Liberty Pumps LCU-PR20S User manual

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Plenum-Rated
Condensate Pump
Installation
2235000A
Models
LCU-PR20S
LCU-PR220S

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Introduction
Safety Information
Please read, understand, and follow all safety instructions. Failure to follow
instructions may result in property damage, serious injury, or death.
DANGER
Always disconnect power prior to moving, adjusting, or servicing pump or attached
systems. DO NOT use this pump in the presence of spraying or standing water.
Failure to do so could result in a fatal electric shock.
WARNING: Fire and Explosion Hazard
DO NOT use this pump to move flammable or explosive liquids. DO NOT use this
pump in explosive or flammable environments.
Ensure that pump is mounted away from heat exchanger or wiring. If you are unsure
of any items in this manual, please consult a professional and DO NOT attempt to
install this product.
CAUTION: Flood Risk
Personal injury or property damage can result from an inoperative pump. If a flood
has occurred, DO NOT walk in wet area until all power has been turned off. Check
with local electric company or a qualified electrician before disconnecting any
electrical service prior to pump removal.
WARNING
Pump must be properly wired to condensate producing appliance control board in
order to shut off appliance in alarm (high water) conditions.
Supply voltage and frequency must match what is shown on pump nameplate.
Source voltages lower than the rated supply can reduce performance and cause
pump to overheat.
Pump must be level and should be mounted to, or placed on, a solid surface or
floor.
DO NOT cover pump air vents. Pump is air cooled. DO NOT cover vent holes
located on top or sides of the pump housing. Pump may be operated continuously
as long as air vents are not covered.
Pump should be installed indoors. The chosen location should be clean and dry.
This pump is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction concerning use of the pump
by a person responsible for their safety. Children should be supervised to ensure that
they do not play with the pump.
Temperature Rating (not tested for hot water)
• Continuous duty 140˚F
• Max inlet temperature 160˚F
• Not suitable for contact with steam or gases that exceed 160˚F
This pump should be installed by HVAC/R trained service professionals.

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General Information
This pump is designed to automatically remove condensate water that collects
from appliances such as air conditioners and dehumidifiers. The pump has a
built‑in tank that collects water from the appliance. When collected water
reaches sufficient level inside the pump tank, the unit switches on and pumps
water to a remote location for removal.
When the tank is sufficiently empty, the pump automatically switches off. Pump
is capable of lifting water up to 22 ft and is equipped with a check valve that
prevents water from flowing back into the tank when the pump shuts off.
The pump is outfitted with LED indicators that show the status of power
available, motor running, and high water (alarm) conditions. The pump is also
equipped with a switch that activates when water in the tank reaches an
overflow condition. The overflow safety switch may be connected to turn off
the appliance if high water conditions occur.

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LCU-PR20S LCU-PR220S
Rated Voltage 120 Volts/60 Hz 230 Volts/60 Hz
Rated Current Draw 1.9 Amps 1.0 Amps
Head Height 22 ft maximum 22 ft maximum
Flow Rate at Zero Head 1.6 GPM 1.0 GPM
Product Weight 4.7 lbs 4.7 lbs
Inlet Height from Base 1.75” 1.75”
Specifications
Features
Metal Hang Tabs
LED Indicator Lights
Inlet Hole
Inlet Hole Cover Rubber Feet
Check Valve
A
B
PART DESCRIPTION QUANTITY
A Condensate Pump 1
B Inlet Hole Covers 3
Package Contents

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1a. Place on Floor
Determine condensate pump location. Pump must be level and should
be mounted to, or placed on, a solid surface or floor away from moving
objects and extreme heat.
Mounting Options
1a
Installation