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HHRRVV HHOOOODDEEDD RROOOOFF VVEENNTTIILLAATTOORRSS
PPRROODDUUCCTT SSPPEECCIIFFIICCAATTIIOONN GGUUIIDDEE
11..00 GGEENNEERRAALL
A. Fans shall be model HRVD Direct Drive or HRVB Belt Drive Hooded Roof Ventilators as manufactured by Continental
Fan Manufacturing Inc., of Buffalo, NY, and of the size and capacity as indicated on the drawings and fan schedule.
B. HRVD or HRVB Hooded Roof Ventilators shall be furnished as either supply or exhaust as indicated on the
drawings and fan schedule.
C. HRVD or HRVB Hooded Roof Ventilators configured for supply shall be furnished with filters as indicated on the
drawings and fan schedule.
D. Fans shall be rated and tested in accordance with ANSI/AMCA Standard 210-99.
E. All motors and electrical components shall conform to NEMA standards.
22..00 FFAANN HHOOUUSSIINNGG -- DDIIRREECCTT DDRRIIVVEE MMOODDEELL HHRRVVDD
A. Fan shall be axial flow, roof mount, and direct drive configuration consisting of a hood section and fan housing with
curb base.
B. Fan housing and curb base shall be of welded heavy gauge steel construction.
C. Fan motor base shall consist of heavy gauge steel welded directly to fan housing.
D. Fan housing and motor base shall be coated with an air dried gray enamel finish.
E. Fan shall have an aluminum hood with bird screen.
22..11 FFAANN HHOOUUSSIINNGG -- BBEELLTT DDRRIIVVEE MMOODDEELL HHRRVVBB
A. Fan shall be axial flow, roof mount, and belt drive configuration consisting of a hood section and fan housing with
curb base.
B. Fan housing and curb base panel shall be of welded heavy gauge steel construction.
C. Fan motor, shaft and bearings support base shall consist of heavy gauge steel welded directly to fan housing.
D. Fan housing and motor base shall be coated with an air dried gray enamel finish
E. Fan shall have an aluminum hood with bird screen.
33..00 FFAANN IIMMPPEELLLLEERR
A. Axial impeller shall be constructed of spark resistant, die cast aluminum airfoil shaped blades secured to a die cast
aluminum hub assembly.
B. Axial impeller blades shall be of adjustable pitch construction with multiple hub-to-blade arrangements to maxi-
mize air performance. Blade pitch angles shall be factory set.
C. Axial impeller hub shall be designed to incorporate a split taper bushing, and be keyed directly to drive shaft.
44..00 FFAANN MMOOTTOORR AANNDD DDRRIIVVEE
A. Motor shall be TEFC industrial duty and conform to NEMA standards.
B. Motor shall be of voltage, horsepower, RPM and enclosure as indicated on the fan schedule.
C. Fan sheaves shall be cast iron and appropriately sized and aligned.
D. Fan belts shall be static conducting, plus oil and heat resistant.
E. Fan shaft shall be steel, turned, ground and polished.
F. Fan shaft bearings shall be lubricated, self-aligning ball type in cast iron pillow block mounts with external grease fittings.
55..00 OOPPTTIIOONNAALL FFAANN AACCCCEESSSSOORRIIEESS
A. Where indicated, fan shall be provided with the following optional accessories:
• Disconnect switches – mounted, or mounted and wired • Variable pitch sheaves
- NEMA 3R non-fused • Pre-fabricated roof curbs
- NEMA 4X non-fused • 2” disposable filters, for filtered intake unit
• Motors • Motor operated damper (supply or exhaust)
- Explosion proof • Gravity shutter for exhaust only
- Special duty • Custom curb base
• Protective coatings • Inspection door
- Epoxy
- Eisenheiss
66..00 FFAANN TTEESSTTIINNGG
A. Axial impeller shall be balanced and mounted in fan assembly.
B. Fan assembly shall be run and tested prior to shipment.
C. A test report shall be maintained on file for each individual fan.