Bryant 581B manual

F or m No . PDS 581B .36.5 COMME RCIAL SINGLE P A CKA GE R O OFT OP GAS HEA T/E LECTRIC COOL ING UNITS Bryant ha s designed th e Dura P ac Plus seri es based on custom er needs and req uests to be the most effic ient and rel i- able ever . FEA TURES /BENEF ITS • Effic ient rooftop li ne for co oling usin g scroll compre ssor technol og y • Effi[...]

2 FEA TURES/BENEFITS (cont) BALL BEARING, PERMANENTL Y - LUBRICA TED MOT ORS PREMIUM QUALITY SCROLL COMPRESSORS DIMPLED HEA T EXCHANGERS BEL T DRIVEN EV APORA TOR F ANS F ACT OR Y -INST ALLED OPTIONAL CONVENIENCE OUTLET REFRIGERA TION SYSTEM PROTECTION F ACTORY -INST ALLED OPTIONAL DISCONNECT SWITCH FULL Y MODULA TING ECONOMIZER (OPTION OR ACCESSOR[...]

3 FEA TURES/BENEFITS (cont) Thru-the-Bottom Service Connection Capab ility come s standard with the ro oftop unit to allow powe r and control wiring to be routed th rough the unit ’ s basepan, thereb y minimiz ing roof penetr ations (to prev ent water leaks). Both po wer and contro l connec tions are mad e on the sam e side of the un it to simp l[...]

4 FEA TURES/BENEFITS (cont) INDOOR AIR QU ALITY (IA Q) The Qua lity of Building Air i s Impr oved as the Dur aP a c Plu s ser ies u tili zes ce r tai n key f eat ures that assi st in im proving indoor air qu ality . A sl oped condens ate pan eliminat es possib le biologi cal gro wth in th e rooftop unit. A f ace-split e vapo rator coi l (090-150 s [...]

5 ARI* CAP A CITIES LEGEN D *Air-Conditioning & Refrigeration Institute. † Applies o nly to units w ith capacit y of 65,000 Btuh or less. **The IP L V is no t applica ble to single-c ompressor units. NO TES: 1. Rated in acc ordance wi th ARI Standar d 210/24 0 (size 036 -120 units) or 360 (size 150 u nits) and 2 70 (size 036 -150 uni ts). 2. [...]

6 OPTIONS AND A CCESSORIES *Indicates a f actor y-installed option. † Indicates a field-installed accessor y . ITEM OPTION* A CCESSOR Y † P erfect Humidity ™ Dehumidif ication P ackage X Inte grated Econ omizer — Durab lade XX Inte grated Econ omizer — EconoMi$er (gear driven) XX EconoMi $er with P ower E xhaust (V er tical O nly) X P owe[...]

7 OPTIONS AND A C CESSORIES (cont) CONTROLLER BAROMETRIC RELIEF DAMPERS OUTDOOR AIR TEMPERA TURE SENSOR GEAR-DRIVEN DAMPER ACTUA TOR ECONOMI$ER PLUG UNIT MOUNTED DISCONNECT ECONOMI$ER F ac tory-inst alled, internally-mo unted, NEC (National Electrical Code) and UL (Underwriters ’ Laboratories) approved non-fused s witch provides unit pow er shuto[...]

8 OPTIONS AND A C CESSORIES (cont) MINIMUM POSITION OPEN 3 1 T P P1 T1 4 2 5 S S O D C TR B REV .B 198818A % H U M I D I T Y 90 7 0 60 30 10 D C B A 60 65 70 75 55 50 85 8 0 DAMPER DAMPER CLOSED OPEN OUTDOOR TEMP . ° F R E V . 97 -3 672 CW – SETPOINTS – CCW CONT A CTS SHOWN IN HIGH ENTHA LPY R U S H A T 24 V A C 3 m A M IN . A T 1 1 VD C CONT [...]

9 PHYSICAL D A T A LEGEND *Single ph ase/three ph ase. † Indicates au tomatic reset . **581 B 072 unit siz e 036-072 (72,000 Btu heat input) ha ve 2 burners . 581B 115 unit size 036-0 72 (115,000 Btu he at input) ha ve 3 b ur ners. 581B 150 unit size 048-0 72 (150,000 Btu he at input) ha ve 3 b ur ners. †† An LP kit is av ailab le as an acces[...]

10 PHYSIC AL D A T A (cont) LEGEND *Single ph ase/three ph ase. † Indicates au tomatic reset . **581 B 072 unit siz e 036-072 (72,000 Btu heat input) ha ve 2 burners . 581B 115 unit size 036-0 72 (115,000 Btu he at input) ha ve 3 b ur ners. 581B 150 unit size 048-0 72 (150,000 Btu he at input) ha ve 3 b ur ners. †† An LP kit is av ailab le as[...]

11 PHYSIC AL D A T A (cont) LEGEND *W eight of 14-in. roof curb . † Rollout s witch lock out is manuall y reset by inte rr upting po wer to unit or reset tin g ther mos tat. NO TE: High-static motor not av ailable on size 150 units . UNIT SIZE 581B 090 102 120 150 NOMINAL CAP A CITY (tons) 7 1 / 2 8 1 / 2 10 12 1 / 2 OPERA TING WEIGHT (lb) Unit 8[...]

12 PHYSIC AL D A T A (cont) LEGE ND *W eight of 14-in. roof curb . † Rollout s witch lock out is manuall y reset by inte rr upting po wer to unit or reset tin g ther mos tat. NO TE: High-static motor not av ailable on size 15 0 units . UNIT SIZE 581B HEA T 090 102 120 1 50 FURNA CE SECTION Rollout Switch Cutout T emp † 195 195 195 195 Burner Or[...]

13 B ASE UNIT DIME NSIONS UNIT 581B ST ANDARD UNIT WEIGHT DURABLADE EC ONOM IZE R WEIGHT EC ONOM I$E R WEIGHT CORNER WEIGHT (A) CORNER WEIGHT (B) CORNER WEIGHT (C) CORNER WEIGHT (D) Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb K g 036 530 240 34 15.4 47 21.3 127 57.6 122 55.3 1 38 62.6 143 64.9 048 540 245 34 15.4 47 21.3 129 58.5 124 56.2 1 41 64.0 146 [...]

14 B ASE UNIT DI MENSIONS (cont) UNIT 581B ST AND ARD UN IT W EIG HT DURABLADE ECONOM IZER W EIGHT ECONOM I$ER WEIGHT CORNER WEIGHT (A) CORNER WEI GHT ( B) CORNER WEIGHT (C) CORNER WEIGHT (D) “ H ”“ J ”“ K ”“ L ” Lb Kg Lb Kg L b Kg Lb Kg Lb Kg Lb Kg ft-in. mm ft-in. mm ft-in. mm ft-in. mm ft-in. mm 090 870 39 5 44 20 62 28.1 189 86 [...]

15 A CCES SOR Y DIMENSIONS — 58 1B036-072 UNIT SIZE 581B “ A ” ROOF CURB A CCESSOR Y 036-072 1 ′ -2 ″ [356] CRRFCURB001A00 2 ′ -0 ″ [610] CRRFCURB002A00 NO TES: 1. Roof curb a ccessor y is shippe d disassembled. 2. Insul ated pane ls. 3. Dimensions in [ ] are in millimeters. 4. Roof curb: galvanized stee l. 5. Attac h ductwork to curb[...]

16 A CCES SOR Y DIMENSIONS — 58 1B090-150 CONNECT OR PKG. ACCY . BC D AL T DRAIN HOLE “ E ” GAS “ F ” PO WER “ G ” CONTROL CRBTMPWR001A00 2 ′ -8 7 / 16 ″ [827] 1 ′ -10 15 / 16 ″ [583] 1 3 / 4 ″ [44.5] 3 / 4 ″ [19] NPT 3 / 4 ″ [19] NPT) 1 / 2 ″ [12.7] CRBTMPWR002A00 1 1 / 4 ″ [31.7] CRBTMPWR003A00 1 / 2 ″ [12.7] NPT[...]

17 SELECTION PROCEDURE (With 581B048 Exam ple) I DETERMINE COOLING AND HEA T ING REQUIRE- MENTS A T DESIGN CONDITIONS. Given: Required Cooling Capa city (TC) . . . . . . . . . . 44,600 Btu h Sensib le Heat Capacity (SHC). . . . . . . . . . . . 32,000 Btu h Required Heating Capa city . . . . . . . . . . . . . . 85,000 Btuh Condense r Entering-Air T [...]

18 PERFORMANCE D A T A COOL ING CA P A CITI ES Standard Ratings LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where h ewb = Enthalpy of air entering indoor coil. 3. The SHC is based on 80 F edb temper ature of air entering ev ap- orator coil. Below 80 F db , subtract (corr f[...]

19 PERFORMANCE D A T A (cont) COOLING CAP A CITIES (cont) Standard Ratings LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where h ewb = Enthalpy of air entering indoor coil. 3. The SHC is based on 80 F edb temper ature of air entering ev ap- orator coil. Below 80 F db , subtr[...]

20 PERFORMANCE D A T A (cont) COOLING CAP A CITIES (cont) Standard Ratings LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where h ewb = Enthalpy of air entering indoor coil. 3. The SHC is based on 80 F edb temper ature of air entering ev ap- orator coil. Below 80 F db , subtr[...]

21 PERFORMANCE D A T A (cont) COOLING CAP A CITIES (cont) Standard Ratings LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where h ewb = Enthalpy of air entering indoor coil. 3. The SHC is based on 80 F edb temper ature of air entering ev ap- orator coil. Below 80 F db , subtr[...]

22 PERFORMANCE D A T A (cont) COOLING CAP A CITIES, UNITS WITH PERFECT HUMIDITY ™ OPTION LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where: h ew b = Enthalp y of air entering ev aporator coil. 3. The SHC is bas ed on 80 F edb temperature of air entering ev apo- rator coi[...]

23 PERFORMANCE D A T A (cont) COOLING CAP A C ITIES, UNITS WIT H PERFECT HUMIDITY ™ OPTION (cont) LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where: h ew b = Enthalp y of air entering ev aporator coil. 3. The SHC is bas ed on 80 F edb temperature of air entering ev apo- [...]

24 PERFORMANCE D A T A (cont) COOLING CAP A C ITIES, UNITS WIT H PERFECT HUMIDITY ™ OPTION (cont) LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where: h ew b = Enthalp y of air entering ev aporator coil. 3. The SHC is bas ed on 80 F edb temperature of air entering ev apo- [...]

25 PERFORMANCE D A T A (cont) COOLING CAP A C ITIES, UNITS WIT H PERFECT HUMIDITY ™ OPTION (cont) LEGEND NO TES: 1. Direct interpolation is perm issib le. Do not e xtrapolate. 2. The f ollowing f or mulas ma y be used: Where: h ew b = Enthalp y of air entering ev aporator coil. 3. The SHC is bas ed on 80 F edb temperature of air entering ev apo- [...]

26 PERFORMANCE D A T A (cont) F AN PERFORMANC E — VER TICAL DISCHARGE UNITS LEGEN D NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 2.) 2. Motor drive range is 7 60 to 1090 r pm for standard motor ; 10 75 to 1455 rpm for high-static m otor . All o ther r pms require a field-su pplied dr ive. 3. V alues i nclude losse[...]

27 PERFORMANCE D A T A (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEN D NO TES: 1. Boldface indic ates f ield- supp lied driv e requi red. ( See Note 3.) 2. indicates field-sup plied m otor and d rive requ ired. 3. Motor drive range is 8 40 to 1185 r pm for standard motor ; 10 75 to 1455 rpm for high-static m otor . All o ther r p[...]

28 PERFO RMANC E D A T A — (con t) F AN PERFOR MANCE — VERTI CAL DISCHARGE UNITS (cont) L EGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicates field-sup plied m otor and d rive requ ired. 3. Motor drive range is 10 20 to 14 60 r pm f or single-p hase st andard motors, 1120 to 1585 for 3-phase stan[...]

29 PERFORMANCE D A T A (cont) FAN PERFORMANCE — VERTICAL DISCHARGE UNITS (cont) LEGEN D NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicates field-sup plied m otor and d rive requ ired. 3. Motor drive range i s 1120 t o 1585 r pm for standard motors, 130 0 to 1685 r pm for h igh-static motors. All o ther [...]

30 PERFORMANCE D A T A (cont) F AN PERFOR MANCE — VERTI CAL DISCHARGE UNITS (cont) LEGEN D NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indica tes field- supplied mo tor an d drive requir ed. 3. Mot or driv e rang e is 840 t o 1085 rpm f or standar d moto rs; 860 to 1080 rpm for high-static m otors. All oth[...]

31 PERFORMANCE D A T A (cont) F AN PERFOR MANCE — VERTI CAL DISCHARGE UNITS (cont) LEGEN D NO TES : 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicates field-sup plied m otor and d rive requ ired. 3. Motor drive range is 840 to 1085 r pm for standard motors, 860 to 108 0 rpm for high-static m otors. All other r [...]

32 PERFORMANCE D A T A (cont) F AN PERFOR MANCE — VERTI CAL DISCHARGE UNITS (cont) LEGEN D NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicates high sta tic moto r and dr ive require d. 3. Motor drive range is 860 to 108 0 r pm for standar d mot ors; 830 to 1130 r pm for high-static m otors. All other r p[...]

33 PERFORMANCE D A T A (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE U NITS LEGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. Mo tor dr ive range is 760 to 1090 r pm for stand ard motor s; 1075 to 14 55 r pm for high-static m otors. All other r pms r equire a f ield-supp lied dr ive. 3. V alues in clude l[...]

34 PERFORMANCE D A T A (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicate s field-suppl ied moto r and dr ive require d. 3. Mo tor dri ve range is 840 to 1185 r pm for stand ard unit s; 1075 to 14 55 r pm for high-st atic motors. A ll othe[...]

35 PERFORMANCE D A T A (cont) F AN PERFORMANCE — HORIZONT AL DISCHARGE UNITS (cont) LEGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicate s field-suppl ied moto r and dr ive required. 3. Mo tor dri ve r ange is 1020 to 14 60 r pm for single-pha se standard units, 1120 to 1585 for 3-phase standard un [...]

36 PERFORMANCE D A T A (cont) FAN PERFORMANCE — HORIZONTAL DISCHARGE UNITS (cont) LEGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicate s field-suppl ied moto r and dr ive require d. 3. Moto r driv e rang e is 1120 to 1585 rpm fo r stan dard mot ors; 130 0 to 1685 rpm for high-static m otors. All oth[...]

37 PERFORMANCE D A T A (cont) F AN PERFORMANCE — HORIZONT AL DISCHARGE UNITS (cont) LEGEND NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indicate s field-suppl ied moto r and dr ive required. 3. Mo tor dri ve range is 840 to 1085 r pm for standar d motors. All ot her r pms requir e a field -supplied dr ive. [...]

38 PERFORMANCE D A T A (cont) F AN PERFORMANCE — HORIZONT AL DISCHARGE UNITS (cont) LEGEND NO TES: 1. B oldf ace in dicates field- supplied dr ive required. (See Note 3.) 2. indicate s field-suppl ied moto r and dr ive require d. 3. Mo tor dri ve range is 840 to 1085 r pm for standar d motors. All ot her r pms requir e a field -supplied dr ive. 4[...]

39 PERFORMANCE D A T A (cont) F AN PERFORMANCE — HORIZONT AL DISCHARGE UNITS (cont) LEG END NO TES: 1. Boldface indic ates f ield- supp lied driv e requ ired. ( See Note 3.) 2. indica tes h igh sta tic mot or and d rive requir ed. 3. Mo tor dri ve range is 860 to 1080 r pm for standar d motors and 830 to 1130 for high-st atic motors. A ll other r[...]

40 PERFORMANCE D A T A (cont) OUTDOOR SOUND PO WER (T O T AL UNIT) LEGEND ECONOMIZER ST A TIC PRESSURE DROP (in . wg) 581B03 6-072 ECONOMIZER ST A TIC PRESSURE DROP (in . wg) 581B09 0-150 EV APORA T OR-F AN MO T OR EFFICIENCY *Single phase/3 phase. NO TE: Conv e r t bhp to w atts using the f ollowing f or mula: FIOP PERFECT HUMIDITY ™ DEHUMIDIFIC[...]

41 PERFORMANCE D A T A (cont) 581B F AN RPM A T MOT OR PULLEY SETTING WIT H ST ANDARD MO T OR 581B F AN RPM A T MOT OR PULLEY SETTING WIT H HIGH-ST A TIC MOT OR EV APORA TOR-F AN MO TOR D A T A — ST ANDARD MO T OR LEGEND Bhp — Brake Horsepower *Extensive motor and electr ical testing on these units ensures that the full horsepower and w atts ra[...]

42 PERFORMANCE D A T A (cont) EV APORA TOR-F AN MO TOR D A T A — HIGH-ST A TIC MOT ORS LEGEND Bhp — Brak e Horsepo wer *Extens ive mot or and electrical tes ting on these un its ensures t hat the full horsepo wer and w atts range of the moto rs can be utiliz ed with con fidence. Using y our fan mot ors up to the rating s shown in this tab le wi[...]

43 PERFORMANCE D A T A (cont) 50 40 30 20 10 0 0 0.25 0.5 0.75 1 FLOW (CFM) ST A TIC PRESSURE (in. wg) 3 TO 6 TON 7 1/2 T O 12 1/2 TON 0.25 0.20 0.15 0.10 0.05 0.00 1200 2000 2800 3600 4400 FLOW (CFM) ST A TIC PRESSURE (in. wg) 3 TO 6 TON 7 1/2 T O 12 1/2 TON 0.35 0.30 EconoMi$ er Outdoor-Ai r Leakage EconoM i$er Return-Air Pressure Dr op 0.25 0.20[...]

44 PERFORMANCE D A T A (cont) AL TITUDE COMPENSA TION* 581B03 6-072 * As the heigh t above sea le vel increases, there i s less oxygen per cubic foot of air . Therefore, heat i nput rate s hould be r educed at higher altitudes. † Orifi ces available through your B ryant d istributor. AL TITUDE COMPENSA TION* 581B09 0-150 *As the height above sea [...]

45 ELECTRICAL D A T A 581B036-072 ST AND ARD MO T OR (Units Without Electrical Con venience Outlet) 581B036-07 2 ST AND ARD MO TOR (Uni ts With Electrical Con venience Outlet) LEGEND *Used to det er mine minim um disconnect pe r NEC. † Fus e or HACR ci rcuit breaker. NO TES: 1. In complian ce with NEC require ments f or multimot or and combin ati[...]

46 ELECTRICAL D A T A (cont) 581B03 6-072 HIGH-ST A TIC MO T OR (Units Withou t Electrical Con venie nce Outlet) 581B036-07 2 HIGH-ST A TIC MO TOR (Uni ts With Electrical Con venience Outlet) LEG END *Used to determine minimum disconnect per NEC. † Fuse or HACR circuit breaker . NO TES: 1. I n compliance with NEC requirements for multimotor and c[...]

47 ELECTRICAL D A T A (cont) 581B090-150 ST AND ARD MO T OR (Units Without Electrical Con venience Outlet) 581B090-15 0 ST AND ARD MO TOR (Uni ts With Electrical Con venience Outlet) LEGEND *Used to determine minimum disconnect per NEC. † Fuse or HACR circuit breaker per NEC. NO TES: 1. I n compliance with NEC requirements for multimotor and comb[...]

48 ELECTRICAL D A T A (cont) 581B09 0-120 HIGH-ST A TIC MO T OR (Units Withou t Electrical Con venie nce Outlet) 581B090-12 0 HIGH-ST A TIC MO TOR (Uni ts With Electrical Con venience Outlet) LEGEND *Used to determine minimum disconnect per NEC. † Fuse or HACR circuit breaker per NE C . NO TES: 1. I n compliance with NEC requirements for multimot[...]

49 APPLICA TION D A T A 1. CONDENSA TE DRAIN P AN — A sloped co ndensate dr ain pan is s upplied o n all units . The cond ensate pan m ust be e xternally tr apped. Cond ensate dr ains a re located on both the botto m and end of the un it. 2. DUCTWORK — All ductw or k mus t be attached to flang es. If no f lange s ar e pres ent, they must be f i[...]

50 APPLICA TION D A T A (cont) Stan dard Unit Refr igera nt Cy cle At point n o . 1 in the pres sure enthalp y curve , va por lea ving th e compre ssor at a high pre ssure and a hi gh temper ature enters the conde nser . The condense r remov es heat from the refriger- ant, lo wers i ts temper ature , and chan ges it to a liquid. At poi nt no . 2, t[...]

51 APPLICA TION D A T A (cont) Pe r f e c t H u m i d i t y ™ Dehumidification Option[...]

52 APPLICA TION D A T A (cont) NO TE: Number s 1 t hrough 4 indicate point numbers ref erred to in P erfect Humidity ™ Dehumidification P ackage Design Eff ect s section. Pressure En thalpy Cu rve[...]

53 APPLICA TION D A T A (cont) Po i n t 1 — Enter ing Air (F) 80 db/67 wb Po i n t 2 — Leaving Air (F) 58.9 db/56.4 wb (Without Subcooler) Po i n t 3 — Leaving Air (F) 63.0 db/56.8 wb (With Subcooler) LEGEND db — Dry Bulb wb — We t B u l b Psychr ometric Chart (581B072 Sho wn)[...]

54 TYPICAL PIPING AND WIRING V ertical Dischar ge Horizontal Disc harge LEGEND NEC — National Electrical Code[...]

55 TYPICAL WIRING SCHEMA TIC 581B0 36-072 T ypical Wiring Sc hematic and Componen t Arrangement (208/230 V 3-Phase Uni t Shown )[...]

56 TYPICAL WIRING SCHEMA TIC (cont) 581B036-07 2 T ypical Wiring Schematic an d Component Arrangement (208/230 V 3-Phase Unit Shown) (con t) LEG END AHA — Adjustable Heat Anticipator C — Contactor , Compressor CAP — Capacit or CC — Cooling Compensator CLO — Comp ressor L ockout COMP — Comp ressor M otor D — Diode EC — Enthalpy Con t[...]

57 TYPICAL WIRING SCHEMA TIC (cont) 581B090 -150 T ypical Wi ring Schematic LEGEND AHA — Adjustable Heat Anticipator BR — Burner Relay C — Contactor , Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Compensator CLO — Compressor Lock out COMP — Compressor Motor CONN — Connection CR — Control Relay D — Diode EC — [...]

58 CONTR OLS OPERA TING SEQ UENCE FOR 581B036-072 U NITS Cooling, Units W ithout Economizer — W hen t her mos tat ca lls f or cool ing, terminals G and Y1 and the compresso r contactor (C) are energiz ed. The indoor (e vapor ator) f an motor (IFM), compre ssor , and outdoor (condens er) f an motor (OFM) star t. The OFM r uns contin uously whi le [...]

59 CONTR OLS (cont) If the sup ply-air tem perature f alls belo w 52 F , a swi tch on the supply -air thermostat i s closed be tween th e T1 terminal an d the 24 v ac ter minal . This causes the damper to mo dulate cl osed unti l the su pply- air t empera ture ri ses above 55 F or t he dam per reaches the minim um positi on. When the supply-a ir te[...]

60 GUIDE S PECIFICA TIONS P A CKA GED ROOFT OP COOLING UNIT WITH GAS HEA T — CONST ANT V OLUME APPLICA TION HV AC GUIDE SPECIFICA TIONS SIZE RANGE: 3 T O 12 1 / 2 T ONS , NOMINAL COOLING 72,000 T O 250,000 BTUH, NOMINAL INPUT HEA T ING BR Y ANT MODEL NUMBER: 581B PA R T 1 — GENERAL 1.01 SYSTEM DESCRIPTION Outdoo r rooftop- or s lab-mounted, ele[...]

61 GUIDE SPECIFICA TIONS (cont) I. Controls and Safeties : 1. Unit Controls: Unit s hall be compl ete with sel f-contained l ow- v oltage con trol circuit prote cted by a fus e on the 24-v transfor mer s ide. 2. Saf eties: a. Uni t shall incorporate a solid-state compress or prote ctor which pro vides anti-c ycle reset cap abil- ity at the spa ce t[...]

62 GUIDE SPECIFICA TIONS (cont) 11. Return-Air T emperature Sensor : The re tur n- air te mpera ture se nsor s hall be used with the E conoMi$er d e vice . When used in conj unction with a n outdoor-air temperature sensor , the EconoMi $er de vice will provi de diff erential temper a- ture con trol. 12. Indoo r-Air Quality (CO 2 ) Sensor : Shall ha[...]

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Copyright 20 00 Br yant Heat ing & Coo ling Sy stems Print ed in U.S.A. 12/00 Ca talog No. 5258-103 SPECIFICATIONS SUBJE CT TO CHANGE WITHOUT NOTICE UNIT MUST BE INST ALLED IN ACCORDANCE WITH INSTALLATION INSTRUCTIONS[...]