Pro1 Technologies T855 Instructions for use

Installation Manual
Pro1 Technologies
Toll Free: 888-776-1427
Web: www.pro1iaq.com
Hours of Operation: M-F 9AM - 6PM Eastern
Thermostat Application Guide
Description
Gas or Oil Heat
Electric Furnace
Heat Pump (No Aux. or Emergency Heat)
Heat Pump (With Aux. or Emergency Heat)
Multi-Stage Systems
Heat Only Systems
Cool Only Systems
Millivolt
Yes
Yes
Yes
Yes
Yes
Yes
Power Type
Battery Power
Hardwire (Common Wire)
Hardwire (Common Wire) with
Battery Backup
Table of Contents
Installation Tips
Thermostat Quick Reference
Wiring
Wiring Diagrams
Technician Setup Menu
Programming
Features
Specications
Page
A trained, experienced
technician must install this
product.
Carefully read these
instructions. You could damage
this product or cause a
hazardous condition if you fail
to follow these instructions.
Una version en espanol de este
manual se puede descargar en
la pagina web de la compania.
U.S. Registered Trademark. Patents pending
Copyright 2019 All Rights Reserved.
5-8
13-21
2-4
Yes
Yes
Mount Thermostat
Align the 4 tabs on the subbase with
corresponding slots on the back of the
thermostat, then push gently until the
thermostat snaps in place.
Installation Tips
Note: To ensure a solid t between the
thermostat and the subbase:
1. Mount subbase to a at wall
2. Use screws provided
3. Drywall anchors should be ush with the wall
4. Wires should be pushed into the wall
Installation Tips
The thermostat should be installed approximately 4 to 5 feet above the
oor. Select an area with average temperature and good air circulation.
• Close to hot or cold air ducts
• That are in direct sunlight
• With an outside wall behind the thermostat
• In areas that do not require conditioning
• Where there are dead spots or drafts (in corners or behind doors)
• Where there might be concealed chimneys or pipes
Wall Locations
Pick an installation location that is easy for the user to access. The temperature
of the location should be representative of the building.
Installation Tip
Do not install thermostat in these locations:
Installation Tips
22-29
30
Vertical Mount
Horizontal Mount For horizontal mount put one screw on
the left and one screw on the right.
All of our products are mercury free. However, if the product you are
replacing contains mercury, dispose of it properly. Your local waste
management authority can give you instructions on recycling and
proper disposal.
Mercury Notice
Failure to disconnect the power before beginning to install this product
can cause electrical shock or equipment damage.
Installation Tip: Electrical Hazard
For vertical mount put one screw on
the top and one screw on the bottom.
Subbase Installation
11-12
9-10
P.O. Box 3377
Springeld, MO 65808-3377
31
Rev. 1919
T855

Terminal Designations
This thermostat is shipped from the factory to operate a conventional heating
and cooling system. This thermostat may also be congured for a heat pump
system. See the “heat pump”conguration step on page 14 of this manual to
congure the thermostat for heat pump applications.
Wiring
Terminal
2 Heat 2 Cool
Conventional
System
2 Heat 1 Cool
Heat Pump
System
3 Heat 2 Cool
Heat Pump
System
RC
RH
C
B
O
G
W/E
Y
Y2
W2
Transformer power
(cooling)
Transformer power
(heating)
Transformer
common
Fan relay
First stage
of heat
First stage
of cool
Second stage
of cool
Second stage
of heat
Transformer power
(cooling)
Transformer power
(heating)
Transformer
common
Fan relay
Emergency Heat
First stage of
heat & cool
N/A
Auxiliary heat
Transformer power
(cooling)
Transformer power
(heating)
Transformer
common
Wiring
Caution:
Electrical Hazard
All components of the control
system and the thermostat
installation must conform to
Class II circuits per the NEC Code.
Warning:
Do not overtighten terminal
block screws, as this can
damage the terminal block.
A damaged terminal block
can keep the thermostat
from tting on the subbase
correctly or cause system
operation issues.
Installation Tip
Max Torque = 6in-lbs.
Wiring
If you are replacing a thermostat,
make note of the terminal
connections on the thermostat that
is being replaced. In some cases
the wiring connections will not be
color coded. For example, the
green wire may not be connected
to the Gterminal.
Loosen the terminal block screws.
Insert wires then retighten the
terminal block screws.
Place nonammable insulation into
the wall opening to prevent drafts.
1.
2.
3.
Wiring Tips
C Terminal
The C (common wire) terminal does
not have to be connected when the
thermostat is powered by batteries.
Wire Specications
Use shielded or non-shielded 18-22
gauge thermostat wire.
Failure to disconnect the power
before beginning to install this
product can cause electrical shock
or equipment damage.
Note:
In many heat pump systems with
no emergency heat relay, a jumper
can be installed between Eand
W2 to turn thermostat into a single
stage control for Emergency Heat
Operation.
Thermostat Quick Reference
Displays the current room temperature
Time and day of the week
Staging Indicators: 1 will appear in the display when rst stage of heat or
cool is on. +2 will appear for the second stage of heat. +3 will appear
for the third stage of heat.
Setpoint: Displays the user selectable setpoint temperature.
Hold: is displayed when the thermostat program is permanently overridden.
System Operation Indicators:
If these or the Fan indicator are ashing, it means that the system is in a
delay of some type (compressor delay, cooling fan delay, staging delay).
Low Battery Indicator: Replace batteries when this indicator is shown.
Program Menu Options: Show dierent options during programming.
Program Time Periods - Residential: Uses 4 time periods - WAKE, RETURN,
LEAVE & SLEEP. Commercial: Uses 2 or 4 time periods that appear in the text
eld - Occupied & Unoccupied.
Getting to know your thermostat
Thermostat Quick Reference
Battery Installation
Battery installation is recommended even if the thermostat is
hardwired (C terminal connected). When the thermostat is hardwired
and batteries are installed, the thermostat will activate a compressor
delay of 5 minutes when it detects a power outage from the hardwired
power supply.
Important:
High quality alkaline batteries are recommended.
Rechargeable batteries or low quality batteries
do not guarantee a 1-year life span.
Insert 2 AA Alkaline batteries
(included). High quality alkaline
batteries are recommended. Simple operating instructions
are found on the back of the
battery door.
To release battery cover press nger bevel
on the left side and lift the cover to access
batteries.
Energy Ecient Globe: Indicates ecient setpoint temperature.
Keypad Lockout: Indicates the thermostat is in keypad lockout.
Fan relay
Secodn stage of
auxiliary heat
First stage of
auxiliary heat
First stage of
heat & cool
Second stage
of heat & cool
Reversing valve
/ congerable
terminal
Reversing valve
/ congerable
terminal
Reversing valve
/ congerable
terminal
Reversing valve
/ congerable
terminal
Reversing valve
/ congerable
terminal
Reversing valve
/ congerable
terminal

Getting to know your thermostat
Glow in the dark light button
Setpoint buttons
Program buttons
Menu button
Fan button
LCD Display
System button
Button/battery access door
Battery cover Gently slide a screwdriver into the bottom edge
of the badge. Gently turn the screwdriver counter
clockwise. The badge is held on by a magnet in the
well of the battery door. The badge should pry o
easily. DO NOT USE FORCE.
About The Badge
All of our thermostats use the same universal magnetic badge. Visit the
company website to learn more about our free private label program.
Thermostat Quick Reference
Wiring Diagrams Wiring Diagrams
Typical 2H/2C System: 1Transformer
Typical 2H/2C System: 2Transformer
Typical Heat Only SystemWith Fan
Typical Cool-Only SystemWith Fan
FAN RELAY
HEAT RELAY
RC
RH
Y
C
W/E
G
C
R
L2
L1(HOT)
FAN RELAY
COMPRESSOR
RELAY
C
R
L2
L1(HOT)
RC
RH
Y
C
G
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Optional 24 VAC common connection when thermostat is used in battery power mode
W/E
REMOVE JUMPER
RC
RH
Y
C
W/E
G
W2
Y2
C
R
L2
L1(HOT)
C
R
L2
L1(HOT)
COMPRESSOR
RELAY
HEAT RELAY
FAN RELAY
Note:
In many systems with no emergency heat relay a jumper can be installed
between E and W2.
Magnet in door
Use the bevel on lower ridge
Thermostat Quick Reference
The low battery icon is displayed when the AA battery power is low. Whenever the
thermostat detects low battery voltage from the AA batteries, the low battery icon will
begin ashing on the screen for 21 days (if the batteries are not changed). If the batteries
are not changed 22 days after the thermostat detects low battery voltage, the thermostat
screen will only show the ashing battery icon until buttons are pressed. If the batteries
are not changed 43 days after the thermostat detects low battery voltage, the thermostat
screen will only show the ashing battery icon until buttons are pressed and the set points
will oset to 85°F/29°C in cooling and 55°F/13°C in heating. At this stage, set point changes
can be made temporarily but, the set points will change back to defaulted values after a
4-hour period. The thermostat will continue to perform this low battery ashing,
temperature oset condition until the internal voltage threshold is reached. When the
thermostat internal voltage threshold is reached, all relays will be opened and the
thermostat will become inoperable until new batteries are installed.
Important
HEAT RELAY 2
COMPRESSOR
RELAY 2
Typical Cool-Only SystemWith Fan
RC
RH
Y
C
W/E
G
W2
Y2
COMPRESSOR
RELAY
FAN RELAY
HEAT RELAY 2
COMPRESSOR
RELAY 2
HEAT RELAY
C
R
L2
L1(HOT)
Typical 3H/2C or 2H/1C Heat Pump System
RC
RH
Y
C
W/E
G
W2
Y2
COMPRESSOR
RELAY
FAN RELAY
AUXILIARY
HEAT RELAY
COMPRESSOR
RELAY 2
EMERGENCY
HEAT RELAY
COOL CHANGE
OVER VALVE
HEAT CHANGE
OVER VALVE
C
R
L2
L1(HOT)
O
B

Tech Setup Steps Adjustment Options Default
LCD Will Show
This setting allows you to select
the number of heat stages.
Stages of
Heat 2H
Tech Setup Steps Adjustment Options Default
LCD Will Show
Technician Setup Menu Technician Setup Menu
This feature allows the installer
to change the calibration of the
room temperature display. For
example, if the thermostat reads
70˚ and you would like it to read
72˚ then select +2.
OFF
This feature will ash a reminder
after the elapsed run time to
remind the user to change the
lter. A setting of “OFF”will
disable this feature.
Filter Change
Reminder
You can adjust the lter
change reminder from“OFF”
to 2000 hours of runtime in
50 hour increments.
Tech Setup Steps
Room
Temperature
Calibration 0˚F
You can adjust the room
temperature display to read
up to 4˚above or below the
factory calibrated reading.
Adjustment Options Default
LCD Will Show
FILTER
OF
0
This thermostat has a technician setup menu for easy installer
conguration. To set up the thermostat for your particular application:
1. Press the MENU button.
2. Press and hold the TECH SET button for 3 seconds. This 3
second delay is designed so that homeowners do not accidentally
access the installer settings.
3. Congure the installer options as desired using the table below.
Use the or keys to change settings and the NEXT
or PREV key to move from one step to another.
Note: Only press the DONE key when you want to exit the
Technician Setup options.
4. Press the DONE key to exit.
Keypad Lockout Note: The selected keypad lockout functionality must
be activated after exiting tech setup. If you do not perform this
procedure, all keys will function freely. To lock the keypad hold down
the and keys for 3 seconds. You will see a lock in the display. To
unlock the display hold down the and keys for 3 seconds.
Tech Setup Steps Adjustment Options Default
LCD Will Show
PTAC Medium
Fan Speed
Terminal
(Only displayed
if PTAC mode is
ON and PTAC fan
speeds is set to 3)
This setting will select the
terminal for medium fan speed
operations. The selected terminal
cannot be used for reversing valve
operations when heat pump is
enabled.
Use the and buttons to
select O/B terminals.
0
The swing setting often called
“cycle rate”,“dierential”or
“anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Cooling
Swing
The cooling swing setting
is adjustable from 0.2˚ to
2˚. For example: A swing
setting of 0.5˚ will turn the
cooling on at approximately
0.5˚ above the setpoint
and turn the cooling o at
approximately 0.5˚ below
the setpoint.
The swing setting often called
“cycle rate”,“dierential”, or
“anticipation”is adjustable. A
smaller swing setting will cause
more frequent cycles and a larger
swing setting will cause fewer
cycles.
Heating
Swing
0.5 0.5˚
The heating swing setting is
adjustable from 0.2˚ to 2˚.
For example: A swing setting
of 0.5˚ will turn the heating
on at approximately 0.5˚
below the setpoint and turn
the heating o at 0.5˚ above
the setpoint.
0.4˚
0.4
Swing Setting Tip
The second stage will turn on at 2x the swing setting. The second stage will
turn o when 1x the swing is reached. For example, if the swing setting is .5
degrees for heating and the thermostat is set at 70˚F, the rst stage will turn
on at approximately 69.5˚F. The second stage will turn on at 69˚F. The second
stage will turn o at 69.5˚F and the rst will turn o at 70.5˚F. If the third
stage is used, it will turn on at 68.5˚F and turn o at approximately 69˚F.
You can congure this thermostat
to have 2 or 4 programmable
time periods per day.
Time Periods
(Only displayed if
program optioin is
set to 5d or 7d)
4
Pro Recovery
This feature will start heating and
cooling early to bring the building
temperature to its programmed
setpoint by the beginning of the
WAKE, RETURN and OCCUPIED
time periods.
Use the or key to
select on or o.
ON
Use the and buttons to
select 4, 2C, or 4C time periods
per day.
4: Wake, Leave, Return &
Sleep.
2C: time periods are Occupied
& Unoccupied.
4C: time periods are Occupied
1, Unoccupied 1, Occupied 2, &
Unoccupied 2
You can congure this thermostat
to have a 7 day program, a
5+1+1 program or No program.
Note: If 7d is selected, in set schedule
you will program all seven days
individually.
If 5d is selected, in set schedule
you will program Monday – Friday
together and Saturday and Sunday
individually.
If 0d is selected the thermostat
becomes non-programmable and
the Set Schedule button goes away
in Menu.
Program
Options
Use the and button
to select 7d for 7 day, 5d for
5+1+1, or 0d for
non-programmable.
5d
COOL SWING
HEAT SWING
MED FAN TERM
CALIBRATE
PTAC Mode
This setting allows the thermostat
to operate a PTAC.This will allow
for multiple fan speeds selectable
in the next two tech settings.
Use the and buttons to
select ON/OFF.
ON
OF
PTAC MODE
This setting allows you to choose
the number of fan speeds the
thermostat will control.
PTAC Fan
Speeds
(Only displayed if
PTAC mode is ON)
2
2
FAN SPEEDS
When turned on the thermostat
will operate a heat pump. EM.
Heat will show as an option in the
system switch tech setting.
Use the and button to
adjust.
Heat Pump
OFF congures the
thermostat for conventional
systems.
ON congures the
thermostat for heat pump
systems.
OFF
OF
HEAT PUMP
HEAT
STAGES
2H
PROGRAM
5d
4
TIME
PERIODS
PRO
RECOVERY
This setting maximizes eciency
and equipment longevity by
increasing the heating and
cooling swing settings to 2°
during the unoccupied and leave
time periods. This will result in
signicantly fewer system cycles.
OFF
CYCLE MIN
OF
Keypad
Lockout
Keypad lockout allows you to
congure the thermostat so some
or all of the keys don’t function.
Use the and buttons to
select OFF, BASC, PART, FULL
OF - OFF= keypad lock-
out has been disabled.
BA - BASIC = basic keypad
lockout locks the menu key.
PA - PARTIAL= partial keypad
lockout, which locks all the
keys except the or setpoint
keys.
FU - FULL= full keypad
lockout, which locks out all
the keys.
OFF
KEY
LOCKOUT
OF
Use the and buttons to
select , 2 or 3.
1. Speeds: ON, Auto
2. Speeds: Low, High, Auto
3. Speeds: Low, Med, High,
Auto
Use the and buttons
to select 1H, 2H, 3H, 4H.
Use the or key to
select on or o.
Cycle
Minimizer
(Only displayed if
program optioin is
set to 5d or 7d)
This feature allows you to set a
maximum heating setpoint limit.
The setpoint temperature cannot
be raised above this value.
Heat
Setpoint
Limit
Use the or key to
select the maximum heat
setpoint and the minimum
cooling setpoint.
HEAT LIMIT
HE 90˚F
Technician Setup MenuTechnician Setup Menu
This setting provides the option
to select a terminal for Fresh Air
damper functions. The selected
terminal cannot be used for
reversing valve operations when
the heat pump setting is turned
on.
Fresh Air
Terminal
(Only displayed
if fresh air mode
is turned ON.
This setting
cannot be used
with PTAC, three
stages of cool,
or economizer
turned on)
Use the and buttons
to select O/B.
FRESH AIR TRM
0O
This setting selects the minimum
number of minutes that the fresh
air damper will be energized.
Fresh Air
Minutes
Use the and buttons
to select 5, 10, 15, 20, 25,
30, 35, 40, 45, 50, 55 or 60
minutes. 5
40
FRESH AIR MIN

Technician Setup Menu Technician Setup Menu
Select GAS to have the system
control the fan during a call for
heat, select Electric to have the
thermostat control the fan during
a call for heat.
Note: If heat pump is set to“ON”this
step will not show, and will default
to ELECTRIC.
Electric or Gas
Fan Operation
Use and buttons to
change the setting.
Tech Setup Steps
Stages of
Cool
Adjustment Options Default
LCD Will Show
FAN SET
GAS
Tech Setup Steps Adjustment Options DefaultLCD Will Show
Technician Setup MenuTechnician Setup Menu
GAS
System Set
Use the or buttons
until the desired application
is ashing. AUTO = (Auto
Changeover) OFF
SYSTEM SET
AutoO
Em.Heat
Cool
You can congure the system
switch for the particular
application. Heat - O - Cool,
Heat - O, Cool - O, Heat - O -
Cool – Auto.
Note: Emergency Heat is available
in heat pump mode only.
Dual Fuel
Auxiliary For
Heat Pump OFF
This setting allows the system
to run Gas, Oil, Propane or any
other types of auxiliary heat. The
thermostat will default to electric
auxiliary heat in heat pump
applications.
OF
DUAL FUEL
Use the and buttons
to select ON/OFF.
2C
COOL
STAGES
2C
This setting allows you to select
the number of cool stages.
Use the and buttons
to select 1C, 2C.
This feature allows the thermostat
to keep multiple stages of heat or
cool energized until the setpoint
is satised.
Satisfy
Setpoint
Staging
(Only displayed
if there are more
than one stage of
heat or cool)
Use the or buttons
to turn on of o.
SS STAGING
OF
This feature allows a delay to
occur if an additional stage is
needed.This allows the previous
stage extra time to satisfy the
setpoint.
Note:Will not show if using
outdoor sensor with balance point
temperature.
Staging
Delay
(Only displayed
if there are more
than one stage of
heat or cool)
Use the or key to
select OFF, 5, 10, 15, 30, 45,
60, or 90 minutes.
STAGING
DELAY
OF
This feature allows the installer
to select the minimum run
time for the compressor. For
example, a setting of 4 will force
the compressor to run for at
least 4 minutes every time the
compressor turns on, regardless of
the room temperature.
Minimum
Compressor
On Time
You can set the minimum
compressor run time to
“OFF”,“3”, “4”, or “5”minutes.
If 3, 4 or 5 is selected, the
compressor will run for at
least the selected time
before turning o. Use the
and buttons to
change the setting.
MIN COMP ON
OF OFF
OFF
OFF
The compressor short cycle delay
protects the compressor from
“short cycling”. This feature will
not altlow the compressor to be
turned on for 5 minutes after it
was last turned o.
Compressor
Short Cycle
Delay ON
Selecting “ON”will not allow
the compressor to be turned
on for 5 minutes after the
last time the compressor was
on. Select “OFF”to remove
this delay. Use the and
buttons to change the
setting.
Cooling Fan
Delay
The cooling fan delay setting will
delay the fan from coming on in
cool mode and keep it running
after the compressor shuts o
for a short time to save energy in
some systems.
You can set the cooling fan
delay to OFF, 15, 30, 60 or 90
seconds. If 15, 30, 60, or 90
is selected the fan will not
turn on for that many seconds
when there is a call for cool
and will run for that many
seconds after satisfying a call
for cool.
OFF
COMP DELAY
COOL FAN DL
OF
This feature allows you to set a
minimum cooling setpoint limit.
The setpoint temperature cannot
be lowered below this value.
Cool
Setpoint
Limit
Use the or key to
select the minimum cooling
setpoint.
COOL LIMIT
CO 44˚F
This feature allows you to display
temperatures in either Fahrenheit
or Celsius.
˚F or ˚C
˚F for Fahrenheit
˚C for Celsius ˚F
F OR C SET
F
o
You can select either a 12 or 24
hour clock setting.
12 or 24
Hour Clock
Use the or key to
select 12 or 24 hour clock. 12H
CLOCK SET
12
Tech Setup Steps Adjustment Options Default
LCD Will Show
The pre-occupancy fan settings
will energize the fan before the
occupied time to provide ventila-
tion prior to scheduled occupancy
time periods. This feature only
shows if the technician setup step
for time periods is set to 2C or 4C.
Use the and buttons to
adjust.
Pre
Occupancy
Fan
You can select the
pre-occupancy fan from OFF,
1, 2, or 3 hours. If 1, 2, or 3
is selected, the fan will turn
on that many hours prior to
the scheduled occupied time
period. OFF
PRE-OCC FAN
OF
The display light can be
congured to stay on all the
time or turn on when any key
is pressed. There are LOW and
HIGH selections for continuous ON
selection.
NOTE: The thermostat will need to be
hardwired in order for the LOW and
HIGH display light functions to work
properly. “ALWAYS ON LIT”will alter-
nate in the text eld with“HARDWIRE
ONLY”when HIGH is selected. These
prompts will alternate every three
seconds.
If the thermostat is hardwired
this feature will default to LOW.
Display
Light
Use the and buttons
to select OFF, LOW, or HIGH.
OFF congures the display
light to come on when the
light key or any button is
pressed.
LOW congures the display
light to stay on at a low
intensity constantly. When a
button is pressed, the display
light will transition to high
intensity.
HIGH congures the display
light to remain on at high
intensity all the time.
ALWAYS ON LIT
dL OFF
HARDWIRE ONLY
dL LOW
If
Hardwired
If Battery
Powered
This feature allows you to put
your phone number in the
display. You can choose ON or
OFF.
Notes:
If contractor call number is selected
ON, the phone number entered will
show in the display if there has been a
continuous call for heating or cooling
for 24 hours or if the light button is
held down for 3 seconds.To remove
the phone number from the display,
hold the light button down for 3
seconds.
Contractor
Call Number
If selected ON, you will see
the input screen after
pressing NEXT STEP. Use the
or button to select
the desired number and
the FAN or SYSTEM key to
move from one character to
another. See note below for
operation. OFF
OF
PHONE NUMBER
Tech Setup Steps Adjustment Options Default
LCD Will Show
This feature will congure the
fan to run a selected number of
cycles per hour. Note:This mode
can be enabled or disabled at
anytime during normal operation
by selecting IAQ mode with the
fan key. Turning this feature on
shows IAQ option in fan key.
Notes:
This programmable/selectable mode
will operate the fan 1-4 cycles per
hour, 1-45 minutes per cycle. Once
programmed in tech setup, to enable
this mode select“IAQ”with the fan
key. Disable this mode by selecting
“ON”or“AUTO”with the fan key.
IAQ Mode
Cycle
Select OFF, 1, 2, 3 or 4 with the
or buttons. This sets
the number of cycles per hour
that the IAQ fan mode will
operate.
OFF
IAQ MODE CYCL
OF
Contractor Call Number Note
If contractor call number is selected ON, the phone number entered will
show in the display if there has been a continuous call for heating or
cooling for 24 hours or if the light button is held down for 3 seconds. To
remove the phone number from the display, hold the light button down
for 3 seconds.
This feature allows fresh air
into a unit for a selectable time
period.When Fresh Air Mode is
enabled, the fan and the fresh air
damper terminal will energize
simultaneously.
Fresh Air
Mode
(This setting cannot
be used with PTAC,
three stages of
cool, or economizer
turned on)
OFF
FRESH AIR
OF
Use the and buttons to
select OFF, OC ON or ON.
OFF:Thermostat does not
enable Fresh Air Mode.
OC ON: Fresh Air Mode is
enabled during the OCCUPIED,
WAKE, RETURN, and SLEEP
time periods (It will not bring
in fresh air during UNOCCUPIED
and LEAVE time periods).
ON:Thermostat will enable
Fresh Air Mode for every time
periods.

A Note about IAQ Mode
This programmable/selectable mode will operate the fan 1-4 cycles per
hour, 1-45 minutes per cycle. Once programmed in tech setup, to enable
this mode select “IAQ” with the fan key. Disable this mode by selecting
“ON”or “AUTO” with the fan key.
Technician Setup Menu
Tech Setup Steps Adjustment Options Default
LCD Will Show
Enables a reminder for the user to
change the UV light bulb.
UV Lamp
Reminder
Use the or key to
select OFF, 1YR, 2 YR
OFF
UV LAMP
Enables a reminder for the user
to change the IAQ Cell after
25,000 hrs.
IAQ Cell
Reminder
Use the or buttons to
select OFF, or 25 (stands for
25,000 hours).
IAQ CELL
OFF
OFF
OFF
Set Time
Follow the steps below to set the day of the week and current time:
1. Press the MENU button.
2. Press SET TIME.
3. Day of the week is ashing. Use the or key to
select the current day of the week.
4. Press NEXT.
5. The current hour is ashing. Use the or key to
select the current hour. When using 12-hour time, make sure
the correct a.m. or p.m. choice is selected.
6. Press NEXT.
7. Minutes are now ashing. Use the or key to
select current minutes.
8. Press DONE when completed.
All our programmable thermostats are shipped with an energy saving default
program. You can customize this default program by following the
instructions in the set program schedule section starting on page 24.
Programming
Your thermostat can be programmed to have each day of the week
programmed uniquely (7 days), all the weekdays the same with a separate
program for Saturday and a separate program for Sunday (5+1+1), or
non-programmable. For the 7-day and 5+1+1 programming modes, there are
three time period options.
1.“4”Residential (WAKE, LEAVE, RETURN, SLEEP)
2.“2C”Commercial (OCCUPIED, UNOCCUPIED)
3.“4C”Commercial (OCCUPIED 1, UNOCCUPIED 1, OCCUPIED 2, UNOCCUPIED 2)
This thermostat has a programmable fan feature, which allows you to run the
fan continually during any time period.
Reminders
Once a reminder has been turned on and set, the elapsed time can be checked
by navigating to its tech setup step. The elapsed time will then appear in the
text eld. It can also be reset at that time by holding down the set time/run
sched button for 3 seconds. Resetting an expired reminder can be done without
entering tech setup, by holding down the set time/run sched button for 3
seconds from the home screen.
1. Select HEAT or COOL with the SYSTEM key.
Note: You have to program heat and cool each separately.
2. Press the MENU button (If menu does not appear rst, press
RUN SCHED).
3. Press SET SCHED. Note: Monday is displayed and the
WAKE/OCC1 icon is shown. You are now programming the
WAKE/OCC1 time period for that day.
4. Time is ashing. Use the or key to make your time
selection for that day’s WAKE/OCC1 time period.
Note: If you want the fan to run continuously during this time
period, select ON with the FAN key. If you want to use IAQ
mode during this time period, select IAQ with the FAN key.
5. Press NEXT.
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for that day’s WAKE/OCC1
period.
7. Press NEXT.
8. Repeat steps 4 through 7 for that day’s LEAVE/UNOCC1
time period, for that day’s RETURN/OCC2 time period,
and for that day’s SLEEP/UNOCC2 time period.
To customize your 7 day 4 time period Program schedule, follow
these steps:
Monday:
Repeat steps 4 through 8 for the remaining days of the week.
A Note About Auto Changeover:
In Auto you have the ability to switch between Auto Heat or Auto Cool
by pressing the system key. This can be done once the current mode has
reached its setpoint. For example: if in Auto Heat, the heat setpoint must
be satised before the thermostat will allow you to switch to Auto Cool.
You can switch out of Auto by holding down the system key. To get back
into Auto, you must toggle the system key to Auto.
Set Program Schedule For Two Time Periods
1. Select HEAT or COOL with the SYSTEM key.
Note: You have to program heat and cool each separately.
2. Press the MENU button (If menu does not appear rst, press
RUN SCHED).
3. Press SET SCHED. Note: Monday-Friday is displayed and the
OCCUPIED text is shown. You are now programming the
OCCUPIED time period for that day.
4. Time is ashing. Use the or key to make your time
selection for the weekday OCCUPIED time period.
Note: If you want the fan to run continuously during this time
period, select ON with the FAN key. If you want to use IAQ
mode during this time period, select IAQ with the fan key.
5. Press NEXT.
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for the weekday OCCUPIED
period.
7. Press NEXT.
8. Repeat steps 4 through 7 for the weekday UNOCCUPIED
time period.
To customize your 5+1+1 Program schedule, follow these steps:
Weekday:
Repeat steps 4 through 7 for the Saturday OCCUPIED time period
and for the Saturday UNOCCUPIED time period.
Saturday:
Repeat steps 4 through 7 for the Sunday OCCUPIED time period, and
for the Sunday UNOCCUPIED time period.
Sunday:
(OCCUPIED, UNOCCUPIED)
ProgrammingProgramming
Programming
This allows you to select the
minimum number of minutes
that the fan will run per IAQ
mode cycle. The thermostat will
keep track of fan runtime from
normal heat and cool operation. If
additional fan runtime is needed,
the thermostat will run the fan to
satisfy the IAQ mode minutes.
Notes: This programmable/selectable
mode will operate the fan 1-4 cycles
per hour, 1-45 minutes per cycle. Once
programmed in tech setup, to enable
this mode select“IAQ”with the fan
key. Disable this mode by selecting
“ON”or“AUTO”with the fan key.
IAQ Minutes
Per Cycle
Select 1, 5, 10, 15, 20, 30 or
45 minutes.
When IAQ fan mode is
enabled, it will ensure the
fan runs at least the selected
number of minutes per IAQ
Mode Cycle.
This step will not appear if
previous step is set to“OFF”.
IAQ MODE MIN
11
Enables a reminder for the user to
change the humidity pad.
Humidity
Pad
Reminder
Use the or key to
select OFF, 600, 1000, 1500,
or 2000. These represent
hours of heat operation.
OFF
HUMIDITY PAD
OFF

Set Program Schedule For Four Time Periods
1. Select HEAT or COOL with the system switch.
Note: You have to program heat and cool each separately.
2. Press the MENU button (If menu does not appear rst press
RUN SCHED).
3. Press SET SCHED. Note: Monday-Friday is displayed and the
WAKE/OCC1 icon is shown. You are now programming the
WAKE/OCC1 time period for the weekday setting.
4. Time is ashing. Use the or key to make your time
selection for the weekday WAKE/OCC1 time period.
Note: If you want the fan to run continuously during this time
period, select ON with the FAN key. If you want to use IAQ
mode during this time period, select IAQ with the FAN key.
5. Press NEXT.
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for the weekday WAKE/OCC1
period.
7. Press NEXT.
8. Repeat steps 4 through 7 for the weekday LEAVE/UNOCC1
time period, for the weekday RETURN/OCC2 time period,
and for the weekday SLEEP/UNOCC2 time period.
To customize your 5+1+1 Program schedule, follow these steps:
Weekday:
Repeat steps 4 through 7 for the Saturday WAKE/OCC1 time period,
for the Saturday LEAVE/UNOCC1 time period, for the Saturday
RETURN/OCC2 time period, and for the Saturday SLEEP/UNOCC2
time period.
Saturday:
Repeat steps 4 through 7 for the Sunday WAKE/OCC1 time period,
for the Sunday LEAVE/UNOCC1 time period, for the Sunday
RETURN/OCC2 time period, and for the Sunday SLEEP/UNOCC2
time period.
Sunday:
(WAKE, LEAVE, RETURN, SLEEP or OCCUPIED 1, UNOCCUPIED1, OCCUPIED 2, UNOCCUPIED 2)
Custom Program
Day of
the Week Events Time Setpoint
Temperature
(HEAT)
Setpoint
Temperature
(COOL)
Weekday
Saturday
Sunday
Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Wake/OCC1
LeaveUNOCC1
Return/OCC2
Sleep/UNOCC2
Occupied
Unoccupied
Occupied
Unoccupied
Occupied
Unoccupied
A Note About Programmable Fan:
The programmable fan feature will run the fan continuously during any
time period it is programmed to be on. This is the best way to keep the
air circulated and to eliminate hot and cold spots in your building. If
using IAQ mode, set fan to IAQ for any time period.
1. Select HEAT or COOL with the SYSTEM key.
Note: You have to program heat and cool each seperately.
2. Press the MENU button (If menu does not appear rst press
RUN SCHED).
3. Press SET SCHED. Note: Monday is displayed and the
OCCUPIED text is shown. You are now programming the
OCCUPIED time period for that day.
4. Time is ashing. Use the or key to make your time
selection for that day’s OCCUPIED time period.
Note: If you want the fan to run continuously during this time
period, select ON with the FAN key. If you want to use IAQ
mode during this time period, select IAQ with the fan key.
5. Press NEXT.
6. The setpoint temperature is ashing. Use the or key
to make your setpoint selection for that day’s OCCUPIED
period.
7. Press NEXT.
8. Repeat steps 4 through 7 for that day’s UNOCCUPIED
time period.
Monday:
Repeat steps 4 through 8 for the remaining days of the week.
To customize your 7 day 2 time period program schedule, follow
these steps:
Default Programming
Factory Default Program
Day of
the Week Events Time Setpoint
Temperature
(HEAT)
Setpoint
Temperature
(COOL)
Weekday
Saturday
Sunday
Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Wake/OCC1
Leave/UNOCC1
Return/OCC2
Sleep/UNOCC2
Wake/OCC1
LeaveUNOCC1
Return/OCC2
Sleep/UNOCC2
6 AM
8 AM
6 PM
10 PM
6 AM
8 AM
6 PM
10 PM
6 AM
8 AM
6 PM
10 PM
70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
75˚F (24˚C)
83˚F (28˚C)
75˚F (24˚C)
78˚F (26˚C)
75˚F (24˚C)
83˚F (28˚C)
75˚F (24˚C)
78˚F (26˚C)
75˚F (24˚C)
83˚F (28˚C)
75˚F (24˚C)
78˚F (26˚C)
ProgrammingProgramming
Programming Programming

Factory Default Program for 2 Time Periods
Day of
the Week Events Time Setpoint
Temperature
(HEAT)
Setpoint
Temperature
(COOL)
Weekday
Saturday
Sunday
OCCUPIED
UNOCCUPIED
OCCUPIED
UNOCCUPIED
OCCUPIED
UNOCCUPIED
8 AM
6 PM
6 PM
6 PM
8 AM
70˚F (21˚C)
62˚F (17˚C)
78˚F (26˚C)
83˚F (28˚C)
8 AM 70˚F (21˚C)
62˚F (17˚C)
70˚F (21˚C)
62˚F (17˚C)
78˚F (26˚C)
83˚F (28˚C)
78˚F (26˚C)
83˚F (28˚C)
You can use the table on the next page to plan your customized program
schedule if using 5+1+1.
Default Programming
If the lter change reminder is enabled, you will see a reminder in
the display when your air lter needs changed. The reminder will
be shown in the display after your system has run long enough to
require an air lter change.
Resetting The Filter Change Reminder: When the reminder is
displayed, you should change your air lter and reset the reminder by
holding down the 3rd button from the left side of the thermostat for
3 seconds.
This thermostat also has other maintenance reminders (Humidity
Pad, UV lamp, and IAQ Cell), that are reset with the same procedure.
Filter Change & Other Reminders
Temporary Hold: The thermostat will display HOLD and RUN SCHED
on the bottom of the screen when you press the or
key. If you do nothing, the temperature will remain at this setpoint
temporarily for 4 hours. The program setpoint will then replace the
temporary setpoint.
Permanent Hold: With a temporary hold set, If you press the HOLD
key at the bottom of your screen, you will see HOLD appear below
the setpoint temperature in the display. The thermostat will now
permanently stay at this setpoint and can be adjusted using the
or keys.
To Return To Program: Press the RUN SCHED key at the bottom of
the screen to exit temporary and permanent holds.
Temporary & Permanent Hold Feature
FeaturesProgramming

Specications
The display range of temperature ... 41˚F to 95˚F (5˚C to 35˚C)
The control range of temperature.... 44˚F to 90˚F (7˚C to 32˚C)
Load Rating............................................... 1 amp per terminal, 1.5 amp
maximum all terminals combined
Swing (cycle rate or dierential) ...... Heating is adjustable from 0.2˚ to 2.0˚
Cooling is adjustable from 0.2˚ to 2.0˚
Power source ...........................................18 to 30 VAC, NEC Class II, 50/60 Hz
for hardwire
Battery power from 2 AA Alkaline
batteries
Operating ambient ............................... 32˚F to +105˚F (0˚C to +41˚C)
Operating humidity .............................. 90% non-condensing maximum
Dimensions of thermostat ................. 4.7”W x 4.3” H x 0.9” D
Specications