Bryant 548J*14D - Manual

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...

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...

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...

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 ...

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...

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,...

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...

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...

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...

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...

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...

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...

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...

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 ...

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 -- ...

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...

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...

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...

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...

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...

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 -...

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...

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...