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Bryant PURON 581J User's Manual

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2. m s R CLV z FIOP 119 pH KD ACCESSORY POWER 3 Lori sus mmm f VC SMOKE 8 45 4 PNK n SENSOR ac ORN m n SEE SMOKE P HUMIDISTAT eux SENSOR D i Px We moi y 5 5 8 s eR 3 2 AMPS GRN YEL ALARM DH eR i SMOKE CONTROL REHEAT CONTROL 6 FIOP ACCESSORY 3 2 AMPS GRN YEL Im m i Th pit a 49 m 3 2 AMPS GRN YEL aut 8 wy n GRA BRN 1i om BRN EL PLZO 1 MEG 5 Lo did BM PL20 2 RED cee B mm xb sme p uem n3 ath 5 N aH re BR R E 0 4 XN tun e AX om 5 Df el eu CORD vi poen li 5 00t FOR FIELD USE NECS ee SHUTDOWN HC al INTROL H WIRING i VINO TA i i ror pp M NE gt ee ic its ig Gi i 3 ON CE 4 EE 105 108 lt premo T9 S 5 E REHEAT y
3. ROOFCURB A UNIT SIZE 1 ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED ACCESSORY 2 INSULATED PANELS 1 THK POLYURETHANE FOAM 1 3 4 DENSITY 1 2 3 DIMENSIONS IN ARE IN MILLIMETERS CRRFCURBOO03A02 356 4 ROOFCURB 18 GAGE STEEL ON 14 CURB AND 16 GAGE STEEL ON 24 CURB 581J 12 5 ATTACH DUCTWORK TO CURB FLANGES OF DUCT REST ON CURB 6 SERVICE CLEARANCE 47 ON EACH SIDE CRRFCURBO004A02 7 EZD DIRECTION OF AIR FLOW 8 CONNECTOR PACKAGES CRBTMPWROO1A01 AND 2 01 ARE FOR THRU THE CURB TYPE CONNECTIONS PACKAGES CRBTMPWROO3AO AND 4 01 ARE FOR THE THRU THE BOTTOM TYPE CONNECTIONS CONNECTOR PKG ACC B C D ALT DRAIN HOLE GAS POWER CONTROL ACCESSORY PWR CRBTMPWROO A01 2 8 7 16 17 10 15 15 1 3 47 44 5 3 47 19 NPT 3 4 1 1 1 2 12 7 1 2 12 7 NPT CRBTMPWROO2A01 827 583 1 1 4 31 71 CRBTMPWROO3A01 1 2 112 7 NPT 3 4 191 CRBTMPWROO4A01 3 47 191 1 1 4 131 7 CM de ELE a UNIT hr 4l 0 3 5 167 IR fp GUPPLIED WITH CURB 1 2 gt X TYPICAL 4 SIDES N lt 1 FIELD SUPPLIED A COUNTER FLASHING 4 FIELD SUPPLIED h j ROOFING FELT Voy Ue my FIELD SUPPLIED CANT STRIP P Pd FIELD SUPPLIED SECTION C C SL LO ROOF ING MATERIAL SCALE 1 4 93 FIELD SUPPLIED 1 1 1 f 1 1
4. C11071 Fig 32 Typical Perfect Humidity Dehumidification System Humidistat Wiring Edge Programable Thermostat Unit CTB THERMOSTAT Rc OF x Rh C W1 2 2 O W2 B W1 Y1 Y2 Y1 OAT O R RRS UM D1 P ene R THERMOSTAT amp F vs g RACE 11068 Connection not required 09501 Fig 33 Typical Rooftop Unit with Perfect Humidity Dehumidification System with Edge Programmable Thermostat 22 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 2 package J4 J Board Po 5 B5 HE 2 5 Ge 22160 Rs E EA o SLPS 9206 859869 558 LOCAL ACCESS e PORT MSB LSB bis Rnett 1 907 90 CR2032 269 IS CND 9ga 9694 SW1 SW2 5 ZA The Open controller is an integrated component of the Bryant ro
5. STD UNIT CORNER CORNER CORNER CORNER UNIT WEIGHT WEIGHT A WEIGHT B WEIGHT C WEIGHT D 185 185 Las KG tes 185 KG X Y 1 581J 120 1099 499 337 153 307 139 217 98 238 108 42 110611 24 5 8 16261 23 1564 STANDARD UNIT WEIGHT IS WITH LOW GAS HEAT AND WITHOUT PACKAGING FOR OTHER OPTIONS AND ACCESSORIES REFER TO THE PRODUCT DATA CATALOG CORNER A CORNER CORNER D CORNER C FRON 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 installa tion 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 1 ad 457
6. HC UNITS ONLY OP ACCESSORY HALPY 5 55 ee o PE mmu z 2 8 8 252 zi A E i E 8 amp 3 8 8 a 8 S a e e d z lt 5 5 5 amp 2 z e lt E 5 ke a ES a z 2 5 Oj o a 2 o z o 8 5 2 2 5 g 8 a z x sd z B E s a 3 P 5 Fig 36 Open System Control Wiring Diagram with Perfect Humidity 25 C11070 5814 Table 3 Open Controller Inputs and Outputs POINT NAME mE com TYPE OF
7. RIGID INSULATION ues B i i FIELD SUPPLIED bon 3 3 5 8 1 4 1 100681 SUPPLY AIR 4 1 3 1 4 OPENING 4 Ben 4 OPENING FOR BASEPAN i md tese ENTRY SERVICE SEE NOTE 8 j rE 1 F ROOF ING MATERIAL 7 FIELD SUPPLIED 0 0 7 16 4 4 Heaps 62 76 18 167 172 787 Un 4 rM 3083 BOLT HEADS 761 4 07 9 4 0 13 16 d 7 16 4 BOLT HEADS 112401 BOLT HEADS 4 4 ha sg 2 SEE NOTE 8 1 8 3 16 7 5131 4 INSIDE 1 17 8 3 16 07 0 1 47171 4 PI 0 4 8 16 f 7 115 5 ll A 1 1 1 SUPPLY AIR RETURN 4 VIEW HEAD OF BOLT TO BE ON INSIDE OF FLANGE TYP ALL CORNERS VIEW B NOTE TYPICAL CORNER FASTENING DEVICE C11082 Fig 5 Roof Curb Details Size 12 10 Et MAXIMUM ALLOWABLE DIFFERENCE IN MM 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
8. Required bottom condensate drain connection Otherwise 36 914mm for condensate connection C10145 Fig 3 Service Clearance Dimensional Drawing NOTE Consider also the effect of adjacent units 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 7223 11 American National Standards Institute 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 elevat
9. x STD CONDENSATE DRAIN FILTER ACCESS PANEL FILTER DISPOSABLE FILTERS CONDENSER COIL 56 INDOOR COIL ACCESS PANEL OUTSIDE P RD X AIR qoo C OO SUPPLY RETURN BAROMETRIC AIR i AIR v RELIEF FLOW BACK RIGHT Vertical Connections Economizer 2 118 12 5 8 1131 13211 p 1 lt 1431 SID s CONDENSATE DRAIN 2838 CONDENSER FLUE 17201 COIL HOOD SUPPLY AIR 36 3 8 1925 0 1 8 f RETURN 110191 AIR 13 1 8 1353 5 3 4 1 11461 177 5 3 4 6 3 8 01461 11611 19631 110661 Horizontal Connections Economizer CONNECTION SIZES THRU THE BASE CHART THESE HOLES REQUIRED FOR USE CRBTMPWROO2AO1 004401 A 3 8 1351 DIA FIELD POWER SUPPLY HOLE oA ToC 641 DIA POWER SUPPLY KNOCKOUT THREADED CONDUIT SIZE WIRE USE REO D HOLE SIZES 1 2 ACC 1 8 22 2 C 1 3 4 51 DIA GUAGE ACCESS PLUG X 172 24V 1 8 22 2 D 1 8 22 DIA FIELD CONTROL WIRING HOLE Y 1 1 4 002 004 POWER 1 3 4 44 4 3 4 14 NPT CONDENSATE DRAIN 1 004 3 4 GAS 1 5 8 41 3 3 47 14 NPT GAS CONNECTION FOR THRU THE BASEPAN FACTORY OPTION FITTINGS FOR ONLY X Y amp Z ARE PROVIDED 6 2 51 DIA POWER SUPPLY KNOCK OUT 002 PROVIDES 3 4 FPT THRU CURB FLANGE amp FITTING Fig 2 Unit Dimensional Drawing Size 12 5 C11112 5814
10. 3 DIRECTION OF AIR FLOW 3 i 36 3 8 12 5 8 lt 7 19251 3211 1 RETURN AIR i RETURN AIR UNIT J K H 1 41114 33 15 7 8 581 018 10481 6581 4031 mb NES 581J 08p 49 3 8 36 3 8 15 1 8 E 11253 19251 14031 CONDENSATE 49 3 8 36 3 8 15 1 8 OPENING 381J 09D 1253 19251 403 3 TN IBASEPAN 27 518 40 38 MH H SEE THRU EW THE BASE SUPPEN CHART 18 1 Ji 14691 412 or 11 12191 Y 31A L 2955 8 6 1 4 7511 la Pie nu 1631 1159 1001 1608 3561 I 25 1 2 4 5 8 ae 641 1118 sr q ELECTRICAL CONTROL BOX DISCONNECT ACCESS PANEL 1 LOCATION CONDENSER COIL E mora gt J FACTORY INSTALLED FACTORY 21 118 DISCONNECT INSTALLED D H 109 s s HANDLE CONVENIENCE OUTLET 1 a H i T CT 2 5 8 L 8 3 8 167 2 41 uS 940 88 1 8 WIDTH FRONT 22381 FILTER
11. qp SN Ec COUNTER FLASHING t oy Sae oh NY FIELD SUPPLIED ua Ma N ROOFING FELT 5 FIELD SUPPLIED asit 5 E SECTION coc xe af out ROOFING MATERIAL SCALE 1 4 E bud N FIELD SUPPLIED ba p WN 1 i We ANM 1 1 1 II FIELD SUPPLIED ion ante 3 3 5 8 1 4 T1008 SUPPLY AIR 1 3 1 4 OPENING Set 4 cen 4 OPENING FOR BASEPAN i et ope en _ 4 ENTRY SERVICE SEE NOTE 8 KE 1 x ROOF ING MATERIAL 0 0 7716 FIELD SUPPLIED 27 6 15 16 1 2 7 8 1 2 4 5 BOLT HEADS 3781 m do 0 2 1 8 0 0 718 pes jame 69 7 16 2 gt 052 273 SEE NOTE 2 BOLT HEADS 11240 BOLT HEADS 4 SES c f 4 at T 3 CLE 4 1 lt gt Q 4 C3 7 SEE NOTE 8 1 8 3 16 D lt 4 1513 0 4 5 16 4 INSIDE NEQUID 4 25 18 3 16 4 S O 07 0 1 4 71 4 1 Ll N i 0 4 9 16 115 51 a 1 1 SUPPLY AIR RETURN AIR 4 4 VIEW HEAD OF BOLT TO BE ON INSIDE OF FLANGE 4 NOTE TYPICAL CORNER 4 1 5 07 1 7 1251 481 lt n SEE VIEW E VIEW TYP ALL CORNERS C11081 Fig 4 Roof Curb Details Sizes 07 09 5814 NOTES
12. O NUMBER S DEDICATED INPUTS Space Temp Zone Temp zone_temp Al 10K Thermistor J20 1 2 Supply Air Temperature sa temp Al 10K Thermistor J2 1 2 Outdoor Air Temperature oa temp Al 10K Thermistor J2 3 4 Space Temperature Offset Pot stpt adj offset Al 100K Potentiometer J20 3 Safety Chain Feedback safety_status DI 24 VAC J1 9 Compressor Safety Status comp_status DI 24 VAC J1 2 Fire Shutdown Status firedown_status DI 24 VAC J1 10 Enthalpy Status enthalpy_status DI 24 VAC J2 6 Humidistat Input Status humstat_status DI 24 VAC J5 7 CONFIGURABLE INPUTS Indoor Air CO2 iaq Al 4 20 ma Outdoor Air CO2 4 20 ma J4 2 or J4 5 Space Relative Humidity space rh Al 4 20 ma Supply Fan Status sfan status DI 24 VAC Filter Status filler status DI 24 VAC 45 1 or J5 3 or Door Contact Input door contact status DI 24 VAC J5 5 or J5 7 Occupancy Contact occ contact status DI 24 VAC OUTPUTS Economizer Output econ output AO 4 20 J2 5 Supply Fan Relay State sfan DO Relay 24VAC 1A J1 4 Compressor 1 Relay State comp 1 DO Relay 24VAC 1A J1 8 Compressor 2 Relay State comp 2 DO Relay 24VAC 1A J1 7 Heat Stage 1 Relay State heat 1 DO Relay 24VAC 1A J1 6 Heat Stage 2 Relay State heat 2 DO Relay 24VAC 1A J1 5 Power Exhaust Relay State pexh DO Relay 24VAC 1A J11 3 Dehumidification Relay State dehum DO Relay 24VAC 1A J11 7 8 LEGEND Analog Input AO Analog Output DI Discrete Input DO
13. 31 5814 Local Access BACview Handheld The BACview is 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 to the Open 112 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 Cable 1 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 20 MSB LSB 997 o2 SWi 5 RR Protocol Selector P5 P5 BACview Local Access Cable C
14. lt 2 x lt 6 RED e 11 Wy NTRALPT SENSOR z5 50 50 A YEL NOT ust 19 Tor Deme Le a soll 2v Tov 4 ORN D 10 10 RED YEL 8 5 SR FREE d cer 8 ACCESSORY srl 00 i 2 i RAT ENTHALPY SENSOR 200 B e a BLU D 1802 i Ca BLK 3 11 lt a c od US f A mda inei BRN 4 x 6 1 O G6RA INCHES AIT 5X RESISTER SHOULD BE REMOVED ONLY WHEN a E 1 1i amp n USING DIFFERENTIAL ENTHALPY OR DRY BULB GRA lt GRA A SEPERATE FIELD SUPPLIED 24V TRANSFORMER 15 USED FOR THE TAN 5 3s Tio SENSOR PONER SU LY IT CANNOT HAVE THE SECONDARY OF THE 9 1 i 1 d R FIELD INSTALLED REMOTE MINIMUM POSITION POT ORN 9 9 om OE NS REMOVE BLACK WIRE JUMPER BETWEEN P AND P1 AND SET PWR EXHAUST 12 NET CONTROL MINIMUM POSITION POT TO THE MINIMUM POSITION ACCESSO NOT USED lt lt lt r 12 m Unit Without Economizer or Economizer 2 Position Damper Fig 62 EconoMi er 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 oc
15. through the filter access opening and assemble per the steps outlined Economizer Hood and 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 bot tom of the indoor coil access panel See Fig 11 P TOP x PANEL o o INDOOR 5 INDOOR COIL x COIL ACCESS N ACCESS PANEL E PANEL 06025 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 INDOOR COIL ACCESS PANEL LEFT Wd HOOD SIDE 49110 483mm 1 27 HOOD DIVIDER 06026 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 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
16. 44 4 6 2 151 DIA POWER SUPPLY KNOCK OUT z 003 1 27 gag 1 8 126 61 004 3 4 FPT 13 4 44 4 0011 002 PROVIDES 3 4 THRU CURB FLANGE 8 FITTING HOLE SIZE 2 50 8 C11110 Fig 1 Unit Dimensional Drawing Sizes 07 09 3 5814 STD UNIT CORNER CORNER CORNER CORNER UNIT WEIGHT WEIGHT A WEIGHT B WEIGHT C WEIGHT D C G LBS KG LBS KG LBS KG LBS KG LBS X Y 7 581J 07A 165 165 3 15 152 1 69 3 214 1 91 4 232 3 105 4 42 3 8 110161 34 3 4 882 61 19 7 8 505 581J 080 925 419 51204 1 92 6 190 9 86 6 256 1 116 2 213 9 124 2 42 5 8 10821 34 1 8 861 22 1 8 581 5817 0940 925 419 51204 1 92 6 190 9 86 6 256 1 116 2 213 9 124 2 42 5 8 10821 34 1 8 861 22 1 8 581 STANDARD UNIT WEIGHT IS WITH LOW GAS HEAT AND WITHOUT PACKAGING FOR OTHER OPTIONS AND ACCESSORIES REFER TO THE PRODUCT DATA CATALOG CORNER A CORNER B Y CORNER D CORNER C x 7 i 55 Fig 1 Unit Dimensional Drawing Sizes 07 09 cont C11111 NOTES 1 DIMENSIONS ARE IN INCHES DIMENSIONS IN 1 ARE IN MILLIMETERS 25 4 CENTER OF GRAVITY 3 E3 DIRECT
17. CLOSE TO THIS END AS POSSIBLE DETAIL A DUCT END C06005 44 0 1120 41 5 1055 2235 44 0 1120 49 5 1255 2235 44 0 1120 49 5 1255 2235 32 0 815 49 5 1255 1 SPREADER BARS REQUIRED damage will occur if spreader bars 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 Fig 7 Rigging Details 11 5814 Positioning on Curb Position unit on roof curb so that the following clearances are maintained 1 4 in 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 that flue gas will not affect building materials
18. 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 21 m F Lm actual temp 59 outside temp 42 01 PIU Lg J C09502 Fig 31 Edge Programmable Thermostat 5814
19. Supply Voltage J4 2 or J4 5 4 to 20 mA Current Loop Output to RTU OPEN Relative Humidity Sensor Polarized Male Connector 4 20 VAC GND 0 5V mA or 0 10V C10839 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 Humidity option To wire in the field e 15 8 24 VAC source for dry contact e JS 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 MENU Config Inputs input 3 5 8 or 9 to 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 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 fo
20. 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 DIVIDER OUTSIDE AIR X CLEANABLE ALUMINUM FILTER a BAROMETRIC RELIEF Fig 13 Economizer Filter Installation FILTER CLIP 08634 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 BLOWER ACCESS FLUE OPENING PANEL 07081 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 54 ANSI 7223 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 13 5814 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 li
21. manual gas valve 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 WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron 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 CAUTION 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 40 3 8 10261 NOTES ut VERTICAL 1 DIMENSIONS ARE IN INCHES DIMENSIONS ECONOMIZER HOOD UM IN C ARE IN MILLIMETERS i OPTIONAL 2 CENTER OF GRAVITY
22. 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 e 33ZCTSSSPT space temperature sensor with override button T 55 33ZCT56SPT space temperature sensor with override button and setpoint adjustment T 56 33ZCTS9SPT 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 CCN COM SENSOR WIRING C08201 Fig 38 T 55 Space Temperature Sensor Wiring C08460 Fig 39 RTU Open T 55 Sensor Connections Connect T 56 See Fig 40 for T 56 internal connections Install a jumper between SEN and SE
23. 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 open ings 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 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 19 5814 For wire runs up to 50 ft 15 m use 18 AWG American Wire Gage insulated wire 35 C minimum For 50 to 75 ft 15 to 23 m us
24. sparingly and only to male threads of joint when making pipe connec tions 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 in structions 4 Pressure test all gas piping in accordance with local and national plumbing and gas codes before connect ing piping to unit Fig 18 Gas Piping with Thru Curb Accessory Unit Base Rail 07469 9 229 Burner Access __ 22 Panel Shut Off P di C Valve 07470 Fig 19 Gas Piping with Thru Curb Accessory alternate layout C08018 Fig 20 Gas Piping with Thru Base Accessory 5814 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 factory installed gas lines after all piping connections have been completed Use s
25. 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 NOTES ROOFCURB UNIT SIZE 1 ROOFCURB ACCESSORY 15 SHIPPED DISASSEMBLED ACCESSORY 2 INSULATED PANELS 1 POLYURETHANE FOAM 1 3 4 DENSITY 3 DIMENSIONS IN C J ARE IN MILLIMETERS 4 ROOFCURB 16 GAGE STEEL CRRFCURBO03A01 581J 07 09 5 ATTACH DUCTWORK TO CURB FLANGES OF DUCT REST ON CURB 6 SERVICE CLEARANCE 4 ON EACH SIDE CRRFCURBO004A01 Fie DIRECTION OF AIR FLOW 8 CONNECTOR PACKAGES CRBTMPWROO1A01 AND 2 01 ARE FOR THRU THE CURB GAS TYPE PACKAGES CRBTMPWROO3A01 AND 4A01 ARE FOR THE THRU THE BOTTOM TYPE GAS CONNECTIONS CONNECTOR PKG ACC B C D ALT DRAIN HOLE GAS POWER CONTROL ACCESSORY PWR CRBTMPWROO A01 27 8 7 16 17 10 15 16 1 3 4 44 51 3 4 19 3 4 19 NPT 1 2 12 71NPT 1 2 12 7 CRBTMPWROO2A01 827 583 1 1 4 31 7 CRBTMPWROO3A01 1 2 12 7 NPT 3 4 19 NPT CRBTMPWROO4A01 3 4 191 11 4 31 71 54 ji UNIT i i i LZ NAIL EO _ 7 TYPICAL 4 SIDES T er c uL FIELD SUPPLIED 0 7 18
26. with in square socket drive extension To use the alternate bottom drain connection remove the red drain plug from the bottom connection use a 1 2 square socket drive extension and install it in the side drain connection CONDENSATE PAN SIDE VIEW STANDARD DRAIN PLUG SIDE DRAIN FACTORY INSTALLED ALTERNATE BOTTOM DRAIN C08021 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 MINIMUM PITCH 1 25mm PER 10 3m OF LINE BASE RAIL 2 51 MIN OPEN VENT DARIN SEE NOTE C ROOF CURB DRAIN PLUG NOTE Trap should be deep enough to offset maximum unit static difference A 4 102 trap is recommended 08022 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 3 4 in 16 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 ele
27. 03 125 7 8 9 287 330 339 137 159 163 107 118 132 7 0 7 0 w pwrd fr unit MCA 40 6 42 9 20 3 21 1 17 2 18 8 DISC SIZE LRA 157 194 220 79 98 111 67 82 96 200 211 254 99 105 127 83 87 98 Legend and Notes for Table 5 LEGEND BRKR Circuit breaker CO Convenient outlet DISC Disconnect FLA Full load amps C US LRA Locked rotor amps MCA Minimum circuit amps PE Power exhaust 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 296 Use the following formula to de termine the percentage of voltage imbalance max voltage deviation from average voltage Voltage Imbalance 100 x average voltage Example Supply voltage is 230 3 60 A B C 224 v BC 231v AC 226v 224 231 226 681 Average Voltage 3 3 227 Determine maximum deviation from average voltage 227 224 BC 231 227 2 4v AC 227 226 2 1v Maximum deviation is 4 v Determine percent of voltage imbalance Voltage Imbalanc
28. 1 3 t t 2 1140 2 vo TES 3 1 oer S Ha nm 21 51519 3ALIV 138 422 AYO rd 800081 3 180 123810 LNOHLIM 170A SLG 17 80104 800081 iSVHd HLIM LINN 110A ONY 0 2 802 804 58012202176 NKOGLNHS 310838 ONY AONVdn220 iv13u 5501 ASVHd 580121130 AMONS 9 100 102 38V QuvOG TWNIWYAL NO SuidWnr GALVNOISAG 380583 72 532 81 1112812 14114415 01 09 00 HOLVW LON 5100 1 0 1 OIIVW3HOS QuVOB TVNIWHJL 71 310N OH me x E MAI wis ei wo 1 T an i d n 2 o t Nu8 934 QuvOB sL l1 8 200 d nu055322v 401 p SN pom II OLLVH3H2S 1N3N39NVHuUuV LNINOdWOD 3 eoceosnier M0 5322V 21 YdWOD 2 VA NOIS 8 6 1 LL YdWOD 2 IVA NOIOL S 1 AGLG AO9P A0 2 802 1041802
29. 10812 Fig 52 BACview Handheld Connections 32 Table 4 LEDs The LEDs on the RTU Open show the status of certain functions RTU Open has power RTU Open is receiving data from the network segment RTU Open is transmitting data over the network segment ID The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows And Error LED shows Statusis 2 flashes per second 2 flashes 2 flashes per second alternating with Run LED Five minute auto restart delay after system error 2 flashes per second 4 Control module has just been formatted Slashes per sec nd 4 flashes Two or more devices on this network have the P then pause same ARC156 network address 5 per second Exec halted after frequent system errors or P control programs halted 5 flashes per second 5 flashes per second Firmware transfer in progress Boot is running 7 flashes per second 4 per second alternating with Ten second recovery period after brownout 14 flashes per second Failure Try the following solutions e RTU Open off then on e Format RTU Open e Download memory to Open e Replace 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 33C
30. 11 for details 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 Confirm before installation of unit that voltage amperage and circuit protection requirements listed on unit data plate agree with power supply provided 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 ga
31. 581J SINGLE PACKAGE ROOFTOP GAS HEATING ELECTRIC COOLING UNIT SIZES 07 08 09 amp 12 with PURON R 410A REFIRGERANT Installation Instructions NOTE Read the entire instruction manual before starting the installation TABLE OF CONTENTS SAFETY CONSIDERATIONS 2 INSTALLATION 7 Jobsite iuueni ec i T Step 1 Plan for Unit Location 7 Roof edere hen 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 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 amp 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 Connection
32. ACCESS jaca dares cens 32 Open Troubleshooting 32 Outdoor Air Enthalpy Control 33 Differential Enthalpy Control 33 Return Air Enthalpy Sensor 34 Smoke Detectors 34 suere idm ene ORE Y s 34 Controller xax rd e Rd 34 Sensor Module 34 Smoke Detector 35 Supply Air eR ERREUR ERR 35 Return Air without Economizer 35 Return Air with Economizer 35 Step 13 Adjust Factory Installed Options 40 Step 14 Install Accessories 40 5814 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 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 uni
33. ACCESS PANEL CONDENSATE DRATN TOOL LESS CONDENSER COIL OUTSIDE INDOOR COIL AIR ACCESS PANEL ico gt E SUPPLY 1 4 RETURN BAROMETRIC AIR RIGHT AIR RELIEF FLOW Vertical Connections Economizer Ee E STD CONDENSATE DRAIN I 28 38 CONDENSER 11201 SUPPLY AIR 40 118 d 110191 5 3 4 1461 115118 Horizontal Connections Economizer THRU THE BASE CHART FIELD INST THESE HOLES REQUIRED FOR USE WITH ACCY KITS CONNECTION SIZES CRBTMPWROO1A01 07 GAS THRU CURB A 1 3 8 1351 DIA FIELD POWER SUPPLY HOLE THRU CURB THRU THE BASE CHART FIOP B 1 2 641 DIA POWER SUPPLY KNOCKOUT CRBTMPWRO04A01 08 09 GAS THRU BASEPAN FOR THRU THE BASEPAN FACTORY OPTION 5 FITTINGS FOR ONLY X Y amp Z ARE PROVIDED eJ T SP ITIN GAUGE ACCESS ETE WIRE FOR BELOW LISTED MODELS FIELD HDI a eee ee 172 ACC 1 8 122 W VALVE 3 4 14 NPT CONDENSATE DRAIN X 172 24V 1 8 122 2 581J 07 72K 8 125K BTU 127 14 NPT GAS CONNECTION 3717 001 003 7 1 8 28 6 98108 0975 KASR BTU 3 4 14 NPT GAS CONNECTION Y runs 002 004 POWER 1 374
34. Discrete Output These inputs if installed take the place of the default input on the specific channel according to schematic Parallel pins J5 1 2 6 45 3 J1 10 45 5 J1 2 are used for field installation The RTU Open controller requires the use of a Bryant space sensor A standard thermostat cannot be used with the RTU Open system 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 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 T ROOF 5 CURB SENSOR SUPPLY AIR LA Ty RETURN AIR C08200 Fig 37 Typical Mounting Location for Supply Air Temperature SAT Sensor on Small Roo
35. ION OF AIR FLOW 40 3 8 110261 VERTICAL 20 3 4 ECONOMIZER HOOD 526 OPTIONAL 36 3 8 1 RETURN ALR He e 1 RETURN AIR 40 3 8 11027 31 5 8 1 19551 gt 18 SUPPLY Wenn n P THRU THE BASE 1355 HRU THE BA HUE t 1 6 1 4 4 14 je 3 1 4 11591 y 11001 1831 nS E ALT CONDENSATE 25 1 2 DRAIN OPENING 16461 11 3 4 IN BASEPAN 12981 4 58 1181 Hr E E ELECTRICAL DISCONNECT J a LOCATION pa CONTROL BOX 8 ACCESS PANEL CONDENSER OPTIONAL INDOOR BLOWER COIL 1 FACTORY ACCESS OPTIONAL 9131 DISCOMEE JH FACTORY INSTALLED LJ HANDLE a HANDLE CONVENIENCE C4 A L OUTLET No ot E 4 2 5 8 8 3 8 59 1 2 ten e cur 115101 19401 LEFT DT mE 122381 FRON En MHM
36. 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 REMOVABLE HORIZONTAL RETURN DUCT OPENING COVER REMOVABLE HORIZONTAL SUPPLY DUCT OPENING COVER C06108 Fig 8 Horizontal Conversion Panels 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 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 Ho
37. ONDARY amp 93 12 120V F ay 600 ndi 12 3 H2 BLK WHT SECONDARY 120V GROUND FAULT INTERRUPTER CONVENIENCE OUTLET 14 i GF1 CO x2 93 GRN YEL 6 Lo GRN YEL SECONDARY r 41 120V BLK WHT SWITCH FUSE Grm 5 15 RE TRANS 08283 UNIT CONNECT PRIMARY TRANSFORMER VOLTAGE AS CONNECTIONS TERMINALS 208 240 L1 RED YEL 230 L2 BLU GRA 480 H1 H2 H4 L1 RED H1 Splice BLU 4 YEL H2 L2 GRA H4 L1 RED H1 L2 GRA H2 Fig 28 Powered Convenience Outlet Wiring 460 575 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 5046 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 Fusetr
38. OVA C11069 Diagram iring 24 RTU Open System Control W ig 35 F 102 HPS BLU BLU Loct 6 0 vio ORN ORN HPS h W DEHUMIDIFICATION R CLV LK 4814503251 8 n SEE NOTE 1 RED pi kez OL LM ORED o RED o YAC CONTROL 208 230V 460V 515V 3 60 7 5 8 5 TON MID TIER Eos p Loain BRN YEL J 2 ELS ap PL20 2 BR oFA A EZ L N RV BRN n Lo ox eo lt 10 0 104 1 1 E D D 2 3 4 x 5 9 S S 3 1 lt 6 16 Gr PNK P PLO R
39. SENTHSW 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 Exec start up aborted Boot is running Ga i av 7 CTB ECON GRA Open J2 6 Factory Wiring Harness o Low 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 33 5814 Return Air Enthalpy Sensor 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 S
40. 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 4 3 24 08462 Fig 44 Open Indoor CO Sensor 33ZCSENCO2 Connections Outdoor Air Quality Sensor 33ZCSENCO2 plus weatherproof enclosure The outdoor air sensor is designed to monitor carbon dioxide CO2 levels in the outside ventilation air and 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 28 414 3 3 4 6 1 2 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 t
41. Set heat anticipator settings at 0 14 amp for the first stage and 0 14 amp for second stage heating when available 20 Perfect Humidity 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 Pro Thermidistat with 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 sup plied 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 Fig 32 Refer to the instructions for the field sup plied humidistat for more information To connect the
42. T terminals as illustrated Connect T 56 terminals to Open J20 1 J20 2 and J20 3 per Fig 41 C2 amp nak CCN COM SENSOR WIRING OANE vu JUMPER TERMINALS AS SHOWN C08202 Fig 40 T 56 Internal Connections 8 EE GER 02 4 GED 203 08461 Fig 41 RTU Open T 56 Sensor Connections 27 5814 Connect T 59 The T 59 space sensor requires 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 ATEM Lees J20 3 BRN SENSOR 3 J202 WIRING BLU SPT joe RE J20 1 SET SEN OPB COM PWR OJOJOO yr dac POWER 24 WIRING NOTE Must use a separate isolated transformer C10291 Fig 42 Space Temperature Sensor Typical Wiring 33ZCT59SPT Indoor Air Quality CO2 Sensor The indoor air quality sensor accessory monitors space carbon dioxide CO2 levels This information is used to monitor IAQ levels Several types of sensors are available for wall moun
43. 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 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 35 5814 Return Air Sampling Tube 08129 Fig 59 Return Air Sampling Tube Location Completing Installation of Return Air Smoke Sen
44. ces 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 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 vss Unused BACnet MS TP Master N2 Slave Unused NOTE DS Dip Switch BACnet MS TP SW3 example shown Baud Rate Selections BAUD RATE 38 400 C10815 Fig 50 RTU Open Address Switches Select Baud Select Baud Modbus JE Comm Option Set to MSTP dk Unused Port master baud OFF ON Protocol Selector DIP Switches C07166 C10816 Fig 51 Network Wiring
45. ctrical 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 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 L1 L2 L3 208 230 3 60 460 3 60 575 3 60 Units Wit
46. cupancy 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 Copyright 2011 Bryant Heating amp Cooling Systems e 7310 W Morris St e Indianapolis IN 46231 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 2 Position Damper C10150 IV Wiring 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 2 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 P
47. e 100 x 227 1 76 This amount of phase 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 39 5814 POTENTIOMETER DEFAULTS SETTINGS POWER EXH M ECONOMIZER FIOP ACCESSORY 1 MINIMUM POS FULLY CLOSED DCV MAX MIDDLE PNK DCV SET MIDDLE m ENTHALPY C SETTING BLK RED RED s NOR E TRI ECONOMIZER 1 Y 0 gt MOTOR POSITION POT 2v Tov za BRN 251 REMOTE POT 135 Ohm i ini At 4 ANY 9 Vocrmpavec BLK m 55 E COM ik 9 moe PL6 R P L6 T 0 i R PL6 R FOR STD OPEN ocv RED BRN vio 1 10007 1 1 ECONOMIZER vax lt Gp P o BL BRN AQ Q 2v 30V 1 6 DAMPER 5 T lo Pfui 5 SY DE D rre i A01 1 GRA 5 GRA NOT USED
48. e no 16 AWG insulated wire 35 C minimum For over 75 ft 23 m use no 14 AWG insulated wire 35 C minimum 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 Central Terminal Thermostat Board Connections X C G w2 Wi w1 Y2 Y2 see Note gelle Note Typical multi function marking Follow manufacturer s configuration instructions to select Y2 Field Wiring C09350 Fig 29 Typical Low Voltage Control Connections 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 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
49. ector and a 4 in electrical bulkhead connector all factory installed in the embossed raised section of the unit basepan in the condenser section LOW VOLTAGE CONDUIT CONNECTOR HIGH VOLTAGE CONDUIT CONNECTOR lt STAINLESS STEEL FITTING Fig 16 Thru Base Connection Fittings 008621 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 1 2 08 amp 09 size Low Gas units only or 3 4 in for all other units NPT street elbow on 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 14 ZU EMBOSSMENT STAINLESS STEEL FITTING SUPPORT BRACKET 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 en
50. ee Fig 54 RED PL6 1 24 V BLK PL6 4 COM CTB ECON 7 RTU Open to J2 6 Outside Air Enthalpy Switch 24 36 Return Air VDC In Enthalpy 4 20 Main Sensor Out C11170 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 20 AWG twisted pair cable to connect the return air enthalpy sensor to the enthal py 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 en thalpy 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 mod
51. 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 34 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
52. 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 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 A minimum clearance is not required around ductwork 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 4 CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage panels must be in place when rigging Unit is not designed for handling by fork truck Before setting the unit onto the curb recheck gasketing on curb POSITION ALL SEAL STRIPS IN PLACE 36 54 914 1371 SEE DETAIL NOTES BEFORE INSTALLING UNIT ON ROOF CURB AS
53. ftop Units 26 2 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 sensor Outdoor air CO sensor Field Connections Field connections for accessory sensors and input devices are made the Open at plugs J1 J2 J4 J5 J11 and J20 field control wiring that connects to the 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 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
54. ge 39 H 191 20 24 E 14 41 41 46 19 19 21 14 9 7 15 81 9 282 325 334 16 50 55 61 24 135 30 161 18 19 22 E 105 116 130 z 2 M O eo e EL 1 o e 5 1 5 ac eo 1 5 2 15 50 50 50 20 20 25 15 20 20 60 60 70 30 30 20 20 25 37 NO or UNPWR C O 22 9 15 5 17 1 19 9 42 6 42 6 47 4 19 7 19 7 21 5 15 7 16 5 17 8 42 8 42 8 47 6 20 101 20 0 123 21 8 17 17 8 18 6 51 0 55 8 60 8 24 8 26 6 29 6 21 1 21 9 24 7 152 189 215 7T 96 109 65 80 195 206 249 97 gt 19 E z 2 N x 5 x 5 x 5 Q 5 Table 5 Unit Wire Fuse or HACR Breaker Sizing Data cont COMBUSTION POWER FAN MOTOR EXHAUST NOM V Ph Hz E E See Legend and Notes for Table 5 on page 39 w PWRD 38 DISC SIZE 3 3 1 1 7 9 8 9 9 4 13 15 18 46 46 52 21 21 23 14 15 16 46 46 52 22 22 24 16 17 18 55 61 66 27 29 32 20 21 24 153 190 216 7 9 6 7 9 196 2 2 9 103 125 7 8 9 7 6 3 8 2 0 5 7 9 3 4 0 5 7 9 3 4 196 2 2 9 1
55. h Disconnect Option Optional L2 KO Disconnect D Switch i 9 Disconnect factory test leads and discard C11109 Fig 24 Power Wiring Connections Field power wires will be connected line side pressure lugs on the power terminal block or at factory installed option non fused disconnect Hield 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 WARNING FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction Do not connect aluminum wire between disconnect switch and 581J unit Use only copper wire See Fig 25 ELECTRIC DISCONNECT No SWITCH COPPER WIRE ONLY Fig 25 Disconnect Switch and Unit A93033 Units with Factory Installed Disconnect The factory installed option disconnect switch is located in a weatherproof enclosure located under the ma
56. in control box The manual switch handle is accessible through an opening in the access panel 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 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 17 5814 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 the female spade connector from the 230 v 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 ter
57. ion 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 Table 1 Operating Weights UNITS LB KG 1 E ow 0 09 10 765 847 925 419 5 925 419 5 1099 499 Economizer Vertical 50 23 Horizontal 80 36 Powered Outlet 32 1 80 36 80 36 80 36 105 48 105 48 105 48 5 Curb 14 in 356 mm 24 in 610 mm 5814 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
58. minals 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 improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate 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 Pwd CO Convenience Transformer Outlet GFCI T Ss Pwd CO AS Fuse Switch Access Panel 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 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 Weatherpr
59. o 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 24 VAC C08463 Fig 46 Open Outdoor CO2 Sensor 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 MENU Config Inputs input 5 identifies normally open status of this input when there is no fire alarm Space Humidity Sensor or Humidistat Perfect Humidity 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 amp 8 to allow the Open board to operate the dehumidification function for the unit Disconnect the J11 Phoenix style c
60. o 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 X gt 9 MINIMUM CLEARANCE FOR PANEL REMOVAL REGULATOR MANUAL GAS SHUTOFF VALVE X BASE UNIT 7 48 MINIMUM 1 DRIP LEG BASE RAIL L PER NFGC S ROOF FIELD FABRICATED 7 CURB SUPPORT FROM GAS LEGEND METER NFGC National Fuel Gas Code Field supplied NOTE Follow all local codes STEEL PIPE SPACING OF SUPPORTS NOMINAL DIAMETER X DIMENSION in ft 1 6 3 4 or 1 8 11 4 or larger 10 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 conn
61. oap 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 injury death and or property damage Connect gas pipe to unit using a backup wrench to avoid damaging gas controls Never purge a gas line into a combustion chamber 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 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 s D BURNER N Fig 21 Orifice Hole A93059 Step 11 Install External Condensate Trap and Line The unit has one 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
62. od 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 us ing 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 NDOOR 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 Hood Parts Plastic Tie Wrap Qty 2 Screws for Metal Tray Qty 2 C08639 Fig 10 Economizer and Two Position Damper Hood Parts Location 12 4 Carefully lift the hood assembly with metal tray
63. oftop 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 gt AO 1 42 c 10 5 at 9 5 9 955 5 5 65 4 20 _ o o zm 5 9 8 3 2 1 0 v 732g gt 099055 585 gt 225 858220 amp amp 5 g 7707 lt Ld Ld SE Donate 4444 AO 2 GND 0 10V only DO 6 H Humidistat DO 7 Spare po s power E J11 J14 Protocol Selector Remove el Input 10 T 55 Accy BACnet oth for 0 9V input 14 T 56 Accy er Mt C10811 Fig 34 RTU Open Multi Protocol Control Board 23 310N 315 QuvOB TVNINN3I 9 15261068187
64. on 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 1 2 electrical bulkhead connector and a 1l 4 in electrical bulkhead connector all factory installed in the embossed raised section of the unit basepan in the condenser section The 1 2 bulkhead connector enables the low voltage control wires to pass through the basepan The 11 4 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
65. onnector 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 Humidity 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 Open configurations must be changed after adding an RH sensor See Fig 47 and 48 for typical RH sensor wiring e J4 1 or J4 4 24vdc loop power J4 2 or J4 5 4 20mA signal input NOTE The factory default for dehumidification control is normally open humidistat MOUNTING HOLES WIRING lo Vin Ond Vo OPENING Vin J4 1 or 4 24Vdc J4 2 or J4 5 20mA output C11087 Fig 47 Space Relative Humidity Sensor Typical Wiring 29 5814 J4 1 4 4 24 VDC
66. oof Cover 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 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 1 2 13 mm under screw heads 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 d sapete C x TAS XE BASE PLATE FOR GFCI RECEPTACLE 09022 Fig 27 Weatherproof Cover Installation Non powered type This type requires the field installation of a general purpose 125 volt 15 A circuit powe
67. quefied 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 1046 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 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 1 2 or 4 in gas inlet port on the unit gas valve Table 2 Natural Gas Supply Line Pressure Ranges wwrwobe wwrsze 4 0 in wg 13 0 in wg 581J 07 08 09 12 996 Pa 8240 Pa 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 t
68. r status setting MENU Config Inputs 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 34 and Figs 35 or 36 for wire terminations at J5 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 X occupancy setting MENU Config Inputs input 3 5 8 or 9 to 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 30 Communication Wiring Protocols General Protocols are the communication languages spoken by contro devi
69. red 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 18 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 SCHEMATIC CONVENIENCE OUTLET RED BLU GRA d d 240V NOTES BLU 1 CONNECT PER RED LOCAL CODE RED 2 FOR 240V SUPPLY CONNECT BLU TO GRA AND RED TO YEL aD X2 54 RED YEL BLU GRA e N SEC
70. rinted in U S A Edition Date 04 11 Catalog No 1581 10 40 Replaces 1581 01 amp 1581 03
71. s Gas 14 Step 11 Install External Condensate Trap and Line 16 Step 12 Make Electrical Connections 17 Field Power 17 Units with Factory Installed Disconnect 17 Units without Factory Installed Disconnect 17 AUS ois scat uere dence a ass 17 Convenience Outlets 18 Factory Option Thru Base Connections Electrical Connections 19 Units without Thru Base Connections 19 Field Control Wiring 19 Thermostat 5a unas e ER rn 19 Unit without Thru Base Connection Kit 20 Heat Anticipator Settings 20 Perfect Humidity Control Connections 21 Perfect Humidity Space RH Controller 21 Open Control System 23 Supply Air Temperature SAT Sensor 26 Outdoor Air Temperature OAT Sensor 26 2 27 Field Connections 27 Space Temperature SPT Sensors 27 Indoor Air Quality CO5 Sensor 28 Outdoor Air Quality Sensor 28 Smoke Detector Fire Shutdown FSD 29 Space Humidity Sensor or Humidistat 29 Connecting Discrete 30 Communication Wiring Protocols 31 General 31 Local
72. sket 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 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 In Lieu of Curb or Slab Mount A non combustible sleeper rail can be used in
73. sor 1 2 Unscrew the two screws holding the Return Air Sensor detector plate See Fig 60 Save the screws Remove the Return Air Sensor and its detector plate Rotate the detector plate so the sensor is facing out wards and the sampling tube connection is on the bot tom See Fig 61 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 61 Connect the flexible tube on the sampling inlet to the sampling tube on the basepan Screws Flexible Exhaust Tubes Sample Tube 08126 Fig 60 Return Air Detector Shipping Position 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 36 Table 5 Unit Wire Fuse or HACR Breaker Sizing Data COMBUSTION FAN MOTOR POWER EXHAUST 50 31 148 50 34 185 25 16 75 25 17 94 30 22 107 15 11 61 20 13 7 20 9 50 50 50 20 9 20 25 15 7 8 9 NOM V Ph Hz E 6 0 191 202 245 5 101 123 7 2 2 5 5 7 2 E 16 41 41 46 19 19 21 12 575 3 60 15 13 208 230 3 60 460 3 60 575 3 60 208 230 3 60 460 3 60 575 3 60 See Legend and Notes for Table 5 on pa
74. t Consult local building codes and appropriate national electrical codes in USA ANSI NFPA70 National Electrical Code NEC in Canada CSA C22 1 for special requirements It is important to recognize safety information This is the safety alert symbol 25 When you see this symbol on the 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 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
75. tering 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 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 l 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 appro priate straps hangers etc Use a minimum of one hanger every 6 ft 1 8 m For pipe sizes larger than 1 5 in follow recommendations of national codes 3 Apply joint compound pipe dope
76. ting 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 present in the space air The sensors are all factory set for a range of 0 to 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 CO2 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 amp 0 10VDC 9516 G 4 20mA NC ALARM COM RELAY NO CONTACTS H G24 VAC Q2 OR 24VDC C08635 Fig 43 Indoor Outdoor Air Quality CO2 Sensor 33ZCSENCO2 Typical Wiring Diagram Wiring the Indoor Air Quality
77. ule 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 Controller 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 supplied by installer Conduit support plate A c CE FF Terminal block cover 45 Controller housing Cover gasket and electronics ordering option Controller cover Conduit couplings supplied by installer Fastener f 2X Trouble Alarm Power Test reset switch 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
78. using two sensors the duct smoke detector does not differentiate which sensor signals an alarm or trouble condition Duct smoke sensor Exhaust tube Exhaust gasket l Sensor housing and electronics See Detail A intake gasket Cover gasket M ordering option ANS TSD CO2 ordering option PE Plug Sampling tube N 2 ordered separately x Coupling Detail A IN S e 97 Magnetic c test reset switch o 0 0 6 Alarm L Power Trouble Dirty Fig 56 Smoke Detector Sensor 08209 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 08245 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

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