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Bryant 574B manual

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Table of contents for the manual

  • Page 1

    SINGLE-PACKAGED GAS HEATING/ELECTRIC COOLING UNITS Model 574B Sizes 024-060 2 to 5 Nominal Tons Low NOx Models Available Form No. PDS 574B.24.1 Single-Packaged Rooftop Products with Energy-Saving Fea- tures and Puron® refrigerant. • Direct Spark Ignition • Low Sound Levels • Up to 81% AFUE • 13 SEER • Variable Speed Blower Standard • F[...]

  • Page 2

    — 2 — Corporate thermostats include the Time Guard ® II anti-short cycle protection circuitry. If a non-corporate thermostat without anti-short cycle protection is used the Time Guard II field in- stalled anti-short cycle kit is recommended. Refrigerant system is designed to provide dependability. Liquid filter dryers are used to promote clean[...]

  • Page 3

    — 3 — ARI* CAPACITIES COOLING CAPACITIES AND EFFICIENCIES UNIT 574B NOMINAL T ONS ST ANDARD CFM NET COOLING CAP A CITIES (Btuh) EER @A‡ SEER† SOUND RA TINGS** (dB) 024040 2 800 24,000 11.0 13.0 72 030040 036060 2-1/2 036060 036090 3 1150 36,000 11.0 13.0 72 042060 042090 3-1/2 11.0 048090 048115 048130 4 1450 45,000 11.0 13.0 78 060090 0601[...]

  • Page 4

    — 4 — ARI* CAPACITIES (cont) HEATING CAPACITIES AND EFFICIENCIES LEGEND AFUE — Annual Fuel Utilization Efficiency NOTE: Before purchasing this appliance, read important energy cost and efficiency information available from your retailer. OUTDOOR SOUND: OCT A VE B AND D A T A — DECIBELS (Lw(A)) UNIT 574B HEA TING INPUT (Btuh) OUTPUT CAP A CI[...]

  • Page 5

    — 5 — PHYSICAL DATA † Required filter sizes sho wn are based on the larger of the ARI (Air Conditioning & Refrigeration Institute) rated cooling air- flo w or the heating airflow v elocity of 300 ft/min for thro waw ay type or 450 ft/min for high-capacity type. Air filter pressure drop for non-standard filters must not exceed 0.08 in[...]

  • Page 6

    — 6 — PHYSICAL DATA (cont) † Required filter sizes shown are based on the lar ger of the ARI (Air Conditioning & Refrigeration Institute) rated cooling air - flo w or the heating airflow v elocity of 300 ft/min for thro waw ay type or 450 ft/min for high-capacity type. Air filter pressure drop for non-standard filters must not exceed[...]

  • Page 7

    — 7 — OPTIONS AND ACCESSORIES Factory-installed options Coil options include Tin-Plated* indoor hairpins, copper/copper and vinyl-coated construction for refrigerant coils. Units are shipped standard with copper tube/aluminum fin construction. See model number nomenclature for coil options. *Tin-Plated indoor coils are built with special hairpi[...]

  • Page 8

    — 8 — FIL TER ACCESS DOOR (HORIZONT AL APPLICA TION ONL Y .) DO NOT REMO VE FROM DO WNFLOW DISCHARGE. REPLACEMENT P ANEL HOLE FOR ECONOMIZER WIRING HARDNESS DOOR LA TCH ANGLE HINGED FIL TER ACCESS DOOR INST ALL FIL TER ACCESS DOOR STICKER ALUMINUM FIL TER RAINHOOD 17 13/32 (442mm) 16 1/4 ” (413mm) 11 13/32 ” (290mm) A99315 Filter Rack A9931[...]

  • Page 9

    — 9 — BASE UNIT DIMENSIONS — 574B024-036 REQ ’ D CLEARANCES FOR OPERA TION AND SERVICING. in. (mm) Evaporator coil access side .................. 3 6 (914) P ower entry side (except for NEC requirements) ......... 3 6 (914) Unit top .......................... 4 8 (1219) Side opposite ducts ..................... 3 6 (914) Duct panel ........[...]

  • Page 10

    — 10 — REQUIRED CLEARANCE FOR OPERA TION AND SERVICING in. [mm] EV AP . COIL ACCESS SIDE..............................................................36.00 [914.0] POWER ENTR Y SIDE ......................................................................36.00 [914.0] (EXCEPT FOR NEC REQUIREMENTS) UNIT T OP ........................................[...]

  • Page 11

    — 11 — ACCESSORY DIMENSIONS C00076 Gasket around outer edge Insulated deck pan Gasket around duct S/A R/A HV A C unit base *Gasketing outer flange Flashing field supplied Roofing material field supplied Cant strip field supplied *Provided with roofcurb Roof Duct work field supplied Insulation (field supplied) Roofcurb* Wood nailer* Gasketing in[...]

  • Page 12

    — 12 — SELECTION PROCEDURE (WITH E XAMPLE) I DETERMINE COOLING AND HEATING REQUIREMENTS AT DESIGN CONDITIONS: Given: Required Cooling Capacity (TC)....................... 34,500 Btuh Sensible Heat Capacity (SHC)......................... 26,000 Btuh Required Heating Capacity............................... 60,000 Btuh Condenser Entering Air Tempe[...]

  • Page 13

    — 13 — PERFORMANCE DATA STANDARD INDOOR ECM MOTOR COOLING CAPACITIES 574B024 COOLING PERFORMANCE T ABLE T emp (F) Outdoor Air Entering Condenser Evaporator Air — CFM / BF 800/0.026 900/0.032 1000/0.04 Evaporator Air — Ewb (F) 62 63* 67 72 62 63* 67 72 62 63* 67 72 75 TC SHC kW 24.0 24.5 26.5 29.1 24.6 25.1 27.1 29.8 25.1 25.5 27.4 30.4 21.9[...]

  • Page 14

    — 14 — PERFORMANCE DATA (cont) STANDARD INDOOR ECM MOTOR COOLING CAPACITIES (cont) See Legend and Notes on page 15. 574B036 COOLING PERFORMANCE T ABLE Temp (F) Outdoor Air Entering Condenser Evaporator Air — CFM/BF 1100/0.06 1225/0.07 1400/0.08 Evaporator Air — Ewb (F) 62 63* 67 72 62 63* 67 72 62 63* 67 72 75 TC SHC kW 36.2 36.8 39.7 43.8 [...]

  • Page 15

    — 15 — PERFORMANCE DATA (cont) STANDARD INDOOR ECM MOTOR COOLING CAPACITIES (cont) 574B048 COOLING PERFORMANCE T ABLE Temp (F) Outdoor Air Entering Condenser Evaporator Air — CFM/BF 1260/0.06 1400/0.06 1600/0.08 Evaporator Air — Ewb (F) 62 63* 67 72 62 63* 67 72 62 63* 67 72 75 TC SHC kW 45.0 45.8 49.6 54.7 46.7 47.3 51.2 56.3 48.1 48.7 52.[...]

  • Page 16

    — 16 — FIL TER SIZE CFM 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 20 X 20 X 1 0.05 0.07 0.08 0.10 0.12 0.13 0.14 0.15 ————————— — — 20 X 24 X 1 —— — — 0.09 0.10 0.11 0.13 0.14 0.15 0.16 —————— — — 24 X 30 X 1 —— — — — — — 0.07 0.08 0.09 0[...]

  • Page 17

    — 17 — 574B COOLING DRY COIL ECM AIRFLOW — SMALL CABINET 574B COOLING DRY COIL ECM AIRFLOW — LARGE CABINET 574B HEATING ECM AIRFLOW — SMALL CABINET 574B HEATING ECM AIRFLOW — LARGE CABINET UNIT SIZE CFM ADJUST PIN SELECT LO PIN NOM PIN HI PIN EXTERNAL STATIC PRESSURE RANGE 0.0 – 0.39 0.4 – 0.69 0.7 – 1.0 0.0 – 0.39 0.4 – 0.69 [...]

  • Page 18

    — 18 — 574B ECM AIR FLOW VS. TEMPERATURE RISE CHART PERFORMANCE DATA (CONT) ECONOMIZER/1-IN. FIL TER PRESSURE DROP (in. wg) UNIT COOLING SIZE RA TED GAS INPUT RA TE (X 1000) AIRFLO W SETTING EAST SELECT ™ (SCFM) CALCULA TED TEMPERA TURE RISE MIN. TEMP RISE MAX TEMP RISE MAX DISCH. TEMP 574B 024 40 800 36.5 20 50 175 574B 030 40 800 36.5 20 50[...]

  • Page 19

    — 19 — TYPICAL PIPING AND WIRING INDOOR THERMOST A T DISCONNECT PER NEC* FROM POWER SOURCE RETURN AIR T OP CO VER FROM GAS LINE *NEC - NA TIONAL ELECTRICAL CODE ROOF RETURN-AIR FLEXIBLE DUCT CEILING CONCENTRIC DIFFUSER BO X (FIELD-SUPPLIED) SUPPL Y -AIR FLEXIBLE DUCT ROOF-MOUNTING CURB C00022 C00023[...]

  • Page 20

    — 20 — APPLICATION DATA Condensate trap — A 2-in. condensate trap must be fi eld supplied. Ductwork — Secure down fl ow discharge ductwork to roof curb . For horizontal discharge applications , attach ductwork to unit with fl anges. T o con vert a unit to down fl ow disc harge — Units are equipped with f actor y-installed inserts in t[...]

  • Page 21

    — 21 — C99024 ELECTRICAL DATA 574B (STANDARD) ELECTRICAL DATA UNIT SIZE 574B V -PH-Hz V O LTA G E RANGE COMPRESSOR OUTDOOR F AN M OTOR INDOOR F AN MO T OR PO WER SUPPL Y Min Max RLA LRA FLA FLA MCA MAX FUSE OR BKR 024 208/230 – 1 – 60 187 253 13.5 61.0 0.8 4.3 22.0/22.0 30/30 030 208/230 – 1 – 60 187 253 16.9 73.0 0.8 4.3 25.0/25.0 30/3[...]

  • Page 22

    — 22 — TYPICAL WIRING SCHEMATIC — 208/230-1-60 SHOWN C01035 YEL BLK YEL BLU YEL YEL BLK BRN I BLK[...]

  • Page 23

    — 23 — TYPICAL WIRING SCHEMATIC — 208/230-3-60 SHOWN C99077 C03025[...]

  • Page 24

    — 24 — OPERATING SEQUENCE Heating — On a call for heating, terminal “ W ” of the thermostat 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 burner sequence begins. This function is performed by the integrated gas control (IGC). The e[...]

  • Page 25

    — 25 —[...]

  • Page 26

    — 26 —[...]

  • Page 27

    — 27 — PACKAGED GAS HEATING/ELECTRIC COOLING UNITS CONSTANT VOLUME APPLICATION HVAC GUIDE SPECIFICATIONS SIZE RANGE: 2 TO 5 TONS, NOMINAL COOLING 40,000 TO 130,000 BTUH, NOMINAL HEATING INPUT BRYANT MODEL NUMBER: 574B PART 1 — GENERAL 1.01 SYSTEM DESCRIPTION Outdoor rooftop mounted, gas heating/electric cooling unit utilizing a scroll compres[...]

  • Page 28

    — 28 — SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE UNIT MUST BE INSTALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS Cancels: NEW Form PDS 574B.24.1 © 2003 Bryant Heating & Cooling Systems, 7310 W. Morris St., Indpls., IN 46231 PRINTED IN U.S.A. Catalog No. 5257-400 8-03 K. Electrical Requirements: All unit power wiring shall enter t[...]