Trane Custom Climate Changer Air Handlers Single-circuit evaporator coil with four distributors

Page 37

Installation

Figure 37. Single-circuit evaporator coil with four distributors

Assure the top of the riser is higher than the evaporator coil.

7Pitch the suction line slightly—

1 inch/10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator.

8Insulate the suction line.

9Only 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.

Single-Circuit Condensing Units: Evaporator Coil with Four Distributors (see Figure 37)

1Pitch the liquid line slightly—

1 inch/10 feet [1 cm/3 m]—so the refrigerant drains toward the evaporator.

2Provide one expansion valve per distributor.

3Slightly 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.

CAH-SVX01A-EN

4Arrange 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.

5For horizontal tubing, use the tube diameter recommended by the condensing unit manufacturer.

6For the vertical riser, use the tube diameter recommended by the condensing unit manufacturer.

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Contents July Custom Climate Changer Air HandlersCAH-SVX01A-EN Protecting Environment Unit DescriptionContents Operating Environment Wiring Sizes ConnectionsControls Factory-Mounted ControlsUltraviolet UV Germicidal Irradiation Lights optional Resolving Shipping Damage Receiving ChecklistJob Site Storage Recommendations Use Canvas OnlyPreparing the Unit Site Pre-Installation Requirements General StorageLong-Term Storage Outdoor Storage ConsiderationsTypical Curb Installation Checklist Roof Curb InstallationGeneral Lifting Considerations Lifting and RiggingAssembly Hardware Unit AssemblyJoining Sections Edge-to- Edge TCP Model Assembly InstructionsTCP base assembly TCP Base Section Assembly TypicalTCP Outdoor Roof Section Assembly Typical Installation TCP Wall Section Assembly TypicalInstallation TCP Indoor Roof Section Assembly Typical Indoor Roof Assembly CompleteBase to Wall Assembly Complete Joining sections Edge to Edge TCC Model Assembly InstructionsApply butyl tape to shipping splits Add caulk along the seam Join internal shipping split frame Installation TCC indoor roof sections assembly typical TCC wall sections assembly typicalJoin outdoor roof panels at the seams Installation TCC outdoor roof sections assembly typicalTrim roof joint strip Isolator Adjustment Component Installation RequirementsDuct Connections FansControl Dampers Traq DampersMagnahelic Air Filter Gage Front Load Filters Installation Air FiltersBag or Cartridge Filters Outdoor Unit Weather HoodsCoil Piping Connections Use a Backup WrenchGeneral Recommendations Prevent Coil DamageWater Damage Installation Drain Pan TrappingCoil Damage Installation Steam Coil PipingInstallation Typical piping for type 5W one-row water coil Water Coil PipingLiquid Lines Installation Refrigerant Coil PipingType F refrigerant coil with packed elbow Valve DamageSingle-circuit evaporator coil with one distributor Examples of Field-Installed Evaporator PipingSingle-circuit evaporator coil with two distributors Single-circuit evaporator coil with four distributors Dual-circuit evaporator coil with two distributors Dual-circuit evaporator coil with four distributors Dual-circuit evaporator coil with eight distributors Hazardous Voltage with WiringUse Copper Conductors Only CapacitorsExternal Insulating Requirements Junction box mounting and wiring detailsFan-Related Checks Pre-Startup ChecklistCoil-Related Checks Proper Water Treatment Motor-Related ChecksGeneral Checks Unit OperationCalculate Motor Voltage Imbalance Tension Belts Correctly Startup Tension the Fan BeltStartup Sheave Alignment Determine Fan SpeedMultibelt Check Routine Maintenance Throwaway Filters Air FiltersPermanent Filters Front Load FiltersDrain Pans Inspecting and Cleaning FansFans Bearing Set Screw AlignmentFan Motor Inspection Fan Bearing LubricationSteam and Water Coils CoilsType K Cooling Coils Refrigerant CoilsMoisture Purge Cycle Internal Insulation Ultraviolet UV Germicidal Irradiation Lights Replacement of ultraviolet bulbsTroubleshooting Alignment section on CAH-SVX01A-EN CAH-SVX01A-EN Trane