Vision CAC 003G - 090G Installation And Maintenance Manual Download

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Installation and Maintenance Manual

IM 672-7

Vision™ Air Handler

Group:

Applied Air Systems

Part Number:

IM 672

Date:

October 2011

Models CAC/CAH 003G – 090G

Summary of Contents for CAC 003G - 090G

Page 1: ...Installation and Maintenance Manual IM 672 7 Vision Air Handler Group Applied Air Systems Part Number IM 672 Date October 2011 2011 McQuay International Models CAC CAH 003G 090G...

Page 2: ...Actuators 17 Face Bypass Damper Torque Requirements 17 Piping and Coils 17 Water Cooling Coils 17 Direct Expansion Coils 17 Steam Coils 18 Water Heating Coils 20 Drain Pan Traps 20 Internal Isolation...

Page 3: ...g can cause misalignment or a damaged bearings or shaft Carefully inspect fans and shaft before unit installation to verify this has not happened 4 Handle the zone damper of the multi zone units with...

Page 4: ...rfaces Belt driven fans Reduce belt tension by at least 50 or remove the belts Remove belts if they will be subjected to temperatures exceeding 85 F to avoid deterioration Remove belt guard when adjus...

Page 5: ...also can be removed If necessary the unit can be disassembled Maintain at least 54 of clearance in front of electrical power devices starters VFDs disconnect switches and combination devices Electric...

Page 6: ...mbled or as separate shipping sections Rig units that require field assembly of shipping sections into position first Shipping sections are provided with a connection splice joint attached on the leav...

Page 7: ...mponents and fasten using the following procedure Note See Face and Bypass Section Mounting page 12 for the exception to this procedure 1 The vertical inverted section has a splice joint extending out...

Page 8: ...individual sections parallel in the direction of airflow to be attached to either side Each section will attach to the heatwheel section and then to the other parallel section 1 Rig the unit into posi...

Page 9: ...l screws or drill screws 4 long maximum through the interior frame channel of one unit into the splice joint of the neighboring section The section to section splice joint is always provided on the le...

Page 10: ...angle iron or channels per SMACNA guidelines When a unit is unitized ships in one piece channel support each component under the unit width Figure 18 When a unit is sectionalized ships in multiple sec...

Page 11: ...ection doors requires using a 1 2 socket wrench Figure 21 which satisfies ANSI standards and other codes that require the use of tools to access compartments containing moving parts or electrical wiri...

Page 12: ...mpound The unit frame channel is another excellent location for securing heavier components self tapping screws are not acceptable Ensure that the location permits the full operation of all access doo...

Page 13: ...f the bypass duct to the unit must be done after the unit is assembled Also if the bypass duct is over 90 long the duct does not ship in one piece and must be field assembled The field assembly of the...

Page 14: ...lso has a joining collar in the discharge opening This collar fits in the bottom of the vertical bypass section 3 After the components in the multizone are fitted together fasten the joining plates to...

Page 15: ...t i o n p a n e l c o v e r f r o m d a m p e r t o a l l o w c a u l k i n g D r i l l s c r e w i n t o c a b i n e t f r a m e w i t h 1 0 A B x 5 0 d r i l l s c r e w 1 4 A B x 5 0 O p e n d a m...

Page 16: ...e bell arms are 45 clockwise from the vertical center The hot deck closes when the bell arms are 45 counterclockwise from the vertical center 4 Tighten set screws on bell arms while holding the damper...

Page 17: ...a Piping and Coils When designing and installing piping Follow applicable piping design sizing and installation information in ASHRAE handbooks Observe all local codes and industry standards Do not ap...

Page 18: ...s only for air venting Use bucket traps for on off control only Locate traps at least 12 inches below the coil return connection Multiple coil installation Individually trap each coil or group of coil...

Page 19: ...si 5GA or 8GA coils Note that the addition of a vacuum breaker to permit the coil to drain during shutdown 5TA 8TA or 5HA coils Conden sate is lifted to overhead return main 5JA or 8JA coil Installed...

Page 20: ...access from the drive side of the unit Either remove them before the unit is assembled or remove the panel on the opposite drive side to gain access The spring isolators under the four corners of the...

Page 21: ...aise the fan motor and frame assembly Retighten the bolt on top of the isolator assembly Figure 31 Adjusting Large Spring Mount Assembly Figure 32 Removing Motor Behind Shipping Brackets Figure 33 Rem...

Page 22: ...ants Control Wiring Access to the VFD is through the fan cabinet access door Provide shielded cable only as described in the provided VFD manual Route wire through the panel so that it does not interf...

Page 23: ...frame in accordance with local electric codes AVERTISSEMENT Risques d incendie et d lectrocution pouvant causer des dommages mat riels des blessures et m me la mort L alimentation lectrique du moteur...

Page 24: ...d 2 Adjust dimension C by loosening wheel hub setscrews shifting wheel s axial as needed and retightening setscrews Figure 36 Wheel to Inlet Funnel Relationship 13 to 36 Plenum Fans WARNING ROTATING F...

Page 25: ...25 0 91 3 50 16 0 25 0 91 3 50 18 0 38 0 86 3 88 20 0 42 1 11 3 88 22 0 45 1 11 3 88 24 0 51 1 11 3 88 27 0 55 1 36 4 50 30 0 62 1 36 4 50 33 0 55 1 50 5 00 36 0 63 1 50 5 00 Wheel Funnel Parameters S...

Page 26: ...21 56 24 00 Max rpm Class I 3000 3000 2300 2000 1700 1500 Max rpm Class Il 4335 3918 3457 2858 2427 2255 300 250 200 150 100 90 80 Torque in lb 350 400 450 500 600 650 700 750 800 850 1000 1500 Fan sp...

Page 27: ...fans Diameter 13 5 15 16 5 18 25 20 22 25 24 5 27 30 33 36 5 40 25 44 50 49 54 25 60 Max rpm Class I 2895 2589 2376 2256 2077 1875 1691 1479 1328 1209 1073 972 882 799 725 651 Max rpm Class II 3786 33...

Page 28: ...rease in levels is an indication of potential trouble Vibration Causes 1 Wheel imbalance a Dirt or debris on wheel blades b Loose set screws in wheel hub or bearing to shaft c Wheel distorted from ove...

Page 29: ...e operating temperature See below for specific recommended lubricants Table 15 Recommended Lubricants and Amounts for Fan Motor Bearings Mfr Grease NEMA Size Amount to Add oz Texaco Polystar or Polyre...

Page 30: ...g the belt tension and increasing or decreasing the pitch diameter of the sheave by half or full turns as required Readjust belt tension before starting drive 6 To provide the same pitch diameter adju...

Page 31: ...Fan Drive Belt page 33 10 Before starting the drive ensure that all keys are in place and all setscrews and all capscrews are tight Check and retighten all screws and retension belts after approximat...

Page 32: ...Do not open 8V sheaves more than 8 turns 6 Tighten BOTH locking screws A in the outer locking ring before operating the drive Use a torque wrench and tighten to the value shown in Table 19 7 Replace b...

Page 33: ...r compartment until the fan is completely stopped Use approved equipment for reaching filters located above normal reach Do not step on filter frames or unit components Floor surfaces must be dry and...

Page 34: ...onditioning unit may have some moisture Algae etc can grow due to airborne spores and bacteria Periodic cleaning is necessary to prevent this buildup from plugging the drain and causing the drain pan...

Page 35: ...e supports are removed disconnect the neoprene bulk head seal that is attached to the fan discharge 3 Remove the four discharge angles that hold the neoprene canvas in place around the discharge openi...

Page 36: ...bolts on both ends of the bottom coil holding it in place and then lift and slide the coil out Installing Stacked Coils 1 Slide the bottom coil through the opening in the coil section onto the bottom...

Page 37: ...s 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 fa...

Page 38: ...eturned material Enter the required information to expedite handling and prompt issuance of credits All parts must be returned to the appropriate McQuay facility designated on the Return Goods tag Tra...

Page 39: ...do fans turn freely by hand Yes No N A F Electrical service corresponds to unit nameplate Yes No N A Volts __________ Hertz __________ Phase __________ G Is the main disconnect adequately fused and ar...

Page 40: ..._______________ N A D Check for air bypass around heat wheel Yes No N A Yes No N A Yes No N A Signature ______________________________________________________ Startup date ____________________________...

Page 41: ...inet have any air leakage Yes No N A Location on unit ___________________________________________________________________________ 5 Were there any refrigerant leaks Yes No N A Shipping Workmanship Des...

Page 42: ...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 Con...

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