Fresh Air Door; Condensate Disposal System; Servicing / Chassis Quick Changeouts; Routine Maintenance - Friedrich VHA24K25 Installation & Operation Manual

12) Fresh Air Door

The Fresh Air Door is an "intake" system. The fresh air door is
opened via a slide on the front of the chassis located just above
the indoor coil. Move the slide left to open and right to close the
fresh air door. The system is capable of up to 60 CFM of fresh air
@ ~.3" H20 internal static pressure.

13) Condensate Disposal System

The VPDP1 drain pan features two ¾ female PVC fi ttings to
attach a drain connection to on the left or right side of the drain
pan. Condensate piping can be routed to the left, right or beneath
the unit platform.
See page 8 or the drain pan installation manual for more
information.
Part 1: The system's fi rst stage increases energy
effi ciency utilizing a factory installed fan that slings
the cold condensate onto the hot outdoor coil.
Part 2: When high outdoor humidity prevents the slinger
from disposing of all the condensate, the excess
condensate overfl ows into the condensate drain
pan and out of the ¾" internal drain connections.
Part 3: If Parts 1 & 2 fail for any reason, excess
condensate overfl ows from a spillway directly into
the wall plenum to the outside of the building. IF
THIS OCCURS, THIS IS YOUR WARNING THAT
THE CHAS SIS OR DRAIN NEEDS SERVICING.
IV. Service & Warranty

14) Servicing / Chassis Quick Changeouts

The chassis is designed for quick disconnect and change out. For
minor electrical service, the control box cover lifts straight up after
the screws & disconnect head are removed. For major electrical,
refrigeration and fan service the chas sis may be removed from
utility closet.
To Remove the Chassis from the Closet:
A. Switch the wall Ther mo stat off.
B. Pull the Power Disconnect located in the front of the chassis.
C. Disconnect the thermostat wiring harness.
D. Disconnect the electrical connection.
E. Disconnect the ductwork.
F. Slide the chassis out of the wall ple num.
G. Lift the chassis out of the utility closet.
Electrical shock and moving parts hazard can cause injury
or death. Pull out the disconnect head found on the front
of the chassis before servicing.
920-159-02 (10-04)

15) Routine Maintenance

Performing Routine Maintenance
With the proper maintenance and care, your system will operate
economically and dependably. Maintenance can be accomplished
easily by referring to the following directions. However, before
performing any maintenance, consider these important safety
precautions:
WARNING: Electrical Shock Hazard. Before attempting any service
work or routine maintenance, turn off all electrical connections to
the unit. Failure to do so may result in property damage, personal
injury and/or death.
CAUTION: Although great care has been taken to minimize sharp
edges in the construction of your unit, be extremely careful when
handling parts or reaching into the unit.
Replace Air Filter
A dirty air fi lter reduces the effi ciency of your Vert-I-Pak and
allows lint and dirt to accumulate on the indoor-air coil. Lint and
dirt on the indoor-air coil can damage your unit and void the
warranty. The air fi lter should be replaced as it becomes dirty.
To replace the fi lter (chassis mounted return air fi lter):
1. Slide the fi lter clear of the fi lter rails.
2. Remove the fi lter.
3. Install new disposable fi lter.
CAUTION: Do not operate your system without a fi lter in place,
nor block the front of the unit return air opening.
Inspect and Clean Indoor-air Coil
Eventually, minor amounts of lint and dirt may pass through the
fi lter and collect on the indoor-air coil. These minor accumulations
can be carefully vacuumed away with a brush attachment on
a vacuum cleaner. Care must be taken to avoid bending the
aluminum fi ns on the coil. Bent fi ns should be straightened using
a special fi n tool available from most HVAC service technicians.
Inspect Outdoor-air Intake and Exhaust
The unit's outdoor-air intake and outdoor-air exhaust paths must
remain clear. Check the OA exhaust frequently. Keep it free of all
debris, snow, or ice. The OA intake should also be kept free of
obstructions. Blocking the OA exhaust or OA intake opening will
reduce the effi ciency of your unit, could damage it, and may void
your warranty.
Inspect and Clean Condensate Drain
The condensate drain must be routed to a suitable drainage
area. Check the unit condensate drain periodically. Keep it free of
anything that may block or impede the fl ow of condensate water.
If there is any accumulation of foreign matter in the drain pipe, it
should be removed and cleaned. The entire drain line must be
protected from freezing.

16) Warranty

All service work must be done by a qualifi ed servicer. See Warranty
on the next page, and consult your dealer or contractor for details
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