Greenheck Fan NYD, NYB User Manual

PN 463277

Model NYD & NYB

Tamper-Resistant Centrifugal Roof Exhaust

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!

Model NYD Direct Drive

Model NYD is a direct drive centrifugal roof exhaust fan. These fans are speciﬁcally designed for applications where tamper resitance is necessary. Performance capabilities range up to 3,000 cfm

(5,097 m3/hr) and up to 1.0 in. wg (249Pa) of static pressure. The maximum continuous

operating temperature for fan sizes 075-140 is 180°F (82°C). NYD fans are available in six sizes with nominal wheel diameter ranging from 8 to 14 inches (203 to 356mm) (075 - 140 unit sizes). Each fan shall bear a permanently afﬁxed manufacturer’s engraved metal nameplate containing the model number and individual serial number.

The maximum continuous operating temperature is 180°F (82°C). NYB fans are available in four sizes with nominal wheel diameter ranging from 11 to 24 inches (279 to 610 mm) (100 - 240 unit sizes). Each fan shall bear a permanently afﬁxed manufacturer’s engraved metal nameplate containing the model number and individual serial number.

Model NYB Belt Drive

Model NYB is a belt drive centrifugal roof exhaust fan. These fans are speciﬁcally designed for applications where tamper resistance is necessary. Performance capabilities range up to 8,000 cfm (13,592 m3/hr) and up to

1.0in.wg (249Pa) of static pressure.

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.

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.

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 Electric 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.

Models NYD & NYB • Tamper-Resistant Centrifugal Roof Exhaust Fans

Receiving

Upon receiving the product, check to make sure all items are accounted for by referencing the bill of lading to ensure all items were received. Inspect each crate for shipping damage before accepting delivery. Notify the carrier if any damage is noticed. The carrier will make notiﬁcation on the delivery receipt acknowledging any damage to the product. All damage should be noted on all the copies of the bill of lading which is countersigned by the delivering carrier. A Carrier Inspection Report should be ﬁlled out by the carrier upon arrival and reported to the Trafﬁc Department. If damaged upon arrival, ﬁle a claim with carrier. 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

Move fan to desired location and fasten securely through mounting holes in base. Shims may be necessary depending upon roofing material thickness. The following diagram depicts dimensions for models NYD and NYB.

CAUTION

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.

A heavy-gauge stainless steel hasp allows the unit to be padlocked for security. The hasp design conceals the padlock beneath the housing skirt, which keeps it out of sight and the weather.

The motor’s 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.

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. Greenheck Fan Corporation 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 get rid of any moisture buildup. Leave coverings loose to permit air circulation and to allow for periodic inspection.

Table 1: Dimensional Data

201⁄2

(521)

201⁄2

(521)

(635)

231⁄8

(587)

231⁄8

(587)

267⁄8

(683)

325⁄8

(829)

385⁄8

(981)

Damper

Square

(254)

(305)

(356)

(406)

(457)

(610)

Model A B C

303⁄4

NYD-75

NYD-90

NYD/NYB-100

NYD-120

NYD-130

NYD/NYB-140

NYB-180

NYB-240

All dimensions in inches (millimeters). Weight in pounds (kilograms).

Models NYD & NYB • Tamper-Resistant Centrifugal Roof Exhaust Fans

(483)

(559)

(610)

(660)

(762)

(864)

(781)

303⁄4

(781)

351⁄2

(902)

(940)

411⁄2

(1054)

(1143)

521⁄2

(1334)

Roof

Opening

121⁄2

(318)

121⁄2

(318)

141⁄2

(368)

161⁄2

(419)

161⁄2

(419)

181⁄2

(470)

201⁄2

(521)

261⁄2

(673)

Approximate

Weight

(28)

(34)

(43)

105

(48)

135

(61)

225

(102)

314

(142)

Figure 1

2 1/2 in.

(64 mm)

The unit should be stored at least 3½ inches

Counterclockwise

Airﬂow

(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 that 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 that 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 touchup or repair.

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 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.

Removing From Storage

As fans are removed from storage to be installed in their ﬁnal location, they should be protected and maintained in a similar fashion until the fan equipment goes into operation.

Pre-Starting Checks

1. Check all fasteners and setscrews for tightness. The wheel should rotate freely and be aligned as shown in ﬁgure 2.

Wheel Overlap Dimensions

Model G - Overlap in. (mm) H - Gap in. (mm)

NYD 075-090 - 3/32 (2)

NYD 075-140 - 1/4

NYB 100-140 1/4 (6) -

NYB 180-240 3/8

Figure 2

(10) -

2. Wheel position is preset and the unit is test run at the factory. Movement may occur during shipment and realignment may be necessary.

3. Centering can be accomplished by loosening the bolts holding the drive frame to the shock mounts and repositioning the drive frame.

4. Wheel and inlet cone overlap can be adjusted by loosening the setscrews in the wheel and moving the wheel to the desired position.

5. Check wheel rotation by momentarily energizing the unit. Rotation should be clockwise as shown in figure 3 and correspond to the rotation decal on the unit. Rotation is determined when the unit is viewed from the motor or shaft pulley side. If wheel rotation is incorrect reverse two of the wiring leads or check motor wiring for single-phase.

Wheel Rotation (view from top of fan)

Clockwise

Airﬂow

NYD 60-130 NYD 140 All NYB Models

Figure 3

WARNING

Correct direction of wheel rotation is critical. Reversed rotation will result in poor air performance, motor overloading and possible burnout.

Counterclockwise

Airﬂow

(6)

Models NYD & NYB • Tamper-Resistant Centrifugal Roof Exhaust Fans

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