Maintenance - Lennox VRF V22B Series User Manual

Maintenance

WARNING
!
ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD.
Before performing any maintenance, power to unit
must be off at the unit disconnect switch.
CAUTION
!
Check wiring for signs of loose connections.
Use a clean, dry cloth to wipe the remote con trol.
Never use a damp or wet cloth to clean the remote
control.
Use a clean, dry cloth to wipe the indoor unit. If
necessary, dampened cloth may be used.
Do not use a chemically treated dust cloth on either
the indoor unit or remote control.
Do not use benzene, paint thinner, polishing powder
or similar products to clean the indoor unit or control.
These substances may cause the plastic surface to
crack or become dam aged.
Preparing Unit for Prolonged Idle Periods
The unit must be prepared before lengthy periods of
inactivity:
• Set the controller so that the indoor unit operates in
the fan only mode for 8 to 12 hours.
• Thoroughly clean and replace return air filters.
• Use a clean, dry cloth to wipe cabinets.
• Turn the unit OFF at the wired controller or re mote
control; then, disconnect power to the unit.
• Remove batteries from the remote control.
Returning the Unit to Operation after Pro longed Idle
Periods
If the unit has been inactive for an extended period of time,
it must be prepared for operation:
• Properly clean and replace return air filters.
• Use a clean, dry cloth to wipe unit front panels.
• Insert batteries into the remote control.
• If power was disconnected, reconnect power to the
unit for at least 12 hours before returning the unit to
operation.
Return Air Filters
Blocked or dirty return air filters affect system oper ation
and efficiency. Air filters should be checked monthly in
order to ensure proper air flow to the in door unit. It may be
necessary to check the filter more frequently if the unit is
installed in an area with a large amount of dust.
The filter may be removed and cleaned, or it should be
replaced with a filter of like kind and size if it is impossible to
clean the filter. Refer to the parts ar rangement illustrations
to locate the filter in your indoor unit.
The VVCB return air filter access is shown on the parts
arrangement illustration on page 3. Remove the two
screws that secure the filter access cover to the unit
cabinet. Remove the cover and slide the filter out of the
cabinet.
The VMDB and VHIB return air filter is segmented to allow
it to be removed in tight spaces.
The VOWA filters are accessed through the re turn air grille
as shown in these illustrations.
One-Way Cassette
Slide to release
DISCHARGE AIR LOUVER
return air grille
Lift tab
to remove
filter
AIR FILTER
(Open return air grille)
6
VOWA
RETUN AIR GRILLE