Trane CAH-SVX01A-EN - Manual

CAH-SVX01A-EN 5 GeneralInformation 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 -40ºF to 140ºF (-40ºC to 60ºC). For heating applica...

General Information 6 CAH-SVX01A-EN 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 problems in sensitive individuals (1) . If specified, Trane provi...

CAH-SVX01A-EN 7 Pre-Installation Requirements 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 inspe...

Pre-Installation Requirements 8 CAH-SVX01A-EN General Storage The unit controller and all other electrical/electronic components should be stored in conditions of -20ºF to 120 ° F and 5 to 95 percent relative humidity, non-condensing. Electrical components are not moisture-tolerant. Factory protecti...

Pre-Installation Requirements CAH-SVX01A-EN 9 Figure 1. Cross section of typical curb installation on new construction Roof Curb Installation 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. Proper...

10 CAH-SVX01A-EN Installation Lifting and Rigging  WARNING Lifting and Rigging! Do not lift, 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...

Installation CAH-SVX01A-EN 11 • Personnel should be positioned overhead and on the ground to guide the crane or helicopter operator in positioning the sections. • The air handler is not designed to be lifted, rigged or ceiling suspended from the top of the unit. • Never stack the pipe cabinet and in...

Installation 14 CAH-SVX01A-EN 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. 2 Apply the 1/8-inch gasket evenly to the exterior of the walls across the two joined edges of the sp...

Installation CAH-SVX01A-EN 15 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 t...

Installation 16 CAH-SVX01A-EN TCP Base to Interior Wall 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 ho...

Installation CAH-SVX01A-EN 21 TCC wall sections assembly (typical) • Verify external unit squareness. • Apply the 1.25-inch x 0.33-inch ribbed butyl tape to the exterior of the walls covering the seam of the two adjoining sections (see method sheet). • Install seam cap over the butyl, uniformly stra...

Installation 24 CAH-SVX01A-EN 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 ...

Installation CAH-SVX01A-EN 25 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-in...

Installation 26 CAH-SVX01A-EN 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 Re...

Installation CAH-SVX01A-EN 27 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 them into the app...

Installation 28 CAH-SVX01A-EN 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. • Provide swing joints or flexible fittin...

Installation CAH-SVX01A-EN 33 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...

Installation 34 CAH-SVX01A-EN • Thermal expansion valve. The expansion valve is the throttling device that meters the refrigerant into the evaporator coil. Metering too much refrigerant floods the compressor; metering too little elevates the compressor temperature. Choosing the correct size and type...

Installation CAH-SVX01A-EN 35 • 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 ...

Installation 38 CAH-SVX01A-EN 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 the refrigerant drains toward the evaporator. 2 Provide one expansion valve per distributor. 3 Slightly pitch the outlet l...

Installation CAH-SVX01A-EN 41 Wiring Wiring to the unit fan motor must be provided by the installer 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 ...

Installation 42 CAH-SVX01A-EN Figure 44. Junction box mounting and wiring details Figure 45. Typical quick connects with wiring identification Valve jack wiring:.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 (...

CAH-SVX01A-EN 43 Startup 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.  WARNING Hazardous Voltage with Capacitors! Disconnect all ...

Startup 44 CAH-SVX01A-EN General Checks • Ensure the unit has been installed level. • Ensure supply-air and return-air ducts have been connected. • Ensure damper operator motors and connecting linkage have been installed. • Verify damper operation and linkage alignment. • Check that air filters are ...

Startup CAH-SVX01A-EN 47 Determine Fan Speed  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 ha...

Routine Maintenance CAH-SVX01A-EN 49 Air Filters Refer to product catalog CLCH-PRC003-EN for filter sizes, types, and quantities.  WARNING Hazardous Voltage with Capacitors! Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Fo...

Routine Maintenance 50 CAH-SVX01A-EN See “  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 mo...

Routine Maintenance CAH-SVX01A-EN 51 See “  WARNING Hazardous Voltage with Capacitors!” on page 49 regarding disconnection of power. Fan Bearing Lubrication CAUTIONBearing Failure! Do not mix greases with different bases within the bearing. Mixing grease within the bearing may result in premature b...

Routine Maintenance 52 CAH-SVX01A-EN See “  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 u...

Routine Maintenance CAH-SVX01A-EN 53 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 al...

Routine Maintenance 54 CAH-SVX01A-EN See “  WARNING Hazardous Voltage with Capacitors!” on page 49 regarding disconnection of power.  WARNING Hazardous Chemicals! Coil cleaning agents can be either acidic or highly alkaline. Handle chemical carefully. Proper handling should include goggles or face...

Routine Maintenance CAH-SVX01A-EN 55 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 op...

56 CAH-SVX01A-EN Troubleshooting This section is intended to be used as a diagnostic aid only. For detailed repair procedures, contact your local Trane service representative. Table 8. Air handler troubleshooting recommendationsSymptom Probable Cause Recommended Action Bearing is excessively hot Fir...