Installation, Operation, & Maintenance for FC Horizontal Basic
Page: 3 of 3
Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | [email protected] | www.krueger-hvac.com
Operation and Control
The unit is normally wired to operate with a four-position
fan selector switch:
- OFF
- HI High Fan Speed
- MED Medium Fan Speed
- LO Low Fan Speed
An external thermostat (normally wall mounted) is used to
select the desired room temperature.
Where the unit is provided with electric heating (optional),
the external heat/cool changeover switch has to be set in
the heat position to enable the thermostat to switch the
heater on when the room temperature drops below the set
point.
Maintenance
CAUTION: All maintenance must be
performed by a trained, experienced
service technician.
To prevent electrical shock, disconnect electric
power to system at main fuse or circuit breaker
box until maintenance is complete.
While the HFH model is fully accessible, maintenance
on the HFEC, HFHP, and HFI models is performed by
removing the access panel.
The unit must be isolated
from the power supply.
Filter ( HFHP, HFEC, & HFI )
The useful life of the throw-away filter depends on the
environment in which the unit is operating. However, it
is recommended to change the filter at least every three
months.
To replace the filter (HFEC & HFI) , remove the access
panel, unfasten the velcro-backed filter-retaining channels,
remove channel to replace the filter. For the HFHP,
unfasten the filter retains and remove the filter.
Drain Pan
Periodic cleaning of the drain pan is essential, especially
in high humidity areas. Remove all foreign material to
ensure the free flow of condensation.
Coils
Clogged coils are a major cause of unit failure. Periodic
inspection should take place at least once a year.
1.
Dirty coils should be cleaned with the appropriate
brush and vacuum cleaner or compressed air.
Electric Motor(s)
A yearly motor inspection should take place and the
following is recommended:
1.
Clean all dirt and lint with a brush and/or vacuum
cleaner.
Strainer (Optional)
The frequency that the strainer has to be cleaned depends
on the overall conditions of the distribution piping system.
However, frequent cleaning is recommended during the
installation and start-up stages and thereafter at every
summer/winter season change.
1.
Open the clean-out cap on the strainer to release the
dirt. Close it once clear liquid is observed.
Pete’s Plug (Optional)
The plug is installed as an aid in measuring pressure and
temperature. See complete explanation page for details.
Electric Heater(s) (Optional)
The heater is fastened to the fan deck at the blower outlet
with sheet metal screws. In case of heater failure, follow
the procedure described below:
1.
Disconnect all power sources before attempting to
open the unit. Check all electrical connections to
ensure the unit is fully isolated.
2.
Unscrew the fan deck and expose the heater(s).
3.
If the thermal cut-out switch is defective, disconnect
the electrical wires and unscrew it from the heater
assembly. Obtain a replacement from Krueger and
reinstall.
4.
If the heating element (the spiral resistance wire) is
burned out, unscrew the heater assembly from the fan
deck, disconnect the terminals and replace with a new
heater obtained from Krueger.
When contacting Krueger for replacement parts,
always refer to the complete Model and Serial
numbers on the Serial Plate.
!
