Transcript
Service Facts
TCC3048A-SF-1D
SINGLE PACKAGED COOLING / ELECTRIC HEAT
4TCC3048A1000B
IMPORTANT — This document contains a wiring diagram and service information. This is customer property and is to remain with this furnace. Please return to service information pack upon completion of work.
WARNING: HAZARDOUS VOLTAGE-
DISCONNECT POWER and DISCHARGE CAPACITORS BEFORE SERVICING
PRODUCT SPECIFICATIONS MODEL RATED Volts/PH/Hz Performance Cooling BTUHj Indoor Airflow (CFM) Power Input (KW) EER/SEER (BTU/Watt-Hr.)o Sound Power Rating [dB(A)]k POWER CONN.—V/Ph/Hz Min. Brch. Cir. Ampacityl Fuse Size — Max. (amps) Fuse Size — Recmd. (amps) COMPRESSOR Volts/Ph/Hz R.L. Amps — L.R. Amps OUTDOOR COIL — TYPE Rows/F.P.I. Face Area (sq.ft.) Tube Size (in.) INDOOR COIL — TYPE Rows/F.P.I. Face Area (sq.ft.) Tube Size (in.) Refrigerant Control Drain Conn. Size (in.) OUTDOOR FAN — TYPE Dia. (in.) Drive/No. Speeds CFM @ 0.0 in. w.g.m Motor — HP/R.P.M. Volts/Ph/Hz F.L. Amps/L.R. Amps INDOOR FAN — TYPE Dia x Width (in.) Drive/No. Speeds CFM @ 0.0 in. w.g.n Motor — HP/R.P.M. Volts/Ph/Hz F.L. Amps/L.R. Amps FILTER / FURNISHED Type Recommended Recmd. Face Area (sq. ft.)p REFRIGERANT Charge (lbs.) DIMENSIONS Crated (in.) WEIGHT Shipping (lbs.) / Net (lbs.)
© 2011 Trane
4TCC3048A1000B 208-230/1/60 46500 1600 4.23 11.0 / 13.0 80 208-230/1/60 32.7 50 50 SCROLL 208-230/1/60 21.8 / 117 SPINE-FIN 2 / 24 18.01 3/8 PLATE FIN 3 / 15 5 3/8 EXPANSION VALVE 3/4 FEMALE NPT PROPELLER 27.6 DIRECT / 1 4380 1/4 / 825 230/1/60 1.4 / 3.5 CENTRIFUGAL 10 X 10 DIRECT / 3 SEE FAN PERF TABLE 3/4 / 1080 200-230/1/60 4.0 / 8.4 NO THROWAWAY 5.3 R-410 8.50 HXDXW 47.86 / 47.4 / 61.75 607 / 479
1 Rated in accordance with AHRI Standard 210/240. 2 Sound Power values are not adjusted for AHRI 270-95 tonal corrections. 3 Calculated in accordance with currently prevailing Nat'l Electrical Code. 4 Standard Air -- Dry Coil -- Outdoor. 5 Standard Air -- Dry Coil -- Indoor. 6 Rated in accordance with D.O.E. test procedure. 7 Filters must be installed in return air stream. Square footages listed are based on 300 f.p.m. face velocity. If permanent filters are used size per manufacturer's recommendation with a clean resistance of 0.05" W.C.
▲! WARNING THIS INFORMATION IS FOR USE BY INDIVIDUALS HAVING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDITIONING PRODUCT MAY RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE. THE MANUFACTURER OR SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION, NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE.
▲! CAUTION RECONNECT ALL GROUNDING DEVICES. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.
▲! CAUTION CONTAINS REFRIGERANT! SYSTEM CONTAINS OIL AND REFRIGERANT UNDER HIGH PRESSURE. RECOVER REFRIGERANT TO RELIEVE PRESSURE BEFORE OPENING SYSTEM. Failure to follow proper procedures can result in personal illness or injury or severe equipment damage.
NOTICE: Since the manufacturer has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice.
Service Facts Pressure Curves PRESSURE CURVES FOR 4TC*3048A
Cooling with Thermal Expansion Valve
LIQUID PRESSURE (PSIG)
500
(2)
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
450
400
350
(4)
(3)
300
250
(1)
200 40
50
60
70
80
90
100
110
120
OUTDOOR TEMPERATURE (Degree F) INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM 71, 67, 63 AND 59 DEG F.
170
SUCTION PRESSURE (PSIG)
165 160
(2)
155 150 145 140
(5)
(3)
135 130 125 120 115 110 105
(1)
100 40
50
60
70
80
90
100
110
120
Outdoor Temperature (Degree F)
OUTDOOR TEMPERATURE (Degree F)
Cooling performance can be checked when the outdoor temperature is above 65 degrees F. To check the cooling performance, select the proper indoor CFM, and allow the pressures to stabilize. Measure the indoor wet bulb temperature, the outdoor temperature, and the liquid and suction pressures. On the plots, locate the outdoor temperature (1), locate the indoor wet bulb (2), then, find the intersection of OD temperature and ID W.B. (3). Read Liquid (4) or Suction (5) pressure in left column.
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Service Facts Sequence of Operation General
Heating Mode
Operation of the system cooling (and optional heating) cycles is controlled by the the comfort control. Once the comfort control is set to either the HEAT or COOL, unit operation is automatic. The optional automatic changeover comfort control, when set to AUTO, automatically changes to heat or cool with sufficient room temperature change.
Heating mode uses electric heaters, which are installed separately. Refer to the Supplemental Electric Heaters Installer's Guide for additional information. On a call for heat, power from the comfort control is received at “W1”, which energizes the “AH” contactor coil. The “AH” contactor closes, powering the heater provided all element limits are closed.
With the unit disconnect closed, voltage is supplied to the unit control transformer and the crankcase heater (if provided). On single phase units, the crankcase heater is an option that is field installed.
If two stages of heat are provided and additional heat is required, the comfort control's second stage “W2” circuit is energized powering the “BH” contactor coil.
Note: The comfort control must be configured to provide a “G” signal to energize the indoor fan relay (F) during the heating mode. The heater control circuit will not be energized unless the indoor fan relay (F) is energized.
Cooling Mode With the comfort control set to COOL and the fan set to AUTO, the compressor contactor (CC) and the indoor fan motor (IDM) are energized. The energized compressor contactor (CC) completes the circuit to the compressor (CPR) and a secondary circuit to the outdoor fan motor (ODM). If the compressor safety controls are closed, the compressor (CPR) will operate with the outdoor fan motor (ODM). The indoor fan motor (IDM) will operate. The comfort control will continue to cycle the compressor and fans to maintain the desired temperature.
Pressure Drop for Electric Heater NUMBER OF RACKS AIRFLOW 1 2 CFM AIR PRESSURE DROP
With the fan switch set to ON, the indoor fan motor (IDM) will continue to run regardless of compressor and condenser fan operation. Continuous fan mode during cooling operation may not be appropriate in humid climates. If the indoor air exceeds 60% relative humidity or simply feels uncomfortably humid, it is recommended that the fan only be used in the AUTO mode.
Indoor Fan Performance 4TC*3048A
600
INCHES W.G. .003 ----
800
.004
----
1000
.005
.007
1200
.006
.008
1400
.007
.009
1600
.008
.01
2000
.01
.02
From Dwg. No. 21A730642
230v performance Horizontal Airflow 4TC*3048A -HOR MOTOR SPEED LOW MED HIGH
EXTERNAL STATIC PRESSURE (IN. WG) 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
WATTS 585 575 563 546 526 502 476 CFM 1530 1520 1494 1455 1405 1343 1270 WATTS 699 689 671 647 619 587 550 510 CFM 1810 1783 1743 1691 1627 1548 1450 1325 WATTS 966 944 914 878 837 794 753 721 CFM 2217 2157 2086 1993 1874 1740 1611 1519
0.9
1.0
-
-
0.9
1.0
-
-
Down Airflow 4TC*3048A -DOWN MOTOR SPEED LOW MED HIGH
EXTERNAL STATIC PRESSURE (IN. WG) 0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
WATTS 573 565 547 524 503 483 462 CFM 1533 1519 1478 1426 1372 1315 1248 WATTS 677 659 639 615 589 561 531 498 CFM 1771 1734 1688 1632 1567 1490 1398 1290 WATTS 909 882 859 832 797 759 726 712 CFM 2095 2024 1956 1873 1769 1651 1537 1456
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Service Facts
IMPORTANT — Retain this wiring diagram; please return this document to service information pack upon completion of work. 4
Service Facts
IMPORTANT — Retain this wiring diagram; please return this document to service information pack upon completion of work. 5
Service Facts CHARGING IN COOLING ABOVE 55°F OD AMBIENT The preferred method is to weigh in the factory charge per the unit nameplate. If weighing in the charge is not practical, the following method can be used. The following charging method is prescribed for systems with indoor TXVs.
11 (ºF) Subcooling Liquid Temperature
Liquid Pressure
(ºF)
PSIG
55
188
1. For best results – the indoor temperature should be kept between 70°F to 80°F. Add system heat if needed.
60
204
65
221
2. Whenever charge is removed or added, the system must be operated for a minimum 20 minutes to stabilize before accurate measurements can be made.
70
239
75
258
80
278
85
299
3. Measure Liquid Line Temperature and Refrigerant Pressure at service valves in the compressor compartment. 4. Locate your liquid line temperature in the left column of the table, and the intersecting liquid line pressure under the subcool value column. Add refrigerant to raise the pressure to match the table, or remove refrigerant to lower the pressure. Again, wait 20 minutes for the system conditions to stabilize before adjusting charge again. 5. When system is correctly charged, you can refer to System Pressure Curves (on page 2) to verify typical performance.
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R-410A Subcooling Charging Table
90
321
95
345
100
369
105
395
110
422
115
451
120
481
125
512
Service Facts Troubleshooting Chart
SYSTEM FAULTS REFRIGERANT CIRCUIT Liquid Pressure Too high Liquid Pressure Too Low Suction Pressure Too High Suction Pressure Too Low Liquid Refrigerant floodback (TXV System) Liquid Refrig. floodback (Cap. Tube System) I. D. Coil Frosting Compressor Runs Inadequate or No Cooling
ELECTRICAL Compressor & O.D. fan Do Not Start Compressor Will Not Start But O.D. Fan Runs O.D. Fan Won't Start Compressor Hums But Will Not Start Compressor Cycles on IOL I.D. Blower Won't Start P-PRIMARY CAUSES S-SECONDARY CAUSES
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Trane 6200 Troup Highway Tyler, TX 75707 For more information contact your local dealer (distributor)
