Instruction/ maintenance manual of the product 48SS Carrier
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Single-Package Rooftop Products with Energy-Saving Features • direct spark ignition • low sound levels • 81% AFUE on most units • 10 SEER Features/Benefits One-piece heating and cooling units.
Energy-saving, dir ect-spark igni- tion saves gas by operating only when the room ther mostat calls for heating. Standard units are fur nished with natural gas controls. A low- cost, field-installed kit for propane conversion is available for all units.
T able of contents Page Features/Benefits .................................................. 1 , 2 Model Number Nomenclature ........................................ 3 ARI Capacities .................................................... 4 , 5 Physical Data .
ARI* capacities COOLING CAP ACITIES AND EFFICIENCIES UNIT 48SS NOMINAL TONS ST ANDARD CFM NET COOLING† CAP ACITIES SEER† SOUND RA TINGS** (Bels) 018040 1 1 ⁄ 2 600 17,000 10.0 7.4 024040 024060 2 800 24,000 10.0 7.6 030040 030060 030080 2 1 ⁄ 2 1000 29,200 10.
HEA TING CAP ACITIES AND EFFICIENCIES UNIT 48SS HEA TING INPUT (Btuh) OUTPUT CAP ACITY (Btuh) TEMPERA TURE RISE RANGE (°F) AFUE (%) CSE (%) 018040 024040 030040 40,000 32,800 20-50 20-50 20-50 81 81 81 76.5 76.5 76.5 024060 030060 036060 042060 60,000 48,600 25-55 25-55 25-55 25-55 81 81 81 81 77.
Physical data UNIT SIZE 48SS 018040 024040 024060 030040 030060 030080 036060 036080 036100 036120 NOMINAL CAP ACITY (ton) 1 1 ⁄ 2 22 2 1 ⁄ 2 2 1 ⁄ 2 2 1 ⁄ 2 3333 OPERA TING WEIGHT (lb) Withou.
Options and accessories Factory-installed options Unit with base rail provides holes for rigging and forklifts as well as an elevated mounting frame that gives additional structural support for horizontal installations. Ideal for light commercial applications.
Base unit dimensions REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel ........................ 0 Unit top ....................... 3 6 (914) Side opposite ducts .................. 3 6 (914) Compressor access .................. 3 6 (914) (Except for NEC requirements) REQ’D CLEARANCES TO COMBUSTIBLE MA T’L.
48SS018-042 WITH OPTIONAL BASE RAIL REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel ........................ 0 Unit top ...................... 3 6 (914) Side opposite ducts ................. 3 6 (914) Compressor access ................. 3 6 (914) (Except for NEC requirements) REQ’D CLEARANCES TO COMBUSTIBLE MA T’L.
Base unit dimensions (cont) 48SS048,060 WITHOUT OPTIONAL BASE RAIL REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel ....................... 0 Unit top ...................... 3 6 (914) Side opposite ducts ................ 3 6 (914) Compressor access .
48SS048,060 WITH OPTIONAL BASE RAIL REQ’D CLEARANCES FOR SERVICING. in. (mm) Duct panel ........................ 0 Unit top ...................... 3 6 (914) Side opposite ducts ................. 3 6 (914) Compressor access ................. 3 6 (914) (Except for NEC requirements) REQ’D CLEARANCES TO COMBUSTIBLE MA T’L.
Accessory dimensions ROOF CURB DIMENSIONS P ART NUMBER ‘ ‘A ’’ 48SS CPRFCURB001A00 8 9 [203] CPRFCURB002A00 1 1 9 [279] CPRFCURB003A00 14 9 [356] NOTES: 1. Roof curb must be set up for unit being installed. 2. Seal strip must be applied as required for unit being installed.
Selection procedure (with example) I Deter mine cooling and heating requir ements at design conditions: Given: Required Cooling Capacity (TC) ...... 34,000 Btuh Sensible Heat Capacity (SHC) ....... 24,000 Btuh Required Heating Capacity .......... 60,000 Btuh Condenser Entering-Air T emperature .
Performance data COOLING CAP ACITIES 48SS018 TEMP (F) AIR ENT COND EV AP AIR — CFM/BF 525/0.10 600/0.12 675/0.13 Evap Air — Ewb (F) 62 67 72 62 67 72 62 67 72 85 TC 15.8 17.4 19.0 16.0 17.6 19.2 16.1 17.8 19.3 SHC 13.6 1 1.2 8.7 14.4 1 1.8 9.0 15.
COOLING CAP ACITIES (cont) 48SS048 TEMP (F) AIR ENT COND EV AP AIR — CFM/BF 1400/0.08 1600/0.10 1800/0.11 Evap Air — Ewb (F) 62 67 72 62 67 72 62 67 72 85 TC 43.8 48.3 52.9 44.5 49.1 53.7 45.1 49.6 53.9 SHC 39.4 32.7 25.6 41.9 34.6 26.4 44.1 36.4 27.
Performance data (cont) DR Y COIL AIR DELIVERY* — HORIZONT AL DISCHARGE (Deduct 10% for 208 v) UNIT SIZE 48SS MOTOR SPEED 230 AND 460 VOL T HORIZONT AL DISCHARGE External Static Pressure (in.
DR Y COIL AIR DELIVERY* — VER TICAL DISCHARGE (Deduct 10% for 208 v) UNIT SIZE 48SS MOTOR SPEED 230 AND 460 VOL T VERTICAL DISCHARGE External Static Pressure (in.
Performance data (cont) WET COIL PRESSURE DROP UNIT SIZE AIRFLOW (cfm) PRESSURE DROP (in. wg) 018 600 0.069 700 0.082 800 0.102 900 0.1 16 024 600 0.039 700 0.058 800 0.075 900 0.088 030 900 0.088 1000 0.095 1200 0.123 036 1000 0.068 1200 0.088 1400 0.
T ypical piping and wiring Power Wiring Control Wiring Outdoor Airflow Indoor Airflow NEC — National Electrical Code HORIZONT AL DISCHARGE DOWNFLOW DISCHARGE CEILING SUPPL Y -AIR FLEXIBLE DUCT ROO.
Application data Condensate trap — A 2-in. condensate trap must be field supplied. Ductwork — Secure downflow discharge ductwork to roof curb. For horizontal discharge applications, attach duct- work to unit with flanges.
T ypical control wiring schematic, 48SS018-060; 208/230-1-60 LEGEND AW G — American Wire Gage BR — Blower Relay C— Contactor CAP — Capacitor CH — Crankcase Heater COMP — Compressor Motor C.
T ypical control wiring schematic, 48SS030-060; 208/230-3-60 LEGEND AW G — American Wire Gage BR — Blower Relay C— Contactor CAP — Capacitor CH — Crankcase Heater COMP — Compressor Motor C.
T ypical control wiring schematic, 48SS036-060; 460-3-60 LEGEND AW G — American Wire Gage BR — Blower Relay C— Contactor CAP — Capacitor CH — Crankcase Heater COMP — Compressor Motor CR .
Electrical data UNIT 48SS V -PH-HZ VOL T AGE RANGE COMPRESSOR COND FA N MOTOR INDOOR FA N POWER SUPPL Y A W G6 0C MIN WIRE SIZE† MAX WIRE LENGTH (ft) Min Max RLA LRA FLA FLA MCA MOCP* 018 208/230-1-60 187 253 7.6 45 0.7 1.8 12.0 15 14 75 024 208/230-1-60 187 253 12.
Controls Sequence of operation Heating — On a call for heating, ter minal ‘‘W’’ of the ther- mostat is energized, starting the induced-draft motor . When the hall-effect sensor on the induced-draft motor senses that it has reached the required speed, the bur ner sequence be- gins.
Guide specifications Packaged Heating/Cooling Units Constant V olume Application HV AC Guide Specifications Size Range: 1 1 ⁄ 2 to 5 T ons, Nominal Cooling 40,000 to 140,000 Btuh, Nominal Input Heating Carrier Model Number: 48SS Part 1 — General 1.
I. Operating Characteristics: 1. Unit shall be capable of starting and running at 125 F ambient outdoor temperature per maxi- mum load criteria of ARI Standard 210/240. 2. Compressor with standard controls shall be ca- pable of operation in cooling down to 40 F am- bient outdoor temperature.
Carrier Corporation • Syracuse, New Y ork 13221 9-98 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 Ta b 1 a 6 a Page 28 Catalog No. 524-890 Printed in U.
An important point after buying a device Carrier 48SS (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 48SS yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 48SS - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 48SS you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 48SS will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 48SS, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 48SS.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 48SS. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 48SS along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
