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SS-APG008H-EN

Parts

Table 2.

Component selection for TTA cooling microchannel units 6–25 tons

Unit

TTA0724*A

TTA0724*D

TTA0904*A

TTA0904*D

TTA1204*D

TTA1204*C

TTA1504*D

Refrigerant ckts

1 (Manifold)

Minimum step (tons)

6.7

8.4

GAS LINE

Tube diameter (in.)

Horizontal (& drops)

1 1/8

3/4

1 1/8

7/8

1 1/8

1 3/8

1 1/8

Vertical (up)

1 1/8

3/4

1 1/8

7/8

1 1/8

Access port 3/ckt

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

LIQUID LINE

Tube diameter (in.)

1/2

3/8

1/2

3/8

1/2

Filter drier

DHY01123

DHY01122

DHY01123

DHY01122

DHY01123

Sight glass 1/ckt

GLS00853

GLS00852

GLS00853

GLS00852

GLS00853

Access port 2/ckt

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Additional oil charge

0 oz

1 oz/50 ft

0.4 oz/50 ft

Unit

TTA1804*D

TTA1804*C

TTA2404*D

TTA2404*C

TTA3004*C

Refrigerant ckts

1 (Manifold)

Minimum step (tons)

7.5

8.6

13.4

12.5

GAS LINE

Tube diameter (in.)

Horizontal (& drops)

1 1/8

1 5/8

1 3/8

1 5/8

2 1/8

Vertical (up)

1 1/8

1 3/8

1 5/8

Access port 3/ckt

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

LIQUID LINE

Tube diameter (in.)

1/2

5/8

1/2

3/4

Filter drier

DHY01123

DHY01232

DHY01123

DHY01233

(a)

DHY01233

(a)

Sight glass 1/ckt

GLS00853

GLS00830

GLS00853

GLS00830

(b)

GLS00830

(b)

Access port 2/ckt

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Schraeder valve

w/core

Additional oil charge

0 oz

=3oz+1oz/30ft

0 oz

= 8 oz+1oz/30 ft

Notes:

On Access ports 2/ or 3/ckt: Valve body VAL01483, valve core COR00006, valve cap CAP00072Schraeder

On Filter drier: For units with line lengths in excess of 80 ft, the unit included filter must be removed and discarded,

and a filter from the table must be installed close to the air handler. See “Liquid Filter Drier."

Check valve selections: 3/8 - VAL08459, 1/2 - VAL08460, 5/8 - VAL01722, 7/8 - VAL07030. (See “Check Valves").

(a)

7/8" connections

(b)

5/8" connections

Содержание Odyssey TTA0724 A Series

Страница 1: ...person could result in death or serious injury When working on the equipment observe all precautions in the literature and on the tags stickers and labels that are attached to the equipment June 2022...

Страница 2: ...that is used in these service procedures In addition some states or municipalities may have additional requirements that must also be adhered to for responsible management of refrigerants Know the app...

Страница 3: ...itutes or refrigerant additives WARNING Explosion Hazard Failure to follow instructions below could result in an explosion which could result in death or serious injury and equipment damage NEVER bypa...

Страница 4: ...g Routing and Component Selection 9 Liquid Lines 9 Line Sizing 9 Routing 9 Insulation 9 Components 9 Gas Line 10 Line Sizing 10 Routing 10 Insulation 11 Components 11 Expansion Valves 12 Controls 13 H...

Страница 5: ...r the evaporator inlet Operational problems can occur if these refrigerant lines are designed or installed improperly Figure 1 Interconnecting refrigerant lines in a typical split air conditioning sys...

Страница 6: ...equation based formulas to predict the entrainment velocities of R 410A refrigerant and POE oil These minimum velocities are reflected in the line sizes listed in the component selection summary table...

Страница 7: ...contact the manufacturer for review Figure 3 Allowable elevation difference TWA above indoor unit Not allowed for TWA units Note Regardless of orientation hot gas bypass HGBP lines are limited to 75...

Страница 8: ...nits Note Route refrigerant piping for minimum linear length minimum number of bends and fittings Important Read Application Guide SS APG008 EN thoroughly before installing this unit Note All liquid p...

Страница 9: ...or positioning the components in the liquid line Position the components as close to the indoor unit as possible The Component Selection tables found in Parts p 25 identify suitable components by part...

Страница 10: ...th Refrigerant Line Failure to follow instructions could cause a refrigerant line to explode under pressure which could result in death or serious injury Liquid refrigerant trapped between two valves...

Страница 11: ...promotes stable TXV operation Avoid Underground Refrigerant Lines Underground lines create risk due to refrigerant condensation during the off cycle installation debris inside the line including conde...

Страница 12: ...nsure the condensing unit is capable of operating at these conditions Example 2 10 ton coil one refrigerant circuit with two distributors and a 60 40 coil split 10 x 6 6 and 10 x 4 4 One TXV should be...

Страница 13: ...to the third party Simply stated this means that when a compressor turns on it shouldn t turn off until the expansion valve comes under control And once the compressor turns off it should be allowed...

Страница 14: ...g applications To prevent evaporator freeze up our equipment typically includes Trane Frostat coil frost protection Like hot gas bypass the Frostat system protects the coil from freezing but it does s...

Страница 15: ...OD and smaller of type L copper are suitable for use with R 410A Suction lines 3 1 8 OD must use type K or thicker wall Discharge lines liquid lines heat pump vapor lines and hot gas bypass lines 1 3...

Страница 16: ...enters the coil quickly turns to liquid The MCHE tube volume holds very little refrigerant so the refrigerant charge of the system is reduced However the tube volume is so small that if the flow of re...

Страница 17: ...are a field installed option and no longer come standard from the factory Figure 8 TTA cooling only unit and matched indoor coil typical arrangement Notes 1 If the total length of the liquid line exce...

Страница 18: ...1 For applications where the length of the liquid line exceeds 80 ft 24 m and the heat pump will start in the cooling mode remove the liquid line filter driers from the TWA heat pump and install new f...

Страница 19: ...and one check valve See Table 3 p 26 and for recommendations 2 For applications where the length of the liquid line exceeds 80 ft 24 m and the heat pump will start in the cooling mode remove the liqui...

Страница 20: ...s away from the coil by 1 inch per 10 feet 1 cm per 3 m 4 Use the DETINT to prevent oil and refrigerant migration when the unit is off The DETINT also serves to isolate the TXV bulb from suction heade...

Страница 21: ...10 feet 1 cm per 3 m 4 Use the DETINT to prevent oil and refrigerant migration when the unit is off The DETINT also serves to isolate the TXV bulb from suction header conditions See Line Sizing Routi...

Страница 22: ...xpansion valve 3 Pitch the gas line leaving the coil so that it slopes away from the coil by 1 inch per 10 feet 1 cm per 3 m 4 Use the DETINT to prevent oil and refrigerant migration when the unit is...

Страница 23: ...e for each expansion valve 3 Pitch the gas line leaving the coil so that it slopes away from the coil by 1 inch per 10 feet 1 cm per 3 m 4 Use the DETINT to prevent oil and refrigerant migration when...

Страница 24: ...m 4 Use the DETINT to prevent oil and refrigerant migration when the unit is off The DETINT also serves to isolate the TXV bulb from suction header conditions See Line Sizing Routing and Component Se...

Страница 25: ...Unit TTA1804 D TTA1804 C TTA2404 D TTA2404 C TTA3004 C Refrigerant ckts 2 1 Manifold 2 1 Manifold 1 Manifold Minimum step tons 7 5 8 6 13 4 10 12 5 GAS LINE Tube diameter in Horizontal drops 1 1 8 1...

Страница 26: ...products require two filters and two check valves one set oriented for liquid in the cooling direction and one set oriented for liquid in the heating direction For units with line lengths in excess o...

Страница 27: ...urated at 90 F Discharge Saturated at 125 F Note When calculating refrigerant charge the first step is to determine the unit charge and if the unit charge includes the first 25 foot of pipe This infor...

Страница 28: ...For more information please visit trane com or tranetechnologies com Trane has a policy of continuous product and product data improvements and reserves the right to change design and specifications...

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