Power Roof Ventilator/Fans Installation, Operation, and Maintenance Manual Curb Mount Utility Set Down-blast Centrifugal Fan Up-blast Centrifugal Fan Utility Set Square Inline Axial Fan RECEIVING AND INSPECTION Upon receiving unit, check for any interior and exterior damage, and if found, report it immediately to the carrier. Also check that all accessory items are accounted for and are damage free.
TABLE OF CONTENTS WARRANTY .................................................................................................................................................. 3 INSTALLATION ............................................................................................................................................. 4 Mechanical ................................................................................................................................................ 4 Site Preparation ....
WARRANTY This equipment is warranted to be free from defects in materials and workmanship, under normal use and service, for a period of 12 months from date of shipment. This warranty shall not apply if: 1. The equipment is not installed by a qualified installer per the MANUFACTURER’S installation instructions shipped with the product, 2. The equipment is not installed in accordance with federal, state and local codes and regulations, 3. The equipment is misused or neglected, 4.
INSTALLATION It is imperative that this unit is installed and operated with the designed airflow and electrical supply in accordance with this manual. If there are any questions about any items, please call the service department at 1-866-784-6900 for warranty and technical support issues. Mechanical WARNING: DO NOT RAISE VENTILATOR BY THE HOOD, BLOWER OR MOTOR SHAFT, OR BEARINGS – USE LIFTING LUGS PROVIDED OR A SLING Site Preparation 1.
Wall Mounting 1. The same instructions, warnings and notes found under Roof Mounting section will apply. Refer to steps 2 and 3, and steps 5 through 8. 2. Masonry Wall: Around the wall opening install an angle iron frame at least 2” x2” x ¼”. Frame should be approximately 1/2” smaller than the inside base dimension of the ventilator. Secure the lead cinch type anchors with non-ferrous bolts (3 per side). The ventilator should be mounted to the mounting angle with self-taping sheet metal screws (3 per side).
Duct Routing Examples Proper Duct Routing Improper Duct Routing 6
Up-Blast Roof Mount Installation Up-Blast Wall Mount Installation 7
Up-Blast Through Wall Mount Installation Down-Blast Installation 8
Typical Hinge Kit – Centrifugal Upblast Typical Grease Box Installation 9
Up-Blast Utility Set Installation Up-Blast Utility Set Inlet Options 10
Up-Blast Utility Set Discharge Extension Option 11
Up-Blast Curb Mount Utility Set Installation Up-Blast Curb Mounted Utility Set Hinging Instructions 12
Up-Blast Curb Mounted Utility Set Discharge Extension Option Up-Blast Curb Mounted Utility Set Rain Cap Option 13
Square Inline Mounting Bracket Detail Square Inline Mounting Configurations 14
Square Inline Discharge Options Square Inline Discharge Configurations 15
Electrical Before connecting power to the fan, read and understand this entire section of this document. As-built wiring diagrams are available with each fan by the factory. Electrical wiring and connections should be done in accordance with local ordnances and the National Electric Code, ANSI/NFPA70. Be sure the voltage and phase of the power supply and the wire amperage capacity is in accordance with the motor nameplate.
PSC (Permanent Split Capacitor) Motor Speed Control Some single phase direct drive fans contain speed controls that regulate the amount of voltage going to the motor. Specific PSC motors must be used in conjunction with speed controls. The speed control has a knob with an off position, and high to low range. At high speed, the speed control allows all of the line voltage to pass right to the motor. A minimum speed adjustment is provided to allow independent control of the minimum speed setting.
Fan to Building Wiring Connection 18
OPERATION Prior to starting up or operating the ventilator, check all fasteners for tightness. In particular, check the set screw in the wheel hub, bearings and the fan sheaves (pulleys). With power to the fan OFF or prior to connecting ventilator to power, turn the fan wheel by hand to be sure it is not striking the inlet or any obstacles. Re-center if necessary. Start Up Special Tools Required AC Voltage Meter Tachometer Amperage Meter Standard Hand Tools Start Up Procedure 1. 2. 3. 4. 5. 6.
Pulley Adjustment (Belt Drive Fans) The adjustable motor pulley is factory set for the RPM specified. Speed can be increased by closing or decreased by opening the adjustable motor sheave. Two groove variable pitch pulleys must be adjusted an equal number of turns open or closed. Any increase in speed represents a substantial increase in horsepower required by the unit. Motor amperage should always be checked to avoid serious damage to the motor when the speed is varied.
Pulley Combination Chart Motor RPM 1725 1/3 to 1-1/2 HP MOTOR PULLEY AX BELTS 1VL34 Dd1 Dd2 Pd1 1.9 2.9 2 3 Pd2 Open BLOWER PULLEY AK114 TURNS ON MOTOR PULLEY PITCH DIAMETER 5 4 1/2 4 3 1/2 3 2 1/2 2 1 1/2 1 1/2 0 11 11.2 308 323 339 354 370 385 400 416 431 447 462 MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 1VL40 2.4 3.4 2.6 3.
Troubleshooting The following table lists causes and corrective actions for possible problems with the fan units. Review this list prior to consulting manufacturer.
MAINTENANCE To guarantee trouble free operation of this fan, the manufacturer suggests following these guidelines. Most problems associated with fan failures are directly related to poor service and maintenance. Please record any maintenance or service performed on this fan in the documentation section located at the end of this manual. WARNING: DO NOT ATTEMPT MAINTENANCE ON THE FAN UNTIL THE ELECTRICAL SUPPLY HAS BEEN COMPLETELY DISCONNECTED General Maintenance 1. 2. 3. 4.
2 weeks after startup 1. 2. Belt tension should be checked after the first 2 weeks of fan operation on belt drive fans. Belts tend to stretch and settle into pulleys after an initial start-up sequence. Do not tension belts by changing the setting of the motor pulley, this will change the fan speed and may damage the motor. To re-tension belts, turn the power to the fan motor OFF. Loosen the fasteners that hold the motor to the fan. Move the motor to the left or right to adjust the belt tension.
Start-Up and Maintenance Documentation START-UP AND MEASUREMENTS SHOULD BE PERFORMED AFTER THE SYSTEM HAS BEEN AIR BALANCED (Warranty will be void without completion of this form) Job Information Job Name Address City State Zip Phone Number Fax Number Contact Purchase Date Service Company Address City State Zip Phone Number Fax Number Contact Start-Up Date Fan Unit Information Refer to the start-up procedure in this manual to complete this section.
Date Service Performed 26
Date Service Performed 27
Date Service Performed Factory Service Department Phone: 1-866-784-6900 Fax: 1-919-554-9374 28
