GE PVB94 User Manual

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5
Design Information
clearances
• The downdraft system with blower, motor  
and ductwork will occupy the cabinet below  
the countertop and cooktop.
• The blower/motor assembly can be located  
below the cabinet floor. The assembly will fit  
between 16" floor joists. Order JXRB67 for indoor  
remote locations. 
• The blower motor assembly can also be installed  
outdoors. Order JXBC67 for remote blower  
installations outdoors. 
• Refer to Clearances for information  
on appropriate placement and necessary  
clearances when planning installation.
• Refer to your specific cooktop installation  
instruction for other appropriate clearances.
• Avoid placing cabinetry directly above  
the cooking surface when possible.
If cabinetry is used above the cooking surface: 
• Use cabinets no more than 13" deep.
• Maintain 30" minimum clearance between  
cooktop and unprotected cabinets directly above  
cooktop.
• If clearance is less than 30", protect cabinet  
bottoms with flame-retardant millboard at least  
1/4" thick or gypsum board at least 3/16" thick  
covered with 28 gauge sheet steel or .02" thick  
copper.
• Clearance between cooktop and protected  
cabinetry must not be less than 24".
EXCEPTION: Installation of a listed microwave  
oven or cooking appliance over the cooktop shall 
conform to the installation instructions packed  
with that appliance.
• Working areas adjacent to the cooktop  
should have 18" minimum clearance between  
countertop and cabinet bottom.
• Installation must conform with local codes.
Ductwork
Prepare ductwork to vent to the outdoors.
• Use the shortest and straightest duct run possible.
• The maximum permissible length for duct run  
is 150 feet.
• Refer to “Duct Fittings” chart to calculate  
equivalent length for various duct configurations.
• The downdraft blower system is designed to use  
3-1/4" x 10" ductwork. It can be transitioned to  
6" round.
• Ductwork MUST be vented to the outside–never  
into a crawl space, attic or other enclosed space.
• Determine the need for a wall cap or roof cap.  
Order the cap in advance.
electrical and Gas locations
Plan the placement of the electrical outlet and gas 
(if used) carefully. Gas or electrical outlets cannot  
be placed on the back wall of the cabinet because  
it may interfere with the downdraft plenum.
• Install a standard electrical outlet within reach  
of the vent’s two-foot-long power cord.
• The vent and a GE or Monogram gas cooktop  
combination can operate from the same 120-volt  
standard duplex outlet.
• Electric cooktops must operate from a separate  
240-volt junction box.