Carrier 48MPD manual

Installation, Start-Up and Service Instructions CONTENTS Page GENERAL ................................. 2 SAFETY CONSIDERA TIONS ................. 2 INST ALLA TION ............................ 3-28 Jobsite Survey ............................. 3 Unit Placement ............................ 3 Roof Mount ................................ 3 Slab Mount ..[...]

CONTENTS (cont) Page Lubrication ................................ 4 7 • COMPRESSORS • F AN SHAFT BEARINGS • F AN MOTOR BEARINGS • DOOR HINGES Coil Cleaning .............................. 4 7 Refrigerant Circuit ......................... 4 7 Oil Charge ................................. 4 9 Moisture/Liquid Indicator ................... 4 9 Fi[...]

INST ALLA TION Jobsite Survey — Complete the following checks be- fore installation. 1. Consult local building codes and the NEC (National Electrical Code) (ANSI/NFP A [National Fire Protection Association] 70) for special installation requirements. 2. Determine unit location (from project plans) or select unit location. 3. Check for possible ove[...]

T able 1 — Physical Data BASE UNIT 48/50MP 62L 70M 82N NOMINAL CAP ACITY (tons) 80 90 105 OPERA TING WEIGHT (lb) Base Unit (48MP/50MP) 16,810/16,550 18,060/17,800 22,660/22,400 Copper Condenser Coils 675 725 725 Exhaust Fan 1,675 1,775 2,375 COMPRESSORS Semi-Hermetic Number of Refrigerant Circuits 22 2 Circuit (No. of Cylinders) A (6) B (6) A1 (6[...]

T able1 — Physical Data (cont) BASE UNIT 48/50MP 90P 10R NOMINAL CAP ACITY (tons) 1 15 120 OPERA TING WEIGHT (lb) Base Unit (48MP/50MP) 24,660/24,750 25,1 10/25,100 Copper Condenser Coils 950 950 Exhaust Fan 2400 2400 COMPRESSORS Semi-Hermetic Number of Refrigerant Circuits 22 Circuit (No. of Cylinders) A1 (6), A2 (6) B1 (6), B2 (6) A1 (6), A2 (6[...]

T able 2 — Optional Power Exhaust Specifications UNIT 48/50MP 62L 70M 82N T ype 100% Mod 100% Non Mod 100% Mod 100% Non Mod 100% Mod 100% Non Mod Motor Hp 30 30 40 40 40 40 Motor Frame Size 286T 286T 324T 324T 324T 324T Eff iciency at Full Load (%) Standard Eff iciency 92.4 92.4 93.0 93.0 93.0 93.0 High Eff iciency 93.6 93.6 94.5 94.5 94.5 94.5 [...]

NOTES: 1. Roof curb is shipped disassembled. 2. Roof curb: 14 gage [V A03-56] steel. 3. Dimensions in [ ] are in millimeters. 4. T o prevent standing water in the drain pan of the indoor section, roof curb and unit must be level within tolerances shown. NOTES: 1. T o prevent the hazard of stagnant water build-up in the drain pan on the indoor secti[...]

NOTES: 1. Roof curb is shipped disassembled. 2. Roof curb: 14 gage [V A03-56] steel. 3. Dimensions in [ ] are in millimeters. 4. T o prevent standing water in the drain pan of the indoor section, roof curb and unit must be level within tolerances shown. NOTES: 1. T o prevent the hazard of stagnant water build-up in the drain pan on the indoor secti[...]

UNIT SIZE 48MPD,E WEIGHT A B C D E F lb kg mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. 62L 16,810 7624 3505 1 1- 6 957 3-1 11 ⁄ 16 5909 19-4 5 ⁄ 8 1203 3-1 1 3 ⁄ 8 13 01 1 42-8 1 ⁄ 4 14 256 46-9 1 ⁄ 4 70M 18,060 8190 3647 1 1-1 1 9 ⁄ 16 1 165 3-9 7 ⁄ 8 6166 20-2 3 ⁄ 4 1264 4- 1 3 ⁄ 4 13 297 43-7 1 ⁄ 2 14 542 47-8[...]

UNIT SIZE 48MPD,E WEIGHT A B C D E F lb kg mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. 82N 22,660 10 295 3646 1 1-1 1 9 ⁄ 16 — — 6734 22- 1 1 ⁄ 8 1753 5-9 13 957 45-9 1 ⁄ 2 15 202 49-10 1 ⁄ 2 90P 24,660 1 1 203 1938 6- 4 5 ⁄ 16 2572 8-5 1 ⁄ 4 7283 23-10 3 ⁄ 4 1765 5-9 1 ⁄ 2 14 821 48-7 1 ⁄ 2 16 066 52- 8 1 ⁄ [...]

UNIT SIZE 50MP WEIGHT (See Note 3) AB C1 (See Note 2) C2 (See Note 2) DE F lb kg mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. 62L 16,550 751 1 3505 1 1 8 -6 9 957 3 8 -1 11 ⁄ 16 9 5880 19 8 -3 1 ⁄ 2 9 6325 20 8 -9 9 1203 3 8 -1 1 3 ⁄ 8 9 13 01 1 42 8 -8 1 ⁄ 4 9 14 256 46 8 -9 1 ⁄ 4 9 70M 17,800 8078 3647 1 1 8 -1 [...]

UNIT SIZE 50MP WEIGHT (See Note 3) AB C1 (See Note 2) C2 (See Note 2) DE F lb kg mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. 82N 22,400 10 295 3646 1 1 8 -1 1 9 ⁄ 16 9 — — 6702 21 8 -1 1 7 ⁄ 8 9 7180 23 8 -6 11 ⁄ 16 9 1753 5 8 -9 9 13 957 45 8 -9 1 ⁄ 2 9 15 202 49 8 -10 1 ⁄ 2 9 90P 24,750 1 1 375 1938 6 8 -4 [...]

NOTICE TO RIGGERS UNIT SIZE WEIGHT A BCDE Unit 48MP Unit 50MP Exhaust Fan lb kg lb kg lb kg in. mm in. mm in. mm in. mm in. mm 62L 16,810 7 624 16,550 7 507 1675 760 71.25 1810 129.00 3277 1 12.44 2856 138.00 3505 N/A N/A 70M 18,060 8 190 17,800 8 074 1775 805 71.25 1810 129.00 3277 1 12.44 2856 143.56 3646 N/A N/A 82N 22,660 10 295 22,400 10 161 2[...]

Make Electrical Connections POWER SUPPL Y — Electrical characteristics of available power supply must agree with unit nameplate rating. Supply voltage must be within the limits shown in T able 5. Field W ire Routing — Field wiring is brought into the unit through the bottom of the control box. A3 5 ⁄ 8 -in. hole for field power wiring and a [...]

Disconnect must be located within sight of the unit and read- ily accessible from the unit in compliance with NEC Article 440-14. All field wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) value shown on the unit informative plate. See Fig. 12 for power wiring connections to the unit power terminal blo[...]

T able 5 — Electrical Data UNIT 48MP/ 50MP VOL T AGE 3 Ph, 60 Hz VOL T AGE RANGE COMP NO. A1 COMP NO. A2 COMP NO. B1 COMP NO. B2 CONDENSER FA N MOTORS EV APORA TOR F AN MOTOR POWER EXHAUST F AN MOTOR MCA MOCP Min Max RLA LRA RLA LRA RLA LRA RLA LRA Qty FLA Hp FLA Hp FLA Hp 62L 460 414 508 65.4 345 — — 65.4 345 — — 6 3.3 1 40 30 — — 20[...]

Control Wiring — See Fig. 13 for sensor wiring con- nections to main and auxiliary control boxes. The recom- mended types of control wiring for 48/50MP unit devices are shown in T able 6. T able 6 — Recommended Sensor and Device Non-Shielded Cable MANUF ACTURER P ART NO. Regular Wiring Plenum Wiring Alpha 1895 — American A21451 A48301 Belden [...]

LEGEND COM — Common SW — Switch T— T erminal TB — T erminal Block TH — Thermostat Heating Accessory Field Wiring *Constant volume applications only . Fig. 13 — Space T emperature Sensor Wiring 18[...]

2 1 TB3 RED BLK TO PROCESSOR MODULE NO. 1 SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 RED BLK RED BLK RED BLK RED BLK SP ACE TEMPERA TURE A VERAGING — 4 SENSOR APPLICA TION 1 2 RED BLK TB3 TO PROCESSOR MODULE NO. 1 RED BLK RED BLK RED BLK SENSOR 1 SENSOR 2 SENSOR 3 RED BLK SENSOR 6 SENSOR 5 RED BLK SENSOR 4 RED BLK RED BLK RED BLK SENSOR 8 SENSOR 7 SENSO[...]

8 9 10 12 11 10 DSIO2 J5 CHANNEL 60 TB3 FIELD CONTROL WIRING RED BLU ORN LEGEND T B— T erminal Block Field Wiring Component T erminal □ T erminal Block T erminal Fig. 15 — Heat Interlock Relay SR + ENTHALPY CONTROL REMOVE 620 Ω RESISTOR S + ENTHALPY SENSOR DIFFERENTIAL ENTHALPY SENSOR (RETURN AIR) Fig. 16 — Differential Enthalpy Sensor LE[...]

TO 24-V ISOLA TED TRANSFORMER BRN RED CFM ACY OUTDOOR AIR 24V 24V + - TB2 9 10 LEGEND T B— T erminal Block Field Wiring Component T erminal □ T erminal Block T erminal Fig. 21 — Outdoor Airflow Control Fig. 22 — Timed Discrete Output PSIO NO. 2 J6 HUM VL V CARRIER P ART NO. HK35AA001 43 44 45 HHR + + - HUMIDIFIER ACTUA TOR HUMIDIFIER RELA [...]

+ _ BLK WHT RED + _ BLK WHT RED + _ BLK WHT RED + _ BLK WHT RED DPT1 DPT2 SPT1 SPT2 BLK BLK BLK BLK BLK RED RED BRN BRN WHT WHT RES RES BLK RED 4 5 TB3 WHT WHT WHT WHT RES RES 7 8 10 11 13 14 10K OHM 1/2 W A TT 5% + - 10K OHM 1/2 W A TT 5% + - 10K OHM 1/2 W A TT 5% + - 10K OHM 1/2 W A TT 5% + - 16 17 PSIO NO. 1 TRANSDUCER ACCESSORY J7 SUCTION GAS T[...]

Carrier Comfort Network Interface — The 48/50MP units can be connected to the CCN if desired. The communication bus wiring is supplied and installed in the field. It consists of shielded, 3-conductor cable with drain wire. The system elements are connected to the communication bus in a daisy chain arrangement. The positive pin of each system ele[...]

The following color code is recommended: SIGNAL TYPE CCN BUS CONDUCTOR INSULA TION COLOR COMM1 PLUG PIN NO. 1 RED 1 GROUND WHITE 2 2 BLACK 3 NOTE: If a cable with a dif ferent color scheme is selec- ted, a similar color code should be adopted for the entire network. At each system element, the shields of its communication bus cables must be tied to[...]

Fig. 31 — Auxiliary Control Box Location (50MP70M Unit Shown) V ARIABLE FREQUENCY DRIVE DUCT PRESSURE TRANSDUCER BUILDING PRESSURE TRANSDUCER (HIDDEN) Fig. 32 — Auxiliary Control Box F ACTORY INST ALLED TUBING DPC BPC LO HI LO HI TO BUILDING PRESSURE TO SUPPLY DUCT FIELD INST ALLED TUBING TO OUTDOOR REFERENCE PRESSURE PORT LEGEND BPC — Buildi[...]

Gas Piping (48 Series Units Only) — Unit is equipped for use with natural gas only . Installation must conform with local building codes, or in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1. A 1 ⁄ 8 -in. NPT tapping plug, accessible for test gage con- nection, must be field installed immediately upstream of gas suppl[...]

Fan Isolator Adjustment — Remove shipping hard- ware from both the supply fan and the optional exhaust fan. The indoor fan shipping blocks on both the supply fan and the optional power exhaust fan (4 per fan) must be removed from each corner of the fan sled before starting unit. Re- move shipping bolt connecting bottom flanges of the fan sled cr[...]

PRE-ST ART -UP IMPOR T ANT : Before beginning Pre-Start-Up or Start- Up, review Start-Up Checklist at the center of this publication. The Checklist assures proper start-up of a unit and provides a record of unit condition, applica- tion requirements, system information, and operation at initial start-up. Do not attempt to start the air-conditioning[...]

1 1. Check supply fan belts, sheaves, and bearings. Check the lubrication of the fan and motor bearings. Check bear- ing and bearing set screws for tightness. Check sheave alignment and belt tension. Hand turn fan to ensure fan wheel does not rub on housing. The fan shaft and motor shaft must turn freely before power is applied to the unit. 12. Che[...]

T able 8 — Fan Performance (Forward Curved) — 48/50MP62L* AIRFLOW (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.50 0.75 1.00 1.25 1.50 1.75 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 16,000 346 3.4 382 4.1 415 5.0 448 6.0 478 7.2 508 8.6 18,000 371 4.7 404 5.5 436 6.4 466 7.4 494 8.6 522 10.0 20,000 398 6.3 428 7.2 458 8.2 486 9.[...]

T able 10 — Fan Performance (Forward Curved) — 48/50MP82N* AIRFLOW (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.50 0.75 1.00 1.25 1.50 1.75 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 22,000 293 6.2 326 7.7 359 9.3 392 1 1.2 425 13.2 457 15.3 24,000 308 7.6 339 9.1 369 10.8 399 12.7 429 14.7 459 16.9 26,000 324 9.2 352 10.8 380 1[...]

T able 12 — Fan Performance (Forward Curved) — 48/50MP10R* AIRFLOW (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.50 0.75 1.00 1.25 1.50 1.75 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 26,000 315 9.5 346 10.9 367 10.9 390 12.4 412 14.0 434 15.7 28,000 330 1 1.2 359 12.7 380 14.0 401 14.9 422 16.0 446 17.7 30,000 346 13.2 372 14.8 [...]

T able 14 — Fan Performance (Air Foil) — 48/50MP70M* AIRFLOW (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 18,000 668 5.1 702 5.9 735 6.7 767 7.5 801 8.4 833 9.3 863 10.3 893 1 1.2 924 12.2 954 13.3 20,000 72[...]

T able 16 — Fan Performance (Air Foil) — 48/50MP90P* AIRFLOW (Cfm) A V AILABLE EXTERNAL ST A TIC PRESSURE (in. wg) 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 24,000 501 5.70 534 6.78 565 7.89 594 9.05 622 10.2 649 1 1.5 674 12.7 702 14.1 729 15.6 — — 26,0[...]

T able 18 — Component Pressure Drop (in. wg) COMPONENT 22,000 26,400 30,000 34,000 38,000 42,000 45,800 48,200 52,000 HEA T EXCHANGER (48MP ONL Y) 0.31 0.40 0.49 0.58 0.70 0.82 0.95 1.03 1.23 T able 19 — Maximum Allowable Supply Fan Wheel Speed (Rpm) 48/50MP F AN TYPE Forward Curved Airfoil 62L, 70M 835 1595 82N, 90P , 10R 715 1298 T able 20 ?[...]

KEYP AD AND DISPLA Y MODULE (HSIO) CONFIGURA TION IMPOR T ANT : The HSIO keypad and display module is required for initial start-up of these units. All units are shipped in standby mode, and the HSIO should be used to change the unit to run mode. Once the unit is in run mode, the HSIO is not required for normal operation. The keypad and display mod[...]

If the unit is being used in a CV application, then perform the following: 1. Enter the configuration function by pressing and . 2. Scroll down to unit type. TYPE 1 will be displayed. ENTER 3. Press and to change the unit type to CV . 4. Scroll down to data reset. DTRS will be displayed. Press ENTER and to save changes. The fan operation type shou[...]

T able 25 — Basic Configuration Data SET POINT SUBFUNCTION DISPLA Y DEF AUL T RANGE Unit T ype TYPE 1 = V A V CV = 0, V A V = 1 CV Fan Mode F ANM 1 (Continuous) Auto = 0, Cont = 1 Economizer Minimum Damper Position MDP 20 percent 0 to 100 Heating Occupied* OHSP 68 (F) 55 to 80 Cooling Occupied OCSP 78 (F) 55 to 80 Cooling Unoccupied UCSP 90 (F) [...]

General NOTE: If unit is equipped with REMOTE ST AR T function, place the LOCAL/REMOTE switch in the LOCAL (Of f) position. 1. Put the ON/OFF switch in the ON position. Close the con- trol circuit breaker (CCB), which will energize the con- trol circuit and the crankcase heaters. 2. Using the HSIO or Building Supervisor , verify that no alarms have[...]

5. As actual SA T approaches CCSR value, stages are re- leased. The minimum time delay between stages on de- creasing demand is 90 seconds. NOTE: Demand for heating has priority and Master Loop will either terminate existing or prevent initiation of Cooling Cycle by issuing a CCSR at the maximum limit. This will cause the CSL to select zero stages [...]

Control Loop Checkout The checkout and adjustment of control loops should only be done by certified Carrier Comfort Network (CCN) technicians. The following checkout procedure is of fered as a guide and presumes the user has obtained basic knowledge of controls through CCN training. TO CHECK OPERA TION OF ANALOG OUTPUTS — The control algorithms [...]

8. Once the submaster loop is adjusted, remove all forced values and proceed with verification and adjustment of master loop. 9. T o check the master loop: Create a demand in the master loop. For example: Force the actual space temperature to a value less than the heat- ing set point or greater than the cooling set point. 10. Observe system (loop)[...]

KEYP AD AND DISPLA Y MODULE (HSIO) IMPOR T ANT : The HSIO (human sensor input/output) keypad and display module is required for initial start-up of these units. All units are shipped in standby mode, and the HSIO must be used to change the unit to run mode. Once the unit is in run mode, the HSIO is not required for normal operation. The keypad and [...]

T able 29 — HSIO Keypad and Display Module Functions and Subfunctions SUB FUNCTION NO. FUNCTIONS Status History Schedule Service Set Point T est 1 Current Alarms Alarms Occupied Mode Override (Unit) Log on and Log off System Set Point T est of Inputs 2 Current Alerts Maintenance Period 1 (Unit) Software V ersion Demand Limit Analog Outputs 3 Curr[...]

T able 30 — V ariable Frequency Drive (VFD) Display DISPLA Y ACTION Fref Not used. Fout Displays the output frequency at which the VFD is cur- rently operating. This is a display only function. The user cannot change this displayed value. lout Displays the level of output current that the VFD is cur- rently producing. This is a display only funct[...]

UNIT CONTROL BOX — V iewed facing compressors, the control box is at the left end of the unit. Incoming power for controls, refrigerant system, and fan system enters through the control box. The control box contains power compo- nents and electronic controls. Outer panels are hinged and latched for easy opening. Remove screws to remove inner pane[...]

MAIN BURNERS (48MP Only) — At the beginning of each heating season, inspect for deterioration or blockage due to corrosion or other causes. Observe the main burner flames. Refer to Main Burners section on page 52. FLUE GAS P ASSAGEW A YS (48MP Only) — The flue col- lector box and heat exchanger cells may be inspected by re- moving heat exchan[...]

Fig. 55 — Charging Chart — Unit 48/50MP62L Fig. 56 — Charging Chart — Unit 48/50MP70M Fig. 57 — Chrging Chart — Unit 48/50MP82N 48[...]

Charging with Unit Of f and Evacuated — Close liquid line service valve before charging. W eigh in charge shown in T able 1. Open liquid line service valve; start unit and allow it to run several minutes fully loaded. Check for a clear sight glass. Be sure clear condition is liquid and not vapor . Complete charging the unit. Charging with Unit Ru[...]

Replace the filter cores whenever the moisture/liquid in- dicator shows moisture in the system. Follow instructions on the packaging for the replacement cores for disassembling and reassembling the filter assem- blies and housings. Liquid Line Service V alve — Located immediately ahead of the filter drier , this valve has a 1 ⁄ 4 -in. flare[...]

CYLINDER HEADS MUFFLER HIGH- PRESSURE SWITCH MOUNTING SPRING (HIDDEN) SIGHT GLASS LOW- PRESSURE SWITCH OIL EQUALIZER LINE CRANKCASE HEA TER RAIL SIGHT GLASS PRESSURE RELIEF VA LV E NOTE: Units 48/50MP62L compressors are pan mounted. Units 48/50MP70M and 82N compressors are mounted on rails. Fig. 60 — 06E Compressors, T ypical Fig. 61 — Motor Pl[...]

PULLEY ALIGNMENT — For proper belt life, the motor and fan pulleys must be properly aligned. T o check, first turn of f unit power . Place a straightedge against the motor and fan pulleys. See Fig. 62. If the pulleys are properly aligned, the straightedge should be parallel to the belts. If they are not parallel, check that the motor shaft and f[...]

CONDENSER-F AN MOTOR PROTECTION — Each condenser-fan motor is internally protected against over - temperature. They are also protected against a severe over - current condition by manual reset, calibrated trip, magnetic circuit breakers on a common circuit. As with the circuit break- ers, do not bypass connections or increase breaker size to corr[...]

Processor Module(s) (PSIO) INPUTS — Each input channel has 3 terminals; 2 are used. OUTPUTS— Output of the PSIO module is 24 vdc or 4 to 20 mA dc. There are 3 terminals; 2 are used. REPLACING DEFECTIVE PSIO MODULES — The re- placement part number is printed on a label on the front of the PSIO module. The replacement module order is config- u[...]

Hot Gas Bypass — An optional hot gas bypass system may be factory installed on circuit no. 1. This system will introduce discharge vapor from the compressor dischar ge line into the distributors and evaporator coil circuits on circuit no. 1 when suction pressures drop to damaging levels. No field adjustments of the hot gas bypass valve should be[...]

TROUBLESHOOTING AND DIAGNOSTICS PROBLEM SOLUTION COMPRESSOR DOES NOT RUN Contactor Open 1. Power off. 1. Restore power . 2. Fuses blown in field power circuit. 2. After finding cause and correcting, replace with correct size fuse. 3. Alarm tripped. 3. Check alarm history on HSIO. 4. No control power . 4. Check secondary fuse(s); replace with corr[...]

TROUBLESHOOTING AND DIAGNOSTICS (cont) PROBLEM SOLUTION COMPRESSOR RUNNING BUT COOLING INSUFFICIENT Suction Pressure Low 1. Refrigerant charge low . 1. Add refrigerant. 2. Head pressure low . 2. Check refrigerant charge. 3. Air filters dirty . 3. Clean or replace filters. 4. Expansion valve power head defective. 4. Replace power head. 5. Indoor c[...]

Refer to Fig. 65 for IGC troubleshooting information. Fig. 65 — IGC Control (Heating) — 48MP Units Only LEGEND IGC — Integrated Gas Unit Controller PIC — Product Integrated Control 58[...]

[...]

P ACKAGED SERVICE TRAINING Packaged Service T raining programs are an excellent way to increase your knowledge of the equip- ment discussed in this manual, including: • Unit Familiarization • Installation Overview • Maintenance • Operating Sequence A large selection of product, theory , and skills programs are available, using popular video[...]

ST ART -UP CHECKLIST MODEL NO.: DA TE: SERIAL NO.: TECHNICIAN: I. PRE-ST ART -UP: M VERIFY THA T UNIT IS LEVEL M VERIFY THA T ALL P ACKING MA TERIALS HA VE BEEN REMOVED FROM UNIT M LOOSEN ALL SHIPPING HOLDDOWN BOL TS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS M VERIFY THA T COMPRESSOR SUSPENSION SPRINGS HA VE BEEN LOOSENED PER INSTRUCTIONS M VER[...]

III. PRELIMINAR Y CHECKLIST ITEMS (cont) CHANGES TO DEF AUL T V ALUES M RECORD ALL CHANGES MADE TO F ACTOR Y DEF AUL T V ALUES IV . ST ART -UP CHECK EV APORA TOR F AN SPEED AND RECORD. CHECK CONDENSER F AN SPEED AND RECORD. AFTER A T LEAST 10 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS: COMP A1 COMP A2 COMP B1 COMP B2 OIL PRESSURE SUCTI[...]

CONTROL CONFIGURA TION KEYBOARD ENTR Y DISPLA Y DESCRIPTION V ALUES IN [ ] INDICA TE F ACTOR Y DEF AUL TS LOG ON Enter password followed by ENTER LOGGEDON Logged on okay F ACT CFG Factory configuration TYPE X Unit type (0 = CV , 1 = V A V) [Default is 1] ENTER x TYPE X V erify unit type and change if necessary . If CV unit, see CV control configu[...]

CONST ANT VOLUME CONTROL CONFIGURA TION KEYBOARD ENTR Y DISPLA Y DESCRIPTION F ACT CONFIG F ANM Fan Mode x ENTER F ANMx Select Fan Mode (Auto. = 0, Cont. = 1) [1] ECONOMIZER Configure Economizer SMG x.x Submaster Gain ENTER SMG 8.0 Set SMG to 8.0 [−7.5[ NOTES: Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or [...]