Furnace User Maintenance; Warranty And Responsibilities - York International DFAA User's Information, Maintenance And Service Manual

FURNACE USER MAINTENANCE

Before proceeding, be sure the area is well ventilated. Turn
the thermostat OFF. If the blower is running, wait until it
stops automatically. Turn OFF the gas and electrical power
supplies to the furnace. Check all metal parts and surfaces
to be sure they have cooled to room temperature before
you begin.
Air Filters
Dirty filters greatly restrict the flow of air and may cause damage to the
moving parts of the furnace. If the filters become clogged the heat
exchangers and blower motor could overheat resulting in a potentially
dangerous situation.
The filters should be checked every 3 months (DO NOT USE PLEATED
FILTER in this furnace). On new construction, check the filters every
week for the first four weeks and every three weeks after that, espe-
cially if the indoor fan is running continuously. When replacing the fil-
ter(s) you must use filters that are the same size and type as those in
the furnace (2 - 16 x 20 x1).
Every time the filters are changed the following items should be visually
inspected:
• Check combustion air and vent pipe for blockage or leakage.
• Check all components to be sure they are in good condition and
that there are no obvious signs of deterioration.
• Check for dirt or lint on any surfaces or on components. Do not try
to clean any of the surfaces or components. Cleaning of the fur-
nace and its components must be done by a qualified service pro-
fessional.
Removing Filters
Internally Mounted Air Filters
The air filter is in a rack that is attached to the door of the furnace.
To remove the filter you must do the following:
1. Before proceeding, be sure the area is well ventilated. Follow
instruction "To turn off the appliance". Check all metal parts and
surfaces to be sure they have cooled to room temperature before
you begin.
2. Remove the filter door.
3. Remove the air filter by sliding it down the track. The air filter will
slide out of the rack.
4. Replace throw away filter(s)) with the same size new filter(s).
Throw away filter(s)) may be replaced with cleanable filter(s) at
this time. Cleanable filter(s) may be cleaned as described in the
manufacturer instructions or as described in these instructions.
To replace the filter after cleaning you must do the following:
1. Slide filter into place. If the filter has been cleaned, make sure it is
dry before re-installing it.
2. Replace the door or cover panel.
3. Make sure the door snaps into the retaining clips.
4. Follow the Operating Instructions to place the furnace back in
operation.
How to Clean your Filter
High-velocity or cleanable filters may not be used in this furnace.
Unitary Products Group
Blower Care
Even with good filters properly in place, blower wheels and motors will
become dust laden after long months of operation. The entire blower
assembly should be inspected annually. If the motor and wheel are
heavily coated with dust, they can be brushed and cleaned with a vac-
uum cleaner. If the blower cannot be properly cleaned without removing
it from the furnace, then call a qualified service agency. Only a qualified
service agency can perform this service.
Make sure you DO NOT move the clip on weight on the
indoor fan wheel when cleaning the wheel. This weight is
used to balance the wheel. Moving the weight will cause
the fan wheel to vibrate.
Motor Lubrication
The motors in these furnaces are permanently lubricated, and do not
require periodic oiling.

WARRANTY AND RESPONSIBILITIES

It is the sole responsibility of the home owner to make certain that the
gas conversion furnace has been correctly set up and converted to the
proper fuel (Propane or Natural gas) and adjusted to operate properly.
The manufacturer warrants the furnace to be free from defects in mate-
rial or workmanship for the stated time in the warranty agreement (see
warranty certificate packed with the furnace).
However, the manufacturer will not be responsible for any repair costs
to correct problems due to improper set-up, improper installation, fur-
nace adjustments, improper operating procedure by the user, etc.
Some specific examples of service calls which cannot be included in
warranty payments are:
1. Converting the furnace to use another type of gas.
2. Correcting faulty duct work in the home.
3. Correcting wiring problems in the electrical circuit to the furnace.
4. Resetting circuit breakers or other switches.
5. Adjusting the burner air shutter or service calls made to correct
problems caused by improper air adjustment.
6. Correcting problems caused by improper gas supply pressure to
the furnace.
7. Instructional training on how to light and operate furnace.
8. Furnace problems caused by installation of air conditioner, heat
pump, or other air quality device which is not approved.
9. Problems caused by improper installation of the furnace flue
assembly (roof jack).
10. Adding a roof jack extension because of unusual wind conditions
or snow conditions.
11. Adjusting or calibrating the thermostat.
12. Problems caused by construction debris which has fallen into the
flue or combustion air openings.
13. Replacement of fuses.
14. Problems caused by orifice plugged or restricted by spider webs.
You should establish a firm understanding of these responsibilities with
your manufactured housing dealer, service company or gas supplier so
there will be no misunderstanding at a later time.
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