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of the condensate unit. This will give a siphoning effect which
will improve efficiency of the condensate unit and will, in most
cases, eliminate the need for a check valve (Figure 2). If it is
not possible to slope discharge line down, make an inverted
"U" trap directly above the pump at the highest point.
6. Do not install this pump in a manner that will subject it to
splashing or spraying.
7. Do not install this pump inside air plenums.
DESCRIPTION
Your Little Giant condensate pump is designed as an automatic
condensate removal pump for water dripping off an air conditioner
evaporative coil. The pump is controlled by a float/switch mecha-
nism which turns the pump on when approximately 2-1/4" of water
collects in the tank, and automatically switches off when the tank
drains to approximately 1-1/4".
ELECTRICAL CONNECTIONS
1. Shut off electrical power at fuse box before making any connec-
tions. All wiring must comply with local codes.
2. Connect power cord to line voltage specified on motor and
nameplate. Power cord must be connected to a constant
source of power (not a fan or other device that runs intermit-
tently).
3. The safety overflow switch should be connected to a class II
low voltage circuit. To control a thermostatic circuit the COM
and NO connections from the safety switch are to be wired
in series with the low voltage thermostat circuit to shut down
the heating/AC circuit. The COM and NC switch contacts may
be used to actuate a low voltage alarm circuit (connected in
series) if the heating/cooling system can not be disrupted. The
safety switch comes from the factory with leads connected to
the COM and NO switch terminals. Typical hook-up of "NC"
circuits would be (Figures 4 & 5).
Figure 4.
2
Figure 5.
TESTING
1. Turn on power.
2. Remove the motor/tank cover assembly and hold it level.
3. Test motor switch by raising motor switch float with finger (Figure
6). Motor should turn on just before float contacts cover.
4. Test safety switch by raising safety switch float with finger.
Safety switch should activate before float contacts cover.
5. Replace motor/tank cover assembly on tank.
This pump is suitable for gas furnace condensate applications.
Caution must be taken to ensure acidity of condensate does not
increase below the average pH of 3.4 (to prevent localized pocket
of acid that acts like a battery causing pitting) by routinely cleaning
or flushing tank with fresh water.
Figure 6.
SERVICE INSTRUCTIONS
1. Make certain that the unit is disconnected from the power source
before attempting to service or remove any component!
2. Be sure the floats move freely. Clean as necessary (Figure 6).
3. Clean the tank with warm water and mild soap.
4. Check the inlet and outlet piping. Clean as necessary. Be sure
there are no kinks in the line that would inhibit flow.
F INTRODUCTION
Votre pompe a condensats Little Giant est concue comme une
unite automatique d'evacuation des condensats. Elle evacue
l'eau condensee egouttant de la volute de l'evaporateur d'un
systeme de climatisation. La pomp est actionee par un mechisme
flotteur/ interrupteur lequel entraine le demarrage dela pompe
oorsque environ 2 po 1/4 d'eau s'accumule dans le reservoir.
La pompe s'arrete automatiquement lorsqu'il ne reste plus
qu'environ 1 po 1/4 d'eau.
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