Bryant 558J Series Installation Instructions Manual Download Page 27

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Communication Wiring -- Protocols

General —

Protocols are the communication languages spoken by

control devices. The main purpose of a protocol is to

communicate information in the most efficient method

possible. Different protocols exist to provide different

kinds of information for different applications. In the BAS

application, many different protocols are used, depending

on manufacturer. Protocols do not change the function of

a controller; just make the front end user different.
The RTU Open can be set to communicate on four

different protocols: BACnet, Modbus, N2, and LonWorks.

Switch 3 (SW3) on the board is used to set protocol and

baud rate. Switches 1 and 2 (SW1 and SW2) are used to

set the board’s network address. See Fig. 46 and 47 for

protocol switch settings and address switches. The 3rd

party connection to the RTU Open is through plug J19.

See Fig. 48 for wiring.

NOTE

: Power must be cycled after changing the SW1--3

switch settings.
Contact your Bryant applications engineer for more

detailed information on protocols, 3rd party wiring, and

networking.

SW3 Protocol Selection

PROTOCOL

DS8

DS7

DS6

DS5

DS4

DS3

DS2

DS1

BACnet MS/TP

(Master)

Unused

OFF

Select Baud Select Baud

Modbus

(Slave)

Unused

OFF

Select Baud Select Baud

(Slave)

Unused

OFF

LonWorks

Unused

OFF

NOTE:
DS = Dip Switch
BACnet MS/TP SW3 example shown

Baud Rate Selections

BAUD RATE

DS2

DS1

9600

OFF

19,200

OFF

38,400

OFF

76,800

C07166

Fig. 46 -- RTU Open SW3 Dip Switch Settings

C10815

Fig. 47 -- RTU Open Address Switches

C10816

Fig. 48 -- Network Wiring

558J

Summary of Contents for 558J Series

Page 1: ...d Disconnect 12 Units without Factory Installed Disconnect 12 All Units 12 Convenience Outlets 13 Factory Option Thru Base Connections 14 Units without Thru Base Connections 14 Field Control Wiring 15 Thermostat 15 Unit without Thru Base Connection Kit 15 Heat Anticipator Settings 15 Electric Heaters 15 Single Point Boxes Supplementary Fuses 16 Single Point Boxes without Fuses 16 Low Voltage Contr...

Page 2: ...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 ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death Before performing service or maintenance op...

Page 3: ...3 Horizontal Connections Economizer Vertical Connections Economizer C11351 Fig 1 Dimensional Drawing 558J ...

Page 4: ...4 C11352 Fig 1 Unit Dimensional Drawing cont 558J ...

Page 5: ...at provides adequate height to allow installation of condensate trap per requirements Refer to Step 9 Install External Condensate Trap and Line for required trap dimensions Roof Mount Check building codes for weight distribution requirements Unit operating weight is shown in Table 1 Step 2 Plan for Sequence of Unit Installation The support method used for this unit will dictate different sequences...

Page 6: ...of Curb Installation Instructions for additional information as required Install insulation cant strips roofing felt and counter flashing as shown Ductwork must be attached to curb and not to the unit The accessory thru the base power and gas connection package must be installed before the unit is set on the roof curb If electric and control wiring is to be routed through the basepan attach the ac...

Page 7: ...NPT ROOFCURB ACCESSORY A UNIT SIZE CRRFCURB001A01 1 2 356 CRRFCURB002A01 2 0 610 558J 04 07 NOTES 1 Roof curb accessory is shipped disassembled 2 Insulated panels 3 Dimensions in are in millimeters 4 Roof curb galvanized steel 5 Attach ductwork to curb flanges fo duct rest on curb 6 Service clearance 4 ft on each side 7 Direction of airflow C11353 Fig 3 Roof Curb Details 558J ...

Page 8: ... first 12 in 305 mm away from unit Outlet grilles must not lie directly below unit discharge NOTE A 90 degree elbow must be provided in the ductwork to comply with UL Underwriters Laboratories code for use with electric heat PERSONAL INJURY HAZARD Failure to follow this warning could cause personal injury For vertical supply and return units tools or parts could drop into ductwork and cause an inj...

Page 9: ...ing approximately equal to Fig 3 section C C Although unit is weatherproof guard against water from higher level runoff and overhangs UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage All panels must be in place when rigging Unit is not designed for handling by fork truck CAUTION After unit is in position remove rigging skids and shipping materials Step 7 Convert to ...

Page 10: ... and Two Position Damper Hood Parts Location 4 Carefully lift the hood assembly with metal tray through the filter access opening and assemble per the steps outlined in Economizer Hood and Two Position Hood below 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 alu...

Page 11: ...INE BASE RAIL OPEN VENT TO ROOF DRAIN DRAIN PLUG ROOF CURB SEE NOTE 2 51 MIN C08022 Fig 13 Condensate Drain Piping Details All units must have an external trap for condensate drainage Install a trap at least 4 in 102 mm deep and protect against freeze up If drain line is installed downstream from the external trap pitch the line away from the unit at 1 in per 10 ft 25 mm in 3 m of run Do not use a...

Page 12: ...e satisfaction Do not connect aluminum wire between disconnect switch and 558J unit Use only copper wire See Fig 15 COPPER WIRE ONLY ELECTRIC DISCONNECT SWITCH ALUMINUM WIRE A93033 Fig 15 Disconnect Switch and Unit Units Without Factory Installed Disconnect When installing units provide a disconnect switch per NEC National Electrical Code of adequate size Disconnect sizing data is provided on the ...

Page 13: ...posed Press the gasket over the screw heads Slip the backing plate over the screw heads at the keyhole slots and align with the gasket tighten the two screws until snug do not over tighten Mount the weatherproof cover to the backing plate as shown in Fig 17 Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover Check for full closing and latching RECEPTAC...

Page 14: ...ry Option Thru Base Connections This service connection kit consists of a 1 2 in electrical bulkhead connector and a 3 4 in electrical bulkhead connector all factory installed in the embossed raised section of the unit basepan in the condenser section The 3 4 in bulkhead connector enables the low voltage control wires to pass through the basepan The 1 2 in electrical bulkhead connector allows the ...

Page 15: ...Y2 to Y2 connection required on single stage cooling units when integrated economizer function is desired Note 3 W2 connection not required on units with single stage heating Field Wiring Central Terminal Board C08575 Fig 21 Low Voltage Connections Unit without Thru Base Connection Kit Pass the thermostat control wires through the hole provided in the corner post then feed the wires through the ra...

Page 16: ...tition separating the indoor section with electric heaters from the outdoor section The Single Point Box has a hinged access cover See Fig 26 The Single Point Box also includes a set of power taps and pigtails to complete the wiring between the Single Point Box and the unit s main control box terminals Refer to the accessory heater and Single Point Box installation instructions for details on tap ...

Page 17: ...ce RH above control setpoint or a combination thermostat humidistat control device such as Bryant s EDGER Pro Thermidistat with isolated contact set for dehumidification control To connect a field supplied humidistat 1 Route the humidistat 2 conductor cable field sup plied through the hole provided in the unit corner post 2 Feed wires through the raceway built into the corner post see Fig 22 to th...

Page 18: ...ring Rc Rh W1 G Y2 C O W2 B Y1 OAT RRS SRTN HUM D1 D2 V Vg X C G W2 W1 Y2 Y1 R Edge Programable Thermostat Unit CTB THERMOSTAT Connection not required Perfect Humidity FIOP C09501 Fig 30 Typical Rooftop Unit with Perfect Humidity Dehumidification System with Edge Programmable Thermostat 558J ...

Page 19: ...oMi er2 package The RTU Open controller is an integrated component of the Bryant rooftop unit Its internal application programming provides optimum performance and energy efficiency RTU Open enables the unit to run in 100 stand alone control mode Bryant s I Vu Open network or a Third Party Building Automation System BAS On board DIP switches allow you to select your protocol and baud rate of choic...

Page 20: ...20 C11281 Fig 32 RTU Open System Control Wiring Diagram 558J ...

Page 21: ...21 C11282 Fig 33 RTU Open System Control Wiring Diagram with Perfect Humidity 558J ...

Page 22: ...Relay State pexh DO Relay 24VAC 1A J11 3 Dehumidification Relay State dehum DO Relay 24VAC 1A J11 7 8 LEGEND AI Analog Input AO Analog Output DI Discrete Input DO Discrete Output These inputs if installed take the place of the default input on the specific channel according to schematic Parallel pins J5 1 J2 6 J5 3 J1 10 J5 5 J1 2 are used for field installation The RTU Open controller requires th...

Page 23: ...r zoning system However it is still recommended that return air duct sensor be installed to allow stand alone operation for back up Refer to the configuration section for details on controller configurations associated with space sensors S 33ZCT55SPT space temperature sensor with override button S 33ZCT56SPT space temperature sensor with override button and setpoint adjustment S 33ZCT59SPT space t...

Page 24: ...ontact Do not mount the IAQ sensor in drafty areas such as near supply ducts open windows fans or over heat sources Allow at least 3 ft 0 9 m between the sensor and any corner Avoid mounting the sensor where it is influenced by the supply air the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air...

Page 25: ...with the Perfect Humidity option there are two pink PNK wires loose in the control box used to control the dehumidification function of the unit These pink wires are meant to be tied to a space humidistat or thermidistat on an electromechanical unit On RTU Open equipped units these pink wires must be connected to J11 7 8 to allow the Open board to operate the dehumidification function for the unit...

Page 26: ... fan status accessory is a field installed accessory This accessory detects when the indoor fan is blowing air When installing this accessory the unit must be configured for fan status by setting MENU Config Inputs input 3 5 8 or 9 to Fan Status and normally open N O or normally closed N C Input 8 or 9 is recommended for easy of installation Refer to Fig 31 and Fig 32 or Fig 33 for wire terminatio...

Page 27: ... s network address See Fig 46 and 47 for protocol switch settings and address switches The 3rd party connection to the RTU Open is through plug J19 See Fig 48 for wiring NOTE Power must be cycled after changing the SW1 3 switch settings Contact your Bryant applications engineer for more detailed information on protocols 3rd party wiring and networking SW3 Protocol Selection PROTOCOL DS8 DS7 DS6 DS...

Page 28: ... your Bryant applications engineer for details on navigation and screen content Virtual BACview Virtual BACview is a freeware computer program that functions as the BACview6 Handheld The USB Link interface USB L is required to connect a computer to the RTU Open board The link cable connects a USB port to the J12 local access port This program functions and operates identical to the handheld RTU Op...

Page 29: ...d memory to RTU Open S Replace RTU Open NOTE Refer to Catalog No TS 5580J 01 for complete configuration of RTU Open operating sequences Contact your Bryant applications engineer for details on configuration and troubleshooting of connected networks Outdoor Air Enthalpy Control PNO 33CSENTHSW The enthalpy control 33CSENTHSW is available as a field installed accessory to be used with the EconoMi er2...

Page 30: ...p unit in order to prevent smoke from circulating throughout the building It is not to be used as a life saving device Controller The controller see Fig 52 includes a controller housing a printed circuit board and a clear plastic cover The controller can be connected to one or two compatible duct smoke sensors The clear plastic cover is secured to the housing with a single captive screw for easy a...

Page 31: ...ig 54 Typical Supply Air Smoke Detector Sensor Location Return Air without Economizer The sampling tube is located across the return air opening on the unit basepan See Fig 55 The holes in the sampling tube face downward into the return air stream The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controll...

Page 32: ...58 4 Screw the sensor and detector plate into its operating position using screws from Step 1 Make sure the sampling tube connection is on the bottom and the ex haust tube is on the top See Fig 58 5 Connect the flexible tube on the sampling inlet to the sampling tube on the basepan Flexible Exhaust Tubes Screws Sample Tube C08126 Fig 57 Return Air Detector Shipping Position C08127 Fig 58 Return Ai...

Page 33: ... 60 44 50 89 89 50 3 56 6 60 60 46 52 91 91 MED NONE 1 9 19 4 25 19 89 21 3 30 22 91 101A00 3 3 4 4 9 2 10 6 19 4 19 4 25 25 19 19 89 89 21 3 21 8 30 30 22 22 91 91 102A00 4 9 6 5 13 6 15 6 23 1 25 6 25 30 21 24 89 89 25 5 28 0 30 30 23 26 91 91 103B00 6 5 8 7 18 1 20 9 28 8 32 3 30 35 26 30 89 89 31 1 34 6 35 35 29 32 91 91 104B00 7 9 10 5 21 9 25 3 33 5 37 8 35 40 31 35 89 89 35 9 40 1 40 45 33 ...

Page 34: ... 94 94 56 3 62 6 60 70 52 58 96 96 MED NONE 1 9 24 2 30 25 94 26 1 30 27 96 101A00 3 3 4 4 9 2 10 6 24 2 25 4 30 30 25 25 94 94 26 1 27 8 30 30 27 27 96 96 102A00 4 9 6 5 13 6 15 6 29 1 31 6 30 35 27 29 94 94 31 5 34 0 35 35 29 31 96 96 103B00 6 5 8 7 18 1 20 9 34 8 38 3 35 40 32 35 94 94 37 1 40 6 40 45 34 37 96 96 104B00 7 9 10 5 21 9 25 3 39 5 43 8 40 45 36 40 94 94 41 9 46 1 45 50 39 42 96 96 ...

Page 35: ...0 3 56 6 60 60 46 52 101 101 104B00 104B00 15 8 21 0 43 8 50 5 60 9 69 3 70 70 56 64 99 99 63 3 71 6 70 80 58 66 101 101 MED NONE 1 9 23 5 30 23 99 25 4 30 25 101 102A00 4 9 6 5 13 6 15 6 23 5 25 6 30 30 23 24 99 99 25 5 28 0 30 30 25 26 101 101 103B00 6 5 8 7 18 1 20 9 28 8 32 3 30 35 26 30 99 99 31 1 34 6 35 35 29 32 101 101 105A00 12 0 16 0 33 4 38 5 47 9 54 3 50 60 44 50 99 99 50 3 56 6 60 60 ...

Page 36: ...4B00 104B00 15 8 21 0 43 8 50 5 66 9 75 3 70 80 62 69 104 104 69 3 77 6 70 80 64 71 106 106 MED NONE 1 9 28 3 40 29 104 30 2 40 31 106 102A00 4 9 6 5 13 6 15 6 29 1 31 6 40 40 29 29 104 104 31 5 34 0 40 40 31 31 106 106 103B00 6 5 8 7 18 1 20 9 34 8 38 3 40 40 32 35 104 104 37 1 40 6 40 45 34 37 106 106 105A00 12 0 16 0 33 4 38 5 53 9 60 3 60 70 50 55 104 104 56 3 62 6 60 70 52 58 106 106 104B00 1...

Page 37: ...ED NONE 1 9 26 2 40 26 144 28 1 40 28 146 102A00 4 9 6 5 13 6 15 6 26 2 26 2 40 40 26 26 144 144 28 1 28 4 40 40 28 28 146 146 104B00 7 9 10 5 21 9 25 3 33 9 38 1 40 40 31 35 144 144 36 3 40 5 40 45 33 37 146 146 105A00 12 0 16 0 33 4 38 5 48 3 54 6 50 60 44 50 144 144 50 6 57 0 60 60 47 52 146 146 104B00 104B00 15 8 21 0 43 8 50 5 61 3 69 6 70 70 56 64 144 144 63 6 72 0 70 80 59 66 146 146 104B00...

Page 38: ...5 33 151 102A00 4 9 6 5 13 6 15 6 31 0 32 0 45 45 31 31 149 149 32 9 34 4 45 45 33 33 151 151 104B00 7 9 10 5 21 9 25 3 39 9 44 1 45 45 37 41 149 149 42 3 46 5 45 50 39 43 151 151 105A00 12 0 16 0 33 4 38 5 54 3 60 6 60 70 50 56 149 149 56 6 63 0 60 70 52 58 151 151 104B00 104B00 15 8 21 0 43 8 50 5 67 3 75 6 70 80 62 70 149 149 69 6 78 0 70 80 64 72 151 151 104B00 105A00 19 9 26 5 55 2 63 8 81 5 ...

Page 39: ...34 185 102A00 4 9 6 5 13 6 15 6 32 8 32 8 50 50 32 32 183 183 34 7 34 7 50 50 34 34 185 185 104B00 7 9 10 5 21 9 25 3 36 8 41 0 50 50 34 38 183 183 39 1 43 4 50 50 36 40 185 185 105A00 12 0 16 0 33 4 38 5 51 1 57 5 60 60 47 53 183 183 53 5 59 9 60 60 49 55 185 185 104B00 104B00 15 8 21 0 43 8 50 5 64 1 72 5 70 80 59 67 183 183 66 5 74 9 70 80 61 69 185 185 104B00 105A00 19 9 26 5 55 2 63 8 78 4 89...

Page 40: ...90 102A00 4 9 6 5 13 6 15 6 37 6 37 6 50 50 38 38 188 188 39 5 39 5 50 50 40 40 190 190 104B00 7 9 10 5 21 9 25 3 42 8 47 0 50 50 39 43 188 188 45 1 49 4 50 50 42 45 190 190 105A00 12 0 16 0 33 4 38 5 57 1 63 5 60 70 53 58 188 188 59 5 65 9 60 70 55 61 190 190 104B00 104B00 15 8 21 0 43 8 50 5 70 1 78 5 80 80 65 72 188 188 72 5 80 9 80 90 67 74 190 190 104B00 105A00 19 9 26 5 55 2 63 8 84 4 95 1 9...

Page 41: ...pply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2 Use the following formula to determine the percentage of voltage imbalance Voltage Imbalance 100 x max voltage deviation from average voltage average voltage Example Supply voltage is 230 3 60 AB 224 v BC 231 v AC 226 v Average Voltage 224 231 226 681 3 3 227 Determine maximum deviation from average volt...

Page 42: ...ailable accessories include Curb Thru base connection kit must be installed before unit is set on curb Electric heaters and single point connection kits Manual outside air damper Two Position motorized outside air damper EconoMi er IV with control EconoMi er2 without control for external signal Power Exhaust Differential dry bulb sensor EconoMi er IV Outdoor enthalpy sensor Differential enthalpy s...

Page 43: ...43 558J ...

Page 44: ...ems D 7310 W Morris St D Indianapolis IN 46231 Printed in U S A Edition Date 08 11 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No II558J 16 Replaces II558J 06 558J ...

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