Install guide 8035C
MENU
PROG
RESET
ENGLISH
MENU
PROG
RESET
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Printed in China
1-402-051
PG 3
2 Remove old unit
ï Switch electricity to the furnace and air conditioner OFF;
then proceed with the following steps.
ï Remove cover from old thermostat. Most are snap-on types and simply
pull off. Some have locking screws on the side or front. These must be
loosened. Note the letters printed near the terminals.
ï Attach labels (enclosed) to each wire for identification.
Read instructions carefully before removing any wiring from existing
Caution
thermostat. Wires must be labeled before they are removed. THERE IS NO
STANDARD COLOR CODE. When removing wires from their terminals,
ignore the color of the wires since these may not follow any standard.
ï Label the wires one at a time. You must have all the wires labeled
before you proceed. With all wires labeled, remove them from the
old unit.
ï Make sure the wires do not fall back inside the wall.
Wind them around a pencil to keep them from falling.
Loosen all screws on the old thermostat and remove it
from the wall.
W
G
R
ï Fill wall opening with non-combustible insulation to
prevent drafts.
3 Mount the 8035C
MENU
ï Separate front from back of unit. Press up on the
PROG
catch on bottom of thermostat and swing the body
away from the base, lift up to remove the body
from the base. Hold the base against the wall, with
the wires coming through the opening below the
RESET
terminal block.
ï Position the base for best appearance. (If you
chose to use the optional wall plate, hold the wall
plate against the wall, with the wires coming through the
opening. Then pull the wires through the opening in the
base unit. Position the base unit for best appearance.)
ï Attach the base to the wall with the three screws
provided.
If you are mounting the base to sheet rock or if you are
using the old mounting holes, use the plastic anchors
A
provided. Drill a 3/16-in.(4.8mm) hole for the insert at
each screw location, then mount the base.
Terminal
Block
Base
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PG 4
Wall Plate
PG 5
Rear View of control unit
4 Gas-Electric Selection
REFER to the back of the Control Unit:
ï If you have Electric Heat or a Heat
Pump (without auxiliary heat) you must
place the Gas/Electric jumper in the
ELECT position (thermostat controls the
Fan).
ï If you have Gas Heat the Gas/Electric
Jumper should be in the GAS position
(furnace controls the Fan ).
GAS ELECT
5 Install Batteries
The 8035C requires batteries to operate
your furnace and retain its programming in memory.
Switch MODE switch to OFF and the FAN switch to
AUTO.
Gas/ Electric
jumper
ï Insert 2 AA alkaline batteries according to the
polarity noted in the compartment.
ï Press the RESET button to clear transient program
AA
memory. Initially, all LCD segments will go off.
NOTE: Replace the batteries when this LOW battery
indicator appears on the display or once a year. When
replacing batteries, you have approximately 1/2
minute before your custom program is lost.
AA
6 Power Options
Please be aware of the following power options.
1) The 8035C can run on batteries only. (2AA Alkaline)
The batteries will last well over 1 year. If the batteries are not replaced the
thermostat will stop working.
2) The 8035C can run on the C wire if available.
24VAC ONLY
As shown in the wiring diagrams, The C wire is the other side of the 24VAC
heating transformer. If the C wire is used, the batteries are then for AC power
loss only and will last much longer. The thermostat will continue working if the
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PG 6
PG 7
7 Wire Connections
Make sure your wires are labeled. This is necessary to determine which step-by-step
wiring diagram you should use. This may require you to find the 'other end' connection for
each wire on your heating or air conditioning equipment and read the label there.
If you have a Zoned Heating/Cooling system with multiple thermostats, please refer to our
Before you Connect Wires
Please refer back to these guidelines for safe and secure wire connections.
ï Take care not to damage the labels for each wire in handling.
ï Strip insulation 3/8 in. (9.5mm) from wire ends.
ï Connect labeled wires only to a terminal with corresponding letter.
ï Bend the wire slightly, insert the wire under the screw and tighten the
down onto the wire.
D o n o t a llo w
Caution
w ir e s t o t o u c h
e a c h o t h e r o r p a r t s o n u n it .
W ir e s m u s t b e r o u t e d t h r o u g h
t h e h o le in t h e b a c k p la t e , b e lo w
t h e t e r m in a l b lo c k , o r t h e y w ill
h it p a r t s o n t h e c o v e r .
What Wires Do You Have?
From Furnace
And AC unit
From Furnace
And AC unit
From Furnace
From Furnace
C
W
Go To Page 11
PG 8
Go To Page 12
Go To Page 13
Go To Page 14
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If you do not find the wiring information for your
system try our website at
From heat pump
w/o Aux heat
MENU
or Customer Support at
PROG
888-515-2585
7 Wire Connections cont
RESET
When you have finished connecting
the wires, close cover and attach
control unit to wall unit. Hook the top
of the body onto the base, swing the body down, and
snap the body onto the base.
Go To Page 15
Follow these procedures to verify you have
correctly installed the unit.
8 Check Unit
To check HEAT mode:
ï Set the mode switch to HEAT. Set the fan switch AUTO.
ï Touch the main temperature display then touch the TEMP UP arrow to
raise the target temp to 90o. Touch HOME. Wait 5 min.
ï Verify that heat is blowing from the system.
PG 9
To check COOL mode:
ï Set the mode switch to COOL.
ï Touch the main temperature display then touch the
TEMP DOWN arrow to 5o below the room
temperature.
PROGRAM
button
MENU
button
MENU
PROG
ï Touch HOME. Wait 5 min.
ï Verify that cool air is blowing from the system.
To check Fan: (If you connected the G wire)
ï Switch Mode to OFF during fan test.
ï Switch the FAN switch to the ON position. Verify
air is blowing from vents.
RESET
ï After test, return to Fan switch to AUTO, and
Mode to HEAT or COOL
Mode
Switch
Fan
Switch
Congratulations, you have successfully installed your unit. Please
proceed to the OPERATING Guide to initialize the new thermostat.
REMEMBER, Mode Switch must be in HEAT or COOL to operate.
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PG 10
2 WIRE Heating
(GAS MILLIVOLT or 24vac
From Furnace
STEP 1 - Connect the R
(or RH) wire to the RH
Thermostat
A
terminal on the thermostat.
This connects the Heater
Power to the thermostat.
jumper
wire
C
W
C
R
W
STEP 2 - Connect the W wire to the W
terminal on the thermostat.
HEAT
Power
HEAT
F U R N A C E
This connects the heater control line to
the thermostat.
Your Heater is now connected to the thermostat.
NOTE: Wires marked with the dotted line are optional.
Return To Page 9
PG 11
3 WIRE
From Furnace
Thermostat
STEP 1 - Connect the
R (or RH) wire to the
RH terminal on the
A
jumper
wire
thermostat. This
connects to the Heater
Power .
C
RH
W
G
Heat
Power
Heat
FAN
F U R N A C E
STEP 2 - Connect the W wire to
the W terminal on the thermostat.
This connects the heater control
line to the thermostat.
NOTE: Wires marked with the
dotted line are optional.
STEP 3 - Connect the G wire to the G terminal on the
thermostat.
This connects the Fan to the thermostat.
Return To Page 9
Your system is now connected to the thermostat.
PG 12
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4 WIRE
From Furnace
and AC unit
STEP 1 - Connect the Y wire
to the Y terminal on the
Thermostat
A
thermostat. This connects to
the Cooler compressor.
jumper
wire
STEP 2 - Connect the RH or R
G
RH
W
Y
Cool
C
wire to the RH terminal on the
Heat
Power
Heat
FAN
Comp
thermostat.
H V A C S Y S T E M
This connects the Heater/Cooler Power.
STEP 3 - Connect the W wire to the W terminal on the thermostat.
This connects to the heater control line.
STEP 4 - Connect the G wire to the G terminal on the Thermostat.
This connects to the Fan.
Return To Page 9
NOTE: Wires marked with the dotted line are optional.
PG 13
5 WIRE
From Furnace
and AC unit
STEP 1 - Remove the red
Thermostat
Jumper wire.
A
STEP 2 - Connect the Y
wire to the Y terminal on
the thermostat. This connects
RH
Remove
jumper
wire
RC
G
W
to the Cooler compressor.
STEP 3 - Connect the RH wire to the
G
RC
COOL
RH
W
Y
Cool
Heat
FAN
Comp
Power
C
RH terminal on the thermostat. This connects to
the Heater Power .
HEAT
Power
HVAC SYSTEM
STEP 4 - Connect the RC wire to the RC terminal
on the thermostat. This connects to the Cooling Power .
STEP 5 - Connect the W wire to the W terminal on the thermostat.
This connects to the heater control line.
STEP 6 - Connect the G wire to the G terminal on the Thermostat.
This connects to the Fan.
Your HVAC system is now connected to the thermostat.
Return To Page 9
NOTE: Wires marked with the dotted line are optional.
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PG 14
STEP 1 - Connect the G
wire to the G terminal on the
thermostat.
HEAT PUMP
without auxiliary heat
From Furnace
and AC unit
jumper
wire
Thermostat
This connects the Fan.
STEP 2 - Add a jumper wire
between W and Y.
Y
A
O
or
B
jumper
wire
O or B
STEP 3 - Connect the Y wire
to the Y terminal on the
thermostat.
R
C
G
R
O or B
Y
C
24VAC
Power
Change
Over
Comp
FAN
This connects the Compressor.
Single Stage HEAT PUMP
STEP 4 - Connect the O or B wire to the O or B
terminal on the thermostat. (If you have both O
and B contact Ritetemp or your local HVAC
NOTE: Wires marked with the
dotted line are optional.
contractor for further help) This connects the change over valve.
STEP 5 - Connect the R wire to the RC terminal on the Thermostat.
This connects to the 24vac power.
Your HVAC system is now connected to the thermostat.
Return To Page 9
PG 15
8035C Features
The 8035C can be used with most 24 volt gas, oil or electric heating and air conditioning systems,
single-stage heat pumps or gas millivolt heating systems. It cannot be used with 120 volt heating
systems or multistage heat pumps. Ask The Home Depot for other thermostats to control those
systems.
The 8035C is programmable. There are four programming
periods per day. Each period can be programmed
MENU
separately.
PROG
You can use the built-in time/temperature programs, or alter
them to suit your schedule.
The 8035C separately programs each weekday, Saturday,
and Sunday - for both heating and cooling.
You can easily override the programmed temperatures for as
little as one programming period or for an entire vacation.
RESET
The large liquid crystal touch screen display shows time, day
of the week, room and set temperatures. It will also remind
you when the filter should be changed in your blower.
Temperature swing adjustment lets you fine-tune your systemfor maximum comfort and
energy efficiency.
A 4-minute minimum off time in COOL protects your air conditioning system from being
damaged.
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PG 16
Two "AA" batteries (included) are used to retain your time and temperature programs, and to
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