PennBarry ULB User Manual

Sample Speciﬁcations - ULD

Upblast Roof Ventilator

Furnish and install as indicated on the plans PennBarry, Model ULD, Direct Drive, Low Silhouette-Upblast Roof Ventilator(s), complete with motor(s) and other accessories as described below. The fan(s) shall be of heavy duty construction, designed and suitable for continuous industrial use.

The fan housing shall be fabricated of heavy gauge sheet steel spun to form a smooth air inlet and welded to a structural plate motor mount. For a weatherproof installation the housing shall have overlapping joints and a curb cap extended down over the roof curb a minimum of 3". The fan discharge shall be of an up-blast design with an extended throat beyond the propeller and two (2) discharge dampers which shall open automatically from the airstream pressure and close automatically from the gravity of the damper blades. The damper blades shall be galvanized steel with a weatherproof overlapping formed edgeseal and shall each have a continuous full length 1/2" diameter axle for structural support of the damper blade. Each axle shall be welded to its damper blade and shall turn in bronze oilite bushings at both ends. The dampers shall be surrounded by a circular galvanized windband to shield the dampers from wind and allow them to close when the fan is shut off. All mild steel surfaces not galvanized shall be prepared for painting by means of a hot iron-phosphate wash and rinse. The prepared surfaces shall be coated with an air dry enamel paint. Finish coat shall be ﬁeld applied by others to match building trim color. Galvanized surfaces are to be supplied uncoated.

The fan propeller shall be of cast aluminum or fabricated steel airfoil design. The propeller shall be statically and dynamically balanced to commercially accepted standards.

The fan motor shall be of a NEMA foot mounted design, suitable for continuous duty, and of the horsepower, speed and enclosure type (open) (totally-enclosed) (explosion-proof Class ________. Group ________,) listed in the fan schedule. The motor shall be suitable for operation on the power supply listed in the fan schedule for phase, cycles and voltage. The fan accessories shall include: ____________________

________________________________________________

The fan, motor, and accessory combination shall be as manufactured by PennBarry of Richardson, Texas. The fan shall be test run at the factory, and shall deliver the required airﬂow CFM when installed and operating against a system static pressure resistance as stated in the fan schedule.

PENNBARRY

ULB - Sample Speciﬁcations

Upblast Roof Ventilator

Furnish and install as indicated on the plans PennBarry, Model ULB, Belt Drive, Low Silhouette-Upblast Roof Ventilator(s), complete with belt drive(s) motor(s) and other accessories as described below. The fan(s) shall be of heavy duty construction, designed and suitable for continuous industrial use.

The fan housing shall be fabricated of heavy gauge sheet steel spun to form a smooth air inlet and welded to a structural bearing mounting plate and motor mounting plate assembly. For a weatherproof installation the housing shall have overlapping joints and a curb cap extended down over the roof curb a minimum of 3". The fan discharge shall be of an up-blast design with an extended throat beyond the propeller and two (2) discharge dampers which shall open automatically from the airstream pressure and close automatically from the gravity of the damper blades. The damper blades shall be galvanized steel with a weatherproof overlapping formed edge-seal and shall each have a continuous full length 1/2" diameter axle for structural support of the damper blade. Each axle shall be welded to its damper blade and shall turn in bronze oilite bushings at both ends. The dampers shall be surrounded by a circular galvanized windband to shield the dampers from wind and allow them to close when the fan is shut off. All mild steel surfaces not galvanized shall be prepared for painting by means of a hot iron-phosphate wash and rinse. The prepared surfaces shall be coated with an air dry enamel paint. Finish coat shall be ﬁeld applied by others to match building trim color. Galvanized surfaces are to be supplied uncoated.

The belt drive shall have a drive service factor of 1.5. All drive sheaves shall be of cast or malleable iron, accurately machined and balanced. The drive belt tension shall be easily maintained by adjusting the motor position via slotted motor mounting holes on smaller motors and via the motors and via the motor slide base on motor frame sizes 215 and larger. The fan belts shall be removable without any disassembly of the unit.

The fan bearings shall be self-aligning 200 series ball bearing pillow-block units. The bearings shall be equipped with pressure relieving neoprene seals. The fan bearings shall have a minimum L10 bearing life of 35,000 hours (average life equals ﬁve times L10 life). The fan shaft shall be of mild steel turned, ground and polished to standard commercial tolerances and the bearing manufacturer for rated bearing life.

The fan propeller shall be of cast aluminum or fabricated steel airfoil design. The propeller shall be statically and dynamically balanced to commercially accepted standards.

________________________________________________

compatible with the tolerances suggested by

PENNBARRY

+ 2 hidden pages