Model 8600 Universal
Touch Screen Thermostat
Safety &
Installation
Instructions
READ AND SAVE THESE INSTRUCTIONS
TAblE Of CONTENTS
INSTAllATION
Installation location recommendations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Outdoor temperature sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Remote temperature sensor (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Thermostat mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Power & reset options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Wiring terminal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Wiring diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
SETUp & TESTINg
Equipment type selection switch (SW1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Installer setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
System test menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
REfERENCES
Quick reference to controls & display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Thermostat features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
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INSTAllATION
REMOTE TEMpERATURE SENSOR (OpTIONAl)
A remote temperature sensor can be used if the thermostat has to be mounted in a concealed location. A 8051 flush
mount or 8053 surface mount remote temperature sensor can be attached to the T1 and T2 terminals and mounted
in a recommended area. The remote sensor must be enabled in the installer setup menu. When the remote sensor is
installed it overrides the internal sensor.
Remote temperature sensor should be mounted:
• On an interior wall, in a frequently occupied space.
• Approximately 5‘ above floor.
Do not mount remote sensor:
• Behind doors, in corners or other dead air spaces.
• 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.
• Using less than 300’ of wire.
• In the flow of a supply register, in stairwells, or near
outside doors.
• On a wall with concealed pipes or ductwork.
• Near 120 VAC lines.
C
B
O
Y
Y2
G
RC R W2 W
L
S2 S1 T1 T2
THERMOSTAT MOUNTINg
1. Remove the rear mounting plate from the thermostat.
2. Pull wires through the opening on the back of the
thermostat.
3. Position and level the mounting plate of the thermostat
on wall and mark the hole locations with a pencil.
4. Drill 1/4” holes and insert supplied anchors
(drywall only).
5. Place mounting plate over anchors, insert and tighten
screws.
6. Seal wire entry holes to prevent drafts affecting
temperature readings.
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 your thermostat was wired to run on AC power when installed.
For heat pump systems the C terminal must be connected to the common of the 24VAC transformer in order for the
system fault and emergency heat indicators to operate.
The thermostat has a memory backup that saves the thermostat settings in case of a power interruption. The system
settings will be retained but the clock will reset after 90 seconds with no battery or AC power.
The reset button located under the battery cover can be used to reset the thermostat to factory defaults. The system
settings will also be reset to default.
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INSTAllATION
wIRINg TERMINAl
C – Common (optional when powered by batteries)
b – Reversing valve1
O – Reversing valve1
C
B
O
Y
Y2
G
RC
R
W2
W
L
S2 S1 T1 T2
Y – 1st stage cooling / compressor
Y2 – 2nd stage cooling / compressor
g – Fan
RC – 24VAC supply cooling2
R – 24VAC supply heating2
wire specifications:
w2 – 2nd stage heat / auxiliary
w – 1st stage heat / auxiliary
18-24 gauge thermostat wire
l – System fault indicator (optional) (heat pump only)
S1 & S2 – outdoor temperature sensor (optional)
T1 & T2 – remote temperature sensor (optional)
1O and B terminals are both de-energized when system mode is
OFF or in AUTO when the heating and cooling equipment is idle.
Installation notes:
• Ensure power at the HVAC equipment is off.
• Loosen screw terminals, insert stripped wire and
re-tighten.
2Jumper between RC & R is used in single transformer systems
(see wiring diagrams).
• Push the excess wire back into the opening and plug
the wall opening to prevent drafts.
CONVENTIONAl HEAT/COOl
SINglE TRANSfORMER (USE JUMpER wIRE)
TwO TRANSfORMERS (REMOVE JUMpER wIRE)
C
B
O
Y
Y2
G
RC R W2 W
L
S2 S1 T1 T2
C
B
O
Y
Y2
G
RC R W2 W
L
S2 S1 T1 T2
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INSTAllATION
HEAT pUMp
SINglE TRANSfORMER (USE JUMpER wIRE)
TwO TRANSfORMERS (REMOVE JUMpER wIRE)
OR
OR
C
B
O
Y
Y2
G
RC R W2 W
L
S2 S1 T1 T2
C
B
O
Y
Y2
G
RC R W2 W
L
S2 S1 T1 T2
NOTE: “O” is active in cooling and “B” is active in heating.
SETUp & TESTINg
EQUIpMENT TYpE SElECTION SwITCH (Sw1)
This thermostat has 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 option.
This setting can also be checked in the Installer System
Settings under Equipment Type.
Sw1
HEAT/COOL
HEAT PUMP
HC
HP
Note: Thermostat reboots within 10 seconds after switch
position is changed.
HC
HP
INSTAllER SETUp MENU
HOw TO ENTER THE INSTAllER SETUp MENU TO CHANgE SYSTEM SETTINgS:
press [MODE] to set system to OFF.
press [MENU] to enter main menu.
press [NEXT] or [bACK] to page through the settings.
press or to adjust the setting.
press and hold [SETUp] for seven seconds, [INSTAll
SETUp] appears.
press [DONE] to save and exit, Or [CANCEl] to exit
without saving.
press [INSTAll SETUp] to enter installer setup menu.
The thermostat will discard changes and exit if nothing
is pressed within 60 seconds.
SETTING
DESCRIPTION
SETTING
NUMBER
To reset the installer settings to the default, reset the
thermostat by pressing the [RESET] key.
SETTING
OPTIONS
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SETUp & TESTINg
INSTAllER SYSTEM SETTINgS TAblE
The following table is the list of the settings and their details. Default settings are shown in bold. Some settings are
only available to thermostats set to heat pump mode.
System setting
Description
factory default setting (bold) and setting range
00. Equipment type
Equipment type is set by SW1
Heat/Cool
Heat Pump
01. Heat/Cool control Used to lockout heating or
Heat and Cool
Heat Only
Cool Only
setup
cooling outputs (only available in
Heat/Cool mode)
02. Equipment stages Number of stages of equipment
Single Stage
Multi Stage
03. Auxiliary heat
stages
Number of stages of auxiliary heat 1 Stage
equipment
2 Stages
04. Temperature scale Set the thermostat to Fahrenheit or fahrenheit
Celsius mode
Celsius
05. Fan control in
Determines if thermostat or
gas or oil heat (equipment controls fan)
Heating/Aux heat equipment controls fan in heating. Electric heat (thermostat controls fan)
selection
In heat pump applications, this is
also auxiliary heat selection.1
06. Extended fan –
Heat
Extends fan operation after heat
call ends
Disable
Enable (90 second extension)
07. Extended fan –
Cool
Extends fan operation after cool
call ends
Disable
Enable (90 second extension)
08. Internal sensor
offset
Field adjustment of internal
temperature sensor
0° : No offset applied
–4°F to +4°F (–2°C to +2°C)
09. Auto changeover
10. Remote sensor
11. Outdoor sensor
12. Compressor
Enable or disable Auto changeover Disable
mode
Enable
Select if remote sensor is attached No
or not
Yes
Select if outdoor sensor is
attached or not
No
Yes
Minimum off time for compressor
minimum off time protection
5 minutes
1 to 5 minutes
13. Heating minimum Minimum off time for heating
off time
2 minutes
1 to 5 minutes
14. Equipment
minimum on time
Minimum on time for heating and
cooling
2 minutes
1 to 5 minutes
15. Auto changeover
time
Minimum time between heating
and cooling calls
4 minutes
1 to 5 minutes
16. 1st stage
differential
1st stage differential
2nd stage differential
3rd stage differential
1°f (0.5°C)
1°F to 4°F (0.5°C to 2°C)
17. 2nd stage
differential
1°f (0.5°C)
1°F to 4°F (0.5°C to 2°C)
18. 3rd stage
differential
1°f (0.5°C)
1°F to 4°F (0.5°C to 2°C)
19. 4th stage
differential
4th stage differential
1°f (0.5°C)
1°F to 4°F (0.5°C to 2°C)
22. Screen lockout
Screen lockout level. (Override
lockout by holding [MENU] for 7
seconds)
Off : No lockout
Partial lockout
Full lockout
1In heat pump mode, this system setting is also the auxiliary heat setting. If utilizing a fossil fuel auxiliary heat system, set to Gas or Oil Furnace.
In this setting, the heat pump will lock out before the fossil fuel auxiliary heat comes on; eliminating the need for a dual fuel kit. If utilizing
electric auxiliary heat, set to Electric. In this setting, the heat pump and electric auxiliary heat are allowed to run simultaneously.
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SETUp & TESTINg
INSTAllER SYSTEM SETTINgS TAblE (CONTINUED)
System setting
Description
factory default setting (bold) and setting range
23. Partial lockout type
Select lockout type (only available Allow changes to fan Mode, System Mode and Setpoints
when screen lockout is set to
partial lockout)
Allow changes to Fan Mode and Setpoints only
Allow changes to Setpoints only
24. Max setpoint change Select setpoint limits (only
3° f or C (from current setpoint)
1° to 20° OFF indicates no setpoint changes
in lockout
available when screen lockout is
set to partial lockout)
25. Integral factor period Short period = more cycles per
2 minutes
(P+I control)
hour (comfort) Long period = less
1 to 5 minutes or “OFF” for proportional control only
cycles per hour (economical)
26. Deadband
Auto changeover mode dead band 3°f (2°C)
2°F to 9°F (1°C to 5°C)
27. Progressive recovery Enable or disable Progressive
recovery
Disable
Enable
28. Low balance point
29. High balance point
30. Program format
Outdoor temperature low balance 20°f (–6°C)
point (This option is only displayed 10°F to 50°F (-12°C to 9°C) or OFF to ignore
if the outdoor temperature sensor
is enabled)
Outdoor temperature high balance 65°f (18°C)
point (This option is only displayed 40°F to 65°F (3°C to 18°C) or OFF to ignore
if the outdoor temperature sensor
is enabled)
Select weekly program format
7-day (Mon, Tue, wed, Thu, fri, Sat, Sun)
5/1/1 (weekdays, Saturday and Sunday)
5/2 (weekdays and weekends)
non-programmable
31. Event configuration
32. Events per day
Setting for event naming
Residential
Commercial
Number of program events per
day.
Selects 4 events per day
Selects 2 events per day
33. Change air filter
alarm
The period for displaying the
“Change Air Filter” message
Off
1, 3, 6, 12 months or “OFF” to disable
34. Change water panel
alarm
Set number of months until the
first reminder is required. The
following reminders will occur
every 12 months for a flow through
humidifier, and 3/9 months for a
drainless humidifier
Off
1 to 12 months or “OFF” to disable
35. Humidifier type
Select humidifier type. Flow
through type gives a 12 month
reminder, and drainless gives a
3/9 month reminder.
flow through type humidifier (1 reminder per season)
Drain-less type humidifier (2 reminders per season)
36. Service dehumidifier The period for displaying the
Off
alarm
“Service Dehumidifier” message
1 to 12 months or “OFF” to disable
37. Service HVAC alarm
The period for displaying the
“Service HVAC” message
Off
1 to 12 months or “OFF” to disable
38. Constant backlight
39. Backlight intensity
40. Daylight savings
Enable constant, low intensity,
Disable
backlight when 24VAC is present. Enable
Backlight intensity as a
percentage of full on
100
0 – 100%
Enable or disable auto daylight
savings
OFF
March (second Sunday in March to the first Sunday
in November)
April (first Sunday in April to the last Sunday in October)
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SETUp & TESTINg
SYSTEM TEST MENU
The system test menu is used to test a system after installation. The outputs of the thermostat can be manually
activated to test their function. The instructions below show how to enter the test mode and turn outputs on and off.
HOw TO ENTER THE SYSTEM TEST MENU:
The test number is displayed on the upper left, and the
output state is displayed in the message center.
press [MODE] to set system to off.
press
output, press
press to turn off all the output (00).
to turn on the output (01). For multi stage
press and hold [fAN] and [MODE] for three seconds
to enter system test mode.
again to turn on the 2nd stage (02).
The screen of the first test step #60 is displayed:
press [bACK] or [NEXT] to change to the next test
step.
TEST NUMBER
MODEL
(SW1 SETTING)
FLASHES
IF 24VAC
IS NOT
When the last step (63) is done, press [NEXT]. The
message “installer test complete“ will display.
PRESENT
All minimum on and off timers will be reset after
returning from system test mode.
OUTPUT
STATE
Note: Second stage will only be displayed when the
thermostat is set to multi-stage mode.
STAGE
Test Number
System test
60
61
62
63
Heating equipment test
Cooling equipment test
Auxiliary equipment test (HP only)
Fan equipment test
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SETUp & TESTINg
SYSTEM TEST TAblES
Test 60: Heating Equipment Test
button
press
Equipment
Type
Heat
Type
Stages
w
w2
Y
Y2
g
O
b
Gas
Electric
NA
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
Heat Cool
NA
1st Up
ON
ON
press
Heat Pump
NA
ON
1
NA
ON
ON
ON
Heat Cool
Gas
ON
ON
2
2nd Up
press
Electric
NA
ON
ON
ON
1
2
ON
ON
Heat Pump
NA
ON
Test 61: Cooling Equipment Test
button
press
Equipment
Type
Stages
w
w2
Y
Y2
g
O
b
Heat Cool
NA
NA
1
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
1st Up
press
Heat Pump
Heat Cool
2
ON
ON
2nd Up
press
1
Heat Pump
2
Test 62: Auxiliary Equipment Test (HP only)
button
press
Equipment
Type
Heat
Type
w
w2
Y
Y2
g
O
b
Gas
Electric
Gas
ON
ON
ON
ON
ON
ON
ON
ON
1st Up
Heat Pump
Heat Pump
press
ON
ON
ON
ON
2nd Up
press
Electric
Test 63: Fan Equipment Test
button
press
w
w2
Y
Y2
g
O
b
1st Up
press
ON
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QUICK REfERENCE TO CONTROlS & DISplAY
HOME SCREEN
ROOM TEMPERATURE
CURRENT DAY
OUTDOOR TEMPERATURE
TEMPERATURE SETTING
FAN MODE
BUTTON
TEMPERATURE
ADJUSTMENT
FAN MODE
SETTING
SYSTEM MODE
BUTTON
HOLD BUTTON
(SETS OR CLEARS HOLD)
SYSTEM MODE
SETTING
HEAT pUMp MODE ONlY
EMERGENCY HEAT (RED)
SYSTEM FAULT (YELLOW)
EQUIPMENT
STATUS
INDICATOR SHOWS THROUGH HOUSING
MESSAGE
CENTER
(SCROLLING TEXT)
LOW BATTERY
INDICATOR
CURRENT TIME & DATE
MAIN MENU BUTTON
NOTE: BACKLIGHT IS ACTIVATED WITH FIRST BUTTON PRESS AND AUTOMATICALLY TURNS OFF.
MAIN MENU
CLEAN SCREEN
(LOCKOUT TOUCH SCREEN
FOR 30 SECONDS)
SET VACATION HOLD
(HOLD–TO TIME AND DATE)
SET CURRENT TIME
SET CURRENT DATE
SET SCHEDULE
BUTTON
DONE BUTTON
(EXIT MENU)
USER SYSTEM SETTINGS
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TROUblESHOOTINg
DISplAY IS blANK
fAN DOES NOT TURN ON IN A CAll fOR HEAT
• Check circuit breaker and reset if necessary.
• Check System Setting 05 (Fan Control), to make sure
the fan control is properly set to match the type of
system (see page 6).
• Make sure power switch at heating & cooling
system is on.
• Make sure furnace door is closed securely.
HEAT pUMp ISSUES COOl AIR IN HEAT MODE,
OR wARM AIR IN COOl MODE
• If thermostat is battery powered, make sure fresh AA
alkaline batteries are correctly installed.
• Check wiring at the terminal block to confirm the
reversing valve is connected to the proper terminal.
O is active in cooling and B is active in heating.
TEMpERATURE SETTINgS DO NOT CHANgE
Make sure heating and cooling temperatures are set to
acceptable ranges:
HEAT/COOl bOTH ON AT SAME TIME
• Heat: 40° to 90°F (4° to 32°C).
• Cool: 50° to 99°F (10° to 37°C).
• Check SW1 (Equipment Type), to make sure it is set
to match the installed heating/cooling equipment
(see page 5).
HEATINg SYSTEM DOES NOT RESpOND
(“HEATINg” AppEARS ON SCREEN)
• Check to make sure heating and cooling wires are
not shorted together.
• Check for 24VAC at the equipment on the secondary
side of the transformer between power and
HEATINg EQUIpMENT IS RUNNINg IN COOl
MODE
common. If voltage is not present, check the heating
equipment to find the cause of the problem.
• Check for 24VAC between the heat terminal (W)
and the transformer common. If 24VAC is present,
the thermostat is functional. Check the heating
equipment to find the cause of the problem.
• Check SW1 (Equipment Type), to make sure it is set
to match the installed heating/cooling equipment
(see page 5).
• Check for loose or broken wires between the
thermostat and the heating equipment.
“HEATINg” IS NOT DISplAYED
• Check Installer System Setting number 01
(Control Setup) is set correctly.
COOlINg SYSTEM DOES NOT RESpOND
(“COOlINg” AppEARS ON SCREEN)
• Change the System Mode to Heat, and set
the temperature level above the current room
temperature.
• Check for 24VAC at the equipment on the secondary
side of the transformer between power and
common. If voltage is not present, check the cooling
equipment to find the cause of the problem
“COOlINg” IS NOT DISplAYED
• Check for 24VAC between the cooling terminal (Y)
and the transformer common. If 24VAC is present,
the thermostat is functional. Check the cooling
system to find the cause of the problem.
• Check Installer System Setting number 01
(Control Setup) is set correctly.
• Change the System Mode to Cool, and set
the temperature level below the current room
temperature.
• Check for loose or broken wires between the
thermostat and the cooling equipment.
ERROR CODES
If the thermostat enters an error mode, all outputs are turned off. The thermostat attempts to recover every 10 minutes.
If the error does not clear, use the reset button. This will return all settings back to factory default.
Error code
Message
Error Description
01
02
04
Open temperature sensor circuit
Shorted temperature sensor circuit
Error in permanent memory
“SENSOR ERROR”
“EEPROM ERROR”
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THERMOSTAT fEATURES
• Large touch screen with adjustable backlight –
constant backlight option available with 24VAC.
• Air filter, humidifier, dehumidifier, and HVAC service
indicators.
• Message center provides feedback and instructions.
• Programmable fan control with fan circulation mode.
• 7 day programmability or separately programmable
weekday/weekend schedules.
• Easy to use temperature control can override program
schedule at any time.
• Thermostat can be removed from the wall for easy
programming (batteries must be installed).
• Progressive recovery ensures proper temperature at
the start of a program event.
• Front battery door access for fast, easy replacement.
• Built in compressor protection prevents damage to
your equipment.
• Displays room temperature, temperature setting, and
optional outdoor temperature.
• Dual power option (battery or 24VAC).
• System test mode.
SpECIfICATIONS
Environment
Operating: 32° to 120°F (0° to 48.9°C)
Shipping: -30° to 150°F (-34.4° to 65.5°C)
Temperature
Relative humidity
Operating: 5% to 90% R.H. (non-condensing)
Electrical
Operating voltage
Current
24VAC (18 – 30VAC)
Maximum: 2.5A (total), 1.0A (single output)
Maximum surge current: 5A
Dual power. Can be battery or 24VAC 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 life: Approximately 1 year
Battery power
Thermal
Outdoor & Remote temperature sensor
Room temperature measurement
Outdoor temperature measurement
Maximum distance: 300 feet
Display range: 32° to 99°F (0° to 40°C)
Display range: -20° to 130°F (-30° to 55°C)
Heat: 40° to 90°F (4° to 32°C)
Cool: 50° to 99°F (10° to 37°C)
Setpoint temperature range
P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357
www.aprilairepartners.com
61000729 10.10
B2205243A
© 2010 Aprilaire – A division of Research Products Corporation
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