how to Jumper for run FCU

How to jumper for run FCU

To jumper for running a Fan Coil Unit (FCU), you can follow these general steps:

Ensure Safety: Before performing any electrical work, make sure to turn off the power supply to the FCU at the circuit breaker or disconnect switch. This step is crucial to prevent electrical shocks or accidents.

Identify the Control Wiring: Locate the control terminal strip or control board of the FCU. This is where the control wires from the thermostat or building automation system are connected.

Locate the Run Terminal: On the control terminal strip or control board, identify the terminal labeled "Run" or "R" for the fan motor. This terminal is typically used to supply power to the fan motor when the FCU is operational.

Identify the Common Terminal: Locate the terminal labeled "Common" or "C" on the control terminal strip or control board. This terminal is the common connection point for the control circuit.

Connect the Jumper Wire: Take a jumper wire or a short piece of wire and connect one end to the "Run" terminal and the other end to the "Common" terminal. This creates a direct connection between the power source and the fan motor, bypassing any control signals from the thermostat or building automation system.

Secure the Jumper Wire: Ensure that the jumper wire is securely connected to both terminals. You may use appropriate connectors or tighten terminal screws, depending on the type of connection used on the control terminal strip or control board.

Inspect and Test: After connecting the jumper wire, visually inspect the connections to ensure they are secure and free from any exposed wires. Once everything is in order, restore power to the FCU at the circuit breaker or disconnect switch. Test the FCU to verify that the fan motor is running by turning on the system or manually triggering the fan operation.

Remember, this general guide assumes basic knowledge of electrical systems and control wiring. If you are unsure or uncomfortable with electrical work, it is always recommended to consult a qualified HVAC technician or electrician to perform the task safely and correctly.

HVAC Component Right

Here is a list of common HVAC (Heating, Ventilation, and Air Conditioning) equipment:

Furnace: A heating device that burns fuel (such as natural gas, oil, or propane) or uses electricity to generate heat for the building.

Air Conditioner: A cooling system that removes heat from the indoor air and circulates cooled air throughout the building. It typically consists of an outdoor condenser unit and an indoor evaporator unit.

Heat Pump: A device that can both heat and cool a building by transferring heat between the indoor and outdoor environments. It operates similarly to an air conditioner but can also reverse its cycle to provide heating during colder seasons.

Boiler: A heating system that uses water or steam to distribute heat throughout the building. Boilers can be fueled by gas, oil, or electricity.

Air Handler: A unit that circulates and filters air in the HVAC system. It contains a blower, heating and cooling elements, and a filter.

Thermostat: A control device that allows users to set and adjust the temperature in a building. It communicates with the HVAC system to maintain the desired temperature.

Ventilation Fans: Fans or blowers used to bring fresh outdoor air into the building and exhaust stale air. They help improve indoor air quality and remove odors, moisture, and contaminants.

Ductwork: A system of channels or pipes that distribute heated or cooled air throughout the building. It includes supply ducts that deliver conditioned air and return ducts that bring back the air for reconditioning.

Humidifier: A device that adds moisture to the air to prevent dryness, particularly during the winter when the heating system can dry out the indoor air.

Air Purifier: A system that removes pollutants, allergens, and contaminants from the air, enhancing indoor air quality.

VAV Boxes: Variable Air Volume (VAV) boxes control the airflow in different zones of a building. They regulate the amount of air entering a space to maintain the desired temperature.

Exhaust Fans: Fans used to remove stale air, smoke, and odors from specific areas like kitchens, bathrooms, or industrial spaces.

Dampers: Devices that regulate or control airflow in ducts by opening or closing to redirect air or adjust the pressure in specific areas.

Condensing Unit: The outdoor component of an air conditioning or heat pump system that releases heat from the refrigerant.

Evaporator Coil: The indoor component of an air conditioning or heat pump system that absorbs heat from the indoor air and cools it.

Please note that this is not an exhaustive list, and there are various other specialized HVAC equipment and components used in different applications and systems.