AprilAire 61000652C 8400 Tstat - Manuals

5 THERmOSTAT mOUNTINg 1. Remove the back of the thermostat, by pressing the tab on the bottom of the unit. 2. Pull wires through the opening on the back of the thermostat . 3. Position and level the back of the thermostat on wall and mark the hole locations with a pencil . 4. Drill 1/4” holes & ...

10 INSTAllATION wIRINg – mODEl 8466 & 8448 SINglE TRANSfORmER (USE jUmpER wIRE) fOR HEAT pUmp SYSTEm 1st AUX HEA TING 1st COMPRESSOR FA N REVERSE VA LV E FA UL T DETECT 2nd AUX HEA TING 2nd COMPRESSOR OUTDOOR TEMP SENSOR HEA T PUM P TRANSFORMER C G Y W R L S1 S2 O/B W2 Y2 RC JUMPE R 1st AUX HEA ...

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 ...

14 SETUp & TESTINg System setting Setting range, default in bold 09 1st stage differential 1°f (0.5°C) 1°F to 4°F (0.5°C to 2°C) 10 2nd stage differential (8448, 8466) 1°f (0.5°C) 1°F to 4°F (0.5°C to 2°C) 11 3rd stage differential (8448HP, 8466HP) 1°f (0.5°C) 1°F to 4°F (0.5°C to 2°C) 12 Revers...

15 SETUp & TESTINg System setting Setting range, default in bold 16 Low Balance Pt. (8446, 8448HP, 8465, 8466HP) System setting 05 must be enabled 20°f (–7°C) 1°F to 35°F (–17°C to 1°C) or “OFF” to disable 17 High Balance Pt. (8446, 8448HP, 8465, 8466HP) System setting 05 must be enabled 60°f (1...

19 SETUp & TESTINg Test steps for 8448HC & 8466HC Step Key Input System Setting Display (Output) #2 01 HEATINg ON (w) 02 HEATINg ON (w2) 01 COOlINg ON (Y) 02 COOlINg ON (Y2) 01 fAN ON (g) #50 Heat 1st [UP] 0 : Gas ON 1 : Elec ON ON 2nd [UP] 0 : Gas ON ON 1 : Elec ON ON ON [DOWN] #51 Cool 1st...

22 QUICK REfERENCE TO CONTROlS & DISplAY NON-pROgRAmmAblE mODElS (8444, 8446, 8448) NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF. CURRENT INDOOR TEMPERATURE SYSTEM MODE SETTING FAN SETTING SYSTEM MODE FAN SETTING BATTERY DOOR MESSAGE CENTER LOW BATTERY WARNING...

24 THERmOSTAT fEATURES All 8400 SERIES THERmOSTATS • Large, clear, backlit display is easy to read – even in the dark . • Displays room temperature, temperature setting, and optional outdoor temperature . • Dual power option (Battery or 24 VAC).• Front battery door access for fast, easy replacement....

25 TROUblESHOOTINg DISplAY IS blANK • Check circuit breaker and reset if necessary.• Make sure power switch at heating & cooling system is on . • Make sure furnace door is closed securely.• If thermostat is battery powered, make sure fresh AA alkaline batteries are correctly installed. TEmpERATU...

27 SpECIfICATIONS Electrical Operating voltage 24 VAC (18 – 30 VAC) Current Maximum: 2.5A (total), 1.0A (single output)Maximum surge current: 5A Power supply Dual power. Can be battery or 24 VAC powered.When both the sources are available, battery will be used as back up power. Battery power Battery...

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) Temperature setting range Heat: 45° to 90°F (7° to 32°C)Cool: 50° to 99°F (...