Aprilaire 8400 Series Safety & Installation Instructions
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Aprilaire 8400 Series Safety & Installation Instructions

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See also: Owner's Manual , Instruction and Installation Manual
8400 Series Thermostats
Safety &
Installation
Instructions
READ AND SAVE THESE INSTRUCTIONS
61000652C 8400 Tstat Install.indd 1
10/13/09 11:08:56 AM

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  • Page 1 8400 Series Thermostats Safety & Installation Instructions READ AND SAVE THESE INSTRUCTIONS 61000652C 8400 Tstat Install.indd 1 10/13/09 11:08:56 AM...

  • Page 2: Table Of Contents

    TAblE Of CONTENTS INSTAllATION Installation location recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Outdoor temperature sensor (optional) .

  • Page 3: Installation Location Recommendations

    INSTAllATION INSTAllATION lOCATION RECOmmENDATIONS Thermostat should be mounted: 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.

  • Page 4: Outdoor Temperature Sensor (Optional)

    INSTAllATION OUTDOOR TEmpERATURE SENSOR (OpTIONAl) Outdoor temperature can be measured by attaching an • I nstall on side of building out of direct sunlight 8052 sensor to the S1 and S2 terminals. System setting (north side recommended) . #05 (Remote sensor) is used to enable sensor. • M ount above snow line. 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.

  • Page 5: Thermostat Mounting

    INSTAllATION THERmOSTAT mOUNTINg pOwER & RESET OpTIONS The thermostat is dual power. It can either be AC or battery powered, or both (to provide backup power for the clock). Batteries are optional if the thermostat was connected to AC power when installed. For heat pump models (8446, 8448HP, 8465, 8466HP) 24 VAC must be connected in order for the system fault and emergency heat indicators to operate . The thermostat has a memory backup that saves the thermostat’s settings in case of a power interruption. The reset button located under the battery cover can be used to reset the thermostat back to factory defaults. The system settings will also be reset back to defaults. 1. R emove the back of the thermostat, by pressing the 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).

  • Page 6: Wiring Terminal

    INSTAllATION wIRINg TERmINAl wire specifications RC – 24 VAC supply cooling* R – 24 VAC supply heating* 18-24 gauge thermostat wire w – 1st stage heat / auxiliary Y – 1st stage cooling / compressor Installation notes g – Fan • E nsure power at the HVAC equipment is off. C – Common (optional when powered by batteries) • L oosen screw terminals, insert stripped wire and S1 & S2 – outdoor temperature sensor (optional) re-tighten. O/b – Reversing valve • P ush the excess wire back into the opening and plug l – System fault indicator the wall opening to prevent drafts.
  • Page 7 INSTAllATION wIRINg – mODEl 8463 & 8444 SINglE wIRINg – mODEl 8463 & 8444 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) S1 S2 S1 S2 61000652C 8400 Tstat Install.indd 7 10/13/09 11:08:58 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 61000652C 8400 Tstat Install.indd 8 10/13/09 11:08:58 AM...
  • Page 9 INSTAllATION wIRINg – 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 61000652C 8400 Tstat Install.indd 9 10/13/09 11:08:58 AM...
  • Page 10 INSTAllATION wIRINg – mODEl 8466 & 8448 SINglE wIRINg – 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 61000652C 8400 Tstat Install.indd 10 10/13/09 11:08:59 AM...

  • Page 11: Setup & Testing

    SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS The following instructions show how to enter the system setup menu and change settings. The table on the following pages lists the settings and their details. Default settings are shown in bold . Some settings are only available to certain models, and some are specific to thermostats set to heat pump mode. How to enter the system setup menu to change press to change the setting . 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...
  • 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. Switch SW1 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 SW1 . HEAT PUMP HEAT/COOL 61000652C 8400 Tstat Install.indd 12 10/13/09 11:08:59 AM...
  • Page 13 SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS (CONTINUED) System setting Setting range, default in bold 0 : heat/cool 00 Equipment type (8466, 8448) (Set by Sw1) 1 : heat pump 0 : fahrenheit 01 Temperature scale 1 : Celsius 0 : gas or oil furnace (Equipment controls fan) 02 Fan control in heating 1 : Electric (Thermostat controls fan) 0°...
  • Page 14 SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS (CONTINUED) System setting Setting range, default in bold 1°f (0.5°C) 09 1st stage differential 1°F to 4°F (0.5°C to 2°C) 1°f (0.5°C) 10 2nd stage differential (8448, 8466) 1°F to 4°F (0.5°C to 2°C) 1°f (0.5°C) 11 3rd 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, 8466HP, 8465, 8466HP) 1 – O/B energized in heating (B) 13 I ntegral factor period (P+I control)* 4 minutes 1 to 5 minutes or “OFF” to disable Set to OFF for proportional control only...
  • Page 15 SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS (CONTINUED) System setting Setting range, default in bold 16 L ow Balance Pt. (8446, 8448HP, 8465, 8466HP) 20°f (–7°C) 1°F to 35°F (–17°C to 1°C) or “OFF” to disable System setting 05 must be enabled 17 H igh Balance Pt. (8446, 8448HP, 8465, 8466HP) 60°f (16°C) 40°F to 80°F (4°C to 27°C) or “OFF “ to disable System setting 05 must be enabled 0 – 5/2 program (weekdays and weekends) 19 Program format (8463, 8465, 8466) 1 – 5/1/1 program (Weekdays, Sat. and Sun.) 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...

  • Page 16: System Test Mode

    SETUp & TESTINg SYSTEm TEST mODE The system test mode is used to test a system after installation. The outputs of the thermostat can be manually activated one at a time to test their function. The following instructions show how to enter the test mode and turn outputs on and off . 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)
  • Page 17 SETUp & TESTINg SYSTEm TEST mODE (CONTINUED) How to enter the system test menu press to turn on the output (01). For multi stage output, press again to turn on the 2nd stage (02). press repeatedly until system is set to 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 .
  • Page 18 SETUp & TESTINg 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] 61000652C 8400 Tstat Install.indd 18 10/13/09 11:09:01 AM...
  • Page 19 SETUp & TESTINg Test steps for 8448HC & 8466HC System Setting Display (Output) Step 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]...
  • Page 20 SETUp & TESTINg Test steps for 8446 & 8465 System Setting Display (Output) 01 AUX Step Key Input 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...
  • Page 21 SETUp & TESTINg Test steps for 8448Hp & 8466Hp System Setting Display (Output) 01 AUX 02 AUX Step Key Input HEATINg HEATINg COOl/HEAT COOl/HEAT fAN ON ON (w) ON (w2) ON (Y) ON (Y2) 0 : Gas 1st [UP] 1 : Elec #50 Aux 0 : Gas 2nd [UP] 1 : Elec [DOWN] 0 : O...

  • 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. 61000652C 8400 Tstat Install.indd 22 10/13/09 11:09:02 AM...

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

    QUICK REfERENCE TO CONTROlS & DISplAY pROgRAmmAblE mODElS (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. 61000652C 8400 Tstat Install.indd 23 10/13/09 11:09:02 AM...

  • Page 24: Thermostat Features

    THERmOSTAT fEATURES All 8400 SERIES THERmOSTATS pROgRAmmAblE mODElS ONlY (8463, 8465, 8466) • L arge, clear, backlit display is easy to read – even • S eparately programmable weekday/weekend in the dark . schedules . • D isplays room temperature, temperature setting, and • E asy to use temperature control can override optional outdoor temperature . program schedule at any time .

  • Page 25: Troubleshooting

    TROUblESHOOTINg DISplAY IS blANK HEATINg SYSTEm DOES NOT RESpOND (“HEATINg” AppEARS ON SCREEN) • C heck circuit breaker and reset if necessary. • C heck for 24 VAC at the equipment on the secondary • M ake sure power switch at heating & cooling side of the transformer between power and system is on . 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.
  • Page 26 TROUblESHOOTINg COOlINg SYSTEm DOES NOT RESpOND HEAT/COOl bOTH ON AT SAmE TImE (“COOlINg” AppEARS ON SCREEN) • C heck SW1 (Equipment Type), to make sure it is set • C heck for 24 VAC at the equipment on the secondary to match the installed heating/cooling equipment side of the transformer between power and (see page 12) . common. If voltage is not present, check the cooling • C heck to make sure heating and cooling wires are equipment to find the cause of the problem. not shorted together . • C heck for 24 VAC between the cooling terminal (Y) HEATINg EQUIpmENT IS RUNNINg IN and the transformer common. If 24 VAC is present, COOl mODE...

  • 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 61000652C 8400 Tstat Install.indd 27 10/13/09 11:09:03 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) RESEARCH PRODUCTS CORPORATION 61000652 10.09 P.O. BOX 1467 • MADISON, WI 53701-1467 • www.aprilaire.com B2204777C 61000652C 8400 Tstat Install.indd 28 10/13/09 11:09:03 AM...

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