Robertshaw 9620 PROGRAMMABLE THERMOSTATS
Important Instruction
WARNING:
- Always turn off power at the main power source by unscrewing fuse or switching circuit breaker to the off position before installing, removing, cleaning, or servicing thermostat.
- Read all of the information in this manual before installing or programming this thermostat.
- This is a 24V AC low voltage thermostat. Do not install on voltages higher than 30V AC.
- All wiring must conform to local and national building and electrical codes and ordinances.
- Do not short (jumper) across terminals on the gas valve or at the system control to test installation. This will damage the thermostat and void the warranty.
Features
- Four preprogrammed ENERGY STAR® setpoints for each day of the week
- Quickset™ programming for quickly programming all days of the week simultaneously
- Energy Efficient Recovery (EER™)
- Residual cooling for added air conditioning efficiency
- Two AA ENERGIZER® brand batteries retain program memory, even during power outages
- Low battery indicator
- Multi-colored LED indicators for system status
- Zone compatible as a master thermostat
- Fahrenheit/Celsius display option
- Programmable from 45°F (7°C) to 90°F (32°C)
- Accuracy within ±1 degree
- Adjustable temperature differential: 1-3 degrees
- Maintains summer and winter programming
Step 1: Replacing the Existing Thermostat
- Turn off power to the heating and cooling system.
- Remove the cover of the fold thermostat to expose wires. (Figure 1
- Disconnect wires one at a time from existing terminals. use enclosed labels to mark existing wires. Refer to cross-references in
- Table 1 if existing wiring does not directly match the labels.
- If you have any questions about cross-referencing the old terminal to the new label, reference your equipment installation manual, or a licensed contractor, or call Robertshaw Tech Support (800) 445-8299.
- Remove the existing thermostat base from the wall
TABLE 1
| TABLE 1 | ||
| Old Terminal | Ne w Label | Description |
| R, V-VRor VR-R | R | 24 VAC |
| Y, Y1 or M | Y1 | Stage 1Cooling/Heating Circuit |
| Oor R | O | Reversing Valve (Cooling Mode) |
| B | B | Reversing Valve (Heating Mode) |
| Gor F | G | Fan Contactor Circuit |
| Y2 | Y2 | 2nd Stage Cooling Circuit |
| W1 or W2 or W-U | W2 | 2nd Stage Heating Circuit |
| L or X | L | System Monitor LED |
| E | E | Emergency Heating Circuit |
| C, X or B | C | 24 VACTransformer Common Side |
Recycling Thermostat
If this thermostat is replacing a thermostat that contains mercury in a sealed tube, do not place your old thermostat in the garbage. Contact your local waste management authority for instructions regarding proper disposal of the thermostat. If you have any questions, call Robertshaw technical support at 1-800-445-8299
Step 2: Installing Model 9620 Thermostat
NOTE: FOR NEW INSTALLATIONS, MOUNT THERMOSTAT ON THE INSIDE WALL, 4-5 FEET ABOVE THE FLOOR. DO NOT INSTALL BEHIND A DOOR, IN A CORNER, NEAR AIR VENTS, IN DIRECT SUNLIGHT, OR NEAR ANY HEAT OR STEAM-GENERATING FIXTURES. INSTALLATION AT THESE PLACES WILL AFFECT THERMOSTAT OPERATION. IMPORTANT: THIS THERMOSTAT IS COMPATIBLE WITH 100% LOCKOUT SYSTEMS. TO RESET THE SYSTEM, TURN THE THERMOSTAT TO THE OFF POSITION FOR AT LEAST 60 SECONDS.
- Turn off power to the heating and cooling systems.
- Place COOL-OFF-HEAT-EM in the OFF position.
- Place AUTO-ON switch into the AUTO position.
- Remove the cover using a coin or screwdriver (Figure 2).
- Place the thermostat against the wall at the desired location. Make sure wires will feed through the opening on the base of the thermostat.
- Mark placement of mounting holes (Figure 3). Set base aside.
- Drill the marked holes using a 3/16″ drill bit. NOTE: Enclosed plastic anchors do not require a drilled hole for drywall.
- Tap plastic anchors into the holes.
- Align the base with plastic anchors and feed wires through the opening (Figure 3
- Secure base to wall with supplied screws.
- Terminal screws are loosened. Insert wires into the terminal strip (Figure 4) matching the label to the corresponding terminal (see Wiring Diagrams below). Tighten screws.
WIRING SAMPLE 
TERMINAL LEGEND
| TERMINALLEGEND – 9620 | |||
| TERM | EQUIPMENT TOCONNECT | REQ? | TERMINALFUNCTION |
| C | 24VAC common connection | Yes | For input of 24VAC common side of transformer |
| L | System fault indicator connection | No | For connection of system fault indicator (if present) |
| R | 24VAC hot connection | Yes | For input of 24VAC hot side of transformer |
| Y2 | Second stage cooling connection | No | Energizes on a call for sec- ond stage cooling |
| Y1 | First stage compressor connection | Yes | Energizes on a call for first stage heating or cooling |
| E | Emergency heat connection | No* | Energizes on a call for heat in the EM mode only |
| G | Indoor fan connection | Yes | Energizes with E, Y1, Y2 and W2 terminals or with FAN option switched to the ON position |
| W2 | Second stage heat connection | No* | Energizes on a call for sec- ond stage of heat (auxiliary heat) |
| O | Cool active reversing valve connection | Yes** | Energizes when in the in COOL mode |
| B | Heat active reversing valve connection | Yes** | Energizes when in the HEAT or EM modes |
| * For systems using a backup heat source. If separate E terminal connection is not available, jumper E and W2.
** Most heat pump systems will have a cool active ORa heat active reversing valve. Use the appropriate terminal. |
|||
- Install two AA ENERGIZER® brand batteries or equivalent into the battery compartment. Be sure to match the positive (+) ends of batteries with positive (+) battery terminals in the battery compartment.
- Replace the cover on the thermostat by snapping it into place.
- Turn on the power to the system. Test thermostat as described in the following section
Step 3: Testing the Thermostat
- Place the COOL-OFF-HEAT-EM switch into the COOL position
- Press the
button until the temperature setting is at least 3 degrees below the room temperature. The air conditioning system should turn on within a few seconds. - Put the COOL-OFF-HEAT-EM switch into the OFF position. The air conditioning system should turn off. The fan may continue to run for a short period of time.
- Put the COOL-OFF-HEAT-EM switch into the HEAT position.
- Press the
button until the temperature setting is at least 3 degrees above room temperature. The heating system should turn on. The fan may not turn on immediately, depending on the fan delay built into the furnace. - Put the COOL-OFF-HEAT-EM switch into the OFF position. The heating system should turn off. Once again, the fan may have a delay.
- Put the
AUTO-ON switch to the ON position. The blower fan should turn on. - Put the AUTO-ON switch to the AUTO position. The blower fan should turn off
Step 4: Customizing Your Thermostat
- Press SET and PROG/MAN.
- Release simultaneously.
- Press or to change time of day.
NOTE: THE TEMPERATURE DIFFERENTIAL IS FACTORY PRESET AT 1°. THIS MEANS THAT WHENEVER THE ROOM TEMPERATURE CHANGES BY ONE FULL DEGREE FROM THE TEMPERATURE SETTING, THE SYSTEM WILL TURN ON. IF THE SYSTEM TURNS ON TOO OFTEN, INCREASE THE TEMPERATURE DIFFERENTIAL
NOTE: THE SECOND STAGE TEMPERATURE DIFFERENTIAL IS FACTORY PRESET AT 2°. NOTE: THE RESIDUAL COOL FEATURE WILL KEEP THE SYSTEM FAN ON FOR AN ADDITIONAL 30, 60, OR 90 SECONDS AFTER THE COMPRESSOR CYCLES OFF IN COOL MODE. THE RESIDUAL COOL FEATURE CAN BE SET ONLY IN THE COOL MODE.
Changing Fahrenheit (F) to Celsius (C
Energy Efficient Recovery (EER™)
The Energy Efficient Recovery (EER™) feature looks ahead up to 2 hours prior to the end of the setback (or set-up) period to begin monitoring performance and calculating when to turn on your system. It also determines whether the auxiliary heat or cool stages should be activated prior to setpoint time to meet your chosen setpoint temperature. The thermostat will indicate EER in the display when this program feature is active. The EER™ feature will lockout the auxiliary stages until 20 minutes prior to the upcoming setpoint time to utilize the most energy-efficient first stage. The auxiliary stages of heating and cooling will be available during this lock-out period to maintain the setpoint temperature should the system not be able to keep up with the heating or cooling demand.
Step 5: Setting the Program
This Robertshaw thermostat is pre-programmed with the following ENERGY STAR® settings for the greatest energy savings
QuickSet™ Programming Mode
- Place COOL-OFF-HEAT-EM in the COOL or HEAT position.
- Press and hold SET. Press the button. Release simultaneously.
- The MORN indicator should be blinking. Program the time of day and the temperature as outlined in the Setting Daily Program section
Setting Daily Programming
- Place COOL-OFF-HEAT-EM in COOL position.
- Press SET button. The display will show a number from 1 to 7. This number represents the day of the week to be programmed. If programming individual days, press either or button to adjust the day of the week to program.
- Press SET. Press
to change MORN time. - Press SET. Press to change MORN temperature.
- Repeat steps 2-5 for DAY, EVE, and NITE.
- Repeat steps 2-6 above to program any other day of the week.
- Shift COOL-OFF-HEAT-EM to HEAT position.
- . Repeat steps 2-6 to program HEAT (winter) settings
Begin Programmed Operation
- Place AUTO-ON into AUTO.
- Place COOL-OFF-HEAT-EM into COOL or HEAT, depending on the season.
- Press the PROG/MAN button until the indicator is in the PROG position
Temporary Program Override
To temporarily increase or decrease the temperature
Manual Operation
- Press PROG/MAN until the indicator is in the MAN position
Reset
To reset the thermostat to factory preprogrammed conditions, press the RESET button located beneath the lower left corner of the display
LED Indicators
The LED indicators are used to indicate system activity. The AUX indicator illuminates during a call for second-stage heating. The auxiliary stages are used to maintain comfort during extreme in weather conditions. If the AUX LED is illuminated too frequently during periods of moderate temperature, check the differential settings (page 8). The CHECK indicator is used to monitor the system status. If the CHECK indicator is illuminated, call your local HVAC service provider. The EMER indicator is illuminated only when the system switch is moved to the EM (emergency heat) position. The EM position is used only when the primary stage of heat is not functioning or requires service.
Troubleshooting
If problems with thermostats cannot be resolved, call:
- Technical Support: (800) 445-8299
- Monday-Friday 7:30-5:30 CST
Warranty
Five-Year Limited Warranty
Maple Chase Company warrants to the original contractor installer, or to the original consumer user, each new Robertshaw thermostat to be free from defects in materials and workmanship under normal use and service for a period of five (5) years from date of purchase. This warranty does not cover batteries, damage caused by batteries, or damage resulting from improper installation, alteration, misuse or abuse of the thermostat occurring after the date of purchase. Maple Chase Company agrees to repair or replace at its option any thermostat under warranty provided it is returned within the warranty period, postage prepaid, with proof of the date of purchase. Cost of thermostat removal or reinstallation is not the responsibility of Maple Chase Company. Repair or replacement as provided under this warranty is the exclusive remedy of the consumer. Maple Chase Company shall not be liable for any incidental or consequential damages for breach of any express or implied warranty on this product, or under any other theory of liability. Except to the extent prohibited by applicable law, any implied warranty of merchantability or fitness for a particular purpose on this product is limited to the duration of this warranty. Some states do not allow the exclusion or limitation of incidental or consequential damages or allow limitations on how long an implied warranty lasts, so the above limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state
For warranty returns, send thermostat, shipping prepaid to:
- Uni-Line North America
- Warranty Claims Department
- 515 S. Promenade
- Corona, CA 91719
Maple Chase Company
- 2820 Thatcher Road
- Downers Grove, Illinois 60515
- United States of America
REFERENCE
DOWNLOAD MANUAL
Robertshaw 9620 PROGRAMMABLE THERMOSTATS User Manual