Install Instructions

General Information – All Models

Before installation, read the following instructions carefully. Closely following these instructions will eliminate

potential operating problems, assuring years of trouble-free service.

Risk of electric shock. The pump is supplied with a grounding conductor and grounding-

type attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly

grounded, grounding-type receptacle. Always disconnect the pump from the power source before handling

or making adjustments. Always wear rubber boots when servicing in wet areas. Make sure the pump

power source is a separately fused, grounded 3-wire type receptacle of 15-amp capacity. DO NOT

REMOVE GROUND PRONG OR PLUG. DO NOT USE AN EXTENSION CORD. Check to make sure

installation is in accordance with the National Electric Code and all applicable local codes. Installation and

servicing are to be conducted by qualified personnel.

DO NOT pump flammable liquids

DO NOT use around explosive materials

DO NOT handle unit with wet hands or while standing in water

DO NOT connect to any voltage other than that listed on the nameplate

DO NOT use in water over 150°F.

DO NOT modify the pump in any way

DO NOT expose pump or discharge to freezing temperatures

Installation of the Pump

A. Select a location that is level and below the condensate pan drain. The unit may be mounted on a wall by

using the mounting tabs on the tank, which are 10-9/16” apart. A condensate neutralizer may be required

by some codes to keep condensate pH in an acceptable range for discharge into drains.

B. Connect the drain pan to one of the 3 intake holes. Use vinyl tubing, PVC, or any other suitable material.

Be sure the tubing or pipe extends into the inlet of the tank by at least 1". The discharge connection to the

check valve may be made with 3/8” vinyl tubing secured by a hose clamp (not included), or the barb may

be removed by sawing so that threaded fittings may be attached. The thread is ¼” NPT. Connect the pipe

or the discharge hose to the discharge of the pump. HAND-TIGHTEN ONLY. Over-tightening may cause

the pump housing to crack. Once the discharge tubing has been extended to the required height it should

be slanted downward, if possible, to assist in drainage.

NOTE: For best results, do not extend

discharge tubing beyond 12' vertically for the LCU-15 and 17' for the LCU-20S, LCU220S,

or LCU-SP20S (Refer to performance chart).

C. The safety switch leads (all Models except LCU-15) should be connected to a class 2 low voltage circuit

(not to exceed 30 volts). Using this feature may prevent damage from condensation overflowing if the

discharge becomes blocked or if the pump fails. The leads may be connected in series with the low voltage

thermostat circuit so as to shut down the heating/air-conditioning system if the water level in the pump tank

rises beyond normal, or they may be connected to an external alarm.

D. To provide maximum mounting positions the tank cover may be removed and rotated 180° so that the

check valve will be on the opposite side of the unit. To remove the lid from the tank, insert a screwdriver in

the slot and pry the tank outward, while lifting the lid. After removing and rotating, be sure the lid snaps

back into place firmly.

7196000C