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548J***A
SINGLE PACKAGE ROOFTOP
HEAT PUMP
SIZES 04 - - 07 with PURON
NOTE: Read the entire instruction manual before starting
the installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
Rated Indoor Airflow (cfm)
INSTALLATION
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Jobsite Survey
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Step 1 - - Plan for Unit Location
Roof Mount
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Step 2 - - Plan for Sequence of Unit Installation
Curb- - Mount Installation
Pad- - Mount Installation
Frame- - Mount Installation
Step 3 - - Inspect Unit
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Step 4 - - Provide Unit Support
Roof Curb Mount
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Slab Mount (Horizontal Units Only)
Alternate Unit Support
(In Lieu of Curb or Slab Mount)
Step 5 - - Field Fabricate Ductwork
For Units with Accessory Electric Heaters
Step 6 - - Rig and Place Unit
Positioning on Curb
Step 7 - - Convert to Horizontal and Connect
Ductwork
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Step 8 - - Install Outside Air Hood
Economizer and Two Position Damper Hood
Package Removal and Setup — Factory Option
Economizer Hood and Two- - Position Hood
Step 9 - - Units with Hinged Panels Only
Step 10 - - Install External Condensate Trap
and Line
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Step 11 - - Make Electrical Connections
Field Power Supply
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Units with Factory- - Installed
Non- - Fused Disconnect
R
(R- -410A) REFRIGERANT
Installation Instructions
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Units without Factory- - Installed
Non- - Fused Disconnect
All Units
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Convenience Outlets
2
Factory- - Option Thru- - Base Connections
3
Units without Thru- - Base Connections
6
Field Control Wiring
6
Thermostat
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6
Unit without Thru- - Base Connection Kit
6
Heat Anticipator Settings
6
Electric Heaters
7
Single Point Boxes & Supplementary Fuses
7
Single Point Boxes without Fuses
7
Low- - Voltage Control Connections
7
EconoMi$er X (Factory- - Installed Option)
7
RTU Open Control System
7
Supply Air Temperature (SAT) Sensor
7
Outdoor Air Temperature (OAT) Sensor
EconoMi$er2
7
Field Connections
9
Space Temperature (SPT) Sensors
9
Indoor Air Quality (CO
9
Outdoor Air Quality Sensor
9
Smoke Detector/Fire Shutdown (FSD)
Connecting Discrete Inputs
10
Communication Wiring - - Protocols
11
General
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Local Access
11
RTU Open Troubleshooting
11
Outdoor Air Enthalpy Control
12
Differential Enthalpy Control
12
Return Air Enthalpy Sensor
13
Smoke Detectors
13
Step 12 - - Adjust Factory- - Installed Options
Step 13 - - Install Accessories
13
UNIT START- - UP CHECKLIST
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) Sensor
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Summary of Contents for Bryant 548JE09D000A2A0AD
- Page 1 548J***A SINGLE PACKAGE ROOFTOP HEAT PUMP SIZES 04 - - 07 with PURON (R- -410A) REFRIGERANT Installation Instructions NOTE: Read the entire instruction manual before starting Units without Factory- - Installed Non- - Fused Disconnect ..... the installation.
- Page 2 SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, ELECTRICAL SHOCK HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal Failure to follow this warning could cause personal injury or property damage. Consult a qualified installer, injury or death.
- Page 3 Rated Indoor Airflow (cfm) Model Number Full Load Airflow (cfm) 548J*04A 1200 The table to the right lists the rated indoor airflow used 548J*05A 1600 for the AHRI efficiency rating for the units covered in this 548J*06A 2100 document. 548J*07A 2100 Position: 10 11 12 13 14 15 16 17...
- Page 4 C14198 Fig. 2 - - Unit Dimensional Drawing – 04 – 07 Size Units...
- Page 5 C14199 Fig. 2 - - Unit Dimensional Drawing – 04 – 07 Size Unit (cont.)
- Page 6 C08337 LOCATION DIMENSION CONDITION 48--- in (1219 mm) Unit disconnect is mounted on panel 18--- in (457 mm) No disconnect, convenience outlet option 18--- in (457) mm Recommended service clearance 12--- in (305 mm) Minimum clearance 42--- in (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36--- in (914 mm) Surface behind servicer is electrically non--- conductive (e.g., wood, fiberglass)
- Page 7 Table 1 – Operating Weights 548J***A UNITS LB (KG) Component Base Unit 505 (229) 510 (231) 590 (268) 630 (286) Economizer Vertical 80 (36) 80 (36) 80 (36) 80 (36) Horizontal 105 (48) 105 (48) 105 (48) 105 (48) Powered Outlet 32 (15) 32 (15) 32 (15)
- Page 8 C13310 Fig. 5 - - Roof Curb Details...
- Page 9 Step 5 — Field Fabricate Ductwork Step 6 — Rig and Place Unit Cabinet return-air static pressure (a negative condition) Keep unit upright and do not drop. Spreader bars are not shall not exceed 0.35 in. wg (87 Pa) with economizer or required if top crating is left on unit.
- Page 10 C06005 DIMENSIONS MAX WEIGHT UNIT 548J*04A 74.38 1889 36.25 33.38 548J*05A 74.38 1889 36.25 33.38 548J*06A 74.38 1889 35.63 41.38 1051 548J*07A 74.38 1889 37.25 41.38 1051 NOTES: 1. Dimensions in ( ) are in millimeters. 2. 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 11 Step 8 — Install Outside Air Hood 4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the Economizer and Two Position Damper Hood steps outlined in Economizer Hood and Two–Position Package Removal and Setup - - Factory Option Hood, below.
- Page 12 Step 10 — Install External Condensate Trap and 4. Insert the hood divider between the hood sides. See Fig. 11 and Fig. 12. Secure hood divider with 2 Line screws on each hood side. The hood divider is also The unit has one -in.
- Page 13 Step 11 — Make Electrical Connections Units Without Non-Fused Disconnect Option WARNING (3 Phase Indoor Motor) (1 Phase Indoor Motor and 1 Phase Unit) ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Do not use gas piping as an electrical ground. Unit Disconnect cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of...
- Page 14 Units Without Factory- - Installed Non- - Fused Disconnect — When installing units, provide a disconnect switch per NEC (National Electrical Code) of adequate size. 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.
- Page 15 Non- - powered type: This type requires the field Pwd-CO Transformer Convenience installation of a general- - purpose 125- - volt 15- - A circuit Outlet powered from a source elsewhere in the building. Observe GFCI national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and Pwd-CO location.
- Page 16 - - in bulkhead connector enables the low- - voltage control wires to pass through the basepan. The - - in electrical Select a Bryant- - approved accessory thermostat. When bulkhead connector allows the high- - voltage power wires electric heat is installed in the 548J***A unit, the to pass through the basepan.
- Page 17 Table 2 – Heater Model Number Bare Heater Model Number Heater Sales Package PNO Includes: Bare Heater Carton and packing materials Installation sheet Not all available heater modules may be used in every Typical Central unit. Use only those heater modules that are UL listed for Thermostat Terminal use in a specific size unit.
- Page 18 to accessory heater and Single Point Box installation DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH instructions for details on tap connections. LOCATION HEATER COVERS CONTROL BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT BRACKET MOUNTING...
- Page 19 RTU Open Control System The RTU Open controller is an integrated component of the Bryant rooftop unit. Its internal application programming provides optimum performance and energy efficiency. RTU The RTU Open control is factory- - mounted in the 548J Open enables the unit to run in 100% stand- - alone control unit’s main control box, to the left of the CTB.
- Page 20 C14268 Fig. 33 - - RTU Open System Control Wiring Diagram...
- Page 21 Parallel pins J5--- 1 = J2--- 6, J5--- 3 = J1--- 10, J5--- 5 = J1--- 2 are used for field --- installation. The RTU Open controller requires the use of a Bryant space sensor. A standard thermostat cannot be used with the RTU Open system.
- Page 22 Connect T- - 56: See Fig. 37 for T- - 56 internal connections. Install a jumper between SEN and SET terminals as SPT sensors available from Bryant are resistive input illustrated. Connect T- - 56 terminals to RTU Open J20- - 1, non-communicating (T55, T56, and T59) sensors.
- Page 23 Connect T- - 59: The T- - 59 space sensor requires a Do not mount the IAQ sensor in drafty areas such as near separate, isolated power supply of 24 VAC. See Fig. 39 supply ducts, open windows, fans, or over heat sources. for internal connections at the T- - 59.
- Page 24 Outdoor Air Quality Sensor Space Relative Humidity Sensor or Humidistat — (PNO 33ZCSENCO2 plus weatherproof enclosure) — The Space Relative Humidity Sensor is not used with 548J The outdoor air CO sensor is designed to monitor carbon units at this time. dioxide (CO ) levels in the outside ventilation air and Smoke Detector/Fire Shutdown (FSD) —...
- Page 25 Different protocols exist to provide different switch settings. kinds of information for different applications. In the BAS Contact your Bryant applications engineer for more application, many different protocols are used, depending detailed information on protocols, 3rd party wiring, and on manufacturer.
- Page 26 Local Access Field Assistant Field Assistant is a computer program included with the Wall Mounted Equipment Touch purchase of the Tech Tool Kit (USB-TKIT). This is a field Tech Tool to set-up, service, or download application The Equipment Touch is a wall mounted interface used to software to the RTU Open controller and includes a USB connect to the RTU Open to access the control Link Cable.
- Page 27 NOTE: Refer to the RTU Open Multi- - Protocol Controller Enthalpy Controls, Start- - Up, Operation and Troubleshooting manual Switch PL6-1 (24-V) Contact your Bryant applications engineer for details on configuration and troubleshooting of connected networks. PL6-4 (COM) Outdoor Air Enthalpy Control CTB ECON...
- Page 28 Return Air PL6-1 (24-V) Smoke Detector – 4-20 (as shipped) Main PL6-4 (COM) + VDC CTB ECON (RTU Open: to J2-6) Outside Air Enthalpy Switch + 24-36 Return Air VDC In Enthalpy Sensor – 4-20 Main C11170 Fig. 49 - - Outside and Return Air Enthalpy Sensor Wiring To wire the return air enthalpy sensor, perform the following:...
- Page 29 Legend and Notes for Table 5 LEGEND: Example: Supply voltage is 230-3-60 --- Convenient outlet AB = 224 v DISC --- Disconnect BC = 231 v --- Full load amps AC = 226 v --- Indoor fan motor --- Locked rotor amps --- Minimum circuit amps (224 + 231 + 226) Average Voltage =...
- Page 35 Unit Without Economizer or Economizer 2 Position Damper 2 Position Damper C08631 Fig. 52 - - EconoMi$ert IV Wiring Step 12 — Adjust Factory- -Installed Options EconoMi$er2 (without control/for external signal and integrated barometric relief) Smoke Detectors — Power Exhaust Smoke detector(s) will be connected at the Controls Differential dry- - bulb sensor (EconoMi$er IV) Connections Board,...
- Page 38 Catalog No. II548J---4---7---01 E2015 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 01/15 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
- Page 39 UNIT START-UP CHECKLIST (Remove and Store in Job File) MODEL NO.: SERIAL NO.: I. PRE-START-UP j VERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT j VERIFY INSTALLATION OF OUTDOOR AIR HOOD j VERIFY INSTALLATION OF FLUE EXHAUST AND INLET HOOD j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS j VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT j CHECK THAT INDOOR- - AIR FILTERS ARE CLEAN AND IN PLACE...
- Page 40 Catalog No. II548J---4---7---01 E2015 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 01/15 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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