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Installation
Operation
Maintenance
Split System Cooling or
Heat Pump Air Handler
7½ - 20 Tons
Model TWE
Models (60 Hz) Models (50 Hz)
TWE060A***E TWE050AD**E
TWE060B***E TWE075AD**E
TWE090A***E TWE100AD**E
TWE090B***E TWE100BD**E
TWE120A***F TWE155BD**E
TWE120B***E TWE200BD**F
TWE180B***E
TWE240B***F
October 2006 TWE-SVX03C-EN
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Preface and Warnings and Cautions Literature Change History Warnings and Cautions TWE-SVX03A-EN (June 2003) Notice that warnings and cautions Implemented Global Graphics format appear at appropriate intervals to IOM. throughout this manual. Warnings TWE-SVX03B-EN (April 2005) are provided to alert installing Added capacitor discharge warning. contractors to potential hazards that could result in personal injury or TWE-SVX03C-EN (September 2006) death, while cautions are designed to Mo
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Contents Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Unit Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Inspection
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Model Number Description TWE 090 A 1 00 E A 123 456 7 8 9 10 11 12 DIGITS 1-3: PRODUCT TYPE DIGIT 8: ELECTRICAL Model Number Description CHARACTERISTICS TWE = Split System Heat Pump/ All products are identified by a Cooling Air Handler 1 = 208-230/60/1 multiple-character model number that precisely identifies a particular 3 = 208-230/60/3 DIGITS 4-6: NOMINAL GROSS type of unit. An explanation of the 4 = 460/60/3 COOLING CAPACITY (MBh) alphanumeric identification code is W = 575/60/3 060 =
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General Information Installation procedures should be General Unit Inspection performed in the sequence that they This manual covers installation of Inspect material carefully for any appear in this manual. Do not the TWE050, 060, 075, 090,100 and shipping damage. If damaged, it destroy or remove the manual from 120A single circuit air handlers and must be reported to, and claims the unit. TWE060, 075, 090, 100, 120, 155, 180, made against the transportation 200 and 240B dual circuit
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Unit Dimensions Unit Dimensions Figure 1. 6 TWE-SVX03C-EN
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Unit Dimensions Figure 1. (continued from previous page) TWE-SVX03C-EN 7
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Unit Dimensions Figure 2. 8 TWE-SVX03C-EN
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Unit Dimensions Figure 3. TWE-SVX03C-EN 9
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Installation Installation Preparations Process for Drain Pan Relocation The final position for the air handler 1. Remove the access plate at the must be dictated by required service opposite end of the drain access to it, weight distribution over connection. This plate secures structural supports, and by the and lifts the back end of the locations of electrical, refrigerant drain pan for sloping. It must be and condensate drainage removed before the drain pan connections. After this is can
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Installation The crated unit can be moved using a Refrigerant Piping Preparation Caution forklift of suitable capacity. For lifting System Component Damage! The air handler is designed so that the unit into an elevated mounting Properly insulate all refrigerant gas refrigerant piping can enter from position, run lifting straps or slings piping to prevent possible water either the right or left hand side. It is under the unit and attach securely to damage due to condensation and to sh
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Installation be installed, but should not be contains two (2) brass clamps Caution connected to the primary drain line (straps) and cork impregnated Equipment Damage! from the unit. Isolate the auxiliary insulation material approximately 9" Before hanging the unit on drain pan from both the air handler long by 4" wide. This is for attaching suspension rods, reinforce the and the structure. and insulating the expansion valve cabinet around the knockouts by bulb(s) to the suction line(s).
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Installation Note: Important! When air handler filter track to increase the width of the WARNING is installed in the vertical filter opening. Hazardous Voltage position and close proximity w/Capacitors! trapping of condensate is Duct Connections Disconnect all electric power, required, use of a subbase The supply and return ducts should including remote disconnects and accessory to raise the air be connected to the unit with flame discharge all motor start/run handler for clearance o
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Installation � Inspect duct outlets. Outlets WARNING must be open and unrestricted. Hazardous Voltage! � Inspect unit drain lines. Pipe Disconnect all electric power, connections must be tight and including remote disconnects before drain line unrestricted. servicing. Follow proper lockout/ � Inspect fan assembly to insure all tagout procedures to ensure the moving parts move freely. power can not be inadvertently energized. Failure to disconnect � If unit is horizontally mounted, po
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Field Wiring Thermostat and Control Connections 1. Observe all notes on the diagrams. 2. Mount the thermostat in the desired location. 3. Install color coded low voltage cables between outdoor unit, indoor unit and thermostat. 4. Connect low voltage control wiring to the low voltage terminal board located on the side of the fan control box per the typical interconnecting wiring diagrams on pages 13 through 22. TTA090A/TWE090A TTA120A/TWE120A Field Wiring: a. 3 power wires. Line volt
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Field Wiring b. 3 power wires. Line voltage (2) TW_030/TWE060B for 3 phase; 2 wires for single (2) TW_060/TWE120B phase. Field Wiring: c. Heat pump thermostat: 6 a. 3 power wires. Line voltage wires, 24 volts. for 3 phase; 2 wires for single i. Electric heat: add 2 phase. additional wire, 24 volts. b. 3 power wires. Line voltage d. 2 wires, 24 volts. for 3 phase; 2 wires for single i. Outdoor thermostat; add phase. 1 additional wire, 24 volts. c. Heat pump thermostat: 7 ii. Electric
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Field Wiring Figure 11. TTA090A, 120A/TWE090A, 120A; TTA075A, 100A/TWE075A, 100A Figure 12. TTA120B/TWE120B; TTA120C/TWE120A; TTA100B/TWE100B; TTA100C/TWE100A TWE-SVX03C-EN 17
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Field Wiring Figure 13. TWA090A, 120A/TWE090A, 120A; TWA075A, 100A/TWE075A, 100A Figure 14. TTA120B/TWE120B; TTA120C/TWE120A; TTA100B/TWE100B; TTA100C/TWE100A 18 TWE-SVX03C-EN
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Field Wiring Figure 15. TTA090A, 120A/TWE090A, 120A; TTA075A, 100A/TWE075A, 100A Figure 16. TW_060/TWE060; TW_050/TWE050 TWE-SVX03C-EN 19
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Field Wiring Figure 17. TW_060/TWE060; TW_050/TWE050 Figure 18. TW_060/TWE060; TW_050/TWE050 20 TWE-SVX03C-EN
