Munters WM36 K CB Series User manual

1© Munters Corporation, August 2021 QM1231r10
Instruction Manual
WM Fiberglass Wall Mount Fan
with Damper Door - 1-Pack Quick Kit
Models: WM36xKxCB
WM36K
Wall Mount Fan
with Damper Door
1-Pack Quick Kit

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Thank You:
Thank you for purchasing a Munters Wall Mount Fan with Damper. Munters equipment is designed to be the
highest performing, highest quality equipment you can buy. With the proper installation and maintenance it will
provide many years of service.
Please Note:
To achieve maximum performance and insure long life from your Munters product it is essential that it be installed
and maintained properly. Please read all instructions carefully before beginning installation.
Warranty:
For Warranty claims information see the “Warranty Claims and Return Policy” form QM1021 available from the
Munters Corporation office at 1-800-227-2376 or by e-mail at [email protected].
Conditions and Limitations:
• Products and Systems involved in a warranty claim under the “Warranty Claims and Return Policy” shall have
been properly installed, maintained and operated under competent supervision, according to the instructions
provided by Munters Corporation.
• Malfunction or failure resulting from misuse, abuse, negligence, alteration, accident or lack of proper installation
or maintenance shall not be considered a defect under the Warranty.
WM36K Fiberglass Wall Mount Fan with Damper
Instructions for Use and Maintenance

3© Munters Corporation, August 2021 QM1231r10
Index
Chapters Page
1. Unpacking the Equipment 4
1.1 Parts List 4
1.2 Fan Dimensions 6
1.3 Tools for Installation 6
2. Installation Instructions 7
2.1 Wall Framing 7
2.2 Fan Assembly 8
2.3 Cone Installation 12
2.4 Motor Mounting 16
3. Electrical Wiring 22
3.1 Recommended Wiring 23
4.Operation 24
5.Maintenance 25
6.Winterizing 27
6.1 Winterizing 27
6.2 Winter Weather Protection 27
7.Troubleshooting 28
8. Exploded View and Parts List 29-31

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1.1 Parts List
Unpacking the Equipment 1.
Each Crate Includes
1 – 36” Orifice Panel, Fiberglass Fan, Sub-Assembly
1 – Motor
1 – Drip Shield, AL
4 – Cone Sections, PL
1 – Cone Guard
1 – Inlet Guard
4 – Cone/Strut Mounting Brackets, GZ
1 – Motor Mount Stiffener Bracket, GZ
1 – Bulk Parts Package (BK1149)
BK1149 – Bulk Parts Package for WM36K
1 – Motor Base Bracket, CTD-GZ
1 – Belt Tensioner Bracket, CTD-GZ
1 – Motor Sheave, C.I.
1 – V-Belt, A-Section
1 – 3” Idler Pulley, A-Section C.I., Blue
1 – Rotary Tensioner Arm, AL
1 – Hardware Package (HP1177)
1 – Coated Cable with Ferrule, 100”L.

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Unpacking the EquipmentChapter 1
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[J]
[K]
[L]
[M]
[N]
HP1177 – Hardware Package for 1 – WM36K
ID Qty. Cat. No. Description
[A] 2 KW3011 5⁄16” x 1¼”O.D. Flat Washer, SS
[B] 1 KS1931 M10-1.5 x 25mm Hex Bolt, ZP
[C] 1 KW3509 10mm Splitlock Washer, ZP
[D] 16 KS1007 5⁄16” x 1.25” Hex Head Bolts, SS
[E] 4 KS1029 5⁄16” x 1.75” Hex Head Bolts, SS
[F] 3 KS1075 5⁄16” x 2.75” Hex Head Bolts, SS
[G] 31 KN0704 5⁄16” SRTD Flange Nuts, SS
[H] 1 KS2463 1⁄4” x1.5” HEX Lag Screw,ZP
[J] 1 AC0211 & AC0212 Azuma Bolt & Nut, Blue PL
[K] 1 KS1046 M10-1.5 x 50mm Hex bolt, ZP
[L] 8 FH1968 1-Hole Pivoting Shutter Clip, BLK PL
[M] 2 AC1381 1⁄8” Dia. Cable Clamp, ZP
[N] 2 KX1158 Hole Plug, 0.73”-0.76” Dia., BLK PL

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1.2 Fan Dimensions
Fan Specifications: 60Hz shown (50Hz available)
Power: 115/230 VAC* or 208-230/460 VAC
Phase: 1 or 3
*Available voltages vary depending on HP
Unpacking the EquipmentChapter 1
1.3 TOOLS REQUIRED FOR INSTALLATION
10mm [3⁄8”] Socket
13mm [½”] Socket
17mm [11⁄16”] Socket or Wrench
27mm [11⁄16”] Wrench
7⁄16” Socket
Phillips Screwdriver, #3 Size
5⁄32” Hex Wrench
Wire Cutting Pliers
Dimensions:
Size A B C* D - Dia. E F Wall Openings
36” 48”W. x 48”H. 40” 59⁄16”48
3⁄8”2”1 13⁄16”44 1⁄2”W. x 441⁄2”H.
Wall Opening (W.O.)
D - Dia.
F
A
AB
Guard
E
C
*Dimension varies depending on wall construction and motor configuration.

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2.1 Wall Framing
Step 1
Construct framed opening to correct size according to the Wall Opening listed in Chart A below.
See Figure 1A and 1B. When installing exterior sheet metal before fan, leave 2” of the framing exposed on all
sides so the orifice can mount flush to the frame.
Installation Instructions 2.
Minimum Spacing
'Z'
Chart A
Wall Opening
(W. x H.)
Fan Dia.
12” recommended; 3½” minimum
36” 44½” W. x 44½” H.
Center To Center
Dimension
48” Minimum
Figure 1B 4 x 4 Post Construction - Elevation View
Ceiling
Framing
H
(See chart A)
12"
W
(See chart A)
See minimum
spacing notes in
Chart A
Z
2 x 8 Header boards
4 x 4 or
4 x 6 Posts
2 x 4
Framing
2 x 8 Banner boards
Ceiling
4 x 4 or 4 x 6 Posts
W
(See chart A)
H
(See chart A)
Figure 1A Frame Construction
441⁄2”W.
Top View
48”W. O.C.
W x H Wall Opening
Sheet Metal Opening
Stud Wall

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Step 2A
Remove the BK1149 and Motor from the front of the crate. See Figure 2A.
Figure 2A
Installation InstructionsChapter 2
Step 2B
Remove all the other loose parts from the back of the crate. See Figure 2B.
Figure 2B
BK1149
Motor
The fan can either be installed on the wall before the drive system is installed or
the drive system can be installed while the fan is in the crate.
2.2 Fan Assembly

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Step 3
Carefully turn the crate onto its side, so that the drain holes in the orifice are at the bottom. See Figure 3.
Drain Holes
Step 4
Attach the Motor Base Bracket and the Belt Tensioner Bracket to the Tube Strut using (3) Long Bolts [F], (2)
Washers [A] and (3) Nuts [G]. See Figure 4.
Figure 3
Figure 4
Installation InstructionsChapter 2
Bolt [F]
Washer [A]
Nuts [G]
Motor Base Bracket
Belt Tensioner Bracket

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Step 5
Attach the 3” Idler Pulley to the Tensioner Arm using Bolt [K]. Then attach the Tensioner/Pulley Assembly to
the Tensioner Bracket using Bolt [B] and Splitlock Washer [C]. Finger tighten only at this time. See Figure 5.
Figure 5
Installation InstructionsChapter 2
Bolt [B]
Splitlock Washer [C]
Tensioner Pulley
Tensioner Arm
Bolt [K]
Step 6
Attach Drip Shield to bottom of framed opening using (3) Barn Screws (Not Provided). See Figure 6A and 6B. If
a 4” wall is used a support board must be installed as shown in Figure 6B. Be sure not to deform Drip Shield when
installing screws.
Figure 6A
Barn Screw
(Not Provided)
Drip Shield
Figure 6B
Barn Screw
(Not Provided)
Drip Shield Drip Shield
Barn Screw
(Not Provided)
Support board

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Installation InstructionsChapter 2
Step 7
Locate Drain holes in Orifice Panel. This is bottom of Fan. Set bottom edge of fan on Drip Shield ledge
and center panel on opening. Secure Fan to wall using (16) Barn Screws (Not Provided).
See Figure 7A and 7B.
Figure 7A
Step 8
Find Coated Cable and insert end opposite ferrule into small hole in upper plate of Main Frame. Pull
it through until ferrule stops at plate. See Figure 8.
Figure 8
Hole in Main Frame
Ferrule
Figure 7B
Latch Pin Orifice panel
Barn Screw (Not Provided)
Drip Shield Ledge

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Step 9
Place all 4 cone sections on a flat surface with tabs from one facing slots of the next. See Figure 9A.
Curl up tab end of first cone section and insert tabs up into slots in the next cone section. A mallet may
be needed to seat slots over tabs completely. See Figure 9B. Repeat this until all 4 cone sections are
connected and laying flat.
Installation InstructionsChapter 2
Step 10A
Fasten each of the joints in the single outer hole using (1) Short Bolt [D] and Nut [G], with the nut on the
side with the tabs. At the inner pair of holes of each joint attach (1) Cone Support Bracket to the inner
hole using (1) Short Bolt [D] and Nut [G] with the bolt head on the side with the tabs. See Figure 10A.
Figure 9A
Figure 10A
Nut [G]
Figure 9B
Outer Hole Short Bolt [D]
Short Bolt [D]
Inner holes
Nut [G]
Cone Support Bracket
2.3 Cone Installation

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Installation InstructionsChapter 2
Step 10B
Stand cone sections on end and curl ends around to form cone with Cone Support Bracket on outside and tabs
on inside. Insert remaining tabs into slots so tabs are inside cone and fasten final joint using (1) Short Bolt [D]
and Nut [G], with nut on inside of cone. At the inner pair of holes attach (1) Cone Support Bracket to the inner
hole using (1) Short Bolt [D] and Nut [G] with bolt head on inside of cone. See Figure 10B.
Short Bolt [D]
Cone Support Bracket
Nut [G]
Short Bolt [D]
Nut [G]
Figure 10B

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Installation InstructionsChapter 2
Figure 11A
Step 11A
Install cone onto fan by putting top of cone over top of fan. The hole in tab of one cone section should
slide down over the Frame Pin in the Main Frame assembly. Allow remainder of cone to slide over orifice
panel making sure Cone Support Brackets remain on outside of cone. See Figure 11A.
Frame Pin
Hole in Tab of Cone Section
Step 11B
Place end of Cone Support Bracket with slot over bolt holding Cone/Strut Mounting Bracket to the orifice
and secure with Nut [G]. See Figure 11B.Secure Cone to Fan installing Medium Bolt [E] through the
remaining hole in the Cone Support Bracket and fastening with Nut [G]. A long screwdriver may be
needed to help align the holes through Cone Support Bracket, Cone, Main Frame and Orifice. Repeat
process for all 4 Cone Support Brackets. See Figure 11B.
Figure 11B
Nut [G]
Medium Bolt [E]
Nut [G]
Use this hole for WM36F
Use this hole for WM54F

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Installation InstructionsChapter 2
Step 12
Insert guard into cone with the eyelets facing you. Install eyelets over bolts already installed in cone and fasten
with Nut [G]. Secure remaining eyelets using Short Bolt [D] and Nut [G]. See Figure 12.
Nut [G]
Nut [G]
Previously installed - Bolt and Nut
Step 13
Loop Coated Cable that was installed in a previous step, around the lower, middle joint in guard and fasten to
itself with Azuma Bolt & Nut [J]. Make sure cable is pulled snug. See Figure 13.
Figure 12
Figure 13
Azuma Bolt & Nut [J]
Short Bolt [D]
Coated Cable
Note:
When installing cable in
temperatures BELOW 60°F,
leave cable slightly slack
(do not overtighten).

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Installation InstructionsChapter 2
Motor Key
Motor
Motor Sheave
Step 15
Find the Key provided with the Motor and place it in the Keyway on the motor shaft. Place the Motor
Sheave on the Motor shaft with the hub facing towards the motor. See Figure 15. ONLY tighten the set
screw enough to hold the Sheave in place at this time. See Figure 15.
Figure 15
2.4 Motor Mounting
Note:
When wiring motor, check rotation of propeller.
Internal wiring of motor may need to be changed
to assure proper rotation of propeller.
Step 14
If Fans are to be installed 60” O.C., cut the 3 o’clock and 9 o’clock guard wire in the position shown. Push
the side of the cone in as far as possible and fasten the cut guard wire to the attached guard wire using
Clamp [M]. See Figure 14.
Cut Guard Wire Here
Clamp [M]
Figure 14

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Installation InstructionsChapter 2
Step 16
Set Motor on Motor Bracket so Motor base rests against lower Motor Bracket flange. Align middle and front
slots in Motor base with holes in Motor Bracket. See Figure 16.
Step 17A
Secure Motor to Motor Bracket and Motor Bracket Stiffener using (4) Short Bolts [D] and Nuts [G]. The
rear upper bolt is where Motor Bracket Stiffener is attached. See Figure 17A.
Figure 16
Stiffener
Short Bolts [D]
Nuts [G]
Figure 17A
Holes in Motor Bracket
Front and Middle Slots
Lower Motor Bracket Flange

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Step 18
Use a straight edge or level to check alignment of the
Propeller Sheave, Tensioner Pulley and the Motor Sheave.
If needed, adjust position of Motor Sheave so the 3 pulleys
line up. Once Motor Sheave is aligned tighten set screw to
75 in-lbs [9 N-m] torque. See Figure 18.
Figure 18
Level
Motor Sheave
Tensioner Pulley
Propeller Sheave
Installation InstructionsChapter 2
Figure 17B
Stiffener
Step 17B
Using channel locks and/or a hammer twist the Motor Bracket Stiffener so that the holes in the bracket lay
flat against the framing. Then secure the bracket to the framing using (1) Lag Screw [H]. See Figure 17B.
Framing
Lag Screw [H]

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Installation InstructionsChapter 2
Step 19A
Slide V-belt over Propeller and install by wrapping it around 2 smaller pulleys and starting it over
larger Sheave. Continue rolling it onto the larger Sheave until it fits into groove. See Figure 19A.
If desired the 2 drain holes in the Orifice Panel can be plugged using (2) Hole Plugs [NN]
Figure 19A
Drain Holes
Step 19B
To adjust belt tensioner to proper setting, loosen 10mm bolt (using 17mm end wrench) to allow tensioner arm
to rotate. Working from inlet/motor side of fan, place a 27mm (11⁄16”) wrench onto the hex on the tensioner.
Turn wrench clockwise until the single mark on base of belt tensioner is aligned with Mark 3 on the tensioner
arm. Hold at this setting and tighten the 10mm bolt to 40 ft.lbs. [54 N-m] torque. See Figure 19B.
Figure 19B
Mark 3 on Tensioner Arm
Hex on Tensioner Arm
10mm Bolt
Single Mark on Base

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Installation InstructionsChapter 2
Step 20A
Cut a section of the inlet guard out to fit over the motor as shown below for the appropriate fan. When cutting
the guard wires make sure to cut them as close to the other wires as possible. See Figure 20A.
Figure 20A
10” 12”
12”
4”
48”
48”