background image

Page 12

Revised 05−2009

TPA*S4

IMPORTANT

Use table 4 as a general guide when performing
maintenance checks. This is not a procedure for
charging the unit (Refer to Charging / Checking
Charge section). Minor variations in these pressures
may be expected due to differences in installations.
Significant differences could mean that the system
is not properly charged or that a problem exists with
some component in the system.

4.. Use the same digital thermometer used to check

outdoor ambient temperature to check liquid line
temperature. Verify the unit charge using the approach
method.

5.. The difference between the ambient and liquid

temperatures should match the approach values given
in table 5. If the values do not agree with the those in
table 5, add refrigerant to lower the approach
temperature or recover refrigerant from the system to
increase the approach temperature.

TABLE 4

TPA*S4N41Y through TPA*S4N42Y 

Normal Operating Pressures

1

MODEL

TPA036S4N4

1

TPA042S4N4

1

TPA048S4N4

1

TPA060S4N4

1

5

F(

5

C)

2

Liquid/Vapor

Liquid/Vapor

Liquid/Vapor

Liquid/Vapor

Cooling Pressures

3

65 (18)

260 / 136

231 / 135

246 / 134

256 / 116

75 (24)

303 / 140

267 / 138

286 / 136

298 / 123

85 (29)

348 / 143

314 / 140

330 / 138

345 / 131

95 (35)

398 / 145

367 / 143

379 / 140

395 / 135

105 (41)

452 / 148

414 / 146

432 / 143

450 / 138

115 (45)

512 / 151

473 / 148

492 / 146

512 / 141

Heating Pressures

3

60 (15)

350 / 131

360 / 135

361 / 130

370 / 127

50 (10)

331 / 107

340 / 110

334 / 100

350 / 102

40 (4)

314 / 88

324 / 91

302 / 92

331 / 81

30 (−1)

290 / 74

307 / 73

300 / 73

309 / 62

20 (−7)

283 / 58

298 / 61

286 / 60

300 / 56

1

These are most−popular−match−up pressures. Indoor match up,
indoor air quality, and indoor load cause pressures to vary.

2

Temperature of the air entering the outdoor coil.

3

Liquid ±10 and Vapor ±5 psig.

TABLE 5

TPA*S4N41Y through TPA*S4N42Y 

TPA036S4 Approach Values for Charging

_

Liquid Line Temperature

_

Outdoor Temperature

=

_

Approach Temperature

Model

−036

−042

−048

−060

°F (°C)*

13 (7.2)

9 (5)

6 (3.3)

9 (5)

NOTE − For best results, use the same electronic thermometer to
check both outdoor-ambient and liquid-line temperatures.

*F: +/−1.0°; C: +/−0.5°

D − Charging  TPA*S4N43Y

This system is charged with HFC−410A refrigerant which
operates at much higher pressures than HCFC−22. The
recommended check expansion valve is approved for use
with HFC−410A. Do not replace it with a valve that is
designed to be used with HCFC−22. This unit is NOT
approved for use with coils that include metering orifices or
capillary tubes.

The unit is factory−charged with the amount of HFC−410A
refrigerant indicated on the unit rating plate. This charge is
based on a matching indoor coil and outdoor coil with a 15
foot (4.6 m) line set. 

For varying line set lengths and for

various indoor unit matchups, the refrigerant charge
must be adjusted per tables

 

6 (Page 14) and 8

(Page 15).

 A blank space is provided on the unit rating

plate to list the actual field charge.

IMPORTANT

Mineral oils are not compatible with HFC−410A. If oil
must be added, it must be a polyol ester oil.

Check Indoor Airflow before Charging

IMPORTANT

CHECK AIRFLOW BEFORE CHARGING!

NOTE − Be sure that filters and indoor and outdoor coils are
clean before testing.

Summary of Contents for T?CLASS TPA S4

Page 1: ...allation adjustment alteration service or maintenance can cause personal injury loss of life or damage to property Installation and service must be performed by a licensed professional installer or eq...

Page 2: ...tdoor Fan Diameter in No of Blades 18 4 22 4 22 4 22 4 Motor hp 208 230V 1 5 460V 1 6 1 3 1 3 1 4 Cfm 2450 3890 3890 3830 Rpm 1100 1080 1085 830 Watts 190 400 375 330 Shipping Data lbs 1 package 180 2...

Page 3: ...harge sufficient for 15 ft length of refrigerant lines 2 HACR type circuit breaker or fuse 3 Refer to National or Canadian Electrical Code manual to determine wire fuse and disconnect size requirement...

Page 4: ...box See figure 3 24V THERMOSTAT TERMINAL STRIP FIGURE 3 W1 C L R O Y1 1 Compressor Contactor K1 The compressor is energized by a contactor located in the control box See figure 2 Three pole contactor...

Page 5: ...utes have passed If the jumper is not removed until after the additional 5 second period has elapsed the defrost will terminate and the test option will not function again until the jumper is removed...

Page 6: ...ESSURE DISCHARGE PRESSURE The counterclockwise orbiting scroll draws gas into the outer crescent shaped gas pocket created by the two scrolls figure 8 1 The centrifugal action of the orbiting scroll s...

Page 7: ...OTOR SHAFT D Reversing Valve L1 and Solenoid A refrigerant reversing valve with electro mechanical solenoid is used to reverse refrigerant flow during unit operation The reversing valve requires no ma...

Page 8: ...EXPANSION CHECK VALVE INDOOR UNIT OUTDOOR UNIT LIQUID LINE SERVICE PORT GAUGE MANIFOLD DISTRIBUTOR INDOOR COIL TO HFC 410A DRUM FIGURE 11 TPA S4 HEATING CYCLE SHOWING MANIFOLD GAUGE CONNECTIONS OUTDOO...

Page 9: ...n adjustable wrench 2 Using service wrench and hex head extension 5 16 for vapor line and 3 16 for liquid line back the stem out counterclockwise until the valve stem just touches the retaining ring 3...

Page 10: ...es and within the system Regulator setting must not exceed 150 psig 1034 kpa Failure to use a regulator can cause equipment failure resulting in injury or death C Evacuating the System 1 Attach gauge...

Page 11: ...ough the outdoor coil to achieve pressures in the 200 250 psig 1379 1724 kPa range These higher pressures are necessary for checking the charge Block equal sections of air intake panels and move obstr...

Page 12: ...290 74 307 73 300 73 309 62 20 7 283 58 298 61 286 60 300 56 1 These are most popular match up pressures Indoor match up indoor air quality and indoor load cause pressures to vary 2 Temperature of th...

Page 13: ...23 23 22 22 22 20 19 18 17 16 15 78 23 23 23 22 22 21 21 20 19 18 17 16 15 14 76 22 22 22 21 21 20 19 19 18 17 16 15 14 13 74 21 21 21 20 19 19 18 17 16 16 15 14 13 12 72 20 20 19 18 17 17 16 15 15 1...

Page 14: ...per 1 5m NOTE If line length is greater than 15 ft 4 6 m add this amount If line length is less than 15 ft 4 6 m subtract this amount Subcooling Charging Method Requirements these items are required f...

Page 15: ...temperature record in the LIQ space 7 Read the liquid line pressure then find its corresponding temperature in the temperature pressure table 13 and record it in the SAT space 8 Subtract LIQ temp fro...

Page 16: ...32 100 8 67 190 9 102 326 4 4 43 1 33 102 9 68 194 1 103 331 2 45 6 34 105 69 197 3 104 335 7 0 48 2 35 107 1 70 200 6 105 340 5 1 49 5 36 109 2 71 203 9 106 345 3 2 50 9 37 111 4 72 207 2 107 350 1 3...

Page 17: ...rgizing the reversing valve L1 See steps 1 2 and 3 End of FIRST STAGE HEAT See steps 4 5 and 6 DEFROST MODE During heating operation when outdoor coil temperature drops below 35 F 2 C or 42 F 5 5 C de...

Page 18: ...valve L1 See steps 1 2 and 3 End of FIRST STAGE HEAT See steps 4 5 and 6 DEFROST MODE During heating operation when outdoor coil temperature drops below 35 F 2 C or 42 F 5 5 C defrost switch thermost...

Reviews: