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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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TAblE Of CONTENTS INSTAllATION Installation location recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . Outdoor temperature sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 . Thermostat mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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INSTAllATION INSTAllATION lOCATION RECOmmENDATIONS Thermostat should be mounted: Do not mount thermostat: • On an interior wall, in a frequently occupied space. • Behind doors, in corners, or other dead air spaces. • Approximately 5‘ above floor . • In direct sunlight, near lighting fixtures, or other appliances that give off heat. • At least 18” from outside wall. • On an outside or unconditioned area wall. • Thermostat can b
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INSTAllATION OUTDOOR TEmpERATURE SENSOR (OpTIONAl) Outdoor temperature can be measured by attaching an • Install 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 . • Mount above snow line. Heat pump models can use the outdoor temperature to • Mount at least 3’ away from exhaust vents and effectively utilize the heat
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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 V AC must be connected in order for the system fault and emergency heat indicators to operate . The thermostat has a memory back
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INSTAllATION wIRINg TERmINAl wire specifications RC – 24 V AC supply cooling* R – 24 V AC supply heating* 18-24 gauge thermostat wire w – 1st stage heat / auxiliary Y – 1st stage cooling / compressor Installation notes g – Fan • Ensure power at the HV AC equipment is off. C – Common (optional when powered by batteries) • Loosen screw terminals, insert stripped wire and S1 & S2 – outdoor temperature sensor (optional) re-tighten. O/b – Rev
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INSTAllATION wIRINg – mODEl 8463 & 8444 SINglE wIRINg – mODEl 8463 & 8444 TwO TRANSfORmER (USE U j mpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) RC R W Y G C S1 S2 RC R W Y G C S1 S2 7 61000652C 8400 Tstat Install.indd 7 10/13/09 11:08:58 AM TRANSFORMER JUMPER HEATING COOLING FAN OUTDOOR TEMP SENSOR COOLING TRANSFORMER HEATING TRANSFORMER HEATING COOLING FAN OUTDOOR TEMP SENSOR
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INSTAllATION wIRINg – mODEl 8465 & 8446 SINglE wIRINg – mODEl 8465 & 8446 TwO TRANSfORmER (USE jUmpER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) RC R W Y G C S1 S2 O/B L RC R W Y G C S1 S2 O/B L 8 61000652C 8400 Tstat Install.indd 8 10/13/09 11:08:58 AM TRANSFORMER JUMPER AUX HEATING COMPRESSOR FAN OUTDOOR TEMP SENSOR REVERSE VALVE FAULT DETECT HEAT PUMP TRANSFORMER AUX HEATING TRANSFORMER AUX HEATING COMPRESSOR FAN OUTDOOR TEMP SENSOR REVERSE VALVE FAULT DETECT
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INSTAllATION wIRINg – mODEl 8466 & 8448 SINglE wIRINg – mODEl 8466 & 8448 T wO TRANSfORmER (USE jUmpER wIRE) TRANSf ORmERS (REmOVE U j mp ER wIRE) fOR HEAT/COOl SYSTEm fOR HEAT/COOl SYSTEm RC R W Y G C S1 S2 O/B L W2 Y2 RC R W Y G C S1 S2 O/B L W2 Y2 9 61000652C 8400 Tstat Install.indd 9 10/13/09 11:08:58 AM TRANSFORMER JUMPER 1st HEATING 1st COOLING FAN OUTDOOR TEMP SENSOR NOT USED NOT USED 2nd HEATING 2nd COOLING COOLING HEATING TRANSFORMER TRANSFORMER 1st HEATING 1st COOLING FAN OUTD
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INSTAllATION wIRINg – mODEl 8466 & 8448 SINgl E wIRINg – mODEl 8466 & 8448 T wO TRANSf ORmER (USE U j mp ER wIRE) TRANSfORmERS (REmOVE jUmpER wIRE) fOR HEAT pUmp SYSTEm fOR HEAT pUmp SYSTEm RC R W Y G C S1 S2 O/B L W2 Y2 RC R W Y G C S1 S2 O/B L W2 Y2 10 61000652C 8400 Tstat Install.indd 10 10/13/09 11:08:59 AM HEAT PUMP TRANSFORMER JUMPER 1st AUX HEATING 1st COMPRESSOR FAN OUTDOOR TEMP SENSOR REVERSE VALVE FAULT DETECT 2nd AUX HEATING 2nd COMPRESSOR HEAT PUMP HEATING TRANSFORMER TRANSF
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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 or to change the setting . system settings press
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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 . Sw1 HEA T PUMP HEA T/COOL 12 61000652C 8400 Tstat Install.indd 12 10/13/09 11:08:59 AM
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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° : No offset applied 03 Offset temperature for internal sensor –4°F to +4°F (–2°C to +2°C) 0 : Auto mode is disabled 04 Auto mode 1 :
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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 Integral
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SETUp & TESTINg SYSTEm SETUp INSTRUCTIONS (CONTINUED) System setting Setting range, default in bold 16 Low Balance Pt. (8446, 8448HP , 8465, 8466HP) 20°f (–7°C) System setting 05 must be enabled 1°F to 35°F (–17°C to 1°C) or “OFF” to disable 17 High Balance Pt. (8446, 8448HP , 8465, 8466HP) 60°f (16°C) System setting 05 must be enabled 40°F to 80°F (4°C to 27°C) or “OFF “ to disable 0 – 5/2 program (weekdays and weekends) 19 Program form
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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, 8
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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 and 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 di
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SETUp & TESTINg Test steps for 8444 & 8463 System Setting Display (Output) 01 01 01 Step Key Input #2 HEATINg COOlINg f AN ON ON (w) ON (Y) (g) 0 : Gas ON [UP] #50 Heat 1 : Elec ON ON [DOWN] [UP] ON ON #51 Cool [DOWN] [UP] ON #52 Fan [DOWN] 18 61000652C 8400 Tstat Install.indd 18 10/13/09 11:09:01 AM
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SETUp & TESTINg Test steps for 8448HC & 8466HC System Setting Display (Output) 01 02 01 02 01 Step Key Input #2 HEATINg HEATINg COOlINg COOlINg f AN ON ON (w) ON (w2) ON (Y) ON (Y2) (g) 0 : Gas ON 1st [UP] 1 : Elec ON ON #50 Heat 0 : Gas ON ON 2nd [UP] 1 : Elec ON ON ON [DOWN] 1st [UP] ON ON #51 Cool 2nd [UP] ON ON ON [DOWN] [UP] ON #52 Fan [DOWN] 19 61000652C 8400 Tstat Install.indd 19 10/13/09 11:09:01 AM
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SETUp & TESTINg Test steps for 8446 & 8465 System Setting Display (Output) 01 AUX 01 01 Step Key Input #2 #12 HEATINg COOl/HEAT f AN ON O/b ON (w) ON (Y) (g) 0 : Gas ON [UP] #50 Aux 1 : Elec ON ON [DOWN] 0 : O ON ON ON [UP] 1 : B ON ON #51 Cool 0 : O ON [DOWN] 1 : B 0 : O ON ON [UP] 1 : B ON ON ON #52 Heat 0 : O [DOWN] 1 : B ON [UP] ON #53 Fan [DOWN] 20 61000652C 8400 Tstat Install.indd 20 10/13/09 11:09
