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Bryant 548J*14D - page 1
548J*14D SINGLE P ACKAGE ROOFTOP HEA T PUM P WITH WI TH PURON R (R - - 410A) RE FRIGERANT SIZE 14 Installation Instructions NOTE : Read the entire instru ction manu al befor e startin g the ins tallation. T ABLE OF CONTENTS SAFET Y CONSIDERA TIONS 1 .................... INS T ALLA TION 4 ............................... Jobsite Survey 4 ............ ...
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Bryant 548J*14D - page 2
2 SAF ETY CONSIDERA TIONS Impro per installatio n, adjus tment, alteration, s ervice, maintenance, o r use can cause explos ion, fire, electr ical shock or other c onditions which m ay ca use personal injury or property dam age. Consult a qua lifi ed insta ller, service agenc y , or your distributor or branch for infor mation or ass istance. The qu ...
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Bryant 548J*14D - page 3
3 Horizontal Connections / Economizer V ertical Connections / Economizer C09895 Fig. 1 - - Unit Dimensional Drawing – S ize 14 Unit 548J*14D ...
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Bryant 548J*14D - page 4
4 C10364 Fig. 1 - - Unit Dimensional Drawing – Size 14 Unit (cont.) INST ALLA TION Jobsite Survey Complete th e followin g checks befor e installation. 1. Consult local building code s a nd the NEC (Nat ional Electrical Code) AN SI/NF P A 70 for special ins talla- tion requ irements. 2. Det ermi ne unit loca tion (from proje ct pla ns) or selec t ...
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Bryant 548J*14D - page 5
5 Roof Mount — Check bui lding code s for weight distribution requirem ents. Unit operat ing weight i s shown in T abl e 1. T abl e 1 – O per at ing Weight s 548J*14D UN ITS LB ( KG) Com ponent 14D Base Uni t 1370 (620) Economizer Ve r t ic a l 100 (45) Horizo ntal 115 (52) Pow er e d O u t le t 32 (15) Curb 14 - - - in/356 mm 180 (82) 24 - - - ...
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Bryant 548J*14D - page 6
6 C10365 Fig. 3 - - Roof Curb Details 548J*14D ...
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Bryant 548J*14D - page 7
7 A-B 0.5” (13) B-C 1.0” (25) A-C 1.0” (25) MAXIMUM ALL OWABLE DIFFERENCE IN. (MM) A B C C10001 Fig. 4 - - Unit L evelin g T olerances Ste p 5 — Field Fabr icate D uct wor k Cabinet re turn-ai r static pre ssure (a negative conditi on) shall not exceed 0.35 in. wg (87 P a) with economizer or 0.45 in. wg (1 12 Pa) without ec onomiz er . For ...
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Bryant 548J*14D - page 8
8 P o s i t i o n i n go nC u r b— For full perim ete r curbs CRRFCURB072A00 and 073A00, the cle aranc e betwee n the roof curb and the front and rea r base rai ls should be 1 / 4 in (6.4 mm). The clea rance bet ween the curb a nd the e nd base rail s should be 1 / 2 in (13 mm). For retrofit app lications with cur bs CRRFCURB003A01 and 4A01, the ...
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Bryant 548J*14D - page 9
9 Economizer Cut Plastic T ies (2) Places Remove Hood Parts C10005 Fig. 9 - - Econ omizer Wirin g T wo P osition Damper Hood Re moval and Setup - - Factory Op tion — 1. T he hood is shipped in knock- - down form and assembled t o a me tal support tray using plastic stretc h wrap . Located in the retur n air co mpartmen t, the ass embly’ s metal ...
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Bryant 548J*14D - page 10
10 Economize r Hood and T wo- - Positi on Hood — NOTE : If the power exhau st acces sory is to be ins talled on the unit , t he hood shipped wit h the unit will not be used and mus t be dis carded. Save th e aluminu m filter for use in the powe r exhaust hood a ssembly . 1. The i ndoor co il access panel will be used as the top of the hood. If th ...
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Bryant 548J*14D - page 11
11 The pipi ng for the c ondensate drai n and ext ernal tra p can be completed after the u nit is in place. See F ig. 15. NOTE: T rap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended . MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE BASE RAIL OPEN VENT TO ROOF DRAIN DRAIN PLUG ROOF CURB SEE NOTE 2 ˝ ...
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Bryant 548J*14D - page 12
12 C10014 Fig. 19 - - Moun tin g Positio n for Field Disco nnects (over 100A) C10013 Fig. 20 - - Moun tin g Positio n for Field Disco nnects (up to 100A) All unit s exce pt 208/ 230-v unit s are fact ory wired for the voltage shown on the nam epla te. If the 208/ 230-v uni t is to be c onnecte d to a 208-v powe r supply , the contr ol transformer m ...
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Bryant 548J*14D - page 13
13 Un its W itho ut Fa ctory- - In sta lled D isco nn ect — When installing units , provide a d isconnect sw itch of adequ ate size per NEC ( Natio nal Electrical Code) . Disconnect sizi ng data i s provided on the unit i nformat ive plate . L ocat e on unit cabine t or within sight of the unit per nationa l or loc al codes. Do not c over unit in ...
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Bryant 548J*14D - page 14
14 the transforme r; however , the conduit m ust be rout ed so that all wiring is e ither in the c onduit or behin d the access panel . If the conve nienc e outl et t ransformer i s connect ed to the line side of the fact ory disconnect option, route the wire s through the we b bushing locat ed on the bottom of the disconnec t box. For t he l oad s ...
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Bryant 548J*14D - page 15
15 Fa ct or y - - O pti on T hru - - Base Conne c ti ons — This ser vice connection kit cons ists of a 1 / 2 - - in electrical bulkhea d connec tor a nd a 1 1 / 2 - - in electrical bulkhead connec tor , all fa ctory - - insta lle d to the basepan cover pla te. Remove the c over pla te from t he shipping brac ket and atta ch to ba sepan with 8 scr ...
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Bryant 548J*14D - page 16
16 Un it witho ut Th ru- - Bas e Con nection Kit — Pass the t hermosta t c ontrol wire s through t he bushing on the unit end pane l. Route t he wire through t he snap - - in wire tie and up t o the web bushing ne ar the cont rol box. Route the wire through the bushing and into the bot tom left side of the cont rol box aft er rem oving one of the ...
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Bryant 548J*14D - page 17
17 HEA TER MOUNTING BRACKET HEATER MODULE (LOCA TION 2) HEATER MODULE (LOCA TION 1) SINGLE POINT BOX MOUNTING SCREW SINGLE POINT BOX HEA TER COVERS MANUAL RESET LIMIT SWITCH DISCONNECT MOUNTING LOCA TION C10029 Fi g. 29 - - T ypi ca l Com pone nt Loc at io n Single Po int Boxes When heaters are installed, pow er wiring to bo th h eaters and the res ...
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Bryant 548J*14D - page 18
18 NOTE: Optional Outdoor T emperature Control at One Heater Stage – Move either heater wire to this terminal and connect outdoor temperature switch between 2nd and 3rd terminals. C10354 Fig. 31 - - Access ory Elect ric Heater Con trol C onnect ion s Outdoor Air Enthalp y Contr ol (PNO 33CSENT HSW) The entha lpy c ontrol (33CSENTHSW) i s avai lab ...
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Bryant 548J*14D - page 19
19 R TU - - MP Control System The R T U- - MP cont roller, s ee Fig. 33, provides expanded stand - - alone opera tion of the HV AC system plus connec tion and c ontrol t hrough com munic ati on with several Building Autom ati on Systems (BAS) through popular thi rd - - party ne twork systems. The avai labl e network systems a re BACnet MP/TP , Modb ...
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Bryant 548J*14D - page 20
20 C10322 Fig. 35 - - R TU - - MP System Control W i ring Diagram 548J*14D ...
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Bryant 548J*14D - page 21
21 T abl e 2 – RTU- - MP Cont roll e r Inputs and O utputs POI NT N AME BA Cnet OB JECT NAME TYPE OF I/O CON NECT IO N 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 Thermistor) J2 - - - 1, 2 Loca l Outside Air T emperat ure Sensor oatsens A I (10K Th ermistor) J2 ...
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Bryant 548J*14D - page 22
22 Out doo r Air T emperatu re (OA T) Sen sor — The OA T is fact ory - - m ounted i n the E conoMi$er2 (FIOP or acces sory) . It is a n ominal 10 k oh m thermis tor attached to an eyelet moun ting ring . EconoMi$e r2 — The R TU - - MP cont rol is used with E conoMi$er2 (opt ion or access ory) for outdoor air management. The damper pos ition is ...
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Bryant 548J*14D - page 23
23 SEN J20-1 J20-2 SEN SET Jumper J20-3 SET C08461 Fig. 40 - - R TU - - MP T- - 56 Sensor Connections Co nn ect T - - 59: The T - - 59 space sensor requi res a separat e, i solate d power s upply of 24 V AC. S ee Fig. 41 for interna l connec tions at the T - - 59. Connect the SEN terminal (BLU ) to R TU - - MP J20- - 1. Connect the COM terminal (B ...
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Bryant 548J*14D - page 24
24 T o connect the sens or to the contro l, identify the positiv e (4 to 20 mA) and ground (SIG COM) terminal s on t he sensor . See Fig. 42. Connect the 4- - 20 m A terminal to R TU- - MP J4- - 2 and conn ect the SIG C OM terminal to R TU - - MP J 4- - 3. See Fig. 43. SEN COM J4-2 J4-3 IAQ Sensor 24 V AC C08462 Fig. 43 - - RTU- - MP / Indoor C O 2 ...
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Bryant 548J*14D - page 25
25 Power Ex hau st (ou tpu t): Connect the access ory P ower Exhaust cont act or coil (s) per Fig. 46. Power Exhaust J1 1-3 C TAN PEC CTB THERMOST A T GRA C10362 Fi g. 46 - - RTU- - MP Po wer Exha ust Conne ct io ns Space R elative Humidity Sens or - - The RH s ensor is no t used with 548J*14D models at this time. Com munica tio n W iring - - Pr ot ...
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Bryant 548J*14D - page 26
26 C07170 Fig. 48 - - BACview 6 Ha ndhel d Conne c ti ons T able 3 – LEDs The LEDs on the R TU- - MP s how th e statu s of cer tain fun ctions If th is LE D is o n... Statu s is... Power The R TU MP has p ower Rx The RTU MP is receiving data from the network segment Tx The R TU MP is tran smittin g data ov er the netw ork segmen t DO# The digital ...
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Bryant 548J*14D - page 27
27 NOTE : Contac t your Brya nt appli cat ions engi neer for detai ls on configura tion of R TU - - MP , ope rati ng s equence s and trouble shooting inform ati on , as well as d etails o n configura tion and t roubleshooti ng of connec ted ne tworks. Smoke D etecto rs Smoke detec tors are avai labl e as factory - - insta lle d options on 548J*14D ...
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Bryant 548J*14D - page 28
28 Air is introduce d to the duct smoke de tec tor sensor ’ s sensing cham ber through a sa mpling t ube tha t ext ends into the HV AC d uct and is dir ected back into the ven tilation system through a (shorter) exhaust tube . The difference in air pres sure between the two tubes pulls th e sampled air through the sensing c hambe r . When a suf f ...
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Bryant 548J*14D - page 29
29 Completing Installation of Return Air Smoke Sensor: 1. Unscrew t he two screws holdi ng the Return Air Sensor detect or plate. See Fig. 53. Save the scre ws. 2. Re move t he Return Air Sensor and i ts dete ctor pl ate . 3. Rotate the det ect or plate so the sensor is facing out- wards and the sam pling tube connect ion is on the bot- tom. See Fi ...
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Bryant 548J*14D - page 30
30 T able 4 – U nit W ire/Fus e or HACR B rea ker Sizin g Da ta UNI T N O M . V --- P h --- H z IFM TY PE ELEC. HTR PE NO C .O. or U NPW R C .O. CRHEA TER ***A0 0 Nom (kW) FLA FLA NO P .E . w/ P .E. (p wrd fr/unit) MCA FUSE o r HACR BRKR DISC. SIZE MCA FUSE o r HACR BRKR DISC. SIZE FLA LRA FL A LRA 548J*14D 208/230 - - - 3 - - - 60 STD NONE --- - ...
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Bryant 548J*14D - page 31
31 T abl e 4 – Unit Wire/ F use or H ACR Breake r Si z ing Da ta (c ont ) UNI T N O M . V --- P h --- H z IFM TY PE ELEC. HTR PE w/ PWRD C .O. CRHEA TER ***A0 0 Nom (kW) FLA FLA NO P .E . w/ P .E. (p wrd fr/unit) MCA FUSE o r HACR BRKR DISC. SIZE MCA FUSE o r HACR BRKR DISC. SIZE FLA LRA FL A LRA 548J*14D 208/230 - - - 3 - - - 60 STD NONE --- --- ...
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Bryant 548J*14D - page 32
32 Legend and Notes for T able 4 LEG END: BRKR - - - Circuit breaker CO - - - Conve ni ent o utle t DISC - - - Disconne ct FLA - - - Full load am ps IFM - - - Indoor fa n motor LRA - - - Locked ro tor am ps MCA - - - Minimum cir cuit a mps P E --- P o w e r e x h a u s t PWRD CO - - - Po wered conve nient out let UNP WR CO - - - Un po wer ed conv e ...
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Bryant 548J*14D - page 33
33 Step 12 — I ns tal l Access ori es A vailable access ories include: Roof Curb (must be instal led before uni t) Thru - - base conne cti on kit (must be insta lle d before unit is set on curb; see page 15) Manual outside air dam per T wo- - Positio n motorized o utside air damper (s ee page 9) EconoMi$er IV (with control and inte grate d barome ...
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Bryant 548J*14D - page 34
34 548J*14D ...
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Bryant 548J*14D - page 35
35 548J*14D ...
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Bryant 548J*14D - page 36
36 Manufacturer reserves the right to discontinue, or change at any time, s pecifications or designs without notice and without incur ring obligations. E 2011 Bryan t Heating & Cool ing Sys tems D 7310 W . Mo rr is St. D In dianapolis, IN 46231 Print e d in U.S .A. Edition Date: 01/11 Replaces : II 548J - - - 06 Catal og N o. : II548J - - - 07 ...
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