Bryant 548J A Series Installation Instructions Manual
  1. Manuals
  2. Brands
  3. Bryant Manuals
  4. Heat Pump
  5. 548J A Series
  6. Installation instructions manual
Bryant 548J A Series Installation Instructions Manual

Bryant 548J A Series Installation Instructions Manual

Single package rooftop heat pump with puron (r--410a) refrigerant
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
548J***A
SINGLE PACKAGE ROOFTOP
HEAT PUMP
WITH WITH PURON
SIZES 04 - 07
NOTE: Read the entire instruction manual before starting
the installation.

TABLE OF CONTENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . .
E
(R- -410A) REFRIGERANT
Installation Instructions
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .
. . . . . .
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
.
. . . . . . . . . . . . . . . .
.
. . . . . . . . . . .
. . . . . . . .
. . . . . . . . . . . . . . . . . . .

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal
1
injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for
4
information or assistance. The qualified installer or
4
agency must use factory- - authorized kits or accessories
5
when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when
5
installing.
5
Follow all safety codes. Wear safety glasses and work
7
gloves. Use quenching cloths for brazing operations and
7
have a fire extinguisher available. Read these instructions
8
thoroughly and follow all warnings or cautions attached to
the unit. Consult local building codes and appropriate
8
national electrical codes (in USA, ANSI/NFPA70,
10
National Electrical Code (NEC); in Canada, CSA C22.1)
11
for special requirements.
36
It is important to recognize safety information. This is the
37
safety- - alert symbol
unit and in instructions or manuals, be alert to the
potential for personal injury.
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the
safety- - alert symbol. DANGER identifies the most serious
hazards which will result in severe personal injury or
death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify
unsafe practices, which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced
installation, reliability, or operation.
. When you see this symbol on the

Advertisement

Table of Contents
loading

Related Manuals for Bryant 548J A Series

Summary of Contents for Bryant 548J A Series

  • Page 1: Table Of Contents

    548J***A SINGLE PACKAGE ROOFTOP HEAT PUMP WITH WITH PURON (R- -410A) REFRIGERANT SIZES 04 – 07 Installation Instructions SAFETY CONSIDERATIONS NOTE: Read the entire instruction manual before starting the installation. Improper installation, adjustment, alteration, service, TABLE OF CONTENTS maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal SAFETY CONSIDERATIONS .
  • Page 2 WARNING WARNING PERSONAL INJURY AND ENVIRONMENTAL ELECTRICAL SHOCK HAZARD HAZARD Failure to follow this warning could cause personal Failure to follow this warning could cause personal injury or death. injury or death. Before performing service or maintenance operations Relieve pressure and recover all refrigerant before on unit, always turn off main power switch to unit and system repair or final unit disposal.
  • Page 3 Vertical Connections / Economizer Horizontal Connections / Economizer C09003 Fig. 1 - - Unit Dimensional Drawing – 04 – 07 Size Units...

  • Page 4: Installation

    C09004 Fig. 1 - - Unit Dimensional Drawing – 04 – 07 Size Unit (cont.) INSTALLATION Jobsite Survey 18” (457) Complete the following checks before installation. 42" (1067) 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installa- tion requirements.

  • Page 5: Step 2 - Plan For Sequence Of Unit Installation

    Roof mount — Step 3 — Inspect unit Inspect unit for transportation damage. File any claim Check building codes weight distribution with transportation agency. requirements. Unit operating weight is shown in Table 1. Confirm before installation of unit that voltage, amperage Step 2 —...
  • Page 6 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB001A01 [356] 548J*04-07A 2’ - 0” CRRFCURB002A01 [610] C08560 Fig. 3 - - Roof Curb Details...

  • Page 7: Step 5 - Field Fabricate Ductwork

    should be ducted through the roof deck to comply with applicable fire codes. For units with accessory electric heaters: Horizontal applications require a minimum clearance to combustible surfaces of 1- - in (25 mm) from duct for first 12- - in (305 mm) away from unit.

  • Page 8: Step 7 - - Convert To Horizontal & Connect Ductwork

    Positioning on Curb — Step 8 — Install Outside Air Hood Economizer Hood Removal and Setup - - Factory Position unit on roof curb so that the following clearances Option are maintained: in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear, 0.0 in. 1.
  • Page 9 Two Position Damper Hood Removal and Setup - - 3. Locate the (2) screws holding the metal tray to the Factory Option basepan and remove. Locate and cut the (2) plastic tie- - wraps securing the assembly to the damper. (See 1.

  • Page 10: Step 9 - - Install External Condensate Trap And Line

    Economizer Hood and Two- - Position Hood — filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock NOTE: If the power exhaust accessory is to be installed the filter into place. See Fig. 12. on the unit, the hood shipped with the unit will not be used and must be discarded.

  • Page 11: Step 10 - Make Electrical Connections

    unit disconnect. On a unit without a unit- - mounted disconnect, connect the source leads to compressor contactor C and indoor fan contactor IFC pressure lugs MINIMUM PITCH 1” (25mm) PER BASE RAIL with unit field power leads. 10’ (3m) OF LINE 2˝...
  • Page 12 Units with Factory- - Installed Disconnect — Convenience Outlets — The factory- - installed option disconnect switch is located WARNING in a weatherproof enclosure located under the main control box. The manual switch handle is accessible ELECTRICAL OPERATION HAZARD through an opening in the access panel. Discard the factory test leads (see Fig.
  • Page 13 Mount the weatherproof cover to the backing plate as if the GFCI receptacle does not trip as required. Press the shown in Fig. 18. Remove two slot fillers in the bottom of RESET button to clear the tripped condition. the cover to permit service tool cords to exit the cover. Check for full closing and latching.
  • Page 14 Unit without thru- - base connection kit — electrical components. Such operation would invalidate any applicable Bryant warranty. Pass the thermostat control wires through the hole provided in the corner post; then feed the wires through Field Control Wiring —...
  • Page 15 RACEWAY DISCONNECT MOUNTING LOCATION INDOOR UNIT BLOCK-OFF OUTDOOR ACCESS PANEL ACCESS PANEL PANEL C08133 Fig. 23 - - Typical Access Panel Location HOLE IN END PANEL (HIDDEN) C08027 Fig. 22 - - Field Control Wiring Raceway Not all available heater modules may be used in every unit.
  • Page 16 CONTROL BUSHING SINGLE POINT BOX MOUNTING SCREWS DRIP BOOT BRACKET MOUNTING TRACK SCREWS POWER WIRES FOAM BUSHING FLANGE HEATER RELAYS HEATER MOUNTING SCREWS C08136 C08135 Fig. 26 - - Typical Single Point Installation Fig. 25 - - Typical Module Installation All fuses on 548J***A units are 60- - A.
  • Page 17 RTU- -MP control system The RTU- - MP control is factory- - mounted in the 548J***A unit’s main control box, to the left of the CTB. See Fig. 29. Factory wiring is completed through The RTU- - MP controller, see Fig. 28, provides expanded harnesses connected to the CTB.
  • Page 18 C09015 Fig. 30 - - RTU- - MP System Control Wiring Diagram...
  • Page 19 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 20 Fig. 33 - - RTU- - MP T- - 55 Sensor Connections Space Temperature (SPT) Sensors A field- - supplied Bryant space temperature sensor is Connect T- - 56 - - See Fig. 34 for T- - 56 internal required with the RTU- - MP to monitor space temperature.
  • Page 21 J20-1 Enthalpy Switch ECONO J20-2 MOTOR Jumper ECON J20-3 C08461 Fig. 35 - - RTU- - MP T- - 56 Sensor Connections Factory Wiring Harness C09026 Fig. 37 - - Enthalpy Switch (33CSENTHSW) Connections Connect T- - 59 - - The T- - 59 space sensor requires a separate, isolated power supply of 24 VAC.
  • Page 22 Indoor Air Quality (CO sensor) — The indoor air quality To connect the sensor to the control, identify the positive sensor accessory monitors space carbon dioxide (CO (4 to 20 mA) and ground (SIG COM) terminals on the levels. This information is used to monitor IAQ levels. sensor.
  • Page 23 Power Exhaust (output) OAQ Sensor/RH Sensor Connect the accessory Power Exhaust contactor coil(s) per Fig. 43. J4-5 J4-6 Power Exhaust 24 VAC J11-3 C08463 Fig. 42 - - RTU- - MP / Outdoor CO Sensor (33ZCSENCO2) Connections THERMOSTAT On 548J***A units equipped with factory- - installed Smoke Detector(s), the smoke detector controller C08464...
  • Page 24 There is a 10 minute auto logout if a screen is The LEDs indicate if the controller is speaking to the idle. Contact your Bryant applications engineer for details devices on the network. The LEDs should reflect on navigation and screen content.
  • Page 25 Format the RTU ---MP . Download memory to the RTU ---MP . Replace the RTU ---MP . NOTE: Contact your Bryant applications engineer for System details on configuration of RTU- - MP, operating sequences The smoke detector system consists of a four- - wire and troubleshooting information, as well as details on controller and one or two sensors.
  • Page 26 terminal for connecting to the controller. Each sensor has Air is introduced to the duct smoke detector sensor’s four LEDs (for Power, Trouble, Alarm and Dirty) and a sensing chamber through a sampling tube that extends into manual test/reset button (on the left- - side of the housing). the HVAC duct and is directed back into the ventilation system through a (shorter) exhaust tube.
  • Page 27 Completing Installation of Return Air Smoke Return Air Detector module (shipping position shown)* Sensor: 1. Unscrew the two screws holding the Return Air Sensor detector plate. See Fig. 51. Save the screws. Controller module Screws Flexible Exhaust Tubes Return Air Detector Sampling Tube Sample Tube *RA detector must be moved from shipping position to operating position by installer C07307...
  • Page 28 Table 5 – Unit Wire/MOCP Sizing Data ELECTRIC HEATER NO C.O. or UNPWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 30.7 32.6 3.3/4.4 15.9/18.3 50.6/53.6 60/60 48/51 137/139 52.5/55.5 60/60 51/53 139/141 4.9/6.5...
  • Page 29 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 35.5 37.4 3.3/4.4 15.9/18.3 55.4/58.4 60/60 54/57 142/144 57.3/60.3 60/70 56/59 144/146 4.9/6.5 23.5/27.1...
  • Page 30 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER NO C.O. or UNPWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 36.2 38.1 3.3/4.4 15.9/18.3 56.0/59.0 60/60 54/56 144/146 57.9/60.9 60/70 56/59 146/148...
  • Page 31 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 41.0 42.9 3.3/4.4 15.9/18.3 60.8/63.8 70/80 59/62 149/151 62.7/65.7 80/80 61/64 151/153 6.5/8.7 31.4/36.3...
  • Page 32 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER NO C.O. or UNPWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 41.7 43.6 4.9/6.5 23.5/27.1 71.0/75.5 80/80 67/72 169/172 72.9/77.4 80/80 70/74 171/174...
  • Page 33 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 46.5 48.4 4.9/6.5 23.5/27.1 75.8/80.3 80/90 73/77 174/177 77.7/82.2 80/100 75/79 176/179 6.5/8.7 31.4/36.3...
  • Page 34 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER NO C.O. or UNPWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 30.5 32.4 4.9/6.5 13.6/15.6 47.5/50.0 60/60 45/47 160/162 49.4/51.9 60/60 47/50 162/164...
  • Page 35 Table 5 — Unit Wire/MOCP Sizing Data (cont) ELECTRIC HEATER w/ PWRD C.O. NO P .E. w/ P .E. (pwrd fr/unit) TYPE DISC. SIZE DISC. SIZE (kW) MOCP MOCP 35.3 37.2 4.9/6.5 13.6/15.6 52.3/54.8 60/60 51/53 165/167 54.2/56.7 60/60 53/55 167/169 7.9/10.5 21.9/25.3...

  • Page 36: Step 11 - Adjust Factory- -Installed Options

    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 37: Step 12 - Install Accessories

    Step 12 — Install Accessories Available accessories include: Roof Curb Thru- - base connection kit (must be installed before unit is set on curb) Manual outside air damper Two- - Position motorized outside air damper EconoMi$er IV (with control and integrated barometric relief) EconoMi$er2 (without control/for external signal and integrated barometric relief)
  • Page 40 Catalog No. II548J---01 E2009 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 02/10/09 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

This manual is also suitable for:

548j-04a548j-05a548j-06a548j-07a

Table of Contents