Thermo-Serv 9915i, 9901i, 9920i User Manual
Menu Driven Display
Integrated Damper /
Economizer Control
24 VAC with Worry-Free
Memory Storage
English and Spanish Menus
Two Year Warranty
User's Manual
110-1069
DELUXE
PROGRAMMABLE
THERMOSTATS
9901
i
9915
i
9920
i
Fresh Air
Control
TABLE OF CONTENTS
Changing the Time of Day . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 4
Turning on Heating and Cooling Cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 5
What do the LED’s below the display mean? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 6
Fan Cycles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7
Intermittent Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7
Temporary Temperature Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 8
Timed Temperature Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 9
Permanent Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 10
Returning to Program Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 10
Vacation Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 11
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 12
Copy Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 14
Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 15
Energy Savings Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 15
Setting the Economizer / Damper Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 16
Setting the Purge Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 16
User Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 17
Installer Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 21
Energy Efficient Recovery™ (EER™) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 25
Indoor Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 25
Outdoor Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 25
Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 26
Power Outage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 26
Resetting to Factory Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page 26
3
IMPORTANT SAFETY INFORMATION
WARNING:
Always turn off power at the main power source by unscrewing fuse or switching circuit
breaker to the off position before installing, removing, or cleaning this thermostat.
Read all of the information in this manual before programming this thermostat.
This is a 24V AC low-voltage thermostat. Do not install on voltages higher than 30V AC.
All wiring must conform to local and national building and electrical codes and ordinances.
Do not short (jumper) across terminals on the gas valve or at the system control to test
installation. This will damage the thermostat and void the warranty.
This thermostat is equipped with automatic compressor protection to prevent potential
damage due to short cycling or extended power outages. The short cycle protection provides a
5-minute delay between heating or cooling cycles to prevent the compressor from being damaged.
Do not switch system to cool if the temperature is below 50°F (10°C). This can damage the
cooling system and may cause personal injury.
Use this thermostat only as described in this manual.
2
!
Turning on Heating and Cooling Cycles
From the main screen press MENU.
Use the UP or DOWN arrows to highlight HEAT/COOL.
Press SELECT.
Use the UP or DOWN arrows to highlight HEAT, COOL
or AUTO. Press SELECT. The SELECT button will turn
on the desired cycle. You do not have to turn off HEAT to
turn on COOL. When HEAT or COOL or AUTO is turned
on, all others are automatically shut off. After pressing
the SELECT button, the main screen will
automatically appear.
NOTE: Emergency heat is used only on the 9920i model.
NOTE: AUTO appears only if Auto Changeover is turned on in the Installer Settings.
5
4
Changing the Time of Day
From the main screen press MENU.
Use the UP or DOWN arrows to highlight DAY/TIME.
Press SELECT.
Use the UP or DOWN arrow to highlight DAY, HOUR
or MINUTES. Press SET.
Use the UP or DOWN arrow to scroll through
the days of the week, hours or minutes.
Press SET to select desired value.
Press FINISHED when complete.
MONDAY 3:29 PM
78.1
COOL
FAN AUTO
SET AT 78
MONDAY 3:29 PM
78.1
COOL
FAN AUTO
SET AT 78
HOLD TEMP MENU
MENU
DAY / TIME
FAN
USER SETTINGS
INSTALLER SETTINGS
HOME
SELECT
SET DAY & TIME
DAY
HOUR
MINUTES
FINISHED
FRIDAY
12 PM
06
SET
SET DAY & TIME
DAY
HOUR
MINUTES
FINISHED
FRIDAY
12 PM
31
SET
HOME
MENU
SELECT
OFF
HEAT
COOL
AUTO
MAIN MENU
HOLD TEMP MENU
PROGRAM
HEAT / COOL
FRESH AIR
DAY / TIME
HEAT / COOL SETTINGS
SELECT
HEAT / COOL SETTINGS
HEAT
COOL
AUTO
EMERGENCY HEAT
MAIN MENU
SELECT
Fan Cycles
From the main screen press MENU.
Use the UP or DOWN buttons until FAN is highlighted. Press SELECT.
Use the UP or DOWN buttons to highlight FAN settings.
Press SELECT.
Intermittent Fan
INTERMITTENT will turn the fan on for a set period of time for a
given interval.
The thermostat will cycle the fan on for the set ON cycle. The fan will remain off for the set OFF cycle.
If the HVAC system runs for a longer period than the ON cycle, the OFF cycle will start counting over
again when the system shuts off.
7
MONDAY 3:29 PM
Three choices are available:
ON will turn the fan on continuously.
AUTO will turn the fan on only
when there is a call for heating
or cooling.
INTERMITTENT will turn the fan
on for a set period of time for a
given interval. Highlight the choice
you desire and press SELECT.
What do the LED’s below the display mean?
The LED’s indicate when the HVAC system is activated. With a call for heating or cooling, the HEAT or COOL LED will be illuminated.
The AUX LED indicates the second stage of heating or cooling.
The CHECK LED is used only on the 9920i. It indicates the heat pump should be serviced by a qualified technician.
The EMER LED indicates that the emergency heat is turned on.
6
78.1
HOLD TEMP MENU
COOL
FAN AUTO
SET AT 78
HEAT / COOL
FRESH AIR
DAY / TIME
FAN
HOME
MENU
SELECT
FAN MENU
FAN SETTINGS
FAN PROGRAM
MAIN MENU
SELECT
FAN SETTINGS
ON
AUTO
INTERMITTENT
FAN MENU
SELECT
INTERMITTENT FAN
ON TIME 5 MIN
OFF TIME 20MIN
FAN MENU
SELECT
9
Timed Temperature Adjustments
Press the HOLD TEMP button. The following screen appears.
Press the DOWN button to highlight TEMPORARY HOLD. Press SELECT.
The temperature should be highlighted.
Press the UP or DOWN button to adjust
the temperature. Press SET TEMP.
The time should be highlighted. Press the UP or
DOWN button to adjust the time. Press SET TIME.
The main screen will now indicate a TEMPORARY HOLD until the
desired time. Press RESUME PROGRAM to return to the program
operating mode.
Temporary Temperature Adjustments
From the main screen, press the UP or DOWN button. The screen
will change to the following.
Use the UP or DOWN button to adjust to the desired
temperature. This is a temporary 3-hour hold or until
the next programmed event, whichever is shorter.
For a longer duration see page 9.
8
MONDAY 3:29 PM
After pressing the SET
TEMP button or after 5
seconds the screen will
indicate the new setpoint
and its duration. To return
to the normal operating
program mode, press
RESUME PROGRAM.
COOL
78.1
HOLD TEMP MENU
FAN AUTO
SET AT 78
SET TEMPERATURE AT
HOME
70 ˚
UNTIL 6:30 PM
F
SET TEMP
SET AT 70°F UNTIL 6:30 PM
F
COOL
70.5˚
RESUME
PROGRAM
FAN AUTO
MENU
MONDAY 3:29 PM
78.1
HOLD TEMP MENU
COOL
FAN AUTO
SET AT 78
HOLD SETTINGS
PERMANENT HOLD
TEMPORARY HOLD
VACATION HOLD
HOME
SELECT
TEMPORARILY AT
70 ˚
UNTIL 3:50 PM
HOME
F
SET TEMP
TEMPORARILY AT
F
70 ˚
UNTIL 3:50 PM
HOME
SET TIME
SET AT 70°F UNTIL 8:29 PM
°
77.0
RESUME
PROGRAM
COOL
F
FAN AUTO
MENU
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