Exterior-mounted vent motor
NOTE:
Island location
Figure 6
9” round ductwork system
Injury Hazard
Use two or more people to move and install downdraft vent.
Failure to follow this instruction can result in back or other injury.
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| Maximum length = 55 feet |
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1 - transition |
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2 - 90 elbows |
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1 - wall | cap |
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10 feet | straight |
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| Carefully insert downdraft vent into | ||
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Length of 9” system = 20 feet |
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Recommended |
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| fittings | downdraft vent during lifting. Check that | |||||||
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| downdraft vent is parallel to side of cutout | ||
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| and that mounting brackets rest gently on | ||||||||
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...;::..- |
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.:::::::::y‘7::. |
| ,:;:~:. .....,.,. |
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<;;$P= |
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x | 14” | x 14” | to | 9” |
| to 3 1/4”xl4” |
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to 9” | = 4.5 ft. | 9” | 90” | elbow | = | 90” | elbow = 9 ft. |
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| 5 | ft. |
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Figure 7
Roof venting
1
Figure 8
Maximum length of ductwork system
For best performance, use no more than three 90” elbows. If more than one elbow is used, make sure that there is a minimum of 24 inches of straight duct between any two elbows. Do Not install two elbows together. It is recommended that you use round duct instead of rectangular duct, especially if elbows are required. If rectangular duct is required, it should be transitioned to 9” round duct as soon as possible.
Determining the length of system you need:
To calculate the length of system you need, add the equivalent feet for each duct piece that will be needed. See example for 9” round ductwork system.
--. ....:.::::: :$::.PT~:.. -
90” elbow = | 9” to | 45” | elbow = |
5 ft. | 14” = 1 ft. | 2.5 | ft. |
IIPlace cardboard or another form of
’protection on top of a flat surface where you can easily assemble the downdraft vent system. Remove parts packages, downdraft vent and blower box from carton. Remove all shipping materials, tape and protective film from downdraft vent and blower box.
12.1
L1
Attach one overcounter mounting bracket to each side of the downdraft vent with flange side out.
I,
each leg. Do Not tighten screws,
Ductwork may be installed under concrete slab. See Panel C.
Do not install exterior vent motor in window well.
front of downdraft vent base and adjust position of legs until downdraft is level vertically. Use a pencil to mark the top of each leg on face of downdraft vent. Then mark location of support leg mounting holes on cabinet floor. Remove downdraft vent from cutout. Drill starter holes at each mounting screw location on cabinet floor. Align top of legs with pencil marks on face of downdraft vent. Tighten screws in legs.
16Attach.1damper plate (supplied with exterior blower svstem) to front of
downdraft vent using 4 hex washer nuts.
171. Remove the 2
cover. Determine which direction (rear or down) electrical connection will need to run from appliance wiring box. Remove cover. Knock out rear or lower wiring opening in wiring box.
Power supply cable needed between exterior blower assembly and blower box is not provided.
Is Determine the location where the ’ exterior blower box will be located.
Cut opening in roof or wall for ductwork to exterior blower. Install exterior blower.
Wall Installations
l Use caulking compound between mounting flange and wall.
Roof Installations
l Follow standard roofing procedures.
l The flashing sheet should be entered over the roof opening.
l Lower edge of flashing should lie on top shingles and upper edge underneath shingles.
l Seal assembly between roof, fan and flashing with roofing mastic to prevent leaks.
