Page 1: Table Of Contents
548J*14D SINGLE PACKAGE ROOFTOP HEAT PUMP WITH WITH PURON (R- -410A) REFRIGERANT SIZE 14 Installation Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS SAFETY CONSIDERATIONS ....
Page 2: Safety Considerations
CUT HAZARD Failure to follow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing heat pump units.
Page 3 Vertical Connections / Economizer Horizontal Connections / Economizer C09895 Fig. 1 - - Unit Dimensional Drawing – Size 14 Unit...
Page 4: Installation
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 (from project plans) or select unit location.
Page 5: Roof Mount
Roof Mount — Check building codes weight requirements. Unit operating weight is shown in Table 1. Table 1 – Operating Weights 548J*14D UNITS LB (KG) Component Base Unit 1370 (620) Economizer Vertical Horizontal Powered Outlet Curb 14--- in/356 mm 24--- in/610 mm Step 2 —...
Page 6 C10365 Fig. 3 - - Roof Curb Details...
Page 7: Step 5 - Field Fabricate Ductwork
“C” “A” SEE DETAIL “A” MAX WEIGHT UNIT 548J*14D 2015 NOTES: 1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used. 2. Dimensions in ( ) are in millimeters. 3. Hook rigging shackles through holes in base rail, as shown in detail “A.” Holes in base rails are centered around the unit center of gravity.
Page 8: Step 7 - - Convert To Horizontal & Connect Ductwork
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 clearance between the curb and the end base rails should in (13 mm). For retrofit applications with curbs CRRFCURB003A01 and 4A01, the unit should be position as shown in Fig.
Page 9: Two Position Damper Hood Removal And Setup
Remove Hood Parts Cut Plastic Ties (2) Places Economizer Fig. 9 - - Economizer Wiring Fig. 10 - - Damper Assembly 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.
Page 10: Economizer Hood And Two- - Position Hood
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 be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.
Page 11: Step 10 - Make Electrical Connections
The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 15. MINIMUM PITCH 1” (25mm) PER BASE RAIL 10’ (3m) OF LINE 2˝ (51) MIN OPEN VENT TO ROOF DRAIN DRAIN PLUG NOTE: Trap should be deep enough to offset maximum unit static difference.
Page 12 Failure to follow this caution may result in equipment damage. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. invalidate any applicable Bryant warranty. WARNING COPPER WIRE ONLY ALUMINUM WIRE A93033...
Page 13: Units Without Factory- - Installed Disconnect
Tag- - out this switch, if necessary. Two types of convenience outlets are offered on 548J*14D models: non- - powered and unit- - powered. Both types provide a 125- - volt GFCI (ground- - fault circuit- - interrupter) duplex receptacle rated at 15- - A behind a hinged waterproof access cover, located on the panel beneath the control box.
Page 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 disconnect box.
Page 15: Factory- - Option Thru- - Base Connections
2. Install power lines to terminal connections as shown in Fig. 22. Field Control Wiring — The 548J*14D unit requires an external temperature control device. This device can be a thermostat emulation device provided as part of a third- - party Building Management System.
Page 16: Unit Without Thru- - Base Conversion Kit
0.14 amp for second- - stage heating, when available. Fig. 28 - - Thermostat Wire Routing Electric Heaters 548J*14D units may be equipped with field- - installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, line- - break limit switches and a control contactor.
Page 17: Single Point Boxes
DISCONNECT MOUNTING LOCATION Single Point Boxes When heaters are installed, power wiring to both heaters and the rest of the unit is connected via the single point box accessory, which will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section.
Page 18: Outdoor Air Enthalpy Control
Fig. 31 - - Accessory Electric Heater Control Connections Outdoor Air Enthalpy Control (PNO 33CSENTHSW) The enthalpy control (33CSENTHSW) is available as a field- - installed accessory to be used with the EconoMi$er2 damper system. The outdoor air enthalpy sensor is part of the enthalpy control.
Page 19: Rtu- - Mp Control System
Fig. 34 - - 548J*14D Control Box Component Locations The RTU- - MP control is factory- - mounted in the 548J*14D unit’s main control box, to the left of the CTB. See Fig. 34. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU- - MP sensors will be made at the Phoenix connectors on the RTU- - MP board.
Page 20 C10322 Fig. 35 - - RTU- - MP System Control Wiring Diagram...
Page 21: Supply Air Temperature (Sat) Sensor
Parallel pins J5--- 1 = J2--- 6, J5--- 3 = J1--- 10, J5--- 5 = J1--- 2 are used for field --- installation. The RTU- - MP controller requires the use of a Bryant space sensor. A standard thermostat cannot be used with the RTU- - MP system.
Page 22: Outdoor Air Temperature (Oat) Sensor
Space Temperature (SPT) Sensors — A field- - supplied Bryant space temperature sensor is required with the RTU- - MP to monitor space temperature. There are 3 sensors available for this application:...
Page 23: Economizer Controls
Jumper 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.
Page 24: Outdoor Air Quality Sensor
J4-2 Fig. 45 - - RTU- - MP / Outdoor CO (33ZCSENCO2) Connections J4-3 On 548J*14D units equipped with factory- - installed Smoke C08462 Detector(s), the smoke detector controller implements the Sensor unit shutdown through its NC contact set connected to the unit’s CTB input.
Page 25: Communication Wiring - - Protocols
0000 but can be changed. The Admin password is 1111 and cannot be changed. There is a 10 minute auto logout if a screen is idle. Contact your Bryant applications engineer for details on navigation and screen content. Virtual BACview:...
Page 26 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 The RTU MP is receiving data from the network segment The RTU MP is transmitting data over the network segment The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows...
Page 27: Smoke Detectors
Smoke D etectors Smoke detectors are available as factory- - installed options on 548J*14D models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air.
Page 28: Smoke Detector Locations
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 sensing chamber.
Page 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 connection is on the bot- tom.
Page 30 Table 4 – Unit Wire/Fuse or HACR Breaker Sizing Data ELEC. HTR CRHEATER ***A00 (kW) NONE 291A00 12.4/16.5 34.4/39.7 288A00,291A00 19.9/26.5 55.3/63.8 294A00 25.2/33.5 69.9/80.6 288A00,294A00 32.7/43.5 90.7/104.7 291A00,294A00 37.6/50.0 104.3/120.3 NONE 291A00 12.4/16.5 34.4/39.7 288A00,291A00 19.9/26.5 55.3/63.8 294A00 25.2/33.5 69.9/80.6 288A00,294A00 32.7/43.5...
Page 31 Table 4 – Unit Wire/Fuse or HACR Breaker Sizing Data (cont) ELEC. HTR CRHEATER ***A00 (kW) NONE 291A00 12.4/16.5 34.4/39.7 288A00,291A00 19.9/26.5 55.3/63.8 294A00 25.2/33.5 69.9/80.6 288A00,294A00 32.7/43.5 90.7/104.7 291A00,294A00 37.6/50.0 104.3/120.3 NONE 291A00 12.4/16.5 34.4/39.7 288A00,291A00 19.9/26.5 55.3/63.8 294A00 25.2/33.5 69.9/80.6 288A00,294A00...
Page 32: Step 11 - - Adjust Factory- - Installed Options
Legend and Notes for Table 4 LEGEND: BRKR --- Circuit breaker --- Convenient outlet DISC --- Disconnect --- Full load amps --- Indoor fan motor --- Locked rotor amps --- Minimum circuit amps --- Power exhaust PWRD CO --- Powered convenient outlet UNPWR CO --- Unpowered convenient outlet NOTES:...
Page 33: Step 12 - Install Accessories
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 damper Two- - Position motorized outside air damper (see page 9) EconoMi$er IV (with control and integrated barometric relief;...
Page 36 E2011 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Printed in U.S.A. Edition Date: 01/11 Catalog No.: II548J---07...

Bryant 548J*14D Installation Instructions Manual

Safety Considerations

Installation

Electric Heaters

RTU- - MP Control System

Smoke Detectors

Step 11 - - Adjust Factory- - Installed Options

Step 12 - Install Accessories

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TABLE OF CONTENTS

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