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INTRODUCTION

Before proceeding with the installation or operation of the 
Little Giant Condalert™, read all instructions thoroughly, as 
well as complying with all Federal, State and Local Codes, 
Regulations and Practices. The Condalert™ must be installed 
by qualified personnel familiar with all applicable local electrical 
and mechanical codes.

The Little Giant Condalert™ is designed for the air handling industry 
to detect condensate drain overflow water in the secondary/aux-
iliary  drain system and shut down the condensing unit so the 
cooling coil will not produce more condensate water. When the 
Condalert™  detects water, in the secondary drain system, the 
Condalert™ will activate its visual red LED and audible buzzer 
(Model LC-110), while at the same time shutting down the con-
densing unit to prevent condensate water accumulations. When 
the probes are dried, the Condalert™ will automatically reset the 
system to normal operation. 
The solid state circuitry is encapsulated in epoxy, making the 
unit waterproof and tamperproof. The probes are stainless steel 
and will not rust. More than one Condalert™ may be installed 
on a troublesome unit to provide complete area protection. The 
Condalert™ may be connected to a monitoring unit or a remote 
alarm.

The Condalert™ must be installed in a 24 Volt AC Class 2 control 
circuit. Make electrical connections between the air handler 
and the condensing unit control for proper operation.

SPECIFICATIONS

Voltage:

 

24 VAC, (Class 2 Control Circuit)

Switching Current:

 

1.0 Amp, 24VAC Max.

Operating Current:

 

49 mA (alarm/shutdown with buzzer)

 

30 mA (alarm/shutdown without buzzer)

Cable Length:

 10'

LC-110 

(LED and buzzer)

LC-210

(LED only)

Figure 1

Figure 2

SAFETY GUIDELINES

 1. DO NOT USE WITH FLAMMABLE OR EXPLOSIVE FLUIDS 

SUCH AS GASOLINE, FUEL OIL, KEROSENE, ETC. DO NOT 
USE IN EXPLOSIVE ATMOSPHERES. SWITCH SHOULD 
ONLY BE USED WITH WATER.

 2. DO NOT HANDLE SWITCH WITH WET HANDS OR WHEN 

STANDING ON A WET OR DAMP SURFACE, OR IN WATER.

 3. DISCONNECT ALL ELECTRICAL SERVICE TO THE SWITCH 

BEFORE WORKING ON OR HANDLING THE UNIT.

  4. DO NOT CONNECT TO VOLTAGE ABOVE 24VAC MAXIMUM 

OR AMPERAGE ABOVE 1.0 AMP.

  5. DO NOT OPERATE UNLESS COMPLETELY ASSEMBLED.
  6.  IN ANY INSTALLATION WHERE PROPERTY DAMAGE AND/OR 

PERSONAL INJURY MIGHT RESULT FROM AN INOPERATIVE 
SWITCH DUE TO POWER OUTAGES, OR ANY OTHER REASON, 
A BACKUP SYSTEM(S) AND/OR ALARM SHOULD BE USED.

 7. DO NOT MODIFY, CUT, SAW, SAND OR GRIND ANY PART 

OF THE CONDALERT. DOING SO MAY CAUSE HARMFUL 
EMISSIONS.

CONNECT THE CONDALERT BETWEEN THE LOW VOLTAGE 
(24 VAC) HVAC CONTROLS AND THE CONDENSING UNIT 
CONTROL CIRCUIT.
IF THE CONDALERT GOES INTO ALARM CONDITION DUE TO 
WATER DETECTION, THE RED LED AND ALARM BUZZER (ON 
MODELS WITH BUZZER) WILL ACTIVATE. AT THE SAME TIME 
THE COMPRESSOR/CONDENSOR UNIT WILL SHUT DOWN. THE 
AIR HANDLER FAN WILL STILL OPERATE TO PROVIDE AIR 
CIRCULATION IF INSTALLED PROPERLY.
IF THE CONDALERT IS CONNECTED BETWEEN THE THERMOSTAT 
AND HVAC CONTROL SYSTEM, THIS WOULD PREVENT AIR 
HANDLER FAN FROM OPERATING.
  1. Turn off all power to the air handler and condensing unit. 

Install Condalert Control Main Unit in Secondary/Auxiliary Pan

 2. Determine location for leak detection. Place the Condalert in 

drain pan whenever possible. Condalert may be set in pan or 
attached in location using the double sided tape provided (see 
Figures 1 and 2). Do not attach to the pan until testing is complete. 

CONDALERT™

CONDENSATE OVERFLOW DETECTION AND 

CONTROL SHUTDOWN FOR SECONDARY/AUXILIARY 

CONDENSATE DRAIN SYSTEMS

Franklin Electric Co., Inc.

P. O. Box 12010

Oklahoma City, OK 73157-2010

405.947.2511 • Fax: 405.947.8720

www.LittleGiantPump.com

[email protected]

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