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Bryant 551J - page 1
551J SINGLE P ACKAGE ROOFTOP COOLING ONL Y SIZ ES 04 - - 06 with PURON R (R - - 410A) RE FIRGERANT Installation Instructions NOTE : Read the entire instru ction manual before s tarting the ins tallation T ABLE OF CONTENTS SAFET Y CONSIDE RA TIONS 1 .................... INS T ALLA TION 5 ............................... Step 1 - - P lan for U nit Loc ...
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Bryant 551J - page 2
2 ELECTRIC AL SHOCK HAZARD Failure t o follow this warning c ould ca use pe rsonal injury or dea th. Before performi ng service or mainte nance opera tions on unit, turn off main power switch t o unit and instal l lockout ta g. Ensure ele ctric al servic e to rooftop uni t agrees w ith vo ltage and amperag e lis ted on the unit rating pla te. Unit ...
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Bryant 551J - page 3
3 Horizontal Connections / Economizer V ertical Connections / Economizer C10057 Fig. 1 - - Unit Dimensional Drawing 551J j ...
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Bryant 551J - page 4
4 C10058 Fig. 1 - - Unit Dimensional Drawing (c ont.) 551J j ...
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Bryant 551J - page 5
5 INST ALLA TION Jobsite Survey Complete th e follo wing checks befo re ins tallation. 1. Consult local buildi ng codes and the NEC (National Electrical Code) AN SI /NF P A 70 for special installa- tion requ irements . 2. Det ermine uni t locat ion (from project pl ans) or sele ct unit loca tion. 3. Chec k for possible overhea d obstructi ons which ...
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Bryant 551J - page 6
6 Pad- - mou nted in st allatio n — Prepare pa d and unit supports Check a nd tighte n the bottom conde nsate drain connectio n plug Rig and pla ce uni t Convert unit to side duct c onnect ion arrangem ent Install fie ld - - fa brica ted ductwork at unit duc t openings Install out door air hood Install c ondensate l ine tra p and piping Make elec ...
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Bryant 551J - page 7
7 NO TES: 1. Roof curb accesso ry is shipped disa ssembled. 2. Insu lated pane ls. 3. Dimensions in [ ] are in millimeters. 4. Roof curb: galvanized stee l. 5. At tach ductwork to cu rb (flang es of duct rest on curb ). 6. Se rvice cleara nce: 4 ft on each side. 7. Direction of airflow . ROOF CURB A CCESSOR Y A UNIT SIZE CRRFCURB001A01 1’-2” [3 ...
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Bryant 551J - page 8
8 A-B 0.5” (13) B-C 1.0” (25) A-C 1.0” (25) MAXIMUM ALL OWABLE DIFFERENCE IN. (MM) C06110 Fig. 4 - - Un it Levelin g T olerances Ste p 5 — Field Fabr icat e Duc tw ork Cabinet re turn-ai r static pressure (a negat ive condition) shall not exceed 0.35 in. wg (87 P a) w ith economizer or 0.45 in. wg (1 12 Pa) without e conomiz er . For verti ...
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Bryant 551J - page 9
9 P o s i t i o n i n go nC u r b— Po sition unit on roof curb so that the follow ing clearances are maintained : 1 / 4 in. (6.4 mm) clearance between th e roof curb and the base rail inside the front and rear , 0.0 in. clearance betw een the roof curb and th e base r ail inside on the duct en d of th e unit. This will result in the dis tance bet ...
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Bryant 551J - page 10
10 SEAL STRIP HOOD TOP SEAL STRIP HOOD SIDE SCREEN RET AINER HOOD SIDE SCREEN TRACKS OUTDOOR AIR INLET SCREEN SEAL STRIP OUTDOOR-AIR HOOD – UNASSEMBLED HOOD SIDES AND TOP ASSEMBLED TRACKS FOR AIR INLET SCREEN HOOD SIDE HOOD TOP C07504 Fig. 9 - - Outdoor - - Air Hood Detai ls Economize r Hood — NOTE : If the pow er exhaust acces so ry is to be i ...
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Bryant 551J - page 11
11 Ste p 9 — Insta ll Exte rnal Conde nsate T rap and Line The uni t has one 3 / 4 -in. conde nsate drai n connec tion on the e nd of the conde nsate pan a nd an alterna te connecti on on the bottom. See Fig. 13. Unit airfl ow configura tion does not dete rmine which drain c onnecti on to use. Eit her drain c onnecti on can be used with ve rtica ...
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Bryant 551J - page 12
12 C 11 23 Disconnect per NEC 208/230-1-60 or Disconnect per NEC 11 13 13 23 L1 L2 L3 TB C IFC Direct Drive IFM 208/230-3-60 460-3-60 575-3-60 Units Without Disconnect Option Units With Disconnect Option L1 L2 L3 2 4 6 1 3 5 Optional Disconnect Switch Disconnect factory test leads; discard. Factory Wiring 1-ph Belt Drive IFM C10056 Fig. 15 - - Powe ...
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Bryant 551J - page 13
13 Convenience Outlet GFCI Pwd-CO F use Switch Pwd-CO T ransformer Control Box Access Panel C08128 Fig. 17 - - Convenience O utlet Location In st alling W eatherp r oof C over – A weathe rproof while-in-use cover for the factory-i nstall ed convenienc e outlets is now required by UL standa rds. This c over cannot be factory-m ounted due its dep t ...
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Bryant 551J - page 14
14 NOTICE Convenience Outlet Utilization Maximum Intermittent use : 15 Amps 2 to 3 Hours Maximum Continuous use : 8 Amps 24/7 50HJ542739 3.0 A9225 Fig. 20 - - Conv enien ce Outlet Ut ilization N otice La bel Duty Cycle: the uni t - - powere d conve nienc e outlet has a duty cycle limitation. Th e trans former is intend ed to prov ide pow er on an i ...
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Bryant 551J - page 15
15 X C G W2 C W2 G W1 O/B/Y2 Y2 R W1 R Y1 Y1 T H E R M O S T A T (Note 1) (Note 2) Note 1: T ypical multi-function marking. Follow manufacturer’s configuration Instructions to select Y2. Note 2: Y2 to Y2 connection required on single-stage cooling units when integrated economizer function is desired. Field Wiring Central T erminal Board T ypical ...
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Bryant 551J - page 16
16 DISCONNECT MOUNTING LOCA TION EMT OR RIGID CONDUIT (FIELD-SUPPLIED) SINGLE POINT BOX CENTER POST HEA TER COVERS HEA TER MOUNTING BRACKET HEA TER MODULE (LOCA TION 2) HEA TER MODULE (LOCA TION 1) SINGLE POINT BOX MOUNTING SCREW BRACKET AND CONDUIT DRIP BOOT MAIN CONTROL BOX CONTROL WIRE TERMINAL BLOCK MANUAL RESET LIMIT SWITCH C08134 Fi g. 2 5 - ...
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Bryant 551J - page 17
17 Sm oke Det ectors — Smoke detec tors are avai lable a s factory - - i nstalle d options on 551J model s. Smoke detec tors ma y be spec ified for Supply Air only or for Return Air wit hout or with econom izer or i n combina tion of Supply Air and Return Air . Return Air smoke de tect ors are arranged for vert ica l return configura tions only . ...
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Bryant 551J - page 18
18 The sens or us es a process called dif ferential sens ing to prevent gra dual environm ental c hanges from trigge ring false ala rms. A rapid change in environm ental c onditions, such as s moke from a fire , causes the sensor t o signal an alarm state b ut dus t and debris accumulated over time does not. For install ati ons using two sensors, t ...
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Bryant 551J - page 19
19 Compl etin g Ins tall atio n of Return Air Smok e Sens or : 1. Unscrew t he two screws holdi ng the Re turn Air Sensor detect or plate. See Fig. 34. Save the screws. 2. Re move the Re turn Air Sensor and its det ector pl ate . 3. Rot ate the de tect or plate so t he sensor is facing outwards and the sampling t ube connec tion is on the bottom. S ...
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Bryant 551J - page 20
20 R TU- - MP c ontr ol system — The R T U- - MP controll er , see Fig. 36, provides expanded stand - - a lone opera tion of the HV AC system pl us connec tion and c ontrol through communica tion wit h several Building Automation System s (BAS) through popular thi rd - - pa rty network systems. T he availa ble network systems a re BACnet MP/TP , ...
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Bryant 551J - page 21
21 3 C10044 Fig. 38 - - RTU- - M P System Contr ol Wiring Diagram 551J j ...
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Bryant 551J - page 22
22 T abl e 3 – RTU- - M P Co ntroll er Inputs and O utputs POI NT N AM E BA Cne t OBJ ECT NAME TYPE OF I/O CON N ECTI ON PIN NUMB ERS INPU TS Space T em perature S ensor sptsens AI (10K T hermistor) J 2 0 --- 1 , 2 Supply Air T emperature sat AI (10K T hermistor) J2 - - - 1, 2 Loca l Outside Air T emperat ure Senso r oatsens A I (10K Therm istor) ...
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Bryant 551J - page 23
23 Outdoor Air T e mpera ture (OA T ) Sensor - - The OA T i s fact ory- - mounte d in the EconoMi$er2 (FIOP or access ory ). It is a n ominal 10 k ohm thermis tor attached to an eyelet moun ting ring . EconoMi$e r2 - - The R T U- - MP control is used wit h EconoMi$er2 (option or accessory) for outdoor air management. The damper position is contr ol ...
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Bryant 551J - page 24
24 SEN J20-1 J20-2 SEN SET Jumper J20-3 SET C08461 Fig. 43 - - RTU- - M P T - - 56 Sensor Connections Connect T - - 59 - - The T - - 59 space sensor require s a separat e, isola ted power supply of 24 V AC. S ee Fig. 44 for interna l connect ions at the T - - 59. Connect the SEN terminal (BLU ) to R TU - - MP J20- - 1. Conn ect the CO M terminal (B ...
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Bryant 551J - page 25
25 requirem ents and t ermina l loca tions. See Fig. 47 for typica l CO 2 sensor wiring schemat ic. 8 7 6 5 4 32 1 2 1 HG 24 V AC OR 24 VDC NC ALARM RELA Y CONT ACTS COM NO } 0-10VDC SIG COM 4-20mA + + - + - J3 J4 C08635 Fig. 47 - - Indoor/Outdoor Air Quality (CO 2 )S e n s o r (33ZCSENC O2) - - T ypical Wiring Diagram T o accurately monitor th e q ...
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Bryant 551J - page 26
26 On 551J unit s equi pped with fa ctory - - install ed Smoke Detector (s) , the smoke detecto r contro ller implements the unit shutdown through i ts NC cont act set conne cted to t he unit’ s CTB input. The FSD func tion is initiated via the smoke de tec tor ’ s Alarm NO c ontac t set. T he R TU - - MP controll er comm unicat es the smoke de ...
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Bryant 551J - page 27
27 SW3 Protocol Selection PROTOC OL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1 BAC net M S/TP (Ma ster) Unused OF F OFF OFF ON OF F Select B au d Sele ct Bau d Modb us (Slave) Unused OF F OFF ON ON OFF Select Bau d Se lect Ba ud N2 (Slave) Unused OF F OFF OFF ON ON OFF OFF LonWorks Unuse d ON ON OFF ON OFF OF F OFF NOTE: DS = Dip Sw itch BACnet MS/TP SW3 exam ...
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Bryant 551J - page 28
28 T able 4 – LEDs The LEDs on the R TU- - M P s how the status of certain f unction s If th is LE D is on ... Statu s is ... Power The R TU MP has power Rx The RTU MP is receiving data from the network segment Tx The R TU MP is tran smitting d ata over the n etwork segm ent DO# The digital output is active The Run and Error LEDs indicate contr o ...
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Bryant 551J - page 29
29 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . NO C .O. or U NPWR C.O. CRHEA TER*** NOM (KW) FLA FL A NO P .E. w/P .E. (pwrd fr /un it) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*04 208/230 - - - 1 - - - 60 D D --- ...
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Bryant 551J - page 30
30 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a( c o n t ) UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . w/ P WRD C.O . CRHEA TER*** NOM (KW) FLA FL A NO P .E. w/P .E. (pwrd fr /un it) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*04 208/230 - - - 1 - - - 60 D D -- ...
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Bryant 551J - page 31
31 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a( c o n t ) UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . NO C .O. or U NPWR C.O. CRHEA TER*** NOM (KW) FLA FL A NO P .E. w/P .E. (pwrd fr /un it) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*05 208/230 - - - 1 - - - ...
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Bryant 551J - page 32
32 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a( c o n t ) UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . w/ PWRD C. O. CRHEA TER*** NOM (KW) FLA FL A NO P .E. w/P .E. (pwr d fr/u nit) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*05 208/230 - - - 1 - - - 60 D D --- ...
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Bryant 551J - page 33
33 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a( c o n t ) UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . NO C .O. or U NPWR C.O. CRHEA TER*** NOM (KW) FLA FL A NO P .E . w/P .E. (pwr d fr /unit) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*06 208/230 - - - 1 - - - ...
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Bryant 551J - page 34
34 T a b l e5U n i tW i r e / F u s eo rH A C RB r e a k e rS i z i n gD a t a( c o n t ) UNI T N O M . V --- P h --- H Z IFM TY PE ELEC. HTR P. E . w/ P WRD C.O . CRHEA TER*** NOM (KW) FLA FL A NO P .E . w/P .E. (pwrd f r/u nit) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 551J*06 208/230 - - - 1 - - - 60 D D - ...
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Bryant 551J - page 35
35 Lege nd and Note s for T able 5 LEG END: BRKR - - - Circuit breaker CO - - - Conve ni ent o utl et DD - - - Direct dr ive ind oor fan motor DISC - - - Discon nect FLA - - - Full loa d a mps IFM - - - In door fa n motor LRA - - - Locke d roto r amps MCA - - - Min imum circu it amp s P E --- P o w e r e x h a u s t PWRD CO - - - Powere d convenien ...
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Bryant 551J - page 36
36 Step 12 — In sta ll Acces sori es A vailable access ories in clude: Curb Thru - - ba se connec tion kit (must be i nstall ed before unit is set on curb) Elec tric he aters and singl e - - poi ng connec tion kit s Manual outside a ir dam per T wo- - Positio n motorized o utsid e air damper EconoMi$er IV (with cont rol) EconoMi$e r2 (without con ...
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