48.9°C) Temperature Shipping: -30° to 140°F (-34.4° to 60°C) Relative humidity Operating: 5% to 90% R.H. (non-condensing) Electrical Operating voltage 24 VAC (18 – 30 VAC) Maximum: 2.5A (total), 1.0A (single output) Current Maximum surge current: 5A Dual power. Can be battery or 24 VAC powered. Power supply When both the sources are available, battery will be used as back up power. Battery power: AA size alkaline battery x 2 Battery power Battery life: Approximately 1 year 61000652D 8400 Tstat Install.indd 27 7/9/13 9:03 AM...
  • Page 28 SpECIfICATIONS Thermal Outdoor temperature sensor Maximum distance: 300 feet Room temperature measurement Display range: 32° to 99°F (0° to 40°C) Outdoor temperature measurement Display range: -20° to 130°F (-30° to 55°C) Heat: 45° to 90°F (7° to 32°C) Temperature setting range Cool: 50° to 99°F (10° to 37°C) P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 www.aprilairepartners.com 61000652 7.13 B2204777D © 2013 Aprilaire – A division of Research Products Corporation 61000652D 8400 Tstat Install.indd 28 7/9/13 9:03 AM...

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