Venstar T0051FS Programmable Thermostat
Front Panel
- Liquid Crystal Display with Thermoglow
- Warmer/Cooler Buttons
- On/Off Button
- Fan Button
- Heat or Cool Indicator Red = Heat, Green = Cool
- Temperature Sensor
Display
- Mode Indicators
Selects the operational mode of the equipment.
HEAT – Indicates the heating mode.
COOL – Indicates the air conditioning mode. AUTO – Indicates the system will automatically
changeover between heat and cool modes
as the temperature varies.
PROGRAM ON – Indicates the time period
program is enabled to run.
OFF – Indicates heating and cooling are turned off. - Clock
Indicates the current time. This clock is also used to program the time period schedules. - Room Temperature Display
Indicates current room temperature and displays the outside temperature when connected. - Desired Set Temperature
Indicates desired room temperature(s).
- Morning, Day, Evening & Night icons – Pages 9-12
Indicates the day part of the time period program. - Setup icon – Pages 13-16
Indicates the thermostat is in the setup mode. - Fan On icon – Page 5
Indicates continuous fan operation.
Wahen Fan On is not lit – indicates the fan will only operate when necessary to heat or cool. - Locked icon – Page 20
Indicates the keypad has been locked.
Quick Start Set the Clock and Go
SmartTemp Explanation
The SmartTemp feature can save up to 30% or more in operating costs over standard thermostats. SmartTemp gives you almost the same energy savings as thermostats with motion detectors and/or door interlocks at a much lower cost for both the thermostat and installation. No external wiring is required for this feature.
HOW IT WORKS:
The thermostat has a built in clock. the thermostat can automatically go into an unoccupied setting up to four times a day(default unoccupied settings are 78 degrees and 68 degrees). The default times for unoccupied are 8:00 AM, 12:15 PM, 3:00 PM, and 7:00PM. The rationale for these times are:
8:00 AM: Most guests are expected to leave the room by 8:00 AM and either check out or be gone until check-out time.
12:15 PM: The room will not likely be occupied between the check-out and check-in times.
3:00 PM: Housekeeping staff usually place the thermostat into an occupied mode while cleaning the room.
7:00 PM: Guests typically leave for dinner and the room remains unoccupied until they return to retire for the evening.
The thermostat only displays the setpoint that the hotel guest has selected. When the thermostat is in an unoccupied state, only room temperature is displayed, which the guest will assume is the setpoint temperature.
The number of time periods, their start times, and the unoccupied setpoints can be set by hotel management to maximize savings of operating costs and customer comfort.
Customer complaints are virtually nonexistent with thermostats equipped with the SmartTemp feature, compared to a motion sensor and door interlock thermostats.
SmartTemp Explanation
Surveys have shown that even though a hotel can expect to realize an estimated 30% energy savings in heating, cooling and fan costs, the hotel guest is unaware that the thermostat is automatically entering an “unoccupied” state several times throughout the day. The reason for this is that while the hotel guest is in the room, he or she always has complete control of the actual temperature. If the hotel guest happens to notice that the thermostat has entered into “unoccupied” (which is rare), he or she usually assumes that a maid, bar service, or turn-down service person has been in the room and changed the setting.
Programming
Occupied & Unoccupied Periods
To maximize energy savings, the program allows for a day to be broken into four time periods with every day of the week sharing the same program. For each time period, you may choose to have a unique setpoint or simply use the unoccupied setpoints. If four different time periods are not required, then multiple time periods may be set to the same start time.
SMARTTEMP – When a time period is set to OFF, unoccupied settings will be used for that period. During unoccupied operation, the large numbers change from displaying the setpoint to displaying the room temperature and the degree icon will flash. If a guest enters the room and presses the WARMER or COOLER button, the room temperature will be accepted as the setpoint and then can be raised or lowered. This setpoint will remain in effect until the start of the next time period. This enables the guest to maintain control over the room temperature (within setpoint limits), while maximizing energy savings.
Advanced Setup
Advanced Setup Table
| Step # | Description | Range | Factory Default |
| 1 | Time of day clock set | 24 hour | 12:00 Am |
| 2 | Display Mode | 0 – 3 | 3 |
| 3 | Dry Contact Sense | NC /NO | NO |
| 4 | Dry Contact Latch | Off / On | Off |
| 5 | Unoccupied Cool setpoint** | 35 – 99, OF | OF |
| 6 | Unoccupied Heat setpoint** | OF, 35 – 99 | OF |
| 7 | This setup step is unused | N/A | N/A |
| 8 | This setup step is unused | N/A | N/A |
| 9 | Maximum allowable Heat setpoint | 35 – 99 | 76 |
| 10 | Minimum allowable Cool setpoint | 35 – 99 | 68 |
| 11 | Heat Pump | On / Off | On |
| 12 | Reversing Valve Polarity | O / B | O |
| 13 | Electric Heat | On / Off | Off |
| 14 | Fan Speeds | 1 – 3 | 1 |
| 15 | Deadband | 1 – 6 | 2 |
| 16 | Minimum differential – Heat / Cool | 0 – 6 | 2 |
| 17 | Cycles per Hour Limit | d, d1, 2 – 6 | d |
| 18 | Backlight | On / Off | On |
| 19 | Fahrenheit or Centigrade | F / C | F |
** These unoccupied setpoints are used only when the Dry Contact is asserted.
About Advanced Features & Operation
- CLOCK BACKUP – In the event of a power loss, the thermostat’s internal clock will continue to keep proper time for a minimum of 48 hours without external power or batteries. The T0051FS stores the time at which power is removed and resumes timekeeping from that point, upon power restoration.
- 2 STAGE OPERATION – The 2nd Stage of Heat or Cool is turned on when (1) the 1st Stage has been on for a minimum of two minutes, and (2) the temperature spread from the setpoint is equal to or greater than: the setpoint plus the deadband, plus 2 degrees.
- MINIMUM HEAT/COOL SETPOINT DIFFERENCE – The Heat
and Cool setpoints will not be allowed to come any closer to each other than the value set in Advanced Setup step # 16, on page 16. This minimum difference is enforced during Auto-changeover and Program On operation. - DRY CONTACT SENSE – N.O.=Normally Open. N.O. setting with dry contact closure enforces unoccupied settings from normal operation. N.C.=Normally Closed. N.C. setting with dry contact closure enforces normal operation from unoccupied settings. This dry contact works in all modes but OFF.
- EMERGENCY HEAT – Is a feature available to Heat Pump installations. To turn on the Emergency Heat press the
FAN button. While holding the FAN button press the WARMER button for 2 seconds. The Cool setpoint display will read ‘EH’.
During Emergency Heat, the thermostat will turn on the fan and the 2nd stage of heat when there is a demand for heat, which locks out the 1st stage compressor.
During Emergency Heat only OFF and HEAT are available. Exiting Emergency Heat is the same as entering. - DRY CONTACT LATCH SCHEME – If Latch OFF is selected, the thermostat runs normally. If Latch ON is selected, the thermostat will ‘wait’ in unoccupied settings. A momentary closure of the dry contact will put the thermostat into the appropriate period, (Morning, Day or Evening)
for 30 minutes.
If the contact closure occurs during Night then the thermostat will remain in Night settings until the Morning period. Then it will return to unoccupied. This is used in a hotel room with a motion detector to allow for comfort settings during sleep periods without movement. - KEYPAD LOCK – To prevent unauthorized use of the thermostat, the front panel buttons may be disabled. To disable, or
‘lock’ the keypad, press and hold in the ON/OFF button. While holding the ON/OFF button, press the WARMER and COOLER buttons together. The Locked icon will appear on the display.
To unlock the keypad, press and hold the
ON/OFF button. While holding the ON/OFF button,
press the WARMER and COOLER buttons together. The Locked icon will disappear from the display. - INTERNAL SETPOINT LIMITING – The display setpoint(s) may be set further than the thermostat’s internal
limits.
For example: Internal setpoint limits set to 77 maximum and 69 minimum:
If the COOLER button is pressed to bring the displayed setpoint down to 35 degrees, internally the thermostat will clamp the Cool setpoint to 69 degrees minimum and not go any lower, but the display would show 35 degrees. - DUAL SETPOINT BEHAVIOR – The adjustable setpoint range is: 35 – 99 degrees Fahrenheit and 7 – 35 degrees Centigrade. When in the modes Heat or Cool, this adjustable range is unhampered.
When adjusting any Auto mode, including programming Occupied and Unoccupied periods, the thermostat will not allow the Heat setpoint to get closer to the Cool setpoint than the value programmed as the minimum difference in step 16, page 16.
When entering the Auto mode from Cool, the Heat and Cool setpoints will remain spread apart by the amount that they were adjusted, prior to entering Auto.
For example: If the Cool setpoint was set to 80 while
in the Cool mode and the Heat setpoint was adjusted to 70 while in the Heat mode, upon entering the Auto mode the Cool and Heat setpoints would be 80 and 70. Both setpoints would then move up and down together, (in this example spread by 10 degrees), by pressing the WARMER or COOLER buttons. To move the Heat and Cool setpoints closer together, enter the Cool or Heat mode by pressing the Mode button, then adjust the setpoint(s) closer together. Heat is limited to how close it can come to Cool by step 16, page 16. - ELECTRIC HEAT – Selecting Electric Heat ON, step 13, page 15, will cause the thermostat to turn on the fan immediately any time there is a heat demand. Since all gas furnaces control the fan, this feature should be off unless the heater is only electric.
- FACTORY DEFAULTS – If, for any reason, it is desirable to return all stored settings back to the factory default settings, press the ON/OFF button. While pressing the ON/OFF button, press the COOLER button for 2 seconds. All icons will appear. Press and hold the FAN button
until Fd appears. This resets all factory settings.
To Calibrate Room Temperature, press the ON/OFF button once more. At this point use the WARMER and COOLER buttons to calibrate room temperature, if needed. Press the ON/OFF button to return to normal operation.
NOTE CAUTION ON PAGE 1.
Warranty
One-Year Warranty – This Product is warranted to be free from defects in material and workmanship. If it appears within one year from the date of original installation, whether or not actual use begins on that date, that the product does not meet this warranty, a new or remanufactured part, at the manufacturer’s sole option to replace any defective part, will be provided without charge for the part itself provided the defective part is returned to the distributor through a qualified servicing dealer.
THIS WARRANTY DOES NOT INCLUDE LABOR OR OTHER COSTS incurred for diagnosing, repairing, removing, installing, shipping, servicing or handling of either defective parts or replacement parts. Such costs may be covered by a separate warranty provided by the installer.
THIS WARRANTY APPLIES ONLY TO PRODUCTS IN THEIR ORIGINAL INSTALLATION LOCATION AND BECOMES VOID UPON REINSTALLATION.
LIMITATIONS OF WARRANTIES – ALL IMPLIED WARRANTIES (INCLUDING IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY) ARE HEREBY LIMITED IN DURATION TO THE PERIOD FOR WHICH THE LIMITED WARRANTY IS GIVEN. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE MAY NOT APPLY TO YOU. THE EXPRESSED WARRANTIES MADE IN THIS WARRANTY ARE EXCLUSIVE AND MAY NOT BE ALTERED, ENLARGED, OR CHANGED BY ANY DISTRIBUTOR, DEALER, OR OTHER PERSON WHATSOEVER.
ALL WORK UNDER THE TERMS OF THIS WARRANTY SHALL BE PERFORMED DURING NORMAL WORKING HOURS. ALL REPLACEMENT PARTS, WHETHER NEW OR REMANUFACTURED, ASSUME AS THEIR WARRANTY PERIOD ONLY THE REMAINING TIME PERIOD OF THIS WARRANTY.
THE MANUFACTURER WILL NOT BE RESPONSIBLE FOR:
- Normal maintenance as outlined in the installation and servicing instructions or owner’s manual, including filter cleaning and/or replacement and lubrication.
- Damage or repairs required as a consequence of faulty installation, misapplication, abuse, improper servicing, unauthorized alteration or improper operation.
- Failure to start due to voltage conditions, blown fuses, open circuit breakers or other damages due to the inadequacy or interruption of electrical service.
- Damage as a result of floods, winds, fires, lightning, accidents, corrosive environments or other conditions beyond the control of the Manufacturer.
- Parts not supplied or designated by the Manufacturer, or damages resulting from their use.
- Manufacturer products installed outside the continental U.S.A., Alaska, Hawaii, and Canada.
- Electricity or fuel costs or increases in electricity or fuel costs for any reason whatsoever including additional or unusual use of supplemental electric heat.
- ANY SPECIAL INDIRECT OR CONSEQUENTIAL PROPERTY OR COMMERCIAL
DAMAGE OF ANY NATURE WHATSOEVER. Some states do not allow the exclusion of incidental or consequential damages, so the above may not apply to you.
This warranty gives you specific legal rights and you may also have other rights which may vary from state to state.
REFERENCE:
Download Manual:
Venstar T0051FS Programmable Thermostat Owner Manual