Ritetemp 8050 programmable Thermostat
Tools
- You will need #1 Phillips screwdriver (small) and
- Drill with 3/16-in. (4.8mm) bit for this installation.
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.
Remove 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.
- Attach labels (enclosed) to each wire for identification.
- Label the wires one at a time. You must have all the wires labeled before you proceed. With wires all labeled, remove them from the old unit.
- 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 opening with fiberglass insulation to prevent drafts
Mount the 8050
- Separate front from back of unit. Press up on the 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 terminal block. 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.)
- 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 provided. Drill a 3/16-in.(4.8mm) hole for the insert at each screw location, then mount the base.
Before you Connect Wires
Strip insulation 3/8 in. (9.5mm) from wire ends. Take care not to damage the labels for each wire in handling. 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
Optional Wire Connections
Determine which step-by-step wiring diagram you should use. Make sure your wires are labeled. 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 wire marked “C” its connection is optional. If you do connect it, the thermostat will draw power from the C wire and this will extend battery
What Wires Do You Have?
- R – Single source power for heat/cool
- Note: R connects to both RC and RH using the Orange jumper
- RH or 4 – HEATING POWER
- RC – COOLING POWER
- W – HEATING CONTROL
- G – FAN RELAY
- C – Common side of Heating Power
- Y – COMPRESSOR
- O – DAMPER OR CHANGEOVER VALVE (POWERED IN COOL)
- B – DAMPER OR CHANGEOVER VALVE (POWERED IN HEAT)
When you have finished making connections, hook the top of the body onto the base, swing the body down, and snap the body onto the base.
Install Batteries
- The 8050 requires batteries to operate your furnace and retain its programming in memory.
- Switch MODE switch to OFF and the FAN switch to AUTO.
- Remove the front panel battery cover and install 2 AA alkaline batteries according to the polarity noted in the compartment. Initially, all LCD segments will go on.
- Press the RESET button to clear transient program memory.
NOTE: Replace the batteries when this LOW battery indicator appears on the display or once a year. When replacing batteries, you have approximately one minute before your custom program is lost 
Check Unit
- Follow these procedures to verify you have correctly installed the 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.
- To check COOL mode: Set the mode switch to COOL.
- Press the TEMP DOWN button to a temp 5 degrees below the room temperature.
- Allow the system 5 minutes to respond.
- Verify that cool air is blowing from the system.
- To check Fan: (If you connected the G wire – fan relay)
Switch the FAN switch to the ON position. Verify that air is blowing from the system. Return to AUTO position for normal operation
Power Options
- The 8050 can run on batteries only. (2AA Alkaline) 24VAC and MV
- The batteries will last well over 1 year. If the batteries are not replaced the thermostat will stop working. Use the MV/C power jumper position.
- The 8050 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 batteries die. Use the MV/C power jumper position
FOR ADVANCED USERS ONLY
The 8050 can run on 24VAC series power
Power for the thermostat is borrowed from the furnace relay. Therefore this options ONLY works with 24VAC systems, and with a heat relay current of between .2 and .6 amps. Do not use the FURN mode unless this current can be verified by a heating contractor. The batteries are then for AC power loss only and will last much longer. The thermostat will continue working if the batteries die. Use the FURN power jumper position. To locate the Power Mode Jumpers. Remove the control unit from the wall mount, turn it over, and locate the jumper. It is set at the factory on MV/C. Change it from MV/C to FURN to use series power.
NOTE: This option works with 24VAC, .2 to .6 amp. systems only. Verify operation. If it doesn’t work go back to options 1 or 2.
- STEP 1 – Connect the R (or RH) wire to the RH terminal on the thermostat.
- This connects the Heater Power to the thermostat.
- 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.
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.
- 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
NOTE: Wires marked with the dotted line are optional.
- STEP 1 – Connect the Y wire to the Y terminal on the thermostat. This connects to the Cooler compressor.
- 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.
- STEP 4 – 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.
- STEP 1 – Remove the orange Jumper wire.
- STEP 2 – Connect the Y wire to the Y terminal on the thermostat. This connects to the Cooler compressor.
- STEP 3 – Connect the RH wire to the RH terminal on the thermostat. This connects to the Heater Power .
- 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.
NOTE: Wires marked with the dotted line are optional
- STEP 1 – Connect the G wire to the G terminal on the thermostat. This connects the Fan.
- 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 contact
- Ritetemp or your local HVAC 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
8050 Features
The 8050 can be used with most 24 volt gas, oil or electric heating and air conditioning systems, singlestage 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 8050 is programmable. There are four 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 8050 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. A 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 4-minute minimum off time in COOL protects your air conditioning system from being damaged. Two “AA” batteries (not included) are used to retain your time and temperature programs, and to run the thermostat.
REFERENCE:
DOWNLOAD MANUALS:
Ritetemp 8050 programmable Thermostat Installatinal Guide
OTHER MANUALS:
Ritetemp 8050 programmable Thermostat Operational Manual
