Bryant 502A - Manuals - manualsarea.com

Page 2 - TABLE OF CONTENTS; Page; MODEL NUMBER NOMENCLATURE; No factory-installed electric heaters; AB —

2 TABLE OF CONTENTS Page Features/Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1Model Number Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . 2ARI Capacity Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Physical Data . . . . . ....

Page 3 - PHYSICAL DATA; OPERATING WEIGHT DISTRIBUTION AND

3 PHYSICAL DATA LEGEND *Shipping weights include base unit plus packaging.†If components are to be split, additional refrigerant will be needed.**Use Type L copper only. NOTE: If components are to be split, the maximum length of refrigerant tubing to be used is 50 equivalent ft, assuming components ...

Page 4 - FIELD-INSTALLED ACCESSORIES; UNIT

4 FIELD-INSTALLED ACCESSORIES Thermostat and Subbase — Attractive wall-mounted 24-v accessory provides precise temperature control. Automatic andManual changeover models available. A thermostat subbase isavailable that works with Cycle-LOC™ circuitry. If a safetydevice trips, compressor locks out an...

Page 5 - BASE UNIT DIMENSIONS; Unit Component Locations

5 BASE UNIT DIMENSIONS DIMENSIONS (ft-in.) UNIT 502A A B C D E 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 / 4 1-11 5 / 8 1-8 7 / 8 1-7 7 / 8 Unit Component Locations

Page 6 - PERFORMANCE DATA; See Legend on page 7.

6 SELECTION PROCEDURE (with example) I DETERMINE COOLING REQUIREMENTS AT DESIGN CONDITIONS. Given: Gross Cooling Capacity Required (TC) . . . . . . . . . . . . . . . . . . . . . . . . . 39,000 BtuhSensible Heat Capacity (SHC) . . . . . . . . . . . . 30,500 BtuhTemperature of Air Entering Condenser ....

Page 7 - EVAPORATOR FAN PERFORMANCE; belt drive IFM performance, see table on page 8.

7 PERFORMANCE DATA (cont) GROSS COOLING CAPACITIES (cont) LEGEND NOTES: 1. Performance based on nominal condenser airflow listed in physical data table on page 3. 2. SHC is based on 80 F db temperature of air entering the coil. Below 80 F db, subtract (corr factor x cfm) from SHC.Above 80 F db, add ...

Page 8 - BELT DRIVE EVAPORATOR FAN PERFORMANCE; Pulley setting must be adjusted to limit cfm to 450 cfm/ton; CONDENSER FAN PERFORMANCE; Above fan performance is based upon coil and deducted casing

8 PERFORMANCE DATA (cont) BELT DRIVE EVAPORATOR FAN PERFORMANCE (Special Order Only, Pricing and ordering on related price pages.) LEGEND NOTE: Pulley setting must be adjusted to limit cfm to 450 cfm/ton maximum. Unit operation beyond that limit may result in blow-off and condensate problems. CONDEN...

Page 9 - CONTROLS; b. Compressor contactor is energized to star t compressor; Continuous Fan Operation —; The thermostat can be set for; ELECTRICAL DATA; ELECTRIC HEATER DATA

9 CONTROLS OPERATING SEQUENCECooling 1. Thermostat calls for cooling. a. Indoor (evaporator) fan relay is energized and star ts evaporator fan. b. Compressor contactor is energized to star t compressor and condenser fan (up to a 5-minute delay on single-phase units). 2. When room thermostat is satis...

Page 10 - TYPICAL WIRING SCHEMATICS; ELECTRIC HEATER

10 ELECTRICAL DATA (cont) ELECTRIC HEATER STATIC PRESSURE DROP (in. wg) NOTE: Above electric heaters are not UL or CSA listed for use with optional high-static evaporator-fan motor (048, 060 units only). TYPICAL WIRING SCHEMATICS ELECTRIC HEATER UNIT 88EN UNIT 502A MIN CFM UNIT CFM 600 800 1000 1200...

Page 14 - Field Splitting Instructions —; cal codes to ensure proper compliance.; National Electrical Code

14 TYPICAL PIPING AND WIRING APPLICATION DATA OUTDOOR-AIR TEMPERATURE OPERATING LIMITS (F) Field Splitting Instructions — If components are split, maxi- mum length of refrigerant tubing to be used is 50 ft, assumingcomponents are installed in same horizontal plane. Condensermay be mounted up to 12-f...

Page 15 - GUIDE SPECIFICATIONS; INDOOR PACKAGED UNIT

15 GUIDE SPECIFICATIONS INDOOR PACKAGED UNIT HVAC GUIDE SPECIFICATIONS — SECTION 15787 SIZE RANGE: 2 TO 5 TONS, NOMINAL BRYANT MODEL NUMBER: 502A PART 1 — GENERAL 1.01 SYSTEM DESCRIPTION Indoor mounted, electrically controlled packaged horizon-tal cooling unit utilizing a hermetic type scroll compre...

Page 16 - Time Guard

Copyright 2001 Bryant Heating & Cooling Systems Printed in U.S.A. 1-01 Catalog No. 5250-200 SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE UNIT MUST BE INSTALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS GUIDE SPECIFICATIONS (cont) 3. Compressor Cycle Delay: Prevents compressor from restarti...