Installation and Maintenance Manual Destiny™ Air Handler IM 782-4 Group: Applied Air Part Number: IM 782 Date: March 2009 Sizes 002 to 030 © 2009 McQuay International
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 General Information . . . . . . . . . . . . . . . . . . . . . . . 3 Smoke Control and Management Systems. . . 3 Receiving and Handling . . . . . . . . . . . . . . . . . 4 Storing the Unit . . . . . . . . . . . . . . . . . . . . . . . . 4 Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . 5 Attaching the Mixing Box . . . . . . . . . . . . . . . . . . . 5 Service Clearances . . . . . . . . . . . . . . . . .
Introduction General Information Introduction WARNING Improper installation or maintenance can cause equipment damage or personal injury. Installation and maintenance must be performed by qualified personnel familiar with applicable codes and regulations, and experienced with this type of equipment. AVERTISSEMENT Une installation ou un entretien inadéquats peut endommager l’équipement ou entraîner des blessures personnelles.
Introduction Receiving and Handling 1 Carefully check items against the bills of lading to verify all crates and cartons were received. Carefully inspect all units for damage when received. Report visible and concealed damage immediately to the carrier and a file a claim for damage. 2 Destiny air handler units are thoroughly inspected before leaving the factory. Install units carefully to prevent damage.
Installation Guidelines Attaching the Mixing Box Installation Guidelines Mixing boxes ship with Destiny units as a field-installed option. Attach the mixing box to the intake end of the air handler using cleats included with the mixing box section. Install the cleats into the interior mounting frames, with the hardware included as shown in Figure 1.
Installation Guidelines Service Clearances Leave adequate space around the unit for piping, coils, and drains. Always have access to at least one side of the unit for regular service and maintenance. See Figure 2 for servicing space requirements. Routine maintenance examples include filter replacement, drain pan inspection and cleaning, fan bearing lubrication, and belt adjustment.
Installation Guidelines Rigging Unit Leveling Rig units using straps or a sling. Fasten strapping under the skid that ships with the section. If a field-installed mixing box is attached, adjust to balance the unit properly. Place the equipment on a flat and level surface (or verify that unit is level when hanging from the ceiling). Where the surface irregularities allow the equipment to distort, shim the base of the unit to a straight line.
Installation Guidelines Panels and Doors DANGER 2 Rotate door handle 1/4 turn and open the door. Figure 6: Fan Section Doors Hazardous moving parts, high static pressure, and/or high voltage. Can cause severe injury or death. Disconnect and lock ALL electric power off before entering or servicing unit. Unit may employ multiple power supplies and/or remote disconnects. Secure drive sheaves to prevent motors and fan from free wheeling.
Installation Guidelines Figure 7: Factory Mounted Actuator For good air flow control, adjust the linkage so that the damper blades do not open beyond 70°. Opening a damper blade beyond 70° will have little effect on unit performance. Do not “over-close” the low-leak damper blades as the blades may lock up if the accompanying seal goes over the center of the adjoining blade. Instead, close the damper blades until the edge seal just lightly contacts the adjoining blade.
Installation Guidelines Reversing the Coil Handing Coil connections can be switched to the opposite side of the unit by rotating the coil(s) 180 degrees side to side and reworking the coil section panel on the opposite side of the air handler. Note: Direct expansion (DX) coils require 180 degree rotation on the top to bottom to locate distributor tubes at the leaving face of the coil. CAUTION Sharp edges and coil surfaces can cause personal injury. Avoid contact with them.
Installation Guidelines Figure 11: Reversing the Coil Handing screws 1 Remove from the upper track that hold coil/drain pan in place holes in coil header plate 7 Drill flanges, position block offs and install screws to secure to coil. Airflow drain pan connection 2 Lift up and slide coil/drain pan assembly out. locations 8 Mark and drill holes to align with holes in upper track. screws and 3 Remove remove coil blockoffs.
Installation Guidelines Reversing the Drive Package Hanging the Unit from a Ceiling A motor side or “hand” is determined by looking in the direction of air flow with the air contacting the back of the head. The drive package on the air handler can be changed to the other side of the blower. The motor base and motor are attached to back of the fan housing. They can be removed, rotated 180 degrees, and reattached. The fan sheave can be removed and reinstalled on the opposite end of the shaft (Figure 12).
Installation Guidelines Piping and Coils Figure 15: DX Coil Connections LIQUID CONNECTION Follow applicable piping design, sizing, and installation information presented in ASHRAE Handbooks in the design and installation of piping. Observe all local codes and industry standards. Do not apply undue stress at the connection to the coil headers. Support pipe work independently of the coils. Water Cooling Coils Water cooling coil guidelines are listed below. Refer to Figure 10.
Installation Guidelines 10 Use float and thermostatic or bucket traps with low pressure steam. On high pressure steam, use bucket traps. Use thermostatic traps only for air venting. 11 Use bucket traps only with on/off control. 12 Locate traps at least 12 inches below the coil return connection. 5 Hot water coils are not recommended for use with entering air below 40°F.
Installation Guidelines Drain Pan Traps Figure 20: Removing the Shipping Bracket, Sizes 002–010 Destiny air handlers have a drain pan connection on both sides of the unit. Drain connections can be made on either side or both sides. Drain lines and traps should run full size from the drain pan connection. Drain pans should have traps to allow condensate from coils to drain freely.
Installation Guidelines Electric Heat Section (Optional) Single Point Power Optional factory installed electric heat section consists of open coil duct heater mounted to the unit at the supply fan discharge. Heat section includes heating coils and an electrical control box with single point field power connection for heater and supply air fan. Factory provided field knockouts are located on the side of the electric heat control panel for field power and control wiring to pass through.
Installation Guidelines Electric Heat kW Options Table 2: KW Options by Unit Size KW Range 002 1.5 10 003 2.5 20 Unit Size 004 005 2.5 4 - 26 20 007 010 6 - 38 6 - 55 Heater Amps Table 3: Heater Amps KW Voltage 120 240 240 480 600 Phase 1 1 3 3 3 1 8.33 4.17 2.41 1.20 0.96 1.5 12.50 6.25 3.61 1.81 1.45 2 16.67 8.33 4.82 2.41 1.93 2.5 20.83 10.42 6.02 3.01 2.41 3 25.00 12.50 7.23 3.61 2.89 3.5 29.17 14.58 8.43 4.21 3.37 4 33.33 16.67 9.63 4.82 3.85 4.5 37.50 18.75 10.84 5.42 4.34 5 41.
Installation Guidelines Minimum Air Velocity Recommended minimum air flow through a specific heater is shown in the following tables. Table 4: LAH002 Minimum Air Velocity Heater Capacity, kW 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 Minimum air flow, CFM 184 218 249 274 292 310 328 344 359 371 382 387 398 396 400 Heater Capacity, kW 9 10 Minimum air flow, CFM 404 409 Table 5: LAH003 Minimum Air Velocity Heater Capacity, kW 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.
Installation Guidelines Electric Heat Operation The sampling probe is suitable for left-hand or right-hand airflow and in positive pressure applications may require field adjustment so the probe faces upstream. This is normally done during installation by removing two screws, rotating the probe 180° and replacing the screws. Removing the heater from the duct is not necessary.
Installation Guidelines Variable Frequency Drive (VFD) - Optional Starters and Disconnect - Optional 1 When the unit is provided with a VFD only, refer to the VFD manual for wire size and torque requirements. A fastblow fused disconnect is recommended for VFD applications. Motor operation below 20 Hz is not recommended. For typical wiring diagrams, see Figure 29 and Figure 30. 2 Refer to OM 844-1 (MD2 drives) or OM 895 (MD3 drives) for VFD set-up details.
Wiring Diagrams Electric Heat Diagrams Wiring Diagrams Figure 25: Typical 1-Phase, 240 Volt Electric Heat Wiring Diagram 1 step, 1 phase, 240 VAC, 60 Hz McQuay IM 782-4 21
Wiring Diagrams Figure 26: Typical 3-Phase, 575 Volt Electric Heat Wiring Diagram 4 steps, 3 phase, 575 VAC, 60 Hz 22 McQuay IM 782-4
Wiring Diagrams Disconnect-Only Diagrams Figure 27: Typical 1-Phase, 208 Volt Disconnect-Only Wiring Diagram McQuay IM 782-4 23
Wiring Diagrams Figure 28: Typical 3-Phase, 480 Volt Disconnect-Only Wiring Diagram 24 McQuay IM 782-4
Wiring Diagrams VFD Diagrams Figure 29: Typical MD2 VFD Wiring Diagram McQuay IM 782-4 25
Wiring Diagrams Figure 30: Typical MD3 VFD Wiring Diagram 26 McQuay IM 782-4
Wiring Diagrams Figure 31: Typical 208 Volt Starter/Disconnect Wiring Diagram McQuay IM 782-4 27
Wiring Diagrams Figure 32: Typical 480 Volt Starter/Disconnect Wiring Diagram 28 McQuay IM 782-4
Physical Data Component and Section Weights Physical Data Table 11: Unit Coil Weights Weight—lbs (kg) Coil type 4-row chilled water 6-row chilled water 1-row hot water 2-row hot water 4-row DX 6-row DX 002 003 004 005 007 010 015 020 025 030 31.64 (14.35) 39.94 (18.12) 16.11 (7.31) 24.36 (11.05) 32.73 (14.85) 43.37 (19.67) 40.56 (18.40) 54.81 (24.86) 19.95 (9.05) 29.96 (13.59) 42.91 (19.46) 57.01 (25.86) 54.30 (24.64) 69.01 (31.30) 28.36 (12.86) 38.07 (17.27) 50.11 (22.73) 71.53 (32.45) 59.
Physical Data Table 13: Base Unit Cabinet Weights—Vertical Unit Weight—lbs (kg) Configuration Unit size Configuration No heat Reheat coil No heat* Reheat coil No heat* Reheat coil Flat filters Flat filters Flat filters Flat filters Flat filters Flat filters Cooling coil Cooling coil Fan Fan Fan Fan Fan Fan 002 003 004 005 007 010 015 020 025 030 Note: Configuration 134.70 (61.10) 183.20 (83.10) 209.79 (95.16) 239.00 (108.40) 349.08 (158.30) 399.23 (181.09) 484.20 (219.63) 566.
Performance Data Fan Data Performance Data Table 16: Fan Data Unit size Fan data 002 003 004 005 007 010 015 020 025 030 DWDI FC 7/7 .50–2 DWDI FC 9/9 .50–3 DWDI FC 9/9 .5–5 DWDI FC 10/10 .75–5 DWDI FC 12/12 1–5 DWDI FC 12/12 1–7.
Performance Data Coil Data Table 18: Coil Data—Chilled Water Chilled water coil data Fin height Fin length Rows FPI Connection material Connection size 4-row Connection size 6-row Casing Unit size 002 003 004 005 007 010 015 020 025 030 14 21 4, 6 12 Copper sweat 16 27 4, 6 12 Copper sweat 16 34 4, 6 12 Copper sweat 22 34 4, 6 12 Copper sweat 22 48 4, 6 12 Copper sweat 26 54 4, 6 12 Copper sweat 32.5 65 4, 6 12 Steel NPT 45 65 4, 6 12 Steel NPT 45 80 4, 6 12 Steel NPT 52.
Performance Data Drain Pan Data Table 21: Drain Pan Connections Standard and optional stainless steel Arrangement Connection size - Main Connection size - Secondary Unit size 002 003 004 005 007 010 015 020 025 030 Sloped Sloped Sloped Sloped Sloped Sloped 1" ID MPT 1" ID MPT 1" ID MPT 1" ID MPT 1" ID MPT 1" ID MPT 1/2" ID MPT 1/2" ID MPT 1/2" ID MPT 1/2" ID MPT 1/2" ID MPT 1/2" ID MPT Sloped 1-1/4" ID MPT 1/2" ID MPT Sloped 1-1/4" ID MPT 1/2" ID MPT Sloped 1-1/4" ID MPT 1/2"
Dimensional Data Cabinet Dimensions—Horizontal Dimensional Data Table 23: Cabinet Dimensions—Horizontal Unit Dimension/ Configuration Unit size 002 003 004 20.47 (520) 28.54 (725) 22.44 (570) 34.84 (885) 22.44 (570) 42.52 (1080) Cabinet Dimension Height Width Cooling with preheat coils Heating only Ventilation only Flat filter Angular filter Flat filter Angular filter Flat filter Angular filter Flat filter Angular filter Width Note: 010 015 020 025 030 28.35 (720) 42.52 (1080) 28.
Dimensional Data Cabinet Dimensions—Vertical Table 24: Cabinet Dimensions—Vertical Unit Dimensions Unit size 002 003 004 Cabinet Dimension Width—in (mm) Length—in (mm) Upper section height—in (mm) Lower section height—in (mm) Width—in (mm) Note: 007 010 015 020 025 030 75.00 (1905) 47.83 (1215) 26.97 (685) 51.57 (1310) 89.96 (2285) 51.18 (1300) 31.30 (795) 51.57 (1310) 89.96 (2285) 51.18 (1300) 31.30 (795) 59.06 (1500) 15.51* (394) 13.46 (342) 18.54* (471) 15.83 (402) 18.54* (471) 15.
Dimensional Data Mixing Box Dimensions Table 25: Mixing Box Dimensions—Horizontal and Vertical Units Unit size 002 003 004 005 007 010 015 020 025 030 Cabinet in. (mm) Damper in. (mm) W H L W1 L1 28.54 (725) 34.84 (885) 42.52 (1080) 42.52 (1080) 56.50 (1435) 62.99 (1600) 74.41 (1890) 75.00 (1905) 89.96 (2285) 89.96 (2285) 20.47 (520) 22.44 (570) 22.44 (570) 28.35 (720) 28.35 (720) 32.48 (825) 39.37 (1000) 51.57 (1310) 51.57 (1310) 59.06 (1500) 10.24 (260) 10.24 (260) 10.24 (260) 14.17 (360) 14.
Dimensional Data Electric Heat Dimensions—Left/Right Oriented Table 26: Electric Heat Dimensions - in. (mm), Sizes 002 through 004 Dimension -in.
Dimensional Data Control Box Dimensions Table 28: Control Box Dimensions – Left and Right Hand Access Dimension/ Configuration Unit size 002 003 004 005 Disconnect/Starter/ Transformer Width Depth Height Depth Height 010 015 020 025 030 12 (305) 6 (152) 20 (508) 12 (305) 6 (152) 20 (508) 12 (305) 6 (152) 20 (508) 12 (305) 6 (152) 20 (508) 10 (254) 6 (152) 12 (305) 10 (254) 6 (152) 12 (305) 10 (254) 6 (152) 12 (305) 10 (254) 6 (152) 12 (305) Dimensions in.
Operation Guidelines Startup Checks Operation Guidelines When performing startup and service, always take thorough safety precautions. Start-up functions must be performed by trained, experienced personnel. WARNING ROTATING FAN. Can cause severe injury or death. Before servicing fans, lockout and tag out power. AVERTISSEMENT PIÈCES MOBILES DANGEREUSES. Avant de réparer ou entretenir les ventilateurs, coupez l’alimentation èlectrique de cet appareil et bloquez le commutateur à OFF.
Operation Guidelines 8 Check that condensate drain is trapped. suffer permanent distortion or fracture. The resulting unbalance may cause severe unit vibration. 9 Rotate shaft by hand to be sure it is free. 10 Fan startup: Fan should start and run. Observe the Table 30: Fan Operating Limits rotation. If the fan is operating backward, reverse two legs of the three-phase supply power. Note: Variable pitch fan drives are usually provided for operation in the mid-speed adjustment range.
Service and Maintenance Periodic Service and Maintenance Service and Maintenance 1 Check all moving parts for wear every six months. Table 32: Lubricants Recommended for Fan Shaft Ball Bearings 2 Check bearing collar, sheave, and wheel hub setscrews, sheave capscrews, and bearing hold-down bolts for tightness every six months. Ball Bearing Lubrication 1 Motor bearings—All ball bearings are prelubricated and do not require additional grease during installation.
Service and Maintenance 2 Verify that both driving and driven sheaves are in Figure 39: VP Type Sheave Adjustment alignment and that shafts are parallel. A B 3 Fit internal key D between sheave and shaft and lock setscrew A securely in place. E Adjusting: 1 Loosen setscrews B and C in moving parts of sheave and pull out external key E. (This key projects a small Single groove D amount to provide a grip for removing.
Service and Maintenance 7 Insert key F. 5 Adjust pitch diameter by opening or closing the movable flanges by half or full turns. (Two-groove sheaves are supplied with both grooves set at the same pitch diameter.) Move both movable flanges the same number of turns to provide the same pitch diameter for satisfactory operation. Do not open sheaves more than five turns for A belts or six turns for B belts. 8 Tighten setscrews D and capscrews E. 9 Put on belts and adjust belt tension.
Service and Maintenance Figure 41: Sheave Adjustment Must be parallel Bearing Center lines must coincide Motor Adjustable sheave Must be parallel Table 33: Screw Torque Values Nominal screw size (dia-thds/in) Hollow head setscrews only Socket head cap screws Flat head socket screws Seating torque Seating torque Seating torque Seating torque Length (L) Seating torque (in-lbs) (in-lbs) (ft-lbs) (in) (in-lbs) (in-lbs) (ft-lbs) Lengths equal or greater than diameter For lengths (L) less
Service and Maintenance Fan Drive Belt Adjustment Figure 43: Drive Belt Adjustment Deflection = General Rules of Tensioning 1 The ideal tension is the lowest tension at which the belt does not slip under peak load conditions. Belt span 64 Belt span 2 Check tension frequently during the first 24 to 48 hours of operation. 3 Over tensioning shortens belt and bearing life. 4 Keep belts free from foreign material, which may cause slippage. 5 Make V-drive inspection on a periodic basis.
Service and Maintenance Coil Maintenance CAUTION SHARP EDGES AND COIL SURFACES are a potential injury hazard. Avoid contact with them. ATTENTION Les bords tranchants et les surfaces des bobines sont un risque de blessure. Ne les touchez pas. 1 For maximum performance, the coil must be clean. Check once a year under normal operating conditions and brush or vacuum clean if necessary. Use a chemical coil cleaner on multiple row coils.
Warranty Warranty Details 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. Warranty Return Material Procedure Defective material may not be returned without permission of authorized factory service personnel of McQuay International in Minneapolis, Minnesota, (763) 553-5330. A “Return Goods” tag must be included with the returned material.
Warranty Destiny Equipment Warranty Registration 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. Job Name:________________________________________ McQuay S.O. No.: _________________ McQuay G.O. No.
Warranty H. Operate electric heat with fans off. Electric heat must cycle OFF on high limit control.. . . . . . . . . . . . . . . . . . . . . . . . . Yes No N/A A. Pressure test okay? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yes No N/A B. Drain pan draining okay? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty 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. no.
McQuay Training and Development Now that you have made an investment in modern, efficient McQuay equipment, its care should be a high priority. For training information on all McQuay HVAC products, please visit us at www.mcquay.com and click on training, or call 540-248-9646 and ask for the Training Department. Warranty All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product Warranty. Consult your local McQuay Representative for warranty details.
