INSTALLATION
What You Need
Mount Wallplate and Thermostat
JUST RIGHT
DIGITAL THERMOSTAT
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Remove the wallplate from your thermostat by pressing the release tab on
the bottom of the thermostat. See Figure 2.
®
This thermostat includes two #8 slotted screws and two wall anchors
for mounting. To install your thermostat, you should have the fol-
lowing tools and materials.
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Slotted Screwdriver(s)
Small Philips screwdriver
Hammer
Electric drill and 3/16” bit
Two 1.5 V (AA) size alkaline batteries
Remove Old Thermostat
CAUTION: Do not remove any wiring from existing thermostat before
reading the instructions carefully. Wires must be labeled prior to
removal.
Owners Manual
Congratulations!
Model 42996
Your new Hunter thermostat will provide years of reliable service. Using this
digital thermostat will provide more uniform comfort in your home through
the seasons. Thank you for buying a Hunter product!
IMPORTANT! Turn off the power to the furnace at the main power
panel or at the furnace.
Remove existing thermostat cover and thermostat. See Figure 1. Some ther-
mostats will have screws or other locking devices that must first be removed.
Once the wall mounting plate is exposed, look for wires.
Please read this manual for complete instructions on installing and operating
your thermostat. If you require further assistance, call Hunter Technical Support
at 1-888-830-1326 from 8am to 5pm Central Time.
Figure 2
If wires are not visible, they may be connected to the back of the wallplate.
Again, look for screws, tabs, etc. Some models have doors that open to expose
wires and mounting screws. See Figure 1.
Remove the mylar label from the display window.
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Position wallplate on wall and pull existing wires through large opening.
Then level for appearance. Mark holes for plastic anchors provided, if your
existing holes do not line up with those on the wallplate.
IMPORTANT INFORMATION
Typical Home Thermostats
1. This thermostat is designed to work on the following systems:
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Drill holes with 3/16” bit and gently tap anchors into the holes until flush
with wall.
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Gas - Standing Pilot
Gas - Electronic Ignition
Gas - Fired Boilers
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Oil - Fired Boilers
Oil - Fired Furnace
Electric Furnace
Reposition wallplate to wall, pulling wires through large opening. Insert
mounting screws provided into wall anchor and tighten. See Figure 3.
Gas - Milivolt Systems
Electric Air Conditioning
This thermostat will NOT control single-stage or multi-stage heat pumps or
110/220 V baseboard electric heating systems.
2. Temperature Range
This thermostat can be set between 45°F and 95°F (7°C and 35°C). However,
it will display room temperatures from 30°F to 99°F (0°C and 37°C). “HI” will
be displayed if the temperature is higher than 99°F (37°C), and “LO” will be
displayed if the temperature is lower than 30°F (0°C).
This thermostat will automatically cutoff in Heat mode if the temperature rises
above 95°F (35°C), and automatically cutoff in Cool mode if the temperature
drops below 45°F (7°C).
3. Compressor Protection
This thermostat provides a 3.5 minute delay after shutting off the cooling system
before it can be restarted.This feature will prevent damage to your compressor
caused by rapid cycling. It does not prevent a rapid compressor restart due to
short power outages.
Wire Labeling
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Each wire coming from the wall to the existing thermostat is connected
to a terminal point on that thermostat. Each of these terminal points is
usually marked with a code letter as shown in Table A below.
4. Battery Warning
Two fresh AA alkaline batteries should provide well over one year of service.
However, when the batteries become drained, the Low Battery Indicator will
flash on the display. When this message occurs, install new alkaline batteries.
You have approximately 1 minute to change the batteries and keep the ther-
mostat’s settings. Once the batteries have become too low to ensure proper
operation, your system will be turned Off, and the display will be cleared except
for flashing Low Battery Indicator on the LCD display.
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The number of wires in your system can be as few as two (for heat only
systems), as many as eight, or any number in between. If you follow the
labeling procedures correctly, you do not have to be concerned about how
many wires there are.
Figure 3
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There is often no terminal marking on the existing thermostat of two wire,
heat only systems. Just connect either of the wires to the Rh terminal, then
connect the other wire to the W terminal to complete the circuit.
NOTE: 5-wire Systems
CAUTION: When only the battery icon flashes on the display, the ther-
mostat is shut down, and your system will no longer operate. In this
condition, there is no temperature control of your dwelling.
If your thermostat has one wire marked R or Rh (2, 3, or 4-wire system), then
leave the jumper wire between the Rh and Rc terminals on the wallplate.
Otherwise, if you have separate Rh and Rc wires (5-wire system), then remove
the jumper wire between the Rh and Rc terminals.
IMPORTANT! BEFORE DISCONNECTING ANY WIRES, APPLY THE SELF-AD-
HESIVE LABELS PROVIDED TO THE WIRE AS SHOWN IN TABLE A BELOW.
(For example, attach the label marked W to the wire that goes to the W
or H terminal on your existing thermostat.) IGNORE THE COLOR OF THE
WIRES since these do not always comply with the standard.
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 leav-
ing.
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After labeling wires, disconnect them from the existing thermostat ter-
minals.
5. Notes
Connect Wires and Mount
Thermostat to Wallplate
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received,including interference
that may cause undesired operation.
Remove existing wallplate. To make sure wires do not fall back into wall
opening, you may want to tape them to the wall.
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Match and connect the labeled wires to the appropriate coded terminal
screws on the wallplate. (See Figure 4, 5.) Ignore any wires which may be
present, but which were not connected to the old thermostat.
If hole in wall is larger than necessary for wires,seal this hole with insulating
material so that no hot or cold air can enter the back of the thermostat
from the wall. This air could cause a false thermostat reading.
This equipment has been tested and found to comply with the limits for a Class
B digital device, pursuant to Part 15 of the FCC Rules.These limits are designed
to provide reasonable protection against harmful interference in a residential
installation.This equipment generates,uses and can radiate radio frequency en-
ergy and,if not installed and used in accordance with the instructions,may cause
harmful interference to radio communications. However, there is no guarantee
that interference will not occur in a particular installation. If this equipment
does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
If the code letter
on your existing
thermostat is. . .
then mark the
wire with label
shown. . .
and connect
to thermostat
terminal shown
RH, R, VR or 4
24 Volt
x
x
x
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Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
RC, VC
24 Volt Cool
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Consult the dealer or an experienced radio/TV technician for help.
G or F
Fan
Figure 5
Figure 4
FEATURES
Front Doors: Covers
keys and batteries
when not used for
neat appearance.
Open with one
finger from top or
bottom.
Filter Change Indicator:
LCD Display:
Shows Room
Temperature, Set
Temperature, and
other feature
information as
required.
Y, C or M
Air Conditioning
Compressor
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Be sure to tighten the terminal screws securely, otherwise a loose wire
could cause operational problems with your system or thermostat.
x
Flashes when filter
needs to be checked.
Low Battery
Indicator:
Flashes when
batteries need
to be replaced.
Push excess wire back into the hole to prevent interference when installing
the thermostat to the wallplate.
Reset: Press with a
paper clip to reset the
thermostat and return
to power-up settings.
Make sure the System Switch is set to OFF, and the Fan Switch is set to
AUTO.
x
W or H
Heating
Insert the tabs on top of the thermostat body into the slots at the top of
the wallplate. Press the bottom of the thermostat body into the snap on
the bottom of the wallplate. Refer to Figure 2. (NOTE: Do not force the
thermostat onto the wallplate, as the terminal pins may be damaged. If it
does not snap properly, the thermostat may not work.)
Table A
NOTE: Do not connect a “Common” wire (sometimes labeled “C”) to any
terminal on this thermostat.Tape up the wire and do not use.This wire provides
electricity to non-battery powered thermostats.
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Insert the two AA size alkaline batteries, observing the polarity marked
inside the battery compartment.
Switch on the main power at the panel or furnace.
System
Battery
Switch:
Fan Switch:
Filter Key:
Resets the
Up and Down Keys:
Compartment:
Selector
Fan switch for
Automatic or
Continuous fan
operation.
Keys for changing the Front access allows
filter change Temperature setting. easy insertion
switch for
Heat, Cool,
and Off.
counter to
zero.
Also used for adjust- of two AA 1.5V
ing the Span.
batteries.
Form No. 41970-01 Rev 4/4/2006
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