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®
ROOMTOP
50AH024-096
Horizontal Indoor Single-Package Cooling Units
®
with PURON Refrigerant (R-410A)
Installation, Start-Up, and
Service Instructions
CONTENTS system. If unit is split, the condensing section must be mounted
horizontally.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
All units are designed to be ducted on both the condenser
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
and evaporator sides. Centrifugal blowers ar
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50AH AC 048 5 – – – – 2 1 XX Factory-Installed Options 50AH – Horizontal, Indoor Packaging Single-Package Cooling Unit 1 – Domestic 2 – Export Compressor Options Design Changes AC – Air Cooled 2 – R-410A Original Design Unit Size - Nominal Tons 024 –2 060 –5 Economizer and Hot Gas Options 036 – 3 072 – 6 – – None 048 – 4 096 – 8 A – Hot Gas Bypass† B – Hot Gas Reheat† Voltage Description C – Air-Side Economizer with Controls 3 – 208/23
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a50-8547 3 OPERATING WEIGHT DISTRIBUTION WEIGHT OF CORNER (lb) UNIT 50AH ABCD E F G H 024 87111 88 113 143 136 105 100 036 87111 89 114 144 138 106 101 048 91 116 92 118 152 145 111 106 060 91 117 93 119 153 146 112 107 FRONT 3 7/8 44 1/8 38 1/8 RIGHT 1 15/16 G E B D 1 RA COND EVAP SECTION SECTION 36 IN. SERVICE 62 CLEARANCE CLEARANCE HOLE FOR DETAIL "A" OSA 3/8" HANGING ROD REAR TYP 8 PLS 1 26 IN. SERVICE H F A C DETAIL A CLEARANCE 2 1/4 LEFT 48 42 3 1/2 ISOMETRIC VIEW TOP QUICK FILTER COMPRESS
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a50-8548 4 3 7/8 6 1/16 243/4 1 15/16 44 1/8 38 1/8 38 1/2 12 16 1/8 3 13/16 5 15/16 1 1/2 13/4 3 1/4 183/4 6 1/8 64 1/2 LEGEND OSA — Outside Supply Air RA — Return Air 5 7/8 5 7/8 6 7/16 NOTES: 13 5/8 3 1/4 2 1/4 1. Dimensions are in inches. 2. Economizer weight is 180 lb. 0 lbs. 123/8 9 5/16 Fig. 3 — Unit Dimensions — 50AH024-060 Units with Factory-Installed Air-Side Economizer
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a50-8549 5 OPERATING WEIGHT DISTRIBUTION WEIGHT OF CORNER (lb) UNIT 50AH ABCD E F G H 072 125 128 149 152 126 128 188 192 096 126 129 149 153 139 142 208 212 3 7/8 FRONT 61 1/8 43 1/8 1 15/16 36 IN. SERVICE CLEARANCE RIGHT G E B D RA 1 COND EVAP SECTION SECTION 72 1/2 CLEARANCE HOLE FOR 3/8" HANGING ROD TYP 8 PLS DETAIL "A" LEFT OSA REAR DETAIL A 1 H F A C 26 IN. SERVICE 2 1/4 65 47 CLEARANCE 3 1/2 TOP 36 IN. SERVICE CLEARANCE ISOMETRIC VIEW ELECTRICAL CONNECTIONS 112 TYP FILTER ACCESS 22 1/8 21
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a50-8550 6 6 1/16 3 7/8 1 15/16 61 1/8 43 1/8 29 3/4 72 1/2 42 1/2 12 5 15/16 1 1/2 3 1/4 LEGEND 6 7/16 5 7/8 OSA — Outside Supply Air 13 7/16 22 1/8 21 7/16 RA — Return Air 16 1/16 3 1/4 2 1/4 NOTES: 1. Dimensions are in inches. 18 15/16 2. Economizer weight is 200 lbs. 18 3/4 10 7/8 6 5/8 70 1/2 Fig. 5 — Unit Dimensions — 50AH072,096 Units with Factory-Installed Air-Side Economizer
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CENTER OF GRAVITY DIMENSIONS (in.) UNIT 50AH AB 024 29.0 25.6 036 28.8 26.0 048 29.0 27.0 060 28.8 26.8 072 59.3 31.2 096 60.0 31.5 NOTE: Fasten threaded rods through holes in end frames as shown. Use 4 rods on each side of unit for a total of 8. CAUTION All panels must be in place when rigging. Fig. 6 — Rigging Details Table 1 — Physical Data UNIT 50AH 024 036 048 OPERATING WEIGHT (lb) Base Unit 903 910 952 Evaporator/Condenser Sections 399/484401/489 417/515 SHIPPING WEIGHT (lb)* 1036 1043 108
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Table 1 — Physical Data (cont) UNIT 50AH 060 072 096 OPERATING WEIGHT (lb) Base Unit 960 1214 1283 Evaporator/Condenser Sections 421/519 554/634 556/701 SHIPPING WEIGHT (lb)* 1093 1647 1716 REFRIGERANT TYPE R-410A Operating Charge (lb-oz)† 8-8 6-6 6-6 COMPRESSOR — TYPE Scroll Quantity...Model 1...ZPKP51K5E 2...ZP31K5E 2...ZP38K5E Oil (oz) 42 25 42 HPS Setting (psig) Cutout 650 ± 7 Reset Manual Reset LPS Setting (psig) Cutout 75 ± 7 Reset 100 ± 7 CONDENSATE DRAIN CONNECTION 7 Size (in.)...Type /
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Condensing section must be located in same plane as, or Perform the following procedure: above, evaporator section to maintain the liquid refrigerant seal 1. For condensing section, hand thread the female halves of at the expansion device. This permits expansion device to feed the self-sealing couplings (supplied with the interconnect liquid refrigerant to evaporator coil properly. To split sections tubing kit) onto the male couplings (factory supplied and (some of the following steps may be eli
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1 of the tubing. Use a / -in. hole to mount the valve. Clean section is more than 50 ft above the evaporator, consult 4 and debur the tubing before doing any brazing to ensure Carrier for specific refrigeration components. that no chips or debris are left in the refrigerant circuit. Step 8 — Make Electrical Connections — Con- Remove the Schrader valve cap and core before doing nect power wiring to junction box located on unit side near any brazing. control box access panel. All wiring must com
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Table 2B — Electrical Data — Upgrade 1 Evaporator Motor with Standard Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 1) (Standard) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 1 1 024 208/230-1 187 254 1 13.5 58.0 / 1.7 / 1.7 20.3 35 3 3 1 1 208/230-1 187 254 16.7 79.0 / 2.5 / 1.7 25.1 40 2 3 036 1 1 208/230-3 187 254 1 10.4 73.0 / 1.8 / 1.3 16.1 25 2 3 1 1 460-3 414 508 5.8 38.0 / 0.9 / 0.7 8.8 15 2 3 1 1 2
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Table 2D — Electrical Data — Upgrade 3 Evaporator Motor with Standard Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 3) (Standard) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 024 208/230-1 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 1 208/230-1 187 254 16.7 79.0 1 3.2 / 1.7 25.8 40 3 036 1 208/230-3 187 254 1 10.4 73.0 1 2.4 / 1.3 16.7 25 3 1 460-3 414 508 5.8 38.0 1 1.2 / 0.7 9.1 15 3 1 208/230-1 187 254 19.
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Table 2F — Electrical Data — Upgrade 1 Evaporator Motor with Upgrade 1 Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 1) (Upgrade 1) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 024 208/230-1 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 208/230-1 187 254 N/A N/A N/A N/A N/A N/A N/A N/A 036 208/230-3 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 460-3 414 508 N/A N/A N/A N/A N/A N/A N/A N/A 1 1 208/230-1 187 254 19.9 109.
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Table 2H — Electrical Data — Upgrade 3 Evaporator Motor with Upgrade 1 Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 3) (Upgrade 1) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 024 208/230-1 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 208/230-1 187 254 N/A N/A N/A N/A N/A N/A N/A N/A 036 208/230-3 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 460-3 414 508 N/A N/A N/A N/A N/A N/A N/A N/A 1 208/230-1 187 254 19.9 109.0
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Table 2J — Electrical Data — Upgrade 1 Evaporator Motor with Upgrade 2 Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 1) (Upgrade 2) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 024 208/230-1 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 208/230-1 187 254 N/A N/A N/A N/A N/A N/A N/A N/A 036 208/230-3 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 460-3 414 508 N/A N/A N/A N/A N/A N/A N/A N/A 1 3 208/230-1 187 254 19.9 109.
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Table 2L — Electrical Data — Upgrade 3 Evaporator Motor with Upgrade 2 Condenser Motor FAN MOTORS VOLTAGE COMPRESSOR POWER SUPPLY Evaporator Condenser RANGE UNIT V-PH (Upgrade 3) (Upgrade 2) 50AH (60 Hz) Min Ckt MOCP Min Max QTY RLA LRA Hp FLA Hp FLA Amps Amps 024 208/230-1 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 208/230-1 187 254 N/A N/A N/A N/A N/A N/A N/A N/A 036 208/230-3 187 254 1 N/A N/A N/A N/A N/A N/A N/A N/A 460-3 414 508 N/A N/A N/A N/A N/A N/A N/A N/A 3 208/230-1 187 254 19.9 109.0
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Table 4 — Condenser-Fan Performance EXTERNAL STATIC PRESSURE (in. wg) UNIT SIZE CFM 0.0 0.1 0.2 0.3 0.4 0.5 50AH RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp RpmBhp 024 1700 247 0.07 255 0.07 262 0.08 269 0.08 277 0.08 2840.09 036 2000 276 0.11 2820.11 289 0.12 295 0.12 301 0.12 307 0.13 048 2500 251 0.17 305 0.18 357 0.22 408 0.27 456 0.32 501 0.37 060 3000 287 0.22 334 0.28 378 0.33 421 0.38 464 0.43 505 0.49 072 5200 367 0.68 438 0.89 464 0.98 490 1.07 516 1.16 542 1.25 096 6400 448 1.26 524 1.59 546 1
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BELT SPAN Blower Belt Adjustment — Inspect blower belt for wear, proper belt tension, and pulley alignment as conditions require or at the beginning of each heating and air conditioning season. Make sure that fan shafts and motor shafts are parallel and a50-7135tf level. The most common causes of misalignment are nonparal- lel shafts and improperly located sheaves. Where shafts are not parallel, belts on one side are drawn tighter and pull more than their share of the load. As a result, these be
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Copyright 2010 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500057-01 Printed in U.S.A. Form 50AH-14SI Pg 20 5-10 Replaces: 50AH-12SI
