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NOT FOR RESIDENTIAL USE

NOTICE

Installer:

Please take the time to read and understand the 

instructions contained inside this manual prior to 

any installation. The installer must give a copy of this 

manual to the unit owner. 

Owner:

Keep this manual in a safe place in order to provide 

service technicians with necessary unit information. 

Packaged 

Rooftop DOAS & 

Recirculation Unit

Installation, Operation, 

& Maintenance Manual

PR**036 PR**048

PR**060 PR**072

PR**084 PR**096

PR**120  

PR**150

PR**180 PR**210

PR**240 PR**300

PR**360 PR**420

PR**480 PR**540

PR**600 PR**720

PR**780 PR**840

PR Series

Summary of Contents for PR 036 Series

Page 1: ...copy of this manual to the unit owner Owner Keep this manual in a safe place in order to provide service technicians with necessary unit information Packaged Rooftop DOAS Recirculation Unit Installat...

Page 2: ...This Page is Intentionally Blank...

Page 3: ...ciple of Operation 30 11 2 Gas Piping and Pressure 30 11 3 Operating and Safety Controls 31 11 4 Wiring 31 11 5 Sequence of Operation 31 SECTION 12 Electric Heater Packages 12 1 Principle of Operation...

Page 4: ...ing Diagram 10 1 Modulation 36 Figure 15 Example Gas Heater Wiring Diagram Dual Furnace 37 Figure 16 Typical Electric Heater Wiring Diagram 40 Figure 17 Typical Electrical Wiring Diagram 42 Figure 18...

Page 5: ...ctrical components Thin sheet metal parts have sharp edges To prevent injury the use of work gloves is recommended This equipment must be applied and operated under the general concepts of reasonable...

Page 6: ...410A Label 4 91070002 Fan Warning Label 5 Quality Inspection Stamp 6 9 21577 Hot Surface Label 7 0527N 0018 Condensate Trap Label 8 0527 0048 Copper Conductors Label 9 S 8238 Additional Parts Label 10...

Page 7: ...nd ANSI Z83 8 Certifiedto CSA 22 2 No 236 and CSA 2 6 Refrigerant Charge R410A Lbs Kg Volts Phase Low High Circuit 1 25 11 36 460 3 psig 250 490 Circuit 2 24 10 91 kPa 1724 3379 Volts Phase LRA Qty 46...

Page 8: ...r order Check the unit for any damage that may have occurred during shipment If any damage is found file a claim with the transporting agency Do not refuse shipment Check the installation location to...

Page 9: ...5 0 Tons 360 30 0 Tons 420 35 0 Tons 480 40 0 Tons 540 45 0 Tons 600 50 0 Tons 660 55 0 Tons 720 60 0 Tons 780 75 0 Tons 840 70 0 Tons 8 Cabinet Size A A Cabinet B B Cabinet C C Cabinet K CL Cabinet G...

Page 10: ...ngle Digital Scroll Single Circuit 17 5 Tons and Below 4 Single Digital Scroll and Single Scroll Dual Circuit 6 Dual Scroll Dual Circuit Lead VFD 17 5 Tons and Above 22 23 Refrigeration Options 00 Non...

Page 11: ...0 480 575V 37 5kW 208V M 60kW 240 480 575V 45kW 208V N 70kW 240 480 575V 52 5kW 208V P 80kW 240 480 575V 60kW 208V R 100kW 240 480 575V 75kW 208V S 110kW 240 480 575V 81 4kW 208V T 120kW 240 480 575V...

Page 12: ...er F ECW 544 2 30 30 Filter G ECW 604 2 30 30 Filter J ECW 606 2 30 30 Filter K ECW 664 2 30 30 Filter L ECW 666 2 30 30 Filter M ECW 706 2 30 30 Filter N ECW 724 2 30 30 Filter P ECW 726 2 30 30 Filt...

Page 13: ...identifies the presence of combustible materials corrosive chemicals or halogenated hydrocarbons anywhere in the premises Halogenated Hydrocarbons are a family of chemical compounds characterized by t...

Page 14: ...ay from objects and other units to allow service access and proper operation of the unit TOP VIEW A C B D Cabinet A B C D A 50 48 41 48 B 56 48 41 48 C 62 48 44 48 D 80 48 56 48 E 104 48 56 60 Minimum...

Page 15: ...Unit shall not be installed with inlet opening facing into the prevailing wind direction in order to help prevent the possibility of moisture entrainment When installed at ground level the unit should...

Page 16: ...ode 5 5 Parking Structures and Repair Garages Installation in garages must be in accordance with the following codes United States Standard for Parking Structures NFPA 88A latest revision or the Code...

Page 17: ...e roof curb is correct size 5 Verify that the moving lifting equipment can handle the unit s weight Verify that forklift forks extend through the unit frame and that crane has required reach 6 1 2 Mo...

Page 18: ...MAY VARY BOTH SIDES FIXED CABLE SEE DETAIL B ADDITIONAL LIFT POINTS WITH EXTENDED CONDENSER USED ONLY TO SUPPORT CONDENSER SECTION ON BOTH SIDES TO PREVENT BENDING AT POINT C DURING LIFTING POINT C H...

Page 19: ...PLATE LOOP CHAIN THROUGH FRAME AND LIFTING PLATE HOOK SHACKLE WITH 1 1 4 PIN MINIMUM BOTH SIDES DETAIL C SEE DETAIL B ADDITIONAL LIFT POINTS WITH EXTENDED CONDENSER USED ONLY TO SUPPORT CONDENSER SECT...

Page 20: ...BLE LENGTH TO LIFT POINTS AS NECESSARY BASED ON UNIT CENTER OF GRAVITY SHACKLE WITH 1 1 4 PIN MINIMUM BOTH SIDES FIXED CABLE FIXED SPREADER BAR FORMED GALVANIZED CABINET FRAME DETAIL C LIFTING POINTS...

Page 21: ...After the curb has been installed the unit may be placed on the curb All PR units are supplied with a closed cell neoprene insulation on the underside of the unit This will seal the top of the curb a...

Page 22: ...uct inside diameter Hydraulic duct diameter for rectangular ducts in inches Dh 2 H W H W Dh hydraulic diameter H rectangular duct inside height W rectangular duct inside width The unit is not designed...

Page 23: ...desired subcooling and superheat at operating temperature extremes 9 2 Components and Configurations There are many different refrigeration circuit variations available Depending on the configuration...

Page 24: ...Page 24 of 84 Figure 7 Circuit Diagram for Standard Compressor with Hot Gas Bypass and No Hot Gas Reheat PRRA Units Only PR Series Installation Operation and Maintenance Manual...

Page 25: ...Page 25 of 84 Figure 8 Circuit Diagram for Standard Compressor with Hot Gas Bypass and Modulating Hot Gas Reheat PR Series Installation Operation and Maintenance Manual...

Page 26: ...Page 26 of 84 Figure 9 Circuit Diagram for Digital Compressor with Modulating Hot Gas Reheat PR Series Installation Operation and Maintenance Manual...

Page 27: ...Page 27 of 84 Figure 10 Circuit Diagram for Standard Compressor with Hot Gas Bypass Modulating Hot Gas Reheat and Subcooling PR Series Installation Operation and Maintenance Manual...

Page 28: ...Page 28 of 84 Figure 11 Circuit Diagram for Digital Compressor with Modulating Hot Gas Reheat and Subcooling PR Series Installation Operation and Maintenance Manual...

Page 29: ...s Enthalpy wheel Active air to air heat exchanger portion of the module It is constructed on corrugated synthetic fiber based media impregnated with a non migrating water selective molecular sieve des...

Page 30: ...ovided by others Gas piping and the manual shut off valve must conform to best building practices and local codes Support piping with hangers and not with the furnace itself Units with multiple furnac...

Page 31: ...re available having a number of different operating functions Refer to Sequence of Operation and Control Diagnostic data sheets provided in the instruction package located in the control section when...

Page 32: ...terminal PSW is not powered Combustion blower is then energized at high speed When the airflow switch closes a 15 second pre purge period begins 3 At end of pre purge period the spark commences and th...

Page 33: ...e SC30 will output 12 to 13VDC to the modulating control valve during the timing duration 90 seconds of timer relay control regardless of the analog input signal to SC30 terminals 7 8 8 When flame is...

Page 34: ...The SC30 will output 12 to 13VDC to the modulating control valve during the timing duration 90 seconds of timer relay control regardless of the analog input signal to SC30 terminals 7 8 8 When flame i...

Page 35: ...15 EGL T1 240V 1 CLASS 2 50 60 HZ 230 VOLT 1 PHASE 60 HERTZ POWER SUPPLY L2 S1 SRTN F L L 240T6T07 Controller WHT BLK BLK BLK L1 N L1 IND IGNITION CONTROL Modulating Furnace Control Panel WIRE ALL SHI...

Page 36: ...OR SPARK IGNITER 5 BLU GRY Series 5 Ignition Control ORG BLK Com BLU GRY MP HI 4 YEL BLU GRY YEL YEL WIRE TO EGB 24VAC Alarm Indicator T5 T6 SC30 SM2AN T15 T14 T3 T4 Maxitrol SC30 SM Mod Valve RED BLK...

Page 37: ...D NO 1 104 TB2 TERMINAL BOARD NO 2 105 VICONICS VICONICS STEP CONTROLLER R850V4 DUAL GAS FURNACE CONTROL 0 10VDC MOD 2 STAGE 24V CONTROL DWN______ CKD______ 11 01 13 WIRING DIAGRAM 0962I 4848 DS LWF Y...

Page 38: ...ring and connections including electrical grounding must comply with United States Refer to National Electric Code NFPA 70 latest revision Canada Refer to Canadian Electric Code CSA C22 1 Part 1 lates...

Page 39: ...00 15 100 240 2300 8000 15 100 300 285 10000 20 150 360 3450 12000 25 150 420 4025 14000 30 150 480 4600 8000 30 150 540 5175 9000 35 150 600 5750 10000 40 150 660 6325 11000 45 150 720 OA 6900 12000...

Page 40: ...4 BR SEE ELECTRIC HEATER DRAWING UO 6 Gnd FROM IOPRO 812U R BK R BK 4 TB1 W W Set pot to 0 5V Set pot to 6V Set pot to 7 5V Set pot to 9 5V Set R2 Pot To 6V Set R2 Pot To 7 5V Set R4 Pot to 9 5V TB1 R...

Page 41: ...13 4 Wiring Connections Power wiring should be connected to the main power terminal block located within the unit main control section Power wiring connections on units with factory mounted disconnec...

Page 42: ...V TRANSFORMER FOR CORRECT WIRING CONNECTIONS ON UNITS RATED 575V CCH2 G 14 L3 T3 L2 T2 L1 T1 L3 L2 L1 T3 T2 T1 CM2 T3 T2 T1 R 14 BK 14 MSP CC2 CC2 CC2 A1 OF1VFD OFM1 G 14 MSP OF1VFD BL 12 BK 12 L3 T3...

Page 43: ...1 A2 A1 CONTINUED ON SHEET 3 1 2 3 4 10 Y 11 12 13 14 9 HP1 R R HPR1 14 13 BL C Y 351 HP2 R R HPR2 14 13 BL C O 345 TB1 HP1 TB1 HP2 Y O C BL TB1 Enable Unloader 1 U1 PR T3 96 VA CLASS 2 50 60HZ 24V TB...

Page 44: ...TB1 TB1 363 TB1 TB1 TB1 TB1 R Enable Outdoor Air Damper Actuator OD PR BL CONTINUED ON SHEET 2 BL Enable 1st Stage Heating Enable 2nd Stage Heating W GY W1 W2 See separate 2 Stage Elec Heater Drawing...

Page 45: ...52 253 254 255 256 257 258 259 260 PDB1 L1 L2 L3 USE USE ELECTRIC HEATER VENDORS RECOMMENDED WIRE SIZE ELECTRIC HEATER LINE VOLTAGE TERMINALS FUSED INTERNALY WIRE ALL SHIELD WIRES TO CLOSEST GND TERMI...

Page 46: ...Comm set up error 4 System error 8 Formatting Blinking Dot Run 8 DO NOT APPLY 24V AC TO UNIVERSAL OUTPUTS External 24VDC relay coil only 24V AC R TB A GND GND 24VDC USE SHIELDED WIRE FOR ALL ANOLOG IN...

Page 47: ...G FIELD WIRING TERMINAL BOARD SYMBOL LEGEND WIRE ALL SHIELD WIRES TO CLOSEST TB A or TB D GND TERMINAL AT THE CONTROL PANEL 4 Power on Xnet Baud Gnd 24VAC I O FLEX EX8160 EXPANDER 0843P 0548 R Gnd 16...

Page 48: ...e FrequencyDrive no 1 and 2 128 HARM Sheet 4 HeatingAnalog Relay Module 129 MDC1 214 Modulating Discharge Line Controller no 1 129 MDC1 MDC2 214 Modulating Discharge Line Controller no 1 and 2 130 MRC...

Page 49: ...Nominal Voltage Selection Pay attention to 1 and 3 at the end of the voltages Over Undervoltage Percentage Selection Trip Time Delay Re Start Time Delay Phase Imbalance Percentage Selection History w...

Page 50: ...600 3 Over Undervolage Percentage Screen Vertical Format 7 8 9 10 11 12 13 14 15 Trip Time Delay Screen Vertical Format 2S 3S 4S 5S 6S 27S 8S 9S 10S Re Start Time Delay Screen Vertical Format Manual 2...

Page 51: ...tem BMS using one of four compatible protocols BACnet LonWorks with the optional Echelon card Modbus N2 The point mapping to these protocols can be pre set so that the protocol and baud rates desired...

Page 52: ...ch and status indication Exhaust Fan Interlock Switch This option provides an interlock between an exhaust fan and the unit Firestat This option de energizes the unit when the stat mounted in the retu...

Page 53: ...e governmental authorities pertaining to the installation service operation and labeling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contract...

Page 54: ...6 Check that all nuts bolts and setscrews are tightened 7 Check that the wheel and drive assembly turns freely without rubbing 8 Check that drives are tightened properly aligned and tensioned 9 Bump t...

Page 55: ...cooling mode Table 6 Hot Water Heating Coil Flow Rate and Pressure Drop Model Cabinet Nominal GPM Water Only Pressure Drop FT H2O Connection Size Sweat in 096 120 B 50 0 4 31 1 5 8 150 210 C 70 0 6 0...

Page 56: ...1 9 6 56 6 14 106 0 213 8 137 2 346 7 41 0 8 0 31 0 10 8 59 5 13 108 0 220 0 141 7 356 5 42 0 10 0 32 8 11 9 62 4 12 110 0 226 4 146 4 366 4 43 0 12 0 34 8 13 1 65 5 11 112 0 232 8 151 1 376 6 44 0 1...

Page 57: ...of the items on the unit pre start checklist are properly installed and operating Upon completion a copy of the form should be returned fieldservice addison hvac com Installation Code and Quarterly I...

Page 58: ...ing is connected to the unit Field installed parts if applicable that shipped lose are installed Notes 1 Start up technician will need to fill out the Start Up Form with date of start up and all infor...

Page 59: ...cian The technician is responsible for assuring that all of the items on the unit start up checklist are properly installed and operating Upon completion a copy of the form should be returned to Addis...

Page 60: ...uring that all of the items on the unit start up checklist are properly installed and operating Upon completion a copy of the form should be returned fieldservice addison hvac com Installation Code an...

Page 61: ...C Outdoor Fan Temp F or C db db wb wb db db wb wb UNIT NAMEPLATE INFORMATION Unit Electrical Volts Supply Voltage L1 L2 Hertz Phase L2 L3 L1 L3 AC supply fans need to run at 50Hz minimum EC supply fan...

Page 62: ...l Number Serial Number Serial Number Serial Number Condenser Fan Motor Make Voltage HP Model Quantity AMPS Energy Conservation Wheel Motor Make Voltage Model HP AMPS Unit Air Filters Type Size EC Whee...

Page 63: ...p Discharge Temp Liquid Temp To Calculate Superheat Convert suction pressure to saturation temperature then subtract the suction line temperature L1 L1 L2 L2 L3 L3 Saturation Temp Saturation Temp To C...

Page 64: ...enser Fan 6 AMPS L1 L1 L2 L2 L3 L3 L1 L1 L2 L2 L3 L3 L1 L1 L2 L2 L3 L3 Hot Gas Bypass Hot Gas Reheat Hot Gas Bypass Hot Gas Reheat Unloading Switch Settings Cut In Cut Out Condenser Air Temperature In...

Page 65: ...ING CHECK Heating Type Heat Stages Qty Modulating Type Electric Heat AMPS Water Source Coil Hot Water Coil Heating Steam Coil Heating Entering Air Temperature EAT Supply Air Temperature SAT Gas Gas Ty...

Page 66: ...ols and equipment Failure to follow these instructions can result in death injury or property damage Prior to any maintenance or service to the unit shut off lockout and tagout the electrical disconne...

Page 67: ...Check for dirt and bent fins Clean by brushing off with broom Compressors Compressors are factory supplied with a charge of oil POE for Copeland and PVE for Bitzer and should not require additional m...

Page 68: ...e required to disconnect electric from equipment Equipment must always be properly grounded SEVERE INJURY HAZARD Do not enter equipment while in operation Equipment may start automatically Do not oper...

Page 69: ...0 x 25 x 2 2 PRRA 120 150 16 x 25 x 2 2 PROA 360 420 48 x 48 16 x 20 x 2 6 PRRA 180 210 240 300 C Cabinet 16 x 16 x 2 3 PROA 480 540 600 660 64 x 65 20 x 25 x 2 6 PRRA 300 D Cabinet 360 420 25 x 25 x...

Page 70: ...structions can result in death electrical shock or injury FIRE HAZARD WARNING EXPLOSION HAZARD CARBON MONOXIDE HAZARD Section 19 Troubleshooting The following tables outline typical unit troubleshooti...

Page 71: ...Obstruction in intake Check dampers for proper operation Clear all intake passages of obstructions Fan wheel loose on shaft Reposition and tighten Access doors and panels not closed Close Excessive d...

Page 72: ...ion in liquid line Check head pressure check and adjust TXV if not functioning properly check pressure drop across filter drier Defective low pressure switch Check calibration of switch Compressor Sta...

Page 73: ...ssor and fan motor Improper refrigerant charge Check subcooling Bearings or pistons too tight Check for low oil level Allow time for compressor to cool Check dome temperature of compressor Noisy Compr...

Page 74: ...ambient head pressure control Suction Pressure Too Low Refrigerant undercharge Check pressures and subcooling Blower running backwards Interchange any two wires connected to motor Defective or improp...

Page 75: ...uction and liquid line Check for restrictions in refrigerant circuit Control contacts stuck Check thermostat shorts in wiring slave relay compressor contactor Supply Air Temperature Too High Refrigera...

Page 76: ...diagrams Dirty or blocked condenser coil Clean condenser coil Fan Motor Is Cycling On Thermal Overload Dirty or blocked condenser coil Clean condenser coil Wrong motor for fan speed control applicatio...

Page 77: ...out Replace coil Wrong type of distributor for hot gas bypass to the evaporator Install proper venture flo type distributor for low pressure drop Regulator Fails To Close Dirt under seat of regulator...

Page 78: ...engagement with sheaves Improper motor operation Check drive motor and drive motor wiring for proper voltage Improper VFD operation Check VFD programming Improper VFD sensor operation Check VFD input...

Page 79: ...control by removing 24V power to ignition control terminal 24VAC Dirty burners Clean burners to ensure proper flame carryover Faulty spark igniter Check if connecting lead or spark igniter are damage...

Page 80: ...ents replace as necessary Heat anticipator current draw too low causing short cycling Check current draw Heater Cycling on Automatic Limit Improper airflow Check for obstructions to return air loose o...

Page 81: ...half of Buyer xi failure of parts components services or hook ups not supplied by Seller xii incompatibility with items not supplied by Seller xiii a deliverable not properly installed by a qualified...

Page 82: ...gence strict liability breach of warranty or otherwise is limited to Seller at its discretion replacing or repairing the defective deliverable providing replacement parts or issuing Buyer a credit equ...

Page 83: ...vision Guide Date Page Description By 19 Jun 20 All Combined all previous IOMs into new format DS 19 Jun 20 All Multiple updates additions and clarifications DS PR Series Installation Operation and Ma...

Page 84: ...ons For Safer Healthier and More Productive Indoor Environments 7050 Overland Road Orlando FL 32810 Tel 407 292 4400 Fax 407 290 1329 www addison hvac com DEDICATED OUTDOORAIR SPECIALISTS Part Number...

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