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Savings Estimators. Find a Distributor. Non-Standard Returns. Output Relay Draw: See Table 1. Default Settings: See Table 2. Loss of Power: Thermostat maintains programmed times and temperatures for product life. Clock and day information is retained for two hours.
Minimum On Heat and Cool : Factory setting 2 minutes; adjustable 0 to 2 minutes. QH Subbase mounts horizontally on a wall or outlet box. Dimensions: See Fig. See Fig.
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Enter a new password. TF Series. Table 1. Maximum Amperes at 30 Vac. Relay Running Inrush Fan 0. See Table 7 for DIP switch settings.
The thermostat DIP switches are located on the back of the thermostat. Set the DIP switches for the desired thermostat features and the system being controlled. NOTE: This operation must be done prior to installing the batteries. If batteries are installed prior to this operation, remove battery for 15 minutes and begin. This changes the thermostat to the heat pump algorithm. If you wish to change the control of the thermostat because a new subbase has been purchased, remove battery for 15 minutes, change mini-jumper position, and re-install battery.
Always disconnect power supply and remove battery from the T before connecting the ribbon cables to prevent electrical shock and equipment damage. Check that the 24 Vac power supply is disconnected from the Q Check that the 9 Vdc battery is not installed in the T Connect the 12 pin larger ribbon cable to the Q Connect the 9 pin smaller ribbon cable to the Q If using a 9 Vdc battery, go to the Install Battery Backup section for installation instructions. The 9 volt battery is not necessary for the operation of the thermostat, but holds the program during power outages.
When the power is restored, the system will resume normal operation. Without the battery, the system will follow the default setpoints. See Table 3. Use the following steps to install a battery:. Locate the battery holder on the back of the thermo-. Slide the battery up to the connector until it is firmly seated. NOTE: Observe the polarity when snapping a 9 volt alkaline battery into the holder.
NOTE: The plugs must be firmly seated on the connectors for the thermostat to work properly. Hang the top edge of the thermostat on the subbase hooks. Swing down and press on the lower edge until the thermostat snaps in place.
Insert and tighten three Allen head screws on the bottom of the thermostat. The keyboard is located behind the thermostat flip-up cover. There are 16 keys to set, review and modify programmed times and temperatures.
The liquid crystal display LCD shows day, time or temperature and which programming period is operating. The thermostat can be set for two occupied and two unoccupied time and temperatures for each day of the week 28 independent settings. The two override keys provide quick temporary programming changes for increased occupant comfort. Set the current day by pressing and releasing the DAY key once.
To avoid the unnecessary occupied period following initial programming, set a AM unoccupied start time on the thermostat when programmed. NOTE: The programming times are in intervals of ten minutes; i.
The display shows the abbreviation for a day. To program a second occupied start time for the selected day, repeat Step 3 until four dashes are displayed or the second start time if previously programmed is displayed.
Then repeat Step 4. To program a second unoccupied start time for the selected day, repeat Step 5 until four dashes are displayed or the second start time if previously programmed is displayed. Then repeat Step 6. Press the COPY key. NOTE: The day to be copied from will remain on the display. Press the COPY key a second time to perform the. Repeat Steps 3 to 5 to copy to another day. Repeat Steps 1 and 2 until all four temperatures are set.
The LCD can show time or temperature. There are three overrides available. The 3 hour occupied overrides can be initiated from a remote location or the thermostat. Use the following steps to check or change the value:.
The LCD will show a number from 0 to 5. Pressing the. The LCD will not reflect the key value. This override is used when the area will be closed for a temporary closing such as a long holiday. Check that all wiring is correctly completed and all sensors are installed. The thermostat should be mounted on the wallplate or subbase.
If the thermostat has not been programmed, when the power is first turned on, the LCD will show four dashes Refer to the Programming section to set a program. If the display does not change or is blank, refer to the Troubleshooting section. The thermostat has a test mode that aids the installer in performing the checkout.
The test mode overrides the minimum on and off times so the checkout can be quickly performed. All the display segments will appear. Do not use the test mode for longer than 10 minutes. The test mode overrides the minimum on and off times that protect the system. Equipment damage can result if the thermostat remains in the test mode. The Test Mode Indicators will no longer show on the screen. This starts the test mode. The heating should start both stages if multistage , and the fan should run may be a short delay on forced air systems.
When the thermostat has a system switch, move the switch to the HEAT position and repeat steps 3 through 6. Refer to the manufacturer. NOTE: When cooling setting changes, thermostat will wait up to five minutes before turning on the cooling equipment. This delay is to protect the compressor. The cooling should start both stages if multistage , and the fan should run. The cooling and fan should shut off. When the thermostat has a system switch, move the switch to the COOL position and repeat Steps 1 through 4.
Move the system switch to the OFF position. All heating.
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