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KHF - SERIES A FAN COIL UNITS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
Figure 15a: Drain pan float switch installed
CONDENSATE FLOAT SWITCH INSTALLATION
Ensure float switch assembly is firmly secured to the bracket.
Ensure top of float is below rim of pan. Switch will trip when
the water level reaches a point even with top of float when
float is in down position. Sensitivity may be adjusted by
threading switch assembly downward out of bracket if
necessary.
Test switch by lifting float with unit on. Unit should stop
running if switch is correctly wired. Test switch sensitivity
by filling pan and confirm switch stops unit before pan
overflows.
Supplier’s Install Instructions
1. Disconnect power to unit at main panel.
2. Clip switch bracket onto side of pan at low end and press
firmly into place ensuring switch wires are positioned up
ensure float moves freely.
3. Secure bracket into side of pan using self-tapping sheet
metal screw through upper hole in bracket.
4. Ensure float switch assembly is firmly secured to
bracket. Ensure top of float is below rim of pan. Switch
will trip when water level reaches a point even with top
of float (when float is in down position). Sensitivity may
be adjusted by threading switch assembly downward
out of bracket if necessary.
5. Ensure wiring matches the wiring diagram provided with
the unit.
6. Test switch by lifting float with unit on. Unit should stop
running if switch is correctly wired.
7. Test switch sensitivity. Fill pan and confirm that switch
stops unit before pan overflows.
8. Place warning sticker on air handler or condenser unit.
FLOAT SWITCH
DRAIN PAN
CLIP / BRACKET
Figure 15b: Drain pan float switch diagram
REPLACEMENT PARTS
Factory replacement parts should be used wherever possible to maintain the unit performance and operating characteristics
and the testing agency listings. Replacement parts may be purchased through the local Sales Representative.
Contact the local Sales Representative before attempting any unit modifications. Any modifications not authorized by the
factory could result in personnel injury and damage to the unit and could void all factory warranties and regulatory listings.
When ordering parts, the following information must be supplied to ensure proper part identification:
1. Complete unit model number
2. Unit hand connection (right or left hand) while facing the direction of airflow at the inlet
3. Complete part description including any numbers.
On warranty replacements, in addition to the information previously listed, the project CO # that appears on the unit
nameplate, is required. Contact local Sales Representative and refer to warranty policy.
All equipment and components sold through the Parts Department are warranted under the same conditions as the
standard manufacturer’s warranty with the exception that the warranty period is 12 months.
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