Accurex XRS Operator’s Manual

Document 470391

Model XRS

Roof Supply Fan

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 these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.

Centrifugal Supply Fans

Fans are specifically designed for filtered roof supply
applications. Fans feature permanent washable
aluminum filters for years of reliable use and double­width forward-curved wheels for high efficiency and
low sound. Available with straight-sided hood or
architectural louvered penthouse housing.

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 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 affect
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.

Roof Supply Fan 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 Representative. Any physical
damage to the unit after acceptance is not the
responsibility of the manufacturer.

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

Fans are to be rigged and moved by the lifting brackets
provided or by the skid when a forklift is used. Location
of brackets varies by model and size. Handle in such
a manner as to keep from scratching or chipping the
finish. Damaged finish may reduce the ability of the fan
to resist corrosion.

Fans should never be lifted by the shaft, fan housing,
motor, belt guard, windband or accessories.

Lifting

Lifting the fans must
be done with care to
avoid damaging the
housing. For model
Straight-housing
models attach four
lifting devices under
the outer housing,
each device beneath
the vertical row of fasteners as depicted in Figure 1.

Lifting devices should be a minimum of 3 inches wide to
avoid damaging the sheet metal housing.

Do not lift this model near the center of the outer
housing.

For Louvered Penthouse models attach a minimum of
four lifting devices under an exterior louver panel, each
device near the corner of the louvered housing.

Figure 1

Lift Here

Lift Here

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

The unit should be stored at least 3½ in. (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.

Roof Supply Fan2

Inspection & 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 in motor and bearings.
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.

Machined parts coated with rust preventive should be
restored to good condition promptly if signs of rust
occur. Immediately remove the original rust preventive

Dimensional Data

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.

B SQ.

C

D

21/2 in.

SQ.

A

Fan

SizeA SQ.B SQ.

26 351⁄8 231⁄4 101⁄4 121⁄4 103⁄4 75⁄8 67⁄8 241⁄2 121⁄4 61⁄8 (4) 12x20 145

90

(660) (892) (591) (260) (311) (273) (194) (175) (662) (311) (156) (305x508) (66)

100

120

150

180

200

30 411⁄8 231⁄4 101⁄4 135⁄8 117⁄8 91⁄16 83⁄16 281⁄2 141⁄4 71⁄8 (4) 12x25 173

(762) (1045) (591) (260) (346) (302) (230) (208) (724) (362) (181) (305x635) (78.5)

34 471⁄8 271⁄4 101⁄4 161⁄8 137⁄8 101⁄16 815⁄16 321⁄2 181⁄4 71⁄8 (4) 16x25 225

(864) (1197) (692) (260) (410) (352) (256) (227) (826) (464) (181) (406x635) (102)

40 531⁄8 311⁄4 101⁄4 191⁄8 161⁄2 111⁄4 107⁄16 381⁄2 201⁄4 91⁄8 (8) 16x20 336

(1016) (1349) (794) (260) (486) (419) (286) (265) (978) (514) (232) (406x508) (152)

46 611⁄8 341⁄4 121⁄4 221⁄2 191⁄2 101⁄8 113⁄4 441⁄2 261⁄4 91⁄8

(1168) (1153) (870) (311) (571) (495) (257) (298) (1130) (667) (232) (4) 20x20 (181)

52 731⁄8 391⁄4 121⁄4 231⁄4 251⁄4 133⁄8 143⁄8 501⁄2 301⁄4 101⁄8 (8) 20x25 620

(1321) (1857) (997) (311) (591) (641) (340) (365) (1283) (768) (257) (508x635) (281)

CDFGHJ

All dimensions are in inches (millimeters). Pounds (kg).

Base of Unit

A

G

SQ.

K

SQ.L SQ.

Optional Duct Adapter

J

F

J

H

Nominal

M

Filter

(4) 16x20

(406x508)

(508x508)

Weight

400

M

L

SQ.KSQ.

M

M

Roof Supply Fan 3