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Carrier 50SZ Series, Product Data

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Carrier 50SZ Series Product Data Download Page 21

21

APPLICATION DATA

Condensate trap

⎯

A 2--in. condensate trap must be field supplied.

1” (25mm) MIN.

2” (50mm) MIN.

TRAP

OUTLET

C99013

Ductwork

⎯

Secure downflow discharge ductwork to roof curb.

For horizontal discharge applications, attach ductwork to unit with

flanges.

To convert a unit to downflow discharge

⎯

Units are equipped

with factory--installed inserts in the downflow openings. Remove

the inserts similar to removing an electrical knockout.

Maximum cooling airflow

⎯

To minimize the possibility of con-

densate blow--off from the evaporator, airflow through the units

should not exceed 450 cfm/ton.

Minimum cooling airflow

⎯

The minimum cooling airflow is 350

cfm/ton.

Minimum cooling ambient operating temperature

⎯

All stan-

dard units have a minimum ambient operating temperature of 40

_

F

(4.4

_

C). With accessory low ambient temperature kit, units can op-

erate at temperatures down to 0

_

F (--17.7

_

C).

50SZ

Summary of Contents for 50SZ Series

Page 1: ...ystem is designed to provide dependability Liquid refrigerant strainers are used to promote clean unrestricted opera tion Each unit leaves the factory with a full refrigerant charge Re frigerant service connections make checking operating pressures easier Low Pressure Loss of Charge Switch assures added safety and reliability for the compressor Indoor and outdoor coils are computer designed for op...

Page 2: ...FITS 1 MODEL NUMBER NOMENCLATURE 2 ARI CAPACITY RATINGS 3 PHYSICAL DATA 4 ACCESSORIES 5 DIMENSIONAL DRAWINGS 7 8 SELECTION PROCEDURE 10 PERFORMANCE DATA 11 18 APPLICATION DATA 21 ELECTRICAL DATA 22 TYPICAL WIRING SCHEMATICS 23 24 CONTROLS 25 GUIDE SPECIFICATIONS 26 27 MODEL NUMBER NOMENCLATURE 50SZ 024 Type of Unit 50SZ Single Packaged Heat Pump Unit Electrical Supply 3 208 230 1 60 Nominal Coolin...

Page 3: ...t of Energy test procedures and or ARI Standard 210 240 03 Tested in accordance with ARI Standard 270 95 not listed in ARI NOTES 1 Ratingsarenetvalues reflectingtheeffects ofcirculating fanheat Ratings are based on Cooling Standard 80_F 26 6_C db 67_F 19 4_C wb indoor entering air temperature and 95_F 35_C db outdoor entering air temperature 2 Before purchasing this appliance read important energy...

Page 4: ...9x254 Motor HP RPM 1 3 1050 1 3 1050 1 2 1000 1 2 1075 1 2 1075 1 1040 Return Air Filters in Throwaway 20x24x1 20x24x1 24x36x1 24x36x1 24x36x1 24x36x1 Return Air Filters mm Throwaway 208x610x25 208x610x25 610x914x25 610x914x25 610x914x25 610x914x25 REGISTERED ISO 9001 2000 ELECTRIC HEAT PRESSURE DROP TABLES w c Small Cabinet 024 030 STATIC CFM 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600...

Page 5: ...ol for the system heating and cooling functions Thermostat models are available in both programmable and non programmable versions Controls upgrade kit supplies highand lowpressure safetyprotec tion and protects the unit from operating in unsuitable conditions Crankcase heater provides anti floodback protection for low load cooling applications Rigging kit includes lifting brackets which are inser...

Page 6: ...DISCHARGE REPLACEMENT PANEL HOLE FOR ECONOMIZER WIRING HARDNESS DOOR LATCH ANGLE HINGED FILTER ACCESS DOOR INSTALL FILTER ACCESS DOOR STICKER ALUMINUM FILTER RAINHOOD 11 13 32 17 13 32 16 1 4 EV APORATOR COIL TOP FILTER RACK BEND FLANGE AT 90 SCREW TO DIVIDER WITH 1 IN SCREW BOTTOM FILTER RACK DAMPER BLADE MANUAL OUTSIDE AIR HOOD REPLACEMENT PANEL ECONOMIZER FILTER RACK MANUAL OUTSIDE AIR DAMPER A...

Page 7: ...P OF UNIT 14 00 355 6 DUCT SIDE OF UNIT 2 00 50 8 SIDE OPPOSITE DUCTS 14 00 355 6 BOTTOM OF UNIT 0 50 12 7 NEC REQUIRED CLEARANCES INCHES mm BETWEEN UNITS POWER ENTRY SIDE 42 00 1066 8 UNIT AND UNGROUNDED SURFACES POWER ENTRY SIDE 36 00 914 0 UNIT AND BLOCK OR CONCRETE WALLS AND OTHER GROUNDED SURFACES POWER ENTRY SIDE 42 00 1066 8 Refer to Maximum Operating Clearances A05162 UNIT ELECTRICAL CHARA...

Page 8: ...7 NEC REQUIRED CLEARANCES INCHES mm BETWEEN UNITS POWER ENTRY SIDE 42 00 1066 8 UNIT AND UNGROUNDED SURFACES POWER ENTRY SIDE 36 00 914 0 UNIT AND BLOCK OR CONCRETE WALLS AND OTHER GROUNDED SURFACES POWER ENTRY SIDE 42 00 1066 8 Refer to Maximum Operating Clearances A05126 UNIT ELECTRICAL CHARACTERISTICS UNIT WEIGHT UNIT HEIGHT IN MM A CENTER OF GRAVITY IN MM lb kg X Y Z 50SZ036 208 230 1 60 208 2...

Page 9: ...late d deck pan Short Support CTyp G E F G D E A05308 UNIT SIZE ODS CATALOG NUMBER A IN MM B IN MM C IN MM D IN MM E IN MM F IN MM G IN MM 50SZ024 030 CPRFCURB006A00 8 203 11 279 16 1 2 419 28 3 4 730 30 3 8 771 44 5 16 1126 45 15 16 1167 CPRFCURB007A00 14 356 11 279 16 1 2 419 28 3 4 730 30 3 8 771 44 5 16 1126 45 15 16 1167 50SZ036 060 CPRFCURB008A00 8 203 16 3 16 411 17 3 8 441 40 1 4 1022 41 1...

Page 10: ...tering at 1125 cfm and 67_F 19 4 C ewb entering wet bulb Theunit willprovide atotal cooling capacity of 30 900 Btuh and a sensible heat capacity of 24 800 Btuh For indoor air temperature other than 80_F 26 6 C edb entering dry bulb calculate sensible heat capacity correction as required using the formula found in Note 3 following the cooling capacities tables NOTE Unit ratings are net capacities I...

Page 11: ... C CFM Standard Air AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 700 TC 7 6 7 0 9 6 8 8 11 6 10 7 13 3 12 1 14 1 12 8 17 0 14 9 20 2 20 2 22 7 22 7 23 7 23 7 27 4 27 4 kW 1 42 1 48 1 58 1 65 1 67 1 75 1 82 1 87 1 89 1 98 800 TC 7 6 7 1 9 5 8 7 11 7 10 7 13 4 12 2 14 2 12 9 17 1 15 0 20 3 20 3 22 8 22 8 23 8 23 8 27 5 27 5...

Page 12: ...tandard Air AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 875 TC 9 6 8 9 11 9 10 9 14 4 13 2 16 2 14 8 17 4 15 8 21 6 18 9 25 4 25 4 29 3 29 3 30 6 30 6 35 3 35 3 kW 1 74 1 84 1 94 2 00 2 04 2 18 2 31 2 42 2 46 2 58 1000 TC 9 7 8 9 11 9 11 0 14 4 13 2 16 3 14 9 17 5 15 8 21 7 19 0 25 6 25 6 29 4 29 4 30 8 30 8 36 3 36 3 kW...

Page 13: ...ard Air AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 1050 TC 10 9 10 1 14 0 12 9 17 2 15 8 19 5 17 8 20 8 18 9 25 5 22 4 31 1 31 1 35 5 35 5 37 3 35 1 43 5 43 5 kW 2 03 2 16 2 27 2 34 2 39 2 56 2 75 2 89 2 93 3 12 1200 TC 11 0 10 2 14 2 13 0 17 3 15 9 19 6 17 9 20 9 19 0 25 7 22 5 31 3 31 3 35 8 35 8 35 4 37 6 43 9 43 9 k...

Page 14: ...ir AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 1225 TC 13 8 12 8 17 1 15 7 20 5 18 8 23 1 21 1 24 7 22 4 30 4 26 7 37 1 37 1 39 7 39 7 41 6 41 6 48 2 48 2 kW 2 50 2 63 2 76 2 85 2 91 3 11 3 29 3 44 3 51 3 75 1400 TC 13 9 12 8 17 2 15 8 20 6 18 9 23 3 21 3 24 9 22 6 30 6 26 8 37 2 37 2 40 0 40 0 41 9 41 9 48 2 48 2 kW 2 4...

Page 15: ...ir AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 1400 TC 14 7 13 6 18 6 17 1 23 0 21 1 26 5 24 1 28 2 25 6 3407 30 4 41 9 41 9 47 5 47 5 49 9 49 9 58 2 58 2 kW 2 74 2 90 3 06 3 18 3 23 3 46 3 69 3 86 3 94 4 27 1600 TC 15 1 14 0 19 1 17 6 23 5 21 5 26 9 24 5 28 7 26 0 35 1 30 8 42 4 42 4 48 1 48 1 50 4 50 4 58 8 58 8 kW 2 7...

Page 16: ...r AIR TEMPERATURE ENTERING OUTDOOR COIL F C 10 23 3 0 17 7 10 12 2 17 8 3 20 6 6 30 1 1 40 4 4 47 8 3 50 10 60 15 5 60 15 5 1750 TC 17 8 16 4 22 8 21 0 28 1 25 8 32 3 29 4 34 5 31 3 42 8 37 5 49 2 49 2 56 0 56 0 58 4 58 4 66 4 66 4 kW 3 32 3 51 3 68 3 82 3 90 4 13 4 30 4 48 4 56 4 89 1875 TC 17 7 16 3 22 7 20 9 28 1 25 8 32 3 29 4 34 6 31 4 42 9 37 6 49 2 49 2 55 6 55 6 57 8 57 8 65 2 65 2 kW 3 22...

Page 17: ...gs are net they account for the effects of the evaporator fan motor power and heat 2 Direct interpolation is permissible Do not extrapolate 3 The following formulas may be used Sensible capacity Btuh 1 10 x cfm tldb tedb Wet bulb temperature corresponding to enthalpy air leaving evaporator coil hlwb tlwb total capacity Btuh 4 5 x cfm hlwb hewb Where hewb Enthalpy of air entering evaporator coil 4 ...

Page 18: ...10 20 30 40 50 60 70 10 0 10 17 20 30 40 47 50 60 Outdoor Air Temp Deg F 024 030 036 042 048 060 Based on Indoor Entering Air of 70 F and Rated CFM Building Heat Loss 1000BTUH Unit Integrated Heating Capacity x1000BTUH C00093 50SZ ...

Page 19: ...71 1734 1687 1645 1595 1530 1449 1355 HI Watts 908 887 858 827 804 4767 748 CFM 2000 1944 1876 1811 1735 1647 1555 060 LO Watts 786 769 754 736 722 705 684 658 CFM 2027 1960 1901 1821 1759 1693 1616 1513 MED Watts 873 849 833 815 798 782 763 748 CFM 2095 2026 1962 1887 1817 1748 1679 1583 HIGH Watts 1012 993 981 963 948 927 904 886 CFM 2109 2036 1963 1886 1812 1729 1647 1646 Air delivery values ar...

Page 20: ...EXIBLE DUCT CEILING CONCENTRIC DIFFUSER BOX FIELD SUPPLIED SUPPLY AIR FLEXIBLE DUCT ROOF MOUNTING CURB A99321 INDOOR THERMOSTAT DISCONNECT PER NEC FROM POWER SOURCE RETURN AIR TOP COVER National Electrical Code C99061 50SZ ...

Page 21: ...serts in the downflow openings Remove the inserts similar to removing an electrical knockout Maximum cooling airflow To minimize the possibility of con densate blow off from the evaporator airflow through the units should not exceed 450 cfm ton Minimum cooling airflow Theminimum coolingairflow is350 cfm ton Minimum cooling ambient operating temperature All stan dard units have a minimum ambient op...

Page 22: ...00 110 15 20 72 2 83 3 118 3 132 1 125 150 208 230 3 60 187 253 12 4 88 0 0 9 4 1 20 5 20 5 30 30 3 8 5 10 4 12 33 5 35 5 35 40 7 5 10 20 8 24 1 46 5 50 6 50 60 11 3 15 31 3 36 1 59 6 65 6 60 70 15 20 41 4 47 9 72 3 80 4 80 90 460 3 60 414 506 5 8 44 0 0 6 1 9 9 8 15 5 0 6 0 17 3 20 10 0 12 0 24 8 25 15 0 18 0 32 3 35 20 0 24 1 39 9 40 50SZ 048 208 230 1 60 187 253 18 3 109 0 1 5 4 1 28 5 28 5 40 ...

Page 23: ...a phase imbalance in supply volt age is greater than 2 Use the following formula to determine the percentage of voltage imbalance Voltage imbalance max voltage deviation from average voltage 100 x average voltage EXAMPLE Supply voltage is 230 3 60 AB 228 v BC 231 v AC 227 v 228 231 227 Average Voltage 3 686 3 229 Determine maximum deviation from average voltage AB 229 BC 231 AC 229 Maximum deviati...

Page 24: ...24 WIRING DIAGRAM 208 230 1 60 A06492 50SZ ...

Page 25: ...25 WIRING DIAGRAM 208 230 3 60 A06750 50SZ ...

Page 26: ...26 WIRING DIAGRAM 460 3 60 A06751 50SZ ...

Page 27: ...R and starting IFM after a 1 second delay Should room temperature continue to fall circuit R W is made through second stage thermostat bulb If optional electric heat package is used a relay is energized bringing on first bank of sup plemental electric heat When thermostat is satisfied contacts open deenergizing contactor and relay motors and heaters deenergize The IFM is controlled by a time delay...

Page 28: ...for side discharge will be standard on all sizes 15 Unit insulation conforms to ASHRAE 62P C Fans 1 The indoor fan shall be 3 speed direct drive as shown on equipment drawings 2 Fan wheel shall be made from steel and shall be double inlet type with forward curved blades with corrosion resistant finish Fan wheel shall be dynamically balanced 3 Outdoor fan shall be direct drive propeller type with a...

Page 29: ... or automatic changeover and indoor fan control 7 Low Ambient Package Shall consist of a solid state control and outdoor coil tem perature sensor for controlling outdoor fan motor opera tion which shall allow unit to operate down to 0_F 17 7_C outdoor ambient temperature 8 Filter Rack Kit Shall provide filter mounting for downflow applications 9 Controls Upgrade Kit Shall provide high and low pres...

Page 30: ...10 W Morris St S Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50SZ 4PD Replaces 50SZ 3PD Printed in U S A Edition Date 05 07 50SZ ...

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