Other Quality Products from Hunter
Fans
Air Purifiers
Humidifiers
Installation
Operation
Table Of Contents
Features 6
Remove Old Thermostat 8
Labeling Wires 10
Connecting Wires and Mounting Thermostat 14
System Selector Switches 14
Start-Up 16
Reviewing Current Temperature Setting 16
Setting New Temperature 17
Filter Monitor 18
Resetting Filter Counter To Zero 19
Temperature Span 19
Backlighting 19
Trouble Shooting 20
Typical Wiring Diagrams 22
We are pleased you have selected one of our broad line of home comfort products. Our
products are manufactured to high quality standards and are designed for years of service.
We hope you will be satisfied and thank you for buying a Hunter product.
Read This Before Installing Thermostat
IMPORTANT
1
Read the entire installation section of this
Owner’s Manual thoroughly before you begin
to install or operate your Hunter Thermostat.
• Remove the mylar label from the display
window.
INSTALLATION
2
All installation is normally performed at your
thermostat.
PROGRAMMING
3
You can practice programming before
installing your thermostat by inserting and
connecting the batteries and following the
instructions on page 14. This can be done while
you relax in your favorite chair and is a very
good way to familiarize yourself with all the
functions of your Hunter Thermostat.
OPERATION
4
Your Hunter Thermostat is designed to
operate with most gas, oil, electric or 2-wire
hot water heating, and air conditioning systems
that have 24-volt or millivolt control.
This Hunter Thermostat will not control multistage heating or cooling systems, 110/220 V
systems, or 3 wire zone systems.
COMPRESSOR PROTECTION
5
The thermostat provides a 4-minute delay
after shutting off the compressor before it
can be restarted. This feature will prevent
damage to your air conditioner compressor
caused by rapid cycling. It does not provide a
delay when there are power outages.
TEMPERATURE RANGE
6
Your thermostat can be programmed between
40°F and 95°F (5°C and 35°C). However, it will
display room temperatures fr om 32°F to 99°F (0°C
to 37°C).
POWER FAILURE
7
Whenever the main power is interrupted or
fails, the battery power retains the programs
and current time.
BATTERY WARNING
8
When the batteries are low the “LOW BATT”
indicator on the display will flash. When this
happens, install new batteries immediately.
Once the “LOW BATT” indicator appears, the
thermostat will continue to operate for
approximately 30 days. (Only alkaline batteries
should be used in your thermostat.
Rechargeable batteries have different properties
which may cause the thermostat to not operate
properly. Do not use old batteries.) The batteries
should last one year.
CAUTION: The batteries are the only source
of power used to operate your system. If you
do not replace the batteries, the display will
dim and your heating and cooling system will
stop operation.
NOTE: If you plan to be away from the
premises over 30 days, we recommend that
you replace the old batteries with new
alkaline batteries prior to leaving.
FILTER
HEAT
OFF
COOL
AUTO
FAN
RESET
Features (Model 42999)
■ Function
Switch
For turning
on heating
and cooling
system.
■ Fan ON
and
AUTO
Selector
Switch.
■ Reset Button
For resetting
thermostat.
■ Easy access battery compartment.
■ Easy-To-Read
Digital Display
Liquid crystal
display shows
room
temperature, set
temperature,
filter indicator,
low battery
indicator, heat
and cool system
indicator.
■ Unique Filter
Monitor
Automatically
reminds you to
clean or
replace your
heating and air
conditioning
filters.
■ For raising
temperature.
■ For lowering
temperature.
69
C
TEMP
SET TEMP
FILTER
LO BAT
HOLD
HEAT COOL
■ To reset filter
counter back
to zero.
6-7
Features (Model 44050)
■ Function
Switch
For turning
on heating
and cooling
system.
■ Fan ON
and AUTO
Selector
Switch.
■ Reset Button
For resetting
thermostat.
■ Easy access battery compartment.
■ Easy-To-Read
Digital Display
Liquid crystal
display shows
room
temperature, set
temperature,
filter indicator,
low battery
indicator, heat
and cool system
indicator.
■ Unique Filter
Monitor
Automatically
reminds you to
clean or
replace your
heating and air
conditioning
filters.
■ For raising
temperature.
■ For lowering
temperature.
69
C
TEMP
SET TEMP
FILTER
LO BAT
HOLD
HEAT COOL
■ Display
backlight for
viewing in
the dark.
■ To reset filter
counter back
to zero.
FILTER
LIGHT
HEAT OFF
COOL
AUTO
FAN
RESET