Home

Trane CAH-SVX01A-EN User's Manual

1. For the units furnished with gas furnaces the heating demands require a special motor to withstand the higher temperatures These motors are furnished with Class H insulation to withstand this rigorous duty Note The customer should provide adequate freeze protection for the coils CAH SVX01A EN General Information Controls Wiring Sizes and Connections As a standard there are no penetrations into the Custom air handler for any field provided wiring or device Before installation consider overall unit serviceability and accessibility before mounting running wires power making cabinet penetrations or mounting any components to the module cabinet Wiring to the unit must be provided by the installer and must comply with all national and local electrical codes The fan motor nameplate includes a wiring diagram If there are any questions concerning the wiring of the motor be sure to write down the information from the motor nameplate and contact your local fan motor manufacturer representative for assistance Factory Mounted Controls Small items that cannot be factory mounted will ship inside the control enclosures Larger items may ship inside the fan module Note All control valves ship directly to the ship to address from the vendor unless another address is given on the Trane sales order Depending on job requirements the customer may need to provide 120 Vac control power A dedic
2. 1 Remove the headers 2 Usea small nylon or fiber brush to clean the tubes 3 Flush the tubes with water 4 Install a new rubber sealing gasket and be sure it seats properly when the header is replaced Note Apply washers under the bolt heads Bolts should be evenly tightened to 50 foot pounds of torque beginning in the center and working toward the outside Refrigerant Coils ZA WARNING Hazardous Chemicals Coil cleaning agents can be either acidic or highly alkaline Handle chemical carefully Proper handling should include goggles or face shield chemical resistant gloves boots apron or suit as required For personal safety refer to the cleaning agent manufacturer s Materials Safety Data Sheet and follow all recommended safe handling practices Failure to follow all safety instructions could result in death or serious injury ZA WARNING Hazardous Pressures Coils contain refrigerant under pressure When cleaning coils maintain coil cleaning solution temperature under 150 F to avoid excessive pressure in the coil Failure to follow these safety precautions could result in coil bursting which could result in death or serious injury To clean refrigerant coils 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment use a soft brush to remove loose debris from both sides of the coil 3 Install a block off to prevent spray from going through the
3. 5 Use a modulating valve that has linear flow characteristics to obtain gradual modulation of the coil steam supply den Note Do not modulate systems with overhead or pressurized returns CAH SVX01A EN 31 e TRANE unless the condensate is drained by gravity into a receiver vented to atmosphere and returned to the condensate pump 6 Pitch all supply and return steam piping down 1 inch for every 10 feet in the direction of the steam or condensate flow Note Do not drain the steam mains or take offs through the coils Drain the mains ahead of the coils through a steam trap to the return line 7 Ensure overhead returns have 1 psig of pressure at the steam trap discharge for every 2 feet of elevation for continuous condensate removal Water Coil Piping Figure 30 through Figure 32 illustrate typical water coil piping configurations Type WA 5A 5W D K W UW TT P2 P4 and P8 water coils are self venting only if the water velocity exceeds 1 5 feet per second fps in the coil tubes Type UU WD and 5D water coils are self venting only if the water velocity exceeds 2 5 fps in the coil tubes See the unit submittals for coil water velocity If the water velocity is below these minimums vent the coil by one of the following methods e Install an air vent in the top pipe plug tapping of the return header e When the return line rises above the top of the coil vent from the top of the return heade
4. Check for moisture in the grease If moisture is present remove the motor and send it to an authorized repair shop for bearing inspection replacement If no moisture is present refer to the motor manufacturer s lubrication recommendations for proper lubrication Coil Related Checks CAUTION Proper Water Treatment The use of untreated or improperly treated water in coils may result in scaling erosion corrosion algae or slime Engage the services of a qualified water treatment specialist to determine what water treatment if any is required Trane assumes no responsibility for equipment failures that result from untreated or improperly treated water e Ensure coil and condensate drain piping connections are complete e Check the piping and valves for leaks Open or close the valves to check operation The drain lines should be open e If unit has a refrigerant coil ensure that it has been charged and leak tested according to the instructions provided with the condenser equipment Adjust the superheat setting e Remove all foreign material from the drain pan and check the pan opening and condensate line for obstructions e For steam coils slowly turn the steam on full for at least 10 minutes before opening the fresh air intake on units with fresh air dampers Motor Related Checks e Check motor winding An acceptable winding resistance reading is from 6 meg ohms to infinity If reading
5. If the unit is shipped as a complete assembly go to Coil Piping and Connections on page 28 Prior to unit assembly refer to the unit submittal drawings and unit tagging for correct placement of sections Failure to review the submittal drawings could result in performance or assembly problems If there are any discrepancies contact your local Trane sales representative before proceeding All shipping supports and crating on the face of the sections must be removed and discarded to permit proper fit up and sealing of the surfaces Units may be mounted on the roof with a roof curb or pier mount Units may be mounted indoors on housekeeping pads Refer to submittals for unit dimensions and openings Note For proper operation the unit must be supported around the entire unit base perimeter If the unit is shipped in sections the entire section perimeter must be supported as well as at the base channels of the unit splits Provide clearance around the unit to allow adequate free air and necessary service access Also allow room for supply and return piping ductwork electrical connections and coil removal The building roof must be able to support the entire weight of the unit roof curb and accessories See submittals for approximate unit weights e Preparation of the roof curb or pier mount and roof openings should be completed prior to lifting the unit to the roof e Check that the gasketing or sea
6. that contains only fluorine carbon and hydrogen refrigerants to the atmosphere resulting from installation operation routine maintenance or major service on this equipment Always act in a responsible manner to conserve refrigerants for continued use even when acceptable alternatives are available e TRANE Contents r h E Introduction ee c 3 UnitiDescrlptlOF Lie eb Een obse een 3 Protectirig thie Envirorimmerit oon oet etd eee e reel uns 3 CONTENTS Grissini neueste tuns t cH ena Po dus ue tapia 4 General Information er eis 5 Operating EnvIFOFRITIent eec te tin et teme lo nate beet Lebe Med 5 einige C C AER 5 Ultraviolet UV Germicidal Irradiation Lights optional 6 Pre Installation Requirements esssese 7 Receiving Checklists lemine ore Io eame rt pete e atre tee ee te reet 7 Resolving Shipping Damage saspi ia ai a a annat 7 Job Site Storage Recommendations ccccccnnnoncooonnccnncnnncnnnonoconennnononoss 7 Preparing the Unit SiE eo tette der eet A tret deles 8 Roof Gurb Installatiori tt ttt os t treo d 9 Installation iiie sain anen ses dee aea cce acia ps eei ne near acun 10 la A der Rr ER tap ere EE 10 Unit Assembly tit d e t dise cond reddi 11 TCP Model Assembly Instructions sss 12 TCC Model Assembly Instructions sssssse 17 Duct ConnecHlons Lai eda e deinde
7. vibration noise or overheating of the motor and fan bearings however note that bearings may run warm during break in Sheave Alignment Align the fan and motor sheaves using a straightedge The straightedge must be long enough to span the distance between the outside edges of the sheaves When the sheaves are aligned the straightedge will touch both sheaves at points A through D see Figure 48 to confirm the shaft is parallel For uneven width sheaves place a string in the center groove of both sheaves and pull tight Adjust the sheaves and tighten the sheave set screws to the proper torque given in Table 4 CAH SVX01A EN Startup Figure 48 Proper drive alignment Center lines Lines must must coincide be parallel gt D Fixed Sheave oe S Straight edge B A 2 Sheave Table 4 Fan and drive compound torque settings inches Screw Size Hex Key Square Head Hex Head Torque in Ib Torque ft Ib 1 4 1 8 3 8 7 16 66 90 5 5 7 5 5 16 5 32 1 2 1 2 126 164 10 5 13 7 3 8 3 16 9 16 9 16 228 300 19 0 25 0 7 15 7 32 5 8 5 8 348 450 29 0 37 5 1 2 1 4 3 4 3 4 504 650 42 0 54 2 5 8 5 16 15 16 15 16 1290 1390 107 0 116 0 same for each belt the motor and fan shaft are not parallel Realign as required After realignment tighten the belts again to the standard belt tensioning specifications If the force is still not the same for all belts the belts or sheaves are worn and must be replaced
8. 24 Component Installation Requirements sse 24 Coil Piping and Connections seee eea re i E ae T VE ATER AA INE RAREST 28 WIEIDIQ 52e AE e tH ec SE TU vu dois 41 External Insulating Requirements ooooocococononononononccononononononononnnnocnnos 42 StaFf p adn 43 PresStartup CheckllStu ueteres ee ete Herbs dria 43 Unit Operation cc sitet ok ce ea tt e rd eb e ds 44 Determine Fan Speed ssssssssssssssseeeemenenn 47 Sheave Aligritmerit 2 eot ia 47 Multibelt Chiesa ca o 47 Routine Maintenance occcooncccccccconoccononononananannnnnnnnannnnnnnos 48 AMEN SS aed dete t e Ten ede et eer ets 49 Dirai Pans deterret een pe tee nete eee ebat Posen eve EN 50 O 50 NO 52 Moisture Purge Cycle Aa 53 InterrialiInsulatlOb cct tt ete ee et ette e gn 54 Ultraviolet UV Germicidal Irradiation Lights sssesssssss 55 Troubleshooting 5 iore olm acia 56 CAH SVX01A EN e TRANE Operating Environment When considering the placement of the Custom Climate Changer air handler it is important to consider the operating environment The acceptable ambient temperature range for unit operation is 40 F to 140 F 40 C to 60 C For heating applications a special motor may be required to withstand the higher temperatures Motors with Class B insulation are acceptable for ambient temperatures up to 104 F while motors with Class F insulation can withstand ambient temperatures to 4140 F 60 C
9. Disconnect power to the unit 2 Keeping the bag filters folded slide each filter into the filter rack pushing them tightly against the unit Pleats should be in the vertical position 3 If using optional pre filters slide them into the appropriate filter rack 4 If block offs are provided with the unit slide the block offs into the filter track 5 Close and secure the access door making certain the door closes snug against the rack Note The block off is intended to make a seal when the access door is closed It may require a few adjustments to ensure a proper seal Figure 25 Filter block off placement CAH SVX01A EN Installation A I ee Outdoor Unit Weather Hood s 1 Per the unit drawing determine mounting location of the unit weather hoods All weather hoods have been pre fit on the unit and removed for separate shipping at the factory Remove any factory mounted screws located in the weather hood mounting location Using the factory provided screws mount the weather hoods to the unit Note Note it is required that the hoods be sealed to the unit using field provided caulk or gasket INN STI 27 e TRANE Coil Piping and Connections General Recommendations Proper installation piping and trapping is necessary to ensure satisfactory coil operation and to prevent operational damage Support all piping independently of the coils e Provide swing joints or
10. Multibelt Check Tighten the belts slightly and rotate the drive several times On multiple belt drives ensure the force of deflection is approximately the same on each belt by pushing each belt in an equal distance at a point halfway from each sheave see Figure 48 If this force is not the 47 e TRANE The following checklist is provided as an abbreviated guide to periodic maintenance Detailed procedural information is given after this checklist Routine Maintenance Z WARNING Hazardous Service Procedures The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical mechanical or other potential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures When possible disconnect all electrical power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged When servicing fans or ductwork secure the impeller to physically restrict rotational movement When necessary to work with live electrical components have a qualified l
11. W 14 S M SCREWS T x 3 ADD CAULKING BEFORE ADDING JOINING STRIPS Ex SPLIT SPLIT 4 X 1 4 GASKET 13 e TRANE TCP Wall Section Assembly Typical 1 Apply the walls and join at the inside angles with number 14 sheet metal screws on 12 inch centers along the length of the angles Apply the 1 8 inch gasket evenly to the exterior of the walls across Installation A ee Apply the joining strip over the gasket and uniformly straddling the splits Secure with number 10 sheet metal screws Fit the pre cut hub cap over the joining strip the vertical height of the wall flush with the roof and secure it to the wall with number 8 sheet metal screws Fill the top 2 Add a bead of caulk along the length of the roof seams Install the pre cut J cap over the seam and secure with number 14 sheet metal screws on 12 inch centers Note Use a polyurethane or equivalent caulk It may be necessary to clamp the joint together or predrill to prevent the two joined edges of the Before installing the pre cut joining strip over the gasket pre TCP Outdoor Roof Section drill holes in the wall using the strip as a guide with a number 29 drill bit at 12 inch centers and bottom openings with caulk separation when drilling with as moisture seal Pre drill holes SCIEWS with a number 29 bit 3 Apply caulk to the end cap interior surface Secure the end cap
12. and must comply with all national and local electrical codes The installer must also furnish a fused disconnect switch in compliance with national and local electrical codes Fan motors also require motor overload protective devices that are rated or selected in compliance with the National Electric Code or Canadian Electric Code Specific unit and motor connection diagrams are provided on the starter VFD if Trane provided or refer to the motor nameplate CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Figure 41 Transformer plate 24 Vac to end devices and controllers Line supply to transformers CAH SVX01A EN Installation All direct digital controllers DDCs are provided with line voltage to 24 Vac control transformers mounted and wired in the starter or variable frequency drive VFD power box transformer plate see Figure 41 or 120 to 24 Vac control transformers mounted and wired in the auxiliary control panel see Figure 42 Figure 42 Controller with power box attached Line supply 120 Vac 24 Vac Figure 43 Variable frequency drive VFD Figure 43 shows a typical VFD power box Note The valve jack junction box is typically located at the air leaving side of the coil connection inside panel For coils with headers on both sides of the module the valve
13. coil and into a dry section of the unit and or system ductwork 4 Mixa high quality coil cleaning detergent with water according to the manufacturer s instructions Note If the detergent is strongly alkaline after mixing PH 8 5 or higher it must contain an inhibitor Follow the cleaning solution manufacturer s instructions regarding the use of the product 5 Place the mixed solution in a garden pump up sprayer or high pressure sprayer If a high pressure sprayer is to be used Maintain minimum nozzle spray angle of 15 degrees Spray perpendicular to the coil face Keep the nozzle at least 6 inches from the coil Do not exceed 600 psi 6 Spray the leaving air side of the coil first then the entering air side 7 Thoroughly rinse both sides of the coil and the drain pan with cool clean water 8 Repeat steps 6 and 7 as necessary 9 Straighten any coil fins damaged during the cleaning process 10 Confirm the drain line is open following the cleaning process CAH SVX01A EN e TRANE 11 Allow the unit to dry thoroughly before putting it back into service 12 Replace all panels and parts and restore electrical power to the unit 13 Be careful any contaminated material does not contact other areas of the unit or building Properly dispose of all contaminated materials and cleaning solution Coil Winterization Water coil winterization procedures consist primarily of draining wa
14. expansion valve bulb from other suction headers For horizontal tubing use the tube diameter recommended by the condensing unit manufacturer For the vertical riser use the tube diameter recommended by the condensing unit manufacturer Assure the top of the riser is higher than the evaporator coil Pitch the suction line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Insulate the suction line Only use a trim solenoid valve for constant volume humidity sensitive applications For all other applications install a single solenoid valve the pumpdown solenoid valve between the liquid line filter drier and the sight glass 37 e TRANE Dual Circuit Condensing Units Evaporator Coil with Two Distributors see Figure 38 1 Pitch the liquid lines slightly 1 inch 10 feet 1 cm 3 m so refrigerant drains toward th evaporator 2 Provide one expansion valve per distributor 3 Slightly pitch the outlet line Installation 4 The top of the Circuit 1 suction riser must be higher than the bottom evaporator coil Use the tube diameter recommended by the the condensing unit e manufacturer for the riser 5 Arrange the suction line so the refrigerant gas leaving the coil flows downward past the lowest suction header outlet before from turning upward the suction header toward the suction riser that is 1 inch 10 feet 1 cm 3 m in the dire
15. flexible fittings on all connections that are adjacent to heating coils to absorb thermal expansion and contraction strains e If the coil was ordered with factory mounted controls install the control valves The valves ship separately 28 Installation Note The contractor is responsible for supplying the installation hardware e For best results use a short pipe nipple on the coil headers prior to making any welded flange or welded elbow type connections e Extended drain and vent connections are provided as standard on DD and D coils only If extended drains and vents are required on other water coils they must be field installed or ordered as specials from the factory e Pipe coils counterflow to airflow e When attaching the piping to the coil header make the connection only tight enough to prevent leaks Maximum recommended torque is 200 foot pounds e Use pipe sealer on all thread connections e After completing the piping connections seal around pipe from inner panel to outer panel CAUTION Prevent Coil Damage To prevent coil damage do not use teflon based products for any field connections because their high lubricity may allow connections to be over tightened Failure to use proper materials may cause coil header damage Seal the piping penetration into the unit casing before insulating Seal from inner panel to outer panel to prevent unconditioned air from entering the module Failure t
16. jack is located at the return connection for water coils and the supply connection for steam coils ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury To provide field wiring to units with DDC controls e Provide 120 Vac power to a transformer in the junction box provided when a separate circuit is recommended see Figure 42 e Install outside air sensor and space sensor if ordered e For valve jack junction box mounting and wiring detail see Figure 43 CAUTION Seal the Penetrations Seal all penetrations into the unit to prevent air infiltration during operation Failure to do so may result in equipment damage 41 e TRANE Figure 44 Junction box mounting and wiring details 2 x 4 junction box 10 self drilling screws 2 Bushing 2 required N dha Cover for units with N NIP double wall Co
17. on the J cap with one Assembly Typical number 10 screw 1 Align the roof splits and join the interior section trim with number 14 sheet metal screws on 12 inch centers Figure 6 TCP outdoor roof assembly 14 ADD CAULKING BEFORE INSTALLING J CAP SPLIT SECTION TRIM ACTS AS AS JOINING ANGLE SECURE w 14 S M 12 CENTERS 4 X 1 4 GASKET APPLY CAULKING TO END CAPS THEN SECURE END CAPS TO THE ENDS OF J CAP J CAP SECURE J CAP Wi 14 S M ome S END CAP ESSERE Per OUTDOOR ROOF ASSEMBLY COMPLETE CAH SVX01A EN e TRANE TCP Indoor Roof Section Assembly Typical 1 Align the walls and join the inside angles with number 14 sheet metal screws on 12 inch centers along the length of the angles 2 Apply a bead of caulk along the length of the roof seam joint 3 Apply the 1 8 inch gasket on the exterior of the roof evenly across the roof split Figure 7 TCP indoor roof assembly PREDRILL HOLES WITH 29 SECURE HUB CAP W 8 S M SCREWS 1 4 GASKET DRILL BIT ____ __ Installation A I ee 4 Before installing the pre cut joining strip over the gasket pre drill holes in the roof using the strip as a guide with a number 29 drill bit at 12 inch centers 5 Apply the joining strip over the gasket and uniformly straddling
18. result in air leakage 8 Secure the unit sections at the base using the field provided bolts nuts and washers at the connecting plates 9 Once the sections are pulled together install the assembly hardware as applicable for the walls roof and the base as demonstrated in the following assembly sections CAH SVX01A EN e TRANE TCP Base Section Assembly Typical Note Failure to completely compress the gasketing may result in air leakage 1 Join the two units and secure with field provided 5 8 inch flat washers and 5 8 inch X 2 1 2 inch grade 9 bolts though each of the six holes 2 Caulkthe overlapping flange along the length of each split to maintain a seal Note Use a polyurethane or equivalent caulk Figure 5 TCP base assembly PREDRILL HOLES DRILL BIT WITH 7 32 3 X 1 8 GASKET JOIN WITH gt gt 5 8 FLAT WASHER 518 X 2 1 2 GRADE 9 BOLTS BASE ASSEMBLY CAH SVX01A EN Installation PILLE I ee 3 Apply the 3 inch X 1 8 inch gasket evenly across the two joined edges of the splits 4 Before installing the pre cut 4 inch 18 gauge joining strip over the gasket pre drill holes in the floor using the 4 inch strip as a guide with a 7 32 inch drill bit at 12 inch centers 5 Apply the 4 inch joining strip over the gasket and uniformly straddle the splits Secure with number 14 sheet metal screws at 12 inch centers T 12 CTR S 18 GAUGE JOINING STRIP x SECURE
19. them into the appropriate filter rack 4 If block offs are provided with the unit slide the block offs into the filter track 5 Close and secure the access door making certain the door closes snug against the rack Note The block off is intended to make a seal when the access door is closed It may require a few adjustments to ensure a proper seal 49 e TRANE See A WARNING Hazardous Voltage with Capacitors on page 49 regarding disconnection of power Drain Pans The condensate drain pan and drain line must be checked to assure the condensate drains as designed This inspection should occur a minimum of every six months or more often as dictated by operating experience If evidence of standing water or condensate overflow exists identify and remedy the cause immediately Refer to the Troubleshooting section on page 56 for possible causes and solutions To clean drain pans 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment remove any standing water 3 Scrape solid matter off of the drain pan 4 Vacuum the drain pan with a vacuum device that uses high efficiency particulate arrestance HEPA filters with a minimum efficiency of 99 97 percent at 0 3 micron particle size 5 Thoroughly clean all areas with a mild bleach and water solution or an EPA approved sanitizer specifically designed for HVAC use 6 Immediately rinse the aff
20. was received Note It is the receiver s responsibility to provide reasonable evidence that concealed damage was not incurred after delivery Job Site Storage Recommendations Custom units and or field installed accessories that must be stored for a period of time before installation must be protected from the elements A controlled indoor environment is recommended for proper storage Note The warranty does not cover damage to the unit or controls due to negligence during storage CAUTION Use Canvas Only Use only canvas tarps to cover air handlers Plastic tarps cause condensation to form in and on the equipment which can result in corrosion damage or wet storage stains e TRANE General Storage The unit controller and all other electrical electronic components should be stored in conditions of 20 F to 120 F and 5 to 95 percent relative humidity non condensing Electrical components are not moisture tolerant Factory protective coverings should be removed prior to storage Long Term Storage For longer periods of storage allow proper clearance around the unit to perform periodic inspection and maintenance of the equipment While the unit is in storage e Every two weeks rotate the fan and motor shaft 30 revolutions by hand e Every six months check fan shaft bearings and grease lines Add grease using a manual grease gun following the lubrications recommendations in Fan Bearing Lubri
21. 25 inches HG 3 5 inches of water CAH SVX01A EN e TRANE A O Proper steam trap installation is Figure 28 Typical piping for Type N steam coils and horizontal tubes for horizontal necessary for satisfactory coil airflow performance and service life For steam trap installation 1 Install the steam trap discharge 12 inches below the condensate return connection Twelve inches provides sufficient hydrostatic head pressure to overcome trap losses and ensures complete condensate removal a Use float and thermostatic traps with atmospheric pressure gravity condensate return with automatic controls or where the possibility of low pressure supply steam exists Float and thermostatic traps are recommended because of gravity drain and continuous discharge operation b Use bucket traps only when the supply steam is not modulated and is 25 psig or Figure 29 Typical piping for Type NS steam coils and horizontal tubes for higher horizontal airflow Note Trane steam coils require a minimum of 2 psi of pressure to assure even heat distribution 2 Trap each coil separately to prevent holding up condensate in one or more of the coils 3 Install strainers as close as possible to the inlet side of the trap 4 Ifinstalling coils in series airflow control each coil bank independently with an automatic steam control valve Size the traps for each coil using the capacity of the first coil in direction of airflow
22. F 422 1 8 UNC 500 1 14 UNF 602 Soft metric conversions are not acceptable for screw and hex sizes e Fan bearings without lubrication lines are sealed bearings Re lubrication is not required e Fan bearings equipped with lubrication lines should be lubricated with a lithium based grease that conforms to NLGI No 2 for consistency Compatible greases include Texaco Multi Fak 2 Shell Alvania 2 Mobil 532 Chevron Dura Lith 2 Exxon Beacon Keystone 84H Motor bearings are factory lubricated for normal life In the case of a double shielded bearing the grease provided is that which is in the bearing To regrease motors without grease fittings 1 Remove the bearing brackets 2 If the original bearing is to be relubricated remove the shield opposite the rotor a Do not replace b Flush old grease from bearing with suitable solvent 3 Lubricate the bearing and add grease to the bearing chamber The chamber should be three quarters full of grease An alternate method is to replace the old bearing with a new double shield pre lubricated bearing See Table 7 for maximum grease capacity Note Lubricate the bearing according to the motor manufacturer s recommendations and use the manufacturer recommended grease 4 Reassemble the motor Fan Motor Inspection Inspect fan motors periodically for excessive vibration or temperature Table 7 Fan bearing maximum grease cap
23. For all other applications install a single solenoid valve the pumpdown solenoid valve between the liquid line filter drier and the sight glass CAH SVX01A EN e TRANE Installation A ee Figure 37 Single circuit evaporator coil with four distributors Evaporator Coil with Horizontal Split suction Nds oo Standard Circuiting 7 8 d x 3 EFA E trim solenoid valve 3 ped 5 6 c filter drier 3 pumpdown EEE P solenoid valve 3 4 distributor suction line Evaporator Coil with 70 thermal expansion Intertwined Circuiting r valves TXV a ER trim solenoid valve au filter drier 6 pumpdown solenoid valve 4 distributor Single Circuit Condensing Units 4 Evaporator Coil with Four Distributors see Figure 37 1 Pitch the liquid line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator 2 Provide one expansion valve per 5 distributor 3 Slightly pitch the outlet line from the suction header toward the suction riser that is 1 inch 6 10 feet 1 cm 3 m in the direction of flow Use the tube diameter that matches the suction header connection CAH SVX01A EN Arrange the suction line so the refrigerant gas leaving the coil flows downward past the lowest suction header outlet before turning upward Use a double elbow configuration to isolate the thermal
24. Installation Operation Maintenance Custom Climate Changer Air Handlers Part No X39640745010 July 2005 CAH SVX01A EN e TRANE NOTICE Warnings and Cautions appear at appropriate sections throughout this manual Read these carefully ZA WARNING indicates a potentially hazardous situation which if not avoided could result in death or serious injury ZA CAUTION indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury It may also be used to alert against unsafe practices CAUTION indicates a situation that may result in equipment or property damage only accidents 2005 American Standard All rights reserved CAH SVX01A EN e TRANE Use this manual to install startup operate and maintain the Custom Climate Changer air handler Carefully review the procedures discussed in this manual to minimize installation and startup difficulties Unit Description Custom Climate Changer air handlers are designed for a variety of controlled air applications The basic unit consists of a fan heating and or cooling coils filters and dampers See the unit submittal drawings for detailed descriptions Each unit is provided with a nameplate This nameplate includes unit model number serial number and electrical data The fans are internally isolated To insure fan stability the unit ships with a minimum of four lock down devices that pr
25. It is recommended that the curb be installed directly on the support members and fastened to the supports using tack welds or other equivalent methods Properly supported decking should be installed inside the air handler section of the curb when this method is used See Figure 1 Figure 1 Cross section of typical curb installation on new construction to Rigid Ky 1 CAH SVX01A EN Screw securing roof f nsulation o came Typical Curb Installation Checklist e Verify that the roof structure can adequately support the combined weight of the unit and curb assembly e Ensure that the selected installation location provides sufficient service and operational clearances e Remove any twist within the curb due to roof supports and square the curb e evel the curb e Secure the curb to the roof support members e Install 2 inch thick boards or rigid insulation around the curb e Install cant strips around the curb e Bring field supplied roofing felt up to the top of the curb nailing strips ail felt into place e Install field supplied flashing under the lip of the curb flanges and over the felt e Apply sealant to the four corners Caulk all joints between the curb and the roof Attach the gasket material to the curb s top flanges entire perimeter and to the supply and return air duct opening panel flanges e TRANE Lifting and Rigging ZA WARNING Lifting and Rigging Do not lift
26. PLIT BASE TO WALL ASSEMBLY COMPLETE CAH SVX01A EN e TRANE TCC Model Assembly Instructions If your nameplate model number begins with TCC use the assembly instructions below Joining sections Edge to Edge Units must be installed level for proper drainage of condensate from the drain pan and for squareness of the sections during installation In addition each section in a multi section unit must be properly supported Note Leveling each section beginning with the first section is critical Failure to level and align the sections immediately creates greater misalignment or even structural damage afterward e Remove all wooden blocks under the unit and shipping protection from adjoining surfaces see Figure 9 e Place the first section of the air handler on the end of the roof curb or the housekeeping pad The section must be level from side to side and front to back Section squareness should be within 1 8 inch Remove the bottom bolts from lifting lugs located at the shipping split see Figure 10 CAH SVX01A EN Installation o _ _ e H Sn Figure 9 Remove shipping blocks REMOVE SHIPPING BLOCKS Figure 10 Remove lifting lug bolts RECOMMENDED ATTACHMENT TO LIFTING LUGS DETAIL A 17 e TRANE Apply 1 25 inch x 0 33 inch ribbed butyl tape to the shipping split channel and shipping split plates see Figure 11 Verify the section is level prior to proceeding with
27. Ultraviolet UV Germicidal Irradiation Lights The intensity of the ultraviolet energy emitted from the ultraviolet bulbs provided in this unit is dependent on the cleanliness and age of the bulb The surface of the bulb should be kept as clean as possible for optimum intensity Depending on the filtration level of the HVAC system and the general hygiene of the building periodic cleaning may be necessary Before attempting any maintenance procedures always follow all warnings and cautions as detailed in this maintenance section ZA WARNING Hazardous Voltage and Exposure to Ultraviolet Radiation This product contains components that emit high intensity ultraviolet UV C radiation which can be harmful to unprotected eyes and skin Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury CAH SVX01A EN Routine Maintenance ZA WARNING Hazardous Vapors If large numbers o
28. Use 3 8 inch butyl tape to cover the seam between Figure 18 Trim roof joint strip NUT 313 18 BOLT 313 18 X 0 750 HEX DETAIL A CAH SVX01A EN 23 e TRANE Duct Connections All duct connections to the units should be installed in accordance with the standards of the National Fire Protection Association NFPA for selecting and installing of air conditioning and ventilating systems other than residence type NFPA 90A and residence type warm air heating and air conditioning systems NFPA 90B To ensure the highest fan efficiency duct turns and transitions must be made carefully minimizing air friction losses and turbulence Proper duct work installation by such organizations as SMACNA Sheet Metal and Air Conditioning Contractors National Association Inc should be adhered to Component Installation Requirements Each component in the Custom air handler may have installation requirements that could affect the unit s performance Note For components included in the unit but not included in this manual reference the component manufacturers specific Installation Maintenance and Operation manual Copies of these manuals are either included in the package with this unit IOM or are attached to the components mounted in the unit Fans The fan and motor assembly are internally isolated The fan and motor bases are bolted to a minimum of four spring isolators The isolators are secured to the f
29. ace Incorrect glycol mixture Check fan operating condition Inspect the water pumps and valves for proper operation and check the lines for obstructions Adjust the chiller or boiler to provide the proper water temperature Verify coil piping see the Coil Piping and Connections section on page 28 Clean the fin surface see the Coils section on page 52 Verify glycol mixture and adjust if necessary Low refrigerant coil capacity Incorrect airflow Expansion valve is not operating properly or is sized incorrectly Incorrect refrigerant charge Condensing unit failure Coil is piped incorrectly Clogged refrigerant line filter Failure of suction liquid line components Dirty fin surface Fin frosting Check fan operating condition Check sensing bulb temperature Verify valve operation Verify proper valve size Verify refrigerant charge and adjust if necessary Verify condensing unit operation Verify coil piping see the Coil Piping and Connections section on page 28 Change filter core Verify component operation Clean the fin surface see the Coils section on page 52 Note Do not use steam to clean refrigerant coils Verify defrost cycle operation Verify frostat operation Verify refrigerant charge Low steam coil capacity Incorrect airflow Coil is piped incorrectly Incorrect steam pressure Excessive steam superheat Failure of steam line condensate return comp
30. acitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury 26 Installation Figure 21 C 70 fastener holds 2 inch filter wu Figure 22 C 86 fastener shown or C 77 fastener holds 4 inch pleated filters Figure 23 Bag filter show with C 70 fastener Figure 24 C 80 spring fastener secures cartridge Side Load Filters Most filters in custom units are installed in unitary sheet metal frames If unit is provided with side access rack do the following for installation 2 inch or 4 inch flat filters 1 Disconnect the power to the unit 2 Open the filter section access door and remove the filters and block offs from their installed position 3 Slide the filter into the rack 4 Some side load racks will be provided with block off plates Install them into the rack last before closing the door 5 Close and secure the door making certain the door closes snug against the block off see Figure 25 CAH SVX01A EN e TRANE Bag or Cartridge Filters 1
31. acity Shaft size Capacity inches fluid ounce 1 2 3 4 1 7 7 8 13 16 3 8 11 4 11 2 5 8 1 11 16 1 15 16 7 8 2 27 16 1 1 4 2 1 2 2 15 16 2 51 e TRANE See A WARNING Hazardous Voltage with Capacitors on page 49 regarding disconnection of power Coils All coils should be kept clean to maintain maximum performance Steam and Water Coils To clean steam and water coils 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment use a soft brush to remove loose debris from both sides of the coil 3 Insert a block off to prevent steam from blowing through the coil and into a dry section of the unit 4 Use a steam cleaning machine to clean the coil cleaning the leaving air side of the coil first then the entering air side Repeat as necessary Note Start from the top of the coil and work downward 5 Straighten any coil fins that may have been damaged during the cleaning process 6 Confirm the drain line is open following the cleaning process 7 Allow the unit to dry thoroughly before putting it back into service 8 Replace all panels and parts and restore electrical power to the unit 9 Becareful any contaminated material does not contact other areas of the unit or building Properly dispose of all contaminated materials 52 Routine Maintenance Type K Cooling Coils Type K cooling coils have removable headers for cleaning
32. an section support base Shipping tie down blocks are bolted to the isolators between the fan base and the isolator support frame 24 Installation To activate the isolation remove the shipping tie down blocks Retain these blocks for use in adjusting isolators if necessary Isolator Adjustment Note Isolators are pre adjusted and set at the factory Follow this procedure only if necessary and as it applies to the isolators used in this unit This procedure for isolators can and should be performed by one person to ensure that the proper sequence is followed Isolators are selected for distribution of equipment weight but may not all compress the same This procedure assumes the base surface is level Isolators are not intended to be leveling devices 1 Verify that the shipping bolts that hold the fan base in a fixed position have been removed 2 Remove the jam nut on top of the isolator adjusting stud at the first isolator to be adjusted Check that the shipping block is in place Figure 19 Isolator ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s li
33. ated 15 amp circuit is recommended Factory mounted control systems ordered with factory mounted starters or VFDs are supplied with line to 24 Vac control transformers No additional power wiring is required For a more in depth understanding of controls refer to the following manuals e For factory configured AH540 AH541 controllers CNT SVX05B EN e For programmable MP580 controllers CNT SVP01A EN e For hardware installation CNT SVNO1A EN e For Danfoss VFD TR1 SVX10A EN e For universal programmable control modules UPCMs EMTX PG 5 EMTX IN 22A Custom air handlers and or field installed accessories that must be stored for a period of time prior to being installed must be protected from the elements All controllers and electrical electronic components should be stored in conditions of 20 to 120 F and 5 to 95 percent relative humidity non condensing Electrical components are not moisture tolerant Note The warranty will not cover damage to the unit or controls due to negligence during storage A controlled indoor environment is recommended for proper storage For further storage considerations refer to Job Site Storage Recommendations on page 7 e TRANE General Information Ultraviolet UV Germicidal Irradiation Lights optional The United States Environmental Protection Agency EPA believes that molds and bacteria inside buildings have the potential to cause health probl
34. cation on page 51 Outdoor Storage Considerations Outdoor storage is not recommended however when outdoor storage is necessary several things must be done to prevent damage Note Keep the equipment in the original shipping container for protection and ease of handling 1 Select a well drained area preferably a concrete pad or blacktop surface 2 Place the unit on a dry surface or raised off the ground to assure adequate air circulation beneath the unit and to assure no portion of the unit will contact standing water at any time 3 Loosen the belt tension on the drive belts Pre Installation Requirements 4 Cover the unit securely with a canvas tarp 5 Do not stack units 6 Do not pile other material on the unit Preparing the Unit Site 1 Ensure the installation site can support the total weight of the unit The building roof must be able to support the entire weight of the unit roof curb and accessories Refer to the unit submittals for weights 2 Allow sufficient space to allow adequate free air and necessary service access Refer to submittals for specific minimums 3 Allow room for supply and return piping ductwork electrical connections and coil removal 4 Ensure there is adequate height for condensate drain requirements See Drain Pan Trapping on page 29 Note Inadequate height may necessitate core drilling the floor to attain proper trap height Insufficient height could i
35. coil Metering too much refrigerant floods the compressor metering too little elevates the compressor temperature Choosing the correct size and type of expansion valve is critical to assure it will correctly meter refrigerant into the evaporator coil throughout the entire operating envelope of the system Correct refrigerant distribution into the coil requires an expansion valve for each distributor The thermal expansion valve must be selected for proper size and capacity The size of the expansion valve should cover the full range of loadings Check that the valve will successfully operate at the lightest load condition For improved modulation choose expansion valves with balanced port construction and external equalization Installation Cut the process tube and cap assembly from the liquid connection as shown in Figure 34 and install the expansion valve directly to the liquid connections CAUTION Valve Damage Disassemble the thermal expansion valve before completing the brazing connections If necessary wrap the valve in a cool wet cloth while brazing Failure to protect the valve from high temperatures may result in damage to internal components Suction Lines Line sizing Proper suction line sizing is required to guarantee the oil returns to the compressor throughout the system s operating envelope At the same time the line must be sized so that the pressure drop does not excessively affect capacity
36. coil as possible e For coil types A AA N NS and NN install the vacuum breaker in the unused condensate return tapping at the top of the coil Types T and ST coils require that the vacuum breaker be located as near as possible to the supply connection e Vent the vacuum breaker line to atmosphere or connect it into the return main at the discharge side of the steam trap Note Vacuum breaker relief is mandatory when the coil is controlled by a modulating steam supply or automatic two position ON OFF steam supply valve Vacuum breaker relief is also recommended when face and bypass control is used CAUTION Coil Damage In all steam coil installations the condensate return connections must be at the low point of the coil Failure to properly install the condensate return connection may result in coil damage from water hammer unequal thermal stress freeze up and or corrosion Note The 1 2 inch NPT 15 degree swing check valve vacuum breaker is recommended because other vacuum breakers such as spring loaded ball check breakers have cracking pressures as high as 1 25 inches Hg 17 inches of water Vacuum breakers with fitting sizes smaller than 1 2 inch NPT are too small to relieve vacuum quick enough to ensure complete condensate drainage Other types of swing check valve vacuum breakers are acceptable if the fittings size is not smaller than 1 2 inch NPT and the cracking pressure is not larger than 0
37. ction of flow Use the tube diameter that matches the suction header connection Figure 38 Dual circuit evaporator coil with two distributors suction line circuit 2 78 6 suction line circuit 1 3 7 8 5 rs 4 el 3 5 38 A o AA solenoid valve en liquid line circuit 1 thermal expansion valve TXV liquid line circuit 2 The top of the Circuit 2 suction riser must be higher than the top evaporator coil Use the tube diameter recommended by the condensing unit manufacturer for the riser Pitch the suction lines slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Insulate the suction lines Evaporator Coil with Horizontal Split Standard Circuiting filter drier CAH SVX01A EN e TRANE Dual Circuit Condensing Units Evaporator Coil with Four Installation A I o oRQ n s Figure 39 Dual circuit evaporator coil with four distributors Distributors see Figure 39 1 Pitch the liquid line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Provide one expansion valve per distributor Slightly pitch the outlet line from the suction header toward the suction riser that is 1 inch 10 feet 1 cm 3 m in the direction of flow Use the tube diameter that matches the suction header connection Arrange the suction line so the refrigerant gas leav
38. cuit Condensing Units Evaporator Coil with One Distributor see Figure 35 1 Pitch the liquid line slightly 1 inch 10 feet 1 cm 3 m so that the refrigerant drains toward the evaporator Provide one expansion valve per distributor Slightly pitch the outlet line from the suction header toward the suction riser that is 1 inch 10 feet 1 cm 3 m in the direction of flow Use the tube diameter that matches the suction header connection Figure 35 Single circuit evaporator coil with one distributor expansion valve TXV distributor solenoid valve For the vertical riser use the tube diameter recommended by the condensing unit manufacturer Assure the top of the riser is higher than the evaporator coil Arrange the suction line so the refrigerant gas leaving the coil flows downward past the lowest suction header outlet before turning upward Pitch the suction line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Insulate the suction line Evaporator Coil with Standard Circuiting filter drier 35 Installation e TRANE Figure 36 Single circuit evaporator coil with two distributors suction line 7 8 ME _ trim H solenoid valve c thermal 3 expansion 6 5 mM pump down 3 solenoid valve 4 distributor suction line 7 8 A 1 e 3 solenoid 5 valve i thermal 3 expans
39. dation of these materials can result in serious damage to the equipment Trane accepts no responsibility for the performance or operation of our air handling equipment in which ultraviolet devices were installed outside of the Trane factory CAH SVX01A EN e TRANE Receiving Checklist Based on customer requirements Custom Climate Changer air handlers can ship as complete units or as individual sections to be field assembled Upon receipt of the unit s and prior to unloading remove any shipping material and inspect the unit for damage and verify that the shipment is complete Note Delivery cannot be refused Trane is not responsible for shipping damage 1 Visually inspect components for any damage that may have occurred during shipment 2 Checkall access doors to confirm that the latches and hinges are not damaged 3 Inspect the interior of each section for any internal damage Note Concealed damage must be reported within 15 days of receipt 4 Inspect the coils for damage to the fin surface and or coil connections 5 If the unit was ordered with factory mounted controls locate all sensors Note Items that cannot be factory mounted should ship inside the control enclosures or should be packaged inside the fan module or mixing box module 6 Check all devices attached to the unit exterior and confirm that they are not damaged CAH SVX01A EN Pre Installation Requirements N Manually ro
40. e damper actuators are not factory mounted install damper actuators and connecting linkage Check damper operation and linkage alignment Damper blades should be non binding Adjust damper frame as necessary to ensure free blade movement Magnahelic Air Filter Gage Check zero adjustment of the gage Turn both vent valves to the Vent position and adjust the gage pointer to zero by means of the external adjustment screw in the face of the gage After zeroing turn the vent valves to the Line position 25 e TRANE Air Filters Front Load Filters Most filters in custom units are installed in unitary sheet metal frames Filters are secured with a metal clip There are several different styles To install filters 1 Disconnect power to the unit 2 Open or remove the filter clip 3 Remove the filter from the rack 4 Install new filters with the directional arrows pointing in the direction of airflow 5 Secure the filter using the appropriate clip for each filter Review Figure 21 through Figure 24 for an explanation of the methods for securing the different types of filters The filters are often installed in a pre post filter configuration Be sure to note the order of installation Note Filters must have an airtight seal to prevent air bypass ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run cap
41. ect operation tension for a V belt drive is the lowest tension at which the belts will not slip under the peak load conditions It may be necessary however to increase the tension of some drives to reduce excessive belt flopping or to reduce excessive startup squealing Figure 46 Belt tension measurement Deflection N Belt Span 64 Figure 47 Belt tensioner Force Scale Span Scale Large O Ring Beit Span r 45 e TRANE Sain Table 3 Typical sheave diameter and deflection force1 Belt Deflection Force Ibs Smallest Sheave Super Gripbelts and Gripnotch Belts and Cross Diameter Range Speed rpm Unnotched Gripbands Notched Gripbands Section in Range Used Belt New Belt Used Belt New Belt 3 0 3 6 1 000 2 500 3 7 5 5 4 1 6 4 2 501 4 000 2 8 4 2 3 4 5 0 A AX 3 8 4 8 1 000 2 500 4 5 6 8 5 0 7 4 2 501 4 000 3 8 5 7 4 3 6 4 5 0 7 0 1 000 2 500 5 4 8 0 5 7 9 4 2 501 4 000 4 7 7 0 5 1 7 6 3 4 4 2 860 2 500 n a n a 4 9 7 2 2 501 4 000 n a n a 4 2 6 2 B BX 4 4 5 6 860 2 500 5 3 7 9 7 1 10 5 2 501 4 000 4 5 6 7 7 1 9 1 5 8 8 6 860 2 500 6 3 9 4 8 5 12 6 2 501 4 000 6 0 8 9 7 3 10 9 7 0 9 0 500 1 740 11 5 17 0 14 7 21 8 C cx 1 741 3 000 9 4 13 8 11 9 17 5 d 9 5 16 0 500 1 740 14 1 21 0 15 9 23 5 1 741 3 000 12 5 18 5 14 6 21 6 12 0 16 0 200 850 24 9 37 0 n a n a D 851 1 500 21 2 31 3 n a n a 18 0 20 0 200 850 30 4 45 2 n a n a 851 1 500 25 6 38 0 n a n a 2 2 2 4 1 000 2 500
42. ected surfaces thoroughly with fresh water and a fresh sponge to prevent potential corrosion of metal surfaces 7 Allow the unit to dry completely before putting it back into service 8 Becareful that any contaminated material does not contact other 50 Routine Maintenance areas of the unit or building Properly dispose of all contaminated materials and cleaning solution Fans Inspecting and Cleaning Fans Fan sections of air handlers should be inspected every six months at a minimum or more frequently if operating experience dictates If evidence of microbial growth mold is found identify and remedy the cause immediately Refer to the Troubleshooting section on page 56 for possible causes and solutions To clean the fan section 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment remove any contamination 3 Vacuum the section with a vacuum device that uses high efficiency particulate arrestance HEPA filters with a minimum efficiency of 99 97 percent at 0 3 micron particle size Figure 49 Bearing set screw alignment 4 Thoroughly clean all areas with a mild bleach and water solution or an EPA approved sanitizer specifically designed for HVAC use 5 Immediately rinse the affected surfaces thoroughly with fresh water and a fresh sponge to prevent potential corrosion of metal surfaces 6 Allow the unit to dry completely before putting i
43. elerate future glass soiling and degrade the bulb performance 5 Carefully return the bulb to the fixture and rotate it 90 degrees in either direction until it is firmly secured 6 Close and latch all unit panels and reenergize power to the lights Replacement of ultraviolet bulbs The ultraviolet bulb should be replaced annually if operated continuously or after 9 000 hours of use if operated intermittently Replacement bulbs must be the specific size and wattage as originally supplied from the factory Note Although the lights may continue to generate a characteristic blue glow beyond 9 000 operating hours the ultraviolet radiation emitted by the bulbs degrades over time and will no longer provide the intended benefit 1 Disconnect power to the HVAC unit and the ultraviolet bulbs 2 Wearing soft cloth gloves and safety glasses use two hands to firmly grasp bulb at each end 3 Rotate bulb 90 degrees in either direction and move bulb away from the fixture and out of unit 4 Carefully install a new replacement bulb in the fixture and rotate it 90 degrees in either direction until firmly secured 5 If broken bulbs are found or if you are required to dispose of used bulbs the proper warning and cautions must be followed 6 After replacing bulbs close and latch all unit panels and reenergize power to the lights 55 e TRANE Troubleshooting This section is intended to be used as a diagnostic aid o
44. ems in sensitive individuals If specified Trane provides ultraviolet lights UV C as a factory engineered and installed option in select commercial air handling products When UV lights are factory provided polymer materials that are susceptible to deterioration by the UV C light will be substituted or shielded from direct exposure to the light In addition UV C radiation can damage human tissue namely eyes and skin To reduce the potential for inadvertent exposure to the lights by operating and maintenance personnel electrical interlocks that automatically disconnect power to the lights are provided at all unit entry points to equipment where lights are located 1 United Sates Environmental Protection Agency A Brief Guide to Mold Moisture and your Home Brochure EPA 402 K 02 003 ZA WARNING Equipment Damage From Ultraviolet UV Lights Trane does not recommend field installation of ultraviolet lights in its air handling equipment for the intended purpose of improving indoor air quality High intensity C band ultraviolet light is known to severely damage polymer plastic materials and poses a personal safety risk to anyone exposed to the light without proper personal protective equipment can cause damage to eyes and skin Polymer materials commonly found in HVAC equipment that may be susceptible include insulation on electrical wiring fan belts thermal insulation various fasteners and bushings Degra
45. event the fan from shifting during shipment and installation These spacers must be removed prior to fan operation to assure proper vibration isolation Retain these spacers for use in adjusting fan isolators if required The units are available with factory mounted controls for climate and humidity control These can be use as stand alone devices or operate with a complete controls system End devices include factory mounted starters and variable speed drives CAH SVX01A EN Introduction Refrigerant used in any type of air conditioning or refrigerating equipment should be recovered for reuse recovered and or recycled for reuse reprocessed reclaimed or properly destroyed whenever it is removed from equipment Never release it to the atmosphere Custom Climate Changer air handlers ship as complete assemblies or in sections Some jobsite assembly is required when the units ship in sections Protecting the Environment World environmental scientists have concluded based on the best currently available evidence that ozone in our upper atmosphere is being reduced due to the release of CFC chlorofluorocarbon fully halogenated compounds Trane urges that all HVAC servicers working on Trane equipment or any manufacturer s products make every effort to eliminate if possible or vigorously reduce the emission of CFC HCFC halocarbon that contains fluorine chlorine carbon and hydrogen and HFC halocarbon
46. f UV bulbs are broken an appropriate respirator should be considered to prevent inhalation of mercury vapors Failure to use a respirator could result in death or serious injury ZA CAUTION Broken Glass Bulbs are fragile and can be easily broken Always use gloves and eye protection when handling these bulbs Failure to handle bulbs properly may result in minor to moderate injury Refer to the MSDS sheet from the bulb manufacturer for additional safety information Always use cloth gloves and suitable eye protection when cleaning or replacing these bulbs Bulbs may break if dropped or handled improperly Disposal of Bulbs UV bulbs like fluorescent bulbs contain mercury which is a regulated hazardous waste The disposal requirements for hazardous wastes are determined by local state and federal guidelines Check all regulations before disposing of bulbs to assure you have met all requirements Refer to the MSDS sheet from the bulb manufacturer for additional disposal handling and safety information To clean the bulbs 1 Disconnect all electrical power to the unit and the ultraviolet bulbs 2 Wearing soft cloth gloves and safety glasses use two hands and firmly grasp the bulb at each end 3 Rotate the bulb 90 degrees in either direction and move bulb away from the fixture and out of unit 4 Wipe down each bulb with a clean cloth and alcohol Avoid touching the bulb with bare hands as skin oils can acc
47. hly clean all areas with an EPA approved sanitizer specifically designed for HVAC use 5 Rinse the affected surfaces thoroughly with fresh water and a fresh sponge to prevent potential corrosion of the drain pan and drain line 6 Repeat steps 4 and 5 as necessary 7 Confirm the drain line is open following the cleaning process 8 Allow the unit to dry thoroughly before putting it back into service 9 Replace all panels and parts and restore electrical power to the unit 10 Be careful that any contaminated material does not contact other areas of the unit or building Properly dispose of all contaminated materials and cleaning solution To clean a porous insulating surface fiberglass insulation 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment use a vacuum device with a HEPA filter 99 97 percent efficient at 0 3 micron particles to remove the accumulated dirt and organic matter Note Be careful not to tear the insulation surface or edges 3 Confirm the drain line is open following the cleaning process 4 Allow the unit to dry thoroughly before putting it back into service 5 Replace all panels and parts and restore electrical power to the unit 6 Becareful that any contaminated material does not contact other areas of the unit or building Properly dispose of all contaminated materials and cleaning solution CAH SVX01A EN e TRANE
48. ically inspected to assure the insulation is clean and dry Wet insulation in an area that is normally considered to be dry can indicate an operational problem refer to the Troubleshooting section on page 56 for further information The equipment should be inspected a minimum of every six months or more frequently as operating experience dictates 54 Routine Maintenance Accumulated dirt and other organic matter exposed to water or extended periods of high relative humidity 60 percent or higher can support microbial growth which must be removed to prevent the unit from becoming a contaminant source If evidence of contamination exists in either the wet or dry sections e Determine and eliminate the cause e Remove the contamination e Sanitize the affected area See the Troubleshooting section on page 56 for assistance in identifying the cause If microbial growth on a non porous insulating surface closed cell insulation or sheet metal surface is observed 1 Disconnect all electrical power to the unit 2 Wearing the appropriate personal protective equipment use a brush for sheet metal surfaces or a soft sponge on a foil face or closed cell foam surface to mechanically remove the microbial growth Note Be careful not to damage the non porous surface ofthe insulation 3 Install a block off to prevent spray from going into a dry section of the unit and or system ductwork 4 Thoroug
49. icensed electrician or other individual who has been trained in handling live electrical components perform these tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury Table 5 Routine maintenance checklist Frequency Maintenance After 48 hours of operation Belts have acquired their permanent set Readjust but do not overtighten See the Tension the Fan Belt section on page 45 for more information Every week Observe unit weekly for any change in running condition and unusual noise Every month Clean or replace air filters if clogged or dirty coat permanent filters with oil after cleaning See the Air Filters section on page 49 for more information Check and adjust fan belt tension Relubricate fan bearings if necessary See the Fan Bearing Lubrication section on page 51 for more information Every three to six months page 47 for more information Check fan bearing grease line connections Lines should be tight to the bearings Check bearing and motor bracket bolt torque and bearing setscrew torque Align fan and motor sheaves Tighten sheave set screws to the proper torque See the Sheave Alignment section on Inspect and clean drain pans See the Drain Pans section on page 50 for more information Tighten electrical connections Inspect coils for dirt build up See the Coils section on page 52 for more information Ever
50. il us at comfortOtrane com Literature Order Number CAH SVX01A EN Date July 2005 Supersedes New Stocking Location Inland Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice
51. in see Figure 46 and Figure 47 ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury CAUTION Tension Belts Correctly Over tensioning belts can cause damage to bearings shafts and drive components Under tensioning belts is the primary cause of premature belt failure Belts should not squeal at startup Recheck belt tension after 8 hours 24 hours and 100 hours of operation and monthly thereafter CAH SVX01A EN Startup Proper belt tension is required to ensure maximum bearing and drive component life and is based on motor horsepower requirement A label located on the bearing support on the drive side of the unit lists all drive parts the proper belt tension and deflection for that tension for the specific drive If the drive is changed from the original proper belt tension can be estimated using Table 3 The corr
52. in custom units are installed in unitary sheet metal frames Filters are secured with a metal clip There are several different styles To install filters 1 Disconnect power to the unit 2 Open or remove the filter clip 3 Remove the filter from the rack 4 Install new filters with the directional arrows pointing in the direction of airflow 5 Secure the filter using the appropriate clip for each filter The filters are often installed in a pre post filter configuration Be sure to note the order of installation Note Filters must have an airtight seal to prevent air bypass Side Load Filters Most filters in custom units are installed in unitary sheet metal frames If unit is provided with side access rack do the following for installation 2 inch or 4 inch flat filters 1 Disconnect the power to the unit 2 Open the filter section access door and remove the filters and block offs from their installed position 3 Slide the filter into the rack 4 Some side load racks will be provided with block off plates Install them into the rack last before closing the door 5 Close and secure the door making certain the door closes snug against the block off Bag or Cartridge Filters 1 Disconnect power to the unit 2 Keeping the bag filters folded slide each filter into the filter rack pushing them tightly against the unit Pleats should be in the vertical position 3 If using optional pre filters slide
53. ing from the surfaces to be joined 2 Place one section of the air handler into the desired position Verify each section is level and properly supported prior to proceeding with assembly Each unit must be level side to side and front to back Check squareness measuring the critical dimensions given 3 When the unit is positioned and squareness is assured within 1 8 inch remove all lifting lugs located along the split plane 4 Install 4 inch x 1 4 inch neoprene gasket to all mating surfaces of the section including the internal walls This gasket must be applied to the full perimeter of the section split of both sections to be joined 5 Move the next mating section into alignment with the positioned section Alignment of sections must be completed before gasket surfaces meet The 12 Installation two sections should be within 12 inches to reduce the amount of dragging required 6 Remove lifting lugs on mating section as required 7 Insert threaded rods through each hole of each mating connecting plate see Figure 4 Bring each connecting surface together uniformly until gasketing is contacted Note Use field provided threaded rods inserted in all holes of each connecting plate to prevent damage and distortion of the sections as they are joined Tighten all rods in sequence Do not try to join sections by tightening only some of the rods CONNECTING PLATES Note Failure to compress the gasketing may
54. ing the coil flows downward past the lowest suction header outlet before turning upward Use a double elbow configuration to isolate the thermal expansion valve bulb from other suction headers For horizontal tubing use the tube diameter recommended by the condensing unit manufacturer For the vertical riser use the tube diameter recommended by the condensing unit manufacturer Assure the top of the riser is higher than the evaporator coil Pitch the suction line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Insulate the suction line CAH SVX01A EN Evaporator Coil with Horizontal Split S ctioniline Standard Circuiting circuit 2 T thermal expansion liquid line 7 8 pa valves TXV solenoid circuit 2 valve 10 LEP suction line 5 a E circuit 1 7 8 3 E liquid line cl AN 5 3 9 filter drier 3 IE 4 distributor Evaporator Coil with suction lines Intertwined Circuiting thermal expansion liquid line 78 T valves TXV circuit 2 3 g C0 77 B s 7 C solenoid valve 5 liquid line ua circuit 1 6 6 filter drier A 4 distributor The top of the Circuit 1 suction riser must be higher than the bottom evaporator coil Use the tube diameter recommended by the condensing unit manufacturer for the riser 10 The top of the Circuit 2 suction riser m
55. ion valve TXV 4 distributor Single Circuit Condensing Units Evaporator Coil with Two Distributors see Figure 36 1 Pitch the liquid line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator 2 Provide one expansion valve per distributor Arrange the suction line so the refrigerant gas leaving the coil flows downward past the lowest suction header outlet before turning upward Use a double elbow configuration to isolate the thermal expansion valve bulb from other suction headers For horizontal tubing use the tube diameter recommended by 3 Slightly pitch the outlet line from the condensing unit the suction header toward the manufacturer ti i that is 1 inch O 2 b nG y 5 For the vertical riser use the tube 10 feet 1 cm 3 m in the direction 3 diameter recommended by the of flow Use the tube diameter condensing unit manufacturer that matches the suction header i connection Assure the top of the riser is higher than the evaporator coil 36 Evaporator Coil with Horizontal Split Standard Circuiting filter drier Evaporator Coil with Intertwined Circuiting filter drier Pitch the suction line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator Insulate the suction line Only use a trim solenoid valve for constant volume humidity sensitive applications
56. is less than 5 mega ohms the winding should be dried out in an oven or by a blower e Inspect the entire motor for rust and corrosion 43 e TRANE General Checks e Ensure the unit has been installed level e Ensure supply air and return air ducts have been connected e Ensure damper operator motors and connecting linkage have been installed e Verify damper operation and linkage alignment e Check that air filters are in place and positioned properly e Remove any debris from the unit interior e Close and secure all unit access doors Note UL listed units require a removable latch on access doors The door clip shipped with the unit meets this requirement e Inspect electrical connections to the unit and unit controllers Connections should be clean and secure Compare the actual wiring with the unit diagrams Reference the appropriate controller manual for more details about starting units with factory mounted controls e Leave this manual with the unit 44 Startup Unit Operation Before complete startup bump start the unit and confirm the fan wheel rotates properly as indicated by the rotation arrow located on the fan housing After initial startup e Calculate the motor voltage imbalance notifying the power company to correct unacceptable imbalances e Periodically check the fan belt tension Calculate Motor Voltage Imbalance After startup measure
57. lant on the roof curb is intact and provides an airtight seal with the unit base e Complete all ductwork piping and electrical connections only after mounting the unit Assembly Hardware Air handlers ship with all necessary assembly hardware and gasket material This hardware is packaged in either a clear plastic envelope or cardboard box and can be found inside one of the sections If space inside a section is not adequate a crate or pallet will be loaded onto the bed of the truck Check the Parts List on the Field Assembly drawing against the contents of the crate Do not proceed with unit assembly until verification that all materials are present The number of sections to be assembled often makes it necessary to use more than one section to ship the material Please check all sections thoroughly before contacting your local Trane sales engineer to report missing hardware 11 e TRANE TCP Model Assembly Instructions If your nameplate model number begins with TCP use the assembly instructions below Joining Sections Edge to Edge Units must be installed level for proper drainage of condensate from the drain pan In addition each section in a multi section unit must be properly supported Note Leveling each section beginning with the first is critical Failure to level and align the sections immediately creates greater misalignment or even structural damage afterward 1 Remove all crating and wrapp
58. ls are put back into service CAUTION Twisted Tubes Use care in removing header plugs from type P2 P4 and P8 coils Overtorquing may result in twisted tubes Type K Coils 1 Remove all vent and drain plugs 2 Allow the water to drain from the coil 3 Remove the header covers 4 lf tubes are fouled clean the tubes with a nylon or wire brush 5 To ensure no water remains in the coil do not replace the header covers until the coils are put back into service Note When the coils are put back into service use new gaskets Trane recommends washers be used under the bolt heads and bolts be evenly tightened to 50 ft Ibs torque Moisture Purge Cycle By it s very nature any HVAC unit with a cooling coil serves as a dehumidifier reducing the surrounding air s ability to hold water vapor as its temperature falls This normally doesn t present a problem when the unit is running However when the fan stops water vapor condenses on the cold metal surfaces inside the air handler and remains there until the air warms sufficiently to re evaporate it Providing a moisture purge cycle 15 to 30 minutes after shutdown disperses the cold humid air inside the air handling system more evenly throughout the building This four step cycle e Closes the outdoor air dampers Turns off the cooling coil e Opens any variable air volume terminals connected to the air handler e Operates the supply fan for 10
59. n a n a 3 3 4 9 2 501 4 000 n a n a 2 9 4 3 2 65 3 65 1 000 2 500 3 6 5 1 4 2 6 2 aa 2 501 4 000 3 0 4 4 3 8 5 6 4 12 6 90 1 000 2 500 4 9 7 3 5 3 7 9 2 501 4 000 4 4 6 6 4 9 7 3 4 4 6 7 500 1 749 n a n a 10 2 15 2 1 750 3 000 n a n a 8 8 13 2 3 001 4 000 n a n a 5 6 8 5 5V 5VX 7 1 10 9 500 1 749 12 7 18 9 14 8 22 1 1 750 3 000 11 2 16 7 13 7 20 1 11 8 16 0 500 1 749 15 5 23 4 17 1 25 5 1 750 3 000 14 6 21 8 16 8 25 0 12 5 17 0 200 850 33 0 49 3 n a n a 8v 851 1 500 26 8 39 9 n a n a 18 0 22 4 200 850 39 6 59 2 n a n a 851 1 500 35 3 52 7 n a n a 1 Source for table Browning catalog DC 98 page B 30 46 CAH SVX01A EN e TRANE Determine Fan Speed ZA WARNING Rotating Components During installation testing servicing and troubleshooting of this product it may be necessary to measure the speed of rotating components Have a qualified or licensed service individual who has been properly trained in handling exposed rotating components perform these tasks Failure to follow all safety precautions when exposed to rotating components could result in death or serious injury Fan speed can be determined using a strobe type tachometer or revolution counter Check unit vibration if the fan speed is changed more than 5 percent from the original designed speed or if parts such as shafts fan wheels bearings or other drive components are replaced Do not exceed the maximum fan speed Pay particular attention to any
60. ndensation Components Installing the suction line requires field installation of these components a filter access port and a Frostat control when the refrigerant coil is used with Trane condensing units Position them as close to the compressor as possible Note Placement of the Frostat control is illustrated in Figure 33 e Filter The suction filter prevents contaminants introduced during installation from entering the compressor For this reason the suction filter should be the replaceable core type and a clean core should be installed after the system is cleaned up e Access port The access port is used to determine suction pressure This port is usually a Schraeder valve with a core CAH SVX01A EN e TRANE Frostat coil frost protection The Frostat control is the preferred method for protecting evaporator coils from freezing when the refrigerant coil is used with Trane condensing units It senses the suction line temperature and temporarily disables mechanical cooling if it detects frost conditions The control is mechanically attached to the outside of the refrigerant line near the evaporator and wired to the unit control panel Ball shutoff valve Adding manual ball type shutoff valves upstream and downstream of the filter simplifies replacement of the filter core suction line 6 7 CAH SVX01A EN Installation A 2 2 Examples of Field Installed Evaporator Piping Single Cir
61. nduit assembly Double wall panel ae End panel Valve jack wiring Valve connection Installation A External Insulating Requirements The following areas should be specifically addressed as applicable e Supply and return water piping connections e Supply and return refrigerant piping connections e Condensate drain lines and connections e Outdoorairintake duct connections e Discharge duct connections e Special requirements for low temperature air systems Airflow Black connector is for 24 Vac power supply black wire for GND and red wire for 24 Vac White connector is for 0 to 10 Vac analog signal black wire for GND and red wire for 0 to 10 Vac 42 CAH SVX01A EN e TRANE Once the Custom Climate Changer air handler has been assembled and installed attention must be directed to individual components for proper operation Before operating the unit complete the pre startup checklist ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy storing components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate
62. nections Worn motor bearings Fan rubbing on fan cover Tighten motor mounting bolts Replace with flexible connections Replace bearings and seals Remove interference in motor fan housing Rapid motor bearing Excessive overhung load due to overtensioned wear drive Excessive overhung load due to a small diameter motor sheave Check belt tension and overhung load Replace sheave with larger one Loose fan belt Motor is poorly positioned Worn or damaged belt Worn sheaves Adjust belt tension Replace belt or belt set Check sheave alignment Replace sheaves 56 CAH SVX01A EN e TRANE Table 5 Air handler troubleshooting recommendations Troubleshooting a o __EOO gt E_EECA uM Symptom Short belt life Probable Cause Worn sheaves Misaligned belt Grease or oil on belts Belt slipping Belts rubbing Recommended Action Replace sheaves Realign drive with MVP sheave set at mean pitch diameter Check for leaky bearings Clean belts and sheaves Improper belt tension Adjust tension Remove obstruction or realign drive for clearance Bearing noise Poor alignment Failed bearing Inadequate lubrication Loosen bearing set screws and realign see the Bearing Set Screw Alignment section on page 50 Replace bearing Replace bearing Low water coil capacity Incorrect airflow Incorrect water flow Incorrect water temperature Coil is piped incorrectly Dirty fin surf
63. nhibit condensate drainage and result in flooding the unit and or equipment room ZA WARNING Level Foundation The floor or foundation must be level and the condensate drain at the proper height for proper coil drainage and condensate flow Standing water and wet surfaces inside air handling units could result in microbial growth which may cause unpleasant odors serious health problems or death 5 Confirm the foundation of the mounting platform is level and large enough to include the unit dimensions refer to the unit submittals for specific dimensions 6 Provide adequate lighting for maintenance personnel to perform maintenance duties 7 Provide permanent power outlets in close proximity to the unit for installation and maintenance 8 Depending upon job requirements the customer may need to provide 120 Vac power to the unit controller Refer to submittals for more information A dedicated 15 amp circuit is recommended 9 Wiring for Custom units must be provided by the installer and must comply with all national and local electrical codes 10 Rooftop curb mounted units must be sealed tightly to the curb Use proper sealants and roof to curb sealing techniques to prevent water and air leakage Note Preparation of the roof curb or pier mount and roof openings should be completed prior to lifting the unit to the roof CAH SVX01A EN e TRANE Pre Installation Requirements Roof Curb Installation
64. nly For detailed repair procedures contact your local Trane service representative Procedures The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical mechanical or other potential safety hazards Always refer to the safety warnings provided throughout this manual concerning these procedures When possible disconnect all electrical power Table 8 Air handler troubleshooting recommendations ZA WARNING Hazardous Service including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized When necessary to work with live electrical components have a qualified licensed electrician or other individual who has been trained in handling live electrical components perform these tasks Failure to follow all of the recommended safety warnings provided could result in death or serious injury Symptom Probable Cause Bearing is excessively hot Over lubrication Over tensioned belts No lubricant Misaligned bearing First start after relubrication grease distribution Recommended Action Allow machine to cool down and restart Clean surface of grease and purge Adjust belt tension Apply lubricant Check bearings for damage Correct alignment Check shaft level Motor fails to start Blown fuse or open circuit breaker Overload trip Improper wiring or connections Impro
65. o properly seal penetrations may cause water leakage CAUTION Use Approved Glycol If glycol is used in chilled water or hot water systems use a glycol approved for use with commercial cooling and heating systems and copper tube coils Failure to do so may result in equipment damage CAUTION Use a Backup Wrench Use a backup wrench when attaching piping to coils with copper headers to prevent damage to the coil header Do not use brass connectors because they distort easily and may cause connection leaks CAH SVX01A EN e TRANE Drain Pan Trapping Threaded condensate drain connections are provided on only one side of the coil module Pitch the connection lines horizontal or downward toward an open drain Trane recommends installing a plug to facilitate cleaning of the trap Figure 26 illustrates the proper trapping piping and operation of the trap for negative pressure modules Use the formula under the figure to determine the correct minimum depth for the condensate trap Figure 27 illustrates the proper trapping piping and operation of the trap for positive pressure modules CAUTION Water Damage When more than one module has a drain pan trap each module individually Connecting all drains to a common line with only one trap may result in condensate retention and possible water damage to the air handler or adjoining space CAH SVX01A EN Installation A a ee Figure 26 Drain pan trapping f
66. on the components as close to the evaporator as possible Filter drier There is no substitute for cleanliness during system installation The filter drier prevents residual contaminants introduced during installation from entering the expansion valve and solenoid valve Access port The access port allows the unit to be charged with liquid refrigerant and is used to determine subcooling This port is usually a Schraeder valve with a core Solenoid valve In split systems solenoid valves isolate the refrigerant from the evaporator during off cycles under certain conditions they may also trim the amount of active evaporator as compressors unload Generally the trim solenoid valve is unnecessary for variable air volume comfort cooling applications and is only required for constant volume applications when dehumidification is a concern Moisture indicating sight glass Be sure to install one moisture indicating sight glass in the main liquid line The only value of the sight glass is its moisture indication ability Use actual measurements of temperature and pressure not the sight glass to determine subcooling and whether the system is properly charged The moisture indicator sight glass must be sized to match the size of the liquid line at the thermal expansion valve 33 e TRANE e Thermal expansion valve The expansion valve is the throttling device that meters the refrigerant into the evaporator
67. onents Boiler failure Dirty fin surface Check fan operating condition Verify coil piping see the Coil Piping and Connections section on page 28 Verify steam pressure and adjust if necessary Check steam superheat Steam superheat should not exceed 50 F Verify component operation Verify boiler operation Clean the fin surface see the Coils section on page 52 Drain pan is overflowing Plugged Drain Line Unit not level Improper trap design Clean drain line Level unit Design trap per unit installation instructions Standing water in drain pan Improper trap design Unit not level Plugged Drain Line Design trap per unit installation instructions Level unit Clean drain line Wet interior insulation Coil face velocity too high Improper trap design Drain pan leaks overflows Condensation on surfaces Reduce fan speed Design trap per unit installation instructions Repair leaks Insulate surfaces Excess dirt in unit Missing filters Filter bypass Replace filters Reduce filter bypass by ensuring all blockoffs are in place Microbial growth mold inside air handler Standing water in drain pan See Standing water in drain pan CAH SVX01A EN 57 Notes CAH SVX01A EN e TRANE CAH SVX01A EN Notes 59 e TRANE Trane A business of American Standard Companies www trane com For more information contact your local Trane office or e ma
68. or efficiency To accomplish both objectives it may be necessary to use two different line diameters one for the horizontal run and for vertical drops and another for the vertical lifts Figure 34 Type F refrigerant coil with packed elbow Panel 34 Perforated plate packed elbow Cut here for piping Venturi type distributor Routing To prevent residual or condensed refrigerant from free flowing toward the compressor install the suction line so it slopes slightly that is by 1 4 inch to 1 inch per 10 feet of run 1 cm per 3 m toward the evaporator When the application includes a suction riser oil must be forced to travel the height of the riser Riser traps and double risers are unnecessary in the suction line when the refrigerant coil is used with Trane condensing units Avoid putting refrigerant lines underground Refrigerant condensation or installation debris inside the line service access and abrasion corrosion can quickly impair reliability Insulation Any heat that transfers from the surrounding air to the cooler suction lines increases the load on the condenser reducing the system s air conditioning capacity and promotes condensate formation adversely affecting indoor air quality After operating the system and testing all fittings and joints to verify the system is leak free insulate the suction lines all the way to inner side panel to prevent heat gain and unwanted co
69. or module under negative pressure L H J pipe diameter where H 1 inch for each inch of negative pressure plus 1 inch J 1 2H Negative pressure total unit static pressure at worst case loaded filters minus external pressure Figure 27 Drain pan trapping for module under positive pressure K 1 2 inch minimum H 1 2 inch plus the total unit static pressure at worst case loaded filters 29 e TRANE Steam Coil Piping M Series air handlers fitted with steam coils have labeled holes for piping penetrations Figure 28 and Figure 29 illustrate typical steam coil piping configurations See Table 2 for the codes of system components in these figures Table 2 Code of system components for piping figures Code System component FT Float and thermostatic steam trap GV Gate valve OV Automatic two position ON OFF control valve VB Vacuum breaker ST Strainer AV Automatic or manual air vent MV Modulating control valve The coil condensate return line must be piped full size of the condensate trap connection except for a short nipple screwed directly into the coil header s condensate return tapping Do not bush or reduce the coil return tapping size 30 Installation e Install a 1 2 inch NPT 15 degree swing check valve vacuum breaker with cracking pressure of 0 25 inches Hg 3 5 inches water or lower at the top of the coil This vacuum breaker should be installed as close to the
70. per current supply Mechanical failure Replace fuse or reset circuit breaker Check and reset overload Check wiring with diagram supplied on unit Compare actual supply power with motor nameplate recommendations Contact power company for adjustments Check that motor and drive rotate freely Check bearing lubricant Motor stalls Open phase Overloaded motor Low line voltage Check line for an open phase Reduce load or replace with larger motor Check across AC line Correct voltage if possible Excessive vibration Poor alignment Bolts not removed Over tensioned belts Misaligned drive Align bearing set screws see Figure 49 Loosen and retighten bearing set screws Remove bolts see the Isolator Adjustment section on page 24 Adjust belt tension Align drive Motor runs and then Partial loss of line voltage dies down Starter shorts when motor warms up Check for loose connections Determine adequacy of main power supply Replace starter Motor does not come Low voltage at motor terminals up to speed Line wiring to motor too small Check across AC line and correct voltage loss if possible Replace with larger sized wiring Motor overheats Overloaded motor Motor fan is clogged with dirt preventing proper ventilation Reduce load or replace with a larger motor Remove fan cover clean fan and replace cover Excessive motor noise Motor mounting bolts loose Rigid coupling con
71. r horizontally to the return piping Note T ST and TT coils are designed with larger than normal end tube sheet holes to allow for maximum expansion Air leakage around tubes should be expected and handled by capping over coil ends or by sealing around tubes with a pliable sealant such as silicone 32 Installation Figure 30 Typical piping for type 5W one row water coil Figure 31 Typical piping for type 5A 5W two row K W 3 to 12 row WD D and DD water coils CAH SVX01A EN e TRANE Refrigerant Coil Piping Note Refer to the Protecting the Environment section on page 3 for information on handling refrigerants Use Figure 33 to determine the proper relative sequence of the components in the refrigerant lines that connect the condensing unit to an evaporator coil Refer to the Examples of Field Installed Evaporator Piping section on page 35 for more detailed schematics of evaporator piping Liquid Lines Line Sizing Properly sizing the liquid line is critical to a successful split system application The selected tube diameter must provide at least 5 F 2 7 C of subcooling at the expansion valve throughout the operating envelope Increasing the size of the liquid line will not increase the available subcooling Installation Routing Install the liquid line with a slight slope in the direction of flow so that it can be routed with the suction line Minimize tube bends and
72. r Coil with Intertwined Circuiting EI thermal expansion L amaro Z 1n2119 trim solenoid valve 5 For horizontal tubing use the s 11 tube diameter recommended by the condensing unit manufacturer liquid line circuit 2 6 For the vertical riser use the tube diameter recommended by the condensing unit manufacturer Assure the top of the riser is RN higher than the evaporator coil i ll 7 y C liquid line circuit 1 7 Pitch the suction line slightly 1 inch 10 feet 1 cm 3 m so the refrigerant drains toward the evaporator pump down solenoid valve 8 Insulate the suction line 9 The top of the Circuit 1 suction __ riser must be higher than the a 2 distributor bottom evaporator coil Use the trim i p 10 The top of the Circuit 2 suction 11 Only use a trim solenoid valve tube diameter recommended by riser must be higher than the top the condensing unit evaporator coil Use the tube manufacturer for the riser diameter recommended by the condensing unit manufacturer for the riser for constant volume humidity sensitive applications For all other applications install a single solenoid valve the pumpdown solenoid valve between the liquid line filter drier and the sight glass 40 CAH SVX01A EN e TRANE Wiring Wiring to the unit fan motor must be provided by the installer
73. reducers because these items tend to increase pressure drop and to reduce subcooling at the expansion valve Liquid line receivers other than those that are factory installed are not recommended Insulation The liquid line is generally warmer than the surrounding air so it does not require insulation In fact heat loss from the liquid line improves system capacity because it provides additional subcooling s Components Liquid line refrigerant components necessary for a successful job include a filter drier access port solenoid valve moisture indicating sight glass expansion valve s and ball shutoff valves Figure 33 illustrates the Figure 33 Example of placement for split system components discharge line manual angle valves condenser and subcooler coil gt check relief valv condensing unit ceval vve mM compressors ALLI puit manual ball valve access filter IB port ibi e manual ball valve liquid line e coil module 9XPansion e valves e Co e moisture solenoid 8 jio filter drier ha indicating valve access with 5 sight glass ort w ops P access port o S F 2 manual m distributor ball valve access port manual ball valve a 1 Frostat suction line control Kit with sensor 13790452010 SEN 01212 Kit with switch X13100429010 THT 02442 CAH SVX01A EN proper sequence for positioning them in the liquid line Positi
74. rig or ceiling suspend from the top of the unit Lift from lifting lugs only located at the bottom of the unit Use all lifting lugs provided Do not use cables chains or slings except as shown Each of the cables chains or slings used to lift the unit must be capable of supporting the entire weight of the unit Lifting cables chains or slings may not be of the same length Adjust as necessary for even unit lift Do not use a fork lift for handling units This may result in equipment damage Trane is not responsible for equipment damage resulting from improper forklifting practices Test lift unit approximately 24 inches to verify proper center of gravity lift point To avoid dropping of unit reposition lifting point if unit is not level Always place assemble and suspend sections one at a time Failure to follow instructions could result in death or serious injury or equipment damage Figure 2 Recommended attachment to lifting lugs RECOMMENDED ATTACHMENT TO LIFTING LUGS DETAIL A 10 Installation Figure 3 Use proper lifting and rigging methods Per job requirements air handlers will ship as a complete assembly or in sections Trane recommends that the contractor use spreader bars and slings to rig units and subassemblies Before preparing the unit for lifting estimate the approximate center of gravity for lifting safety Because of the placement of internal components the uni
75. t back into service 7 Becareful that any contaminated material does not contact other areas of the unit or building Properly dispose of all contaminated materials and cleaning solution Bearing Set Screw Alignment Align bearing set screws as illustrated in Figure 49 Table 4 on page 47 provides bearing set screw torque measurements CAH SVX01A EN e TRANE See A WARNING Hazardous Voltage with Capacitors on page 49 regarding disconnection of power Fan Bearing Lubrication CAUTION Bearing Failure Do not mix greases with different bases within the bearing Mixing grease within the bearing may result in premature bearing failure The grease used in electric motor bearings is usually not compatible with the grease used in fan bearings Never mix the two grease types Note Lubricate the bearing according to the motor manufacturer s recommendations and use the manufacturer recommended grease Refer to Table 6 for minimum torque of motor mounting and bearings bolts CAH SVX01A EN Routine Maintenance Table 6 Minimum hex head bolt torque in Ib ft Grade 5 bolts Size Thread Minimum inches Designation Torque 1 4 20 UNC 6 1 4 28 UNF 7 65 16 18 UNC 14 5 16 24 UNF 16 3 8 16 UNC 24 3 8 24 UNF 28 7 16 14 UNC 42 7 16 20 UNF 45 1 2 13 UNC 69 1 2 20 UNF 83 9 16 12 UNC 99 9 16 18 UNF 118 5 8 11 UNC 150 5 8 18 UNF 176 3 4 10 UNC 254 3 4 16 UNF 301 7 8 9 UNC 358 7 8 14 UN
76. t weight may be unevenly distributed with more weight in the coil and fan areas Refer to the unit submittals for section weights Test the unit for proper balance and rigging before lifting General Lifting Considerations e Always rig subassemblies or sections as they ship from the factory See the unit submittal drawings for correct placement of sections e Always assemble unit at the installation site Never bolt sections together before rigging e Make the loop of the sling parallel to the direction of airflow if possible e Each of the cables used to lift the unit must be capable of supporting the entire weight of the unit e When hoisting the unit into position use the proper rigging method such as straps slings spreader bars or lifting lugs for protection and safety Note Never lift units in windy conditions CAH SVX01A EN e TRANE e Personnel should be positioned overhead and on the ground to guide the crane or helicopter operator in positioning the sections e The air handler is not designed to be lifted rigged or ceiling suspended from the top of the unit e Never stack the pipe cabinet and inlet hoods on the unit as the unit is being lifted e Do not attach the intake exhaust hoods to the unit prior to lifting the unit Doing so may damage the equipment Attach the hoods to the unit only after all sections are in place CAH SVX01A EN Installation Unit Assembly Note
77. tate the fan wheel to ensure free movement of the shaft bearings and drive Inspect the fan housing for any foreign objects 8 Locate assembly hardware 9 Inspect and test all piping for possible shipping damage Nipples may be installed on coils at the factory but should always be tightened and tested before any connections are made Rough handling during shipping in addition to other factors can cause pipe connections to become loose Note Trane will not be responsible for any leak at the field connections Coils have been factory pressure tested before shipping Resolving Shipping Damage Trane air handlers ship free on board FOB meaning that the unit belongs to the customer the moment the delivery truck leaves the factory If damage has occurred to the unit during shipment follow these instructions Note Trane is not responsible for shipping damage 1 Make specific notation describing the damage on the freight bill Take photos of the damaged material if possible 2 Report all claims of shipping damage to the delivering carrier immediately and coordinate carrier inspection if necessary Note Do not attempt to repair the unit without consulting the delivering carrier 3 Notify your Trane sales representative of the damage and arrange for repair Note Do not attempt to repair the unit without consulting the Trane sales representative 4 Keep the damaged material in the same location as it
78. ter from the coil before the heating season Trane recommends flushing the coil with glycol if coils will be exposed to temperatures below 35 degrees Install field fitted drains and vents to permit winterization of coils not in use and to assist in evacuating air from the water system during startup If draining is questionable because of dirt or scale deposits inside the coil fill the coil with glycol before the heating season begins Note On many unit sizes there are multiple coils in the coil module Be sure to winterize all coils in a given coil module CAUTION Use Approved Glycol Use a glycol approved for use with commercial cooling and heating systems and copper tube coils Failure to do so may result in equipment damage CAUTION Avoid Coil Freezeup Properly drain and vent the coils when they are not in use Trane recommends glycol protection in all possible freezing applications Failure to properly protect coils may result in equipment damage CAH SVX01A EN Routine Maintenance Type W P2 P4 P8 WD 5D and 5W Coils 1 Remove the vent and drain plugs 2 Blow the coil out as completely as possible with compressed air 3 Fill and drain the coil several times with full strength glycol so that it mixes thoroughly with the water retained in the coil 4 Drain the coil out as completely as possible 5 To ensure no water remains in the coil do not replace the vent and drain plugs until the coi
79. terature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Note For additional information regarding the safe discharge of capacitors see PROD SVBOGA EN Turn the adjusting nut 2 or 3 turns only counterclockwise on each isolator in a sequenced manner The equipment weight will compress the spring inside the housing approximately 1 4 inch AM NUT SHIPPING BOLT FAN BASE SHIPPING TIE DOWN BLOCK SHIM ADJUSTING NUT CAH SVX01A EN e TRANE 3 Check that the bushing on the isolator stud is centered in the isolator Adjust to center by moving the stud in the fan base hole 4 This procedure will raise the equipment load until the isolators are all off the shims shipping tie down blocks approximately 1 32 inch the thickness of a credit card and the internal gap is approximately equal to the external gap Note Do not adjust isolators once the fan base is off of the shipping tie down blocks 5 Continue adjusting other isolators in sequence and repeat the same adjustment Continue until all isolators are adjusted 6 Replace the jam nut on each isolator adjusting bolt tighten the nut and remove the shipping tie down block Traq Dampers Traq dampers are low leak dampers that modulate and measure airflo
80. the motor voltage and amperage on all phases to ensure proper operation The readings should fall within the range given on the motor nameplate The maximum allowable voltage imbalance is 2 percent Voltage imbalance is defined as 100 times the sum of the deviation of the three voltages from the average divided by twice the average voltage For example if the three measured voltages are 221 230 and 227 the average voltage would be 226 volts The percent of voltage imbalance is then calculated 100A Voltage imbalance 2xAvgVoltage where A 226 221 230 226 227 226 Voltage imbalance 2 2 not acceptable In the example 2 2 percent imbalance is not acceptable and the power company should be notified to correct it ZA WARNING Live Electrical Components During installation testing servicing and troubleshooting of this product it may be necessary to work with live electrical components Have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury CAH SVX01A EN e TRANE Tension the Fan Belt Check the fan belt tension at least three times during the first days of operation because there is a rapid decrease in tension until the belt settles
81. the next section of the unit Figure 11 Apply butyl tape to shipping splits BUTYL TAPE Installation _ _ _ __ Move the next unit section as close as possible from the previous section The two sections should be close enough to reduce the amount of dragging required This is particularly important when mounting on a roof curb to minimize damage to the sealant on the roof curb Alignment of sections must be completed before drawing sections together Remove the bottom bolts from the shipping split lifting lugs see Figure 12 INSTALL HARDWARE IN EACH HOLE Figure 12 Remove bottom bolts from lifting lugs 4 REMOVE BOTTOM HARDWARE CAH SVX01A EN e TRANE Insert field provided threaded rods through the bottom lifting lug and shipping split plates on each sides of the unit Draw both sides of the section together equally to prevent damage and distortion of the sections as they joined Do not try to join sections by tightening only one side of the rods see Figure 13 Note Field provided threaded hardware should consist of 5 8 11x12 inch threaded rods 5 8 inch lock washers and 5 8 inch nuts Note Failure to compress the butyl tape may result in air and water leakage Once the sections are pulled together add a bead of caulk sikaflex along the seam between the two perimeter caps see Figure 14 Install the assembly hardware as applicable for the shipping split frame inside of unit
82. the splits Secure with the provided Secure with the provided number 10 sheet metal screws number 10 sheet metal screws see Figure 16 Figure 16 Install seam cap over the butyl tape SCREW 10 16 X 750 SHEET METAL SEAM CAP BUTYL TAPE BUTYL TAPE CAH SVX01A EN 21 SCREW 10 16 X 750 SHEET METAL SEAM CAP e TRANE A O TCC outdoor roof sections assembly typical e Join two outdoor roof panels together at the seams at the direction of airflow and secure them in place with 5 16 inch x 3 4 inch bolts and 5 16 lock nuts Cut the proper length of roof joint strip to cover the seam between two outdoor roof panels at the direction of airflow exclude single outdoor roof panel see Figure 17 Figure 17 Join outdoor roof panels at the seams SCREW 10 24 X 56 SELF DRILLER 22 CAH SVX01A EN e TRANE e Join outdoor roof panels two outdoor roof panels overhang at together at the seams in the the side the unit Bend joint strip direction perpendicular to over roof panel and use two number airflow and secure them in place 10 sheet metal screws one in each with 5 16 inch x 3 4 inch bolts roof panel to secure joint strip Trim and 5 16 lock nuts Install the roof the roof joint strip to insure that it joint strip to cover the seam does not protrude more than between two outdoor roof panels 1 16 inch beyond outdoor roof in the perpendicular to airflow overhang see Figure 18 direction of
83. the splits Secure with 410 sheet metal screws 6 Fitthe pre cut hub cap and secure it to the roof with 8 sheet metal screws Fill the end openings with caulk as moisture seal Note Pre drill the screw holes with a number 29 bit FT JOINING STRIP SECURE WITH 10 S M SCREWS KE S SE 1 8 THICK GASKET p T eae 2 1 1 4 X 6 GALVANIZED ANGLE SECURED W 14 S M SCREWS a 12 CENTERS han INDOOR ROOF ASSEMBLY COMPLETE CAH SVX01A EN SPLIT e TRANE TCP Base to Interior Wall Section Assembly Typical N Note Failure to completely compress the gasketing may result in air leakage 1 Join the two units and secure with field provided 5 8 inch flat washers and 5 8 inch X 2 1 2 inch grade 9 bolts though each of the six holes Figure 8 TCP base to interior wall sections 16 Installation A ee Apply caulk the length of the base between the 2 inch X 2 inch angle on the one base section and the wall on the adjoining section See Illustration below Note Use a polyurethane or equivalent caulk Secure the 2 inch X 2 inch angle to the adjoining wall with number 14 sheet metal crews on 12 inch centers along the length of the angle and wall 4 X 1 4 GASKET INTERIOR WALL b SECURE 2 X 2 ANGLE TO WALL Wild S M SCREWS 12 CTR S _ CAULK T r er SPLIT 7 SPLIT INTERIOR CAULK CAULK SPLIT S
84. the walls and the roof as demonstrated in the following assembly sections ROD THREADED 62 11X13 38 THD CAH SVX01A EN Installation Figure 14 Add caulk along the seam Figure 13 Insert field provided threaded rods CAULK NUT 62 11 19 e TRANE A O TCC internal shipping split frame assembly typical e Join the two sections and secure with field provided V 13x8 5 inch threaded rods V inch flat washers and Y inch lock washers through each of the holes provided in the internal shipping split frame see Figure 15 This frame runs around the entire perimeter of the unit see Figure 11 Figure 15 Join internal shipping split frame WASHER 563 ID X 1 375 OD LOCKWASHER 500 NUT 500 13 HEX MACH NASHER 563 ID X 1 375 OD LOCKWASHER 500 NUT 500 13 HEX MACH ROD 5 13X8 500 L STL 20 CAH SVX01A EN e TRANE TCC wall sections TCC indoor roof sections assembly typical assembly typical e Verify external unit squareness e Verify external unit squareness e Apply the 1 25 inch x 0 33 inch e Apply the 1 25 inch x 0 33 inch ribbed butyl tape to the exterior ribbed butyl tape to the exterior of the walls covering the seam of of the roofs covering the seam of the two adjoining sections see the two adjoining sections see method sheet method sheet e Install seam cap over the butyl e Install seam cap over the butyl uniformly straddling the splits uniformly straddling
85. to 15 minutes e Rotates inlet guide vanes full open to full close Air movement discourages water condensation and hastens re evaporation of any condensate that does happen to form This simple preventative measure effectively combats microbial growth and curbs moisture related deterioration of air handling components 53 e TRANE See A WARNING Hazardous Voltage with Capacitors on page 49 regarding disconnection of power ZA WARNING Hazardous Chemicals Coil cleaning agents can be either acidic or highly alkaline Handle chemical carefully Proper handling should include goggles or face shield chemical resistant gloves boots apron or suit as required For personal safety refer to the cleaning agent manufacturer s Materials Safety Data Sheet and follow all recommended safe handling practices Failure to follow all safety instructions could result in death or serious injury Internal Insulation The process of cooling and dehumidification produces condensate that must be continuously removed from the air handling unit The section of the unit from the entering air side of the cooling coil to the leaving edge of the drain pan is considered to be the wet section of the unit Other potentially wet sections are immediately downstream of a humidifier and or an outside air intake section Internal insulation in areas of the unit that are normally considered to be dry must also be period
86. toring components provided by Trane or others refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors Verify with an appropriate voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Note For additional information regarding the safe discharge of capacitors see PROD SVBOGA EN Throwaway Filters To replace throwaway filters install new filters with the directional arrows pointing in the direction of airflow Note Bag and cartridge filters must have an airtight seal to prevent air bypass If using other than Trane supplied filters apply foam gasketing to the vertical edges of the filter CAH SVX01A EN Routine Maintenance Permanent Filters To clean permanent filters 1 Disconnect all electrical power to the unit 2 Wash the filter under a stream of water to remove dirt and lint 3 Remove oil from the filter with a wash of mild alkali solution 4 Rinse the filter in clean hot water and allow to dry 5 Coat both sides of the filter by immersing or spraying it with Air Maze Filter Lote W or an equivalent 6 Allow to drain and dry for about 12 hours 7 Reinstall the filter Note It may be preferable to keep extra clean filters to replace the dirty filters to minimize unit downtime for filter maintenance Front Load Filters Most filters
87. ust be higher than the top evaporator coil Use the tube diameter recommended by the condensing unit manufacturer for the riser 39 e TRANE Installation uu E 5 SEECO EECIAL LEE ULLLL LLIIS LLLS LLL LI Dual Circuit Condensing Units Evaporator Coil with Eight Figure 40 Dual circuit evaporator coil with eight distributors Distributors see Figure 40 suction line Evaporator Coil 78 thermal expansion with Horizontal Split 1 Pitch the liquid line slightly d II valves TXV Standard Circuiting 1 inch 10 feet 1 cm 3 m so the SN 3 AAA S liquid line refrigerant drains toward the circuit 2 evaporator 3 A CA circuit 2 2 Provide one expansion valve per distributor 3 JA suction line 3 Slightly pitch the outlet line from 78 3 E the suction header toward the a D suction riser that is 1 inch AA X liquid line 10 feet 1 cm 3 m in the direction circuit 1 of flow Use the tube diameter that matches the suction header connection trim circuit 1 l o pump down y solenoid valve 4 Arrange the suction line so the 3 2M refrigerant gas leaving the coil 4 distributar flows downward past the lowest suction header outlet before turning upward Use a double 7 8 elbow configuration to isolate the TXV bulb from other suction headers suction lines Evaporato
88. voltmeter that all capacitors have discharged Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury Note For additional information regarding the safe discharge of capacitors see PROD SVBOGA EN Pre Startup Checklist Fan Related Checks e Ifthe unit is internally isolated ensure that the fan isolator tie down bolts have been removed e Rotate all fan wheels manually to confirm they turn freely in the proper direction CAH SVX01A EN Startup e Check fan shaft bearings fan wheel and drive sheave set screws for proper torque settings Fan sheaves should be tight and aligned Bearing set screws should be torqued e Inspect the inlet vane assembly for freedom of movement If resistance is above the recommended torques check the assembly for any binding or misalignment Do not force the vanes e Check fan drive belt tension e Inspect fan motor and bearings for proper lubrication if necessary e Check the motor lubrication if necessary Remove and clean grease plugs Check for moisture in the grease If moisture is present remove the motor and send it to an authorized repair shop for bearing inspection replacement If no moisture is present refer to the motor manufacturer s lubrication recommendations for proper lubrication e Check the motor lubrication if necessary Remove and clean grease plugs
89. w Each Traq damper module is supplied with a factory mounted ventilation control module VCM on the interior of the mixing box module The VCM has an input terminal for power and an output terminal for air velocity see Figure 20 Installation The actuators factory mounted or field supplied are separately wired and controlled by a direct digital controller or other building logic VCM Transducer Calibration The VCM has an auto zero function that recalibrates the transducer once every minute Input Power Signal The only input signal the VCM needs is the 24 Vac power connected to terminals 1TB1 5 and 1TB1 6 Output Velocity Signal The 2 to 10 VDC linear output signal from the VCM represents air velocity This voltage can be converted to represent airflow cfm or L s using the formula below Table 1 and data in your submittal package Airflow k cfm E 10V ELS OR Airflow k L s 10V pes 2 Altitude can be adjusted for by using the following factors Table 1 Altitude adjustment factors Sea level 1 0 Elevation feet k 1000 0 982 2000 0 964 3000 0 949 4000 0 930 5000 0 914 6000 0 897 7000 0 876 8000 0 860 9000 0 846 10 000 0 825 Figure 20 Traq damper terminal connections Velocity 2 10 Vdc 4 1TB1 3 GND lt 1TB1 4 24 Vac gt 1TB1 5 GND gt gt 1TB1 6 CAH SVX01A EN Ventilation Control Module Control Dampers If th
90. y year and vinyl chlorinated lacquer bushings Clean damper operators Inspect electrical components and insulation Inspect wiring for damage Rotate the fan wheel and check for obstructions in the fan housing The wheel should not rub on the fan housing Inspect the unit casing for corrosion If damage is found clean and repaint the surface with a rust resistant primer Clean the fan wheels and fan shaft See the Fans section on page 50 for more information Inspect and clean drain pans Check damper linkages set screws and blade adjustment Clean but do not lubricate the nylon damper rod Adjust the center if necessary and tighten wheel set screws to the proper torque Lubrication section on page 51 for more information 48 Lubricate motor bearings in accordance with motor manufacturer s recommendations see the Fan Bearing Check condition of gasketing and insulation around unit door and dampers Examine flex connections for cracks or leaks Repair or replace damaged material CAH SVX01A EN e TRANE Air Filters Refer to product catalog CLCH PRCOO3 EN for filter sizes types and quantities ZA WARNING Hazardous Voltage with Capacitors Disconnect all electric power including remote disconnects and discharge all motor start run capacitors before servicing Follow proper lockout tagout procedures to ensure the power cannot be inadvertently energized For variable frequency drives or other energy s

Trane CAH-SVX01A-EN User's Manual

Contents

Download Pdf Manuals

Related Search

Related Contents