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Sophomore Series 4000 & 5000 Cabinet - Classroom Air Handler - Owner's Manual - Installation, Operation, and Service Instructions

Cleaning Supply

(Fig. 5)

and, Condensing Fan (Fig. 6)

1.

Remove fan(s) from unit. (Refer to Pg 12,13)

2.

Take a brush or similar cleaning tool and clean blades of fan to remove built up

attached dirt.

3.

Use a vacuum or compressed air and clean entire fan including the blades.

4.

Replace fan in unit.

(Refer to Pg 12, 13)

4.11 Figure 5 |

Supply Fan Assembly

Fig. 5

Supply Fan Assembly - Electrically Commutated Motor (ECM)

(Requires no oil)

Fig. 6

Condenser Fan Assembly - AC Centrifugal Fan Assembly

(Requires no oil)

4.10 Cleaning Supply and Condensing Fans

4.12 Figure 6 |

Condenser Fan Assembly

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12
13
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16
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Summary of Contents for changeair CAH4036HPVPDD

Page 1: ...dy for future reference Should you require further information contact the factory or your regional Changeair representative Improper installation adjustment alteration service or maintenance can cause property damage personal injury or loss of life and could cause exposure to substances which have been determined by various state agencies to cause cancer birth defects or other reproductive harm R...

Page 2: ...www changeair com 2 Sophomore Series 4000 5000 Cabinet Classroom Air Handler Owner s Manual Installation Operation and Service Instructions ...

Page 3: ...1 Washable Filters s 11 4 5 Figure 2 Disposable Filter s 11 4 6 Removing Supply Fan s 12 4 7 Figure 3 Removing Supply Fan s 12 4 8 Removing Condensing Fan 13 4 9 Figure 4 Removing Condensing Fan 13 4 10 Cleaning Supply and Condensing Fans 14 4 11 Figure 5 Supply Fan Assembly 14 4 12 Figure 6 Condenser Fan Assembly 14 4 13 Cleaning Energy Recovery Wheels ERW 15 4 14 Figure 7 Cleaning Energy Recover...

Page 4: ...the packaged product with normal handling will withstand the load conditions encountered in normal transit and in handling Your air handling unit should be inspected at the time of delivery to determine if any damage is present due to shipping or handling If any damage is discovered do not install the unit Notify the freight company immediately and file a damage claim The receiver is responsible f...

Page 5: ...r attention to words DANGER WARNING or CAUTION DANGER indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It is also used t...

Page 6: ... provided under the same conditions as stated above in the limited standard parts only warranty section EXTENDED OPTIONAL WARRANTIES Changeair offers extended warranties on the compressor the gas heat exchanger or the complete Changeair unit at an extra cost to the customer Extended warranty packages may be purchased through an authorized Changeair supplier and are available in either a prorated p...

Page 7: ...TUTE PRODUCTS FACILITIES OR SERVICES LOSS OF PRODUCTION OR COST OF CAPITAL WHETHER OR NOT CHANGEAIR HAS BEEN ADVISED OF THE POSSIBILITY OF ANY SUCH DAMAGES WHETHER OR NOT FORESEEABLE AND WHETHER OR NOT BASED ON A BREACH OF CONTRACT NEGLIGENCE OR GROSS NEGLIGENCE WARRANTY CLAIM PROCEDURE If customer believes one or more components of the Changeair product is defective or working improperly customer...

Page 8: ...900 1200 1400 1500 1700 Total Cooling Capacity 18 5 24 5 27 33 37 41 5 Sensible Cooling Capacity 14 2 19 6 21 6 26 4 29 6 33 2 IPLV 12 9 12 9 13 5 13 4 12 6 12 2 Heating Capacity 20 25 5 29 5 35 5 39 5 46 COP 4 1 4 4 2 3 9 4 1 3 8 Rated in accordance with AHRI Standard 390 Cooling capacity rated at standard conditions 80 67F indoor air 95F outside air Heating capacity rated at standard conditions ...

Page 9: ... Cabinet 40 4000 Series Cabinet 50 5000 Series Cabinet 4 Cooling Capacity Nominal 24 24 000 Btu Hr 28 28 000 Btu Hr 36 36 000 Btu Hr 42 42 000 Btu Hr 48 48 000 Btu Hr 60 60 000 Btu Hr 7 DD Ducted Discharge Draw Through 6 Ventilation Options VP Standard Ventilation VPS Standard Ventilation with Powered Relief Fan ERW Energy Recovery Wheel ERW E Energy Recovery Wheel with 100 Economizer 5 Cooling Op...

Page 10: ...ing Your Classroom Air Handler Exterior Annually or as needed thoroughly clean cabinet exterior using a soft absorbent cloth mild soap and water and or non abrasive non acidic cleaner Interior 1 Clean the interior annually or as needed 2 Check and clean or replace air filter s monthly or as required Refer to Pg 11 3 Thoroughly vacuum entire unit 4 Wipe down metal parts as needed 5 Clean fan assemb...

Page 11: ...or Changing Filters Recommended once a month or as required 1 Turn OFF electrical supply to unit 2 Open both front service panels with the key provided Keys may vary 3 Slide out dirty filters and replace with new ones Fig 2 or wash filters if permanent with water flushing in opposite direction of air flow let dry and replace Fig 1 4 Units that are equipped with DX Cooling only will have a washable...

Page 12: ...the wire harness from the fan motor Fig 3 4 Carefully pull the assembly straight out of the unit 5 Clean dirt from fan blades and around the motor housing 6 Replace fan assembly in track and push in fully 7 Reconnect wire harness to fan motor 8 Close service panels and lock with key turn electrical power ON and test operation of the unit 4 7 Figure 3 Removing Supply Fan s 4 6 Removing Supply Fan s...

Page 13: ...move the fasteners from condenser fan access cover and pull the access cover out of the unit Fig 4 4 Disconnect the wire harness from the condenser fan Fig 4 5 Carefully remove the condenser fan housing Fig 4 6 Place the condenser fan assembly down in away that the top cover can be removed Fig 4 7 Remove the bolts holding the condenser fan Fig 4 8 To reassemble reverse the order 4 9 Figure 4 Remov...

Page 14: ...milar cleaning tool and clean blades of fan to remove built up attached dirt 3 Use a vacuum or compressed air and clean entire fan including the blades 4 Replace fan in unit Refer to Pg 12 13 4 11 Figure 5 Supply Fan Assembly Fig 5 Supply Fan Assembly Electrically Commutated Motor ECM Requires no oil Fig 6 Condenser Fan Assembly AC Centrifugal Fan Assembly Requires no oil 4 10 Cleaning Supply and ...

Page 15: ... panels with the key provided 3 Open ERW damper 4 Carefully reach in with vacuum end and vacuum the core making sure to rotate the wheel 5 Using low psi compressed air blow dirt out of the core on exhaust side making sure to rotate the wheel 6 Once clean close the doors and turn electrical power back on 4 14 Figure 7 Cleaning Energy Recovery Wheels ERW Fig 7 Cleaning Energy Recovery Wheels ERW 4 1...

Page 16: ...Energy Recovery Wheel ERW 1 Turn OFF electrical power to the unit 2 Open front service panels with the key provided 3 Remove the 7 screws holding the ERW damper assembly and disconnect Belimo wire harness Remove damper assembly 4 Pull out ERW and disconnect wire harness 5 Reverse order to reassemble 4 16 Figure 8 Removing Energy Recovery Wheels ERW Fig 8 Removing Energy Recovery Wheels ERW ...

Page 17: ...sed air clean coil in reverse direction of air flow both coils if applicable and or using an environmentally safe cleaner spray top side of coil and allow to soak for several minutes 4 If required wipe up drips and excess spray allow to dry if required 5 Re assemble unit and test Outdoor Coil Gain access to inside portion of condenser coil Remove the compressor door 1 Using a coil brush remove dis...

Page 18: ...www changeair com 18 Sophomore Series 4000 5000 Cabinet Classroom Air Handler Owner s Manual Installation Operation and Service Instructions 4 19 Figure 10 Component Drawing Fig 10 Component Drawing ...

Page 19: ...triction and without inhibiting the operation of the dampers It will be necessary to cut away enough of the bird screen in the back of the exterior louver to allow the condensate hoses to pass between the blades of the louver to the exterior 4 Check to be sure that the back of the Classroom Air Handler is centered directly in front of the wall sleeve opening and then carefully slide the air handle...

Page 20: ...tandard weather proofing procedures when installing and caulking the exterior louver and wall sleeve to prevent the infiltration of water into the wall cavity 12 Install the kick plate cover along the front at the base of the unit ventilator and fasten into place along the sides with a couple of screws 13 Apply a small bead of silicone around the outside of the air handler where the unit meets the...

Page 21: ... standoff it may be necessary to add extensions to the sleeve and dividers which must be fabricated in the field 2 Assembly of the wall sleeve is detailed in the assembly drawings enclosed in the information package provided with the unit We recommend the use of x 10 round head self tapping sheet metal screws to fasten each component together Screws must be installed with heads out to prevent them...

Page 22: ... and accessories 1 On a clean flat unobstructed floor surface lay out the pieces of the standoff relative to the positions they are to be installed shown in the Installation Assembly Drawings sent with the unit 2 Clamp the angle brace so it is flush to the top back edge of top cover Fasten the angle brace with four evenly spaced screws This will be used at a later step to fasten the air handler to...

Page 23: ...lenum assembly Tip At this time it may be easiest to cut any necessary holes or service knockouts that may be required in the plenum and install any plenum takeoffs or supply grilles before proceeding 3 Apply 3 8 foam tape to the bottom edges of the top plenum and front access cover to create a positive air seal between the plenum and the unit If your unit does not have a rear plenum extension app...

Page 24: ...ape back from the outside edges by at least so the tape does not become unsightly when compressed 4 Position the Classroom Air Handler directly in front of its final installation position Allow enough room behind the unit for the RPA and some room to work Once the RPA is mounted it may become more difficult to relocate the ventilator 5 Place the RPA tight against the back of the unit so that it is...

Page 25: ...n Operation and Service Instructions www changeair com 25 6 0 Installation Drawings 6 1 Figure 12 Sophomore Series Installation Drawing Fig 12 Sophomore Series Installation Drawing NOTE All installation drawings provide information for installation of hot water and electric heat units ...

Page 26: ... Owner s Manual Installation Operation and Service Instructions 6 2 Figure 13 Sophomore Series Installation Drawing NOTE All installation drawings provide information for installation of hot water and electric heat units Fig 13 Sophomore Series Installation Drawing No Drill Zone ...

Page 27: ... for programming or technical support lines available in your region Literature and technical support are available for LON or BACNET controllers supplied with the unit through your Changeair representative For all other controllers contact the controls contractor assigned with this product For Mechanical Related Problems Check the maintenance schedules to ensure that all cleaning schedules are up...

Page 28: ...ine if damper position is controlled from an Air Quality device If an Air Quality device is present test device output for DC voltage and actuator for corresponding DC voltage during occupied state d Check for mechanical obstruction 7 3 Cooling Troubleshooting 1 Problem Temperature drop between mixed air and supply is less than 18 F If it is more than this the unit is operating properly a Confirm ...

Page 29: ... 676 0700 or visit www changeair com 3 Problem Compressor Cycles Off and On a Low voltage check for proper supply voltage at unit b Restriction in the air across the condenser check and clean as required c Check for proper installation of the wall sleeve and louver d Check high pressure switch and or low pressure switch if equipped e Confirm the condenser fan and supply fan speed and operation Pos...

Page 30: ...www changeair com 30 Sophomore Series 4000 5000 Cabinet Classroom Air Handler Owner s Manual Installation Operation and Service Instructions ...

Page 31: ...Sophomore Series 4000 5000 Cabinet Classroom Air Handler Owner s Manual Installation Operation and Service Instructions www changeair com 31 ...

Page 32: ...19 688 6363 Changeair To find your local representative contact www changeair com Changeair VDDOC23 20150515 SOPHOMORE Changeair reserves the right to update or continually improve their products specifications or information without notice ...

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