WT-21 is a thermostat with a wireless radio which controls the setting of Everex Communications, Inc WT-21 Users Manual:
an Air Conditioning/Heating (AC/Heating) unit based on users inputs on a keypad. There is a LCD on the unit to display the current setting to the user. WT-21 operates on two AA alkaline batteries and they can last up to 2 years under normal operation or the unit can be powered from a 24VAC source. There are 6 buttons on the unit and their functions can be programmed to meet a specific requirement. However, the most common functions are namely Off, Cool, Heat, Up Arrow, Down Arrow, Fan. The following are the explanation of these buttons. OFF To turn WT-21 and AC/Heating unit off. COOL To turn on the cooling function on the AC/Heating unit. HEAT To turn on the heating function on the AC/Heating unit. Up Arrow/Down Arrow To increase (Up) or decrease (Down) temperature setting on the AC/Heating unit. FAN To change the speed of the fan to high speed or low speed setting. changes the setting of the AC/Heating unit, WT-21 will update the LCD display to match the setting of the AC/Heating unit. Installation Pull the plastic cover from the base plate. Mount the base plate onto the wall where there is a good circulation of air. Install 2 AA alkaline batteries to the battery clips on the PCB or connect a 24VAC power source wiring to the screw terminal. Press the push button to bind WT-21 radio to a host device. Once they are bound, install the plastic cover back onto the base plate. The LCD displays the current setting of the thermostat. If the user WT-21 Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by on or more of the following measures:
- Reorient or relocate the receiving antenna.
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- Connect the equipment into an outlet on a circuit different from that to which Increase the separation between the equipment and receiver. the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help. Caution: This equipment is authorized for use under the United States Federal Communication Commission Rules and Regulations, Code of Federal Regulations Chapter 47 part 15 and must be installed in accordance with the instructions provided in this document. Failure to install or operate this equipment as instructed in this document could void the users authority to operate the equipment. This equipment contains no user serviceable parts. Any modification or repairs to the internal components or to the antenna configuration of the equipment without the express written consent of Everex Communications, Inc. could void the users authority to operate the equipment. Note: To comply with FCC RF exposure requirements in section 1.1307, a minimum separation distance of 20cm (8 inches) is required between the equipment and all persons. Copyright 2008 Everex Communications, Inc. Everex Communications, Inc. reserves the right to change the content of this users manual without notification