Bryant 548J*14D - Manuals - manualsarea.com

Page 2 - SAFETY CONSIDERATIONS; WARNING

2 SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for inf...

Page 4 - INSTALLATION; Jobsite Survey; Step 1 — Plan for Unit Location; NOTE

4 C10364 Fig. 1 -- Unit Dimensional Drawing – Size 14 Unit (cont.) INSTALLATION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installa- tion requirements. 2. Determine unit location (f...

Page 5 - Ductwork must be attached to curb and

5 Roof Mount — Check building codes for weight distribution requirements. Unit operating weight is shown in Table 1. Table 1 – Operating Weights 548J*14D UNITS LB (KG) Component 14D Base Unit 1370 (620) Economizer Vertical 100 (45) Horizontal 115 (52) Powered Outlet 32 (15) Curb 14 --- in/356 mm 180...

Page 7 - Step 5 — Field Fabricate Ductwork; Do not connect ductwork to unit.; For Units with Accessory Electric Heaters —; Step 6 — Rig and Place Unit; UNIT DAMAGE HAZARD; CAUTION; DETAIL “A”

7 A-B 0.5” (13) B-C 1.0” (25) A-C 1.0” (25) MAXIMUM ALLOWABLE DIFFERENCE IN. (MM) A B C C10001 Fig. 4 -- Unit Leveling Tolerances Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg (112 Pa) w...

Page 8 - Positioning on Curb —; Step 7 — Convert to Horizontal and Connect; without; Step 8 — Install Outside Air Hood; Factory Option —; Economizer Hood and Two–Position Hood

8 Positioning on Curb — For full perimeter curbs CRRFCURB072A00 and 073A00, the clearance between the roof curb and the front and rear base rails should be 1 / 4 in (6.4 mm). The clearance between the curb and the end base rails should be 1 / 2 in (13 mm). For retrofit applications with curbs CRRFCU...

Page 9 - Two Position Damper Hood Removal and Setup --; Economizer Hood and Two–Position

9 Economizer Cut Plastic Ties(2) Places Remove Hood Parts C10005 Fig. 9 -- Economizer Wiring Two Position Damper Hood Removal and Setup -- Factory Option — 1. The hood is shipped in knock--down form and assembled to a metal support tray using plastic stretch wrap. Located in the return air compartme...

Page 10 - Be careful not; Step 9 — Install External Condensate Trap and

10 Economizer Hood and Two--Position Hood —NOTE : If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not beused and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly. 1. The indoor coil access panel will be used as ...

Page 11 - All units must have an external trap for condensate; Step 10 — Make Electrical Connections; ELECTRICAL SHOCK HAZARD; Do not use gas piping as an electrical ground.

11 The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 15. NOTE: Trap 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 DRAI...

Page 12 - FIRE HAZARD

12 C10014 Fig. 19 -- Mounting Position for Field Disconnects (over 100A) C10013 Fig. 20 -- Mounting Position for Field Disconnects (up to 100A) All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power supply,...

Page 13 - Units Without Disconnect Option; Convenience Outlets —

13 Units Without Factory--Installed Disconnect — When installing units, provide a disconnect switch of adequate size per NEC (National Electrical Code). Disconnect sizing data is provided on the unit informative plate. Locate on unit cabinet or within sight of the unit per national or local codes. D...

Page 14 - ELECTRICAL OPERATION HAZARD; Installing Weatherproof Cover:

14 the transformer; however, the conduit must be routed so that all wiring is either in the conduit or behind the access panel. If the convenience outlet transformer is connected to the line side of the factory disconnect option, route the wires through the web bushing located on the bottom of the d...

Page 16 - Electric Heaters

16 Unit without Thru--Base Connection Kit — Pass the thermostat control wires through the bushing on the unit end panel. Route the wire through the snap--in wire tie and up to the web bushing near the control box. Route the wire through the bushing and into the bottom left side of the control box af...

Page 17 - Single Point Boxes; Heater and Supplementary Fuses —

17 HEATERMOUNTINGBRACKET HEATERMODULE(LOCATION 2) HEATERMODULE(LOCATION 1) SINGLE POINTBOXMOUNTINGSCREW SINGLEPOINT BOX HEATERCOVERS MANUAL RESETLIMIT SWITCH DISCONNECTMOUNTINGLOCATION C10029 Fig. 29 -- Typical Component Location Single Point Boxes When heaters are installed, power wiring to both he...

Page 18 - Outdoor Air Enthalpy Control; Differential Enthalpy Control —

18 NOTE: Optional Outdoor Temperature Controlat One Heater Stage – Move either heater wire to this terminal and connect outdoor temperature switch between 2nd and 3rd terminals. C10354 Fig. 31 -- Accessory Electric Heater Control Connections Outdoor Air Enthalpy Control (PNO 33CSENTHSW) The enthalpy...

Page 21 - Table 2 – RTU--MP Controller Inputs and Outputs; Temperature (SAT) Sensor on Small Rooftop Units

21 Table 2 – RTU--MP Controller Inputs and Outputs POINT NAME BACnet OBJECT NAME TYPE OF I/O CONNECTION PIN NUMBERS INPUTS Space Temperature Sensor sptsens AI (10K Thermistor) J20 --- 1, 2 Supply Air Temperature sat AI (10K Thermistor) J2 --- 1, 2 Local Outside Air Temperature Sensor oatsens AI (10K...

Page 22 - Field Connections

22 Outdoor Air Temperature (OAT) Sensor — The OAT is factory--mounted in the EconoMi$er2 (FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring. EconoMi$er2 — The RTU--MP control is used with EconoMi$er2 (option or accessory) for outdoor air management. The dampe...

Page 23 - SET; Economizer Controls —; Wiring the Indoor Air Quality Sensor:

23 SEN J20-1 J20-2 SEN SET Jumper J20-3 SET C08461 Fig. 40 -- RTU--MP T--56 Sensor Connections Connect T--59: The T--59 space sensor requires a separate, isolated power supply of 24 VAC. See Fig. 41 for internal connections at the T--59. Connect the SEN terminal (BLU) to RTU--MP J20--1. Connect the ...

Page 24 - COVER REMOVED

24 To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 42. Connect the 4--20 mA terminal to RTU--MP J4--2 and connect the SIG COM terminal to RTU--MP J4--3. See Fig. 43. SEN COM J4-2 J4-3 IAQ Sensor 24 VAC C08462 Fig. 43 -- ...

Page 25 - BACview; Communication LEDs; SW3 Protocol Selection; Baud Rate Selections

25 Power Exhaust (output): Connect the accessory Power Exhaust contactor coil(s) per Fig. 46. Power Exhaust J11-3 C TAN PEC CTB THERMOSTAT GRA C10362 Fig. 46 -- RTU--MP Power Exhaust Connections Space Relative Humidity Sensor -- The RH sensor is not used with 548J*14D models at this time. Communicat...

Page 26 - The LEDs on the RTU--MP show the status of certain functions; Tx

26 C07170 Fig. 48 -- BACview 6 Handheld Connections Table 3 – LEDs The LEDs on the RTU--MP show the status of certain functions If this LED is on... Status is... Power The RTU MP has power Rx The RTU MP is receiving data from the network segment Tx The RTU MP is transmitting data over the network se...

Page 27 - Smoke D

27 NOTE : Contact your Bryant applications engineer for details on configuration of RTU--MP, operating sequencesand troubleshooting information , as well as details on configuration and troubleshooting of connected networks. Smoke D etectors Smoke detectors are available as factory--installed option...

Page 28 - Smoke Detector Locations

28 Air is introduced to the duct smoke detector sensor’s sensing chamber through a sampling tube that extends into the HVAC duct and is directed back into the ventilation system through a (shorter) exhaust tube. The difference in air pressure between the two tubes pulls the sampled air through the s...

Page 29 - Completing Installation of Return Air Smoke Sensor:; Sampling Tube; Additional Application Data —

29 Completing Installation of Return Air Smoke Sensor: 1. Unscrew the two screws holding the Return Air Sensor detector plate. See Fig. 53. Save the screws. 2. Remove the Return Air Sensor and its detector plate.3. Rotate the detector plate so the sensor is facing out- wards and the sampling tube co...

Page 30 - : See page 32 for table legend and notes.

30 Table 4 – Unit Wire/Fuse or HACR Breaker Sizing Data UN IT N O M .V --- P h --- H z IF M TY P E ELEC. HTR PE NO C.O. or UNPWR C.O. CRHEATER ***A00 Nom (kW) FLA FLA NO P.E. w/ P.E. (pwrd fr/unit) MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 548J *14D 208/ 230 -...

Page 32 - Legend and Notes for Table 4; IV Wiring; Step 11 — Adjust Factory--Installed Options; Smoke Detectors —

32 Legend and Notes for Table 4 LEGEND: BRKR --- Circuit breaker CO --- Convenient outlet DISC --- Disconnect FLA --- Full load amps IFM --- Indoor fan motor LRA --- Locked rotor amps MCA --- Minimum circuit amps PE --- Power exhaust PWRD CO --- Powered convenient outlet UNPWR CO --- Unpowered conve...

Page 33 - Step 12 — Install Accessories; Available accessories include:

33 Step 12 — Install Accessories Available accessories include: Roof Curb (must be installed before unit)Thru--base connection kit (must be installed before unit is set on curb; see page 15)Manual outside air damperTwo--Position motorized outside air damper (see page 9)EconoMi$er IV (with control an...