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Summary of Contents for McQuay RoofPak RAH 077C
- Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
- Page 2 Part Number: IM 487 Date: December 2004 RoofPak Applied Rooftop Systems ™ Air Handler RAH 047C–077C 12000 to 50000 cfm RDS 800C–802C 4000 to 20000 cfm © 2004 McQuay International Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 3: Table Of Contents
McQuay and MicroTech II are registered trademarks of McQuay International. Microsoft is a registered trademark of Microsoft Corporation. Windows is a trademark of Microsoft Corporation. Copyright © 2004 McQuay International. All rights reserved throughout the world. Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 4: Introduction
Introduction Introduction This manual provides general information about the “C” vintage McQuay RoofPak applied rooftop unit, models RDS Table 1: Program specific rooftop unit operation literature and RAH. In addition to an overall description of the unit, it Operation manual bulletin... -
Page 5: Typical Component Locations
Optional return air fan Main control panel (optional) Filter section Heat section natural gas, steam, hot water, electric) Optional outside louvers (both sides) Optional back return air McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 6 Optional return Supply air fan air fan Steam/hot water Filter section Optional outside louvers Main control panel (both sides) (optional) Optional back return air McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 7 Mixing box Supply air fan Filter section Main control panel Final filter Fresh air hood (optional) cartridge Heat section (natural gas, steam hot water, electric) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 8: Typical Unit Sections
BLANK BLANK BLANK STAGG STAGG MIXING BOX ECON. W/PROP. EXH. FANS, BOTTOM OR BACK RET. FANS ECON. W/PROP. EXH. FANS, & SIDE RET. FANS McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 9 FANS, BOTTOM OR BACK RET. FANS ECON W/PROP. EXH. FANS, BOTTOM & SIDE RET. FANS Note: Views shown for 047C family. Not to scale McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 10: Control Locations
SV5, 6 (optional) LT10 (optional) C19, 20 (optional) S10, REC10 (optional) SD1 (optional) (optional) (optional) ACT3 ACT6 (optional) LT11 (optional) S11, REC11 (optional) (optional) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 11: Control Panel
Specific unit configurations may differ slightly following figures. These figures show a typical unit from these figures depending on the particular unit options. Figure 8. Control panel locations McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 12 F1A F1B F1C See separate detail, page 19 GND LUG DS1 TB3, TB2, first seven remaining SPS1,2 fittings blocks blocks for static pressure tubing McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 13 Introduction Figure 10. Typical main control panel, 047C, 460 volt McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 14 Introduction Figure 11. Typical main control panel, 077C, 460 volt McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 15 Figure 15. Electric heat panel, sizes 800, 802C FSG Time FB33 FB32 FB31 Figure 13. Typical propeller exhaust panel, three fans, 460 volt FB43 FB42 FB41 TB11 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 16 Figure 17. Electric heat panel, 077C FB33 FB32 FB31 FB33 FB32 FB31 FB44 FB34 FB43 FB42 FB41 TB11 FB43 FB42 FB41 TB11 GLG3 GLG3 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 17 RATS DATS OATS EPTS OPEN1 AFD10 AFD20 SV12 SV56 ACT3 OPEN2 HL22 OPEN3 GSHT1 GSHT2 DFRH DFLH OPEN4 LT10 LT11 LT OP1 LT OP2 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 18: Controls, Settings, And Functions
Shuts off entire control circuit System switch Main control box 001355000 (except crankcase heaters) ON-OFF-AUTO Used to manually switch unit Main control box switch McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 19: Mechanical Installation
Allow service clearance approximately as indicated in personnel. Figure 19. Also, McQuay recommends providing a roof walkway to the rooftop unit as well as along at least the two Receiving Inspection sides of the unit that provide access to most controls and When the equipment is received, all items should be carefully serviceable components. -
Page 20: Ventilation Clearance
96" (2438 mm) on all sides of the unit. The distance between any two units within the walls should be at least 120" (3048 mm). McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 21: Overhead Clearance
On units with side discharge, access to plenum-mounted components becomes difficult once ductwork is installed. Installer must provide access in the ductwork for plenum mounted controls McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 22 Be sure that electrical connections are coordinated (see and M may be included with the roof curb kit to create the Figure 26). correct overall curb length. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 23 2 × 4 nailer strip Counterflashing (not furnished) Flashing (not furnished) Rigid insulation Cant strip Roffing material (not furnished) (not furnished) (not furnished) Galvanized curb Main unit curb McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 24 82.0 2083 30" AF 30.0 76.0 1930 30" AF 30.0 76.0 1930 40" AF 36.0 78.0 1981 14.8 40" AF 36.0 78.0 1981 14.8 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 25: Post And Rail Mounting
Seal cabinet penetrations (electrical, piping, etc.) properly to protect against moisture and weather. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 26: Rigging And Handling
Lift only as indicated CAUTION Lifting points may not be symmetrical to the center of gravity of the unit. Ballast or unequal cable lengths may be required. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 27 RAH 77: B Min. = 120" (3048 mm) 0–100% economizer with 30" return fan 52" (1321 mm) 52" (1321 mm) 0–100% economizer with 40" return fan — 80" (2032 mm) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 28: Split Units
Discharge end of unit Remove screws on fan panel, Fan end of unit leaving retainer clips in place. Save screws for reassembly. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 29 Splice cover, provided #10 screws, Caulk provided vertical seam See detail Nut clip-on, provided Install screws (.25 to 20 × .75) saved from step 1 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 30 Make all electrical connections per the unit’s electrical schematics. Reinstall the external raceway covers after routing of the control wires is complete. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 31 WARNING Do not use oxygen or air to build up pressure. Explosion hazard can cause severe personal injury or death. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 32 Important: At this point, interrupt the charging procedure and do prestart checks before attempting to complete the refrigerant charge. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 33: Unit Piping
12,400 3.180 4.720 3 1/8" 4.728 336.00 17.700 4.550 6.750 3 5/8" 6.398 456.00 24.000 6.150 9.140 4 1/8" 8.313 592.00 31.100 8.000 11.190 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 34 M i n . o r 2 x " P " D i m e n s i o n building. V i e w McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 35: Steam Coil Piping (All Units)
The freezing of coils is not the entering air temperatures below 40°F (4°C). No control system responsibility of McQuay International. Refer to “Winterizing can guarantee a 100% safeguard against coil freeze-up. Glycol Water Coils” on page 109. -
Page 36: Steam Piping Recommendations
Pitch all supply and return steam piping down a minimum of 1" (25 mm) per 10 feet (3 m) of direction of flow. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 37 S e t s c r e w s Figure 39. Steam valve package S u p p l y R e t u r n McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 38 (915 + contractor coil (4.18 m²) — — — — — 2006 mm) section — — — — — — — — — — McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 39 T = One 2.62 inch O.D supply and one 2.62 O.D. return connections U = One 2.12 inch O.D supply and one 2.12 O.D. return connections McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 40: Vestibule Assembly Instructions
Save door latch assembly, screws and bushings for Step 4. Figure 41. Step 1 illustration Gasketing Door Prop Door Door Latch Assembly McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 41 Sealant Gasketing Upright Angle #10 Screw #10 Drill Screw Silicone Sealant Door Prop Door Latch Assembly (See Note) Door Upright Gasketing #10 Screw Angle McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 42: Damper Assemblies
Open Closed Stroke Open Closed .25" (6mm) .500 (13mm) Dia. Shaft x 1.30" (33mm) Long 3.00 RAH 047C - 077C RDS 800C & 802C McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 43 Figure 46 shows the RAH 47–77 (The linkage is on the Note: RH side). The RDS 800–802 are the same except the linkage is on the LH side. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 44 Figure 48. Mixing box STROKE OPEN CLOSED .25" (6 mm) CLOSED .75" (19 mm) 3.00" OPEN (76 mm) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 45 Figure 50. Face and bypass dampers, staggered arrangement–RAH 47–77 only Face Damper Open Stroke .25" (6mm) Closed Airflow 3.00" .75" (76mm) (19mm) Bypass Damper McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 46: Cabinet Weather Protection
Transportation, rigging, or maintenance can damage the unit’s weather seal. Periodically inspect the unit for leakage. Standing moisture can promote microbial growth, disease, or damage to the equipment and building. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 47: Installing Ductwork
Where return air ducts are not required, connect a sound absorbing T or L section to the unit return to reduce noise On bottom-supply/bottom-return units if a McQuay roof curb transmission to the occupied space. is not used, installing contractor should make an airtight... -
Page 48: Installing Duct Static Pressure Sensor Taps
Use different colored tubing for the duct pressure (HI) and reference pressure (LO) taps, or tag the tubes. McQuay recommends ¼" plastic tubing. Locate the duct pressure (HI) tap near the end of a long duct to ensure that all terminal box take-offs along the run have adequate static pressure. -
Page 49: Installing Building Static Pressure Sensor Taps
Mount it high enough above the roof so it is not affected by snow. Not connecting the reference tap to the sensor results in unsatisfactory operation. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 50: Electrical Installation
(PB1) these specifications. An open fuse, tripped circuit breaker, or 3" power Manual Motor Protector (MMP) indicates a short, ground, or knockouts McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 51 Detail B 3.0 Dia. K.O. 0.9 Dia. K.O. (Qty 3) (Qty 4) Reference from leaving air end of section 11.9 12.9 15.3 17.7 22.3 24.3 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 52 2.All wire sizes based on NEC Table 310-16 for 75°C THW wire (copper). Canadian electrical code wire ampacities may vary. 3.All wire sizes assume no voltage drop for short power leads. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 53: Field Control Wiring
TB2. box to unit-mounted Reinstall and secure all protective deadfront panels when the control devices) wiring installation is complete. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 54: Preparing Unit For Operation
Access is from inside the economizer section. This bracket is added, and these 3/8" tie downs are used for RDS 800C. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 55: Adjusting Scroll Dampers
2. Turn nut C until spring cup and washer contact thrust restraint angle. 3. Turn nut B until spring is compressed by two turns of nut B . 4. Tighten jam nuts A . McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 56: Adjusting Seismic Restraints
Removing the neoprene center bumper bolt allows removal, bumper. disassembly, and replacement of the neoprene components. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 57: Sequences Of Operation
• M40A to energize the return fan VFD (line 430) • Heating control panel (line 603) • Compressor circuit switches CS1 and CS2 (lines 805 and 838) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 58: Fan Operation
MMPs triggers an auxiliary contacts (line 426) and open the circuit, causing both fans to stop. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 59: Heating
MCB-BO9 energizes (line 633), VM1 modulates toward closed and the firing rate decreases. When both MCB-BO10 and MCB-BO9 are open, VM1 holds its position and the firing rate remains constant. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 60: Wiring Diagrams
Limit switch, low fire, high fire Gas heat box sensor LT10–23 Light, cabinet sections Supply fan section EHB1 Staged electric heat board Main control box McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 61 Relay, heat alarm, gas Main control box Transformer, dew point Main control box controller (115/24VAC) Relay, heat, gas, start supply Main control box fan inverter McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 62 General Notes Field wiring Factory wiring Shielded wire/cable Main control box terminals Auxilliary box terminals Field terminals Plug connector 200/ H200 Wire/harness number Wire nut/ID McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 63 Wiring Diagrams Figure 67. Power package only, main power McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 64 Wiring Diagrams Figure 68. Power package only, main power, continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 65 Wiring Diagrams Figure 69. Power package only, control power McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 66 Wiring Diagrams Figure 70. Power package only, control power, continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 67 Wiring Diagrams Figure 71. VAV fan power (with SAF and RAF VFDs and manual bypass) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 68 Wiring Diagrams Figure 72. VAV fan power (with SAF and RAF VFDs and manual bypass), continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 69 Wiring Diagrams Figure 73. CV fan power (SAF and RAF) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 70 Wiring Diagrams Figure 74. CV fan power (SAF and RAF), continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 71 Wiring Diagrams Figure 75. VAV control inputs McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 72 Wiring Diagrams Figure 76. VAV control inputs, continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 73 Wiring Diagrams Figure 77. CV control inputs McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 74 Wiring Diagrams Figure 78. CV control inputs, continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 75 Wiring Diagrams Figure 79. Control actuator outputs (CV, stream, or hot water, plus economizer) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 76 Wiring Diagrams Figure 80. Control actuator outputs (CV, stream, or hot water, plus economizer), continued H343-9 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 77 Wiring Diagrams Figure 81. VFD control (SAF and RAF) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 78 Wiring Diagrams Figure 82. VFD control (SAF and RAF), continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 79 Wiring Diagrams Figure 83. Super Mod gas furnace control (1000 MBH) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 80 Wiring Diagrams Figure 84. Super Mod gas furnace control (1000 MBH), continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 81 Wiring Diagrams Figure 85. Standard Mod, furnace control (1000 MBH) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 82 Wiring Diagrams Figure 86. Standard Mod, furnace control (1000 MBH), continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 83 Wiring Diagrams Figure 87. Electric heat control McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 84 Wiring Diagrams Figure 88. Electric heat control, continued McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 85 Wiring Diagrams Figure 89. Fan control, power package only /1.68 115VAC_GF/1 T1_N SUPPLY FAN ON/OFF MMP10 MMP20 426D 426A 426B 426C RETURN FAN ON/OFF 431A McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 86 1004B G1004 1005A 1005B LT10 PL31 H1006-1 PL31 H775 H1006-2 REC10 H775 H776 G1009 LT11 PL32 PL32 H1010-1 H775 H1010-2 REC11 H775 H776 G1012 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 87: Unit Options
For more information, see the “Digital Inputs” section of Bulletin No. IM 696, “MicroTech II Applied Rooftop Unit Controller.” McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 88: Smoke And Fire Protection
The MicroTech II controller’s active alarm is “Freeze Fault.” McQuay optionally offers factory installed outdoor air, return When the 10-minute timer expires, the controller begins checking the freezestat air, and exhaust air dampers as well as smoke detectors in the again. -
Page 89: Duct High Pressure Limit
(UI) is available as an option with all rooftop Keypad/Display units. The following items are provided: Module • Unit mounted UI Figure 94. Remote user interface wiring diagram McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 90: Variable Frequency Drive Operation
The swinging vane on the measurement station is locked in The plate should be flat against the outer surface of the place for shipment. Unlock it by removing the two shipping vane. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 91 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 92 .25-20 NC jam nuts on the threaded rod to make larger Right hand adjuster Left hand adjuster adjustments (see Figure 100). McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 93: Propeller Exhaust Fan Option
Any increase in fan speed represents a substantial increase in horsepower required from the motor. Always check motor load amperage and compare to name plate rating when changing fan speed. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 94 6. M otor pu lley 7. S haft pu lley 8. F an sh aft 9. B earings 10. B elt 11. B earing pl ate McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 95: Exhaust Fan On/Off Control
MCB-B02 on the Main Control Board. For detailed information on Propeller Exhaust Fan Control, refer to the operation manual supplied with the unit (OM 138 or OM 137). McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 96: Ultraviolet Light Operation
To turn the lights off, disconnect power to the entire the UV lights. unit, or open system switch S1. Figure 107. Typical ultraviolet light wiring schematic McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 97: Check, Test, And Start Procedures
Verify that all construction debris is removed, and that the sign the check, test, and start form supplied with the unit and filters are clean. return it to McQuay International. Verify that all electrical work is complete and properly WARNING terminated. -
Page 98: Power Up
If this is the case, repeat this procedure on another day when the opposite outdoor air enthalpy conditions exist. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 99: Heating System Start-Up
If the unit loses power, the spring in the actuator should drive the valve wide open to the coil. Check this by opening system switch S1. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 100: Sheave Alignment
A d j u s t a b l e S h e a v e M u s t b e p a r a l l e l McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 101: Mounting And Adjusting Motor Sheaves
Replace external key E and securely tighten setscrews B base closer to the fan shaft over the key. Tighten setscrews C into the keyway in the fixed half of the sheave. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 102 S p a n n e r W r e n c h 3 C a p s c r e w s " B " H o l e McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 103 C e n t e r F l a n g e H e r e A s s e m b l y McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 104: Final Control Settings
Mode= from OFF to AUTO. normal unit operation: Maintaining Control Parameter Records Temperature \ Zone Cooling \ McQuay recommends that the MicroTech II controller’s Temperature \ Zone Heating \ setpoints and parameters be recorded and saved for future Temperature \ Discharge Cooling \ reference. -
Page 105: Keypad Accessible Menu Structure
Final Control Settings Figure 114. Keypad accessible menu structure Keypad accessible menu structure McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 106 Final Control Settings Figure 114. Keypad accessible menu structure (continued) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 107 Final Control Settings Figure 114. Keypad accessible menu structure (continued) McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 108: Maintenance
Exercise caution when servicing equipment. Servicing Control Panel Components Location • The McQuay Rooftop Airhandling Unit is an outdoor unit. Disconnect all electric power to the unit when servicing However, the schedule may dictate storage either on the control panel components. Before servicing, always inspect ground or in its final position at the site. -
Page 109: Gas Furnace
Control Compartment Insert a grease fitting into the upper hole and add a small McQuay International recommends that the electronic amount of clean grease with a low pressure gun. control equipment in the unit be stored in a 5% to 95% RH Run the motor for five minutes before replacing the plugs. -
Page 110: Setscrews
Check bearing collar, sheave, and wheel hub setscrews, Table 19. Remove the fan shaft support and re-tension the sheave capscrews, and bearing hold-down bolts for belts. tightness every six months. McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 111: Supply Fan Wheel-To-Funnel Alignment
. 2 5 " Table 21: SWSI airfoil wheel-to-funnel relationship Wheel-to-funnel relationship (in inches) Wheel diameter “A” 0.62 F u n n e l McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... -
Page 112: Winterizing Water Coils
The MMP trip points are factory set. Do not change unless the motor ampacity changes or the MMP is replaced with a new McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com... - Page 113 Figure 123. Through-the-door handle disconnect Figure 122. Circuit breaker ON position OFF position McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 114 Figure 125) Figure 125. Phase voltage monitor Standard 1–500 second variable Standard 2%–8% restart delay variable voltage unbalance Standard 1–30 second trip delay LED display McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
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Page 115: Replacement Parts List
Replacement Parts List Replacement Parts List Component Description McQuay part number designation Main Control Board 060006101 112026101 (replaces 106102701) CCB1 Auxiliary Cooling Control Board (DX Circuit #1 or generic condenser) 112026101 (replaces 106102701) CCB2 Auxiliary Cooling Control Board (DX Circuit #2) -
Page 116: Service And Warranty Procedure
Service and Warranty Procedure Service and Warranty Procedure Replacement Parts When writing to McQuay for service or replacement parts, provide the model number, serial number, and unit part number of the unit as stamped on the serial plate attached to the unit. -
Page 117: Limited Product Warranty (North America)
Company, including products sold under the brand names McQuay Air Conditioning, AAF Air Conditioning, AAF Sole Remedy HermanNelson and McQuay Service, and used in the United States or Canada, proves defective in material or workmanship THIS WARRANTY CONSTITUTES THE OWNER’S SOLE within twelve (12) months from initial startup or eighteen (18) REMEDY. - Page 118 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 119 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 120 McQuay IM 487-4 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com...
- Page 121 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.
- Page 122 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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