Greenheck LD, LDP, LB, LBP User Manual

Document 453283

Series L • Models LB, LBP, LD, LDP

Low Silhouette Centrifugal Roof Exhaust Fans

Installation, Operation and Maintenance Manual

Please read and save these instructions for future reference. Read carefully before attempting to assemble, install, operate or maintain the product described. Protect yourself and others by observing all safety information. Failure to comply with instructions could result in personal injury and/or property damage!

Series L Exhaust Fans

Greenheck’s Series L, low silhouette, models LD, LB, LDP, and LBP centrifugal roof exhaust fans provide the industry’s best performance and durability for general clean air applications. Series L exhaust fans have the broadest performance in the industry, up to

1.25 in. wg (311 Pa) and 37,500 cfm (63,713 m3/hr).

General Safety Information

Only qualiﬁed personnel should install this fan. Personnel should have a clear understanding of these instructions and should be aware of general safety precautions. Improper installation can result in electric shock, possible injury due to coming in contact with moving parts, as well as other potential hazards. Other considerations may be required if high winds or seismic activity are present. If more information is needed, contact a licensed professional engineer before moving forward.

1. Follow all local electrical and safety codes, as well as the National Electrical Code (NEC) and the National Fire Protection Agency (NFPA), where applicable. Follow the Canadian Electrical Code (CEC) in Canada.

2. The rotation of the wheel is critical. It must be free to rotate without striking or rubbing any stationary objects.

3. Motor must be securely and adequately grounded.

4. Do not spin fan wheel faster than max cataloged fan RPM. Adjustments to fan speed signiﬁcantly effects motor load. If the fan RPM is changed, the motor current should be checked to make sure it is not exceeding the motor nameplate amps.

5. Do not allow the power cable to kink or come in contact with oil, grease, hot surfaces, or chemicals. Replace cord immediately if damaged.

6. Verify that the power source is compatible with the equipment.

7. Never open access doors to a duct while the fan is running.

DANGER

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

CAUTION

When servicing the fan, motor may be hot enough to cause pain or injury. Allow motor to cool before servicing.

CAUTION

Precaution should be taken in explosive atmospheres.

DANGER

Pour écarter les risques d’incendie, de choc électrique ou de blessure grave, veiller à toujours débrancher, verrouiller et étiqueter la source de courant avant l’installation ou l’entretien.

ATTENTION

Lors de toute intervention sur la soufflante, le moteur peut être suffisamment chaud pour provoquer une douleur voire une blessure. Laisser le moteur refroidir avant toute maintenance.

ATTENTION

Faire preuve de précaution dans les atmosphères explosives.

Centrifugal Roof Exhaust Fans 1

Receiving

Upon receiving the product, check to ensure all items are accounted for by referencing the delivery receipt or packing list. Inspect each crate or carton for shipping damage before accepting delivery. Alert the carrier of any damage detected. The customer will make notiﬁcation of damage (or shortage of items) on the delivery receipt and all copies of the bill of lading which is countersigned by the delivering carrier. If damaged, immediately contact your Greenheck Representative. Any physical damage to the unit after acceptance is not the responsibility of Greenheck Fan Corporation.

Unpacking

Verify that all required parts and the correct quantity of each item have been received. If any items are missing, report shortages to your local representative to arrange for obtaining missing parts. Sometimes it is not possible that all items for the unit be shipped together due to availability of transportation and truck space. Conﬁrmation of shipment(s) must be limited to only items on the bill of lading.

Handling

When lifting the unit to the roof, securely fasten straps to the drive frame located in the motor compartment. Access to the motor compartment is accomplished by removing bolts securing the hood to the base. The hood cover will need to be removed for access to the drive frame. The cover can then be removed and placed on a ﬂat surface in an area protected from strong winds.

When unit is on the roof, move fan to desired location and fasten securely through mounting holes in base. Shims may be necessary depending upon roof material thickness.

The motor amperage and voltage ratings must be checked for compatibility to supply voltage prior to ﬁnal electrical connection. Electrical lead-in wires should be run through the conduit provided between the curb and the bottom of the motor compartment. Wiring must conform to local and national codes.

IMPORTANT

Do not lift by the fan hood. Avoid lifting fans in a way that will bend or distort fan parts. Never pass slings or timbers through the venturi of fan. Fans with special coatings or paints must be protected in handling to prevent damage.

Storage

Fans are protected against damage during shipment. If the unit cannot be installed and operated immediately, precautions need to be taken to prevent deterioration of the unit during storage. The user assumes responsibility of the fan and accessories while in storage. The manufacturer will not be responsible for damage during storage. These suggestions are provided solely as a convenience to the user.

Indoor

The ideal environment for the storage of fans and accessories is indoors, above grade, in a low humidity atmosphere which is sealed to prevent the entry of blowing dust, rain or snow. Temperatures should be evenly maintained between 30° to 110°F (-1° to 43°C), wide temperature swings may cause condensation and “sweating” of metal parts. All accessories must be stored indoors in a clean, dry atmosphere.

Remove any accumulations of dirt, water, ice, or snow and wipe dry before moving to indoor storage. To avoid “sweating” of metal parts allow cold parts to reach room temperature. To dry parts and packages use a portable electric heater to remove any moisture build up. Leave coverings loose to permit air circulation and to allow for periodic inspection.

The unit should be stored at least 3½ inches (89 mm) off the ﬂoor on wooden blocks covered with moisture proof paper or polyethylene sheathing. Aisles between parts and along all walls should be provided to permit air circulation and space for inspection.

Outdoor

Fans designed for outdoor applications may be stored outdoors, if absolutely necessary. Roads or aisles for portable cranes and hauling equipment are needed.

The fan should be placed on a level surface to prevent water from leaking into the fan. The fan should be elevated on an adequate number of wooden blocks so it is above water and snow levels and has enough blocking to prevent it from settling into soft ground. Locate parts far enough apart to permit air circulation, sunlight and space for periodic inspection. To minimize water accumulation, place all fan parts on blocking supports so rain water will run off.

Do not cover parts with plastic ﬁlm or tarps as these cause condensation of moisture from the air passing through heating and cooling cycles. Fan wheels should be blocked to prevent spinning caused by strong winds.

Inspection and Maintenance During Storage

While in storage, inspect fans once per month. Keep a record of inspection and maintenance performed.

If moisture or dirt accumulations are found on parts, the source should be located and eliminated. At each inspection, rotate the wheel by hand ten to ﬁfteen revolutions to distribute lubricant on motor. If paint deterioration begins, consideration should be given to touch-up or repainting. Fans with special coatings may require special techniques for touch-up or repair.

Centrifugal Roof Exhaust Fans2

Machined parts coated with rust preventive should be restored to good condition promptly if signs of rust occur. Immediately remove the original rust preventive coating with petroleum solvent and clean with lint-free cloths. Polish any remaining rust from surface with crocus cloth or ﬁne emery paper and oil. Do not destroy

Series L Dimensions

Model LB

1.75

(44)

Model LBP

1.75

(44)

Model LD

1.75

(44)

Model LDP

1.75

(44)

All dimensions given in inches (millimeters). Weights given in pounds (kilograms).

Size A B C D E F

60- 7517

80- 9519

100-

120

Size A B C D E F

60- 7517

80- 9519

100-

120

the continuity of the surfaces. Thoroughly wipe clean with Tectyl® 506 (Ashland Inc.) or the equivalent. For hard to reach internal surfaces or for occasional use, consider using Tectyl® 511M Rust Preventive, WD-40® or the equivalent.

(559)

(660)

(762)

(864)

(1016)

(1168)

(1321)

(1473)

(1626)

(559)

(660)

(762)

(864)

(1016)

(1168)

(1321)

(1473)

(1626)

(432)

(483)

(559)

(432

(483)

(559)

(991)

(1295)

(1600)

(1905)

(2210)

38½

(978)

(1016)

(1168)

49½

(1257)

(1473)

(1600)

70½

(1791)

76½

(1943)

83½

(2121)

(559)

(711)

(762)

(584)

(635)

(711)

(889)

(1016)

(1092)

45½

(1156)

(1270)

(1524)

705⁄8

(1794)

703⁄8

(1788)

79½

(2019)

(711)

(813)

(914)

(1016)

(1168)

51¾

(1314)

(1473)

(1626)

(1778)

(686)

17¼

(438)

(432)

17½

(445)

(457)4 (102)

17½

(445)

(533)

(584)

(584)6 (152)

20½

23½

(521)

(597)

29½

265⁄8

(749)

(676)

325⁄8

(686)

(829)

33½

373⁄8

(851)

(949)

41½

(1041)

(1054)

453⁄8

(965)

(1153)

(356)

(432)

(406)

(432)

24½

(483)

(622)

24½

(483)

(622)

23½

(508)

(597)

26½

(584)

(673)

343⁄8

(660)

(873)

38¼

(737)

(972)

403⁄8

(813)

(1026)

435⁄8

(889)

(1108)

13½

(343)

(330)2 (51)8 (203)

13½

(343)

(406)4 (102)

13½

(343)

(457)4 (102)

11½

13½

(292)

(343)

12½

16½

(318)

(419)

18½

(356)

(470)

3¼

(85)

4½

(114)

6¾

(171)

8½

(216)

9¾

(248)

11½

(292)

115⁄8

(295)

12½

(318)

325⁄8

(829)

(660)

(762)

(864)

(1016)

(1168)

(1321)

(1473)

(1626)

—

Damper

Size

(305)

(406)

(457)

(610)

(762)

(914)

(1067)

(1219)

(1372)

Damper

Size

(305)

(406)

(457)

(610)

(762)

(914)

(1067)

(1219)

(1372)

Damper

Size

(254)

(305)

Damper

Size

(203)

(254)

(305)

Roof

Opening

14½

(368)

18½

(470)

20½

(521)

20½

(521)

26½

(673)

32½

(826)

38½

(978)

44½

(1130)

50½

(1283)

56½

(1435)

Roof

Opening

14½

(368)

18½

(470)

20½

(521)

20½

(521)

26½

(673)

32½

(826)

38½

(978)

44½

(1130)

50½

(1283)

56½

(1435)

Roof

Opening

10½

(267)

12½

(318)

14½

(368)

Roof

Opening

10½

(267)

12½

(318)

14½

(368)

Weight

Galv.

(25)

(37)

135

(61)

145

(66)

188

(85)

249

(113)

338

(153)

396

(180)

430

(195)

596

(270)

Weight

Alum.

(45)

116

(53)

179

(81)

191

(86)

239

(108)

318

(144)

444

(201)

530

(240)

579

(263)

780

(354)

Weight

Galv.

(17)

(20)

(26)

Weight

Alum.

(22)

(29)

(37)

Centrifugal Roof Exhaust Fans 3

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