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48AJ,AK,AW,AY020-060
with Reciprocating Compressor
48EJ,EK,EW,EY024-068
Single Package Rooftop Units
Electric Cooling/Gas Heating
Installation, Start-Up and
Service Instructions
CONTENTS Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
Page
fire extinguishers available for all brazing operations.
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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ROOF CURB — For vertical discharge units, assemble or in- When unit is located adjacent to public walkways, flue assem- stall accessory roof curb in accordance with instructions bly must be at least 7 ft above grade. shipped with this accessory. See Fig. 1-4. Install insulation, ROOF MOUNT — Check building codes for weight distribu- cant strips, roofing, and counter flashing as shown. Ductwork tion requirements. See Fig. 17. Unit operating weight is shown can be installed to roof curb before uni
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3 Fig. 1 — Roof Curb — 48AJ,AK020-030 and 48EJ,EK024-034 Units
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4 Fig. 2 — Roof Curb — 48AJ,AK034-050 and 48EJ,EK038-048 Units
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5 Fig. 3 — Roof Curb — 48AJ,AK060 and 48EJ,EK054-068 Units
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6 NOTES: 1. Unless otherwise specified, all dimensions are to outside of part. 2. Seal strip to be placed covering reference holes. 3. Phantom lines represent seal strip. Total length required is 75 linear ft. 4. If existing seal strip around roof curb seems damaged, replace it. Total length required is 62 linear ft. 5. Five crossrails are field located per dimensions shown and secured using self-tapping screws. 6. 48A and 48E series units will overhang existing “DD” or “DF” roof curbs by 2.98 ″
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7 NOTES: OPERATING CORNER WEIGHT (lbs) 1. Weights include economizer (standard). A B UNIT SIZE WEIGHT* (ft-in.) (ft-in.) (lbs) 1234 2. Center of Gravity. 3 3 48AJ/AK (Low Heat) 020 5142 6- 0 / 3-6 / 1082 1174 1502 1384 8 16 3. Do not locate adjacent units with flue discharge facing economizer 5 11 48AJ (High Heat) 020 5222 6- 1 / 3-6 / 1126 1194 1494 1408 inlet. 16 16 Min Clearances to be: 5 48AJ/AK (Low Heat) 025 5228 5- 9 / 3-8 1103 1103 1511 1511 8 Adjacent Units: 15 ′-0 ″ [4572]. 3 5 48AJ (H
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8 NOTES: OPERATING CORNER WEIGHT (lbs) 1. Weights include economizer (standard). A B UNIT SIZE WEIGHT* (ft-in.) (ft-in.) (lbs) 12 34 2. Center of Gravity. 11 7 48AJ/AK (Low Heat) 035 6004 7-8 / 3-10 / 1380 1209 1595 1820 16 8 3. Do not locate adjacent units with flue discharge facing economizer 1 3 48AJ (High Heat) 035 6164 7-10 / 3-11 / 1447 1251 1607 1859 inlet. 8 16 Min Clearances to be: 5 7 48AJ/AK (Low Heat) 040 6514 7-5 / 3-10 / 1442 1264 1779 2030 16 8 Adjacent Units: 15 ′-0 ″ [4572]. 13
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9 NOTES: 5. Bottom ducts designed to be attached to accessory roof curb. If unit is mounted BASE UNIT WEIGHTS 1. Weights include economizer (standard). on dunnage, it is recommended the ducts must be supported by cross braces as (See Note 6) lbs (kg) done on accessory roof curb. 2. Center of Gravity. 6. Base unit weights include outdoor air hoods and filters (indoor fan motor is not 060 included). Add indoor motor, FIOPs and accessories for total operating weight. 48AJD/AKD 8930 (4051) 3. Do not
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10 NOTES: OPERATING CORNER WEIGHT (lbs) 1. Weights include economizer (standard). A B UNIT SIZE WEIGHT* (ft-in.) (ft-in.) (lbs) 1234 2. Center of Gravity. 3 3 48AW/AY (Low Heat) 020 5182 6- 0 / 3-6 / 1090 1183 1514 1395 8 16 3. Do not locate adjacent units with flue discharge facing economizer 5 11 48AW (High Heat) 020 5262 6- 1 / 3-6 / 1134 1203 1505 1419 inlet. 16 16 Min Clearances to be: 5 48AW/AY (Low Heat) 025 5268 5- 9 / 3-8 1111 1111 1523 1523 8 Adjacent Units: 15 ′-0 ″ [4572]. 1 5 48AW (
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11 NOTES: OPERATING CORNER WEIGHT (lbs) 1. Weights include economizer (standard). A B UNIT SIZE WEIGHT* (ft-in.) (ft-in.) (lbs) 1234 2. Center of Gravity. 11 7 48AW/AY (Low Heat) 035 6044 7- 8 / 3-10 / 1389 1217 1606 1832 16 8 3. Do not locate adjacent units with flue discharge facing economizer inlet. 1 3 48AW (High Heat) 035 6204 7-10 / 3-11 / 1456 1259 1617 1871 8 16 Min Clearances to be: Adjacent Units: 15 ′-0 ″ [4572]. 11 7 48AW/AY (Low Heat) 040 6554 7- 3 / 3-10 / 1451 1271 1790 2042 16 8
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12 NOTES: 5. Base unit weights include outdoor air hoods and filters (indoor fan motor is not BASE UNIT WEIGHTS 1. Weights include economizer (standard). included). Add indoor motor, FIOPs and accessories for total operating weight. (See Note 6) lbs (kg) 6. VAV motor weights include indoor motor, VFD, compressor electric unloaders, VFD 2. Center of Gravity. 060 transducer and associated wiring. 7. Dimensions are in inches [mm]. 48AWD/AYD 8970 (4069) 3. Do not locate adjacent units with flue dis-
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13 NOTES: 1. Weights include economizer (standard). 2. Center of Gravity. 3. Do not locate adjacent units with flue discharge facing economizer inlet. Min Clearances to be: Adjacent Units: 15 ′-0 ″ [4572]. Top of Units: No Overhang. Condenser Coil: 4 ′-0 ″ [1219]. Economizer Side: 6 ′-0 ″ [1829]. Heat Side: 4 ′-0 ″ [1219]. Filter Access Side: 10 ′-0 ″ [3048]. (For removal of evaporator coil.) 4. For smaller service and operational clearances contact Carrier Appli- cation Engineering Department.
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14 NOTES: 1. Weights include economizer (standard). 2. Center of Gravity. 3. Do not locate adjacent units with flue discharge facing economizer inlet. Min Clearances to be: Adjacent Units: 15 ′-0 ″ [4572]. Top of Units: No Overhang. Condenser Coil: 4 ′-0 ″ [1219]. Economizer Side: 6 ′-0 ″ [1829]. Heat Side: 4 ′-0 ″ [1219]. Filter Access Side: 10 ′-0 ″ [3048]. (For removal of evaporator coil.) 4. For smaller service and operational clearances contact Carrier Appli- cation Engineering Department.
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15 NOTES: BASE UNIT WEIGHTS CENTER OF GRAVITY 1. Weights include economizer (standard). % OF TOTAL WEIGHT (See Note 6) lbs (kg) AT EACH CORNER UNIT SIZE Inches Millimeters 2. Center of Gravity. 054 058 064 068 AB AB 1 2 3 4 48EJD/EKD 6805 (3087) 7055 (3200) 7305 (3314) 7480 (3393) 3. Do not locate adjacent units with flue discharge facing econo- 48EJD/EKD054 130.9 46.9 3325 1192 22.4 19.6 27.0 30.9 mizer inlet. 48EJE 7045 (3196) 7295 (3309) 7545 (3422) 7720 (3502) 48EJE054 133.8 47.4 3397 1204 2
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16 NOTES: 1. Weights include economizer (standard). 2. Center of Gravity. 3. Do not locate adjacent units with flue discharge facing econo- mizer inlet. Min Clearances to be: Adjacent Units: 15 ′-0 ″ [4572]. Top of Units: No Overhang. Condenser Coil: 4 ′-0 ″ [1219]. Economizer Side: 6 ′-0 ″ [1829]. Heat Side: 4 ′-0 ″ [1219]. Filter Access Side: 15 ′-0 ″ [4572]. (For removal of evaporator coil.) 4. For smaller service and operational clearances contact Carrier Application Engineering Department.
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17 NOTES: 1. Weights include economizer (standard). 2. Center of Gravity. 3. Do not locate adjacent units with flue discharge facing econo- mizer inlet. Min Clearances to be: Adjacent Units: 15 ′-0 ″ [4572]. Top of Units: No Overhang. Condenser Coil: 4 ′-0 ″ [1219]. Economizer Side: 6 ′-0 ″ [1829]. Heat Side: 4 ′-0 ″ [1219]. Filter Access Side: 15 ′-0 ″ [4572]. (For removal of evaporator coil.) 4. For smaller service and operational clearances contact Carrier Application Engineering Department.
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18 NOTES: BASE UNIT WEIGHTS CENTER OF GRAVITY 1. Weights include economizer (standard). % OF TOTAL WEIGHT (See Note 6) lbs (kg) AT EACH CORNER UNIT SIZE Inches Millimeters 2. Center of Gravity. 054 058 064 068 AB AB 1 2 3 4 48EWD/EYD 6845 (3105) 7095 (3218) 7345 (3332) 7520 (3411) 3. Do not locate adjacent units with flue discharge 48EWD/EYD054 130.9 46.9 3325 1192 22.4 19.6 27.0 30.9 facing economizer inlet. 48EWE 7085 (3214) 7335 (3327) 7585 (3441) 7760 (3520) 48EWE054 133.8 47.4 3397 1204 23.
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A 2 3 B 4 1 48AJ,AK,AW,AY UNITS CENTER OF GRAVITY PERCENT OF TOTAL WEIGHT AT EACH CORNER (%) UNIT Inches Millimeters AB A B 1 2 3 4 48AJ,AKD020 72.4 42.2 1839 1072 21.0% 22.8% 29.2% 26.9% 48AJE020 73.3 42.7 1862 1085 21.6% 22.9% 28.6% 27.0% 48AW,AYD020 72.4 42.2 1839 1072 21.0% 22.8% 29.2% 26.9% 48AWE020 73.3 42.7 1862 1085 21.6% 22.9% 28.6% 27.0% 48AJ,AKD025 69.6 44.0 1768 1118 21.1% 21.1% 28.9% 28.9% 48AJE025 70.1 44.3 1781 1125 21.4% 21.1% 28.6% 29.0% 48AW,AYD025 69.6 44.0 1768 1118 21.1% 21.
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48EJ,EK,EW,EY UNITS CENTER OF GRAVITY PERCENT OF TOTAL WEIGHT AT EACH CORNER (%) UNIT Inches Millimeters AB A B 1 2 3 4 48EJ,EW,EK,EYD024 72.4 42.2 1839 1072 21.0 22.8 29.2 26.9 48EJ,EWE024 73.3 42.7 1862 1085 21.6 22.9 28.6 27.0 48EJ,EW,EK,EYD028 69.6 44.0 1768 1118 21.1 21.1 28.9 28.9 48EJ,EWE028 70.1 44.3 1781 1125 21.4 21.1 28.6 29.0 48EJ,EW,EK,EYD030 69.6 44.0 1768 1118 21.1 21.1 28.9 28.9 48EJ,EWE030 70.1 44.3 1781 1125 21.4 21.1 28.6 29.0 48EJ,EW,EK,EYD034 69.6 44.0 1768 1118 21.1 21.1 28
