Service Facts. WARNING: HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE 4TTM3-SF-1. Split System Cooling 4TTM3018-4TTM3060

Transcription

1 4TTM3-SF-1 Service Facts Split System Cooling 4TTM3018-4TTM3060! CAUTION UNIT CONTAINS R-410A REFRIGERANT! R-410A OPERATING PRESSURE EXCEEDS THE LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS REQUIRED. FAILURE TO USE PROPER SERVICE TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR PERSONAL INJURY. SERVICE USE ONLY R-410A REFRIGERANT AND APPROVED POE COMPRESSOR OIL. IMPORTANT This document contains a wiring diagram, a parts list, and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work. WARNING: HAZARDOUS VOLTAGE - DISCONNECT POWER and DISCHARGE CAPACITORS BEFORE SERVICING THIS INFORMATION IS INTENDED FOR USE BY INDIVIDUALS POS SES S ING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL EXPERIENCE. ANY ATTEMPT TO REPAIR A CEN- TRAL AIR CONDITION ING PRODUCT MAY RESULT IN PERSONAL INJURY AND OR PROPERTY DAMAGE. THE MANUFACTURER OR SELLER CANT BE RESPON SIBLE FOR THE INTERPRETATION OF THIS INFORMATION, R CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE. RECONNECT ALL GROUNDING DEVICES. ALL PARTS OF THIS PRODUCT 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. CONTAINS REFRIGERANT!! WARNING! CAUTION! CAUTION 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. TICE: The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice. Trane /11

2 OUTDOOR UNIT 12 POWER CONNS. V/PH/HZ 3 MIN. BRCH. CIR. AMPACITY BR. CIR. PROT. RTG. - MAX. (AMPS) COMPRESSOR. USED -. SPEEDS VOLTS/PH/HZ R.L. AMPS 7 - L.R. AMPS FACTORY INSTALLED START COMPONENTS 8 INSULATION/SOUND BLANKET COMPRESSOR HEAT OUTDOOR FAN DIA. (IN.) -. USED TYPE DRIVE -. SPEEDS 0.0 IN. W.G. 4. MOTORS - HP MOTOR SPEED R.P.M. VOLTS/PH/HZ F.L. AMPS OUTDOOR COIL FACE AREA (SQ. FT.) REFRIGERANT LBS. R-410A (O.D. UNIT) 5 FACTORY SUPPLIED LINE SIZE - IN. O.D. GAS 6 LINE SIZE - IN. O.D. LIQ. 6 3/8 CHARGING SPECIFICATION - See Charging Section DIMENSIONS CRATED (IN.) WEIGHT SHIPPING (LBS.) NET (LBS.) PRODUCT SPECIFICATIONS 4TTM3024A1000B TTM3018A1000B PROPELLER DIRECT / / LBS., 3 OZ. 5/8 H X W X D 32-3/8 x 24-3/4 x 26-3/ PROPELLER DIRECT / / LBS., 11 OZ. 5/8 3/8 H X W X D 32-3/8 x 24-3/4 x 26-3/ TTM3030A1000B -U PROPELLER DIRECT / / LBS., 2 OZ. 3/4 3/8 H X W X D 32-3/8 x 24-3/4 x 26-3/ TTM3036A1000B PROPELLER DIRECT / / LBS., 5 OZ. 3/4 3/8 H X W X D 32-3/8 x 24-3/4 x 26-3/ OUTDOOR UNIT 12 POWER CONNS. V/PH/HZ 3 MIN. BRCH. CIR. AMPACITY BR. CIR. PROT. RTG. - MAX. (AMPS) COMPRESSOR. USED -. SPEEDS VOLTS/PH/HZ R.L. AMPS 7 - L.R. AMPS FACTORY INSTALLED START COMPONENTS 8 INSULATION/SOUND BLANKET COMPRESSOR HEAT OUTDOOR FAN DIA. (IN.) -. USED TYPE DRIVE -. SPEEDS 0.0 IN. W.G. 4. MOTORS - HP MOTOR SPEED R.P.M. VOLTS/PH/HZ F.L. AMPS OUTDOOR COIL FACE AREA (SQ. FT.) REFRIGERANT LBS. R-410A (O.D. UNIT) 5 FACTORY SUPPLIED LINE SIZE - IN. O.D. GAS 6 LINE SIZE - IN. O.D. LIQ. 6 CHARGING SPECIFICATION - See Charging Section DIMENSIONS CRATED (IN.) WEIGHT SHIPPING (LBS.) NET (LBS.) 4TTM3042A1000B PROPELLER 23-1 DIRECT / / LBS., 0 OZ. 7/8 3/8 H X W X D 32-3/8 x 29-3/4 x 30-1/ TTM3048A1000B PROPELLER 23-1 DIRECT / / LBS., 13 OZ. 7/8 3/8 H X W X D 32-3/8 x 29-3/4 x 30-1/ TTM3060A1000B PROPELLER 23-1 DIRECT / / LBS., 13 OZ. 7/8 3/8 H X W X D 32-3/8 x 29-3/4 x 30-1/ Certified in accordance with the Air-Source Unitary Air-conditioner Equipment certification program, which is based on A.H.R.I. standard 210/ Rated in accordance with A.H.R.I. standard Calculated in accordance with Natl. Elec. Codes. Use only HACR circuit breakers or fuses. 4 Standard Air Dry Coil Outdoor 5 This value approximate. For more precise value see unit nameplate. 6 Max. linear length 100 ft.; Max. lift - Suction 60 ft.; Max lift - Liquid 60 ft. 7 This value shown for compressor RLA on the unit nameplate and on this specification sheet is used to compute minimum branch circuit ampacity and max. fuse size. The value shown is the branch circuit selection current. 8 No means no start components. Yes means quick start kit components. PTC means positive temperature coefficient starter. 2 4TTM3-SF-1

3 REFRIGERANT CIRCUIT FIELD INSTALLED DRIER, SHIPS WITH UNIT 4TTM3-SF-1 3

4 System Charge Adjustment This system cannot be appropriately charged by subcooling. This new charging procedure helps prevent over charging. It is important to follow these instructions. You will need to measure the Outdoor Ambient temperature, the Suction Line Pressure (PSIG), The Liquid Temperature and the Liquid Pressure. You will charge to the MINIMUM Liquid Temperature or Maximum Liquid Line Pressure, whichever is reached first. STEP 1 - Check the indoor and outdoor ambient temperatures. Manual Charge Assist Hookup Leave bottle closed until ready to charge The Outdoor Ambient Temperature should be above 60ºF. If if the Outdoor Ambient temperature is below 60ºF then charge to 60ºF temperature and 115 Suction Line Pressure (PSIG) on the charging charts. The unit will be under charged and you will have to return when charging can be accurately performed. The Indoor Ambient Temperature must be kept between 70ºF to 100ºF. Raise the indoor temperature if needed, one method of increasing the indoor temperature is to run the furnace. Decrease the indoor temperature if needed, If the Indoor Ambient Temperature is above 100 ºF, operate the system to decrease the indoor temperature. 125ºF 60ºF Outdoor Temp 100ºF 70ºF Indoor Temp STEP 2 - Stabilize the system. Operate the system in cooling mode for a minimum of ten (10) minutes. Important: Whenever charge is removed or added, the system must be operated for a minimum of ten (10) minutes to stabilize before accurate measurements can be made. 10 MIN. If Suction Line Pressure is below 115 PSIG the system may experience fluctuations in pressures and temperatures due to expansion valve hunting. 4 4TTM3-SF-1

5 Example This system cannot be appropriately charged by subcooling. This new charging procedure helps prevent over charging. It is important to follow these instructions. You will need to measure the Outdoor Ambient temperature, the Suction Line Pressure (PSIG), The Liquid Temperature and the Liquid Pressure. You will charge to the MINIMUM Liquid Temperature or Maximum Liquid Line Pressure, whichever is reached first. This example demonstrates how to obtain your Target (MINIMUM) Liquid Temperature or Maximum Liquid Pressure using the instructions and tables provided on the following pages. 1. Identify the chart that applies to your outdoor unit model number. 2. Find the Measured Outdoor Ambient Temperature along the top of the chart. For this example the Measured Outdoor Ambient Temperature is 97 ºF. 4TTM3060A Locate the Measured Suction Pressure along the left side of the chart. For this example the Measured Suction Pressure is 130 PSIG. 4TTM3060A Determine the Target (MINIMUM) Liquid Temperature at the intersection of the Measured Suction Pressure and the Measured Outdoor Ambient Temperature. 4TTM3060A If intersection falls between two listed temperatures on the table you will need to estimate Find the Maximum Allowable Liquid Pressure. If intersection falls between two listed pressures on the table you will need to estimate. 4TTM3060A Target (MINIMUM) Liquid Temperature = 107ºF 414 Maximum Allowable Liquid Pressure = 414 PSIG 4TTM3-SF-1 5

6 STEP 3 - Measure Outdoor Ambient air temperature entering coil. Outdoor Ambient air temperature = F 6 STEP 4 - Measure Suction Line and Liquid line pressures Suction Line Pressure = PSIG Liquid Line Pressure = PSIG Note: If Suction Line Pressure is below 115 PSIG the system may experience fluctuations in pressures and temperatures due to expansion valve hunting. If fluctuations in Suction Line Pressure are noted then use the average PSIG. Manual Charge Assist Hookup Leave bottle closed until ready to charge STEP 5 - Determine the Liquid Line Temperature Attach a K-type temperature probe to the Liquid Line close to the Liquid Line Service Valve. The probe must be insulated. Insulation Measured Liquid Line Temp = ºF 107 F 6 4TTM3-SF-1

7 STEP 6 - Determine Target (MINIMUM) Liquid Temperature 1. Identify the table that applies to your outdoor unit model number. 2. Find the Measured Outdoor Ambient Temperature from Step 3 along the top of the table. If the Outdoor Ambient is below 60 ºF use the 60 ºF temperature on the table. 3. Locate the Measured Suction Pressure from Step 4 along the left side of the table. If system suction PSIG is below 115, use the 115 pressure on the table. 4. Determine the Target (MINIMUM) Liquid Temperature at the intersection of the Measured Suction Pressure and the Measured Outdoor Ambient Temperature. If intersection falls between two listed temperatures on the table you will need to estimate. 5. Locate the Maximum Allowable Liquid Pressure along the bottom of the table. If intersection falls between two listed pressures on the table you will need to estimate. Target (MINIMUM) Liquid Temperature = ºF Maximum Allowable Liquid Pressure = PSIG The following pages contain the charging tables needed for these steps. 4TTM3-SF-1 7

8 Charging Tables 4TTM3018A1 4TTM3024A1 4TTM3030A1 4TTM3036A1 8 4TTM3-SF-1

9 Charging Tables 4TTM3042A1 4TTM3048A1 4TTM3060A1 4TTM3-SF-1 9

10 STEP 7 - Determine Required Refrigerant Adjustment Compare the Measured Liquid Line Temperature from Step 4 against the Target (MINIMUM) Liquid Temperature from Step 6. If the Measured Liquid Line Temperature is above the Target (MINIMUM) Liquid Temperature and the Maximum Allowable Liquid Pressure has not been exceeded, you will add charge to the system. If the Measured Liquid Line Pressure is higher than the Maximum Allowable Liquid Pressure, you will remove charge. If the Measured Liquid Line Temperature is lower than the Target (MINIMUM) Liquid Temperature, you will remove charge. STEP 8 - Add or Remove System Charge Add system charge If step 7 above indicates to add charge: 1. Connect charging hose from bottle to charging port (bottle first). 2. Purge hose at bottle fitting. 3. Open bottle and turn upside down. Once the Measured Liquid Line Temperature is within 1 to 2 ºF of the Target (MINIMUM) Liquid Temperature, stop charging. As the charge level in the unit increases, Suction Pressure might increase slightly and Liquid Line temperature will decrease. Note: The manual charge assist port allows you to charge the unit using liquid. Manual Charge Assist Hookup Leave bottle closed until ready to charge Important: Charging must be performed using the manual charge assist port for accurate charging. Remove system charge If the Measured Liquid Line Pressure is higher than the Maximum Allowable Liquid Pressure or if the Measured Liquid Line Temperature is lower than the Target (MINIMUM) Liquid Temperature, recover refrigerant from the system. 10 4TTM3-SF-1

11 STEP 9 - Verify Refrigerant Adjustment Run system for ten (10) minutes. Check new Suction Pressure and Liquid Line Temperature. Measured Liquid Line Temperature = ºF Measured Suction Line Pressure = PSIG Measured Liquid Line Pressure = PSIG 10 MIN. If the current Measured Suction Pressure is different than the previous Measured Suction Pressure measured in Step 4, repeat Steps 5-8 and locate the new Target (MINIMUM) Liquid Temperature and Maximum Allowable Liquid Pressure using the table. Adjust charge if required. STEP 10 - Record System Information Record system pressures and temperatures after charging is complete. Outdoor model number = Measured Outdoor Ambient = ºF Measured Indoor Ambient = ºF Measured Liquid Line Temp = ºF Measured Suction Line Temp = ºF Liquid Gage Pressure = PSIG Suction Gage Pressure = PSIG 4TTM3-SF-1 11

12 SCHEMATIC DIAGRAM D156583P01Rev TTM3-SF-1

13 WIRING DIAGRAM D156583P01Rev01 4TTM3-SF-1 13

14 TROUBLESHOOTING Compressor fails to start Contactor check Is contactor energized? (contacts closed) Go To: Compressor won t run Check for 24 volts AC across contactor coil Is voltage present at contactor coil? Replace contactor Check control transformer and control fuse Is the control transformer and fuse good? Jumper R to Y low voltage terminals at thermostat sub base. Does the contactor energize? Replace the room thermostat Repair or replace transformer or fuse. Investigate cause for failure (possible short in field wiring) Repair or replace connecting wiring Single Pole Contactor (MS)* Double Pole Contactor (MS)* OUT T2 T1 T2 T1 OUT HIGH VOLTAGE Contactor Coil 24 VAC HIGH VOLTAGE IN L2 L1 L2 L1 IN *Refer to Wiring Diagram to determine if a single pole or double pole contactor is used. 14 4TTM3-SF-1

15 TROUBLESHOOTING Compressor won t run Contactor is closed Check for high voltage to contactor Is high voltage present at T1 and T2? Check for open IOL (Internal Overload) Check resistance of C to S and C to R Check power supply from disconnect and/or breaker panel. Does the resistance check show an open circuit from C to S or C to R? Allow compressor time to cool and re-test Check for open windings. Does a resistance check show an open circuit between R and S? Replace the compressor Check for locked rotor Is voltage present at C to S and C to R with locked rotor amps on C? Check Start- Capacitor and Relay (if present) and Run Capacitor Check wiring to compressor C, S and R Do the start components and run capacitor check good? Replace the compressor Replace start components and/ or run capacitor 4TTM3-SF-1 15

16 6200 Troup Highway Tyler, TX /11 The manufacturer has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice.