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Manuale per l’uso Bryant 551B

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Summary
  • Bryant 551B - page 1

    Cancels : II 551B-9 0-6 II 551B-90 -7 10/15/05 CONTENTS Page SAFETY CONSIDERA TIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 INST ALLA TION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37 I. Step 1 — Pr o vide Unit Supp ort . . . . . . . . . . . . . . . . . 1 II. Step 2 — Fie ld F abricate Duct work . . . . . . ...

  • Bryant 551B - page 2

    — 2 — III. STEP 3 — INST ALL CONDENSA TE DRAIN LINE AND EXTERNAL TRAP Condensate drain connecti ons are located at the bottom and end of the unit. Unit disc harge connecti ons do not determine the use o f drain conne ctions; e ither drain c onnectio n can be used in ver tic al or hor izo nt al appl icat i ons. When using the stan dard end dra ...

  • Bryant 551B - page 3

    — 3 — NO TES: 1. Ro of curb ac cessor y is sh ipped disass embled. 2. Insul ate d pane ls: 1-i n. thic k pol yure thane f oam, 1 3 / 4 lb density . 3. Dimensions in [ ] are in millimeters. 4. Ro of curb : 16-gag e steel. 5. Att ach ductwork to curb (flange s of duct rest on curb ). 6. Se r vice clearance 4 ft on each sid e. 7. Directi on of ai ...

  • Bryant 551B - page 4

    — 4 — NO TES: 1. Place unit on curb as close as possible t o the duct end. 2. Dimension in ( ) is in millimeters . 3. Hook rigging sh ackles through holes in base rail, a s shown in detail “ A. ” Holes in base rails are c ent ered around the unit center of gra v ity . Use wooden top skid when rigging to prev ent rigging straps from damaging ...

  • Bryant 551B - page 5

    — 5 — Fig. 7 — Base U nit Dimens ions ...

  • Bryant 551B - page 6

    — 6 — T able 1 — Ph ysical Data LEGEND Bhp — Brake Horsep ower UNIT 55 1B 090 102 120 150 NOMINAL CAP ACITY (tons) 7 1 / 2 8 1 / 2 10 12 1 / 2 OPERA TING WE IGHT (lb) Unit 755 895 91 5 930 EconoM i$er IV 75 75 75 75 Perfect Hum idity™ Dehum idif icatio n Package 44 51 51 51 Roof Curb 143 143 14 3 143 COMPRESSOR Scroll Quantit y 2222 Oil ( ...

  • Bryant 551B - page 7

    — 7 — V . STEP 5 — MAKE ELECTRICAL CONNECTIONS A. Field P ower Supply All units e xcept 208/230-v units are factory-wir ed for the volta ge shown on the un it na mepl ate. If the 2 08/2 30-v un it is to be conne cted to a 208-v powe r supply , t he transform er must be rewired by dis connect ing the black wi re from the 230-v terminal wi re o ...

  • Bryant 551B - page 8

    — 8 — T able 2 — El ectrical Da ta See page 10 for legen d and not es. UNIT 551B NOMINAL V- P H - H z IFM TYPE CONV OUTLET VO LTA G E RANGE COMP NO. 1 COMP NO . 2 OFM QTY OFM FLA IFM FLA ELECTRIC HEA TER POWER SUPPL Y DISCONNECT SIZE† Nominal kW* FLA MCA Fuse or HACR Bkr MOCP Min Max RLA LRA RLA LRA FLA LRA 090 208/23 0-3-6 0 STD NO 187 254 ...

  • Bryant 551B - page 9

    — 9 — T able 2 — Elec trical Data (cont) See page 10 for legen d and not es. UNIT 551B NOMINAL V- P H - H z IFM TYPE CONV OUTLET VO LTA G E RANGE COMP NO. 1 COMP NO. 2 OFM QTY OFM FLA IFM FLA ELECT RIC HE A TER PO WER SUPPL Y DISCONNEC T SIZE† Nominal kW* FLA MCA Fuse or HACR Bkr MOCP Min Max RLA LRA RLA LRA FLA LRA 102 (cont) 575- 3-6 0 ST ...

  • Bryant 551B - page 10

    — 10 — LEGEND AND NO TES FOR T ABLE 2 LEGEND *Heater capacity (kW) is based on heater voltage of 208, 240, 480 , and 575-V . If power distribution voltage v ar ies from rated heater voltage, heater kW will v ary accordingly . †Used to determine minimum disconnect per NEC. NOTES: 1. In compliance with NEC requirements for m ultimotor and combi ...

  • Bryant 551B - page 11

    — 11 — B. Field Contr ol Wiring Insta ll a Bryant-a pproved acce ssory the rmostat ass e mbly according to installati on instructions included with the accesso ry . Loca te ther mostat a ssembly on a s olid w all in t he conditione d space to sense aver age temperat ure in accor- dance with thermostat installation instructions. Route thermostat ...

  • Bryant 551B - page 12

    — 12 — 3. Use a wire nut to connec t humidistat cable into low- voltage wiring a s shown i n Fig . 13. T o instal l Thermi distat™ device: 1. Route Thermidi stat cable through hol e provided in unit corner po st. 2. F eed the wires through the raceway built into t he cor- ner post to the 24-v barrier l ocated on the left side of the contr ol ...

  • Bryant 551B - page 13

    — 13 — C. Con venience Out let An option al conven ience o utlet p rovide s power for roofto p use . F or mainte nance personnel sa fety , the convenie nce out- let power is off w hen the unit disco nnect is off . Adjacent unit outlets may be use d for service tools. An optional “Hot Out- let” is ava ilabl e from th e f actory a s a spe cia ...

  • Bryant 551B - page 14

    — 14 — 2. The box with th e econo mizer hood comp onents is shipped in the compartme n t behind t he econ omize r . The Econ oMi$er IV con troll er is m ount ed on top of the Ec onoMi $er IV in th e pos ition shown in Fig. 19 . T o remove the component box from its shipping posi- tion, remove the screw holdin g the hood box bracket to t he to p ...

  • Bryant 551B - page 15

    — 15 — B TOP P ANEL INDOOR COIL ACCESS P ANEL 24 9/16” SCREW HOOD DIVIDER LEFT HOOD SIDE 40 3/8” Fig. 23 — Outdo or-Air Hood Construction 22 1/4” DIVIDER BAROMETRIC RELIEF CLEANABLE ALUMINUM FIL TER FIL TER HOOD FIL TER CLIP OUTSIDE AIR Fig. 24 — Fil ter Installation FOR OCCUP ANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK ...

  • Bryant 551B - page 16

    — 16 — T able 5 — Su pply Air Sensor T e mpera ture/Resis tance Va l u e s The tempera ture sensor loo ks like an eye let termi nal with wires runni ng to it. The sensor is located in the “crimp end” and is s ealed from mo isture. Outdoor Air Locko ut Sens or The Econo mi$er I V is eq uippe d with an ambie nt temp era- ture lockout sw itc ...

  • Bryant 551B - page 17

    — 17 — Outdoor Dry B ulb Chan geover The standard controller is shipped from the facto ry configu red for outdoor dry bulb changeover contro l. The outdoor ai r and suppl y air t emper ature se nsors are included as stan dard. F or this contro l mode, the outdoor tempera ture is compared to an adjust able set point selecte d on the control. I f ...

  • Bryant 551B - page 18

    — 18 — Indoor Air Quality (IAQ ) Sensor Input The I AQ inp ut ca n be used for dema nd con trol v entil ation control based on the leve l of CO 2 measured in th e space or re turn air du ct. Mount the accesso ry IAQ sensor a ccording to manufact urer specif ications. The IAQ se nsor should be wired to the A Q and AQ1 termin als of the contro ll ...

  • Bryant 551B - page 19

    — 19 — Exhaust Set P oin t Adjustment The exhaust set poi nt will determ ine when the ex haust fan runs ba sed on dam p er p o si ti on (if access ory powe r ex ha ust is installed). The set point is modified with the Exha ust F an Set Po int (EXH SET) potentiometer . See Fig. 30. The set point re presen ts the damper posit ion ab ove whi ch th ...

  • Bryant 551B - page 20

    — 20 — Once bas e vent ilat ion h as been dete rmined , set the mini - mum damper position pote ntiometer to the corre ct position. The sam e equation can be used to det erm ine the o c cupied or maximum ventilation ra te to the buildi ng. F or exampl e, an output of 3.6 vo lts t o the ac tuat o r pro v ides a ba se ventilation rate of 5% and a ...

  • Bryant 551B - page 21

    — 21 — VII. STEP 7 — ADJ UST EV APORA T OR-F AN SPEED Adjus t evapo rator -fan rpm to meet jo bsite conditi ons. F or units wi th elect ric heat, requ ired minimum cfm is 225 0 for 551 B090 and 102 a nd 3000 for 551B120 and 15 0. See Ta b l e 8 f o r e x c e p t i o n s . T able 8 — Minim um Required Airflow Exceptions T ables 9 and 10 show ...

  • Bryant 551B - page 22

    — 22 — T able 9 — Fan Rpm at Motor Pulle y Setting *; Standar d Mo tor/Drive *Approximate f an r pm shown. T able 10 — F an Rpm at Motor Pulle y Setting*; High -Static Motor/Drive *Approximate f an r pm shown. T able 11 — Ev aporator -Fan M otor Data — Standard Motor LEGEND BHP — Brake Horsepower *Extensive motor and electrical test i ...

  • Bryant 551B - page 23

    — 23 — T able 12 — Ev aporator-F an Motor Data — High-Static Motors LEGEND BHP — Brake Horsepower *Extensive motor and electrical testing on these uni ts ensur es that the full horsepower and watts range of the motors can be utilized with confidence. Usi ng your f an mot ors up to the ratings shown in this table will not result in nuisanc ...

  • Bryant 551B - page 24

    — 24 — T able 15 — F an P erf ormance 551B090 — V ertical Dischar ge Units; Standar d Motor (Belt Drive )* LEGEND *Motor drive range: 840 to 1085 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 2.90. 3. See page 23 for ge neral f an performance ...

  • Bryant 551B - page 25

    — 25 — T able 16 — F an P erf ormance 551 B090 — V ertical Dischar ge Units; Hig h-Static Motor (Belt Dr ive)* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 4.20. 3. See page 23 for ge neral f an perform ...

  • Bryant 551B - page 26

    — 26 — T able 17 — F an P erf ormance 551B102 — V ertical Dischar ge Units; Standar d Motor (Belt Drive )* LEGEND *Motor drive range: 840 to 1085 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 2.90. 3. See page 23 for ge neral f an performance ...

  • Bryant 551B - page 27

    — 27 — T able 18 — F an P erf ormance 551 B102 — V ertical Dischar ge Units; Hig h-Static Motor (Belt Dr ive)* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 4.20. 3. See page 23 for ge neral f an perform ...

  • Bryant 551B - page 28

    — 28 — T able 19 — Fan P erf ormanc e 551B120 — Ve rtical Discha rge Units; Standar d Motor (Belt D rive* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 3.70. 3. See page 23 for ge neral f an performance ...

  • Bryant 551B - page 29

    — 29 — T able 20 — F an P erf ormance 551 B120 — V ertical Dischar ge Units; Hig h-Static Motor (Belt Dr ive)* LEGEND *Motor drive range: 830 to 1130 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 5.25. 3. See page 23 for ge neral f an perform ...

  • Bryant 551B - page 30

    — 30 — T able 21 — F an P erf ormance 551B150 — V ertical Dischar ge Units; Standar d Motor (Belt Drive )* LEGEND *Motor drive range: 830 to 1130 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 5.25. 3. See page 23 for ge neral f an performance ...

  • Bryant 551B - page 31

    — 31 — T able 22 — Fan P erforman ce 551B 090 — Horiz ontal Disc harge Units; Sta ndar d Motor ( Belt Drive)* LEGEND *Motor drive range: 840 to 1085 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 2.90. 3. See page 23 for ge neral f an performa ...

  • Bryant 551B - page 32

    — 32 — T able 23 — F an P erf ormance 551B090 — H orizontal D ischar ge Units; High-Stati c Motor (Bel t Drive)* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 4.20. 3. See page 23 for ge neral f an perfo ...

  • Bryant 551B - page 33

    — 33 — T able 24 — Fan P erforman ce 551B 102 — Horiz ontal Disc harge Units; Sta ndar d Motor ( Belt Drive)* LEGEND *Motor drive range: 840 to 1085 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 2.90. 3. See page 23 for ge neral f an performa ...

  • Bryant 551B - page 34

    — 34 — T able 25 — F an P erf ormance 551B102 — H orizontal D ischar ge Units; High-Stati c Motor (Bel t Drive)* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 4.20. 3. See page 23 for ge neral f an perfo ...

  • Bryant 551B - page 35

    — 35 — T able 26 — Fan P erforman ce 551B 120 — Horiz ontal Disc harge Units; Sta ndar d Motor ( Belt Drive)* LEGEND *Motor drive range: 860 to 1080 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 3.70. 3. See page 23 for ge neral f an performa ...

  • Bryant 551B - page 36

    — 36 — T able 27 — F an P erf ormance 551B120 — H orizontal D ischar ge Units; High-Stati c Motor (Bel t Drive)* LEGEND *Motor drive range: 830 to 1130 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 5.25. 3. See page 23 for ge neral f an perfo ...

  • Bryant 551B - page 37

    — 37 — T able 28 — Fan P erforman ce 551B 150 — Horiz ontal Disc harge Units; Sta ndar d Motor ( Belt Drive)* LEGEND *Motor drive range: 830 to 1130 rpm. All other r pms require field- supplied drive. NO TES: 1. Boldface indicates field-supplied drive is required. 2. Maximum continuous bh p is 5.25. 3. See page 23 for ge neral f an performa ...

  • Bryant 551B - page 38

    — 38 — PRE-ST ART -UP Procee d as follows to in spect and pr epare the unit for initial start - up: 1. Remo ve a ll acce ss pane ls . 2. Read a nd follow in struction s on al l W A RNING , CA U- TION , and INFORMA TION labels attached to or shipped with unit. 3. Ma k e the fol lowi n g insp ectio ns: a. Inspect for shipping and handling damages ...

  • Bryant 551B - page 39

    — 39 — IX. C OO LING T o start unit, turn on main power supply . Set system selector switc h at C OOL posi tion an d fa n sw itch a t AUTO p osi tion . Adjust thermostat to a se tting below ro om temperature. Compress or sta rts on clo sure of con tacto r . Check unit charge. Refer to Refrigeran t Charge section on page 42. Reset th ermost at a ...

  • Bryant 551B - page 40

    — 40 — Subcoo ling Mo de When su bco oling mo de is initia te d, this will en ergize ( close ) the liqu id li ne solen oid va lve (LLS V) for cing th e hot li quid refrigerant to enter into the subco oling coil (see Fig . 41). As the hot liquid refrigerant passes through the subcoo ling/ reheat dehumi difica tion co il, it is exp osed to the co ...

  • Bryant 551B - page 41

    — 41 — T able 29 — P erfect Humidi ty™ Dehumidific ation System Sequence of Operation and System Response — Du al Compressor Un its LEGEND NO TE: On a therm ostat call f or W1, all cooling and dehumidification will be off . F . Units With P ower Exha ust Whe n the ou tdoor -air damper is modulat ed open, the t wo end sw itch es located in ...

  • Bryant 551B - page 42

    — 42 — C. Condensat e Drain Chec k and c lean ea ch year at s t art of co oling se ason. In wi n- ter , protect aga inst free ze-up. D . Filter s Clean or replac e at sta rt of eac h heati ng and cooli ng season, or more ofte n if opera ting con di ti ons req uir e it. Rep lace me nt filters must be same dim e nsions a s origina l filters. E. O ...

  • Bryant 551B - page 43

    — 43 — Fig. 47 — Cooli ng Charging Charts, St andard 551B090 Unit Fig. 48 — Cooling Charging Charts, Sta ndard 5 51B102 Unit ...

  • Bryant 551B - page 44

    — 44 — Fig. 49 — Cooli ng Charging Charts, St andard 551B120 Unit Fig. 50 — C ooling C hargi ng Charts, Standar d 551B150 Uni t ...

  • Bryant 551B - page 45

    — 45 — E. T o Use Cooling Charging Ch arts, Units the P erfect Humidity™ D ehumidifica tion System Refer to the charts (Fig. 5 1-53) to deter mine the prope r leav- ing cond en ser pressu re and tempera ture. EXAMPLE: (Fig . 51) Circuit 1 Leaving Condenser Pressure . . . . . . . . . . . . . . . . . . . 300 psig Leaving Condenser T emperature ...

  • Bryant 551B - page 46

    — 46 — TROUBLESHOO TING I. UNIT TROUBLESHOO TING Refe r to T ables 30- 32 fo r addi ti on al in for mati on. T abl e 30 — Coo li ng T roubl esh oot ing PROBLEM C A USE REMED Y Compressor(s) and Condenser Fan Will Not Start. P ower failure . Call power company . Fuse blown or circuit br eaker tripped. Replace fuse or r eset circuit breaker . D ...

  • Bryant 551B - page 47

    — 47 — T able 31 — P erfect Humidi ty™ Dehumidific ation System Subcoolin g Mode Service Anal ysis T able 32 — P erfect Hum idity Deh umidification Hot Gas Reheat Mode Service Anal ysis PROBLEM CAUSE REMED Y Subcool ing Mode (Liquid Reheat ) Will Not Ene rgize . No power to control t ransf or mer from ev aporator-fan motor . Check po wer ...

  • Bryant 551B - page 48

    — 48 — II. ECONOMI$ER IV TR OUBLESHOO TING See T able 3 3 for E conoMi$ er IV logic . A func tional view of the EconoM i$er IV is s hown in Fig. 54. Typical set tings , sensor ranges , and jumper position s are also s hown. An Econo Mi$er I V simulato r prog ram is av ail- a b l e f r o m B r y a n t t o h e l p w i t h E c o n o M i $ e r I V ...

  • Bryant 551B - page 49

    — 49 — 4. Remove the jumper ac ross T and T1. The actuator shou ld drive fully close d. 5. Re tu rn Ec o n o M i $er IV se tt in gs a n d wi r in g t o n or ma l after completing tro ubleshooting. G. EconoMi$ er IV T roublesh ooting Comp letion This p ro c edur e i s u sed t o re t ur n t h e E c o noM i$er IV t o op e r a- tion. No troublesho ...

  • Bryant 551B - page 50

    Copyright 2 005 Br yant He ating & Cooli ng System s Prin ted in U.S.A. CA T ALO G NO. 04-53551004 -01 INDEX Access panel s 14 Barometric f low capacity 16 Char ging chart, refrigera nt 43-45 Clearance 2, 5 CO 2 sensor Configuration 20 Settings 18, 20 Compressor Lubrication 42 Mounting 38 Rotation 38 Condensate drain Cleaning 42 Location 2, 4 C ...

  • Bryant 551B - page 51

    ...

  • Bryant 551B - page 52

    Copyright 2 005 Br yant He ating & Cooling System s Print ed in U.S.A. CL-1 CA T ALOG NO. 04-535 51004-01 CUT ALONG DO TTED LINE CUT ALONG DO TTED LINE ST ART -UP CHECKLIST (Remov e and Store in Job File) I. PRELIMINAR Y INFORMA TION MODEL NO.: _____ __ _____ ____ _______ ____ _____ ____ __ SERIAL NO . : _ _____ ____ _____ __ ____ _____ ______ ...

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