Greenheck FGI User manual

Fabra Hood • Form F 1

Document 471322

Model FGI/FGR Fabra Hood

Form F - Single Section with Filters

Throat length less than or equal to 72 inches

Assembly Instructions

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install,

operate or maintain the product described. Protect yourself and others by observing all safety information. Failure

to comply with these instructions will result in voiding of the product warranty and may result in personal injury

and/or property damage.

Standard Assembly

Step 1 Fabra hood Form F 471322

HOOD END ASSEMBLY

(FEMALE RIB)

HOOD RAIL ASSEMBLY

SIDE FILTER

HOOD SUPPORT ANGLE

BASE ASSEMBLY

END FILTER

SIDE FILTER

HOOD END ASSEMBLY

(MALE RIB)

HOOD PANEL

Step 1 – Open crates and separate parts

Open the shipping crates and separate the parts according to the size of the unit, refer to Figure 1.

Step 2 – Place BASE ENDS and BASE SIDES

Place the two base ends and the two base sides in their approximate relationship to each other, see Figure 2. Fasten

together using three 1/4-20 fasteners per corner for 5 inch high base and four 1/4-20 fasteners per corner for 12 inch

high base.

NOTE: Fasteners should be hand tightened only until Step 4.

On some units where the difference between the hood width and throat width is greater than 32 inches, a reinforcing

plate is required in the corners of the base, refer to Figure 2, Detail A.

Figure 2 Fabra hood B #471321

BASE END

BASE SIDE

REINFORCING PLATE

DETAIL A

BASE END

BASE SIDE

IMPORTANT: For high wind rated hoods,

follow assembly instructions starting on page 5.

Figure 2

Figure 1

Fabra Hood • Form F2

Step 3 – Attach HOOD BASE ENDS to HOOD BASE SIDES

Attach the hood support angle to the base assembly (hand tight), using four 1/4-20 fasteners per angle, see Figure 3,

Detail B.

On some units, two diagonal braces come pre-attached to the hood support angle. Fasten the loose end of the

diagonal braces to the base assembly, using one 3/8-16 fastener per diagonal brace. See Figure 3, Detail C.

Figure 3 Fabra hood B #471321

BASE

ASSEMBLY

HOOD SUPPORT

ANGLE

DETAIL B

BASE

ASSEMBLY

HOOD SUPPORT

ANGLE

DETAIL C

DIAGONAL

BRACE

Step 4 – Tighten fasteners and caulk all inside corners

Tighten all base, side and base end fasteners. Caulk all inside corners where the base sections come together. At

this point, the base may be lifted onto the roof curb before proceeding with further assembly.

Step 5 – Attach FILTER CHANNELS to HOOD SUPPORT ANGLE

Attach the ﬁlter side channel (hand tight) to the hood support angle and the ﬁlter side channel assembly (hand tight)

to the base side, using two 5/16 x 1 inch weldstud fasteners per channel, see Figure 4. Sandwich the end closure

angle between the base end and the side ﬁlter channel assembly, see Figure 4.

Figure 4 Fabra hood Form F 471322

FILTER SIDE CHANNEL

ASSEMBLY

BASE ASSEMBLY

HOOD SUPPORT

ANGLE

FILTER SIDE CHANNEL END CLOSURE ANGLE

Figure 4

Figure 3

Fabra Hood • Form F 3

Step 6 –Attach END ANGLE to the ends of SIDE CHANNELS

Attach the end angle (hand tight) to the ends of the side ﬁlter channel assemblies and side channels using four

5/16 x 1 weldstud fasteners per end angle, see Figure 5. In addition, units with throat widths greater than 36 inches

will require ﬁlter end channel assemblies, see Figure 5, Detail D. Fasten ﬁlter end channel assembly (hand tight) to

the end closure angle and end angle, using two 5/16 x 1 weldstud fasteners per assembly.

Figure 5 Fabra hood Form F 471322

END ANGLE

FILTER SIDE CHANNEL

ASSEMBLY

FILTER END CHANNEL

ASSEMBLY

END CLOSURE ANGLE

DETAIL D

FILTER SIDE CHANNEL

ASSEMBLY END ANGLE

END ANGLE

FILTER SIDE CHANNEL

Step – 7 Install FILTERS and tighten fasteners

Slide ﬁlters in from both ends of unit. Tighten all ﬁlter channel and end angle fasteners only after ﬁlters are in place.

Step 8 – Attach HOOD RAIL ASSEMBLY to HOOD SUPPORT ANGLES

Attach the hood rail assembly to the hood support angles using 3/8 x 3/4 inch bolt with 3/8 inch Nyloc nut at each

attachment point, see Figure 6.

NOTE: Fasteners should be hand tightened only until Step 10.

Figure 6 Fabra hood Form F 471322

HOOD RAIL ASSEMBLY

NYLOC NUT

HOOD SUPPORT ASSEMBLY

HOOD RAIL ASSEMBLY

Figure 6

Figure 5

Fabra Hood • Form F4

Step 9 – Assemble HOOD PANELS to HOOD RAIL ASSEMBLY

Assemble hood panels to hood rail assembly. The hood end assembly with the “male rib” is to be installed ﬁrst, see

Figure 7, Detail E. Place the remaining hood panels in place, interlocking panels as you go, see Detail E. Secure each

hood panel to the hood rail assembly as it is put in place using four 12 x 3/8 inch sheet metal screws with sealing

washers per hood panel. The hood end assembly with the “female rib” is to be installed last.

NOTE: Hoods over 9 feet wide are supplied with special hood clips. See Detail F, hood panels have predrilled holes

for hood clip installation. Install clips as hood panels are being put in place, using one 12 x 5/8 inch sheet metal

screw with sealing washer per hood clip. To install clips in the last panel, remove the end ﬁlters to provide access to

the underside of the hood. The ﬁlters can be easily replaced after the hood is completely assembled.

Figure 7 Fabra hood Form F 471322

DETAIL E

HOOD RAIL

ASSEMBLY

HOOD PANEL

HOOD END ASSEMBLY

(MALE RIB)

HOOD RAIL

ASSEMBLY

MALE RIB

FEMALE RIB

DETAIL F

HOOD PANEL

(MALE RIB)

NO. 12 x 5/8 SHEET METAL SCREW

WITH SEALING WASHER HOOD PANEL

(FEMALE RIB) MALE RIB FEMALE RIB

HOOD CLIP

Step 10 – Tighten fasteners

Tighten all pivot bracket fasteners.

NOTE: There may be extra fasteners.

Figure 7

Fabra Hood • Form F 5

High Wind Assembly

Step 1 – Open crates and separate parts

Open the shipping crates and separate the parts according to the size of the unit, refer back to Figure 1, page 1.

Step 2 – Place BASE ENDS and BASE SIDES

Place the two base ends and the two base sides in their approximate relationship to each other, see Figure 2. Fasten

together using three 1/4-20 fasteners per corner for 5 inch high base and four 1/4-20 fasteners per corner for 12 inch

high base.

NOTE: Fasteners should be hand tightened only until Step 4.

On some units where the difference between the hood width and throat width is greater than 32 inches, a reinforcing

plate is required in the corners of the base, refer to Figure 2, Detail A.

Figure 2 Fabra hood B #471321

BASE END

BASE SIDE

REINFORCING PLATE

DETAIL A

BASE END

BASE SIDE

Step 3 – Attach HOOD BASE ENDS to HOOD BASE SIDES

Attach the hood support angle to the base assembly (hand tight), using four 1/4-20 fasteners per angle, see Figure 3,

Detail B.

On some units, two diagonal braces come pre-attached to the hood support angle. Fasten the loose end of the

diagonal braces to the base assembly, using one 3/8-16 fastener per diagonal brace. See Figure 3, Detail C.

Figure 3 Fabra hood B #471321

BASE

ASSEMBLY

HOOD SUPPORT

ANGLE

DETAIL B

BASE

ASSEMBLY

HOOD SUPPORT

ANGLE

DETAIL C

DIAGONAL

BRACE

NOTE: Depending on the size of the hood it may be easier to assemble unit on the ground and lift to the roof

assembled. This is due to the self tapping screws that need to be fastened down the center of the hood.

IMPORTANT: Do not climb on top of hood to fasten screws in the center of the hood.

Figure 2

Figure 3

Fabra Hood • Form F6

Step 4 – Tighten fasteners and caulk all inside corners

Tighten all base, side and base end fasteners. Caulk all inside corners where the base sections come together. At

this point, the base may be lifted onto the roof curb before proceeding with further assembly.

Step 5 – Attach FILTER CHANNELS to HOOD SUPPORT ANGLE

Attach the ﬁlter side channel (hand tight) to the hood support angle and the ﬁlter side channel assembly (hand tight)

to the base side, using two 5/16 x 1 inch weldstud fasteners per channel, see Figure 4. Sandwich the end closure

angle between the base end and the side ﬁlter channel assembly, see Figure 4.

Figure 4 Fabra hood Form F 471322

FILTER SIDE CHANNEL

ASSEMBLY

BASE ASSEMBLY

HOOD SUPPORT

ANGLE

FILTER SIDE CHANNEL END CLOSURE ANGLE

Step 6 –Attach END ANGLE to the ends of SIDE CHANNELS

Attach the end angle (hand tight) to the ends of the side ﬁlter channel assemblies and side channels using four

5/16 x 1 weldstud fasteners per end angle, see Figure 5. In addition, units with throat widths greater than 36 inches

will require ﬁlter end channel assemblies, see Figure 5, Detail D. Fasten ﬁlter end channel assembly (hand tight) to

the end closure angle and end angle, using two 5/16 x 1 weldstud fasteners per assembly.

Figure 5 Fabra hood Form F 471322

END ANGLE

FILTER SIDE CHANNEL

ASSEMBLY

FILTER END CHANNEL

ASSEMBLY

END CLOSURE ANGLE

DETAIL D

FILTER SIDE CHANNEL

ASSEMBLY END ANGLE

END ANGLE

FILTER SIDE CHANNEL

Step – 7 Install FILTERS and tighten fasteners

Slide ﬁlters in from both ends of unit. Tighten all ﬁlter channel and end angle fasteners only after ﬁlters are in place.

Figure 4

Figure 5

Fabra Hood • Form F 7

Step – 8 HOOD RAIL ASSEMBLY

NOTE: For easier assembly and lifting elevate hood rail assembly on blocks.

Lay out hood rail assembly and hood end angles, see Figure 6. Install thread cutters (hardware kit # 415041 - 5/16-

18 x 1 inch) from underneath, ﬁrst through hood end angles and second hood rail assembly.

NOTE: Use a builders square to ensure the corners of the frame are as close to 90º as possible.

5/16 -18 x 1 in.

THREAD CUTTER

5/16 -18 x 1 in.

THREAD CUTTER

5/16 -18 x 1 in.

THREAD CUTTER

5/16 -18 x 1 in.

THREAD CUTTER

High Wind - 1 Fabra hood B #471321

USE PROVIDED

HARDWARE KIT # 415041 HOOD END ANGLE

HOOD RAIL ASSEMBLY

Step 9 – Install HAT CHANNEL

Place diagonal end panel supports with the formed angle running the length of the part facing out and slots next

to hat channel. Fasten diagonals with whiz nut (hardware kit # 415456). Leave wiz nuts snug and DO NOT tighten.

Lift hat channel into place. The diagonals will support the hat channel as it is being installed. Use thread cutters

(hardware kit # 415456) to attach the hat channel to the diagonal end panel supports. Tighten wiz nuts.

5/16 -18 in. WHIZ NUT

HAT CHANNEL

5/16 -18 x 1 in.

THREAD CUTTER (BOTH SIDES)

USE PROVIDED HARDWARE KIT

# 415041 AND 415456

High Wind - 2 Fabra hood B #471321

5/16 -18 in. WHIZ NUT

5/16 -18 x 1 in.

THREAD CUTTER (BOTH SIDES)

5/16 -18 in. WHIZ NUT

DIAGONAL END PANEL SUPPORT

NOTE: Adjustment of the hat channel may be needed. Ensure there is no more than an 1/8 inch gap between the hat

channel and hood panel.

Figure 7

Figure 6

Fabra Hood • Form F8

Step 10 – Install HOOD END PANEL (MALE RIB)

Lift the hood end panel (male rib) into place. Use the 1/4-20 x 1 thread rolling screws with washer (hardware kit #

417119) to attach hood end panel to the diagonal end panel supports at the holes in the hood end panel that line will

line up holes in the diagonal end panel supports.

Use four #12-14 x 1 inch self-tapping screws (hardware kit # 415450) to attach the hood panel to the hat channel.

Use four #12-11 x 5/8 sheet metal screws (hardware kit # 417467) to attach the hood panel to the hood rail

assembly.

HOOD PANEL/END PANEL

ASSEMBLY

NO. 12-14 x 1 in.

SELF TAPPING SCREW

NO. 12-11 5/8 in.

SHEET METAL SCREW

NO. 12-11 5/8 in.

SHEET METAL SCREW

1/4 -20 x 1 in.

THREAD ROLLING SCREW WITH WASHER

High Wind - 3 Fabra hood B #471321

USE PROVIDED HARDWARE KIT

# 417467 AND 415450

Figure 8

Fabra Hood • Form F 9

Step 11 – Install HOOD PANELS to HOOD RAIL ASSEMBLY

Place the next hood panel by interlocking each panel as shown in Figure 9, Detail E. Secure each hood panel to

the hood rail assembly as it is put in place, using four #12-14 x 1 inch self-tapping screws (hardware kit # 415450)

to attach the hood panel to the hat channel. Use four #12-11 x 5/8 sheet metal screws (hardware kit # 417467) to

attach the hood panel to the hood rail assembly. Using quantity 10 sheet metal screws (hardware kit # 416900) with

sealing washers per hood panel. Place the remaining hood panels in place with the hood end assembly with the

female rib is to be installed last as shown in step 10, page 8.

IMPORTANT: Do not drive sheet metal screws all the way through both sides of the ribs as this could allow water to

leak through the hood. Screws are to fasten only the ﬁrst 2 layers of the rib joint.

1/4 -20 x 1 in.

THREAD ROLLING SCREW

WITH WASHER

NO. 12 -14 x 1 in.

SELF TAPPING SCREW (QTY OF 10 PER RIB)

USE PROVIDED HARDWARE KIT

# 415450 AND 417119

High Wind - 4 Fabra hood B #471321

DETAIL E

MALE RIB

FEMALE RIB

Step 12 – Lift HOOD ASSEMBLY onto HOOD BASE

Lift completed hood assembly onto the hood base and attach the hood assembly to the hood support angles, using

3/8 x 3/4 inch bolt with 3/8 inch Nyloc nut at each attachment point.

Step 13 – Tighten fasteners

Tighten all pivot bracket fasteners.

NOTE: There may be extra fasteners.

Figure 9

Fabra Hood • Form F10

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