YORK ® STACK FAN This Installation Manual is provided as a guide for the installation of fans manufactured by YORK ® Stack Fan. It is the responsibility of the purchaser to provide qualified personnel experienced in the installation, operation, and maintenance of air moving equipment. Instructions given in this manual are general in nature and apply to a variety of models manufactured by YORK .
YORK ® STACK FAN LIFTING INSTRUCTIONS Fans are designed to be lifted and moved as a single module. YORK ® does not recommend lifting connected fan modules unless the fan module(s) is supported on a common base. 1. Carefully remove any crate and packing materials. 2.
YORK ® STACK FAN Installation, Operation, & Maintenance SHORT TERM STORAGE If fan installation is delayed, store the unit in a protected area. Protect the fan and motor bearings from moisture and vibration (or shock loading). LONG TERM STORAGE If a fan is to be stored for any length of time and the bearings are re-greasable, the motor bearings should immediately be filled with grease while rotating the fan and then the bearings should be re- greased and rotated monthly.
YORK ® STACK FAN Unit Start Up When the unit is removed from storage, all grease should be purged and replenished with fresh grease. The following check list is recommended to ensure proper operation: Bushing Fastener Torque Bushing Type Screw Size Recommended Torque 10-24 60 in-lbs.
YORK ® STACK FAN Motor and Structural Maintenance MOTOR MAINTENANCE The three basic rules of motor maintenance are: keep the motor clean, dry and properly lubricated. Keeping motors and windings clean is important as trapped dirt and dust may impede air flow and heat convection causing motor windings to overheat possibly leading to premature failure.
Page 7
YORK ® STACK FAN Troubleshooting Guidelines Use safety practices when investigating fan or system performance problems. General safe practices and performance trou- bleshooting guidelines can be found in AMCA Publication 410: Recommended Safety Practices for Users and Installers of Industrial and Commercial Fans, and AMCA Publication 202-98 (R2011): Troubleshooting. Fan application and field mea- surement procedures can be found in AMCA Publication 201-02 (R2011): Fans and Systems and AMCA Publication 203-90 (R2011): Field Performance Measurement of Fan Systems.
YORK ® STACK FAN Installation ASSEMBLY YORK STACK FAN ® Intake Side Supply Side Bolt bottom YORK STACK FAN modules to the isolation base, or other structure, and adjacent modules using the inlet and ® outlet mounting flanges. The first row of modules should be securely installed before installing the second row of modules. YORK ®...
Page 9
YORK ® STACK FAN Installation (Continued) Top, Bottom and Side Connections *Intake Side *Intake Side Shown • 1/2-13 x 1.00 Grade 5 Hex Head Cap Screw (or equivalent) 4 required (1 in each corner) • 1/2 Flat Washer, 8 required (2 in each corner) •...
Page 10
YORK ® STACK FAN Installation (Continued) RADIAL GAP, OVERLAP AND IMPELLER ALIGNMENT Efficient fan performance can be maintained by having the correct gap and overlap between the impeller and inlet funnel. These items should be checked at installation, after the fan has been in operation for 24 hours, and after the unit has been serviced.
Page 11
YORK ® STACK FAN Installation (Continued) Recommended Inlet Spacing FAN SPACING Location and Placement of Plenum Fans in Air Handlers Center the fan inlets in both the horizontal and vertical planes. • For inlet clearance, see A minimum of one fan impeller diameter clearance is recommended.
YORK ® STACK FAN Piezometer Ring Data HOW IT WORKS The Piezo Ring system is based on the principle of a flow nozzle. The inlet funnel of the fan is used as the flow nozzle, and the flow can be calculated by measuring the static pressure drop through the inlet funnel.
Page 13
YORK ® STACK FAN Piezometer Ring Data (Continued) To Piezo Ring Calculation when using the Piezo Ring For standard air (ρ = 0.075 lb/ft3): (CFM) = K Factor * √(delta pressure) To Front Panel • K Factor = value from chart •...
YORK ® STACK FAN Operation Checklist When the unit is removed from storage, all grease should be purged and replenished with fresh grease. The following check list is recommended to ensure proper operation: Verify proper safety precautions have been followed: Electrical power must be locked off.
Page 15
FOR MORE INFORMATION CONTACT YOUR LOCAL JOHNSON CONTROLS BRANCH...
Need help?
Do you have a question about the York Stack Fan and is the answer not in the manual?
Questions and answers