VCCA-20ULS - Water pump Little Giant - Free user manual and instructions

Product Type	Condensate Pump
Brand	Little Giant
Model	VCCA-20ULS
Supply Voltage	115 V / 60 Hz (230 V / 50-60 Hz version available)
Power Consumption	93 W (115 V) / 75 W (230 V)
Rated Current	1.5 A (115 V) / 0.6-0.5 A (230 V)
Maximum Discharge Head	6.1 m (20 ft) for 115 V ; 5.2 m (17 ft) for 230 V
Control	Automatic float switch
Safety Switch	High water level switch (Class 2 low voltage, NO/NC terminals)
Use	Evacuation of condensate from air conditioners, condensing furnaces, etc.
Tank Material	Plastic
Discharge Connection	Barbed adapter 3/8 in (9.5 mm) with check valve
Inlet Connection	Inlet ports with removable plugs
Electrical Protection	Ground fault circuit interrupter (GFCI) recommended, grounded
Protection Class	Indoor use only
Warranty	12 months limited
Maintenance	Cleaning and inspection every 6 months
Replacement Parts (Examples)	Check valve barbed adapter set 1/4 in (305627001) and 3/8 in (305627002)

Frequently Asked Questions - VCCA-20ULS Little Giant

What should I do if the pump does not start when the tank is full?

First, check that the pump is properly connected to the power supply and that the circuit breaker is not tripped. If the power supply is normal, clean the float and ensure it moves freely. If the problem persists, the switch or motor may be defective; in that case, replace the pump.

How to clean the pump and how often?

Maintenance should be performed every 6 months (more often in heavy use). Disconnect the power, remove the tank cover, clean the tank with warm soapy water, rinse, check the movement of the floats, and clean the check valve. Also inspect the suction and discharge pipes.

How to connect the high water level switch?

The switch can be wired in two ways: as NO (normally open) terminals to stop the air conditioning in case of high water level, or as NC (normally closed) terminals to activate an external alarm. Follow the instructions in the manual to change the configuration, and connect the black wires of the switch to a Class 2 low-voltage circuit.

Can I use the pump for liquids other than water?

No, the pump is designed only for water (condensate). Do not use with flammable, combustible, or explosive liquids such as gasoline, oil, or kerosene. Using with incompatible liquids may cause electrical failure and shock hazards.

What is the maximum discharge head?

For the 115 V version, the maximum head is 6.1 m (20 ft). For the 230 V version, it is 5.2 m (17 ft). Do not exceed 75% of the specified hydraulic capacity.

What to do in case of tank overflow?

First, check that the pump is plugged in and that the circuit breaker is on. Ensure the pump is level and the float is not obstructed. If the water inflow exceeds capacity, a more powerful model may be needed. The high water level switch should normally cut the air conditioning or trigger an alarm.

How to properly install the discharge tubing?

Use a tube with a maximum inner diameter of 3/8 in (9.5 mm) secured with a self-locking clamp. Route the tubing upward, then create an inverted U-trap above the pump, sloping slightly downward to a low point to create a siphon effect. Do not exceed the maximum discharge head.

What are the safety risks to be aware of?

Risk of electrocution and fire. Always disconnect the power before servicing. Use a circuit with a ground fault circuit interrupter (GFCI) if required. Do not handle the pump with wet hands. Do not lift the pump by the cord. Do not use outdoors or in an explosive atmosphere.

How to test the pump operation?

Power on the pump. Gently lift the external test lever to start the motor, then release it. To test the high level switch, remove the tank cover and lift the corresponding float: depending on the wiring, the air conditioning should stop or the alarm should sound.

Where to find replacement parts?

The replacement parts listed in the manual include, for example, the check valve barbed adapter set 1/4 in (ref. 305627001) and 3/8 in (ref. 305627002). Contact your dealer or visit www.LittleGiant.com to order them.

USER MANUAL VCCA-20ULS Little Giant

VCCA-20ULS Condensate Pump Series

This condensate pump automatically removes condensate water that drips from an air conditioner evaporator coil, refrigeration equipment coil, condensing furnace, or condensing boiler. The pump is controlled by a float switch mechanism, which automatically starts and stops the pump.

All models also include a high water level switch, which opens a thermostat circuit when the pump reservoir is full, stopping production of condensate. Alternatively, this switch can be reconfigured to close a circuit, which can operate an external alarm or relay, (purchased separately).

White plastic electrical outlet with ventilation slots and mounting base (no text or symbols visible)

This product is covered by a Limited Warranty for a period of

12 months from the date of original purchase by the consumer. For complete warranty information, refer to www.LittleGiant.com

Specifications

Model Volts	HZ Amps	Watts	Shut	Off
VCCA-20ULS	115 60	1.5	93 20'	(6.1 m)
	230 50/60		0.6/0.5	75 17'	(5.2 m)

SAFETY INSTRUCTIONS

This equipment should be installed and serviced by technically qualified personnel who are familiar with the correct selection and use of appropriate tools, equipment, and procedures. Failure to comply with national and local electrical and plumbing codes and within Little Giant recommendations may result in electrical shock or fire hazard, unsatisfactory performance, or equipment failure.

Know the product's application, limitations, and potential hazards. Read and follow instructions carefully to avoid injury and property damage. Do not disassemble or repair unit unless described in this manual.

Refer to product data plate(s) for additional precautions, operating instructions and specifications.

Failure to follow installation or operation procedures and all applicable codes may result in the following hazards:

DANGER

Risk of death, personal injury, or property damage due to explosion, fire, or electric shock.

• Do not use to pump flammable, combustible, or explosive fluids such as gasoline, fuel oil, kerosene, etc.
• Do not use in explosive atmospheres or hazardous locations as classified by the NEC, ANSI/NFPA70.
• Do not handle a pump or pump motor with wet hands or when standing on a wet or damp surface, or in water.
• When a pump is in its application, do not touch the motor, pipes, or water until the unit is unplugged or electrically disconnected.
• If the power disconnect is out of sight, lock it in the open position and tag it to prevent unexpected application of power.

WARNING

Risk of severe injury or death by electrical shock.

• To reduce risk of electrical shock, disconnect power before working on or around the system.
- Wire pump system for correct voltage.
- Be certain that this pump is connected to a circuit equipped with a ground fault circuit interrupter (GFCI) device if required by code.
- Check electrical outlets with a circuit analyzer to ensure power, neutral, and ground wires are properly connected.

- Some pumps are supplied with a grounding conductor and grounding-type attachment plug. To reduce risk of electric shock, be certain that it is connected only to a properly grounded grounding-type receptacle. Do not remove the third prong from the plug. The third prong is to ground the pump to help prevent possible electric shock hazard.

- Some pumps are supplied with lead wires and are intended to be hardwired using a junction box or other approved enclosure. The pumps include a grounding connector. To reduce risk of electric shock, be certain that it is properly connected to ground.

- In a 230 V direct wire installation, one side of the line going to the pump is always electrically energized, regardless of whether the liquid level control switch is open or closed. To avoid hazards when installing or servicing, install a double-pole disconnect near the pump installation.

- The flexible jacketed cord assembly mounted to the pump must not be modified in any way, with the exception of shortening the cord to fit into a control panel. Any splice between the pump and the control panel must be made within a junction box and comply with the National Electrical Code.

- Check local electrical and building codes before installation. The installation must be in accordance with their regulations as well as the most recent National Electrical Code (NEC) and the Occupational Safety and Health Act (OSHA).

- Do not use the power cord for lifting the pump.

- Do not use an extension cord.

- The pump should only be used with liquids compatible with pump component materials. If the pump is used with liquids incompatible with the pump components, the liquid can cause failure to the electrical insulation system resulting in electrical shock.

CAUTION

Risk of bodily injury, electric shock, or equipment damage.

• This equipment must not be used by children or persons with reduced physical, sensory or mental abilities, or lacking in experience and expertise, unless supervised or instructed. Children may not use the equipment, nor may they play with the unit or in the immediate vicinity.
• Equipment can start automatically. Lockout-Tagout before servicing equipment.
• An inoperative or malfunctioning pump could lead to flooding, resulting in personal injury or property damage.
• The pump has been evaluated for use with water only. Pump should only be used with liquids compatible with pump component materials. If the pump is used with liquids incompatible with the pump components, the liquid can cause failure to the electrical insulation system resulting in electrical shock.
• Operation of this equipment requires detailed installation and operation instructions provided in this manual. Read entire manual before starting installation and operation. End User should receive and retain manual for future use.

NOTICE

Risk of damage to pump or other equipment.

• Before installing pump, allow air conditioner to cycle several times, collecting condensate in a separate container to help flush any residual oils that may remain in the system. Failure to flush the system can result in damage to the pump and drain line plumbing components.
• When operating in a gas furnace environment, care must be taken to ensure acidity of condensate does not fall below the average pH of 3.4 (to prevent a localized pocket of acid that acts like a battery causing pitting) by routinely cleaning or flushing tank with fresh water.
• Support pump and piping when assembling and when installed. Failure to do so may cause piping to break, pump to fail, motor bearing failures, etc.
• Do not install the pump in a manner that will subject it to splashing or spraying.
• Periodically inspect pump and system components. Regularly check hoses for weakness or wear, making certain that all connections are secure.
• Schedule and perform routine maintenance as required and in accordance with the Maintenance section of this manual.
• Pump is for indoor use only.
• Do not use this pump inside an air plenum.

INSTALLATION

Physical Installation

• Install the pump on a flat surface.
- Make sure the mounting surface will support the combined weight of the pump and water filled tank.
- The air vent openings around the motor housing must not be blocked or obstructed to allow the free flow of air.
- Ensure that the pump is level and the inlet is below the coil drain.

Piping Connections

1. Cut end of pipe(s) from evaporator or furnace drain at a 45° angle to prevent pipe(s) from sealing closed against the tank's floor.
2. Route drain pipe downward into pump inlet opening.

- To open one of the closed inlets, insert a screw driver into the slot and twist to remove. Be sure the knockout plug does not fall into the tank.

Technical diagram of an electronic component with numbered parts labeled 1 through 6

1. Install outlet tubing or piping onto outlet check valve.

NOTE: When verifying installation, keep in mind a click will be heard when the check valve is securely locked.

• With the factory installed 3/8" hose barb, use 3/8" inside diameter maximum tubing or piping to prevent excessive backflow to unit and secure with cable-tie (not provided).

• Ensure the outlet tube/check valve adapter is locked into place by verifying the adapter is rotated clockwise as far as possible and the tab on the adapter is aligned with the closed lock symbol.

• Route outlet tubing straight up, not exceeding 75% of total dynamic head capacity of the pump.

• At the top, make an inverted "U" trap directly above the pump at the highest point.
• Slope discharge line down slightly to a point above the drain area. Then, turn down and route to a suitable drain at a point below or approximately level with the bottom of the pump, if possible. This will produce a siphoning effect which will improve efficiency of the pump.

Electrical Connections

Connect the power cord to a constant source of power matching the pump nameplate voltage.

• The pump should be connected or wired to its own circuit, with no other electric receptacles or equipment in the circuit. Do not connect to a fan or any device that runs intermittently.
• The fuses or circuit breaker should be of ample capacity.
• Connect to a circuit equipped with a ground fault circuit interrupter (GFCI) if required by code.

IMPORTANT: If the power cord is damaged, the whole unit must be replaced.

High Water Level Switch Connection

CAUTION

Risk of bodily injury or property damage.

• In applications where property damage and/or personal injury might result from an inoperative or leaking pump due to power outages, discharge line blockage, or any other reason, a backup system(s) (e.g. auxiliary switch) and/or alarm should be used and monitored.
• This pump is equipped with a safety switch. Connect to a Class 2 Low Voltage circuit only. The two switch wires are black. Do not confuse these wires with the line voltage power conductors.
• The high water level safety switch is placed in an orientation that reverses the normal function of normally open and normally closed terminals. Pay close attention to the following instructions.

Technical diagram showing component connections and wiring for a device, including labeled parts and color-coded wires.

1. High Water Level Switch
2. NC terminal. Connect here to activate an external alarm or relay.
3. NO terminal. Connect here to shut off the condensing unit of the heating/cooling system.
4. Motor Cover and Screw
5. Thermostat
6. Air Conditioner/Furnace
7. High Water Level Switch wiring leads

There are two options for connecting the high water level switch:

1. The switch is factory wired to the NO and COM terminals. This will open (break) a low voltage electrical circuit when the switch is activated by a high water level in the reservoir. This can be used to stop the condensing unit(s) of the heating/cooling system.

- Refer to the thermostat and heating/cooling unit's Operating Manual for expected switch operation and wiring connections. Connect the switch leads (7) in series with the thermostat circuit as specified in the manual.

1. The switch can be reconfigured to the NC terminal to close a low voltage circuit in the event of high water level, activating an external alarm or relay (purchased separately). Use the following procedure if an NC configuration is required:

2. Disconnect the pump from the power source.

3. Remove the pump's motor cover (4).
4. Support the switch and carefully change the lead from the NO terminal to the NC terminal (3).
5. Re-install the motor cover.
6. Connect the switch leads in series with the low voltage external component as specified in the component's manual.

Place the included "Attention Service Technician" label in a visible location.

Operation Testing

1. Turn on power to the pump.
2. Test pump operating switch by gently lifting the external test/run lever to start the motor.

- Ensure the test lever has returned to its resting position after testing.

- If the pump is located against the furnace or other vertical surface on the test switch side,

Technical diagram of a mechanical assembly with numbered components labeled 2 and 4

also verify the test lever is not hung up on the vertical surface preventing the pump from turning off.

1. Disconnect the pump from the power source.

2. Test the high water level safety switch:

3. Remove the four tank cover screws to lift the cover from the tank.

4. Raise the high water level switch float.
5. The switch should activate before the float contacts the tank cover.
6. If wired to NO terminal, air handling device should shut down when float is raised.
7. If wired to NC terminal, external component (alarm or relay) should activate when float is raised.

MAINTENANCE

CAUTION

Risk of bodily injury or property damage.

• Do not allow the tank to overflow during this maintenance.
• Inspect and test the condensate removal system condition and operation every 6 months (more frequently in heavy-use applications).

To inspect and clean the tank and other components, follow these steps:

1. Disconnect the pump from the power source.

2. Remove tank cover assembly from the tank.

3. Remove four screws that secure the cover assembly.

4. Carefully lift the cover assembly from the tank and hold level.

5. Be sure the floats move freely. Clean as necessary.

Technical diagram of a mechanical assembly with numbered components labeled 3 and 4

1. Twist to unlock and remove the check valve and backwash the discharge port into the volute. Do this over a sink.

- Be sure check valve locks into place with an audible click when reinstalling.

1. Clean the tank with warm water and mild soap.
2. Flush tank with fresh water. This helps to ensure that residual condensate does not create localized pockets of acid that could cause pitting.
3. Check inlet and outlet piping. Clean as necessary. Be sure there are no kinks in the line that would inhibit flow.
4. Replace the tank cover assembly.
5. Test operation of the system.

Troubleshooting

Pump does not start when tank is full of condensate water.	Pump is not connected to electrical power.Circuit breaker off or fuse removed.Accumulation of debris or build-up on float.Float movement obstruction.Defective switch. Replace pump.Defective motor. Replace pump.Pump is not connected to electrical power.	Connect pump to a dedicated GFCI circuit.Turn on circuit breaker or replace fuse.Clean float; a dirty float could be too heavy to operate correctly.Remove the tank. Check float movement path. Remove any debris or obstruction.
		Larger pump required.The high level switch should shut off the A/C unit or signal an alarm in this condition if connected in the circuit correctly. Check to ensure that the pump high level switch is connected to the A/C unit (or alarm circuit), and that the leads are connected to the correct switch terminals for the application. Refer to “High Water Level Switch Connection” on page 4.
	Liquid inflow matches or exceeds pump output capacity.	Check to ensure that the pump is level. If the pump is not level, it may not activate, causing water to overflow from the tank. Place unit on a flat and level surface.

Replacement Parts

Part Number Description

305627001 1/4" Hose Barb Check Valve Assembly

305627002 3/8" Hose Barb Check Valve Assembly

VCCA-20ULS bomba de condensado

White plastic electrical outlet with ventilation slots and mounting base (no text or symbols visible)

Technical diagram of an electronic component with numbered parts labeled 1 through 6

Technical diagram showing labeled components of an electronic device with numbered parts and wiring connections

Technical diagram of a mechanical assembly with numbered components labeled 2 and 4

Technical diagram of a mechanical assembly with numbered components labeled 3 and 4

White plastic electrical outlet with ventilation slots and mounting base (no text or symbols visible)

Technical diagram of an electronic component with numbered parts labeled 1 through 6

Technical diagram showing electrical components and wiring connections with labeled parts 1 through 7

Technical diagram of a mechanical assembly with numbered components labeled 3 and 4