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TTA-SVX02C-EN

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C. Recommended line sizes:
    TTA075, 085, 090, 100 & 120A (single circuit)
    TTA155B, 180, 200, 240B (dual circuit) and  TTA100 &
    120C (two speed)

Suction line - 1 3/8 inch sealed type L refrigerant tubing.
Liquid line - 1/2  inch sealed type L refrigerant tubing.

D. Recommended line sizes:
    TTA100, TTA120B, TTA125B, TTA150B (dual circuit)

Suction line - 1 1/8  inch sealed type L refrigerant tubing.
Liquid line - 3/8  inch sealed type L refrigerant tubing.

E. Recommended line sizes:
    TTA155 and 180C (two speed)

Suction line - 1 5/8 inch sealed type L refrigerant tubing.
Liquid line - 5/8 inch sealed type L refrigerant tubing.

Note: 

Insulate all refrigerant piping and connections.

Refrigerant Piping Procedures (Outdoor Units)

Each TTA unit ships with a holding charge of dry nitrogen.
The nitrogen should be removed and the entire system
evacuated (at the proper time) to avoid possible
contamination.

1. Remove the compressor service access panel.

2. Locate the liquid and suction line service valves. Check

that the piping connection stubs on the valves (Figure 9)
line up properly with the holes in the unit cabinet.

Figure 9

3. Remove the refrigerant connection seal caps and open the

service valve slowly to release the nitrogen from the unit.

CAUTION: 

Do not remove the seal caps from refrigerant

connections until prepared to braze refrigerant lines to the
connections. Excessive exposure to atmosphere may
allow moisture or dirt to contaminate the system,
damaging valve seals and causing ice formation in
system components.

4. Cut, fit and braze tubing, starting at the outdoor unit and

work toward the indoor unit.

Note: Use long radius ells for all 90 degree bends.

All brazing should be done using a 2 to 8 psig dry nitrogen
purge flowing through the pipe being brazed (Figure 9 ).

CAUTION:

 Install a regulating valve between the nitrogen

source and the gauge manifold (Figure 9). Unregulated
pressure can damage system components.

CAUTION: 

Wet-wrap all valves and protect painted

surfaces from excessive heat. Heat can damage system
components and the unit finish.

5. Shut off nitrogen supply.

6. Shut off the manifold valve for the line that is connected to

the suction line service valve. Disconnect the line from the
gauge port on the valve.

Figure 10

Refrigerant Piping Procedure (Indoor Unit)

Once liquid and suction lines are complete to the refrigerant
connections on the indoor unit, puncture the seal caps on the
indoor unit connection stubs to release the dry nitrogen
charge.

Installation

Содержание TTA075AD series

Страница 1: ...ensers 7 1 2 20 Tons September 2004 Models 60 Hz TTA090A F TTA120A F TTA120B E TTA120C G TTA150B E TTA180B F TTA180C G TTA240B F TTA SVX02C EN 18 AC60D8 1 50 Hz TTA075AD F TTA085AD F TTA100AD F TTA100...

Страница 2: ...at the end of this manual Should equipment failure occur contact a qualified service organization with qualified experienced HVAC technicians to properly diagnose and repair this equipment NOTICE War...

Страница 3: ...ing Procedure 14 Electrical Wiring 15 Low Voltage Wiring Electromechanical 16 Low Voltage Wiring ReliaTel 17 ReliaTel thermostat zone sensor and night setback wiring 18 Typical Split System Cooling Di...

Страница 4: ...nsing Unit Model Nomenclature T T A 0 9 0 A 3 0 0 B A 1 2 3 4 5 6 7 8 9 10 11 12 Digits 1 2 3 Product Type Digit 8 Electrical Characteristics TTA Split System Cooling 3 208 230 60 3 4 460 60 3 Digits...

Страница 5: ...2C EN 5 Figure 1 TTA075A TTA090A Dimensional Data Connection Location Clearances Corner Weights Figure 2 TTA085A TTA100A TTA120A Dimensional Data Connection Location Clearances Corner Weights Unit Dim...

Страница 6: ...EN Figure 3 TTA100B TTA120B TTA125B TTA150B Dimensional Data Connection Location Clearances Corner Weights Figure 4 TTA100C TTA120C Dimensional Data Connection Location Clearances Corner Weights Unit...

Страница 7: ...TTA SVX02C EN 7 Figure 5 TTA155B TTA180B Dimensional Data Connection Location Clearances Corner Weights Unit Dimensions...

Страница 8: ...8 TTA SVX02C EN Figure 6 TTA155C TTA180C Dimensional Data Connection Location Clearances Corner Weights Unit Dimensions...

Страница 9: ...TTA SVX02C EN 9 Figure 7 TTA200B TTA240B Dimensional Data Connection Location Clearances Corner Weights Unit Dimensions...

Страница 10: ...22 0 156 0 1 1 6 0 17 0 TTA150B4 460 60 3 414 506 25 2 35 2 10 0 70 0 1 1 2 7 7 0 TTA150BK 380 60 3 342 418 27 5 35 2 10 7 70 0 1 1 3 4 7 8 TTA150BW 575 60 3 518 632 20 5 25 2 8 2 54 0 1 1 2 0 5 7 TT...

Страница 11: ...cealed damage is discovered stop unpacking the shipment Do not remove damaged material from the receiving location Take photos of the damage if possible The owner must provide reason able evidence tha...

Страница 12: ...h State of California law Proposition 65 This product contains fiberglass wool insulation Fiberglass dust and ceramic fibers are believed by the state of California to cause cancer through inhalation...

Страница 13: ...n seal caps and open the service valve slowly to release the nitrogen from the unit CAUTION Do not remove the seal caps from refrigerant connections until prepared to braze refrigerant lines to the co...

Страница 14: ...pump and observe the micron gauge If gauge pressure rises above 500 microns in one 1 minute then evacuation is incomplete or the system has a leak 6 If vacuum gauge does not rise above 500 microns in...

Страница 15: ...L IS REMOVED AND POWER IS APPLIED TO THE UNIT FAILURE TO OBSERVE ALL SAFETY PRECAUTIONS COULD RESULT IN SEVERE PERSONAL INJURY OR DEATH 2 Turn on power to the unit Allow the system to run for five to...

Страница 16: ...4 VOLTS 2 WIRES FOR SINGLE PHASE ONE STAGE ELECTRIC HEAT ADD 1 ADDITIONAL WIRE 24 VOLTS C COOLING ONLY THERMOSTAT 4 WIRES 24 VOLTS TWO STAGE ELECTRIC HEAT ADD 2 ADDITIONAL WIRES 24 VOLTS ONE STAGE ELE...

Страница 17: ...TTA120A TWE240B B 3 POWER WIRES LINE VOLTAGE FOR 3 PHASE FIELD WIRING 2 WIRES FOR SINGLE PHASE A 3 POWER WIRES LINE VOLTAGE C COOLING ONLY THERMOSTAT 4 WIRES 24 VOLTS B 3 POWER WIRES LINE VOLTAGE FOR...

Страница 18: ...18 TTA SVX02C EN Figure 8 Night Setback Panel Field Wiring Figure 9 Zone Sensor Field Wiring Figure 10 Thermostat Field Wiring Installation...

Страница 19: ...TTA SVX02C EN 19 Installation Figure 11 Typical Split System Cooling...

Страница 20: ...pressor will cycle back on Internal Overload Protector IOL This device is a current thermal actuated warp switch imbedded in the compressor motor windings It will shut off the compressor if the temper...

Страница 21: ...Indoor Supply Air TheevaporatorfaniscontrolledbyanON AUTOswitchon theroomthermostat WiththeswitchpositionedatAUTOand thesystemoperatinginthecoolingmode fanoperation coincideswiththecoolingruncycles If...

Страница 22: ...control algorithmscallingforadditionalcooling For Thermostat Control Whentheroomthermostatsystemswitchispositionedat COOL andthefanswitchisat AUTO theRTRMenergizes the compressor relay coil located on...

Страница 23: ...esistance Test Mode This method can be used for start up providing a decade box for variable resistance outputs is available This method initiates the different components of the unit one at a time wh...

Страница 24: ...hat mode for up to one hour while trouble shooting Refer to the sequence of operations for each mode to assist in verifying proper operation Make the necessary repairs and proceed to Steps 7 and 8 7 I...

Страница 25: ...n switch at the zone sensor to the OFF position After approxi mately 30 seconds turn the MODE selection switch to the desired mode i e HEAT COOL or AUTO Method 2 To reset the system at the unit cycle...

Страница 26: ...nsor Test Testing serial communication voltage 1 Verify 24 VAC is present between terminals J6 14 J6 11 2 Disconnect wires from J6 11 and J6 12 Measure the volt age between J6 11 and J6 12 should be a...

Страница 27: ...t from the unit casing 4 Remove corrosion from any surface and repaint Check the gasket around the control panel door to insure it fits cor rectly and is in good condition to prevent water leakage 5 I...

Страница 28: ...porator Temp Entering Air Compressor Superheat Subcooling F Dry Wet Suction Discharge Circuit 1 Circuit 1 Bulb Bulb Pressure Pressure F F Perform each inspection once per month during cooling season w...

Страница 29: ...toflostrefrigerant No liabilityshallattachtoWarrantoruntilproductshavebeenpaidforandthenliability shallbelimitedsolelytothepurchasepriceoftheequipmentunderwarrantyshown tobedefective THE WARRANTY AND...

Страница 30: ...roductsnotconformingtothiswarranty Warrantorshallnotbeobligatedtopayforthecostoflostrefrigerant Noliability whatevershallattachtoWarrantoruntilsaidproductshavebeenpaidforandthen saidliabilityshallbeli...

Страница 31: ...31...

Страница 32: ...ous product and product data improvement and reserves the right to change design and specifications without notice Literature Order Number File Number Supersedes Stocking Location TTA SVX02C EN Webb M...

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