9
ENGLISH
Indoor unit installation
Return air requirements
Closet Wall
Typical Closet Installations
Provisions shall be made to permit the air in the rooms and the living spaces to return to the air handler. Failure to comply may
cause a reduction in the amount of return air available to the blower, causing reduced air flow resulting in improper heating
and cooling of the living space. The reduced air may cause the air flow handler to cycle on the limit causing premature heating
element failure (if electric heat kits are installed).
Upflow Accessory Filter Box Kit
An accessory filter box kit can be used on the return air end of the air handler when configured in the upflow position. The filter
kit is placed over the return plenum in the floor and sealed to the plenum using sealant or caulking material and/or tape. The air
handler is placed on top of the return filter box and the return opening sealed to prevent leaks.
NOTE
: Make sure the flow arrow on the air filter is pointing towards the coil.
ADJUSTMENT KNOB
FOR 1" OR 2" FILTER
ADJUSTMENT KNOB
FOR 1" OR 2" FILTER
Accessory Air Filter Box for 1” or 2” Air Filters. Filter Size Adjustment knob is on both sides.
FILTER BASE ASSEMBLY KIT MODEL NUMBERS - FIELD INSTALLED, PURCHASED SEPARATELY
VFB-1 – 16” X 20” X 2” Small Cabinet (18/24K)
VFB-2 – 20” X 20” X 2” Medium Cabinet (30/36K)
VFB-3 – 20” X 24” X 2” Large Cabinet (42/48/54K)
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