Greenheck WTHD series, WTHD-10, WTHD-8, WTHD-14, WTHD-12 Assembly And Installation Instructions Manual

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PN 472040

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Model WTHD

45° and 90° Weatherhood Accessory

Assembly and Installation Instructions

Assembly and Installation Instructions

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

Please read and save these instructions for future reference. Read carefully before attempting
assemble, install, operate or maintain the product described. Protect yourself and others by observing

to assemble, install, operate or maintain the product described. Protect yourself and others by
all safety information. Failure to comply with instructions could result in personal injury and/or property

observing all safety information. Failure to comply with instructions could result in personal injury
damage! Upon receiving unit, check for any damage that may have occurred during transit and report it

and/or property damage!
immediately to the shipper. Also verify that all accessory items are accounted for.

Weatherhood Parts List

Parts 45° 90°

1 Top Panel
2 Right Side Panel
3 Left Side Panel
4 Front Diagonal Panel
5 Front Panel
6 Bottom (Brace or Panel)
7 Birdscreen
8 Right Deflection Angle

9 Front Deflection Angle
10 Left Deflection Angle
11 Reinforcing Braces (sizes 54-72 only)
12 Fasteners

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Figure 1:
45° Weatherhood

Weatherhood Dimensions

Model A B C D

WTHD-8 111⁄4 (286) 101⁄2 (267) 1 (25) 131⁄4 (337)
WTHD-10 133⁄8 (340) 121⁄2 (318) 1 (25) 15 (381)
WTHD-12 155⁄8 (397) 141⁄2 (368) 11⁄4 (32) 161⁄2 (419)
WTHD-14 175⁄8 (448) 161⁄2 (419) 11⁄4 (32) 18 (457)
WTHD-16 195⁄8 (498) 181⁄2 (470) 11⁄4 (32) 191⁄2 (495)

WTHD-18 215⁄8 (549) 201⁄2 (521) 11⁄4 (32) 22 (559)
WTHD-20 235⁄8 (600) 221⁄2 (572) 11⁄4 (32) 25 (635)
WTHD-24 303⁄8 (772) 29 (737) 11⁄2 (38) 27 (686)
WTHD-30 361⁄2 (927) 35 (889) 11⁄2 (38) 291⁄4 (743)
WTHD-36 421⁄2 (1080) 41 (1041) 11⁄2 (38) 331⁄4 (845)

45° Weatherhood

WTHD-42 481⁄2 (1232) 47 (1194) 11⁄2 (38) 36 (914)
WTHD-48 543⁄4 (1391) 531⁄4 (1353) 15⁄8 (41) 405⁄8 (1032)
WTHD-54 607⁄8 (1546) 591⁄2 (1511) 11⁄2 (38) 443⁄4 (1137)
WTHD-60 67 (1702) 651⁄2 (1664) 11⁄2 (38) 48 (1219)
WTHD-72 791⁄2 (2019) 781⁄8 (1984) 11⁄4 (32) 531⁄4 (1353)

WTHD-8 12 (305) 105⁄8 (270) ¾ (19) 163⁄8 (416)
WTHD-10 14 (356) 123⁄4 (324) ¾ (19) 181⁄2 (470)
WTHD-12 163⁄8 (416) 151⁄2 (394) ¾ (19) 203⁄8 (518)
WTHD-14 183⁄8 (467) 171⁄2 (445) ¾ (19) 221⁄2 (572)
WTHD-16 203⁄8 (518) 191⁄2 (495) ¾ (19) 25 (635)
WTHD-18 223⁄8 (568) 211⁄2 (546) ¾ (19) 271⁄2 (699)
WTHD-20 243⁄8 (619) 231⁄2 (597) ¾ (19) 293⁄4 (756)
WTHD-24 313⁄4 (806) 285⁄8 (727) 11⁄2 (38) 36 (914)
WTHD-30 377⁄8 (962) 345⁄8 (879) 11⁄2 (38) 401⁄8 (1019)
WTHD-36 437⁄8 (1114) 405⁄8 (1032) 11⁄2 (38) 451⁄2 (1156)

90° Weatherhood

WTHD-42 497⁄8 (1267) 465⁄8 (1184) 11⁄2 (38) 491⁄4 (1251)
WTHD-48 56 (1422) 523⁄4 (1340) 11⁄2 (38) 551⁄2 (1410)
WTHD-54 621⁄4 (1581) 59 (1499) 11⁄2 (38) 611⁄8 (1553)
WTHD-60 683⁄8 (1737) 651⁄8 (1654) 11⁄2 (38) 661⁄2 (1689)
WTHD-72 807⁄8 (2054) 771⁄2 (1969) 11⁄2 (38) 721⁄8 (1832)

All dimensions shown in inches (millimeters).

Figure 2:
90° Weatherhood

Figures 3 – 5:
Weatherhood Dimensions

Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory

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45° Weatherhood Assembly

1. Refer to Figure 1 to identify parts for assembly.

2. Assemble front diagonal panel (4) to right side panel
(2) with 5/8 inch (16 mm) length sheet metal screws.
Overlap the ange on the front diagonal panel (4),
over the right side panel (2).

3. Repeat step 2 for left side panel (3).

4. As shown in Figure 6, assemble the top panel (1) to
the front diagonal panel (4) and side panels (2 & 3)
overlapping with the anges. Use 5/8 inch (16 mm)
length supplied sheet metal screws.

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4

Figure 6:
Assembly

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6

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90° Weatherhood Assembly

1. Refer to Figure 2 to identify parts for assembly.

2. Using #12 x 5/8 inch (16 mm) screws, attach side
panels (2 & 3) to front panel (5). Overlap the sides
with the ange of the front panel.

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5

Figure 8:
Assembly

3. Secure the front diagonal panel (4) using #12 x 5/8
inch (16 mm) screws to the front panel (5) and side
panels (2 & 3). Overlap the front panel (5) and side
panels (2 & 3) with anges of the front diagonal
panel (4).

5. Install the bottom panel (6) to the sides using the
5/8 inch (16 mm) length sheet metal screws. Place
the bottom panel (6) inside each anged side.

6. Refer to Figure 7 and slide the birdscreen into the
bottom of the assembled weatherhood through the
openings on the underside. Place birdscreen in the
frame and rest on the anges on each side. Fasten
screen to each side using the 5/8 inch
(16 mm) length sheet metal screws.

Swing birdscreen
down into position

Insert birdscreen
upward

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Figure 9

4. Attach top panel (1) to the front diagonal panel (4)
and side panels (2 & 3) using #12 x 5/8 inch (16 mm)
screws. Overlap the front diagonal (4) and side
panels (2 & 3) with the anges of the top panel (1).

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Birdscreen

Figure 7:
Insert Birdscreen

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Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory

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Figure 10

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5. Install bottom brace (6) to the inside of side panels
(2 & 3) using #12 x 5/8 inch (16 mm) screws.

Figure 11

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7. Slide birdscreen into the assembled weatherhood
through the notches on the underside of the side
panels (2 & 3). Work the screen in so the frame of
the screen rests on the anges of the front panel (5)
and side panels (2 & 3), and bottom brace (6).

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5a. For sizes 54-72 only: Install reinforcing braces

(11) to the inside of side panels (2 & 3) using #12 x
5/8 inch (16 mm) screws.

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Figure 12

6. Mount assembled weatherhood to the unit.

Figure 13:
Wall Housing

Figure 16:
Insert Birdscreen

8. Fasten front and side deectors (8-10) to the front
(5) and side panels (2 & 3) and birdscreen with #12 x
3/4 inch (19 mm) tek screws.

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9

8

Figure 17

Figure 14:
Wall Collar

Figure 15:
Wall Opening

Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory

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Typical Installation

W.O.

Wall

W.O.

W.O.

Wall

Wall

W.O.

W.O.

W.O.

Wall

Wall

Wall

DANGER

Always disconnect, lock and tag power
source before installing or servicing. Failure
to disconnect power source can result in re,
shock or serious injury.

1. Move weatherhood to desired location.

2. Weatherhood may be mounted directly to the
wall or to the fan wall housing or wall collar.

NOTE: Units mounted directly to the wall require
a different wall opening (W.O.) size than those
mounted in wall housings or wall collars.

DIRECT TO WALL

1. Cut an appropriate sized hole in the wall using
the recommended wall opening (W.O.).

2. For a weathertight seal, add silicone to the
ange prior to mounting.

3. Mount weatherhood directly to the wall using
corrosion-resistant fasteners.

MOUNT TO WALL HOUSING OR WALL
COLLAR

1. Cut an appropriate sized hole in the wall using
the recommended wall opening (W.O.).

2. For a weathertight seal, add silicone to the
ange prior to mounting.

3. Mount weatherhood to the wall housing or wall
collar using corrosion-resistant fasteners.

Figure 19: With Wall Housing

Figure 18: Direct To Wall

Recommended Wall Opening (W.O.)

Direct To Wall, see Figure 18

Model

WTHD-8 10½
WTHD-10 12½ (318)
WTHD-12 14½ (368)
WTHD-14 16½ (419)
WTHD-16 18½ (470)
WTHD-18 20½ (521)
WTHD-20 22½ (572)
WTHD-24 29 (737)
WTHD-30 35 (889)
WTHD-36 41 (1041)
WTHD-42 47 (1194)
WTHD-48 53¼ (1353)
WTHD-54 59½ (1511)
WTHD-60 65½ (1664)
WTHD-72 781⁄8 (1984)

All dimensions are in inches (millimeters).

45° and 90° Weatherhood

(Square)

(267)

Figure 20: With Wall Collar

Recommended Wall Opening (W.O.)

Wall Housing or Wall Collar, see Figures 19 & 20

WTHD-8 14¼
WTHD-10 16¼ (413)
WTHD-12 19¼ (489)
WTHD-14 21¼ (540)
WTHD-16 23¼ (591)
WTHD-18 25¼ (641)
WTHD-20 27¼ (692)
WTHD-24 33¾ (857)
WTHD-30 39¾ (1010)
WTHD-36 45¾ (1162)
WTHD-42 51¾ (1314)
WTHD-48 57¾ (1467)
WTHD-54 63¾ (1619)
WTHD-60 69¾ (1772)
WTHD-72 84¾ (2153)

All dimensions are in inches (millimeters).

(362)

MAINTENANCE

Disconnect and lockout power source
before cleaning. Clean weatherhood of any
accumulated dirt which would restrict airow.

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Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory

®

Damper Installation

BROWN

06/06/2008

1/1

BROWN

06/06/2008

1/1

To install an optional damper, refer to Figure 21.
Using a pneumatic or electric drill, run the self­drilling screws through the holes provided in the
side and bottom damper anges into the wall
housing. Check damper for freedom of movement.
If an optional damper guard or weatherhood is to
be installed, refer to the next section.

Damper Installed Inside

Wall Housing Guard Installation

Attach wall housing guard to wall housing using
the 1/4-20 x 3/4 thread cutting screw with washer.
Refer to Figure 23.

Wall Housing

Weatherhood
(Optional)

Damper

Damper Installed Outside

Wall Housing

Weatherhood
(Optional)

Damper

Figure 21

Damper Guard or Weatherhood
Installation

To install the damper guard, center guard over
damper and fasten to wall housing using the self­drilling screws. Refer to Figure 22.
To install the weatherhood, slide the top flange of
weatherhood under the flange of wall housing, see
Figure 21, and fasten with self-drilling screws.

Figure 23

Fit for Sidewall Propeller Fan
Accessories

Figure 24 reveals the correct t for sidewall
propeller fans after all optional accessories have
been assembled and installed.

Damper Guard

Weatherhood

Figure 22

Wall Housing

Figure 24:
Sidewall Propeller Fan Accessories

Sidewall Propeller Fans • 45° and 90° Weatherhood Accessory

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®

Warranty

Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the purchase date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.

Greenheck Sidewall Propeller Fans Catalog provides additional
information describing the equipment, fan performance, available
accessories, and specication data.

Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website: www.greenheck.com

6 472040 • Model 45° and 90° Weatherhood Accessory, Rev. 1, July 2008 Copyright 2008 © Greenheck Fan Corp

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.