Instruction/ maintenance manual of the product 502A Bryant
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F or m No . PD S 502A. 24.1 HORIZONT AL INDOOR SINGLE P A CKA GE COOLING UNITS Single P ac kage Coo ling Un its F eaturing: • compac t design • flexibili ty • eas y main tena nce • high qu ali.
2 T ABLE OF CONTENTS Pa g e F eatures/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Model Nu mber Nome nclature . . . . . . . . . . . . . . . . . . . . . . . . . 2 ARI Capacit y Ratings . . . . . . . . . . . . . . . . .
3 PHYSICAL D A T A LEGEND *Shipping weights include base unit plus packaging. † If components are to be split, additional refrigerant will be needed.
4 FIELD-INST ALLED A CCESSORIES Thermo stat and Subbase — Attract i v e wall-mo unted 24-v access or y provi des pr eci se te mperat ure c ontr ol. Auto matic and Manu al changeo ver mo dels av ailab le. A thermostat s ubbase is av ailab le that works w ith Cycle-L OC ™ circuitr y .
5 B ASE UNI T DIMENSION S DIMENSIONS (ft-in.) UNIT 502A ABCDE 024 2-5 2-1 5 / 8 1- 5 3 / 4 1-2 1-1 036 2-4 3 / 4 2-2 1- 5 3 / 4 1-2 1-1 048 2-5 2-3 1-11 5 / 8 1-8 7 / 8 1-7 7 / 8 060 2-4 3 / 4 2-2 3 /.
6 SELECTION PROCEDURE (with e xample) I DETERMINE COO LING REQUIREMENTS A T DESIGN CONDITIONS. Given: Gross C ooling Capacity Required (TC) . . . . . . . . . . . . . . . . . . . . . . . . . 39,00 0 Btuh Sensib le Heat Capaci ty (SHC) . . . . . . . . .
7 PERFORMANCE D A T A (cont) GROSS COOLING CAP A CITIES (cont) LEGEND NO TES: 1. Perf or m ance based on nomin al conden ser airflow l isted in physical da ta table on page 3 . 2. SHC is ba sed on 80 F db te mperature of air e nteri ng the co il. Below 80 F db, subtract (corr factor x cfm) from SHC.
8 PERFORMANCE D A T A (cont) BEL T DRIVE EV APORA T OR F AN PERFORMANCE (Spec ial Or der Only , Pricing an d or dering on related pri ce pages.) LEGEND NO TE: Pulley setting must be adjusted to limit cfm to 450 cfm/ton maximum. Unit operation bey ond that limit may result in blo w-off and condensate problems .
9 CONTR OLS OPERA TING SEQUENCE Cooling 1. The r mosta t call s f or co oling . a. Indoor (e v aporator) f an rela y is energiz ed and starts e vap orato r f an. b . Compr essor contact or is energiz ed to star t compre ssor and conde nser fa n (up to a 5-min ute dela y on single- phase u nits).
10 ELECTRICAL D A T A (cont) ELECTRIC HEA TER ST A TIC PRESSURE DR O P (in. wg) NO TE: Abov e el ectric he aters are not UL or CSA listed f or use with optional hi gh-static ev apora tor-f an motor (048, 060 units only).
11 TYPICAL WIRING SCHEMA TICS (cont) LEGEND AHA — Adjustab le Heat Anticipator C — Contactor Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Com pensator CDT — Compressor Disc.
12 TYPICAL WIRING SCHEMA TICS (cont) LEGEND AHA — Adjustab le Heat Anticipator C — Contactor Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Com pensator CDT — Compressor Disc.
13 TYPICAL WIRING SCHEMA TICS (cont) LEGEND AHA — Adjustab le Heat Anticipator BKR W/A T — Breaks wit h Amp T urns C — Contactor Compressor CC — Cooling Com pensator CLO — Comp ressor L ocko.
14 TYPICAL PIPING AND WIRING APPLICA TION D A T A OUTDOOR-AIR TEMPERA T URE OPERA TING LIMIT S (F) Field Splitting Ins tructions — If c omp onen ts ar e s plit , ma xi- mum length of ref rigerant tubing to be us ed is 50 ft, as suming compon ents are ins talled in same hor iz ontal pl ane.
15 GUIDE S PECIFICA TIONS INDOOR P A CKA GED UNIT HV AC GUIDE SPECIFICA TIONS — SECTION 157 87 SIZE RANGE: 2 T O 5 T ONS, NOMINAL BR Y ANT MODEL NUMBER: 502A PA R T 1 — GENERAL 1.01 SYSTEM DESCRIPTION Indoor mo unted, electrically c ontrolled pac kaged horizon- tal coo ling unit uti lizing a her metic typ e scroll compre ssor .
Copyright 2001 Bryant Heating & Cooling Systems Printed in U.S . A. 1-01 Catalog No. 5250-200 SPECIFICATIONS SUBJE CT TO CHANGE WITHOUT NOTICE UNIT MUST BE INST ALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS GUIDE SPECIFICA TIONS (cont) 3.
An important point after buying a device Bryant 502A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bryant 502A 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 Bryant 502A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bryant 502A you will learn all the available features of the product, as well as information on its operation. The information that you get Bryant 502A will certainly help you make a decision on the purchase.
If you already are a holder of Bryant 502A, 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 Bryant 502A.
However, one of the most important roles played by the user manual is to help in solving problems with Bryant 502A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bryant 502A 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
