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IS295-20H  

J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com 

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MAGNUM 58” EXHAUST FAN

J&D Mfg. warrants this products is free from defects in materials and workmanship under 

normal use for the period of three years from date of purchase. Our warranty does not cover 

ordinary wear and tear. J&D Mfg can repair or replace at our option, any product or part of 

the product that is found to be defective.  Our warranty applies to materials only and does not 

include return freight, delivery, loss or damage to personal property, cost of removal or 

installation, any incidental or consequential damages or labor. This warranty does not apply to 

products which are misused, abused, altered, improperly installed or subject to negligence. All 

warranties must be approved through our warranty department. The original purchaser must 

present a copy of the invoice for the defective product. 

Please read over ALL instructions carefully before you begin. 

If you have any questions please call your local dealer, or contact J&D Manufacturing at 1-800-998-2398. 

RECOMMENDED TOOLS FOR INSTALLATION AND ASSEMBLY  

(NOT PROVIDED)

WARRANTY

INSTALLATION

- Safety Glasses
- Socket Wrench
- 1/2” Socket
- 1/4” Nut Driver
- 1/2” Wrench 

- 3/8” Wrench
- Impact Driver 
- Drill 
- 1/8” Drill Bit
- 13/64” Drill Bit 

- 10 ft-lb Torque Wrench
- 23 ft-lbs Torque Wrench
- Cutting Device 

  (for Rubber Gasket) 

(4) Venturi

Sections

Rubber

Gasket

(4) Motor

Brackets

Motor

Prop

Metal

Damper

Door Rod 

Housing

Side Panels

(2) Damper

Doors

(4) Housing

Corner Caps

(8) Cone

Sections

(2) Front

Guards

(2) Rear

Guards

PARTS LEGEND

Summary of Contents for MAGNUM 58"

Page 1: ...ich are misused abused altered improperly installed or subject to negligence All warranties must be approved through our warranty department The original purchaser must present a copy of the invoice for the defective product Please read over ALL instructions carefully before you begin If you have any questions please call your local dealer or contact J D Manufacturing at 1 800 998 2398 RECOMMENDED...

Page 2: ... Serrated Flange Nuts 10 24 1 1 4 x 2 Machine Key 4 SS Damper Door Striker Plates 4 Damper Door Magnets 4 1 2 OD 1 8 ID Nylon Spacers 5 1 OD 38 ID Nylon Spacer 2 SS Damper Door Springs 1 Front Guard Plate Hub w Hardware 4 11 Cable Ties Bag 6 Cone Guard 8 5 16 18 x 1 Bolts 8 5 16 18 Serrated Flange Nuts Bag 7 Mounting Screws 4 12 11 x 3 Screws Use 3 Phillips Bit from Bag 1 Bag 8 Motor Guard 10 12 1...

Page 3: ...venturi sections Tighten only the bolts and nuts securing venturi sections Holding the motor brackets up so the back side is flush to the outside of the venturi sections tighten the bolts and nuts securing motor mounts and venturi sections 2 Eye Bolt Installation Stand the housing assembly up Locate the dimple marks on the exterior of the venturi next to the motor brackets With a 13 64 drill bit d...

Page 4: ...g each other Where the eyebolts are installed is now considered the TOP of the fan 4 Housing Side Panel Assembly Starting on a corner and with the front and back venturi section channels inserted into the grooves of the housing side panel Slide the housing side panel across the top until it hits the center seam of the assembled venturi sections Lift up on the center of the housing side panel and c...

Page 5: ...d together Repeat until all four housing corner caps have been installed 6 Motor Installation NOTE 2 person lift is recommended for handling of 105lb motor Using the pallet the fan came on place the motor in the center between the pallet slats with the shaft facing up Place housing over motor with the housings eyebolts aligning with motor wiring ports as shown below Use scrap wood 2x4 s or other i...

Page 6: ...reads Once all motor mounting hardware has been hand started torque the bolts to 23 ft lbs using hand tools only 8 Prop Installation Insert the 1 4 x 2 Machine Key from Bag 9 Misc Hardware into the key notch on the motor shaft Slide prop onto the keyed motor shaft until flush with end of motor shaft Secure prop by tightening the 2 set screws located on underside of prop to 10 ft lbs Rotate the bla...

Page 7: ... to the center and flush to the interior of the venturi stick it to the housing Continue to stick the gasket around the entire circumference of the housing opening When you are back to the starting point cut off any excess gasket Stick it down lining up the two ends of the gaskets Go back and press down on the flat part of the gasket all the way around the housing to make sure it is stuck down 10 ...

Page 8: ...e Installation Using 2 people lift the cone assembly onto the housing assembly With J D logoed cone sections facing the sides not the top and bottom line up the edge of one of the cone pieces to the center line of the housing Make sure the raised part of the rubber gasket is inside the cone assembly and not underneath it or crushed anywhere Using the included 3 Phillips Bit from Bag 1 Tools and 1 ...

Page 9: ...er door rod into the hole in the top of the cone by the eyebolts Before securing the bottom of the metal damper door rod slide on 2 1 OD 38 ID Nylon Spacers from Bag 9 Misc Hardware then insert the bottom of the damper door rod into bottom cone panel section adjacent to the one removed See below Once damper door is installed reinstall cone panel and secure to housing 17 IS295 20H J D Manufacturing...

Page 10: ...the eyebolts Swing the loose end of the damper door spring over to the dimpled area on the damper door edge and mark which dimple is closest to the spring end that give the least amount of tension Using a 1 8 drill bit drill through just the first layer of the door DO NOT DRILL ALL THE WAY THROUGH DOOR Hook end of damper door spring through hole NOTE Test damper door spring tension if damper doors...

Page 11: ... shown below 20 Rear Guards Installation Using the included 3 Phillips Bit from Bag 1 Tools and 5 12 11 x 5 8 Screws from Bag 8 Motor Guard per guard secure rear guard sections to housing as shown below Secure rear guard sections to each other using 4 11 Cable Ties from Bag 9 Misc Hardware 21 IS295 20H J D Manufacturing 6200 Hwy 12 Eau Claire WI 54701 1 800 998 2398 www jdmfg com Page 11 12 Top of...

Page 12: ...Black Green Motor to Power L1 L2 L3 Ground DISCONNECT POWER BEFORE INSTALLING OR SERVICING ALL ELECTRICAL WORK SHOULD BE COMPLETED BY QUALIFIED PERSONNEL AND MEET NATIONAL NEC REGIONAL AND LOCAL ELECTRIC CODES White w Green Stripe Orange w White Stripe Motor to Control 10V OUT 0 10V IN Green w White Stripe STOP RUN White w Orange Stripe Signal Ground White w Blue Stripe 4 20ma IN 4 20ma IN Blue w ...

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