Robertshaw 803A Line Voltage Thermostat (Cooling) Instruction Manual

1. Introducció

The Robertshaw 803A is a mercury-free line voltage thermostat designed specifically for cooling applications with an SPST (Single-Pole, Single-Throw) switch action. This thermostat incorporates bimetal temperature sensing technology to deliver enhanced thermal performance and accurate low voltage control. It is engineered for straightforward operation and reliable temperature management.

2. Informació de seguretat

• Always disconnect power to the thermostat and HVAC system at the main service panel before installation, maintenance, or removal.
• La instal·lació l'ha de dur a terme un electricista qualificat d'acord amb totes les normes elèctriques locals i nacionals.
• Do not use this thermostat for heating applications. It is designed for cooling only.
• Assegureu-vos que totes les connexions del cablejat estiguin ben fixades i degudament aïllades per evitar riscos elèctrics.
• Aquest dispositiu funciona en línia voltage (120V/277V). Improper installation can result in electric shock or fire.

3. Producte acabatview

The Robertshaw 803A thermostat offers a range of features designed for efficient and reliable cooling control:

• Disseny sense mercuri: Environmentally friendly, requiring no special disposal procedures.
• Bimetal Temperature Sensing: Provides improved thermal performance and precise temperature control.
• Rang de control de temperatura: Ajustable d'10 °C a 32 °C (50 °F a 90 °F).
• Positive-Off Switch: Ensures assured shutdown of the HVAC system when set to the 'Off' position.
• J-Box Compatible: Designed for easy installation and compliance with electrical codes.
• Substitució universal: Can retrofit most existing electric heat thermostats (when used for cooling applications).

Figura 1: Frontal view of the Robertshaw 803A Line Voltage Thermostat. This image shows the white thermostat with a clear temperature dial ranging from 50 to 90 degrees Fahrenheit, and the Robertshaw logo at the top.

4. Configuració i instal·lació

Proper installation is crucial for the safe and efficient operation of your Robertshaw 803A thermostat. Always ensure power is disconnected before beginning any wiring.

4.1 Esquema de cablejat

Figura 2: Esquena view of the Robertshaw 803A thermostat. This image displays the metal mounting plate and the red and black wires extending from the unit, ready for connection.

4.2 Passos d'instal·lació

1. Desconnecteu l'alimentació: Turn off the power to the cooling system at the main circuit breaker. Verify power is off using a voltage provador.
2. Elimina el termòstat antic: Carefully remove the old thermostat from the wall. Note the wiring connections before disconnecting.
3. Muntatge: The 803A is J-Box compatible. Secure the thermostat's mounting bracket to the electrical box using appropriate screws.
4. Cablejat: Connecteu la línia voltage wires from your cooling system to the appropriate terminals on the Robertshaw 803A thermostat. This is an SPST (Single-Pole, Single-Throw) thermostat for cooling applications. Refer to local electrical codes and the detailed wiring instructions provided with the product.
5. Termòstat segur: Once wired, carefully push excess wires back into the electrical box and secure the thermostat to the mounting bracket.
6. Restaura l'alimentació: Torneu a connectar l'alimentació a l'interruptor principal.

Figura 3: lateral view of the Robertshaw 803A thermostat. This image shows the depth of the thermostat and its metal mounting plate, highlighting its design for flush installation against a wall.

5. Instruccions de funcionament

The Robertshaw 803A thermostat is designed for simple and intuitive operation.

1. Ajust de temperatura: Rotate the dial on the front of the thermostat to select your desired cooling temperature. The temperature range is 50°F to 90°F (10°C to 32°C).
2. Positive-Off Switch: To completely shut down the cooling system, turn the dial to the 'Off' position. This ensures the system remains off until manually reactivated.
3. Visualització de la temperatura: The thermostat features a convenient temperature display, allowing you to view the current comfort level at a glance.

6. Manteniment

The Robertshaw 803A thermostat requires minimal maintenance to ensure continued optimal performance.

• Neteja: Netegeu periòdicament l'exterior del termòstat amb un drap suau i sec.amp tela. No utilitzeu netejadors abrasius ni dissolvents.
• Flux d'aire: Ensure that the thermostat's vents are not obstructed by dust or debris, as this can affect temperature sensing accuracy.
• Sense peces reparables per l'usuari: The internal components of the thermostat are not user-serviceable. Do not attempt to open or repair the unit.

7. Solució De Problemes

If you experience issues with your Robertshaw 803A thermostat, consider the following common troubleshooting steps:

• No Power/System Not Responding:
  • Check the circuit breaker for your cooling system and ensure it is in the 'On' position.
  • Verify that the thermostat dial is not set to the 'Off' position.
  • Ensure all wiring connections are secure. If unsure, consult a qualified electrician.
• Incorrect Temperature Reading/System Not Cooling Properly:
  • Ensure the thermostat is not exposed to direct sunlight, drafts, or heat sources, which can affect its accuracy.
  • Confirm the thermostat is set to a temperature lower than the current room temperature for cooling to activate.
  • Netegeu la pols o les restes de les reixetes de ventilació del termòstat.
• Thermostat Mislabeled (Heating vs. Cooling):
  • The Robertshaw 803A is specifically designed for cooling applications. If you require a thermostat for heating, ensure you have the correct model.

If problems persist after attempting these steps, contact a qualified HVAC technician or Robertshaw customer support for assistance.

8. Especificacions

9. Garantia i Suport

The Robertshaw 803A Line Voltage Thermostat typically comes with a Garantia limitada d'1 anyConsulteu la targeta de garantia inclosa amb el producte per conèixer els termes i condicions específics.

For technical support, troubleshooting assistance, or warranty claims, please contact Robertshaw customer service. Contact information can usually be found on the product packaging or the official Robertshaw weblloc.