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SAFETY CONSIDERATIONS 

General

 

Improper installation, adjustment, alteration, service, maintenance or use can cause explosion, fire, electrical shock 

or other conditions which may cause personal injury or property damage. Consult a qualified installer; service 

agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual 

instructions packaged with the kits or accessories when installing. 

 

The appliance is not to be used by persons (including children) with reduced physical, sensory or mental 

capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction. Children 

should be supervised not to play with the appliance. 

 

Follow all the safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and 

have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached 

to the unit. Consult local building codes for special requirements. In absence of local codes, it is recommended that 

the USA standard ANSI/NFPA 70, National Electrical Code (NEC), be followed.  

It is important to recognize safety information. This is the safety-alert symbol

.  When you see this symbol on 

the unit and in instructions or manuals, be alert to the potential for personal injury. 

 

Understand the signal words DANGER, WARNING, CAUTION

and NOTE

.

 These words are used with the safety-

alert symbol. DANGER

 

identifies the most serious hazards which 

will 

result in severe personal injury of death. 

WARNING

 

signifies hazards which 

could 

result in personal injury or death. CAUTION is used to identify unsafe 

practices, which 

may 

result in minor personal injury or product and property damage. NOTE is used to highlight 

suggestions which 

will 

result in enhanced installation, reliability, or operation.  

Installation Safety Considerations

 

After the unit has been received and when it is ready to be installed or reinstalled, it must be inspected for damage. 

If damage is detected upon receipt, immediately file a claim with the shipping company or repair. This machine 

must be installed in a location that is not accessible to the public and protected against access by non-authorized 

people. This machine must not be installed in an explosive atmosphere.  

Do not remove the skid or the packaging until the unit is in its final position. The units can also be lifted with slings, 

using only the designated lifting points marked on the unit (labels on the chassis and a label with all unit handling 

instructions are attached to the unit). Use slings with the correct capacity, and always follow the lifting instructions 

on the certified drawings supplied for the unit.  

Safety is only guaranteed, if these instructions are carefully followed. If this is not the case, there is a risk of 

material deterioration and injuries to personnel. These units are not designed to be lifted from above. 

Warranty 

Warranty is based on the general terms and conditions of the manufacturer. Any modifications to the design and/or 

installation made without discussion with Carrier and without advance written agreement will result in the loss of the 

right to any warranty claims and any claim for injury to personnel as a result of these modifications. 

 

 

 

 

 

 

 

 

 

 

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Summary of Contents for 50ZPM

Page 1: ...hese units can be placed on the side of a building or can be placed on a roof without roof curbs Each unit is designed to occupy a minimal space Piping and drain connections are readily accessible The...

Page 2: ...5 Connect Condensate Drain 9 Step 6 Install Electrical Connections 10 PRE START UP 12 START UP 13 Step 1 Check for Refrigerant Leaks 13 Step 2 Start Up Cooling and Make Adjustments 13 Step 3 Refriger...

Page 3: ...NING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used...

Page 4: ...systems Do not use R 22 service equipment or components on Puron refrigerant equipment WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury deat...

Page 5: ...ded 3 1 24 x 36 x 1 Evaporator Fan and Motor Section Fan Quantity Fan Size Diam x L in 12 0 x 10 5 Fan Type Drive Type Motor Type Indoor Motor Factory Speed Setting Low Motor Quantity Maximum HP Maxim...

Page 6: ...ct Opening Center of Gravity mm LBS KG A B C X Y Z 36 279 127 30 12 765 14 0 357 7 13 7 348 14 356 19 483 14 0 356 48 305 139 34 13 867 19 9 506 14 13 9 354 14 356 19 483 16 0 406 60 352 160 42 13 107...

Page 7: ...IVING AND INSTALLATION Step 1 Check Equipment IDENTIFY UNIT The unit model number and serial number are printed on the unit informative plate Check this information against shipping papers INSPECT SHI...

Page 8: ...runoff levels Do not use unit if it has been under water Step 4 Select and Install Ductwork The design and installation of the duct system must be in accordance with the standards of the NFPA for ins...

Page 9: ...ur L brackets are factory installed Supply air duct Two L brackets 9 7 in x 15 5 in Return air duct Two L brackets 14 in x 20 in Fig 2 Factory Installed Duct Flanges Table 1 Minimum Airflow for Safe E...

Page 10: ...d at a slope of at least 1 in 25 4 mm for every 10 ft 3 m of horizontal run Be sure to check the drain tube for leaks Prime trap at the beginning of the cooling season start up Allowable glues for con...

Page 11: ...ads and unit power leads as shown in Fig 7 and Fig 8 Route thermostat wires through grommet providing a drip loop at the panel Connect low voltage leads to the thermostat as shown in Fig 8 The unit tr...

Page 12: ...s have been removed Fig 8 Control Connections Caution FIRE EXPLOSION ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death and or property damage 1 Follow rec...

Page 13: ...own when control setting is satisfied 4 When using an automatic changeover room thermostat place both SYSTEM and FAN switches in AUTO positions Observe that unit operates in Cooling mode when temperat...

Page 14: ...e value Step 4 Indoor Airflow and Airflow Adjustments Table 2 shows wet coil air delivery for horizontal discharge units Table 3 and Table 4 show pressure drops NOTE Be sure that all supply and return...

Page 15: ...1521 1479 1445 1398 1357 2 1729 1740 1702 1670 1626 1585 1548 1508 1467 1424 3 1955 1976 1936 1904 1855 1820 1787 1748 1704 1666 60 1 1773 1727 1671 1624 1571 1510 1437 1383 1336 1273 2 1844 1798 174...

Page 16: ...qualified service personnel should perform maintenance and service procedures that require unit top removal Refer to the following top removal procedures 1 Unplug all three wires from the outdoor fan...

Page 17: ...se and oil with a mild solvent 6 Reassemble a Slip the wheel back in the housing with the hub set screw parented in the correct direction b Install the filler panel c Reinsert the motor assembly in th...

Page 18: ...s If the drain trough is restricted clear it with a plumbers snake or similar probe device Outdoor Fan Adjustment 1 Shut off unit power supply and install lockout tag 2 Remove outdoor fan assembly gr...

Page 19: ...650 psig 4482 kPA Low Pressure Switch The low pressure switch is located in the suction line and protects against low evaporator coil pressure It opens at 54 psig 372 kPA To check switches 1 Turn off...

Page 20: ...gerant components such as filter drier pressure switch metering device coil accumulator or reversing valve Synthetic Roof Precautionary Procedure 1 Cover extended roof working area with an impermeable...

Page 21: ...36 48 4 5 1 3 1 4 8 5 67 1 1 3 1 4 1 FLA Full Load Amps RLA Rated Load Amps LRA Locked Rotor Amps APP Application power at rated power supply voltage MCA Minimum Circuit Amps MOCP Maximum Overcurrent...

Page 22: ...TYPICAL WIRING SCHEMATIC 50ZPM 400V 50Hz Page 22...

Page 23: ...3 3 41 5 0 43 6 1 45 7 2 47 8 3 49 9 4 51 11 53 12 55 13 57 14 8 4 4 43 6 1 45 7 2 47 8 3 49 9 4 51 11 53 12 55 13 57 14 59 15 10 5 6 45 7 2 47 8 3 49 9 4 51 11 53 12 55 13 57 14 59 15 61 16 12 6 7 47...

Page 24: ...6 81 2378 38 35 33 30 27 354 103 98 93 88 83 2440 39 36 34 31 28 364 105 100 95 90 85 2509 40 38 35 32 29 374 107 102 97 92 87 2578 41 39 36 33 30 384 108 103 98 93 88 2647 42 40 37 34 31 394 110 105...

Page 25: ...line filter driers with rated working pressures less than 600 psig Do not leave R 410A refrigerant suction line filter driers in line longer than 72 hours Do not install a suction line filter drier in...

Page 26: ...e leak repair and recharge Air in system Recover refrigerant evacuate system and recharge Condenser coil dirty or restricted Clean coil or remove restriction Dirty drier filter Replace filter Dirty co...

Page 27: ...unit installation is level Check fan wheel and propeller for location in housing orifice and setscrew tightness III START UP ELECTRICAL SUPPLY VOLTAGE ______________________________________ COMPRESSO...

Page 28: ...to discontinue or change at any time specifications or designs without notice and without incurring any obligations Supersedes Version 50ZPM IOM 50HZ 01 Catalog Number 50ZPM IOM 50HZ 02 Effective Dat...

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