Page 1
Install guide 8050C
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COOL
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ENGLISH
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Customer Support: 888-515-2585 or
Visit our website www.ritetemp-thermostats.com
Made in China
1-405-061
Page 2
Install guide 8050C
To avoid electrical shock and to prevent damage to the furnace, air conditioner,
Caution
and thermostat, disconnect the power supply before beginning work.
This can be done at the circuit breaker, or at the appliance.
Tools
1 Location
.
On replacement installations, mount the new thermostat in place of the
old one if possible.
.
On new Installations, follow the guidelines listed below.
.
Locate the thermostat on an inside wall, about 5 ft. (1.5m) above the floor,
and in a room that is used often.
.
Do not install it where there are unusual heating conditions, such as: in
direct sunlight; near a lamp, radio, television, radiator register, or fireplace;
near hot water pipes in a wall; near a stove on the other side of a wall.
.
Do not locate in unusual cooling conditions, such as: on a wall separating
an unheated room; or in a draft from a stairwell, door, or window.
.
Do not locate in a damp area. This can lead to corrosion that will shorten
thermostat life.
.
Do not locate where air circulation is poor, such as: in a corner or an
alcove; or behind an open door.
.
Do not install the unit until all construction work and painting has been
completed.
.
This thermostat does not require leveling.
You will need #1 Phillips screwdriver (small) and
Drill with 3/16-in. (4.8mm) bit for this installation.
PG 1
Good
5ft.
(1.5m)
C A U T I O N
ï Your thermostat is a precise instrument.
ï Please handle it with care.
ï Turn off electricity to the appliance before installing or
servicing thermostat or any part of the system. Do not
turn electricity back on until work is completed.
ï Do not short (jumper) across electric terminals at control
on furnace or air conditioner to test the system.
ï This will damage the thermostat and void your warranty.
ï All wiring must conform to local codes and ordinances.
ï This thermostat is designed for use with 24 volt AC and
millivolt systems. The thermostat should be limited to a
maximum of 1.0 amps; higher amperage may cause
damage to the thermostat.
PG 2
Page 3
2 Label Wires from Old Unit
.
Switch electricity to the furnace and air conditioner OFF;
then proceed with the following steps.
.
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.
.
Carefully attach labels (enclosed) to each wire.
You must have all the wires labeled before you proceed.
Label the wires one at a time.
Read instructions carefully before removing any wiring from existing thermostat. Wires
Caution
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 comply with the standard.
3 Remove old unit
Remove the wires from the terminals of the old thermostat.
.
Make sure the wires do not fall back inside the wall.
.
Wind them around a pencil to keep them from falling.
.
Remove the old thermostat from the wall. Fill wall
B
G
opening with fiber glass insulation to prevent drafts.
4 Mount the 8050C
.
Separate front from back of unit. Press up on the
catch on the bottom of the thermostat and swing the
C
G
Y
W
H
R
B
O
C
R
2
W
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 terminal block.
.
Position the base for best appearance (If you choose
to use the optional wall plate, hold the wall plate
against the wall with the wires coming through the
opening.)
.
Attach the base to the wall with the two
screws provided.
.
If you are mounting the base to sheet
rock or if you are using the old
mounting holes, use the plastic anchors
Y
W
H
R
B
O
RC
W2
C
provided. Drill a 3/16-in. (4.8mm) hole
for the insert at each screw location,
and then mount the base.
Wall Plate
W
Terminal
Block
A
G
PG 3
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Thermostat Base
PG 4
Page 4
5 Gas-Electric Selection
I
REFER to the back of the Control Unit:
If you have Electric Heat or a Heat Pump you must place the Gas/Electric jumper in the ELECT
position (thermostat controls the Fan).
If you have Gas Heat the Gas/Electric Jumper should be in the GAS position (furnace controls
the Fan).
6 Heat Pump Switch
If you have a HEAT PUMP:
.
Change the NORMAL/PUMP
switch on the back of the unit
to PUMP.
.
I
f your heat pump has auxiliary
heat, select the DIFFERENTIAL
jumper. This controls how often
GAS
ELECT
your auxiliary heat will come on.
'2' is most comfort (cold climates)
'4' is most efficient (warm
climates)
The unit must be reset when a
Gas / Electric
jumper
jumper is changed.
7 Install Batteries
The 8050C requires batteries to operate your system
and retain its programming in memory.
.
Switch MODE switch to OFF and the FAN switch to
AUTO.
.
Insert 2 AA alkaline batteries according to the
polarity noted in the compartment.
.
Press the RESET button to clear the transient
program memory. Initially, LCD display will go off.
Circuit
Board
A
G
Y
Differential
jumper
12/24hr
jumper
Y
R
E
T
AT
B
W
RH
B
O
RC
o
C -oF
jumper
2 3 4
ON F
SHORT C
OPEN12
SHORT24
Normal/Heat Pump
switch
AA
AA
T
E
S
E
M
I
T
P
D
S
M
TI
K
C
O
L
T
C
O
L
T
S
E
Y
S
E
C
M
N
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E
T
G
R
E
M
E
TI
P
EXT
N
E
OM
D
L
H
Y
O
H
A
P
D
M
Y
E
P
T
O
C
M
T
A
E
R
S
G
E
O
R
R
P
E
D
O
M
W2
C
NORMAL PUMP
PG 5
E
E
M
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E
T
L
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W
E
I
V
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R
N
A
F
NOTE: Replace the batteries when this LOW battery
indicator appears on the display or once a year.
With batteries removed, you have approximately
30sec before your custom programming is lost.
8 Power Options
Please be aware of the following power options
1) The 8050C 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 8050C can run on the C wire if available. (24 VAC 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 for AC power loss only and are not required.
PG 6
Page 5
PG
9 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
website at www.ritetemp-thermostats.com for installation notes or call 1-888-515-2585.
7
Before you Connect Wires
Please refer back to these guidelines for safe and secure wire connections.
.
Take care not to damage the labels for each wire in handling.
.
Strip insulation 3/8 in. (9.5mm) from wire ends.
.
Connect labeled wires only to a terminal with corresponding letter.
.
Bend the wire slightly, insert the wire under the contact plate and tighten
the screw down onto the wire.
What Wires Do You Have?
The Wire chart shows wire labels used on
Ritetemp thermostats. Please determine what
wires you have and select the correct wiring
diagram to "go to" on pages 9.
Caution
each other or parts on unit.
Wires must be routed through
the hole in the back plate, below
the terminal block, or they will
hit parts on the cover.
Do not allow
wires to touch
The Wire Chart below will help you determine the terminal connections you will use
on your new thermostat. See chart section that applies to your heat/cool system.
OLD THERMOSTAT NEW THERMOSTAT DESCRIPTION
R or RH or 4 or V RH or RC(leave jumper) Power Wire
ONE
Power
Wire
RH or 4 or V RH (remove jumper) Power Heat
TWO
Power
Wires
RC or R RC (remove jumper) Power cool
W or H W Heat return
Y or M Y Cool return (compressor)
G or F G Fan return
C or X C AC source for thermostat
W2 or H2 W2 2nd stage of heat
Control wires
Y2 do not connect 2nd stage of cool (n/a)
W2 W2 Heat pump Aux heat
E Do not connect
O (see note below) O Dmpr/Chg-over (pwr in cool)
HEAT
PUMPS
B (see note below) B Dmpr/Chg-over (pwr in heat)
5 or R RH Power wire (pwr)
4 or W W Turn Valve on
ZONED
MOTOR
VALVES
6 or Y or B A Turn Valve off
R RH Power wire (pwr)
Y or B W Turn Valve off
W A Turn Valve on
ZONED
SOLENOID
VALVES
Note: On a heat pump, if O and B are both present, connect O to O and tape off B.
For wiring support call 1-888-515-2585 or visit our website at www.ritetemp-thermostats.com
PG
8
Page 6
NOTE: Wires marked with dotted line are optional.
ace
n
r
Fu
From
C
W
RH
R
or
From
ace
n
r
Fu
G
RH
or R
W
C
Go To Page 11
Go To Page 12
ace
n
r
Fu
From
AC unit
And
C
W
Go To Page 13
R
or
RH
G
ace
n
r
Fu
From
AC unit
Y
And
Y
RH
RC
C
G
W
Go To Page 14
Normal
om
Fr
two stage s
ystem
W2
From hea
with ou
pu
t
Aux he
t
mp
at
Y
O
Fr
with
om
heat pump
Aux heat
W or W2
Y
or
W
C
G
R
Go To Page 15
C
Go To Page 16
B
G
R
C
R
O or
B
G
Go To Page 17
If you do not find the wiring information for your system try our website:
www.ritetemp-thermostats.com for more information or call our
customer service at 888-515-2585.
PG 9
9 Wire Connections cont
When you have finished connecting the wires 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.
10 Check Unit
To check HEAT mode:
.
Set the mode switch to HEAT. Set the fan switch AUTO.
.
Using the TEMP UP button raise the set point to 90deg.
.
Allow the system 5 min to respond.
.
Verify that heat is blowing from the system.
.
Set the mode switch to OFF.
To check COOL mode:
.
Set the mode switch to COOL.
.
Press the TEMP DOWN button to a temp 5o below room
temperature.
.
Allow the system 5 min to respond.
.
Verify that cool air is blowing from the system.
.
Set the mode switch to OFF.
To check Fan:
.
Switch mode to OFF during fan test.
.
Switch the FAN switch to the ON position. Verify air is blowing from vents.
.
After test, return fan switch to AUTO, and mode to HEAT or COOL.
Follow these procedures to verify you
have correctly installed the unit.
TEMP UP
arrow
TEMP DOWN
arrow
Mode 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.
G
Y
W
RH
B
O
RC
2
W
C
N
A
F
N
O
O
T
AU
F
F
L
O
O
O
C
T
EA
H
N
FA
N
O
O
T
U
A
F
F
L
O
O
CO
T
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H
Fan Switch
PG 10
Page 7
om Furnace
Fr
R
or
RH
2 WIRE
C
W
NOTE: Wires marked with
the dotted line are optional.
STEP 1 - Connect the R (or RH) wire to the RH terminal on the
thermostat. This connects to the Heater Power.
STEP 2 - Connect the W wire to the W terminal on the thermostat. This
connects the heater control line to the thermostat.
Your heater is now connected to the thermostat.
RH
G
W
or R
NOTE: Wires marked with
the dotted line are optional.
From
Furnace
C
jumper
wire
R
C
HEAT
Power
FURNACE
W
HEAT
Go To Page 10
3 WIRE
jumper
wire
W G
RH
C
Heat
Power
FURNACE
Heat
Thermostat
PG 11
Thermostat
FAN
STEP 1 - Connect the R (or RH) wire to the RH terminal on the
thermostat. This connects to the Heater Power.
STEP 2 - Connect the W wire to the W terminal on the thermostat.
This connects the heater control line to the thermostat.
STEP 3 - Connect the G wire to the G terminal on the thermostat.
This connects the Fan to the thermostat.
Your system is now connected to the thermostat.
Go To Page 10
PG 12
Page 8
ce
rna
om Fu
Fr
nit
C u
d A
an
C
W
RH
or
R
G
Y
STEP 1 - Connect the Y wire
to the Y terminal on the
thermostat. This connects to
the Cooler compressor.
4 WIRE
jumper
wire
STEP 2 - Connect the RH or R wire to the RH
terminal on the thermostat.
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.
RH
C
Heat
Power
HVAC SYSTEM
NOTE: Wires marked with
the dotted line are optional.
STEP 4 - Connect the G wire to the G terminal on the Thermostat.
This connects to the Fan.
Go To Page 10
Your HVAC system is now connected to the thermostat.
NON-HEAT PUMP
W
Y
Cool
Heat
Comp
Thermostat
G
FAN
PG 13
nace
ur
F
rom
F
t
uni
AC
and
Y
RC
C
G
W
STEP 3 - Connect the RH wire to the RH terminal
on the thermostat. This connects to the Heater
Power.
STEP 1 - Remove the Jumper wire.
STEP 2 - Connect the Y wire
RH
to the Y terminal on the
thermostat. This connects to
the Cooler compressor.
5 WIRE NON-HEAT PUMP
Remove
jumper
wire
RHRC
COOL
Power
C
HEAT
Power
STEP 4 - Connect the RC wire to the RC terminal
on the thermostat. This connects to the Cooling
Power.
NOTE: Wires marked with
the dotted line are optional.
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.
Go To Page 10
Your HVAC system is now connected to the thermostat.
Thermostat
Y
Cool
Comp
G
FAN
W
Heat
HVAC SYSTEM
PG 14
Page 9
Normal
om
Fr
ystem
two stage s
W2
STEP 1 - Connect the G wire to
the G terminal on the thermostat.
This connects the Fan.
W
C
G
R
STEP 2 - Connect the W wire
to the W terminal. This
connects the 1st stage heat.
STEP 3 - Connect the W2 wire to the W2
terminal. This connects the 2nd stage heat.
STEP 4 - Connect the R wire to the RH terminal
on the Thermostat. This connects to the 24vac
power.
Your HVAC system is now connected to the
thermostat. (If the system also has AC, connect the Y
wire to the Y terminal on the thermostat. You may also
have a RC wire if so remove jumper wire between RH
and RC and connect the RC wire to the RC terminal.)
NORMAL 2 Stage
Heat System
jumper
wire
RW2
C
Two Stage
Furnace
W
Two Stage Heat System
NOTE: Wires marked with
the dotted line are optional.
Go To Page 10
Thermostat
G
FAN
PG 15
pump
heat
rom
F
heat
ux
A
o
w/
B
C
G
R
STEP 1 - Connect the G wire to
Y
the G terminal on the thermostat.
O
This connects the Fan.
or
STEP 2 - Add a jumper wire
between W and Y.
STEP 3 - Connect the Y wire to
the Y terminal on the thermostat.
This connects the Compressor.
STEP 4 - Connect the O or B wire to the O or B
terminal on the thermostat. (If you have both O and B
wires, use the O and tape off the B.) 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.
HEAT PUMP
w/o Auxiliary Heat
jumper
wire
Thermostat
jumper
O or B
wire
C
24VAC
Power
O or B
R
Change
Over
Y
Comp
G
FAN
Single Stage HEAT PUMP
NOTE: Wires marked with
the dotted line are optional.
Go To Page 10
PG 16
Page 10
W
STEP 1 - Connect the G wire to
heat pump
om
Fr
with Aux heat
C
or
the G terminal on the thermostat.
W2
This connects the Fan.
Y
O
or
B
G
R
STEP 4 - Connect the O or B wire to the
STEP 2 - Add a jumper wire
between W and Y.
STEP 3 - Connect the Y wire to
the Y terminal on the thermostat.
This connects the Compressor.
O or B terminal on the thermostat. (If you have both
O and B wires, use the O and tape off the B).
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.
STEP 6 - Connect W or W2 to W2 on the thermostat.
This connects the AUX heat.
Your HVAC system is now connected to the thermostat.
8050C Features
HEAT PUMP
with Auxiliary Heat
jumper
wire
Thermostat
jumper
O or B
wire
(not both)
C
AUX
Heat
24VAC
Power
O or B
R
Change
Over
HEAT PUMP
Y
Comp
G
FAN
NOTE: Wires marked with
the dotted line are optional.
Go To Page 10
PG 17
The 8050C can be used with most 24-volt gas, oil or electric heating and air
conditioning systems, all heat pumps, and gas millivolt heating systems. It cannot be
used with 120 volt heating systems. Ask The Home Depot for other thermostats
to control line voltage systems.
The 8050C is programmable. There are 4 programming periods per day. Each period
can be programmed separately.
You can use the built-in time/temperature programs, or alter
them to suit your schedule. The 8050C separately programs
each day of the week for both heating and cooling.
easily override the programmed temperatures for as little as one
N
A
F
ON
O
UT
A
FF
L
O
OO
C
AT
HE
programming period or up to an entire vacation.
You can
The large backlit liquid crystal 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 system for maximum comfort
and energy efficiency.
A 5-minute minimum off time protects your compressor system from being damaged.
Two "AA" batteries are used to retain your time and temperature programs and to run
the thermostat.
PG 18
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