Related Manuals for McQuay Skyline IM 777-6
Summary of Contents for McQuay Skyline IM 777-6
- Page 1 Installation and Maintenance Manual IM 777-6 Skyline™ Air Handler Group: Applied Air Systems Part Number: IM 777 Date: October 2011 Models OAC/OAH 003G – 090G ® © 2011 McQuay International...
-
Page 2: Table Of Contents
Introduction ....... . . 3 Operation Guidelines ......18 General Information . -
Page 3: Introduction
Introduction Introduction General Information Receiving and Handling Carefully check items against the bills of lading to verify The system design and installation must follow accepted industry all crates and cartons have been received. Carefully practice as described in the ASHRAE Handbook, the National inspect all units for shipping damage. -
Page 4: Unit Storage
Introduction Unit Storage Belt driven fans: • Reduce belt tension by at least 50% or remove the belts. • Store on a level surface in a clean, dry location where Remove belts if they will be subjected to temperatures temperature can be controlled if possible. exceeding 85°... -
Page 5: Mechanical Installation
Mechanical Installation Mechanical Installation Service Clearances Rigging In addition to providing adequate space around the unit for Skyline air handlers ship as separate sections, completely piping coils and drains, access to at least one side of the unit is assembled, or in modules of assembled sections. The unit must always required to allow for regular service and routine be rigged as it ships from the factory. -
Page 6: Assembling Sections
Mechanical Installation Assembling Sections Handle units with curb-ready bases and vestibules so the lifting bracket can be removed after the unit is If the unit is shipped in more than one shipping section, rig placed on the curbing. each section into position separately. Shipping sections are Note: Remove the lifting bracket that projects inward over provided with a connection splice joint attached on the leaving the curbing. - Page 7 Mechanical Installation Handle units with curb-ready bases and vestibules so Figure 10: D-Gasket Placement Detail (Skyline Plus Units Only) the lifting bracket can be removed after the unit is placed on the curbing. Note: Remove the lifting bracket that projects inward over the curbing.
-
Page 8: Panels, Frame Channels, And Doors
Mechanical Installation Panels, Frame Channels, and Doors Fan Section Doors Note: Opening fan section doors requires using a 1/2" socket Panel Removal wrench (Figure 13), which satisfies ANSI standards and other codes that require the “use of tools” to access To remove a side or top panel, remove the flat head Torx 30 compartments containing moving parts or electrical fasteners along the sides of the panel. -
Page 9: Injected-Foam Insulated Panels
Mechanical Installation Injected-Foam Insulated Panels Figure 14: Cutting/Sealing Injected-Foam Insulated Panels Seal completely with silicone Skyline air handlers now are furnished with double-wall, sealant or duct seal compound injected-foam insulated panels. Foam panels are stronger, Cut hole from both sides of panel more rigid, and lighter than panels with fiberglass insulation. -
Page 10: Dampers And Hoods
Mechanical Installation If the unit has a top mixing box or economizer damper or a top Figure 18: Field-Installed Barrier Between Hoods duct connection, field fabricate and install flashing to divert moisture from the connection. The flashing must lap over the standing seams of the top panels. -
Page 11: Face And Bypass Section Mounting
Mechanical Installation Face and Bypass Section Mounting Piping and Coils Internal and external face and bypass sections are mounted When designing and installing piping: together using the instructions for horizontal components and • Follow applicable piping design, sizing, and installation do not require additional instruction. -
Page 12: Steam Coils
Mechanical Installation Steam Coils • Multiple coil installation—individually trap each coil or group of coils. Piping (see Figure • Coils in series—use separate traps for each coil, or a bank of • Steam supply and steam return connections typically are coils. - Page 13 Mechanical Installation Figure 21: Piping Arrangements Control valve Float and modulating Check Valve Strainer Gate Valve thermostatic trap two position High Pressure (over 25 psi) Vacuum breaker Steam main Steam main 1/2" check valve Vacuum breaker 1/2" check valve Return main 1/4"...
-
Page 14: Water Heating Coils
Mechanical Installation Water Heating Coils Figure 22: Allow Adequate Distance Between Trap Outlet and Drain Pan Outlet CAUTION Pressure (P) Improper installation, use, or maintenance of water heating at the drain pan coils can cause equipment damage. Read and follow instructions carefully. -
Page 15: Internal Isolation Assembly Adjustment
Mechanical Installation Internal Isolation Assembly Adjustment Table 2: Motor Behind Fan Spring Mount Adjustments Spring mount adjustment at rest On units with internally isolated fan and motor assemblies, the Fan discharge Top or bottom Downblast Upblast assemblies are secured for shipment. with a tie-down at each position horz. - Page 16 Mechanical Installation Figure 25: Removing “Motor Behind” Shipping Brackets Figure 26: Removing “Motor Beside” Shipping Brackets Unit sizes 006 - 090 Unit sizes 006 - 090 S h i p p i n g h o l d d o w n S h i p p i n g b r a c k e t r e m o v e a n d d i s c a r d r e m o v e a n d d i s c a r d...
-
Page 17: Electrical Installation
Electrical Installation Electrical Installation Wiring Figure 27: Electrical Conduit Location DANGER Capacitor hazardous voltage! Failure to disconnect power and discharge capacitors before servicing will result in serious injury or death. Disconnect all electric power (including remote disconnects) before servicing. Perform lockout/tagout procedures to ensure Fan Motor that power can not be energized. -
Page 18: Operation Guidelines
Operation Guidelines Operation Guidelines Startup Checks ATTENTION When performing startup and service, always take thorough Risques de dommages dans le moteur du ventilateur safety precautions. Only trained, experienced personnel should électrique. Si Ia température de l’air a proximité du perform these functions. ventilateurest élevée, le moteurdu ventilateur électrique peut chauffer et brûler. -
Page 19: Fan Wheel Alignment
Operation Guidelines Note: Variable pitch fan drives usually are provided for Table 4: Wheel-to-Inlet Funnel Relationship—Forward operation in the mid-speed adjustment range. However, Curved Type Fan Wheels the drives usually ship with the adjustment opened up for minimum fan speed. Adjust the drives for the proper Forward curved airflow. - Page 20 Operation Guidelines Figure 31: Wheel-to-Inlet Funnel Relationship—40 to 60 19.2 Plenum Fans 41.7 Cross Section Reference 41.7 41.7 41.7 41.7 41.7 FUNNEL END TO FAN 41.7 WHEEL OPENING EQUALLY SPACED AROUND DIAMETER Figure 32: Wheel-to-Inlet Funnel Relationship—Inline Fans Overlap Table 8: Wheel-to-Inlet Funnel Relationship—Inline Fans Wheel—funnel overlap Table 6: Wheel-to-Inlet Funnel Relationship—40 to 60 Plenum Fan...
-
Page 21: Operating Limits
Operation Guidelines Operating Limits Do not exceed the operating limits in Table 10. A fan wheel suffer permanent distortion or fracture. The resulting operated beyond the rpm and temperature limits shown can unbalance can cause severe unit vibration. Table 10: Unit Sizes 003 to 035 Fan operating limits Forward curved—housed Diameter... -
Page 22: Fan Vibration Levels
Operation Guidelines Table 12: Operating Limits—Plenum Fans Fan operating limits Plenum fans Diameter 13.5 16.5 18.25 22.25 24.5 36.5 40.25 44.50 54.25 Class Maximum rpm 3,909 3,468 2,820 2,930 2,674 2,403 2,183 1,860 1,783 1,620 1,465 1,329 1,202 1,091 Maximum motor HP Table 13: Operating Limits—Inline Fans, Twin Fans Fan operating limits Inline fans... -
Page 23: Service And Maintenance
Service and Maintenance Service and Maintenance Periodic Maintenance Compatibility of grease is critical. Relubricatable bearings are supplied with grease fittings or zerks for ease of lubrication Check all moving parts for wear every six months. with hand or automatic grease guns. Always wipe the fitting and grease nozzle clean. -
Page 24: Fan Drive
Service and Maintenance VM and VP Variable Pitch Key Type Sheaves Table 18: Recommended Fan Relubrication Grease Charge Shaft Size (in) Shaft Size Grams Mounting 1/2 to 3/4 0.03 20 mm 0.85 Mount all sheaves on the motor or driving shaft with the 7/8 to 1-3/16 0.10 25-30 mm... -
Page 25: Lvp Variable Speed Sheaves
Service and Maintenance LVP Variable Speed Sheaves Put on belts and adjust belt tension. Do not force belts over grooves. See Fan Drive Belt Adjustment‚ page Mounting Before starting the drive, ensure that all keys are in place Slide sheave on motor shaft so that the side of the sheave and all setscrews and all capscrews are tight. -
Page 26: Mvp Variable Speed Sheaves
Service and Maintenance MVP Variable Speed Sheaves Any pitch diameter can be obtained within the sheave range. One complete turn of the outer locking ring Mounting changes the pitch diameter 0.233". Verify both driving and driven sheaves are in alignment Do not open sheaves more than the following: and the shafts are parallel. - Page 27 Service and Maintenance Figure 40: Sheave Adjustment Must be parallel Bearing Center lines must coincide Motor Adjustable Sheave Must be parallel Figure 41: Sheave Adjustment F i x e d ( 2 ) L o c k i n g A d j u s t a b l e F l a t h e a d S o c k e t S c r e w s C e n t e r - F l a n g e...
-
Page 28: Fan Drive Belt Adjustment
Service and Maintenance Fan Drive Belt Adjustment WARNING General Rules of Tensioning The ideal tension is the lowest tension at which the belt Moving belt and fan can cause severe personal injury or death. does not slip under peak load conditions. During installation and filter maintenance: •... -
Page 29: Front Load Filter Option
Service and Maintenance Front Load Filter Option Table 21: Filter Pressure Drops Bag filters—DriPak 2000 Front loaded filter options require that the filters be removed Efficiency and replaced from inside the unit. Rated velocity (fpm) To remove filters, rotate the wire clips. This releases both the Initial pressure drop .20–.26 .21–30 .34–.48 .50–.70... -
Page 30: Winterizing Water Coils
Service and Maintenance Dirt and lint can clog the condensate drain, especially If fan replacement is required, the entire fan assembly can be with dirty filters. Inspect twice a year to help avoid pulled out the side of the cabinet. The fan assembly includes overflow. - Page 31 Service and Maintenance Figure 45: Single Coil Top Installation/Removal Removing Stacked Coils Note: Top and bottom stacked coils are held together with steel Opposite Connection plate and screws on one side and drain trough and connection screws on the other side. Remove the plate and trough before removing the coils.
-
Page 32: Parts
Parts Parts Replacement Parts When writing to McQuay for service or replacement parts, refer to the model number and serial number of the unit stamped on the serial plate attached to the unit. If replacement parts are required, mention the date of installation of the unit and date of failure, along with an explanation of the malfunctions and a description of the replacement parts required. -
Page 33: Service And Warranty Procedure
Defective material may not be returned without permission of Credit will be issued on customer's purchase order following authorized factory service personnel of McQuay International an inspection of the return part and upon determination that the in Minneapolis, Minnesota, (763) 553-5330. A “Return failure is due to faulty material or workmanship during the Goods”... -
Page 34: Check, Test, And Start Procedure Form
Check, Test, and Start Procedure Form Check, Test, and Start Procedure Form To comply with the terms of McQuay Warranty, complete and return this form within 10 days to McQuay Warranty Department. Check, test, and start procedure for McQuay Air Handling Units with or without heat recovery. Job Name:________________________________________ McQuay S.O. - Page 35 RETURN COMPLETED FORM WITHIN 10 DAYS OF START-UP TO: McQuay International Warranty Department, 13600 Industrial Park Boulevard, Minneapolis, MN 55441 Please list any additional comments that could affect the operation of this unit; e.g., shipping damage, failed components, adverse installation applications, etc., on a separate sheet and attach to this form.
-
Page 36: Quality Assurance Survey Report
Quality Assurance Survey Report Quality Assurance Survey Report Quality Assurance Survey Report To whom it may concern: Please review the items below upon receiving and installing our product. Mark N/A on any item that does not apply to the product. Job Name: _____________________________________________________ McQuay G.O. - Page 38 Warranty. Consult your local McQuay Representative for warranty details. Refer to Form 933-430285Y. To find your local McQuay Representative, go to www.mcquay.com. This document contains the most current product information as of this printing. For the most up-to-date product information, please go to www.mcquay.com. © 2011 McQuay International • www.mcquay.com • 800-432-1342 10/11...
Need help?
Do you have a question about the Skyline IM 777-6 and is the answer not in the manual?
Questions and answers