Munters MWI Series User manual

1 Munters Corporation, July 2018 QM1115r0
Instruction Manual
MWI Munters Wall Inlet
Models: MWI4108B-6PK • MWI4113B-6PK •
MWI4408B-6PK • MWI4413B-6PK
MWI
Munters
Wall Inlet
6-pack

© Munters Corporation , July 2018
2QM1115r0
MWI Munters Wall Inlet
Instructions for Use and Maintenance
Thank You:
Thank you for purchasing a Munters MWI Munters Wall Inlet. 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.

3 Munters Corporation, July 2018 QM1115r0
Index
Chapters Page
1. Unpacking the Equipment 4
1.1 Parts List 4
1.2 Inlet Dimensions 5
2. Installation Instructions 6
3. Cabling 13

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1.1 Parts List
Unpacking the Equipment 1.
Before beginning installation, check the overall condition of the equipment. Remove packing materials, and examine all
components for signs of shipping damage. Any shipping damage is the customer's responsibility and should be reported
immediately to your freight carrier.
Each Box Includes Parts to build 6 Inlets:
Each MWI Inlet Requires:
ID Qty. Cat. No. Description
1 1 Left Side End Cap, PL
2 1 Right Side End Cap, PL
3 2 Top/Bottom Header, PL
4 1 Brush Seal
5 2 2¹⁄₂” x 3⁷⁄₈” L-Screw
6 1 Door, Curved, PL
7 1 ¹⁄₂” x ¹⁄₂” Mesh Guard, GAW
Optional Lift Kit (FA1500)
A 1 AC0211/AC0212 Azuma Bolt and Nut, PL
B 1 KS2601 6 GA. x 1.875” Open Eye Lag Screw, ZP
C 1 AC1054 Nylon Guide Link
D 1 AC1039 ³⁄₁₆” Dia. Cable Clamp, ZP
E 1 AC1009 ¹⁄₈”x36”L. Braided Polyester Lift Line
[A]
[B]
[C]
[D]
[E]

5© Munters Corporation, July 2018 QM1115r0
1.2 Inlet Dimensions


Door
Size Cat. No.
Nominal Size
A B C D E F Wall Opening
8” MWI4108 41” 8" 443⁄16” 111⁄8" 41⁄2” 97⁄8” 81⁄2"H. x 411⁄2"W.
MWI4408 44” 8" 473⁄16” 111⁄8” 41⁄2” 97⁄8” 81⁄2"H. x 441⁄2"W.
13” MWI4113 41" 13" 443⁄16" 161⁄8” 41⁄2” 147⁄8” 131⁄2”H. x 411⁄2”W.
MWI4413 44" 13" 473⁄16" 161⁄8” 41⁄2” 147⁄8" 131⁄2”H. x 441⁄2”W.
Unpacking the EquipmentChapter 1






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Installation Instructions 2.
Step 1
Insert (2) Top/Bottom Header pieces onto the Right Side End Cap. See Figure 1.
2.1 Inlet Assembly
Right Side End Cap
Top/Bottom Header (Top)
Top/Bottom Header (Bottom)
Step 2
Slide the Curved Door Hinge into the rounded opening in the Bottom Header. See Figure 2.
Figure 2
Figure 1
Top/Bottom Header (Bottom)
Top/Bottom Header (Top)
Curved Door
Curved Door Hinge
Rounded Opening

7 Munters Corporation, July 2018 QM1115r0
Installation InstructionsChapter 2
Step 3
Press the Brush Seal into the Slot in the Top Header. See Figure 3.
Figure 3
Top/Bottom Header (Top)
Brush Seal
Brush Seal
Slot in Top
Header
Step 4
Slide the Wire Mesh Guard into the Slot in the Top and Bottom Headers. See Figure 4.
Figure 4
Top/Bottom Header (Top) Wire Mesh Guard
Wire Mesh Guard
Top/Bottom Header (Top)

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Installation InstructionsChapter 2
Step 5
Secure the Left Side End Cap onto the Top and Bottom Headers using a Rubber Mallet. Use caution when doing
this and NEVER use a Framing Hammer. See Figure 5.
Figure 5
Partially Assembled Inlet
Rubber Mallet
Left Side End Cap

9© Munters Corporation, July 2018 QM1115r0
Step 6
Construct a framed opening to correct size according to Wall Opening listed in chart on Page 5. A minimum of
10” - 12” from ceiling to the top inside of framing is required. See Figure 6A and 6B.
2.2 Inlet Installation
Framed
Opening (W.)
Framed
Opening (H.)
Framed Opening (W.)
10" - 12" Min.
Framed
Opening
(H.)
Spacer
Frame Construction
Figure 6A
Post Construction
Figure 6B

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Framing
MWI Inlet
Step 7
Slide Inlet into framed opening from inside building. See Figure 7A and 7B.
Installation InstructionsChapter 2
Frame Construction
Figure 7A
Post Construction
Figure 7B
MWI Inlet

11 Munters Corporation, July 2018 QM1115r0
Installation InstructionsChapter 2
Step 8
Secure inlet into opening using (4) Polebarn Screws or other appropriate fasteners (not provided). Locate
screws in dimples in side flanges. DO NOT overtighten screws. See Figures 8A and 8B.
Dimples in Flanges
Polebarn Screws (not provided)
Frame Construction
Figure 8A
Post Construction
Figure 8B
Dimples in Flanges
Polebarn Screws
(not provided)

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Installation InstructionsChapter 2
Step 9
Secure bottom header of inlet using (1) Polebarn Screws or other appropriate fasteners (not provided) in the
center of the groove of the flange. Make sure the bottom flange is straight when fastening. Push up slightly on
center of top header ¹⁄₄” or 0.6cm and secure using (1) Polebarn Screw (not provided). DO NOT overtighten
screws. See Figures 9A and 9B.
Frame Construction
Figure 9A
Post Construction
Figure 9B
Polebarn Screws (not provided)
Groove in flange
Polebarn Screws (not provided)
Groove in flange

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Cabling 3.
Figure 10B
AC1039 Cable Clamps. Thread cable
through loop at end of spring and
fasten with (2) cable clamps.
AC1264 Single Pulley Bracket.
Recess pulley into ceiling in order
to keep cable in line with rod. Building Wall
Ceiling
AC1195 Baffl e return spring
Fasten spring into stud with lag
screw or bolt and nut.
Truss
AC1013 or
AC1044 Cable
SPRING TENSION:
with baffl e fully closed and cable pulled tight,
stretch spring 12" - 14" and fasten.
Step 10
Attach pulleys in line with screw hooks at each endwall. See Figure 10A and 10B.
Figure 10A
AC1264 Single Pulley
Bracket. Provide adequate
support.
Ceiling
Building Wall
WINCH/ ACTUATOR END
SPRING END

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CablingChapter 3
Step 11
Install Screw Hooks 2” above top flange of Inlet, in line with Lift Line hole in door. See Figures 11A and 11B.
For Post Frame Construction, also, install a screw hook on each post near ceiling. See Figure 11C.
Flange of Inlet
Screw Hook
Figure 11A Figure 11B
Figure 11C
Flange of Inlet
Screw Hook
2”
Screw Hook
Lift Line Hole
in Door

15© Munters Corporation, July 2018 QM1115r0
Figure 12B
CablingChapter 3
Step 12
Pull main rod or cable from winch or actuator through pulleys and screwhooks to weights or return spring on
opposite end wall. See Figures 10A, 10B, 12A and 12B. Be sure to coil approximately 1' of cable on winch.
Figure 12A
Main Rod
or Cable
Screw Hook
Main Rod or Cable
Screw Hook

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CablingChapter 3
Step 13
Put a Nylon Guide Link [C] (black) on each Screw Hook [B] that is directly above the center of each inlet.
Attach one Lift Line [E] to Main Cable using (1) Cable Clamp [D]. Lift line should be attached 14” back
from hook toward the winch end. Run each lift line through the adjacent Nylon Guide Link [C] and attach
Azuma Bolt and Nut [A]. See Figure 13A and 13B.
Cable Clamp [D]
Azuma Bolt & Nut [A]
Lift Line [E]
Eye Screw [B]
Nylon Guide Link [C]
Figure 13A
Note: If optional kit, Lift Package (FA1500) was purchased, hardware mentioned below in Step 13 is included. If
not purchased, hardware provided by others.

17© Munters Corporation, July 2018 QM1115r0
Figure 13B
CablingChapter 3
Cable Clamp [D]
Azuma Bolt & Nut [A]
Lift Line [E]
Eye Screw [B]
Nylon Guide Link [C]

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CablingChapter 3
Step 14
With the winch at its fully closed position, go back, check and readjust each baffle door tightly to inlet frame.
Use winch or baffle machine to open and close inlets a few times to make sure baffle moves smoothly and
each door remains even over the total length of house. See Figure 14.
Figure 14
To Weights or
Return Spring
Step 15
Locate (2) L-Screws ¹⁄₂” [1.2cm] above Top Header and evenly space across the inlet. Thread L-Screws in far
enough to hold the door in the close position. Make sure L-Screw does not interfere with the Lift Line or Main
Rod or Cable. See Figure 15A and 15B.
Figure 15A
L-Screw (provided)

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Figure 15B
CablingChapter 3
UNLATCHED POSITION
LATCHED POSITION
L-Screw (provided)
L-Screw (provided)

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Munters Europe AB, Isafjordsgatan 1, P.O. Box 1150, SE-164 26 Kista, Sweden. Phone [phone], Fax [phone].
Munters Corporation 2691 Ena Drive Lansing, MI 48917 U.S.A. Phone [phone], Fax [phone]
www.munters.us
Australia Munters Pty Limited, Phone [phone], Brazil Munters Brasil Industria e Comercio Ltda, Phone [phone], Canada/US Munters
Corporation Lansing, MI Phone [phone], China Munters Air Treatment Equipment (Beijing) Co. Ltd, Phone [phone], Denmark Munters A/S,
Phone [phone], India Munters India, Phone [phone], Indonesia Munters, Phone [phone], Italy Munters Italy S.p.A., Chiusavecchia,
Phone [phone], Japan Munters K.K., Phone [phone], Korea Munters Korea Co. Ltd., Phone [phone], Mexico Munters Mexico, Phone
[phone], Russia Munters AB, Phone [phone], Singapore Munters Pte Ltd., Phone [phone], South Africa and Sub-Sahara Countries
Munters (Pty) Ltd., Phone [phone], Spain Munters Spain S.A., Phone [phone], Sweden Munters AB, Phone [phone], Thailand
Munters Co. Ltd., Phone [phone], Turkey Munters Form Endüstri Sistemleri A.Ş, Phone [phone], USA Munters Corporation Lansing, MI Phone
[phone], Vietnam Munters Vietnam, Phone [phone], Export & Other countries Munters Italy S.p.A., Chiusavecchia Phone [phone]
MWI Inlets are Sold by Munters Corporation, Lansing, Michigan U.S.A. 1-800-227-2376