Bryant PURON 581J User Manual

Download

581J

SINGLE PACKAGE ROOFTOP GAS HEATING/ELECTRIC COOLING UNIT

SIZES 07, 08, 09 & 12 with PURONR(R--410A) REFIRGERANT

Installation Instructions

NOTE: Read the entire instruction manual before starting

the installation

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 2....................

INSTALLATION 7...............................

Jobsite Survey 7................................

Step 1 -- Plan for Unit Location 7..................

Roof Mount 7...............................

Step 2 -- Plan for Sequence of Unit Installation 8......

Curb--Mount Installation 8.....................

Pad--Mount Installation 8......................

Frame--Mount Installation 8....................

Step 3 -- Inspect Unit 8...........................

Step 4 -- Provide Unit Support 8...................

Roof Curb Mount 8..........................

Slab Mount (Horizontal Units Only) 8...........

Alternate Unit Support

(In Lieu of Curb or Slab Mount) 8..............

Step 5 -- Field Fabricate Ductwork 11...............

Step 6 -- Rig and Place Unit 11....................

Positioning on Curb 12.......................

Step 7 -- Convert to Horizontal & Connect Ductwork 12...

Step 8 -- Install Outside Air Hood 12...............

Economizer and Two Position Damper Hood

Package Removal and Setup — Factory Option 12..

Economizer Hood and Two--Position Hood 13.....

Step 9 -- Install Flue Hood 13.....................

Step 10 -- Install Gas Piping 13....................

Factory--Option Thru--Base Connections

(Gas Connections) 14.........................

Step 11 -- Install External Condensate Trap and Line 16..

Step 12 -- Make Electrical Connections 17...........

Field Power Supply 17........................

Units with Factory--Installed Disconnect 17.......

Units without Factory--Installed Disconnect 17....

All Units 17................................

Convenience Outlets 18.......................

Factory--Option Thru--Base Connections

(Electrical Connections) 19....................

Units without Thru--Base Connections 19.........

Field Control Wiring 19.......................

Thermostat 19...............................

Unit without Thru--Base Connection Kit 20.......

Heat Anticipator Settings 20...................

Perfect Humidityt Control Connections 21........

Perfect Humidity -- Space RH Controller 21.......

RTU Open Control System 23...................

Supply Air Temperature (SAT) Sensor 26.........

Outdoor Air Temperature (OAT) Sensor 26.......

EconoMi$er2 27.............................

Field Connections 27..........................

Space Temperature (SPT) Sensors 27............

Indoor Air Quality (CO

Outdoor Air Quality Sensor 28.................

Smoke Detector/Fire Shutdown (FSD) 29.........

Space Humidity Sensor or Humidistat 29.........

Connecting Discrete Inputs 30..................

Communication Wiring -- Protocols 31............

General 31.................................

Local Access 32..............................

RTU Open Troubleshooting 32.................

Outdoor Air Enthalpy Control 33.................

Differential Enthalpy Control 33................

Return Air Enthalpy Sensor 34.................

Smoke Detectors 34...........................

System 34..................................

Controller 34...............................

Sensor Module 34...........................

Smoke Detector Locations 35....................

Supply Air 35...............................

Return Air without Economizer 35..............

Return Air with Economizer 35.................

Step 13 -- Adjust Factory--Installed Options 40........

Step 14 -- Install Accessories 40...................

)Sensor 28.............

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory--authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lock(s) and lockout tag(s). Unit may have more than one power switch.

Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national electrical codes (in USA, ANSI/NFPA70, National Electrical Code (NEC); in Canada, CSA C22.1)

581J

for special requirements. It is important to recognize safety information. This is the

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

WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Puronr (R--410A) refrigerant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service equipment or components on Puron refrigerant equipment.

WARNING

PERSONAL INJURY AND ENVIRONMENTAL HAZARD

Failure to follow this warning could cause personal injury or death.

Relieve pressure and recover all refrigerant before system repair or final unit disposal.

Ware safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.

WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury or death.

Disconnect gas piping from unit when leak testing at pressure greater than 0.5 psig (3450 Pa). Pressures greater than 0.5 psig (3450 Pa) will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater than 0.5 psig (3450 Pa), it must be replaced before use. When pressure testing field--supplied gas piping at pressures of 0.5 psig (3450 Pa) or less, a unit connected to such piping must be isolated by closing the manual gas valve.

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 air conditioning equipment.

CAUTION

Vertical Connections / Economizer

581J

Horizontal Connections / Economizer

Fig. 1 -- Unit Dimensional Drawing — Sizes 07--09

C11110

581J

C11111

Fig. 1 -- Unit Dimensional Drawing — Sizes 07--09 (cont.)

Vertical Connections / Economizer

581J

Horizontal Connections / Economizer

Fig. 2 -- Unit Dimensional Drawing — Size 12

C11112

581J

C11113

Fig. 2 -- Unit Dimensional Drawing — Size 12 (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 installation requirements.

2. Determine unit location (from project plans) or select unit location.

3. Check for possible overhead obstructions which may interfere with unit lifting or rigging.

Step 1 — Plan for Unit Location

Select a location for the unit and its support system (curb or other) that provides for the minimum clearances required for safety. This includes the clearance to combustible surfaces, unit performance and service access below, around and above unit as specified in unit drawings. See Fig. 3.

18” (457)

42" (1067)

Required bottom condensate drain connection. Otherwise, 36” (914mm) for condensate connection.

Fig. 3 -- Service Clearance Dimensional Drawing

NOTE: Consider also the effect of adjacent units.

18" (457)

C10145

Be sure that the unit is installed such that snow will not block the combustion intake or flute outlet.

Unit may be installed directly on wood flooring or on Class A, B, or C roof--covering material when roof curb is used.

Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air. For proper unit operation, adequate combustion and ventilation air must be provided in accordance with Section 5.3 (Air for Combustion and Ventilation) of the National Fuel Gas Code, ANSI Z223.1 (American National Standards Institute) and NFPA (National Fire Protection Association) 54 TIA----54----84----1. In Canada, installation must be in accordance with the CAN1----B149 installation codes for gas burning appliances.

Although unit is weatherproof, avoid locations that permit water from higher level runoff and overhangs to fall onto the unit.

Locate mechanical draft system flue assembly at least 4 ft (1.2 m) from any opening through which combustion products could enter the building, and at least 4 ft (1.2 m) from any adjacent building (or per local code). Locate the flue assembly at least 10 ft (3.05 m) from an adjacent unit’s fresh air intake hood if within 3 ft (0.91 m) of same elevation (or per local code). When unit is located adjacent to public walkways, flue assembly must be at least 7 ft (2.1 m) above grade.

Select a unit mounting system that provides adequate height to allow installation of condensate trap per requirements. Refer to Step 11 — 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.

581J

Table 1 – Operating Weights

581J*

Base Unit 765 (347) 925 (419.5) 925 (419.5) 1099 (499)

Economizer

Vertical 50 (23) 80 (36) 80 (36) 80 (36)

Horizontal 80 (36) 105 (48) 105 (48) 105 (48)

Powered Outlet 32 (15) 32 (15) 32 (15) 32 (15)

Perfect Humidity™ System 41 (19) 70 (32) 70 (32) 75 (34)

Curb

14--- in/356 mm 110 (50) 133 (65) 133 (65) 133 (65)

24--- in/610 mm 145 (66) 174 (79) 174 (79) 174 (79)

07 08 09 12

UNITS LB (KG)

Step 2 — Plan for Sequence of Unit Installation

The support method used for this unit will dictate different sequences for the steps of unit installation. For example, on curb--mounted units, some accessories must be installed on the unit before the unit is placed on the curb. Review the following for recommended sequences for installation steps.

Curb--Mounted Installation —

Install curb Install field--fabricated ductwork inside curb Install accessory thru--base service connection package

(affects curb and unit) (refer to accessory installation instructions for details)

Prepare bottom condensate drain connection to suit planned condensate line routing (refer to Step 11 for details)

581J

Rig and place unit Install outdoor air hood Install flue hood Install gas piping Install condensate line trap and piping Make electrical connections Install other accessories

Pad--Mounted Installation —

Prepare pad and unit supports Check and tighten the bottom condensate drain

connection plug Rig and place unit Convert unit to side duct connection arrangement Install field--fabricated ductwork at unit duct openings Install outdoor air hood Install flue hood Install gas piping Install condensate line trap and piping Make electrical connections Install other accessories

Frame--Mounted Installation —

Frame--mounted applications generally follow the sequence for a curb installation. Adapt as required to suit specific installation plan.

Step 3 — Inspect Unit

Inspect unit for transportation damage. File any claim with transportation agency.

Step 4 — Provide Unit Support

Roof Curb Mount —

Accessory roof curb details and dimensions are shown in Fig. 4 and Fig. 5. Assemble and install accessory roof curb in accordance with instructions shipped with the curb.

NOTE: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 4 and Fig. 5. Improperly applied gasket can also result in air leaks and poor unit performance.

Curb should be level. This is necessary for unit drain to function properly. Unit leveling tolerances are show in Fig. 6. Refer to Accessory Roof 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 field--installed thru--the--roof

curb gas connections are desired, use factory--supplied pipe coupling and gas plate assembly to mount the thru--the--roof curb connection to the roof curb. Gas connections and power connections to the unit must be field installed after the unit is installed on the roof curb.

If electric and control wiring is to be routed through the basepan, attach the accessory thru--the--base service connections to the basepan in accordance with the accessory installation instructions.

Slab Mount (Horizontal Units Only) —

Provide a level concrete slab that extends a minimum of 6 in. (150 mm) beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if required.

Alternate Unit Support (InLieuofCurborSlabMount)—

A non--combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 4--in. x 4--in. (102 mm x 102 mm) pads on each side.

Confirm before installation of unit that voltage, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.

ROOFCURB ACCESSORY

CRRFCURB003A01

CRRFCURB004A01

1’ - 2” [356]

2’ - 0” [610]

UNIT SIZE

581J*07-09

581J

Fig. 4 -- Roof Curb Details — Sizes 07--09

C11081

581J*12

581J

ROOFCURB ACCESSORY

CRRFCURB003A02

CRRFCURB004A02

1’ - 2” [356]

2’ - 0” [610]

UNIT SIZE

581J*12

Fig. 5 -- Roof Curb Details — Size 12

C11082

A minimum clearance is not required around ductwork.

MAXIMUM ALLOWABLE

DIFFERENCE IN. (MM)

A-B

0.5” (13)

B-C

1.0” (25)

A-C

1.0” (25)

C06110

Fig. 6 -- 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) without economizer. For vertical ducted applications, secure all ducts to roof curb

and building structure. Do not connect ductwork to unit. Fabricate supply ductwork so that the cross sectional

dimensions are equal to or greater than the unit supply duct opening dimensions for the first 18 in. (458 mm) of duct length from the unit basepan.

Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through unconditioned spaces must be insulated and covered with a vapor barrier.

CAUTION

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in damage to roofing materials.

Membrane roofs can be cut by sharp sheet metal edges. Be careful when placing any sheet metal parts on such roof.

Step 6 — Rig and Place Unit

Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 7 for additional information.

Lifting holes are provided in base rails as shown in Fig. 7. Refer to rigging instructions on unit.

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

581J

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

UNIT

581J*07 1200 545 88.0 2235 44.0 1120 41.5 1055

581J*08 1420 645 88.0 2235 44.0 1120 49.5 1255

581J*09 1420 645 88.0 2235 44.0 1120 49.5 1255

581J*12 1665 757 88.0 2235 32.0 815 49.5 1255

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. Use wooden top to prevent rigging straps from damaging unit.

MAX WEIGHT

LB KG IN MM IN MM IN MM

Fig. 7 -- Rigging Details

Before setting the unit onto the curb, recheck gasketing on curb.

C06005

DIMENSIONS

A B C

PositioningonCurb—

Position unit on roof curb so that the following clearances are maintained:

/4in. (6.4 mm) clearance between the roof curb and the base rail inside the front and back, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit. This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately equal to Fig. 4 and Fig. 5, section C--C.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Flue vent discharge must have a minimum horizontal clearance of 4 ft (1220 mm) from electric and gas meters, gas regulators, and gas relief equipment. Minimum distance between unit and other electrically live parts is 48 inches (1220 mm).

Flue gas can deteriorate building materials. Orient unit such

581J

that flue gas will not affect building materials. Locate mechanical draft system flue assembly at least 48 in. (1220 mm) from an adjacent building or combustible material.

NOTE: Installation of accessory flue discharge deflector kit will reduce the minimum clearance to combustible material to 18 in. (460 mm).

After unit is in position, remove rigging skids and shipping materials.

Step 7 — Convert to Horizontal and Connect Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit without factory--installed economizer or return air smoke detector option may be field--converted to horizontal ducted configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation--side down. Seals around duct openings must be tight. See Fig. 8.

Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.

Step 8 — Install Outside Air Hood

Economizer and Two Position Damper Hood Package Removal and Setup -- Factory Option

1. The hood is shipped in knock--down form and must be field assembled. The indoor coil access panel is used as the hood top while the hood sides, divider and filter are packaged together, attached to a metal support tray using plastic stretch wrap, and shipped in the return air compartment behind the indoor coil access panel. The hood assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie-wraps.

2. To gain access to the hood, remove the filter access panel. (See Fig. 9.)

FILTER ACCESS PANEL

INDOOR COIL ACCESS PANEL

C10146

Fig. 9 -- Typical Access Panel Locations

3. Locate the (2) screws holding the metal tray to the basepan and remove. Locate and cut the (2) plastic tie--wraps securing the assembly to the damper. (See Fig. 10) Be careful to not damage any wiring or cut tie--wraps securing any wiring.

Fig. 8 -- Horizontal Conversion Panels

C06108

Field--supplied flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing and mastic in accordance with applicable codes.

Hood Parts

Plastic Tie Wrap Qty (2)

Screws for Metal Tray Qty (2)

C08639

Fig. 10 -- Economizer 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 aluminum filter for use in the power exhaust hood assembly.

1. The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bottom of the indoor coil access panel. See Fig. 11.

each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 13.

6. Caulk the ends of the joint between the unit top panel and the hood top.

7. Replace the filter access panel.

TOP PANEL

INDOOR COIL ACCESS PANEL

C06025

INDOOR COIL ACCESS PANEL

CAULK HERE

Fig. 11 -- Indoor Coil Access Panel Relocation

2. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 12.

TOP PANEL

DIVIDER

OUTSIDE AIR

HOOD

CLEANABLE

BAROMETRIC RELIEF

ALUMINUM FILTER

FILTER

FILTER CLIP

C08634

Fig. 13 -- Economizer Filter Installation

Step 9 — Install Flue Hood

Flue hood is shipped screwed to the basepan beside the burner compartment access panel. Remove from shipping location and using screws provided, install flue hood and screen in location shown in Fig. 14.

581J

INDOOR COIL ACCESS PANEL

LEFT HOOD SIDE

19 1/16”

(483mm)

HOOD DIVIDER

SCREW

33 3/8”

(848mm)

C06026

Fig. 12 -- Economizer Hood Construction

3. Remove the shipping tape holding the economizer barometric relief damper in place (economizer only).

4. Insert the hood divider between the hood sides. See Fig. 12 and 13. Secure hood divider with 2 screws on

BLOWER ACCESS PANEL

C07081

Fig. 14 -- Flue Hood Details

Step 10 — Install Gas Piping

Installation of the gas piping must be accordance with local building codes and with applicable national codes. In U.S.A., refer to NFPA 54/ANSI Z223.1 National Fuel Gas Code (NFGC). In Canada, installation must be accordance with the CAN/CSA B149.1 and CAN/CSA B149.2 installation codes for gas burning appliances.

This unit is factory equipped for use with Natural Gas fuel at elevations up to 2000 ft (610 m) above sea level. Unit may be field converted for operation at elevations above 2000 ft (610 m) and/or for use with liquefied petroleum fuel. See accessory kit installation instructions regarding these accessories.

NOTE: Furance gas input rate on rating plate is for installation up to 2000 ft (610 m) above sea level. In U.S.A. the input rating for altitudes above 2000 ft (610 m) must be derated by 4% for each 1000 ft (305 m) above sea level. In Canada the input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.

For natural gas applications, gas pressure at unit gas connection must not be less than 4 in. wg (996 Pa) or greater than 13 in. wg (3240 Pa) while the unit is operating. For liquified petroleum applications, the gas pressure must not be less than 11 in. wg (2740 Pa) or greater than 13 in. wg (3240 Pa) at the unit connection.

581J

The gas supply pipe enters the unit at the burner access panel on the front side of the unit, through the long slot at the bottom of the access panel. The gas connection to the

unit is made to the

/2-- i n . o r3/4--in. FPT gas inlet port on

the unit gas valve.

Table 2 – Natural Gas Supply Line Pressure Ranges

UNIT MODEL UNIT SIZE MIN MAX

581J 07, 08, 09, 12

4.0 in. wg (996 Pa)

13.0 in. wg (3240 Pa)

9” MINIMUM CLEARANCE

BASE UNIT

BASE RAIL

FROM GAS METER

STEEL PIPE

NOMINAL DIAMETER

(in.)

or 1

or larger

FOR PANEL REMOVAL

MANUAL GAS SHUTOFF VALVE

48” MINIMUM

DRIP LEG PER NFGC

ROOF CURB

NFGC – National Fuel Gas Code

Field supplied.

NOTE: Follow all local codes.

LEGEND

SPACINGOFSUPPORTS

GAS REGULATOR

FIELD-FABRICATED SUPPORT

X DIMENSION

(ft)

6 8

C11091

Fig. 15 -- Gas Piping Guide

(with Accessory Thru--the--Curb Service Connections)

Factory--Option Thru--Base Connections (Gas Connections) —

This service connection kit consists of a NPT gas adapter

fitting, an electrical bulkhead connector and a

/4-- i n electrical bulkhead connector, all factory--installed in the embossed (raised) section of the unit basepan in the condenser section.

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage to equipment.

When connecting the gas line to the unit gas valve, the installer MUST use a backup wrench to prevent damage to the valve.

Install a gas supply line that runs to the unit heating section. Refer to the NFPA 54/NFGC or equivalent code for gas pipe sizing data. Do not use a pipe smaller than the size specified. Size the gas supply line to allow for a maximum pressure drop of 0.5--in wg (124 Pa) between gas regulator source and unit gas valve connection when unit is operating at high--fire flow rate.

The gas supply line can approach the unit in three ways: horizontally from outside the unit (across the roof), thru--curb/under unit basepan (accessory kit required) or through unit basepan (factory--option or accessory kit required). Consult accessory kit installation instructions for details on these installation methods. Observe clearance to gas line components per Fig. 15.

LOW VOLTAGE CONDUIT CONNECTOR

HIGH VOLTAGE CONDUIT CONNECTOR

STAINLESS STEEL FITTING

C008621

Fig. 16 -- Thru--Base Connection Fittings

The thru--base gas connector has male and female threads. The male threads protrude above the basepan of the unit; the female threads protrude below the basepan.

Check tightness of connector lock nuts before connecting gas piping.

Gas Line: Install a

only) or

/4--in (for all other units) NPT street elbow on

/2--in (08 & 09 size Low Gas units

the thru--base gas fitting. Attach an appropriate size pipe nipple with minimum length of 16--in (406 mm) (field--supplied) to the street elbow and extend it through the access panel at the gas support bracket. See Fig. 17.

9” (229mm) min

EMBOSSMENT STAINLESS STEEL FITTING SUPPORT

BRACKET

C08579

Fig. 17 -- Gas Line Piping

Other hardware required to complete the installation of the gas supply line will include a manual shutoff valve, a sediment trap (drip leg) and a ground--joint union. A pressure regulator valve may also be required (to convert gas pressure from pounds to inches of pressure). The manual shutoff valve must be located within 6--ft (1.83 m) of the unit. The union, located in the final leg entering the unit, must be located at least 9--in (230 mm) away from the access panel to permit the panel to be removed for service. If a regulator valve is installed, it must be located a minimum of 4--ft (1220 mm) away from the unit’s flue outlet. Some municipal codes require that the manual shutoff valve be located upstream of the sediment trap. See Fig. 18 and Fig. 19 for typical piping arrangements for gas piping that has been routed through the sidewall of the curb. See Fig. 20 for typical piping arrangement when thru--base is used. Ensure that all piping does not block access to the unit’s main control box or limit the required working space in front of the control box.

Thru-Curb Adapter

Shut Off

Valve

Drip Leg

Union

Unit Base Rail

Fig. 18 -- Gas Piping with Thru--Curb Accessory

9” (229mm) min

Burner Access Panel

Union

Thru-Curb Adapter

C07469

581J

When installing the gas supply line, observe local codes pertaining to gas pipe installations. Refer to the NFPA 54/ANSI Z223.1 NFGC latest edition (in Canada, CAN/CSA B149.1). In the absence of local building codes, adhere to the following pertinent recommendations:

1. Avoid low spots in long runs of pipe. Grade all pipe

/4--in. in every 15 ft (7 mm in every 5 m) to prevent traps. Grade all horizontal runs downward to risers. Use risers to connect to heating section and to meter.

2. Protect all segments of piping system against physical and thermal damage. Support all piping with appropriate straps, hangers, etc. Use a minimum of one hanger every 6 ft (1.8 m). For pipe sizes larger than

/2--in., follow recommendations of national codes.

3. Apply joint compound (pipe dope) sparingly and only to male threads of joint when making pipe connections. Use only pipe dope that is resistant to action of liquefied petroleum gases as specified by local and/or national codes. If using PTFE (Teflon) tape, ensure the material is Double Density type and is labeled for use on gas lines. Apply tape per manufacturer’s instructions.

4. Pressure--test all gas piping in accordance with local and national plumbing and gas codes before connecting piping to unit.

Unit Base Rail

Drip Leg

Shut Off

Val ve

C07470

Fig. 19 -- Gas Piping with Thru--Curb Accessory

(alternate layout)

C08018

Fig. 20 -- Gas Piping with Thru--Base Accessory

NOTE: Pressure test the gas supply system after the gas supply piping is connected to the gas valve. The supply piping must be disconnected from the gas valve during the testing of the piping systems when test pressure is in excess of 0.5 psig (3450 Pa). Pressure test the gas supply piping system at pressures equal to or less than 0.5 psig (3450 Pa). The unit heating section must be isolated from the gas piping system by closing the external main manual shutoff valve and slightly opening the ground--joint union.

Check for gas leaks at the field--installed and factory--installed gas lines after all piping connections have been completed. Use soap--and--water solution (or method specified by local codes and/or regulations).

WARNING

FIRE OR EXPLOSION HAZARD

Failure to follow this warning could result in personal

581J

injury, death and/or property damage. S Connect gas pipe to unit using a backup wrench to

avoid damaging gas controls.

S Never purge a gas line into a combustion chamber. S Never test for gas leaks with an open flame. Use a

commercially available soap solution made specifically for the detection of leaks to check all connections.

S Use proper length of pipe to avoid stress on gas

control manifold.

NOTE: If orifice hole appears damaged or it is suspected to have been redrilled, check orifice hole with a numbered drill bit of correct size. Never redrill an orifice. A burr--free and squarely aligned orifice hole is essential for proper flame characteristics.

Step 11 — Install External Condensate Trap and Line

The unit has one3/4-in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 22. Unit airflow configuration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan can be tightened with a

To use the alternate bottom drain connection, remove the red drain plug from the bottom connection (use a square socket drive extension) and install it in the side drain connection.

CONDENSATE PAN (SIDE VIEW)

STANDARD SIDE DRAIN

Fig. 22 -- Condensate Drain Pan (Side View)

The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 23.

/2--in. square socket drive extension.

/2-- i n .

DRAIN

PLUG

(FACTORY-INSTALLED)

ALTERNATE BOTTOM DRAIN

C08021

Fig. 21 -- Orifice Hole

BURNER

ORIFICE

A93059

MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE

TO ROOF DRAIN

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended.

BASE RAIL

OPEN VENT

2˝ (51) MIN

DRAIN PLUG

SEE NOTE

ROOF CURB

C08022

Fig. 23 -- 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 pipe size smaller than the unit connection

/4-in.).

(

Step 12 — Make Electrical Connections

WARNING

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 cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standards Association] C22.1), and local electrical codes.

Field power wires will be connected line--side pressure lugs on the power terminal block or at factory--installed option non--fused disconnect.

Field power wires are connected to the unit at line--side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement) or at factory--installed option non--fused disconnect switch. Max wire size is #4 AWG (copper only).

NOTE: TEST LEADS -- Unit may be equipped with short leads (pigtails) on the field line connection points on contactor C or optional disconnect switch. These leads are for factory run--test purposes only; remove and discard before connecting field power wires to unit connection points. Make field power connections directly to line connection pressure lugs only.

NOTE: Field--supplied wiring shall conform with the limitations of minimum 63_F(33_C) rise.

Field Power Supply —

If equipped with optional Powered Convenience Outlet: The power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads according to required operation of the convenience outlet. If an always--energized convenience outlet operation is desired, connect the source leads to the line side of the unit--mounted disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de--energize via unit disconnect switch operation of the convenience outlet is desired, connect the source leads to the load side of the 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 with unit field power leads (see Fig. 24).

Units Without Disconnect Option

C IFC

13 13

Disconnect

per

NEC

L2 L3

208/230-3-60

460-3-60 575-3-60

FIRE HAZARD

WARNING

Failure to follow this warning could result in intermittent operation or performance satisfaction.

Do not connect aluminum wire between disconnect switch and581J unit. Use onlycopper wire. (See Fig.25.)

ELECTRIC

DISCONNECT

SWITCH

COPPER

WIRE ONLY

ALUMINUM

WIRE

A93033

Fig. 25 -- Disconnect Switch and Unit

Units with Factory--Installed Disconnect —

The factory--installed option disconnect switch is located in a weatherproof enclosure located under the main control box. The manual switch handle is accessible through an opening in the access panel.

Units Without Factory--Installed Disconnect —

581J

Units With Disconnect Option

Fig. 24 -- Power Wiring Connections

Optional

Disconnect

Switch

Disconnect factory test leads and discard.

Factory

Wiring

C11109

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. Do not cover unit informative plate if mounting the disconnect on the unit cabinet.

All Units —

All field wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 24 for power wiring connections to the unit power terminal block and equipment ground. Maximum wire size is #4 ga AWG per pole.

Provide a ground--fault and short--circuit over--current protection device (fuse or breaker) per NEC Article 440 (or local codes). Refer to unit informative data plate for MOCP (Maximum Over--current Protection) device size.

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, the control transformer must be rewired by moving the black wire with

/4-in. female spade connector from the 230--v

the connection and moving it to the 208-v

/4-in. male terminal

on the primary side of the transformer. Refer to unit label

diagram for additional information. Voltage to compressor terminals during operation must be

within voltage range indicated on unit nameplate. See Table 5. On 3--phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in the legend for Table 5, Note 2 to determine the percent of voltage imbalance. Operation on

581J

improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Bryant warranty.

NOTE: Check all factory and field electrical connections for tightness.

Convenience Outlets —

WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Lock--out and tag--out this switch, if necessary.

circuit--interrupter) duplex receptacle rated at 15--A behind a hinged waterproof access cover, located on the end panel of the unit. See Fig. 26.

Installing Weatherproof Cover: A weatherproof while-in-use cover for the factory-installed convenience outlets is now required by UL standards. This cover cannot be factory-mounted due its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate.

The weatherproof cover kit is shipped in the unit’s control box. The kit includes the hinged cover, a backing plate and gasket.

DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET. LOCK--OUT AND TAG--OUT ALL POWER.

Remove the blank cover plate at the convenience outlet; discard the blank cover.

Loosen the two screws at the GFCI duplex outlet, until

approximately

/2-in (13 mm) under screw heads are exposed. 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. 27. 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.

COVER – WHILE-IN-USE WEATHERPROOF

RECEPTACLE NOT INCLUDED

Pwd-CO

Convenience

Outlet

GFCI

Pwd-CO

Fuse

Switch

Control Box

Access Panel

Transformer

C08128

Fig. 26 -- Convenience Outlet Location

Two types of convenience outlets are offered on 581J models: Non--powered and unit--powered. Both types provide a 125--volt GFCI (ground--fault

BASE PLATE FOR GFCI RECEPTACLE

C09022

Fig. 27 -- Weatherproof Cover Installation

Non--powered type: This type requires the field

installation of a general--purpose 125--volt 15--A circuit powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle.

Unit--powered type: A unit--mounted transformer is factory--installed to stepdown the main power supply voltage to the unit to 115--v at the duplex receptacle. This option also includes a manual switch with fuse, located in a utility box and mounted on a bracket behind the

convenience outlet; access is through the unit’s control box access panel. See Fig. 26.

The primary leads to the convenience outlet transformer are not factory--connected. Selection of primary power source is a customer--option. If local codes permit, the transformer primary leads can be connected at the line--side terminals on the unit--mounted non--fused disconnect or HACR breaker switch; this will provide service power to the unit when the unit disconnect switch or HACR switch is open. Other connection methods will result in the convenience outlet circuit being de--energized when the unit disconnect or HACR switch is open. See Fig. 28.

C08283

UNIT

VOLTAGE

208, 230

460 480

575 600

CONNECT

240

PRIMARY

CONNECTIONS

L1: RED +YEL L2: BLU + GRA

L1: RED Splice BLU + YEL L2: GRA

L1: RED L2: GRA

TRANSFORMER

TERMINALS

H1 + H3 H2 + H4

H2 + H3

H1 H2

Fig. 28 -- Powered Convenience Outlet Wiring

Duty Cycle: the unit--powered convenience outlet has a

duty cycle limitation. The transformer is intended to provide power on an intermittent basis for service tools, lamps, etc; it is not intended to provide 15--amps loading for continuous duty loads (such as electric heaters for overnight use). Observe a 50% limit on circuit loading above 8--amps (i.e., limit loads exceeding 8--amps to 30 minutes of operation every hour).

Test the GFCI receptacle by pressing the TEST button on the face of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition.

Fuse on power type: The factory fuse is a Bussman “Fusetron” T--15, non--renewable screw--in (Edison base) type plug fuse.

Using unit--mounted convenience outlets: Units with unit--mounded convenience outlet circuits will often require that two disconnects be opened to de--energize all power to the unit. Treat all units as electrically energized until the convenience outlet power is also checked and de--energization is confirmed. Observe National Electrical Code Article 210, Branch Circuits, for use of convenience outlets.

Factory--Option Thru--Base Connections (Electrical Connections) —

This service connection kit consists of a

bulkhead connector and a 1

/4--in electrical bulkhead

/2--in electrical

connector, all factory--installed in the embossed (raised) section of the unit basepan in the condenser section. The

/2--in bulkhead connector enables the low--voltage control

wires to pass through the basepan. The 1

/4--in electrical bulkhead connector allows the high--voltage power wires to pass through the basepan. See Fig. 16.

Check tightness of connector lock nuts before connecting electrical conduits.

Field--supplied and field--installed liquidtight conduit connectors and conduit may be attached to the connectors on the basepan. Pull correctly rated high voltage and low voltage through appropriate conduits. Connect the power conduit to the internal disconnect (if unit is so equipped) or to the external disconnect (through unit side panel). A hole must be field cut in the main control box bottom on the left side so the 24--v control connections can be made. Connect the control power conduit to the unit control box at this hole.

Units without Thru--Base Connections —

1. Install power wiring conduit through side panel openings. Install conduit between disconnect and control box.

2. Install power lines to terminal connections as shown in Fig. 24.

Field Control Wiring —

The 581J 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.

Thermostat —

Install a Bryant--approved accessory 2--stage thermostat according to installation instructions included with the accessory. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions.

If the thermostat contains a logic circuit requiring 24--v power, use a thermostat cable or equivalent single leads of different colors with minimum of seven leads. If the thermostat does not require a 24--v source (no “C” connection required), use a thermostat cable or equivalent with minimum of six leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.

581J

For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire (35_C minimum). For50to75ft.(15to23m),useno.16AWGinsulated wire (35_C minimum). For over 75 ft. (23 m), use no. 14 AWG insulated wire (35_C minimum). All wire sizes larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

Unit without Thru--Base Connection Kit —

Pass the thermostat control wires through the hole provided in the end panel (see item “D” in the view labeled “LEFT” in Fig. 1 or Fig. 2); then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the upper--left corner of the Central Terminal Board (CTB). See Fig. 30.

Central

Terminal

Board

581J

Typical

Thermostat

Connections

O/B/Y2

(see Note)

T–STAT

Note : Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2.

Field Wiring

Fig. 29 -- Typical Low--Voltage Control Connections

C09350

RACEWAY

HOLE IN END PANEL (HIDDEN)

C08027

Fig. 30 -- Field Control Wiring Raceway

NOTE: If thru--the--bottom connections accessory is

used, refer to the accessory installation instructions for information on routing power and control wiring.

Heat Anticipator Settings —

Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second--stage heating, when available.

Perfect Humidityt Control Connections

Perfect Humidity -- Space RH Controller — NOTE: Perfect Humidity is a factory installed option

which is only available for units equipped with belt--drive motors.

The Perfect Humidity dehumidification system requires a field--supplied and --installed space relative humidity control device. This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination thermostat--humidistat control device such as Bryant’s EDGE isolated contact set for dehumidification control. The humidistat is normally used in applications where a temperature control is already provided (such as a third--party Building Management System).

To connect a field--supplied humidistat:

1. Route the humidistat 2--conductor cable (field--supplied) through the hole provided in the unit corner post.

2. Feed wires through the raceway built into the corner post (see Fig. 30) to the 24--v barrier located on the left side of the control box. The raceway provides the UL--required clearance between high--voltage and low--voltage wiring.

3. Use wire nuts to connect humidistat cable to two PINK leads in the low–voltage wiring as shown in Fig. 32. Refer to the instructions for the field--supplied humidistat for more information.

To connect the Edge Programmable Thermidistat (T6--PRH01--A):

1. Route the Edge Programmable Thermostat multi-conductor cable (field--supplied) through the hole provided in the unit corner post.

2. Feed wires through the raceway build into the corner post (see Fig. 30) to the 24--v barrier located on the left side of the control box. The raceway provides the UL--required clearance between high--voltage and low--voltage wiring.

3. The Edge Programmable Thermostat has dry contacts at terminals D1 and D2 for dehumidification operation (see Fig. 33). The dry contacts must be wired between CTB terminal R and the PINK lead to the LTLO switch with field--supplied wire nuts. Refer to the installation instructions included with the Bryant Edge Programmable Thermidistat device for more information.

Pro Thermidistat with

581J

C09502

Fig. 31 -- Edge Programmable Thermostat

581J

HUMIDISTAT

Fig. 32 -- Typical Perfect Humidityt Dehumidification System Humidistat Wiring

Edge Programable Thermostat

O/W2/B

OAT

RRS

SRTN

HUM

D1 D2 V+

Perfect Humidity™ FIOP

Unit CTB

THERMOSTAT

C11071

*Connection not required.

C09501

Fig. 33 -- Typical Rooftop Unit with Perfect Humidity Dehumidification System with Edge Programmable Thermostat

RTU Open Control System

The RTU Open control is factory--mounted in the 48DC*D unit’s main control box, to the left of the CTB. See Fig. 35. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU Open sensors will be made at the Phoenix connectors on the RTU Open board. The factory--installed RTU Open control includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$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 choice among the four most popular protocols in use today: BACnet, Modbus, Johnson N2 and LonWorks. (See Fig. 34.)

Refer to Table 3, RTU Open Controller Inputs and Outputs for locations of all connections to the RTU Open board.

581J

Fig. 34 -- RTU Open Multi--Protocol Control Board

C10811

581J

Fig. 35 -- RTU Open System Control Wiring Diagram

C11069

581J

Fig. 36 -- RTU Open System Control Wiring Diagram with Perfect Humidityt

C11070

Table 3 – RTU Open Controller Inputs and Outputs

POINT NAME

Space Temp / Zone Temp zone_temp AI (10K Thermistor) J 20 --- 1, 2 Supply Air Temperature sa_temp AI (10K Thermistor) J2 --- 1 , 2 Outdoor Air Temperature oa_temp AI (10K Thermistor) J 2 --- 3 , 4 Space Temperature Offset Pot stpt_adj_offset AI (100K Potentiometer) J 20 --- 3 Safety Chain Feedback safety_status DI (24 VAC) J 1 --- 9 Compressor Safety Status comp_status DI (24 VAC) J 1 --- 2 Fire Shutdown Status firedown_status DI (24 VAC) J1 --- 1 0 Enthalpy Status enthalpy_status DI (24 VAC) J 2 --- 6 Humidistat Input Status humstat_status DI (24 VAC) J 5 --- 7

Indoor Air CO2 iaq A I ( 4 --- 2 0 m a )

Space Relative Humidity space_rh A I ( 4 --- 2 0 m a ) Supply Fan Status* sfan_status DI (24 VAC) Filter Status* filter_status DI (24 VAC)

581J

Door Contact Input* door_contact_status DI (24 VAC) Occupancy Contact* occ_contact_status DI (24 VAC)

Economizer Output econ_output A O ( 4 --- 2 0m a) J 2 --- 5 SupplyFanRelayState sfan DO Relay (24VAC , 1A) J 1 --- 4 Compressor 1 Relay State comp_1 DO Relay (24VAC , 1A) J 1 --- 8 Compressor 2 Relay State comp_2 DO Relay (24VAC , 1A) J 1 --- 7 Heat Stage 1 Relay State heat_1 DO Relay (24VAC , 1A) J 1 --- 6 Heat Stage 2 Relay State heat_2 DO Relay (24VAC , 1A) J 1 --- 5 Power Exhaust Relay State pexh DO Relay (24VAC , 1A) J 11 --- 3 Dehumidification Relay State dehum DO Relay (24VAC, 1A) J 11 --- 7 , 8

LEGEND AI --- A n a l o g I n p ut AO --- A n a l o g O u t p u t DI --- D is c r e t e I np u t DO --- Discrete Output

* These inputs (if installed) take the place of the default input on the specific channel according to schematic. P a r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i e l d --- i n s t a l l a t i o n .

BACnet OBJECT

NAME

DEDICATED INPUTS

CONFIGURABLE INPUTS

TYPE OF I/O

OUTPUTS

CONNECTION PIN

NUMBER(S)

J 4 --- 2 o r J 4 --- 5Outdoor Air CO2 oaq AI ( 4 --- 2 0 m a )

J 5 --- 1 o r J 5 --- 3 o r

J55orJ5---7

The RTU Open controller requires the use of a Bryant space sensor. A standard thermostat cannot be used with the RTU Open system.

Supply Air Temperature (SAT) Sensor —

On FIOP--equipped 581J unit, the unit is supplied with a supply--air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 6--inches (12.7 mm) in length. It is a nominal 10--k ohm thermistor.

The SAT is factory--wired. The SAT probe is wire--tied to the supply--air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re--position the sensor in the flange of the supply--air opening or in the supply air duct (as required by local

codes). Drill or punch a

/2--in. hole in the flange or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 37.

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.

SUPPLY AIR TEMPERATURE SENSOR

SUPPLY AIR

RETURN AIR

Fig. 37 -- Typical Mounting Location for Supply Air

Temperature (SAT) Sensor on Small Rooftop Units

ROOF CURB

C08200

EconoMi$er2 —

The RTU Open control is used with EconoMi$er2 (option or accessory) for outdoor air management. The damper position is controlled directly by the RTU Open control; EconoMi$er2 has no internal logic device.

Outdoor air management functions can be enhanced with field--installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors) Space CO Outdoor air CO

sensor

Field Connections

Field connections for accessory sensors and input devices are made the RTU Open, at plugs J1, J2, J4, J5, J11 and J20. All field control wiring that connects to the RTU Open must be routed through the raceway built into the corner post as shown in Fig. 30. The raceway provides the UL required clearance between high-- and low--voltage wiring. Pass the control wires through the hole provided in the corner post, then feed the wires thorough the raceway to the RTU Open. Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board.

SEN

RED(+)

WHT(GND)

BLK(-)

BRN (GND) BLU (SPT)

CCN COM

SENSOR WIRING

C08201

SW1

Fig. 38 -- T--55 Space Temperature Sensor Wiring

SEN

J20-1

J20-2

C08460

Fig. 39 -- RTU Open T--55 Sensor Connections

581J

Space Temperature (SPT) Sensors —

There are 2 types of SPT sensors available from Bryant, resistive input non-communicating (T55, T56, and T59) and Rnet communicating (SPS, SPPL, SPP, and SPPF) sensors. Each type has a variety of options consisting of: timed override button, set point adjustment, a LCD screen, and communication tie in. Space temperature can be also be written to from a building network or 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 (T--55)

S 33ZCT56SPT, space temperature sensor with override

button and setpoint adjustment (T--56)

S 33ZCT59SPT, space temperature sensor with LCD

(liquid crystal display) screen, override button, and setpoint adjustment (T--59)

Use 20 gauge wire to connect the sensor to the controller. The wire is suitable for distances of up to 500 ft. Use a three--conductor shielded cable for the sensor and setpoint adjustment connections. If the setpoint adjustment (slidebar) is not required, then an unshielded, 18 or 20 gauge, two--conductor, twisted pair cable may be used.

Connect T--55: See Fig. 38 for typical T--55 internal connections. Connect the T--55 SEN terminals to RTU Open J20--1 and J20--2. See Fig. 39.

Connect T--56: See Fig. 40 for T--56 internal connections. Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to RTU Open J20--1, J20--2 and J20--3 per Fig. 41.

SW1

Cool Warm

SEN

RED(+)

WHT(GND)

BLK(-)

SET

BRN (GND) BLU (SPT)

BLK (T56)

CCN COM

SENSOR WIRING

JUMPER TERMINALS AS SHOWN

C08202

Fig. 40 -- T--56 Internal Connections

SEN J20-1

SEN

Jumper

SET

J20-2

SET

J20-3

Fig. 41 -- RTU Open T--56 Sensor Connections

C08461

Connect T--59: The T--59 space sensor requires a separate, isolated power supply of 24 VAC. See Fig. 42 for internal connections at the T--59. Connect the SEN terminal (BLU) to RTU Open J20--1. Connect the COM terminal (BRN) to J20--2. Connect the SET terminal (STO or BLK) to J20--3.

BLK (STO)

BRN (COM)

BLU (SPT)

OR SET SEN

OPB COM- PWR+

J20-3

J20-2

J20-1

581J

POWER

24 VAC

NOTE: Must use a separate isolated transformer.

WIRING

Fig. 42 -- Space Temperature Sensor Typical Wiring

(33ZCT59SPT)

Indoor Air Quality (CO

)Sensor—

The indoor air quality sensor accessory monitors space carbon dioxide (CO

) levels. This information is used to

monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with and without LCD display, and in combination with space temperature sensors. Sensors use infrared technology to measure the levels of CO

The CO

sensors are all factory set for a range of 0 to

present in the space air.

2000 ppm and a linear mA output of 4 to 20. Refer to the instructions supplied with the CO

sensor for electrical

requirements and terminal locations. See Fig. 43 for typical CO

sensor wiring schematic.

To accurately monitor the quality of the air in the conditioned air space, locate the sensor near a return--air grille (if present) so it senses the concentration of CO leaving the space. The sensor should be mounted in a location to avoid direct breath contact.

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 before it is drawn into the return airstream.

SENSOR WIRING

C10291

24 VAC

24 VDC

J3 J4

Fig. 43 -- Indoor/Outdoor Air Quality (CO2)Sensor

(33ZCSENCO2) -- Typical Wiring Diagram

Wiring the Indoor Air Quality Sensor: For each sensor,

use two 2--conductor 18 AWG (American Wire Gage) twisted--pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 43. Connect the 4--20 mA terminal to RTU Open J4--2 and connect the SIG COM terminal to RTU Open J4--3. See Fig. 44.

IAQ Sensor

SEN

COM

24 VAC

Fig. 44 -- RTU Open / Indoor CO2Sensor

(33ZCSENCO2) Connections

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus weatherproof enclosure) —

The outdoor air CO dioxide (CO

) levels in the outside ventilation air and

sensor is designed to monitor carbon

interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged with an outdoor cover. See Fig. 45. The outdoor air CO

sensor must be located in the

economizer outside air hood.

0-10VDC

SIG COM

4-20mA

NC COM

}

ALARM RELAY CONTACTS

C08635

J4-2

J4-3

C08462

COVER REMOVED SIDE VIEW

C07135

Fig. 45 -- Outdoor Air Quality Sensor Cover

Wiring the Outdoor Air CO

Sensor: A dedicated

power supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 43. Connect the 4 to 20 mA terminal to RTU Open J4--5. Connect the SIG COM terminal to RTU Open J4--6. See Fig. 46.

OAQ Sensor/RH Sensor

Space Humidity Sensor or Humidistat — Perfect Humidityt Control Wiring: In units equipped

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. Disconnect the J11 Phoenix style connector from the board and use the plug screws to secure the pink wires in pins 7 and 8, reconnect the plug to the board at J11.

Relative Humidity Sensors (Space or Duct Mounted):

The accessory space humidity sensor (33ZCSENSRH-01) or duct humidity sensor (33ZCSENDRH-01) is used to measure the relative humidity of air within the space or return air duct. The RH reading is used to control the Perfect Humidityt option of the rooftop unit. For wiring distances up to 500 ft (152 m), use a 3--conductor, 18 or 20 AWG shielded cable. The shield must be removed from the sensor end of the cable and grounded at the unit end. The current loop power for sensor is provided by the RTU Open controller as 24vdc. Refer to the instructions supplied with the RH sensor for the electrical requirements and terminal locations. RTU Open configurations must be changed after adding an RH sensor. See Fig. 47 and 48 for typical RH sensor wiring.

S J4--1 or J4--4 = 24vdc loop power S J4--2 or J4--5 = 4--20mA signal input

NOTE: The factory default for dehumidification control is normally open humidistat.

581J

SEN

COM

J4-5

J4-6

24 VAC

C08463

Fig. 46 -- RTU Open / Outdoor CO2Sensor

(33ZCSENCO2) Connections

Smoke Detector/Fire Shutdown (FSD) —

On 581J units equipped with factory--installed Smoke Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s CTB input. The FSD function is initiated via the smoke detector’s Alarm NO contact set. The RTU Open controller communicates the smoke detector’s tripped status to the BAS building control. See Figs. 35 and 36, the RTU Open System Control wiring schematics.

The Fire Shutdown Switch configuration,

→

Config→Inputs→input 5, identifies the

normally open status of this input when there is no fire alarm.

MOUNTING HOLES

Gnd

Vin

SW2

123456

Vin - J4-1 or J4-4 24Vdc Io - J4-2 or J4-5 -20mA output

WIRING OPENING

C11087

Fig. 47 -- Space Relative Humidity Sensor Typical Wiring

J4-1 or J4-4 + 24 VDC Supply Voltage

J4-2 or J4-5 (-) 4 to 20 mA Current Loop Output

to RTU-OPEN

4-20 VAC GND 0-5V mA or or VDC 0-10V

SPAN

Relative Humidity Sensor (Polarized Male Connector)

ZERO

581J

Fig. 48 -- Duct Relative Humidity Sensor Typical Wiring

Humidistat: Use of a field--supplied humidistat provides

the RTU Open insight to the relative humidity in the space. The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact. The humidistat is a dedicated input on the configurable input 9 and tells the RTU Open when the RH level is HIGH or LOW. The normal condition for humidity is LOW. A normally open humidistat is the factory default control for the Perfect Humidityt option.

To wire in the field:

S J5--8 = 24 VAC source for dry contact S J5--7 = Signal input

Connecting Discrete Inputs —

Filter Status: The filter status accessory is a

field--installed accessory. This accessory detects plugged filters. When installing this accessory, the unit must be configured for filter status by setting

→

Config→Inputs→input3,5,8,or9to Filter

Status and normally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 34 and Figs. 35 or 36 for wire terminations at J5.

C10839

Remote Occupancy: The remote occupancy accessory is a field--installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote occupancy by setting

→

Config→Inputs→input3,5,8,or9to Remote

Occupancy and normally open (N/O) or normally closed (N/C).

→

Also set MENU

Schedules→occupancy source to DI

on/off. Input 8 or 9 is recommended for easy of installation. Refer to Fig. 34 and Table 3 for wire terminations at J5.

Power Exhaust (output): The relay used by the RTU Open board to control power exhaust is a dry contact which means it does not have 24vac. This 24vac must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory. A 24vac source must be provided to J11--2 on the RTU Open control board. This can be provided by the unit’s transformer from various sources. The “R” terminal on the unit’s low voltage terminal board (LVTB) is a logical source. Refer to Fig. 34 and Figs. 35 or 36 for wire terminations at J11.

Fan Status: The 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

→

Config→Inputs→input3,5,8,or9to 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. 34 and Figs. 35 or 36 for wire terminations at J5.

Communication Wiring -- Protocols

The RTU Open can be set to communicate on four different protocols: BACnet, Modbus, N2, and LonWorks.

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.

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. 49 and 50 for protocol switch settings and address switches. The 3rd party connection to the RTU Open is through plug J19. See Fig. 51 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)

Modbus (Slave)

N2 (Slave)

LonWorks Unused ON ON OFF ON OFF OFF OFF

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

Unused OFF OFF OFF ON OFF Select Baud Select Baud

Unused OFF OFF ON ON OFF Select Baud Select Baud

Unused OFF OFF OFF ON ON OFF OFF

581J

Baud Rate Selections

BAUD RATE DS2 DS1

9600 OFF OFF

19,200 ON OFF

38,400 OFF ON

76,800 ON ON

Fig. 49 -- RTU Open SW3 Dip Switch Settings

Fig. 50 -- RTU Open Address Switches

C07166

C10815

Fig. 51 -- Network Wiring

C10816

Local Access

BACview6Handheld: The BACview6is a keypad/display

interface used to connect to the RTU Open to access the control information, read sensor values, and test the RTU, see Fig. 52. This is an accessory interface that does not come with the RTU Open controller and can only be used at the unit. Connect the BACview local access port. There are 2 password protected levels in the display (User and Admin). The user password is defaulted to 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.

581J

to the RTU Open J12

Virtual BACview: Virtual BACview is a freeware computer

program that functions as the BACview

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 Open Troubleshooting — Communication LEDs The LEDs indicate if the

controller is speaking to the devices on the network. The LEDs should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LEDs will appear. See Table 4.

Cable

Access Port

P1 P1

J12

P5 P5

BACview

Fig. 52 -- BACview6Handheld Connections

Protocol Selector

RTU Open

Local Access Cable

C10812

Table 4 – LEDs

The LEDs on the RTU Open show the status of certain functions

If this LED is on... Status is...

Power RTU Open has power

Rx RTU Open is receiving data from the network segment

Tx RTU Open is transmitting data over the network segment

DO# The digital output is active

The Run and Error LEDs indicate control module and network status

If Run LED shows...

2 flashes per second Off Normal

2 flashes per second

2 flashes per second On

5 flashes per second On Exec start---up aborted, Boot is running

5 flashes per second Off Firmware transfer in progress, Boot is running

7 flashes per second

14 flashes per second

On On

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.

And Error LED shows... Status is...

2flashes, alternating with Run LED

3flashes, then off

4flashes, then pause

7 flashes per second, alternating with Run LED

14 flashes per second, alternating with Run LED

Enthalpy Switch

Five minute auto ---restart delay after system error

Control module has just been formatted

Two or more devices on this network have the same ARC156 network address

Exec halted after frequent system errors or control programs halted

Ten second recovery period after brownout

Brownout

Failure. Try the following solutions:

S TurnRTUOpenoff,thenon. S Format RTU Open. S Download memory to RTU Open. S Replace RTU Open.

24V

GND

RED

BLK

PL6-1 (24-V)

PL6-4 (COM)

581J

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. (The separate field--installed accessory return air enthalpy sensor (33CSENTSEN) is required for differential enthalpy control. See Fig. 53.)

Locate the enthalpy control in the economizer next to the Actuator Motor. Locate two GRA leads in the factory harness and connect the gray lead labeled “ESL” to the terminal labeled “LOW”. See Fig. 53. Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to 24V) and BLK (connect to GND).

LOW

GRA

Factory Wiring Harness

CTB ECON

(RTU Open: to J2-6)

C11169

Fig. 53 -- Enthalpy Switch (33CSENTHSW) Connections

The outdoor enthalpy changeover setpoint is set at the enthalpy controller.

Differential Enthalpy Control —

Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions. Install the outdoor air enthalpy control as described above. Add and install a return air enthalpy sensor.

Return Air Enthalpy Sensor —

Controller —

Mount the return--air enthalpy sensor (33CSENTSEN) in the return--air section of the economizer. The return air sensor is wired to the enthalpy controller (33CSENTHSW). See Fig. 54.

PL6-1 (24-V)

PL6-4 (COM)

CTB ECON

(RTU Open: to J2-6)

581J

RED – 4-20 Main

+ VDC Out

Outside Air Enthalpy Switch

+ 24-36 VDC In

– 4-20 Main Out

24V

GND

LOW

BLK

GRA

Return Air Enthalpy Sensor

Fig. 54 -- Outside and Return Air Enthalpy Sensor

Wiring

To wire the return air enthalpy sensor, perform the following:

1. Use a 2--conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthalpy controller.

2. Connect the field--supplied RED wire to (+) spade connector on the return air enthalpy sensor and the (+) terminal on the enthalpy controller. Connect the BLK wire to (--) spade connector on the return air enthalpy sensor and the (--) terminal on the enthalpy controller.

Smoke Detectors

Smoke detectors are available as factory--installed options on 581J 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. Return Air smoke detectors are arranged for vertical return configurations only. All components necessary for operation are factory--provided and mounted. The unit is factory--configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.

Units equipped with factory--optional Return Air smoke detectors require a relocation of the sensor module at unit installation. See “Completing Installation of Return Air

Smoke Sensor:” on page 36 for details. System —

The smoke detector system consists of a four--wire controller and one or two sensors. Its primary function is to shut down the rooftop unit in order to prevent smoke from circulating throughout the building. It is not to be used as a life saving device.

C11170

The controller (see Fig. 55) 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 access to the wiring terminals. The controller has three LEDs (for Power, Trouble and Alarm) and a manual test/reset button (on the cover face).

Duct smoke sensor

controller

Conduit nuts

(supplie d by installer)

Conduit s upport plate

Controll er housing

and electronics

Conduit c ouplings

(supplie d by installer)

Alarm

Fastener

(2X)

Terminal block cover

Troub le

Power

Test/reset switch

Cover gasket

(ordering option)

Controll er cover

C08208

Fig. 55 -- Controller Assembly

Sensor Module —

The sensor module (see Fig. 56) includes a plastic housing, a printed circuit board, a clear plastic cover, a sampling tube inlet and an exhaust tube. The sampling tube (when used) and exhaust tube are attached during installation. The sampling tube varies in length depending on the size of the rooftop unit. The clear plastic cover permits visual inspections without having to disassemble the sensor. The cover attaches to the sensor housing using four captive screws and forms an airtight chamber around the sensing electronics. Each sensor includes a harness with an RJ45 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the left--side of the housing).

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. When a sufficient amount of smoke is detected in the sensing chamber, the sensor signals an alarm state and the controller automatically

takes the appropriate action to shut down fans and blowers, change over air handling systems, notify the fire alarm control panel, etc.

The sensor uses a process called differential sensing to prevent gradual environmental changes from triggering false alarms. A rapid change in environmental conditions, such as smoke from a fire, causes the sensor to signal an alarm state but dust and debris accumulated over time does not.

For installations using two sensors, the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition.

Duct smoke sensor

Exhaust tube

See

Detail A

Intake

gasket

Plug

TSD-CO2

(ordering option)

Sampling tube

(ordered separately)

Exhaust gasket

Coupling

Sensor housing and electro nics

Cover gasket

(ordering option)

Sensor cover

Smoke Detector Sensor

C08245

Fig. 57 -- 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. 58. 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 controller location. (This sensor is shipped in a flat--mounting location. Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected. See “Completing Installation of Return Air Smoke Sensor:” on page 36 for details.)

Return Air Detector module (shipping position shown)*

Controller module

581J

Magnetic test/reset

switch

Alarm

Troub le

Power Dirty

C08209

Fig. 56 -- Smoke Detector Sensor

Smoke Detector Locations

Supply Air —

The Supply Air smoke detector sensor is located to the left of the unit’s indoor (supply) fan. See Fig. 57. Access is through the fan access panel. There is no sampling tube used at this location. The sampling tube inlet extends through the side plate of the fan housing (into a high pressure area). The controller is located on a bracket to the right of the return filter, accessed through the lift--off filter panel.

Return Air Detector Sampling Tube

*RA detector must be moved from shipping position to operating position by installer

C07307

Fig. 58 -- Typical Return Air Detector Location

Return Air with Economizer —

The sampling tube is inserted through the side plates of the economizer housing, placing it across the return air opening on the unit basepan. See Fig. 59. 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 controller location. (This sensor is shipped in a flat--mounting location. Installation requires that this sensor be relocated to its operating location and the tubing to the sampling tube be connected. See the following installation procedure.)

Screws

Flexible Exhaust Tubes

Sample Tube

Return Air Sampling Tube

Fig. 59 -- Return Air Sampling Tube Location

581J

Completing Installation of Return Air Smoke Sensor:

1. Unscrew the two screws holding the Return Air Sensor detector plate. See Fig. 60. Save the screws.

2. Remove the Return Air Sensor and its detector plate.

3. Rotate the detector plate so the sensor is facing outwards and the sampling tube connection is on the bottom. See Fig. 61.

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 exhaust tube is on the top. See Fig. 61.

5. Connect the flexible tube on the sampling inlet to the sampling tube on the basepan.

C08126

Fig. 60 -- Return Air Detector Shipping Position

C08129

C08127

Fig. 61 -- Return Air Sensor Operating Position

Additional Application Data —

Refer to Catalog No. HKRNKA--1XA for discussions on additional control features of these smoke detectors including multiple unit coordination.

NOM.

V --- P h --- H z

UNIT

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*07

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*08

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*09

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*12

5 7 5 --- 3 --- 6 0

Table 5 – Unit Wire/Fuse or HACR Breaker Sizing Data

NO C.O. or UNPWR C.O.

IFM

TYPE

STD

MED 34.3 50 34 185 38.1 50 38 189

HIGH 41.8 60 43 211 45.6 60 47 215

STD

MED 17.1 25 17 94 18.9 25 19 96

HIGH 21.1 30 22 107 22.9 30 24 109

STD

MED 13.3 20 13 76 17.1 20 17 80

HIGH 16.1 20 16 90 19.9 25 21 94

STD

MED 38.8 50 41 202 42.6 50 45 206

HIGH 43.6 50 46 245 47.4 60 51 249

STD

MED 17.9 20 19 101 19.7 25 21 103

HIGH 19.7 25 21 123 21.5 25 23 125

STD

MED 12.7 15 13 81 16.5 20 18 85

HIGH 13.5 15 14 92 17.3 20 19 96

STD

MED 39.0 50 41 202 42.8 50 45 206

HIGH 43.8 50 46 245 47.6 60 51 249

STD

MED 18.2 20 19 101 20.0 25 21 103

HIGH 20.0 25 21 123 21.8 25 23 125

STD

MED 14.0 20 15 81 17.8 20 19 85

HIGH 14.8 20 16 92 18.6 20 20 96

STD

MED 52.0 60 55 325 55.8 60 60 329

HIGH 57.0 70 61 334 60.8 70 65 338

STD

MED 24.8 30 26 157 26.6 30 28 159

HIGH 27.8 30 30 161 29.6 35 32 163

STD

MED 18.1 20 19 116 21.9 25 24 120

HIGH 20.9 25 22 130 24.7 30 27 134

COMBUSTION

FAN MOTOR

FLA

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

POWER

EXHAUST

FLA

MCA

32.0 50 31 148 35.8 50 36 152

16.3 25 16 75 18.1 25 18 77

11.7 15 11 61 15.5 20 16 65

38.8 50 41 191 42.6 50 45 195

17.9 20 19 95 19.7 25 21 97

11.9 15 12 77 15.7 20 17 81

39.0 50 41 191 42.8 50 45 195

18.2 20 19 95 20 25 21 97

13.2 15 14 77 17 20 18 81

47.2 60 50 282 51.0 60 54 286

23.0 30 24 135 24.8 30 26 137

17.3 20 18 105 21.1 25 23 109

NO P.E. w/ P.E. (pwrd fr/ unit)

FUSE

HACR

BRKR

DISC. SIZE

MCA

FLA LRA FLA LRA

FUSE

or HACR BRKR

DISC. SIZE

581J

See: “Legend and Notes for Table 5” on page 39.

581J

NOM.

V --- P h --- H z

UNIT

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*07

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*08

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*09

5 7 5 --- 3 --- 6 0

208/230--- 3--- 60

4 6 0 --- 3 --- 6 0

581J*12

5 7 5 --- 3 --- 6 0

Table 5 — Unit Wire/Fuse or HACR Breaker Sizing Data (cont)

w/ PWRD C.O.

IFM

TYPE

STD

MED 39.1 50 39 190 42.9 60 44 194

HIGH 46.6 60 48 216 50.4 60 52 220

STD

MED 19.3 25 19 96 21.1 30 22 98

HIGH 23.3 30 24 109 25.1 30 26 111

STD

MED 15.0 20 15 78 18.8 25 19 82

HIGH 17.8 25 18 92 21.6 25 23 96

STD

MED 43.6 50 46 207 47.4 60 51 211

HIGH 48.4 60 52 250 52.2 60 56 254

STD

MED 20.1 25 21 103 21.9 25 23 105

HIGH 21.9 25 23 125 23.7 30 26 127

STD

MED 14.4 20 15 83 18.2 20 20 87

HIGH 15.2 20 16 94 19.0 25 21 98

STD

MED 43.8 50 46 207 47.6 60 51 211

HIGH 48.6 60 52 250 52.4 60 56 254

STD

MED 20.4 25 22 103 22.2 25 24 105

HIGH 22.2 25 24 125 24.0 30 26 127

STD

MED 15.7 20 17 83 19.5 25 21 87

HIGH 16.5 20 18 94 20.3 25 22 98

STD

MED 56.8 70 61 330 60.6 70 65 334

HIGH 61.8 70 66 339 65.6 80 71 343

STD

MED 27.0 30 29 159 28.8 35 31 161

HIGH 30.0 35 32 163 31.8 35 34 165

STD

MED 19.8 25 21 118 23.6 30 26 122

HIGH 22.6 25 24 132 26.4 30 29 136

COMBUSTION

FAN MOTOR

FLA

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

0.48 3.8

0.25 1.8

0.24 3.8

POWER

EXHAUST

FLA

MCA

36.8 50 37 153 40.6 50 41 157

18.5 25 19 77 20.3 30 21 79

13.4 20 13 63 17.2 20 18 67

43.6 50 46 196 47.4 60 51 200

20.1 25 21 97 21.9 25 23 99

13.6 15 14 79 17.4 20 19 83

43.8 50 46 196 47.6 60 51 200

20.4 25 22 97 22.2 25 24 99

14.9 20 16 79 18.7 20 20 83

52.0 60 55 287 55.8 60 60 291

25.2 30 27 137 27.0 30 29 139

19.0 25 20 107 22.8 25 25 111

NO P.E. w/ P.E. (pwrd fr/ unit)

FUSE

HACR

BRKR

DISC. SIZE

MCA

FLA LRA FLA LRA

FUSE

or HACR BRKR

DISC. SIZE

See: “Legend and Notes for Table 5” on page 39.

Legend and Notes for Table 5

LEGEND:

BRKR --- Circuit breaker CO --- Convenient outlet DISC --- Disconnect FLA --- Full load amps LRA --- Locked rotor amps MCA --- Minimum circuit amps P E --- P o w e r e x h a u s t PWRD CO --- Powered convenient outlet UNPWR CO --- Unpowered convenient outlet NOTES:

1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and

440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Canadian units may be fuse or circuit breaker.

2. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the f ollowing 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)

= 227

681

Determine maximum deviation from average voltage. (AB) 227 – 224 = 3 v (BC) 231 – 227 = 4 v (AC) 227 – 226 = 1 v Maximum deviation is 4 v. Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

= 1.76%

227

This amount of p hase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

581J

Economizer 2 Position Damper

Fig. 62 -- EconoMi$ert IV Wiring

Step 13 — Adjust Factory--Installed Options

Smoke Detectors —

Smoke detector(s) will be connected at the Controls Connections Board, at terminals marked “Smoke Shutdown”. Remove jumper JMP 3 when ready to energize unit.

EconoMi$er IV Occupancy Switch —

Refer to Fig. 62 for general EconoMi$er IV wiring. External occupancy control is managed through a connection on the Central Terminal Board.

If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoccupied sequence) at terminals marked OCCUPANCY on CTB. Remove or cut jumper JMP 2 to complete the installation.

Step 14 — Install Accessories

Available accessories include:

Roof Curb Thru--base connection kit (must be installed before unit

is set on curb) LP conversion kit Manual outside air damper

Unit Without Economizer o 2 Position Damper

C10150

High Altitude Gas kits Flue Discharge Deflector Flue Exhaust Heat Shield Low Ambient Controls Thermostat / Sensors Two--Position motorized outside air damper EconoMi$er2 (without control/for external signal and

integrated barometric relief) EconoMi$er2 (without control/for external signal) Power Exhaust Differential dry--bulb sensor (EconoMi$er IV) Outdoor enthalpy sensor Differential enthalpy sensor CO

sensor

Louvered hail guard Phase monitor control Winter Start kit

Refer to separate installation instructions for information on installing these accessories.

Pre--Start and Start--Up

This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre--Start and Start--up instructions.

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: II581J---10

Replaces: II581J --- 01 & II581J---03

Bryant PURON 581J User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual