Instruction/ maintenance manual of the product 61000652C 8400 Tstat Aprilaire
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840 0 Series Thermostats READ AND SAVE THESE INSTRUCTIONS S a f e t y & Installation Instructions 61000652C 8400 Tstat Install.indd 1 10/13/09 11:08:56 AM.
2 Installation location recommendations ................................................................ 3 Outdoor temperature sensor (optional) ................................................................ 4 Thermostat mounting ...................
3 INST ALLA TION INST ALLA TION LOCA TION RECOMMENDA TIONS Thermostat should be mounted: • On aninterior wall,ina frequentlyoccupied space. • Approximately 5‘above floor . • At least18” fromoutsidewall.
4 OUTDOOR TEMPERA TURE SENSOR (OPTIONAL) Outdoortemperature canbe measuredby attachingan 8052sensor tothe S1and S2terminals.System setting #05(Remote sensor)is usedto enablesensor .
5 THERMOST A T MOUNTING 1. Remove theback ofthethermostat, bypressing the tabon thebottom ofthe unit. 2. Pull wiresthrough theopeningon theback ofthe thermostat.
6 WIRING TERMINAL Wire specifications 18-24gauge thermostatwire Installation notes • Ensure powerat theHVACequipmentis off. • Loosen screwterminals, insertstrippedwire and re-tighten.
7 WIRING – MODEL 8463 & 8444 SINGLE TRANSFORMER (USE JUMPER WIRE) INST ALLA TION C G Y W R S1 S2 RC HEA TING COOLING FAN OUTDOOR TEMP SENSOR JUMPER TRANSFORMER WIRING – MODEL 8463 & 8444 T.
8 WIRING – MODEL 8465 & 8446 SINGLE TRANSFORMER (USE JUMPER WIRE) INST ALLA TION AUX HEA TING COMPRESSOR FAN REVERSE VAL VE FAUL T DETECT OUTDOOR TEMP SENSOR JUMPER TRANSFORMER C G Y W R L S1 S2.
9 WIRING – MODEL 8466 & 8448 SINGLE TRANSFORMER (USE JUMPER WIRE) FOR HEA T/COOL SYSTEM INST ALLA TION 1st HEA TING 1st COOLING FAN 2nd HEA TING 2nd COOLING OUTDOOR TEMP SENSOR NOT USED NOT USED.
10 INST ALLA TION WIRING – MODEL 8466 & 8448 SINGLE TRANSFORMER (USE JUMPER WIRE) FOR HEA T PUMP SYSTEM 1st AUX HEA TING 1st COMPRESSOR FAN REVERSE VAL VE FAUL T DETECT 2nd AUX HEA TING 2nd COMP.
11 SYSTEM SETUP INSTRUCTIONS How to enter the system setup menu to change system settings Press repeatedly until system is set to OFF . Press and hold and for three seconds. Thescreen ofthe firstsetting willbedisplayed. SETUP & TESTING Press or to change the setting.
12 SETUP & TESTING SYSTEM SETUP INSTRUCTIONS (CONTINUED) Thermostatmodels 8448& 8466have theoptionof beingused inheat pumpor heat/coolsystems.Switch SW1 locatedon theback ofthe thermostat’ sface isused toselect this.
13 SETUP & TESTING System setting Setting range, default in bold 00 Equipmenttype (8466,8448) (Set by SW1) 0: heat/cool 1: heatpump 01 T emperature scale 0 : Fahr.
14 SETUP & TESTING System setting Setting range, default in bold 09 1st stage differential 1°F (0.5°C) 1°Fto 4°F(0.5°C to2°C) 10 2ndstage differential(8448, 8466) 1°F (0.5°C) 1°Fto 4°F(0.5°C to2°C) 11 3rdstage differential(8448HP ,8466HP) 1°F (0.
15 SETUP & TESTING System setting Setting range, default in bold 16 LowBalance Pt.(8446,8448HP , 8465,8466HP) Systemsetting 05must beenabled 20°F (–7°C) 1°Fto 35°F(–17°C to1°C) or“OFF”to disable 17 HighBalance Pt.
16 SYSTEM TEST MODE Thesystem testmode isused totesta systemafter installation.The outputsof thethermostatcan bemanually activatedone ata timeto testtheirfunction.
17 How to enter the system test menu Press repeatedly until system is set to OFF . Press and hold and for three seconds. Thescreen ofthe firsttest step#50is displayed: SYSTEM TEST MODE (CONTINUED) SETUP & TESTING Press to turnon theoutput (01).
18 SETUP & TESTING T est steps for 8444 & 8463 Step Key Input System Setting Display (Output) #2 01 HEA TING ON (W) 01 COOLING ON (Y) 01 FAN ON (G) #50Heat [UP] 0 :Gas ON 1: Elec ON ON [DOWN] #51Cool [UP] ON ON [DOWN] #52 Fan [UP] ON [DOWN] 61000652C 8400 Tstat Install.
19 SETUP & TESTING T est steps for 8448HC & 8466HC Step Key Input System Setting Display (Output) #2 01 HEA TING ON (W) 02 HEA TING ON (W2) 01 COOLING ON (Y) 02 COOLING ON (Y2) 01 FAN ON (G) #.
20 T est steps for 8446 & 8465 Step Key Input System Setting Display (Output) #2 #12 01 AUX HEA TING ON (W) 01 COOL/HEA T ON (Y) 01 FAN ON (G) O/B #50Aux [UP] 0 :Gas ON 1: Elec ON O.
21 T est steps for 8448HP & 8466HP Step Key Input System Setting Display (Output) #2 #12 01 AUX HEA TING ON (W) 02 AUX HEA TING ON (W2) 01 COOL/HEA T ON (Y) 02 COOL/HEA T ON (Y2) 01 FAN ON (G) O/B.
22 QUICK REFERENCE TO CONTROLS & DISPLA Y NON-PROGRAMMABLE MODELS (8444, 8446, 8448) NOTE: BACKLIGHT ISACTIVA TED WITHFIRST BUTTONPRESSAND AUTOMA TICALL Y TURNSOFF .
23 QUICK REFERENCE TO CONTROLS & DISPLA Y PROGRAMMABLE MODELS (8463, 8465, 8466) NOTE: BACKLIGHT ISACTIVA TED WITHFIRST BUTTONPRESSAND AUTOMA TICALL Y TURNSOFF .
24 THERMOST A T FEA TURES ALL 8400 SERIES THERMOST A TS • Large, clear ,backlit displayiseasy toread –even in the dark. • Displays roomtemperature, temperaturesetting,and optional outdoor temperature.
25 TROUBLESHOOTING DISPLA Y IS BLANK • Check circuitbreaker andresetif necessary . • Make surepower switchatheating &cooling system is on. • Make surefurnace doorisclosed securely .
26 TROUBLESHOOTING COOLING SYSTEM DOES NOT RESPOND (“COOLING” APPEARS ON SCREEN) • Check for24 V AC atthe equipmentonthe secondary sideof thetransformer betweenpower and common.
27 SPECIFICA TIONS Electrical Operatingvoltage 24 V AC (18– 30VAC) Current Maximum:2.5A (total),1.0A (singleoutput) Maximumsurge current:5A Power supply Dualpower . Canbe batteryor 24V ACpowered.
28 SPECIFICA TIONS Thermal Outdoor temperature sensor Maximumdistance: 300feet Roomtemperature measurement Displayrange: 32°to 99°F(0°to 40°C) Outdoor temperatu.
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