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48VR: Owners' Information Manual
Emergency Heat Mode
If you should have problems with the heat pump portion of your system,
this mode allows your supplemental gas heating source to keep your
home or office warm until your heat pump can be serviced.
Maintenance and Service
This section discusses maintenance that should be performed on your
system. Most maintenance should be performed by your dealer. You, as
the owner, may wish to handle some minor maintenance for your new
unit.
Routine Maintenance
All routine maintenance should be handled by skilled, experienced
personnel. Your dealer can help you establish a standard procedure.
For your safety, keep the unit area clear and free of combustible
materials, gasoline, and other flammable liquids and vapors.
To assure proper functioning of the unit, flow of condenser air must not
be obstructed from reaching the unit. Clearance from the top of the unit
is 48 in. (1219 mm). Clearance of at least 36 in. (914 mm) is required on
sides except the power entry side (42 in. (1067 mm) clearance) and the
duct side (12 in. (305 mm) minimum clearance). Also, ensure that the
return-air duct connection (s) is physically sound, is sealed to the furnace
casing, and terminates outside the space containing the furnace.
Maintenance and Care for the Equipment Owner
Before performing equipment maintenance yourself, please carefully
consider the following:
WARNING
!
FIRE, EXPLOSION, ELECTRICAL SHOCK AND CUT
HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
1.
Turn off gas supply first, then all electrical power to your unit
and install lock-out tag before servicing or performing
maintenance.
2.
When removing access panels or performing maintenance
functions inside your unit, be aware of sharp sheet metal parts
and screws. Although special care is taken to reduce sharp
edges to a minimum, be extremely careful when handling parts
or reaching into the unit. Wear safety glasses, gloves, and
appropriate protective clothing.
Air Filters
CAUTION
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in property damage.
Never operate your unit without filters in place. An accumulation of
dust and lint on internal parts of your unit can cause loss of efficiency
and blower motor and/or compressor damage.
The air filter(s) should be checked every 3 or 4 weeks and changed or
cleaned whenever it becomes dirty. Dirty filters produce excessive stress
on the blower motor and can cause the motor to overheat and shut down.
This unit must have air filters in place before it can be operated. These
filters can be located in one of at least two places. In many applications,
the installer will provide return air filter grilles mounted on the wall or
ceiling of the conditioned structure. In the instance of filter grilles, the
filters can simply be removed from the grille and replaced.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
The other typical application is an accessory filter rack installed inside
the unit itself. The following information is given to assist in changing
filters used in these internal filter racks.
Filter kits are available as a purchased accessory or a factory installed
option. The same filter kit is included with the accessory economizers
and factory installed economizers.
Table 1 – Replacement Filter Sizes
Unit Size
24-040/060
1 each 24 x 14 x 1 (610 x 406 x 25),
36-060/090
1 each 24 x 16 x 1 (610 x 406 x 25),
*
48-090/115/130
1 each 24 x 16 x 1 (610 x 406 x 25),
*
60-090/115/130
*. Units with bent indoor coil.
To replace or inspect filters in accessory filter rack (See
1. Remove the filter access panel using a 5/16-in. nut driver.
2. Remove the filter(s) by pulling it out of the unit. If the filter(s) is
dirty, clean or replace with a new one.
When installing the new filter(s), note the direction of the airflow arrows
on the filter frame which should be pointing at the indoor coil.
3. Reinstall filter access panel ensuring opening is air and water tight.
If you have difficulty locating your air filter(s) or have questions
concerning proper filter maintenance, contact your dealer for
instructions. When replacing filters, always use the same size and type of
filter that was supplied originally by the installer.
Fans and Fan Motors
Periodically check the condition of fan wheels and housings and fan
motor shaft bearings. Contact your dealer for the required annual
maintenance.
Heat Exchanger
To ensure dependable and efficient heating operation, the heat exchanger
should be checked by a qualified maintenance person before each
heating season, and cleaned when necessary. This checkout should not
be attempted by anyone not having the required expertise and equipment
to properly do the job. Contact your dealer for the required periodic
maintenance.
Indoor and Outdoor Coils
Cleaning of the coils should only be done by qualified service personnel.
Contact your dealer for the required annual maintenance.
Condensate Drain
The drain pan and condensate drain line should be checked and cleaned
at the same time the cooling coils are checked by your dealer.
Compressor
All compressors are factory shipped with a normal charge of the correct
type of refrigeration grade oil.
Condenser (Outdoor) Fan
!
PERSONAL INJURY AND UNIT DAMAGE HAZARD
Failure to follow this warning could result in personal injury, death or
property damage.
Do not insert sticks, screwdrivers, or any other objects into revolving
fan blades.
5
Filter Size in. (mm)
2 each 20 x 12 x 1
(508 x 305 x 25 mm)
24 x 16 x 1 (610 x 406 x 25)
24 x 18 x 1 (610 x 457 x 25)
24 x 18 x 1 (610 x 457 x 25)
Fig.
WARNING
2):
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