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48VR: Owners' Information Manual
STEP 1
Combustion Area and Vent System
For proper and safe operation, the unit needs air for combustion and
ventilation. The air openings, on the unit, the air openings to the area in
which the unit is installed, and the spacing around the unit must not be
blocked or obstructed.
The combustion inlet air area and vent hood should be inspected visually
before each heating season. The normal accumulation of dirt, soot, rust,
and scale can result in loss of efficiency and improper performance if
allowed to build up. This inspection should be done by a trained service
person.
WARNING
!
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death
and/or property damage.
If your unit makes an especially loud noise when the main burners are
ignited, shut down the heating section and call your dealer.
CAUTION
!
BURN HAZARD
Failure to follow this caution may result in personal injury.
Components in heating section may be hot after unit has been started
up. When observing flame, be careful not to get close to or touch
heating components.
Regular Dealer Maintenance (Also refer to
In addition to the type of routine maintenance you might be willing to
perform, your unit should be inspected regularly by a properly trained
service technician. An inspection (preferably each year) should include
the following:
1. Inspection of all flue product passages-including the burners, heat
exchanger, and flue collector box, Mare sure the burner flames are
blue in color and in proper adjustment. Refer to
flame.
2. Inspection of all combustion-and ventilation-air passages and
openings.
3. Close inspection of all gas pipes leading to and inside of your unit.
4. Inspection and, if required, cleaning of the outdoor and indoor
coils.
5. Inspection and, if required, cleaning of the indoor coil condensate
drain pan.
6. Inspection and cleaning of blower wheel housing and motor.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
90
Fig. 7 – To Shut-off Unit Electric Cooling
Table
Fig. 8
for burner
STEP 2
7. Inspection of all supply-air and return-air ducts for leaks,
obstructions, and insulation integrity. Any problems found should
be resolved at this time.
Fig. 8 – Monoport Burner
8. Inspection of the unit base to ensure that no cracks, gaps, etc., exist
which may cause a hazardous condition.
9. Inspection of the unit casing for signs of deterioration.
10. Inspection of all electrical wiring and components to assure proper
connection.
11. Inspection for leaks in the refrigerant circuit. Pressure check to
determine appropriate refrigerant charge.
12. Operational check of the unit to determine working conditions.
2)
Repair or adjustment should be made at this time.
Your servicing dealer may offer an economical service contract that
covers seasonal inspections. Ask for further details.
Complete service instructions can be found in the unit Installation,
Start-up and Service Instructions.
Warranty Certificate
Your unit has a limited warranty. Be sure to read the warranty carefully
to determine the coverage for your unit.
Before you call for service...
...check for several easily-solved problems.
If insufficient heating or cooling is suspected:
( ) Check for sufficient airflow. Check the air filter for dirt. Check for
blocked return-air or supply-air grilles. Be sure they are open and
unobstructed. If these checks do not reveal the cause, call your servicing
dealer.
If your unit is not operating at all, check the following list for easy
solutions:
9
MAIN
ON
OFF
STEP 3
A07797
BURNER FLAME
BURNER
MANIFOLD
C99021
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