Greenheck LSF Series User manual

1
Model LSF Assembly
®
®
Assembly Instructions
Document 458066
Model LSF Assembly
NOTE
Rooftop assembly is recommended. Fan should be
assembled on previously mounted roof curb.
How to use this manual
Read and save these instructions. This manual is designed to assist with the assembly of Greenheck Model LSF
Louvered Supply Fans. It contains detailed assembly instructions, parts and hardware lists, as well as step-by-
step renderings.
Complete descriptions and renderings of all parts and hardware items can be found on pages 2-4. Procedures
described in this manual should be followed in the order they appear.
Receiving and Handling
Upon receiving the equipment, check for both obvious and hidden damage. If damage is found, record all
necessary information on the bill of lading and file a claim with the final carrier. Check to be sure that all parts of
the shipment, including accessories and hardware, are present.

2Model LSF Assembly ®
LSF 24, 27 AND 30
6
5
4
1
3
2
7
8
9
PARTS LIST
Item No. Description Quantity
1 Louver Assembly, End 2
2 Louver Assembly, Side 2
3 Base Panel 4
4 Filters See page 12
5 Blower Assembly
6 Duct Adapter Panel (shown upside down) 4
7 Hood Panel, Center 1
8 Reinforcing Angle for Base Panel 2
9 Gusset 4
Hardware Package #821385 See page 4

3
Model LSF Assembly
®
LSF 33 AND 36
PARTS LIST
Item No. Description Quantity
1 Louver Assembly, End 2
2 Louver Assembly, Side, with Spacer 2
3 Base Panel 4
4 Filters See page 12
5 Blower Assembly
6 Duct Adapter Panel (shown upside down) 4
7 Hood Panel, Center 1
8 Hood Panel, Side 2
9 Reinforcing Angle for Base Panel 2
10 Gusset 4
11 Hood Support Rail 2
Hardware Package #821246 See page 4
6
10 9
541
3
2
78
11

4Model LSF Assembly ®
HARDWARE PACKAGE AND FASTENER DETAILS
LSF 24 - 30
Hardware
Package
#821385
LSF 33 - 36
Hardware
Package
#821246
Part
Number Item Description Quantity
415006 Sheet Metal Screw, Indented Hex Washer, Zinc Plated, #14 x 1-1/2 inch 6 6
415203 Sheet Metal Screw, Phillips Oval Head, Stainless Steel, #10 x 1-1/4 inch 96 96
415439 Sheet Metal Screw, Indented Hex Washer, Stainless Steel, #12 x 5/8 inch 70 70
415041 Thread Cutting Screw, Indented Hex Washer Head, Zinc Plated, 5/16 inch - 18 x 1 inch 21 33
415005 Thread Cutting Screw, Indented Hex Washer Head, Zinc Plated, 3/8 inch - 16 x 1 inch 2 2
415225 Thread Cutting Screw, Indented Hex Washer Head, Zinc Plated, 5/16 inch - 18 x 5/8 inch 0 8
415729 Machine Screw, Phillips Truss Head, Stainless Steel, 1/4 inch - 20 x 5/8 inch 10 0
415486 Serrated Flange Fastener (Whiz Lock Screw), Zinc Plated, 5/16 inch - 18 x 1 inch 8 8
415837 Lock Washer, Stainless Steel, 1/4 inch 10 0
415457 Nut, Serrated, Zinc Plated, 3/8 inch - 16 2 2
415456 Nut, Zinc Plated, 5/16 inch - 18 8 8
415099 Nut, Stainless Steel, 1/4 inch - 20 10 0
370022 Grommet, Neoprene 1 1
416097 Pin, Cotter (not shown) 4 0
506023 Louver Bracket (not shown) 4 0
Note: Depending on unit size, all hardware may not be used. Drawing is not to scale.
415006 415203 415439 415041
415005 415225 415729 415486 415837
415457 415456 415099 370022

5
Model LSF Assembly
®
Step 1
Locate and identify parts as listed on Parts List
and Hardware Package and Fastener Details
List on pages 2 and 3. See exploded view for
assistance in identifying parts.
Step 2
Place duct adapter panels upside down so that
the screws can be inserted into the predrilled
holes in the flanges. Fasten the panels together
as shown using the #12 x 5/8 inch stainless sheet
metal screws.
Step 3
Install the neoprene grommet in wiring hole.
Step 4
Flip over the duct adapter panels and apply
3/4x3/4 inch gray adhesive-backed foam tape
to top of duct adapter around the edge of the
opening at the proper location; noting the size of
the unit. (The roll of foam tape will be attached to
the blower assembly).
Sizes 24, 27, 30 – flush with edge, all around
Size 33 – flush with edge on long sides, 3/4 inch
away from edge on short sides
Size 36 – flush with edge on long sides, 1-1/4 inch
away on short sides
Step 5
Mount assembled duct adapter onto preexisting
roof curb. Align the adapter squarely on the curb
and nail through the prepunched mounting holes
(nails not provided).
Step 6
Place and align the blower assembly on the duct
adapter—being sure to place the motor near the
wiring hole in the duct adapter. NOTE: Blower
frame will extend 3/4 inch over each end of the
curb. Make sure the frame is centered on the curb.
Step 7
Using the 1/4 inch x 1-1/2 inch lag bolts, fasten
the blower assembly to the curb aligning the
prepunched holes in the blower assembly and
duct adapter.
Step 8
Locate the two (2) wood shipping blocks between
blower assembly frame and isolation base.
Remove and discard the hardware and the blocks.
Step 9
To begin installation of the base panels, remove
the lifting lugs. Save the lifting lugs and mounting
hardware. They will be reused in Step 10.

6Model LSF Assembly ®
Step 10
Set one (1) end panel in place on the end of the
support frame.
Replace the lifting lugs, reusing the hardware
to fasten the panel in place. Do not tighten the
hardware completely until instructed to do so. Use
a 3/8 inch - 16x1 inch thread cutting screw in the
center of the end base panel between the lifting
lugs. Do not tighten completely Repeat Step 10 for
the other end base panel.
Step 11
Install reinforcing angle on the two (2) side base
panels. Use #12 x 5/8 inch stainless sheet metal
screws for each reinforcing angle.
Step 12
Place the side base panel with reinforcing angle
on the duct adapter and fasten at both ends using
#12 x 5/8 inch stainless metal screws along both
vertical edges. Repeat Step 12 for the other side
base panel.
Step 13
Install corner gussets on the surface of the duct
adapter and fasten to the bottom corners of the
base panels, using four (4) #12 x 5/8 inch stainless
sheet metal screws in each gusset.
Step 14
Tighten the two (2) bolts in each lifting lug as well
as the one in the center of the base panel that
were not tightened in Step 10.

7
Model LSF Assembly
®
Step 15
Set one (1) section of the end louver assemblies
(without a cover) in place on an end base panel
(panels with lifting lugs). Fasten posts on louver
assemblies with 5/16 inch - 18x1 inch thread
cutting screws, using the prepunched holes in the
posts. Repeat Step 15 for opposite louver end
assembly.
LSF Sizes 24–30 continue on page 8
LSF Sizes 33–36 continue on page 10
STOP

8Model LSF Assembly ®
LSF Sizes 24, 27 and 30
Step 16
Set in place one (1) side louver assembly (with
hood panel). Use 5/16 inch - 18 x 1 inch thread
cutting screws to fasten posts to base panels as
in Step 15. Using #12 x 5/8 inch stainless sheet
metal screws, fasten the corner posts of the
adjoining sides together at the top and bottom.
Use four (4) screws per louver assembly. Repeat
Step 16 for opposite side louver assembly.
Step 17
Fasten mitered louver corners with #10 x 1-1/4 inch
sheet metal screws.
Step 18
Slide the filters into their racks using the diagram
on page 12 as a guide for proper size, location and
orientation of the filters.

9
Model LSF Assembly
®
LSF Sizes 24, 27 and 30
Step 19
Set center hood cover on top of louver
assemblies. Slowly close the side hood panels,
one at a time, adjusting the center section
slightly—if necessary—to attain a proper
alignment of all three hood panels.
Step 20
To secure the center hood, locate the center hood
latch. Mark where the slot meets the top louver.
Drill a 9/64 inch hole and insert one (1) sheet metal
screw through center hood latch and top louver.
Repeat Step 20 for opposite side of center hood.
Step 21
Set in place hasp bracket through hood latch.
Hold hasp bracket in place and swing hood panel
open. Mark hasp hole locations on top louver
and drill 1/4 inch holes at each mark. Insert
one (1)1/4inch - 20 x 1/2 inch machine screw
through the hasp bracket and top louver. Fasten
by attaching one (1) 1/4 inch lock washer and one
(1)1/4 inch x 20 hex nut to each screw. Follow the
same procedure for the other end of the hood.
Repeat Step 21 for the opposite side hood.
Step 22
Close side hood panels and insert rod retainer pin
through louver bracket to secure side hood panel.
Join side hoods to center hood along hood seams
using four (4) 5/16 inch - 18 x 1 inch serrated
flange fasteners and four (4) 5/16 inch - 18 nuts on
each flange.
Step 23
Using prepunched mounting holes in base panels,
fasten unit to roof curb nailer (fasteners not
provided).
Fasten
Here
Completed LSF
Size 24, 27 or 30

10 Model LSF Assembly ®
LSF Sizes 33 and 36
Step 16
Set in place one (1) side louver assembly with
spacer. Use 5/16 inch - 18 x 1 inch thread
cutting screws to fasten posts to base panels
as in Step 16. Using #12 x 5/8 inch sheet metal
screws, fasten louver spacer to corner post of
end assembly at the top and bottom. Use four
(4)screws per louver assembly. Repeat Step 16
for opposite side louver assembly.
Step 17
Fasten mitered louver corners with #10 x 1-1/4 inch
sheet metal screws.
Step 18
Slide the filters into their racks using the diagram
on page 12 as a guide for proper size, location and
orientation of the filters.

11
Model LSF Assembly
®
LSF Sizes 33 and 26
Step 19
Set in place hood support rails over center posts,
leaving one (1) post between for spacing. Use
5/16 inch - 18 x 5/8 inch thread cutting screws
to fasten hood support rails to center posts; four
(4)screws per center post.
Step 22
Using prepunched mounting holes in base panels,
fasten unit to roof curb nailer (fasteners not
provided).
Step 20
Set center hood cover on top of hood support
rails. Align slots in center hood to holes in hood
support rails.
Step 21
Set side hood cover panels on top of unit, one
on each side of center hood. Use thread cutting
screws to fasten hood panels to corner mount
brackets and hood support rails. Join side hoods
to center hood along hood seams using four
(4)5/16 inch - 18 x 1 inch serrated flange fasteners
and four (4) 5/16 inch - 18 nuts on each flange.
Fasten
Here

®
Phone: [phone] • Fax: [phone] • E-mail: [email protected] • Website: www.greenheck.com
12 458066 • LSF Assembly, Rev. 3, March 2020 Copyright 2020 © Greenheck Fan Corporation
®
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature
section of the website at Greenheck.com/Resources/Library/Literature.
Greenheck Model LSF catalog provides additional information
describing the equipment, fan performance, available
accessories, and specification data.
Our Commitment
AMCA Publication 410-96, Safety Practices for Users and
Installers of Industrial and Commercial Fans, provides
additional safety information. This publication can be obtained
from AMCA International, Inc. at www.amca.org.
LSF Filter Sizes and Quantities
Size 24 Size 27 Size 30
16 x 20 16 x 20 16 x 20 16 x 20 16 x 25 16 x 20 16 x 25 16 x 25 16 x 25
16 x 20 16 x 20 16 x 20 16 x 20 16 x 25 16 x 20 20 x 25 20 x 25 20 x 25
Size 33 Size 36
20 x 20 20 x 20 20 x 20 20 x 20 20 x 20 20 x 25 20 x 25 20 x 20
20 x 20 20 x 20 20 x 20 20 x 20 25 x 20 25 x 25 25 x 25 25 x 20
Unit Size
Filter
Size 24 27 30 33 36
16 x 20 24 16
20 x 20 32 8
20 x 25 12 16
16 x 25 8 12
25 x 25 8
All sides are identical.