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ADDISON® PR-Series Packaged Rooftop Unit Installation

1. High Pressure Switch Low Pressure Switch Pumpdwn Low Pressure Failure Control Cyl Unloading Switch Cut In Cut Out CONDENSER FAN AND FAN MOTOR CHECKS IF APPLICABLE Fan Mfg Set screws tight Fan spins freely Fan Serial No Motor Mfg HP Motor Serial No FLA 1 Voltage Amperage If app low ambient cut in Cut out 2 Voltage Amperage If app low ambient cut in Cut out 3 Voltage Amperage If app low ambient cut in Cut out 4 Voltage Amperage If app low ambient cut in Cut out Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacement parts sold and supplied by Addison Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through ADDISON representatives Please contact us
2. Reheat Solenoid N Accumulator TX Valve Sightglass Hot Gas Bypass Valve 18 of 67 SECTION 9 REFRIGERATION CIRCUITS FIGURE 11 Circuit Diagram for Digital Compressor Modulating Hot Gas Reheat and Sub Cooling Airsource Units Modulating Bypass Valve ri Modulating Condenser Coil Digital Compressor Reheat Valve Evaporator Coil 4L Reheat Check Valve Subcool Coil Reheat Coil Filter au Reheat Solenoid Accumulator Watersource Units Restrictor Check Valve TX Valve Sightglass ontroller Subcooling mL Solenoid me NO Drier Water Out Water Regulating Valve Q Modulating SU Bypass Valve C3 Digital Compressor AS o re Modulating Reheat Valve Evaporator Coil Reheat Check Valve Pti m Solenoid N C Subcool Coil Reheat Coil Strainer 20 Water In Coaxial Condenser Coil Subcooling Subcooling p Solenoid NO Filter Drier Kk Reheat Solenoid Restrictor Accumulator g poros Check Valve o oe s 2 9 TX Valve Sightglass 19 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 10 ENERGY CONSERVATION A DANGER WHEELS Severe Injury Hazard Do not enter equipment while in operation Equipment may start automatically Do not operate with door open Installation oper
3. 55 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 5 Variable Speed Head Pressure Control PROBLEM POSSIBLE CAUSE SOLUTION Erratic pressure control Defective regulator Replace defective part Dirt causing regulator to bind Disassemble regulator and clean internal parts Install strainer Power source to hot gas solenoid or operation of the solenoid is intermittent Determine if problem is caused by supply voltage solenoid or exces sive MOPD Make changes neces sary to correct problem Regulator leakage Dirt in regulator causing seat to remain open Clean regulator Install strainer Worn or eroded seating surface on regulator Replace defective part Regulator hunting chat tering with large fluctua tions in controlled pressures Regulator is oversized Contact Addison for correctly sized regulator Regulator and liquid injection thermovalve have control interaction Increase superheat setting Dampen bulb reponse by reposition ing Regulator and cylinder unloaders have control interaction Increase differential between the controls by lowering the regulator s setpoint Regulator will not provide pressure control Regulator seat is restricted Pressure adjusting stem is set at a point so high that suction pressure never reaches the setpoint Locate and remove stoppage Install strainer Re adjust the regulator
4. Strainer clogged at the regulator inlet MOPD exceeded across the solenoid or loss of source voltage Locate and remove stoppage Replace solenoid or troubleshoot the electrical problem Solenoid coil burned out Wrong type of distributor for hot gas bypass to the evaporator Replace coil Install proper venture flo type dis tributor for low pressure drop Regulator fails to close 56 of 67 Dirt under seat of regulator Locate and remove stoppage Install strainer or filter drier Diaphragm failure leakage around the adjusting stem Replace defective parts Pressure adjusting stem is set at a point so high that suction never reaches the setpoint Blocked external equalizer passage Re adjust the regulator Locate and remove stoppage Install strainer Worn or eroded regulator seat Replace defective part 18 6 Energy Conservation Wheel SECTION 18 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Inadequate wheel perfor mance Incorrect wheel rotation speed Check wheel rotation speed Worn wheel media or worn out of place seals Check wheel integrity and seals Adjust and or replace seals Unanticipated entering air conditions Check entering air conditions and compare to design Dirty media Check media for dirt and clean Improper wheel rotation Misaligned belts Check drive belts for engagement with
5. Ignition control miscommunication Reset ignition control by removing 24V power to ignition control termi nal 24VAC Dirty burners Clean burners to ensure proper flame carryover Faulty spark igniter Check if connecting lead or spark igniter are damaged If yes replace Faulty flame sensor Check if connecting lead or flame probe are damaged and or touch ing earthed components If yes replace Incorrect gas pressure at gas valve Check gas pressure at inlet of valve is correct for gas type If no correct pressure problem Faulty gas valve Check gas pressure at outlet of the valve rises when valve turns on and returns to zero or lower when valve turns off If no replace 58 of 67 18 8 Electric Heater SECTION 18 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION No Heat No call for heat Check that the controls are set to call for heating No power and control voltage to heater Check that heater has power and control voltage Faulty component Check components with continuity meter Replace as necessary Not Enough Heat Faulty component Check ampere draw is reasonably close to that on the heater data plate If more than 10 short begin testing individual components Replace as necessary Heat anticipator current draw too low causing short cycling Check current draw Heater Cycling on Auto matic Limit
6. Open Secondary Protec tive Device Improper airflow Check for obstructions to return air loose or broken fan belt and clogged filters and or evaporator coils Faulty temperature limit switch Stuck contactor Test and if necessary replace Check contactor Contactor Chatter Improper wiring Insufficient transformer capacity Check wiring Check transformer Element Failure Corroded hardware and or loose connections Check hardware 59 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 9 ADDISON PR Series Start Up Procedures ADDISON START UP FORM Orlando Florida 32810 USA PR SERIES UNITS Tel 407 292 4400 Fax 407 290 1329 www addison hvac com Page 1 of 6 Field start up should be performed by a qualified technician The technician is responsible for assuring that all of the items on this checklist are properly installed and operating Upon completion a copy of this form should be returned to Addison using the contact information listed in the header DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technicia
7. Evaporator Coil orn Compressor Reheat Coil Reheat Solenoid Reheat Check Valve Water In Filter Drier Strainer gt lt Restrictor Accumulator Bypass Valve TX Valve Sightglass Coaxial Condenser Coil 15 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 8 Circuit Diagram for Digital Compressor and Modulating Hot Gas Reheat Airsource Units Varispeed Controller Condenser Fan Modulating Bypass Valve x Modulating Reheat Valve Reheat Check Valve Condensor Coil Evaporator Coil Reheat Coil Filter Drier Reheat Solenoid Strainer KRestrictor Digital Compressor TX Valve Sightglass Accumulator Watersource Units Water Out ED Water Regulating Valve ea iu Modulating Bypass Valve P Modulating R eheat Valve Coaxial Condenser Coil Reheat Check Valve Evaporator Coil Reheat Coil Digital rie Drier Compressor Strainer gt lt Restrictor Reheat Solenoid a TX gightglass Accumulator 16 of 67 SECTION 9 REFRIGERATION CIRCUITS FIGURE 9 Circuit Diagram for Standard Compressor Hot Gas Bypass Standard Hot Gas Reheat and Sub Cooling Airsource Units Varispeed Controller Condenser Fan 2 wc gt LE F o Subcoolin Solenoid N C Condenser Coil Subcooli
8. 60 8 3 Discharge Ductwork 11 SECTION 19 The ADDISON PR Series Warranty 67 SECTION 9 Refrigeration Circuits 12 9 T RSTNQBTANT eite ete encre ce deectees 12 9 2 Components and Configurations 12 SECTION 10 Energy Conservation Wheels 20 10 1 Principal of 20 SECTION 11 Gas Furnaces esee 21 11 1 Principle of Operation 22 11 2 Gas Piping and 22 11 3 Operating and Safety Controls 22 TA WINN Eat eA 23 11 5 Sequence of 28 SECTION 12 Electric Heaters eene 32 12 1 Principle of 33 12 2 Operating and Safety Controls 33 RV IID0 SECTION 13 Electrical 13 1 Wiring and Electrical Connections 34 13 2 34 13 3 Current Draw 34 13 4 Wiring Connections 34 2014 Addison All rights reserved No part of this work covered by the copyrights herein may be reproduced or copied in
9. Addison cannot be responsible for ensuring that all appropriate safety measures are undertaken prior to installation this is entirely the responsibility of the installer It is essential that the contractor the sub contractor or the owner 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 the presence of halogen elements fluorine chlorine bromine etc These compounds are frequently used in refrigerants cleaning agents solvents etc If these compounds enter the air supply of the burner the life span of the unit components will be greatly reduced An outside air supply must be provided to the burners whenever the presence of these compounds is suspected Warranty will be invalid if the unit is exposed to halogenated hydrocarbons 2 2 Required Equipment and Materials When lifting of the unit is required the installing contractor is responsible for supplying or arranging for the appropriate lifting equipment so that the unit may be placed in a safe manner The qualified installing service technician is responsible for having the appropriate equipment and materials for the safe installation and start up of an unit Tools and materials required to commission the unit include but are not limited to the following Various screwdriver types and sizes Various wrench type
10. All electric wiring 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 latest revision Check rating plate on unit for supply voltage and current requirements If any of the original control wire supplied with the electric heater must be replaced replace it with type THHN 221 F 105 C 600 V 16 gauge wire or equivalent See Page 33 Figure 16 for sample wiring diagram AIR PRESSURE SWITCH AUTOMATIC Los IVI vw AANNO WAG LLL ELEMENTS t rt HEAT RELAYS 7 TERMINAL BLOCK MAIN fi Aa TERMINAL a cv A 3ROUNDS BLOCK Le v I 11213 3 PHASE SUPPLY 33 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 13 ELECTRICAL A DANGER Electrical Shock Hazard Disconnect electric before service More than one disconnect switch may be required to disconnect electric from equipment Equipment must be properly grounded Failure to follow these instructions can result in death or electrical shock Each unit is equipped with a wiring diagram permanently attached behind clear view plastic on the inside of the control compartment door or on laminated sheets in an inside compartment which will vary d
11. 4 7 Evacuation ete tte Riego 5 4 8 Altitude Elev e essen 5 PARTIE 5 Caract ristiques techniques 6 PARTIE 6 Levage de l appareil emball pour la rd ias ek es 7 6 1 Mouvement levage de l appareil emball pour climatisation 7 PARTIE 7 Structure pour le montage de l appareil au toit 9 7 1 Assembl et installation de la structure 9 7 2 Montage de l appareil la structure 10 PARTIE 8 Observations pour la conduite 11 8 1 Conduite de l air 11 8 2 Conduite de l air 11 8 3 Conduite de l air d alimentation 11 PARTIE 9 Circuits de r frig ration 12 9 1 R frig rant eesessesseseeeeeeenneennnrns 12 9 2 Composants et configurations 12 PARTIE 10 Roue pour le recuperation d nergie 20 10 1 Principe de PARTIE 11 Aerothermes de 11 1 Principe de fonctionnement 11 2 Conduites et pressions de gaz 11 3 Contr les de fonctionnemen
12. applicable specifications and codes Addison recommends the installer contact a local building inspector for guidance To use the information given in a layout drawing and in the manual together with the cited codes and regulations to perform the installation To furnish all needed materials not furnished as standard equipment To plan location of supports To provide access to unit for servicing To provide the owner with a copy of this Installation Operation and Service Manual To ensure there is adequate air circulation around the unit and to supply air for combustion ventilation and distribution in accordance with local codes To assemble or install any accessories or associated duct work using best building practices To properly size supports and hanging materials To verify that the unit is delivering design airflow by having an air balancing test performed To have refrigerant technician certification per Section 608 of the US Environmental Protection Agency EPA Clean Air Act of 1990 or equivalent certification program To have all required equipment to work on direct expansion and or chilled water air conditioning system SECTION 2 INSTALLER RESPONSIBILITY 2 1 Corrosive Chemicals A CAUTION Product Damage Hazard Do not use equipment in area containing corrosive chemicals Refer to appropriate Material Safety Data Sheets MSDS Failure to follow these instructions can result in product damage
13. qualified in the installation and service of gas fired heating equipment using only components that are sold and supplied by Addison Combustion Airflow Switch An airflow switch is provided as part of the control system to verify airflow through induced draft fan by monitoring the difference in pressure between the fan and the atmosphere If sufficient negative pressure is not present indicating lack of proper air movement through heat exchanger the switch opens shutting off gas supply though the ignition control module The air pressure switch has fixed settings and is not adjustable Rollout Switch Manual Reset The furnace is equipped with manual reset rollout switch es in the event of burner flame rollout The switch will open on temperature rise and shut off gas supply through the ignition control module Flame rollout can be caused by insufficient airflow for the burner firing rate high gas pressure blockage of the vent system or in the heat exchanger The furnace should not be placed back in operation until the cause of rollout condition is identified The rollout switch can be reset by pressing the button on the top of the switch Primary High Limit Switch To prevent operation of the furnace under low airflow conditions the unit is equipped with a fixed temperature high limit switch mounted on the vestibule panel This switch will shut off gas to the furnace through the ignition control module before the air temperature
14. reaches 250 F 121 1 C Reduced airflow may be caused by restrictions upstream or downstream of the circulating air blower such as dirty or blocked filters or restriction of the air inlet or outlet to the unit The high limit switch will shut off the gas when the temperature reaches its set point and then reset when the temperature drops 30 F 16 7 C below the set point initiating a furnace ignition The furnace will continue to cycle on limit until the cause of the reduced air flow is corrected Ignition Control Module Ignition control modules are available having a number of different operating functions Refer to Sequence of Operation and Control Diagnostic data sheets provided in the instruction package for a detailed description of the control features operation and troubleshooting for the model control installed 11 4 Wiring All electric wiring 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 latest revision Check rating plate on unit for supply voltage and current requirements If any of the original control wire supplied with the gas furnace must be replaced replace it with type THHN 221 F 105 C 600 V 16 gauge wire or equivalent See Page 24 Figure 12 through Page 27 Figure 15 for sample wiring diagrams for FM compliant furnaces Consult factor
15. 240T6T07 Controller Maxitrol 71 customer PROVIDED COMPONENT EXTERNAL TERMINAL CONNECTION CUSTOMER FIELD WIRING TR TERMINAL CONNECTION INTERNAL TERMINAL CONNECTION 2 2 ROLLOUT SWITCH ON HORIZONTAL BURNER TRAY ONLY 27 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 11 5 Sequence of Operation 11 5 1 Sequence of Operation for Two Stage Fur nace with 75 200 MBH 21 9 58 6kW Input When system is powered up 24 VAC will be applied to the ignition control terminals 24VAC R and to the timer relay control The ignition control will reset perform a self check routine flash the diagnostic LED for up to four seconds and enter the thermostat scan standby state The amber light on the timer relay control will be lit indicating it is in the ready position Call for Heat 1 Controller provides contact closure 1st and 2nd stage on call for heat 2 24 VAC is supplied to ignition control terminal TH provided limit switch is in closed position 3 The control will check that pressure switch con tacts are open ignition control terminal PSW is not powered 4 Combustion blower is then energized at high speed 5 When the airflow switch closes a 15 second pre purge period begins 6 Atend of pre purge period the spark com mences and the 1st stage gas valve is ener gized for the trial for ignition period If the burners fail to light or carryover during a trial for ignition the
16. 5 16 18 11 fteLb 17 fteLb 3 8 16 19 fteLb 30 fteLb Bolt Head Grade Marking 8 8 8 8 Nut Grade Marking Bolt Size Grade 8 8 Grade 10 9 M5 6Nm 9Nm M6 10Nm 15Nm M8 25Nm 35Nm M10 50Nm 75Nm M12 85Nm 130Nm M16 215Nm 315Nm SECTION 4 NATIONAL STANDARDS AND APPLICABLE CODES SECTION 4 NATIONAL STANDARDS AND APPLICABLE CODES 4 5 Parking Structures and Repair Garages 4 1 Refrigerant Handling Practices The handling reclaiming recovering and recycling of refrigerants as well as the equipment to be used and the procedures to be followed must comply with the national and local codes United States Refer to Federal Clean Air Act latest revision Canada Refer to Canadian Environmental Protection Act latest revision Installation in garages must be in accordance with the following codes United States Standard for Parking Structures NFPA 88A latest revision or the Code for Motor Fuel Dispensing Facilities and Repair Garages NFPA 30A latest revision Canada Refer to CSA B149 1 latest revision Natural Gas and Propane Installation Code 4 2 Fuel Codes 4 6 Electrical The type of fuel appearing on the nameplate must be the type of fuel used Installation must comply with national and local codes and requirements of the local fuel company United States Refer to NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code Canad
17. 7 Dampers Dampers Check and clean blades Damper Motor Linkages Verify that all damper linkages move freely Lubricate if necessary 16 8 Energy Conservation Wheel Bearings Small ECWs smaller than ECW666 are provided with no maintenance inboard bearings These bearings should require no maintenance during the life of the unit Larger ECWs come equipped with an external flanged bearing which should be greased annually Use a petroleum based lubricant Drive Motor The drive motors should require no maintenance Replace as necessary Drive Belts Belts are multilink belts with individual links constructed of a high perfor mance polyurethane elastomer reinforced with multiple plies of polyester fab ric This belt provides a strong yet flexible belting The multilink feature provides quick easy servicing or replacement Adjust and or replace as nec essary Seals 44 of 67 Adjust and or replace as necessary The seals are made to clip on the cas sette or post metal easily SECTION 16 MAINTENANCE Wheel The wheel is somewhat self cleaning through its normal action of rotating in and out of countercurrent air flow streams In the event that routine quarterly inspection indicates that there is dirt or dust buildup within the wheel causing an excessive pressure drop then wheel cleaning should be performed as follows 1 Using a standard shop vacuum vacuum any debris from both faces of the
18. Aucune partie de ce document couvert par le copyright ne peut tre copi e ou reproduite de quelque mani re que ce soit graphique lectronique ou m canique y compris photocopie enregistrement sur bande magn tique ou stockage et extraction dans des syst mes informatis s sans l autorisation crite pr alable de Addison Printed in U S A TABLE OF FIGURES Figure 1 Label Placement 2 Figure 2 Lifting a Small Unit 8 Figure 3 Lifting a Large Unit 8 Figure 4 Curb Mounting seen 10 Figure 5 Circuit Diagram for Standard Compressor and Hot Gas Bypass No Hot Gas Reheat 13 Figure 6 Circuit Diagram for Standard Compressor Hot Gas Bypass and Standard Hot Gas Reheat 14 Figure 7 Circuit Diagram for Standard Compressor Hot Gas Bypass and Modulating Hot Gas Reheat 15 Figure 8 Circuit Diagram for Digital Compressor and Modulating Hot Gas 16 Figure 9 Circuit Diagram for Standard Compressor Hot Gas Bypass Standard Hot Gas Reheat and 17 Figure 10 Circuit Diagram for Standard Compressor Hot Gas Bypass Modulating Hot Gas Reheat and 18 Figure 11 Circuit Diagram for Digital Compressor Modulating Hot Gas Reheat and Sub Cooling 19 Figure 12 Wiring
19. Controls Options 37 SECTION 2 Installer Responsibility SECTION 15 Start up 38 2 1 Corrosive Chemicals 3 15 1 Pre Start Checks sss 39 2 2 Required Equipment and 3 SECTION 16 Maintenance 41 SECTION 3 Critical Considerations 4 16 1 General 42 3 1 Required 4 16 2 Unit EXEO o ieioea naniii aiaia 42 3 2 Placement 4 16 3 Direct Drive Supply and Exhaust Fans 43 3 8 Hardware iustitie iii 4 16 4 Condensing Fans 43 SECTION 4 National Standards and Applicable Codes 5 16 5 Refrigeration Circuit Components 43 4 1 Refrigerant Handling Practices 5 16 6 Condensate Drain Pan and Drain 44 4 2 Fuel Codes nen 5 16 7 Dampers btt er tira 44 4 3 Installation Codes seee 5 16 8 Energy Conservation 44 4 4 Aircraft Hangars ii 5 16 9 Gas FU tn ce sienne nn ailes 45 4 5 Parking Structures and Repair Garages 5 16 10 El
20. Diagram for FM Compliant Two Stage Furnace with 75 200 MBH 21 9 58 6kW Input 24 Figure 13 Wiring Diagram for FM Compliant Two Stage Furnace with 250 400 MBH 73 3 1172 kW Input i aed 25 Figure 14 Wiring Diagram for FM Compliant 20 100 Modulating Furnace with 75 200 MBH 21 9 58 6KW Input 26 Figure 15 Wiring Diagram for FM Compliant 20 100 Modulating Furnace with 250 400 MBH 73 3 117 2 kW 1 2 2 27 Figure 16 Wiring Diagram 33 Figure 17 Unit Configuration 35 Figure 18 PST rap ine gp Aledo aues 39 LIST OF TABLES Table 1 Recommended Torque Settings 4 Table 2 Manifold Size and Minimum Pressures 22 Table 3 Gas Furnace Inlet and Manifold Pressures 40 Table 4 Motor Lubrication 43 There are references in this manual to various trademarks All trademarks mentioned herein whether registered or not are the property of their respective owners Addison is not sponsored by or affiliated with any of the trademark or registered trademark owners and makes no representations about them their owners their products or services SECTION 1 PACKAGED ROOFTOP UNIT SAFETY Your Safety is Important to Us This symbol is used throughout the manual to notify you of possi
21. Necessary Based Spreader Bar On Unit Center Of Gravity Rolling Block 20 6 1m Cable Through Rolling Block Shackle With Minimum 1 25 3 2cm Pin Hook To Rail NOTE Airsource packaged unit is illustrated Lifting procedures for watersource packaged units and air handlers are similar 8 of 67 SECTION 7 ROOF CURB A WARNING Crush Hazard Falling Hazard Use proper lifting Use proper safety equipment and equipment and prac practices tices to avoid falling Severe Injury Hazard Use proper lifting practices and equip ment Equipment and accessories are heavy SECTION 7 CURB Cut Pinch Hazard Wear protective gear during installation operation and service Edges are sharp Failure to follow these instructions can result in death injury or property damage Roof curbs are available for unit that are to be installed on a typical flat roof ie bonded or corrugated with no seismic restraint requirements If seismic restraint is required contact factory Curb dimension and weight information is available in the PR Series Dimension and Selection Guides that can be downloaded from the ADDISON website at www addison hvac com Note Before installation verify that you have the correct roof curb and that all required components are present If any are missing contact your ADDISON independent representative 7 1 Roof Curb Assembly and Installation Place the curb on the roof
22. Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacement parts sold and supplied by Addison Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through ADDISON representatives Please contact us for any further information you may require including the Installation Operation and Service Manual This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment 61 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL ADDISON 7050 Overland Road Orlando Florida 32810 USA Tel 407 292 4400 Fax 407 290 1329 www addison hvac com COMPRESSOR CHECKS START UP FORM PR SERIES UNITS Page 3 of 6 Manufacturer 1 Model No 2 Model No 3 Model No 4 Model No 1 F
23. Rigid Insulation Field Supplied Field Supplied Roof Deck and Roofing Field Supplied Typical 10 of 67 SECTION 8 DUCT CONSIDERATIONS The unit has been designed to operate at the specific air volume and external static pressure that was ordered This static pressure is generated by any additional components that are added to the unit i e ductwork etc Additional static pressure beyond that ordered will affect the performance of the packaged air conditioning unit and lessen the air volume that can be delivered Proper engineering methods need to be employed when calculating duct and component static pressure i e 2009 ASHRAE Handbook Fundamentals Chapter 21 The system ductwork must comply with Sheet Metal and Air Conditioning Contractors National Association SMACNA or any other recognized standards It is recommended that flexible duct connections be incorporated into the ductwork design to prevent the transmission of any vibrations either mechanical or harmonic As a general rule all ducts should have a straight run of at least 3 hydraulic duct diameters immediately before and after the unit before adding any fittings elbows restrictions etc Hydraulic duct diameter for round ducts in inches Dhzd Dh hydraulic diameter d round duct 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 rectangul
24. any form or by any means graphic electronic or mechanical including photocopying recording taping or information storage and retrieval systems without the written permission of Addison Printed in U S A TABLE DES MATIERES PARTIE 1 S curit de l appareil emball pour la climatisation ss 1 1 1 Description de 1 1 2 Inspection et installation 1 1 3 Etiquettes de s curit et leur placement 1 1 4 Proposition 65 de l tat de California 2 PARTIE 2 Responsabilit de l installateur 3 2 1 Produits chimiques 3 2 2 Equipments et mat riels obligatoires 3 PARTIE 3 Observations importantes 4 3 1 Espacements 4 3 2 Observations de 4 3 3 Consid rations pour les boulons and les vis 4 PARTIE 4 Normes nationales et codes applicables 5 4 1 Practiques d utilisation pour le r frig rant 5 4 2 Codes du gaz 5 4 3 Codes d installation 5 4 4 Hangars pour avions 5 4 5 Garages publics 5 4 6 Electricit 5
25. equipped to handle a maximum gas supply pressure of 13 5 w c 33 5 mbar When gas supply exceeds this maximum gas pressure an additional high gas pressure gas regulator will be required by others to insure that the correct gas pressure is supplied to the combination gas valve For minimum inlet gas pressure refer to Page 22 Table 2 Table 2 Manifold Size and Minimum Pressures Minimum Inlet Minimum Inlet Minimum Heat Gas NPT Input Connection Gas Pressure Gas Pressure NG LPG Btu h kW in in w c mbar in w c mbar lt 400 000 117 2 0 75 5 0 12 5 11 0 27 4 gt 400 000 117 2 1 00 6 0 14 9 12 0 29 9 The gas train is piped through an outside wall when requested If through the curb gas connection is required the connection is made as necessary in the furnace vestibule compartment A manual shut off valve must be provided 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 Two 1 8 NPT pressure test ports for measuring manifold inlet pressure are located on the gas valve 22 of 67 11 3 Operating and Safety Controls Safety systems are required for proper performance of the gas furnace The gas furnace shall not be permitted to operate with any safety system disabled If a fault is found in any of the safety systems then the system shall be repaired only by a contractor
26. for any further information you may require including the Installation Operation and Service Manual This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment 63 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL ADDISON START UP FORM Orlando Florida 32810 USA PR SERIES UNITS Tel 407 292 4400 Fax 407 290 1329 www addison hvac com Page 5 of 6 HEATING CHECKS IF APPLICABLE Type Coaxial Coil NG LPG Electric Hot Water Steam If Coax Coil WPD Water Temp In Water Temp Out Control Valve Make and Model Burner Modulation Control If NG LPG Manifold Pressure Ignition Type Unit safeties operate properly If Electric Amperage L1 L2 L3 HOT GAS BYPASS CHECKS IF APPLICABLE Hot gas bypass installed Yes No Ifyes of Stages Setpoints 1 2 3 4 HOT GAS REHEAT CHECKS IF APPLICABLE Hot gas reheat installed Yes No Safeties operate properly Ifyes of Stages mM Setpoints 1 mM 2 i F Fans run and cycle properly ENERGY CONSERVATION WHEEL AND WHEEL MOTOR CHECKS IF APPLICABLE Wheel Make Catalog No Wheel Mtr Catalog No Exhaust Air Temperature Before the Wheel m abf wb After the Wheel p wb Entering Air Temperature Before the Wheel d wb After the Wheel mM abf wb Pressure Drop A
27. in death electrical shock or injury A WARNING Explosion Hazard Fire Hazard Burn Hazard Cut Pinch Hazard Turn off gas supply Keep all Allow equipment to Wear protective to equipment flammable cool before service gear during before service objects liquids installation and vapors the Internal operation and minimum required components of service clearances to equipment may still combustibles be hot after opera Edges are sharp away from tion equipment Some objects will catch fire or explode when placed close to equipment Failure to follow these instructions can result in death injury or property damage 21 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 11 1 Principle of Operation The gas furnace is an 80 efficient self contained duct furnace that can burn natural gas or LPG It is comprised of Manifold Includes combination gas valve incorporating redundant safety shut off valve manual shut off and gas regulator Burners Inshot gas burners with direct spark ignition and remote flame sensor to ensure carryover across all burners Heat exchanger Serpentine heat exchanger constructed of 409 stainless steel 11 2 Gas Piping and Pressure All gas piping to the unit must comply with United States Refer to NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code Canada Refer to CSA B149 1 latest revision Natural Gas and Propane Installation Code The gas furnace is
28. in the position in which it will be installed Check that the diagonal measurements are within 1 16 1 6 mm of each other To ensure a weatherproof seal between the unit and the curb the curb must be level with no twist from end to end Shim level as required and secure curb to roof deck using best building practices Inspect curb to ensure that none of the field piping routed through the curb protrude above the curb Install roofing material as required NOTE Check the installation location to ensure proper clearances to combustibles and clearance for access See Page 4 Section 3 9 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 7 2 Unit Mounting to Roof Curb the curb per all applicable codes See Page 10 After the curb has been installed the unit may be Figure 4 for details placed on the curb There must be a 3 8 0 95 cm x 2 5 1 cm closed cell neoprene insulation supplied by others between the top of the curb and the base surface of the unit to prevent moisture from leaking into the building ie from driving rains or melting snow The installer is responsible for attaching the unit to FIGURE 4 Curb Mounting 3 8 0 95cm x 2 5 1 cm Closed Cell Neoprene Insulation Field Supplied Bottom Pan Butyl Caulk Seal Field Supplied 2 x4 bcm x 10cm Treated Wood Nailer With Curb oe 12 Gauge Channel 6 16 5cm 14 35 6cm 1 2 1 3 cm Nom Counter Flashing amp Cant Strip
29. pressure with the saturated pressure If the presence of air or non condens ables is suspected the refrigerant must be reclaimed through a service port The system must then be re evacuated to 250 500 microns and recharged The filter drier should also be replaced be charging Defective high pressure switch Replace switch Restriction in discharge or liquid line Check discharge and liquid line pressures check TXV 50 of 67 SECTION 18 TROUBLESHOOTING Compressor Cuts Out On Thermal Overload Low voltage Check incoming voltage leg to leg All three legs must be within 10 of the required voltage and the leg to three leg average voltage variation must be less than 2 on each leg Sustained high discharge pressure Check running amperage and con ditions described under high dis charge pressure High suction and discharge pressures Check TXV setting check for air in system Defective compressor overload Allow compressor to cool for two hours if compressor is hot Recheck for open circuit Defective run capacitor Check run capacitor for compressor 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 com pressor Noisy Compressor Scroll compressors are rotation sensitive Reverse wiring at disc
30. 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 sensor tempera ture relative humidity for malfunc tioning High pressure drop Noise Unanticipated airflow Dirty filters Check airflow and compare to design Check filters and clean replace Dirty media Out of place seals Check media for dirt and clean Check seals and adjust Worn bearings Misaligned belts Check bearings Check belts for slippage 57 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 7 Gas Furnace LED flashes on for 1 4 second and off for 1 4 second during fault condition Pause between fault codes is 3 seconds LED CODE POSSIBLE CAUSE SOLUTION Steady On No Operation Internal control fault One Flash Combustion Airflow Fault Faulty combustion blower Check for 230V supply and tight ness at fan connections If no power replace Airflow switch not closing Airflow switch opened during operation Check for 230V supply and tight ness at fan connections If no power replace Two Flash Flame with No Call for Heat Faulty gas valve Check voltage to gas valve with thermostat off Valve should not be powered If there is gas flow replace valve Three Flash Ignition Lockout
31. the unit so roof runoff water does not pour directly on the unit Provide gutter or other shielding at roof level Where snowfall is anticipated mount the unit so all intakes and discharges are above the maximum snow depth for the area 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 be mounted on a level concrete slab which should extend at least 2 5 1 cm beyond the unit on all sides The top of the slab should be 2 5 1 cm above the ground level The depth of the slab below the ground level and its structural design is governed by the type of soil and climatic conditions The slab must not be in contact with any part of the building wall or foundation The space between the slab and the building wall prevents the possibility of transmitting vibration to the building When installing a unit on the roof of a building the 4 of 67 structural members supporting the unit must be sufficiently strong for the weight of the unit and mounting rails 3 3 Hardware Unless otherwise specified all hardware except sheet metal screws must be torqued to settings from Page 4 Table 1 Table 1 Recommended Torque Settings Bolt Head Grade Marking QC Nut Grade Marking Bolt Size Grade 2 Grade 5 10 24 27 ineLb 42 ineLb 1 4 20 65 ineLb 101 ineLb
32. to the SC30 control following the two additional trials the control will drops to 4 7 VDC At this point the SC30 relay go into lockout The valve relay in the ignition circuit opens SC30 terminal 5 has no output control will be de energized shutting of the gas de energizing the 2nd stage valve and the valve immediately and the combustion blower timer relay control switches the combustion following a 30 second post purge period If the blower to low speed operation Low fire modu thermostat controller is still calling for heat lation will continue as in Step 10 one hour after a lockout occurs the control will automatically reset and initiate a call for heat ih When the thermostat emperaire controller is satisfied and the demand for heat ends the Sequence heat enable contact opens and the 1st stage Burners ignite and cross light Timer relay con valve is de energized immediately the control trol is powered terminal 7 simultaneously and senses loss of flame and a 30 second post begins timing a 90 second warm up period purge occurs at high speed before de ener while maintaining the combustion blower at gizing the combustion blower high speed and powers the SC30 The SC30 will output 12 to 13 VDC to the modulating con trol valve during the timing duration 90 sec onds of timer relay control regardless of the analog input signal to SC30 terminals 7 amp 8 When flame is detected by flame sensor the spark is shut off imm
33. wheel Slowly work around the entire face of the wheel to complete the procedure Do not damage wheel face by excessive pressure of the vacuum nozzle on the wheel face 2 Using 20 psi clean dry air and a small air nozzle blow air through one face of the wheel At a similar location on the opposite side of the wheel gently apply a shop vacuum to receive any remaining debris exiting the wheel In the event that this method does not remove visual buildup or return pres sure drop to within normal parameters a wheel washing procedure is recom mended The energy conservation wheels can be washed thoroughly with water without affecting the performance of the wheel The wheel will simply dry out following a washing procedure and resume normal energy transfer without any deviation in performance If the energy conservation wheel can be easily removed from the cassette or unit it is recommended to do so to facilitate the washing process However in most cases it is impractical to remove larger wheels and therefore the wash ing procedure must take place within the air handling unit and provisions need to be made to collect the runoff water from the bottom of the unit or collect the Pied by using a wet vac on the opposite side of the wheel during the proce ure 1 Shield all electrical components and bearings with plastic sheeting Ensure that an adequate drainage system exists to collect runoff water from the bottom of the unit Alternati
34. 00 609 6 m US 4500 1371 6 m Canada without modification Consult factory if US installation is above 2000 609 6 m or Canadian installation is above 4500 1371 6 m 5 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 5 SPECIFICATIONS All specification dimension and weight information is available in the PR Series Dimension and Selection Guides that can be downloaded from the ADDISON website at www addison hvac com 6 of 67 SECTION 6 LIFTING A PACKAGED AIR CONDITIONING UNIT A WARNING Crush Hazard Use proper lifting equipment and practices Failure to follow these instructions can result in death injury or property damage The unit must be installed in compliance with all applicable codes The qualified installer or service technician must use best building practices when installing the unit 6 1 Moving Lifting a Packaged Air Conditioning Unit 6 1 1 Preparing to Move Lift the Unit Prior to moving lifting the unit the following steps must be performed 1 Remove all packaging or blockers 2 Remove all packages that were shipped inside the unit 3 Inspect the unit to e Verify that there is no damage as a result of shipping e Ensure that it is appropriately rated for the utilities available at the installation site e Verify that the lifting lugs are intact undamaged and secured to the packaged air conditioning unit e Ensure factory installed hardware is torqued as sp
35. 47 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 18 TROUBLESHOOTING DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technician only Failure to follow these instructions can result in death electrical shock or injury A WARNING Explosion Fire Falling Burn Cut Pinch Explosion Hazard Hazard Hazard Hazard Hazard Hazard Turn off gas Keep all Use proper Allow Wear System contains supply to flammable safety equipment to protective gear R 410A equipment objects liquids equipment and cool before during refrigerant before service and vapors the practices to service installation minimum avoid falling operation and Operating required Internal service pressures clearances to Do not use any components may exceed combustibles part of of equipment Edges limits of away from equipment as may still be Sharp R 22 service equipment support hot after equipment operation Some objects Use proper will catch fire refrigerant or explode handling when placed practices close to tools and equipment equipment Failure to follow these instructions can res
36. Airflow 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 return air section senses return air above 135 F 57 2 C The firestat must be manually reset Freezestat This option shuts down the unit when the discharge temperature falls below the controller s setpoint Service Receptacle This option provides a 115V service receptacle with 15A breaker It is mounted in a 2 x 4 51cm x 10 2cm enclosure It can be field wired or factory wired Smoke Detector This option provides an ionization type supply air smoke detector which shuts off the unit if smoke is detected SECTION 14 SEQUENCE OF OPERATION 37 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 15 START UP PROCEDURES A DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technician only Failure to follow these instructions can result in death electrical shock or injury A WARNING Explosion Hazard Falling Hazard Burn Hazard Leak test all components of Use proper safety Allow equipment to cool equipment gas pip
37. FOR YOUR SAFETY If you smell gas Open windows DO NOT try to light any appliance DO NOT use electrical switches ADDISON ome metere ADDISON PR Series Extinguish any open flame Leave the building Immediately call your local fuel supplier after leaving the building Follow the fuel supplier s instructions If you cannot reach your fuel supplier call the Fire Department A WARNING Fire Hazard Keep all flammable objects liguids and vapors the minimum required clear ances to combustibles away from equipment Some objects will catch fire or explode when placed close to equipment Failure to follow these instructions can result in death injury or property damage WARNING Improper installation adjustment alteration service or maintenance can result in death injury or property damage Read the installation operation and service manual thoroughly before installing or servicing this equipment Installation must be done by a registered installer contractor qualified in the installation and service of air conditioning equipment NOT FOR RESIDENTIAL USE C US LISTED Intertek 2014 Addison Packaged Rooftop Unit Installation Operation amp Service Manual PR 036 PR 210 PR 048 PR 240 PR 060 PR 300 PR 072 PR 360 PR 084 PR 420 PR 096 PR 480 PR 120 PR 540 PR 150 PR 600 PR 180 PR 660 Installer Please take the time to read and understand these instruct
38. IES UNITS Page 6 of 6 EXHAUST FAN AND FAN MOTOR CHECKS IF APPLICABLE Fan Make Catalog No Fan Motor Make Catalog No Set screws tight Fan wheel rotates freely Vibration isolators adjusted OTHER OPTION CHECKS IF APPLICABLE Liquid Line Solenoid Installed Yes Phase Monitor Protection Installed Yes Thermostat Installed Yes Liquid Injection Installed Yes Other Option Installed Yes CONTROLS CHECKS IF APPLICABLE No No No No No HP Voltage Setting If yes provide details If yes provide details If yes provide details If yes provide details If yes provide details Manufacturer Installation Installed by factory Desc of Operation OTHER COMMENTS Installed in field only replacement parts sold and supplied by Addison Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of you
39. If no flame is present at the flame sensor within 10 seconds the spark and gas valve will be de energized A 15 second inter purge period begins and the combustion blower continues to run After the inter purge period another ignition trial will take place If burner fails to light or prove the flame sensor following the two additional trials the control will go into lockout The valve relay in the ignition control will be de energized shutting of the gas valve immediately and the combustion blower following a 30 second post purge period If the thermostat controller is still calling for heat one hour after a lockout occurs the control will automatically reset and initiate a call for heat sequence 7 Burners ignite and cross light Timer relay con trol is powered terminal 7 simultaneously and begins timing a 90 second warm up period while maintaining the combustion blower at high speed and powers the SC30 The SC30 will output 12 to 13 VDC to the modulating con trol valve during the timing duration 90 sec onds of timer relay control regardless of the analog input signal to SC30 terminals 7 amp 8 8 When flame is detected by flame sensor the spark is shut off immediately and gas valve s and combustion blower remain energized 9 When the initial timer in timer relay control times out it defaults the gas valve to low fire and the combustion blower to low speed and returns control of the operating mode to the building te
40. LA m T1 T2 VIt Na T2 T3 Vit aM 2 FLA T1 T2 Vit T2 T3 Vit Wi 3 FLA T1 T2 Vit T2 T3 Vit aM 4 FLA T1 T2 Vit i T2 T3 Vit nu LEAD CIRCUIT CHECKS Suct Press Suct Line Temp Lqd Ln Hd Press Liq Line Temp LAG CIRCUIT CHECKS Lag circuit present Yes No Suct Line Temp Suct Press Lqd Ln Hd Press Liq Line Temp T1 T3 Vit T1 T3 Vit aM T1 T3 Vit T1 T3 Vit Serial No Serial No Serial No Serial No 2Ph Aw 3Ph 2Ph amp 3Ph amp 2Ph amp 3Ph 2Ph amp 3Ph Superheat Temp To calculate Superheat temperature convert suction pressure to saturation temperature Then subtract suction line temperature Subcool Temp To calculate Subcooling temperature convert liquid line head pressure to condensing temperature Then subtract liquid line temperature If yes complete the below section Superheat Temp To calculate Superheat temperature convert suction pressure to saturation temperature Then subtract suction line temperature Subcool Temp To calculate Subcooling temperature convert liquid line head pressure to condensing temperature Then subtract liquid line temperature only replacement parts sold and supplied by Addison information you may require including the Installation Operation and Service Manual Installation Code and Quarterly Inspections All installation and servic
41. N WILL NOT PAY FOR Service trips service calls and labor charges Shipment of replacement parts Claims where the total price of the goods have not been paid Damage due to Improper installation operation or maintenance Misuse abuse neglect or modification of the ADDISON PR Series in any way Use of the ADDISON PR Series for other than its intended purpose Incorrect gas or electrical supply accident fire floods acts of God war terrorism or other casualty Improper service use of replacement parts or accessories not specified by Addison Failure to install or maintain the ADDISON PR Series as directed in the Installation Operation and Service Manual Relocation of the ADDISON PR Series after initial installation Use of the ADDISON PR Series in a corrosive atmosphere containing contaminants Use of the ADDISON PR Series in the vicinity of a combustible or explosive material Any defect in the ADDISON PR Series arising from a drawing design or specification supplied by or on behalf of the consumer Damage incurred during shipment Claim must be filed with carrier WARRANTY IS VOID IF The ADDISON PR Series is not installed by an contractor qualified in the installation and service of packaged rooftop unit You cannot prove original purchase date and required annual maintenance history The data plate and or serial number are removed defaced modified or altered in any way The
42. ON No fan operation No 24V control voltage Check for 24 VAC at control No input pressure to control Check alignment of capillary fitting Schrader valve depressor must depress Schrader valve enough to allow pressure into capillary Bad fan motor Disconnect power When P266 is used place a jumper from L1 to M1 and connect power If fan does not start motor is bad and should be replaced Pressure transducer problem Disconnect 6 pin connector from right side of control Place a jumper wire between third pin from the top and bottom pin on the control not the cable If fan goes to full speed check for input pressure If it has been determined there is adequate pressure the transducer is bad and the control must be replaced Fan stops when pressure reached the high end of the operating range No fan modulation on off operation Control is not wired correctly Control is not wired correctly See wiring diagrams See wiring diagrams Fan starts at full speed Erratic fan operation Fan motor is cycling on thermal overload Control is not wired correctly Control is not wired correctly See wiring diagrams See wiring diagrams Dirty or blocked condenser coil Dirty or blocked condenser coil Clean condenser coil Clean condenser coil Wrong motor for fan speed control application Replace with motor approved for fan speed control application
43. Power wiring connections on units with factory mounted disconnects should be made at the line side of disconnect Main power wiring should be sized for the minimum wire ampacity shown on the unit rating plate SECTION 14 SEQUENCE OF OPERATION SECTION 14 SEQUENCE OF OPERATION A DANGER Electrical Shock Hazard Disconnect electric before service More than one disconnect switch may be required to disconnect electric from equipment Equipment must be properly grounded Failure to follow these instructions can result in death or electrical shock 14 1 Unit Configuration Based on the unit s application the unit may be configured in any of the following styles to achieve the described functionality For a comparison of these configurations see Page 35 Figure 17 FIGURE 17 Unit Configuration 036 3 nominal tons 048 4 nominal tons 060 6 nominal tons 072 7 nominal tons 084 8 nominal tons 096 10 nominal tons 120 12 nominal tons 150 15 nominal tons 180 18 nominal tons 210 19 nominal tons 240 20 nominal tons 300 27 nominal tons 360 30 nominal tons 420 35 nominal tons A Airsource cooling only F Air handler H Airsource heatpump W Watersource heatpump water loop ground loop and geothermal applications O 100 Outside air R Recirculating air C Combination 100 outside air and recirculating air PR Packaged rooftop 35 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 14 2 Controls O
44. XV defective Check the TXV ensure bulb is insu lated High Discharge Pressure TXV setting Air inlet to condenser dirty or obstructed Check TXV setting and calibrate superheat Check for proper clearances and possible air recirculation Condenser fan motor defective Condenser fan control has incorrect setting Check condenser fan motor and run capacitor Check calibration of low ambient head pressure control Suction Pressure Too Low Refrigerant undercharge Blower running backwards Check pressures and subcooling Interchange any two wires con nected to motor Defective or improperly adjusted expansion valve Dirty filter Check superheat and adjust TXV Check filter and evaporator coil Too little airflow or low entering air temperature Check airflow and entering air wet bulb conditions Restriction in suction or liquid line Check refrigerant circuit for restric tion Head Pressure Too Low 52 of 67 Insufficient refrigerant charge Check subcooling check for leak Defective or improperly adjusted expansion valve Check superheat and adjust TXV Low suction pressure See above suction pressure too low Condenser fan control setting Check calibration of low ambient control Defective compressor See above high suction pressure SECTION 18 TROUBLESHOOTING Compressor Short Cycles Thermostat
45. a Refer to CSA B149 1 latest revision Natural Gas and Propane Installation Code Electrical connection to unit must be in accordance with the following codes United States Refer to National Electrical Code NFPA 70 latest revision Wiring must conform to the most current National Electrical Code local ordinances and any special diagrams furnished Canada Refer to Canadian Electrical Code CSA C22 1 Part 1 latest revision 4 3 Installation Codes 4 7 Venting Installations must be made in accordance with NFPA 90A latest revision Standard for the Installation of Air Conditioning and Ventilation Systems 4 4 Aircraft Hangars Installation in aircraft hangars must be in accordance with the following codes United States Refer to Standard for Aircraft Hangars NFPA 409 latest revision Canada Refer to Standard CSA B149 1 latest revision Natural Gas and Propane Installation Code The optional gas furnace in the unit must be vented in accordance with the requirements within this manual and with the following codes and any state provincial or local codes which may apply United States Refer to NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code Canada Refer to CSA B149 1 latest revision Natural Gas and Propane Installation Code 4 8 High Altitude The optional gas furnace in the unit is approved for installations up to 20
46. all electrical leads are sufficiently insulated 5 Check that all electrical and system connec tions are properly made and tightened 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 the motor 10 Check rotation 15 1 4 Compressors With the supply fan operational prepare for compressor operation 1 Verify that the crankcase heaters are operating These should operate for at least 24 hours before starting the compressors Crankcase heaters must be operating during off cycles to prevent liquid refrigerant from migrating to the compressor crankcase 15 1 5 Energy Conservation Wheel Before starting up the unit check the following 1 Free rotation of rotor when moved by hand If not recheck the seal to determine whether or not it is binding If so with the wheel stopped 39 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 15 1 6 move seals as close to the sealing surface as possible but without exceeding grip range of bulb seal and without pressing the bulb down against the seal face Bump the motor If the motor will not turn the seal is too close and should be nudged back where needed The seal will seek its equilibrium position based on the closest part of the sealing face Because the seal is meant to be a noncontact seal small gaps may be se
47. and start up 1 2 Inspection and Setup The unit was leak tested pressure tested evacuated charged and run tested prior to shipment Immediately upon receipt of the unit check the electrical supply and or fuel characteristics of the unit and verify that they match the electrical supply and or fuel available Verify that the specifications on the unit rating plate match your 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 ensure proper clearances See Page 4 Section 3 Any small options which do not come attached to the unit i e sensors will be found inside the unit control enclosure If the unit must be temporarily stored i e job site is not ready for installation of the unit the unit should be set on 4 x 4 10 cm x 10 cm pieces of timber on the ground in a protected area The unit should be covered to be protected from the environment 1 3 Safety Labels and Their Placement Product safety signs or labels should be replaced by product user when they are no longer legible Please contact Addison or your ADDISON independent distributor to obtain replacement signs or labels See Page 2 Figure 1 1 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 1 4 California Proposition 65 In accordance with California Proposition 65 requirements a warning label mus
48. ar duct inside width The unit is not designed to support the weight of ductwork Ductwork must be constructed in a fashion that is self supporting Depending on the options ordered with the unit flanges either external or internal may be provided to facilitate connection of ductwork In cases where flanges are not provided flat surfaces on the exterior skin of the unit are provided to facilitate connection of ductwork Neither the flanges nor exterior skin of the unit are capable of supporting the load of the ductwork Ductwork support must come from the structure itself that the unit is servicing Ductwork passing through unconditioned spaces must be insulated including a SECTION 8 DucT CONSIDERATIONS vapor barrier to prevent unnecessary energy losses and or condensation 8 1 Inlet Ductwork Inlet ductwork height and width must be no smaller than the packaged air conditioning unit inlet height and width and supply only uncontaminated air to the unit 8 2 Return Air Ductwork Return air ductwork height and width must be no smaller than the unit return air opening height and width 8 3 Discharge Ductwork Discharge air ductwork height and width must be no smaller that the unit discharge air opening height and width 11 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 9 REFRIGERATION CIRCUITS AWARNING Explosion Hazard System contains R 410A refrigerant Operating pressures may exceed lim
49. ation and service must be done by a trained technician only Failure to follow these instructions can result in death or injury 10 1 Principal of Operation The energy conservation wheel module is a self contained unit consisting of the following components 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 dessicant Standard wheels are 4 10 1 cm thick and transfer the total energy sensible and latent of the airstream Cassette Steel structure composed of punched sheet metal that houses the enthalpy wheel Drive Motor Constant speed 220 1 60 motor rotates the enthalpy wheel at a typical speed of 45 RPM Variable Frequency Drive Optional Drive can be used to vary the wheel s rotation speed See provided energy conservation wheel manual for more information 20 of 67 SECTION 11 Gas FURNACES SECTION 11 GAS FURNACES A DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technician only Failure to follow these instructions can result
50. ble fire electrical or burn hazards Please pay special attention when reading and following the warnings in these sections Installation service and at a minimum quarterly inspection of packaged rooftop unit must be done by a contractor qualified in the installation and service of air conditioning equipment Read this manual carefully before installation operation or service of this equipment These instructions local codes and ordinances and applicable standards that apply to piping electrical wiring ventilation etc must be thoroughly understood before proceeding with the installation Protective gear is to be worn during installation operation and service in accordance to the Occupational Safety and Hazard Administration OSHA Gear must be in accordance to NFPA 70E latest revision when working with electrical components Thin sheet metal parts have sharp edges To prevent injury the use of work gloves is recommended Before installation check that the electrical supply and or fuel conditions and adjustment of the equipment are compatible This equipment must be applied and operated under the general concepts of reasonable use and installed using best building practices This equipment is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the equipmen
51. by others A factory supplied or field supplied thermostat can be connected to the factory mounted and factory wired terminal strip for electromechanical controls There are four 24V factory supplied thermostat options 1 heat 1 cool 1 heat 1 cool with humidity control e heat 2 cool 3 heat 2 cool with humidity control All four thermostats have a 45 90 F 7 32 C temperature control range with a 1 F 0 5 C accuracy and are capable of connecting to optional factory supplied remote indoor air and outdoor air 36 of 67 14 3 Basic Sequence of Operation All sequence of operation information for units controlled with ALC controls is available in the ALC Sequence of Operation documents that can be downloaded from the Addison website at www addison hvac com Sequence of operation information specifically for the operation of the gas furnace and electric heater modules can be found on Page 28 Section 11 5 For sequence of operation information for units controlled with field supplied DDC controls whether factory mounted or field mounted consult the DDC controls manufacturer and or installer 14 4 Controls Options Controls options include but are not limited to Carbon Dioxide Detector This option provides a room mounted carbon dioxide detector for initiating additional outdoor ventilation Clogged Filter Indicator This section provides a differential pressure switch and status indication Exhaust Fan
52. control will attempt two additional ignition trials If no flame is present at the flame sensor within 10 seconds the spark and gas valve will be de energized A 15 second inter purge period begins and the combustion blower continues to run After the inter purge period another ignition trial will take place If burner fails to light or prove the flame sensor following the two additional trials the control will go into lockout The valve relay in the ignition control will be de energized shutting of the gas valve immediately and the combustion blower following a 30 second post purge period If the thermostat controller is still calling for heat one hour after a lockout occurs the control will automatically reset and initiate a call for heat sequence 7 Burners ignite and cross light Timer relay con trol is powered terminal 7 simultaneously and begins timing a 90 second warm up period while maintaining the combustion blower at high speed The timer relay control will main tain this mode of operation regardless of sta tus of thermostat second stage 28 of 67 8 When flame is detected by flame sensor the spark is shut off immediately and gas valve s and combustion blower remain energized 9 When the initial timer in timer relay control times out it defaults the gas valve to low fire and the combustion blower to low speed and returns control of the operating mode to the temperature controller If the controller is calli
53. cross the Wheel Supply Air Exhaust Air Set screws tight HP Voltage Sheaves tight and adjusted Belt tension adjusted RPM Amperage Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISONG manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacement parts sold and supplied by Addison Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through ADDISON representatives Please contact us for any further information you may require including the Installation Operation and Service Manual This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment 64 of 67 ADDISON 7050 Overland Road Orlando Florida 32810 USA Tel 407 292 4400 Fax 407 290 1329 www addison hvac com SECTION 18 TROUBLESHOOTING START UP FORM PR SER
54. ctions Check all wiring connections Tighten as necessary Check internal wiring Replace as necessary with type THHN 221 F 105 C 600V 16 gauge wire or equivalent Control Panel Check heater control panel for dust dirt and moisture Clean as necessary Check heating elements for dust dirt build up and or broken elements Heating Elements Replace elements and or clean elements with low pressure air as necessary Check element male female chassis insulators for breaks and or cracks Replace as necessary Check element support frame insulators Replace missing or broken insula tors as necessary 16 11 Filters Filters should be checked for dirt restriction on a monthly basis or as required Replace filters with filters of equal specification when they appear dirty 46 of 67 SECTION 17 REPLACEMENT PARTS SECTION 17 REPLACEMENT PARTS ADANGER A WARNING Electrical Shock Hazard Explosion Hazard Fire Hazard Carbon Monoxide Hazard Use only genuine ADDISON replacement parts per this installation operation and service manual Failure to follow these instructions can result in death electric shock injury or property damage Before ordering replacement parts please contact factory to make sure that the replacement parts are the direct replacement for your specific unit Replacement parts used in units with the harsh environment coating option must be coated before being installed
55. d you may also have other rights which vary from jurisdiction to jurisdiction Addison shall not be responsible for failure to perform under the terms of this warranty if caused by circumstances out of its control including but not limited to war fire flood strike government or court orders acts of God terrorism unavailability of supplies parts or power No person is authorized to assume for Addison any other warranty obligation or liability LIMITATIONS ON AUTHORITY OF REPRESENTATIVES No representative of Addison other than an Executive Officer has authority to change or extend these provisions Changes or extensions shall be binding only if confirmed in writing by Addison s duly authorized Executive Officer 67 of 67
56. e of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through ADDISON representatives Please contact us for any further This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment 62 of 67 SECTION 18 TROUBLESHOOTING ADDISON START UP FORM Orlando Florida 32810 USA PR SERIES UNITS Tel 407 292 4400 Fax 407 290 1329 www addison hvac com Page 4 of 6 SUPPLY FAN AND FAN MOTOR CHECKS Fan Mfg F Set screws tight Fan wheel rotates freely Fan Serial No Vibration isolators adjusted Motor Mfg HP Voltage Amperage Setting Hz RPM JI Motor Seriai No VFD Mfg FILTER CHECKS Item Quantity Type Pre Filters Final Filters SETPOINT CHECKS
57. ecified 4 Prepare the installation location to be ready to accept the unit i 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 SECTION 6 LIFTING A PACKAGED AIR CONDITIONING UNIT 6 1 2 Moving the Unit with Forklift Move the unit using forklift pockets if provided 6 1 3 Lifting the Unit with Crane Lift the unit into place installing appropriate hardware supplied by others into all four lifting lugs holes Use spreader bars to ensure that the lifting cables clear the sides of the unit See Page 8 Figure 2 Test lift to 12 30 5 cm to check stability of rigging before completing the lift Use caution as the load may be unbalanced The unit must be kept level during the lift to prevent tipping twisting or falling If lifted improperly product damage may occur 7 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 2 Lifting a Small Unit Lifting Source Adjust Cable Length To Lift OY Spreader Point As Necessary Based IS On Unit Center Of Gravity NS N n Fixed Cable P Fixed Shackle With Minimum 1 25 3 2cm Pin NOTE Airsource packaged unit is illustrated Lifting procedures for watersource packaged units and air handlers are similar FIGURE 3 Lifting a Large Unit Lifting Source Adjust Cable Length To Lift Point As
58. ectric Heater Wiring and Wiring Connections 46 4 6 Electrical tede Ee veces 5 16 11 Filtars AAA cer ii es 46 4 7 NOMING kaka 5 SECTION 17 Replacement 47 4 8 High Altitude 5 SECTION 18 Troubleshooting 48 SECTION 5 Specifications nn 6 18 1 Supply Fane 49 SECTION 6 Lifting a Packaged Air Conditioning Unit 7 18 2 Compressor 50 6 1 Moving Lifting a Packaged Air Conditioning Unit 7 18 3 Refrigeration Circuit 52 SECTION 7 Roof Curb eese 9 18 4 Variable Speed Head Pressure Control 55 7 1 Roof Curb Assembly and Installation 9 18 5 Variable Speed Head Pressure Control 56 7 2 Unit Mounting to Roof 10 18 6 Energy Conservation 57 SECTION 8 Duct Considerations 11 18 7 Gas F rfiace uiri detener teo cadera 58 8 1 Inlet Ductwork me 11 18 8 Electric 59 8 2 Return Air Ductwork seee 11 18 9 ADDISON PR Series Start Up Procedures
59. ediately and gas valve s and combustion blower remain energized When the initial timer in timer relay control times out it defaults the gas valve to low fire and the combustion blower to low speed and returns control of the operating mode to the building temperature controller 31 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 12 ELECTRIC HEATERS A DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technician only Failure to follow these instructions can result in death electrical shock or injury A WARNING Fire Hazard Burn Hazard Cut Pinch Hazard Keep all Allow equipment to cool Wear protective gear flammable objects before service during installation liquids and vapors the operation and service minimum required Internal components of clearances to equipment may still be Edges are sharp combustibles away from hot after operation equipment Some objects will catch fire or explode when placed close to equipment Failure to follow these instructions can result in death injury or property damage 32 of 67 12 1 Principle of Operation The electric heat
60. emand for heat ends the 1st stage valve is de energized immediately the control senses loss of flame and a 30 second post purge occurs at high speed before de ener gizing the combustion blower 11 5 3 Sequence of Operation for 20 100 Modu lating Furnace with 75 200 MBH 21 9 58 6kW Input When system is powered up 24 VAC will be applied to the ignition control ignition control terminals 24VAC R and to the timer relay control The ignition control will reset perform a self check routine flash the diagnostic LED for up to four seconds and enter the thermostat scan standby state The amber light on the timer relay control will be lit indicating it is in the ready position Call for Heat 1 Controller provides contact closure on call for heat 24 VAC to is supplied to ignition control termi nal TH provided limit switch is in closed posi tion 3 The control will check that pressure switch con tacts are open ignition control terminal PSW is not powered 4 Combustion blower is then energized at high speed 5 When the airflow switch closes a 15 second pre purge period begins 6 At end of pre purge period the spark com mences and the ist stage gas valve is ener gized for the trial for ignition period If the burners fail to light or carryover during a trial for ignition the control will attempt two additional 12 29 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL ignition trials
61. en between seal and sealing surface once the equilibrium position is reached Seal leakage is meant to be under 5 at 1 inch of differential between supply and exhaust Some seal run in is to be expected so don t be alarmed by small amounts of wear in the neoprene Correct motor rotation This can be checked by detaching the belts from the drive sheave and bumping the motor The sheave should be rotating in the direction such that the belt will result in rotation per the exterior markings If not rewire the motor Actual airflow orientation matches design See the identification markings on the cassette to check the four duct connections to the unit Correct and sufficiently tight belts Belt length is set by the manufacturer Consult factory if the belt appears too loose Correct VFD wiring and programming to ensure proper wheel operation and prevention of frost formation Check the power supply for proper rating Make sure that the proper jumper orien tation is used for the specific control input Make sure that the unit is programmed for proper input voltage and output voltage Gas Furnace Before starting up the unit perform the following steps 1 Confirm gas piping has been completed and leak tested Turn thermostat or temperature controller to its lowest setting Turn off gas supply at the manual shut off valve Turn off power to the unit at the disconnect switch Remove access panel or open door to unit ve
62. enance inadapt peut entra ner la mort des blessures ou des dommages mat riels Lire attentivement le manuel d installation d utilisation et d entretien avant donner un exemplaire de ce manuel au propri taire d installer ou de r parer cet quipement instructions avant toute installation L installateur doit Propri taire L installation doit tre effectu e par un entrepreneur Garder ce manuel dans un endroit s r pour fournir les qualifi dans l installation et l entretien d appareils de informations n cessaires au personnel d entretien chauffage au gaz ou par votre fournisseur de gaz Concus pour les applications non r sidentielles Addison 7050 Overland Road m Orlando FL 32810 T l phone 1 407 292 4400 C US Fax 1 407 290 1329 LISTED Intertek 2014 Addison P N AD165000FC Orig 07 14 www addison hvac com TABLE OF CONTENTS SECTION 1 Packaged Rooftop Unit Safety 1 SECTION 14 Sequence of Operation 35 1 1 Description of 1 14 1 Unit Configuration 35 1 2 Inspection and Setup 1 14 2 Controls Options 36 1 3 Safety Labels and Their Placement 1 14 3 Basic Sequence of 37 1 4 California Proposition 65 2 14 4
63. epending on the type of controls and options supplied Note Spark testing or shorting of the control wires by any means will render the transformers inoperative 13 1 Wiring and Electrical Connections All electrical wiring and connections including electrical grounding must comply with United States Refer to National Electrical Code NFPA 70 latest revision Wiring must conform also to local ordinances and any special diagrams furnished Canada Refer to Canadian Electrical Code CSA C22 1 Part 1 latest revision Check rating plate on unit for supply voltage and current requirements If any of the original control wire supplied with the unit must be replaced replace it with type THHN 221 F 105 C 600 V 16 gauge wire or equivalent For all other wires replace with the equivalent size and type of wire that was originally provided with the unit 34 of 67 13 2 Disconnect An external weather tight disconnect switch properly sized for the unit total load is required for each unit This disconnect can be supplied by the factory or supplied by others Do not use the unit disconnect as a method of on off control Use the operating controller or thermostat to shut down the unit 13 3 Current Draw For current requirements of the unit refer to the unit rating plate 13 4 Wiring Connections Power wiring should be connected to the main power terminal block located within the unit main control section
64. er is a self contained duct heater comprised of Power distribution Safety circuits Control circuit Heating elements 12 2 Operating and Safety Controls Safety systems are required for proper performance of the electric heater The electric heater shall not be permitted to operate with any safety system disabled If a fault is found in any of the safety systems then the system shall be repaired only by a contractor qualified in the installation and service of electric heating equipment using only components that are sold and supplied by Addison Air Proving Switch An air proving switch is provided as part of the control system to verify airflow across the elements If sufficient airflow is not present indicating lack of proper air movement through the elements the switch opens shutting off the elements The air proving switch has fixed settings and is not adjustable Automatic Limit Switch To prevent operation of the electric heater under low airflow conditions FIGURE 16 Wiring Diagram SECTION 12 ELECTRIC HEATERS the unit is equipped with a fixed temperature high limit switch mounted on the vestibule panel This switch will shut off heater when the actual discharge air temperature exceeds the switch s setpoint Reduced airflow may be caused by restrictions upstream or downstream of the circulating air blower such as dirty or blocked filters or restriction of the air inlet or outlet to the unit 12 3 Wiring
65. hrough ADDISON representatives Please contact us for any further information you may require including the Installation Operation and Service Manual This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment Copyright 2014 Printed in USA P N ADPRSFNA Rev Orig 05 14 60 of 67 SECTION 18 TROUBLESHOOTING ADDISON START UP FORM Orlando Florida 32810 USA PR SERIES UNITS Tel 407 292 4400 Fax 407 290 1329 www addison hvac com GENERAL INFORMATION Cust Name Project Name Address Contr Name City State Zip Unit Model No Phone Fax Unit Serial No Outdoor Air Temp db wb Supply Air Temp db wb Return Air Temp db wb Otdr Fn Disch Temp db wb Design CFM Design Duct ESP UNIT OPERATION INFORMATION PRE START CHECKS Page 2 of 6 Unit in satisfactory condition Electrical connections tight Shipped blocks removed Electrical wiring correct Unit supply voltage correct Overloads adjusted Unit checked for debris Unit noise level acceptable UNIT ELECTRICAL CHECKS Electric Char V Ph Hz Amperage Supply Voltage L1 L2 L2 L3 L1 L3 COOLING CHECKS Cooling Type Chilled Water Mechanical No of Circuits Control Valve If Mechanical If Chilled Water Refrig Type GPM WPD Glycol Charge Water Temp In Water Temp Out Installation Code and
66. il Solenoid valve standard or modulating bypass reheat valves modulating Oil separator Receiver Refrigerant pressure switches high and low Non adjustable Adjustable Switchable liquid sub cooling components Coil Two solenoid valves Check valve Thermal expansion valve TXV See Page 13 Figure 5 through Page 19 Figure 11 for schematics of the most common refrigeration circuit configurations All schematics illustrate a single compressor single circuit cooling only system For single circuit systems with a tandem compressor the pair of compressors are mounted on a common base that are used together on a single refrigeration circuit For dual circuit systems with two independent compressors the circuitry and components are duplicated for the second circuit For heat pump systems a reversing valve is included SECTION 9 REFRIGERATION CIRCUITS FIGURE 5 Circuit Diagram for Standard Compressor and Hot Gas Bypass and No Hot Gas Reheat Airsource Units Varispeed Controller Condenser Fan Condenser Coil Evaporator Coil Compressor a Accumulator Bypass Valve 5 Water Out Watersource Units i Water In i Coaxial Condenser Filter Drier Coil Evaporator Coil OCD Compressor TX Valve Sightglass Accumulator Hot Gas Bypass Valve 13 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 6 C
67. inal PSW is pressure will vary from 0 3 to 1 2 w c 0 75 3 0 not powered mbar operating in this mode Combustion blower is then energized at high 11 If the signal increases above 5 3 VDC the speed SC30 relay closes powering terminal 6 on the When the airflow switch closes a 15 second timer relay control and starts a second time pre purge period begins delay of 15 seconds At the end of this time At end of pre purge period the spark com delay the fan switches to high speed and the mences and the 1st stage gas valve is ener 2nd stage gas valve opens through the timer gized for the trial for ignition period If the relay control terminal 9 provided the high air burners fail to light or carryover during a trial for switch contacts are closed The manifold pres ignition the control will attempt two additional sure will vary from 1 4 to 3 5 w c 3 5 8 7 ignition trials If no flame is present at the flame mbar in this mode sensor within 10 seconds the spark and gas 12 During heating operation the thermostat pres valve will be de energized A 15 second inter sure switch and main burner flame are con purge period begins and the combustion stantly monitored by the ignition control to blower continues to run After the inter purge assure proper system operation period another ignition trial will take place If 13 Operation continues in the high fire mode until burner fails to light or prove the flame sensor the controller input signal
68. ing equipment and practices to before service before operation avoid falling Internal components of Gas can leak if piping is not Do not use any part of equipment may still be hot installed properly equipment as support after operation Do not high pressure test gas piping with equipment connected Failure to follow these instructions can result in death injury or property damage 38 of 67 Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable 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 contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacement parts sold and supplied by Addison Check installation site to ensure all codes and engineering specifications are correct This section of the manual is intended to be used as an instructional guide to the commissioning of the unit Fill out the attached start up sheet located at the back of the manual as each step of the procedure is performed This procedure should be completed by the commissioning cont
69. ing on the unit Keep the area around the unit free of all objects 42 of 67 SECTION 16 MAINTENANCE 16 3 Direct Drive Supply and Exhaust Fans Blower Wheel Inspect blower wheel and clean as necessary A small build up of dust can cause a significant decrease in blower performance Check for excessive vibration Repair as required Motors Inspection 1 Inspect motor every months Keep the motor clean and vent openings clear Lubrication 1 Motors with grease fittings must be lubricated based on the table below Table 4 Motor Lubrication Intervals NEMA Frame Size Motor HP Rated at 1800 RPM Hrs Upto210 3 5 600 Over 210 to 280 7 5 20 4 750 Over 280 to 360 25 50 3 700 Note These intervals are based on severe duty Over lubricating bearings could result in reduced motor life 2 Ahigh grade ball or roller bearing grease must be used Recommended grease for standard service is Mobil Polyrex EM Other compatible greases include ChevronTexaco Polystar amp ChevronTexaco Rykon Premium 2 Pennzoil Pen 2 Lube and ChevronTexaco SRI 3 Motors without grease fittings are sealed for life and do not require re lubrication Instructions for Lubricating Before greasing be sure fittings are clean and free from dirt Remove grease relief plug or plate and using a low pressure grease gun pump in the required grease Do not over grease Relubrication interva
70. ions prior to any installation Installer must give a copy of this manual to the owner Owner Keep this manual in a safe place in order to provide your service technician with necessary information Addison 7050 Overland Road Orlando FL 32810 Telephone 1 407 292 4400 Fax 1 407 290 1329 www addison hvac com P N AD165000NA Orig 07 14 POUR VOTRE SECURITE Si vous sentez une odeur de gaz gt Y Ouvrir les fen tres LD SS N essayer pas d allumer un appareil B gt N utiliser pas d interrupteurs lectriques N utiliser pas de t l phone dans votre nue ADDISON PR Series Quitter le batiment Apr s avoir quitt le b timent appelez imm diatement votre fournisseur local Sume led inatuctions O L a re m b d D 0 u r a la climatisation AAVERTISSEMENT Manuel d installation d op ration et d entretien PR 036 PR 210 PR 048 PR 240 Risque d incendie PR 060 PR 300 inflammables la distance minimale de PR 072 PR 360 nar com S e 084 420 Certains objets prendront feu ou exploseront PR 096 PR 480 He aad proximit de l unit de PR 1 20 PR 540 Le non respect de ces instructions peut PR 150 PR 600 entrainer la mort des blessures corporelles PR 1 80 PR 660 ou des dommages mat riels A AVERTISSEMENT Installateur Linstallation le r glage la modification la r paration ou Vouloir prendre le temps de lire et de comprendre ces la maint
71. ipment may start automatically required to disconnect electric from equipment Do not operate with door open Equipment must be properly grounded Installation operation and service must be done by a trained technician only Failure to follow these instructions can result in death injury or property damage A WARNING Explosion Hazard Falling Hazard Burn Hazard Explosion Hazard Leak test all Use proper safety Allow equipment to System contains components of equipment and cool before service R 410A refrigerant equipment gas piping practices to avoid before operation falling Internal components Operating pressures of equipment may may exceed limits of Gas can leak if piping Do not use any part still be hot after R 22 service is not installed of equipment as operation equipment properly support Use proper refrigerant Do not high pressure handling practices test gas piping tools and equipment with equipment connected Failure to follow these instructions can result in death injury or property damage 41 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL Prior to any maintenance or service to the unit shut off lockout and tagout the electrical disconnect and fuel valve if applicable that supplies the unit in accordance with OSHA regulations and if the unit includes electric or gas heat allow ample time for the unit to cool After maintenance is performed or the unit is serviced the unit shal
72. ircuit Diagram for Standard Compressor Hot Gas Bypass and Standard Hot Gas Reheat 14 of 67 Airsource Units Varispeed Controller Reheat Solenoid Valve Fen Condenser Fan Reheat Check Valve Evaporator Coil Reheat Coil Condenser Coil Bleed Line Compressor Filter Drier TX Valve Accumulator Hot Gas Bypass Valve Watersource Units Water Out Water Regulating Valve Reheat Solenoid Valve 7 Reheat Check Valve Water In Coaxial Condenser Coil Filter Drier Evaporator Coil Reheat Coil Bleed Line Compressor Accumulator TX Valve Sightglass Hot Gas Bypass Valve SECTION 9 REFRIGERATION CIRCUITS FIGURE 7 Circuit Diagram for Standard Compressor Hot Gas Bypass and Modulating Hot Gas Reheat Airsource Units Varispeed Controller Modulating Bypass Valve Modulating heat Valve Reheat Check Valve Evaporator Coil Solenoid Compressor E Reheat Coil Y Strainer gt Restrictor Hot Gas A lat ccumulator Bypass Valve Watersource Units Modulating Bypass Valve 2 pa TX Valve Sightglass H Condenser Condenser Coil j2zzzzzzzz Filter Drier Fan Water Out Modulating ri Reheat Valve
73. its of R 22 service equipment Use proper refrigerant handling practices tools and equipment Failure to follow these instructions can result in death injury or property damage ACAUTION Equipment Damage Hazard System contains R 410A refrigerant Operating pressures may exceed limits of R 22 service equipment Use only R 410A refrigerant and POE 3MAF compressor oil Failure to follow these instructions can result in equipment damage 9 1 Refrigerant This unit utilizes R 410A a refrigerant with a very low ozone depletion rating Equipment utilizing R 410A refrigerant operates at higher pressures than other typical refrigerants System components have been sized and pressure switch settings have been adjusted for the reduced refrigerant flows and higher operating pressures The unit has a broad application range For optimum performance and efficiency it may be necessary to adjust the refrigerant charge to maintain desired 12 of 67 subcooling and superheat at operating temperature extremes 9 2 Components and Configurations There are many different refrigeration circuit variations available Depending on the configuration the unit may include but is not limited to the following components Accumulator Coil Evaporator coil Condenser coil Coaxial coil Compressor Standard scroll Digital scroll Filter drier Hot gas bypass valve Hot gas reheat components Check valve Co
74. l be re commissioned per the start up procedure as outlined on Page 38 Section 15 Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and 16 1 General supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable 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 contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacements parts sold and supplied by Addison Quarterly Follow the entire start up procedure at this time and check settings controls operating temperatures operating pressures power and control voltages and operation 16 2 Unit Exterior Cabinet Exterior After installation touch up scratches Periodic painting should be done there after as required The caulk should be inspected annually Re apply caulk as needed to maintain integrity Unit Location Verify that no flammable objects liquids or vapors are present near the unit If unit includes gas furnace clearances to combustibles around the vent must be adhered to See Page 4 Section 3 Do not hang anything from or place anyth
75. ll Not Start open wiring Compressor contactor not closing Check voltage to contactor coil transformer slave relay thermostat Internal compressor thermal overload open If compressor is hot allow 2 hours to cool see below Compressor defective Check compressor for electrical fail ure Compressor may be seized check for L R A High or low pressure switch open or defective Check calibration of high or low pressure switch Oil pressure control open or defective Check oil failure control see below Compressor Low on refrigerant Check sightglass and check pres Starts But Cuts sures Out On Low Airflow restricted Check for dirty evaporator coil dirty Pressure Switch filters dampers closed iced evapo rator VFD settings check motor amps duct design Restriction in liquid line Defective low pressure switch Check head pressure check and adjust TXV if not functioning prop erly check pressure drop across fil ter drier Check calibration of switch Compressor Starts But Cuts Out On High Pressure Switch Refrigerant overcharged Condenser fan control has incorrect setting Check pressures charge by sub cooling Check calibration of the low ambient control Fan motor defective Condenser coil inlet obstructed or dirty Check fan motor Check coil and inlet clearances and for possible air re circulation Air or non condensables in system Compare liquid refrigerant
76. location or malfunction Check thermostat check heat antic ipator setting Improper refrigerant charge Check subcooling verify superheat Defective high or low pressure control Check high or low pressure switch Cycling on internal overload Possible tight bearings see above Defective expansion valve Check TXV and superheat Poor air distribution Check ductwork for recirculation High discharge pressure See above high discharge pres sure Leaking discharge valves in compressor See above high suction pressure Running Cycle Too Long Or Unit Operates Continuously Refrigerant undercharged Check subcooling Dirty filter or evaporator coil Check filter coil and airflow Dirty or clogged condenser coil Check coil and airflow Air or other non condensables in system Check equalized high side pressure with equivalent outdoor tempera ture Defective compressor See above high suction pressure Restriction in suction and liquid line Check for restrictions in refrigerant circuit Control contacts stuck Check thermostat shorts in wiring slave relay compressor contactor Supply Air Refrigerant undercharge or leak in system Check subcooling and check for Temperature leaks Too High rh HI Evaporator plugged with dirt Check evaporator airflow and filter I
77. ls are specified in the table above After relubricating allow motor to run for 10 minutes before replacing relief hardware NOTE In general it is not recommended to mix greases of different brands The mixing of different types of thickeners may destroy the composition and physical properties of the grease In the event that a different grease is required by the end user the following steps can be taken Using the instruc tions for lubrications open grease outlet and purge the system as much as possible of the old or unwanted grease Repeat this same operation after one week of service Consult Addison or the motor manufacturer for further rec ommendations on grease compatibility 16 4 Condensing Fans Manually rotate to ensure free movement Check that all fan mounting hard ware is tight Check motor bearings for wear 16 5 Refrigeration Circuit Components Evaporator Coil Check for dirt and bent fins Clean with water from blower side towards filter side Condenser Coil Check for dirt and bent fins Clean by brushing off with broom Compressors Compressors are factory supplied with a charge of oil and should not require additional maintenance 43 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 16 6 Condensate Drain Pan and Drain Check for blockages Clean as necessary with mixture of 1 2 cup 0 1 L bleach and 1 gallon 1 9 L warm water if signs of mold or algae are present 16
78. mperature controller If the controller is providing an analog signal between 0 5 and 5 3 VDC to the SC30 control the system will continue to run at low speed combustion blower and with only the 1st stage valve open The modulating valve will be pow ered proportional to the input voltage signal from the controller and will open or close changing the gas manifold pressure Manifold pressure will vary from 0 4 to 1 2 w c 1 0 3 0 mbar operating in this mode 11 If the signal increases above 5 3 VDC the SC30 relay closes powering terminal 6 on the timer relay control and starts a second time delay of 15 seconds At the end of this time delay the fan switches to high speed and the 2nd stage gas valve opens through the timer relay control terminal 9 provided the high air switch contacts are closed The manifold pres sure will vary from 1 4 to 3 5 w c 3 5 8 7 mbar in this mode 30 of 67 12 During heating operation the thermostat pres sure switch and main burner flame are con stantly monitored by the ignition control to assure proper system operation Operation continues in the high fire mode until the controller input signal to the SC30 control drops to 4 7 VDC At this point the SC30 relay circuit opens SC30 terminal 5 has no output de energizing the 2nd stage valve and the timer relay control switches the combustion blower to low speed operation Low fire modu lation will continue as in Step 10 When the the
79. mproperly adjusted or defective expansion valve Check superheat and adjust TXV check bulb Defective compressor Check compressor for proper opera tion High discharge pressure See above high discharge pres sure Airflow is too high Check external static pressure Supply Air Airflow is too low Check evaporator coil filter check Temperature for closed dampers grills drive for Too Low loose parts belts misalignment check external static pressure Return air temperature too low Check entering air wet bulb condi tions Liquid Line Refrigerant undercharged See above high discharge pres Too Hot sure High discharge pressure Restriction upstream at point of frosting Suction Line Insufficient evaporator airflow Check airflow check fan VFD Frosting closed dampers Restriction in suction or liquid line Malfunctioning or defective expansion valve Restriction upstream at point of frosting Check bulb of TXV 53 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL Blower Motor Not Running Improper wiring Check wiring diagram Defective motor Check motor controller Defective thermostat or control circuit Check and Circuit Motor off on overload protector Allow motor to cool check amper age 54 of 67 18 4 Variable Speed Head Pressure Control SECTION 18 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTI
80. n only Failure to follow these instructions can result in death electrical shock or injury WARNING A Explosion Hazard Falling Hazard Burn Hazard Leak test all components of Use proper safety equip Allow equipment to cool equipment gas piping ment and practices to avoid before service before operation falling Internal components of Gas can leak if piping is not Do not use any part of equipment may still be hot installed properly equipment as support after operation Do not high pressure test gas piping with air handler connected Failure to follow these instructions can result in death injury or property damage Installation Code and Quarterly Inspections All installation and service of ADDISON equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Addison and conform to all requirements set forth in the ADDISON manuals and all applicable governmental authorities pertaining to the installation service operation and labelling of the equipment To help facilitate optimum performance and safety Addison recommends that a qualified contractor conduct at a minimum quarterly inspections of your ADDISON equipment and perform service where necessary using only replacement parts sold and supplied by Addison Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available t
81. nd cross light Timer relay con trol is powered terminal 7 simultaneously and begins timing a 90 second warm up period while maintaining the combustion blower at high speed The timer relay control will main tain this mode of operation regardless of sta tus of thermostat 2nd stage When flame is detected by flame sensor the spark is shut off immediately and gas valve s and combustion blower remain energized When the initial timer in timer relay control times out it defaults the gas valve to low fire and the combustion blower to low speed and returns control of the operating mode to the temperature controller If the controller is calling for 2nd stage heat timer relay control terminal 6 is powered After SECTION 11 Gas FURNACES a short time delay approximately 15 seconds the system switches the combustion blower to high speed and the 2nd stage gas valve 3 5 w c 8 7 mbar manifold pressure provided the high air pressure switch is proved 11 During heating operation the thermostat pres sure switch and main burner flame are con stantly monitored by the ignition control to assure proper system operation Operation continues on high fire until the 2nd stage thermostat is satisfied opening the 2nd stage contact and de energizes terminal 6 on the timer relay control turning off the 2nd stage gas valve and returning the combustion blower to low speed When the thermostat controller is satisfied and the d
82. ng Solenoid NO Filter Drier Bleed Line Evaporator Coil Subcool Coil Reheat Coil Compressor Bypass Valve Water Out Watersource Units Reheat Solenoid Valve Check Valve ai Coaxial Subcooling Condenser Solenoid Coil N C Subcooling HD Solenoid WO 3 Filter Drier Compressor Evaporator Coil Subcool Coil Reheat Coil Bleed Line A_I Check Valve AI UX valve Sightglass Accumulator Hot Gas Bypass Valve 17 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 10 Circuit Diagram for Standard Compressor Hot Gas Bypass Modulating Hot Gas Reheat and Sub Cooling Airsource Units Varispeed Controller Condenser Fan Reheat Check Valve Condenser Coil l Modulating E Modulating Bypass Valve Reheat Valve rap Subcooling Solenoid Subcoolin N C Solenoid NO Filter Drier Evaporator Coil Subcool Coil Reheat Coil Compressor TX Valve Sightglass Accumulator Hot Gas Bypass Valve Water Out Watersource Units i Modulating Modulating Bypass Valve Sy Reheat Valve gt La Reheat Check Valve Coaxial Condenser Coil Subcooling Solenoid N O x Evaporator Coil Subcool Coil Reheat Coil Compressor E Filter Drier lt Restrictor Check Valve
83. ng for second stage heat timer relay control terminal 6 is powered After a short time delay approximately 15 seconds the system switches the combustion blower to high speed and the 2nd stage gas valve 3 5 w c 8 7 mbar manifold pressure provided the high air pressure switch is proved 11 During heating operation the thermostat pres sure switch and main burner flame are con stantly monitored by the ignition control to assure proper system operation Operation continues on high fire until the 2nd stage thermostat is satisfied opening the 2nd stage contact and de energizes terminal 6 on the timer relay control turning off the 2nd stage gas valve and returning the combustion blower to low speed When the thermostat controller is satisfied and the demand for heat ends the 1st stage valve is de energized immediately the control senses loss of flame and a 30 second post purge occurs at high speed before de ener gizing the combustion blower 10 12 13 11 5 2 Sequence of Operation for Two Stage Fur nace with 250 400 MBH 73 3 117 2 kW Input When system is powered up 24 VAC will be applied to the ignition control ignition control terminals 24VAC R and to the timer relay control The ignition control will reset perform a self check routine flash the diagnostic LED for up to four seconds and enter the thermostat scan standby state The amber light on the timer relay control will be lit indicating it i
84. onnect switch may require blower be rechecked for rotation Refrigerant overcharged Check pressures and subcooling Excess or insufficient oil in compressor crankcase Check oil level on hermetic com pressors check total equivalent feet of piping add oil as recommended Liquid floodback Check TXV setting Refrigerant overcharge refrigerant circuit prob lem Tubing rattle Dampen by taping or clamping bend tubing away from contact where possible Compressor defective Replace compressor 51 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 3 Refrigeration Circuit PROBLEM POSSIBLE CAUSE SOLUTION Noisy Operation High Suction Pressure Air noise Check ductwork Air Velocity too high Chattering contactor Check for adequate control voltage check for shorts or breaks check thermostat check contactor points Tubing rattle Excessive load on evaporator coil Dampen by taping or clamping bend tubing away from contact where possible Check for high entering wet bulb temperature Check for excessive airflow Broken compressor valves Scroll compressors do not have valves Scroll compressors should not be pumped down below 5 PSI Compressor is unloaded Recalibrate unloader pressure switch Leaking check valve Check temperature across check valve Expansion valve not secured to suction line or T
85. ownership of the ADDISON PR Series is moved or transferred This warranty is non transferable SECTION 19 THE ADDISON PR SERIES WARRANTY Addison is not permitted to inspect the damaged equipment and or component parts READ YOUR INSTALLATION OPERATION AND SERVICE MANUAL If you have questions about your equipment contact your installing professional Should you need Replacement Parts or have additional questions call or write Addison 7050 Overland Road Orlando FL 32810 Telephone 1 407292 4400 Fax 1 407 290 1329 www addison hvac com Addison s liability and your exclusive remedy under this warranty or any implied warranty including the implied warranties of merchantability and fitness for a particular purpose is limited to providing replacement parts during the term of this warranty Some jurisdictions do not allow limitations on how long an implied warranty lasts so this limitation may not apply to you There are no rights warranties or conditions expressed or implied statutory or otherwise other than those contained in this warranty Addison shall in no event be responsible for incidental or consequential damages or incur liability for damages in excess of the amount paid by you for the ADDISON PR Series Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages so this limitation or exclusion may not apply to you This warranty gives you specific legal rights an
86. ptions temperature sensors Unit may be controlled in one of the following ways Factory mounted ALC controls by factory Factory mounted DDC controls by others Factory mounted terminal strip for field mounted DDC controls by others e Factory mounted terminal strip for electromechanical controls by factory or by others 14 2 1 Factory Mounted ALC Controls by factory The ALC control option consists of a factory programmed controller and a series of factory wired sensors The controller can operate in a 100 stand alone mode with the use of a handheld keypad display It can also connect to a building automation system 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 can be easily field selected without the need for additional downloads or technician assistance Depending on the options ordered remote sensors may be installed and wired to the controller 14 2 2 Factory Mounted DDC Controls by others Field supplied DDC controls are mounted by the factory per the customer s specifications 14 2 3 Factory Mounted Terminal Strip for Field Mounted DDC Controls by others Field supplied DDC controls can be connected to the factory mounted and factory wired terminal strip 14 2 4 Factory Mounted Terminal Strip for Elec tromechanical Controls by factory or
87. r ADDISON equipment and perform service where necessary using Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through ADDISON representatives Please contact us for any further information you may require including the Installation Operation and Service Manual This product is not for residential use This document is intended to assist licensed professionals in the exercise of their professional judgment 65 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 66 of 67 SECTION 19 THE ADDISON PR SERIES WARRANTY ADDISON WILL PAY FOR Within 12 months from date of purchase by buyer or 18 months from date of shipment by Addison whichever occurs first replacement parts will be provided free of charge for any part of the product which fails due to a manufacturing or material defect Within 60 months from date of purchase by buyer replacement parts will be provided free of charge for any part of the compressor which fails due to a manufacturing or material defect Addison will require the part in question to be returned to the factory Addison will at its sole discretion repair or replace after determining the nature of the defect and disposition of part in question ADDISON Replacement Parts are warranted for the later of 12 months from date of shipment from Addison or the remaining ADDISON PR Series warranty ADDISO
88. ractor and returned to Addison 15 1 Pre Start Checks 15 1 1 Ductwork and Electrical Connections Ensure that the following ductwork and electrical connections have been made Ductwork Supply and return air connections Electrical Line voltage power control voltage power and remote sensor connections 15 1 2 Condensate Drain Units are provided with condensate drain connection s Do not operate unit unless a P Trap is constructed and attached to drain connection See Page 39 Figure 18 Unit must be level or slightly inclined towards drain Drain should pitch down and away from the unit P Trap pipe diameter should be the same as the drain connection diameter Units with high internal and external static pressure drops will require a deeper trap Prime the trap before operating the unit Drainage of condensate directly onto roof is acceptable if permitted by local codes It is recommended that a small drip pad of either stone tar wood or metal be provided to prevent any possible damage to roof Refer to local codes for additional requirements SECTION 15 START UP PROCEDURES FIGURE 18 P Trap cu 4 4 ro oe 102 A Liquid Seal is Required 15 1 3 Supply and Exhaust Fans 1 Make sure electrical power is isolated 2 Check power settings for voltage and verify that they correspond with the data on the motor plate 3 Check that the motor is grounded earthed 4 Check that
89. ration 44 16 6 Collecteur de 44 16 7 Amortissuers 45 16 8 Roue pour le recuperation d nergie 45 16 9 Aerotherme de 5 46 16 10 Aerotherme 47 16211 Fille rr Etre cr pet msn 47 PARTIE 17 Pi ces de rechange 48 PARTIE 18 D pannage cerent 49 18 1 Ventilateur d alimentation 50 18 2 Compresseur nenne 51 18 3 Circuit de r frig ration 53 18 4 Contr le de la vitesse variable pour les ventilateurs de condenseur wana maazzwanaaa 56 18 5 Contr le de la vitesse variable pour les ventilateurs de condenseur s 57 18 6 Roue pour le recuperation d nergie 58 18 7 Aerotherme de 9 5 59 18 8 Aerotherme electrique 60 18 9 Procedures de d marrage pour ADDISON PR S ries aw ia asasi 61 PARTIE 19 Garantie de ADDISON PR S ries 69 2014 Addison Tous droits r serv s
90. rmostat temperature controller is satisfied and the demand for heat ends the heat enable contact opens and the ist stage valve is de energized immediately the control senses loss of flame and a 30 second post purge occurs at high speed before de ener gizing the combustion blower 11 5 4 Sequence of Operation for 20 100 Modu lating Furnace with 250 400 MBH 73 3 117 2 kW Input When system is powered up 24 VAC will be applied to the ignition control ignition control terminals 24VAC R and to the timer relay control The ignition control will reset perform a self check routine flash the diagnostic LED for up to four seconds and enter the thermostat scan standby state The amber light on the timer relay control will be lit indicating it is in the ready position 13 14 SECTION 11 GAS FURNACES Call for Heat 10 If the controller is providing an analog signal 1 Controller provides contact closure on call for between 0 5 and 5 3 VDC to the SC30 control heat the system will continue to run at low speed 2 24 VAC to is supplied to ignition control termi combustion Dower and wilt any stage valve open The modulating valve will be pow nal TH provided limit switch is in closed posi ered proportional to the input voltage signal Hen from the controller and will open or close The control will check that pressure switch con changing the gas manifold pressure Manifold tacts are open ignition control term
91. s tibule housing the gas heater Move gas control knob to Off position 40 of 67 10 11 12 13 14 15 16 Install a tapped fitting for attachment to a manometer or other gauge suitable for 14 0 W C 34 9 mbar in the inlet pressure tap and for 10 0 w c 24 9 mbar in the manifold pres sure tap Wait 5 minutes for any gas to clear out If you smell gas see Step 2 above and correct leak If you don t smell gas or have corrected any leaks go to the next step Turn gas control knob to On position Open all manual gas valves Turn power on at disconnect switch Set thermostat or controller to its highest posi tion to initiate call for heat and maintain opera tion of unit Draft inducer will run for a 15 to 30 second pre purge period At the end of the pre purge the direct spark will be energized and gas valve will open Burners ignite Check for proper inlet and manifold pressures See Page 40 Figure 3 Table 3 Gas Furnace Inlet and Manifold Pressures NG LPG Minimum Inlet 60 400 MBH heaters in w c 5 0 11 0 Minimum Inlet 500 600 MBH heaters in w c 6 0 12 0 Maximum Inlet in w c 13 5 13 5 Manifold in w c 3 4 3 5 10 0 SECTION 16 MAINTENANCE SECTION 16 MAINTENANCE A DANGER Electrical Shock Hazard Severe Injury Hazard Disconnect electric before service Do not enter equipment while in operation More than one disconnect switch may be Equ
92. s and sizes Drill motor and various drill bits Voltmeter Clamp style ammeter Butyl caulk Gauges and accessories Direct expansion and or chilled water gauges and accessories 3 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL SECTION 3 CRITICAL CONSIDERATIONS 3 1 Required Clearances Clearances are the required distances that the unit must be away from objects and other units to allow service access and proper operation of the unit 3 1 1 Service Clearances Minimum clearance for service is 48 121 9 cm on all sides of unit 3 1 2 Ventilation Clearances In order to help ensure proper operation of an airsource unit a 24 61 0 cm clearance for ventilation must be maintained In addition read and follow the additional ventilation clearance guidelines below Do not locate the unit under an overhang or near a wall other equipment that will short circuit hot air to the coil intakes Do not locate unit within 10 3 0 m of exhaust fans or flues Do not locate the unit too close to another unit to allow air recirculation 3 2 Placement Considerations The unit is typically mounted on a curb with ductwork and utility connections usually going through the curb It may also be pad mounted Contact factory for specific instructions if unit is to be mounted in a different way ie on mounting stand Select a location where external water drainage cannot collect around the unit Locate
93. s in the ready position Call for Heat 1 10 Controller provides contact closure 1st and 2nd stage on call for heat 24 VAC to is supplied to ignition control termi nal TH provided limit switch is in closed posi tion The control will check that pressure switch con tacts are open ignition control 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 At end of pre purge period the spark com mences and the 1st stage gas valve is ener gized for the trial for ignition period If the burners fail to light or carryover during a trial for ignition the control will attempt two additional ignition trials If no flame is present at the flame sensor within 10 seconds the spark and gas valve will be de energized A 15 second inter purge period begins and the combustion blower continues to run After the inter purge period another ignition trial will take place If burner fails to light or prove the flame sensor following the two additional trials the control will go into lockout The valve relay in the ignition control will be de energized shutting of the gas valve immediately and the combustion blower following a 30 second post purge period If the thermostat controller is still calling for heat one hour after a lockout occurs the control will automatically reset and initiate a call for heat sequence Burners ignite a
94. t and de s curit 22 11 4 C blage en reer 23 11 5 S quence de 28 PARTIE 13 Aerothermes electriques 32 12 1 Principe de fonctionnement 33 12 2 Contr les de fonctionnement and de s curit 33 12 3 C blage 33 12 4 S quence de fonctionnement 34 PARTIE 13 Electricit 35 13 1 Connections de c blage et lectrique 35 13 2 D connexion lectrique 35 13 3 Consumption du courant 35 13 4 Connections de c blage 35 PARTIE 14 S quence de fonctionnement 36 14 1 Configuration de 36 14 2 Options pour les contr les 37 14 3 S quence de fonctionnement 38 14 4 Options pour les contr les 38 PARTIE 15 Procedures de d marrage 39 15 1 V rifications avant de d marrage 40 PARTIE 16 Maintenance 16 1 G n ral 16 2 Ext rieur de l appareil 16 3 Ventilateurs d alimentation et d vacuation 44 16 4 Ventilateurs de 44 16 5 Composants de circuits de r frig
95. t be placed ina highly visible location on the outside of the equipment i e near equipment s serial plate See label placement drawings on Page 2 Figure 1 for FIGURE 1 Label Placement Drawing label location Avoid placing label on areas with extreme heat cold corrosive chemicals or other elements To order additional labels please contact Addison or your ADDISON independent distributor Part Number Description 0527P 1286 91070002 Logo Label Severe Injury Hazard Label 91070001 Electric Shock Hazard Label 91070004 Fire Hazard Label Applies only to units with supplemental heater 91070005 Fall Hazard Label 91070006 Burn Hazard Label Applies only to units with supplemental heater 91010432 PR Lighting Instruction Label Applies only to units with gas fired supplemental heater 91010431 Improper Installation Warning Label Applies only to units with gas fired supplemental heater BY N 91070002 Severe Injury Hazard Label Applies only to airsource units 2 of 67 SECTION 2 INSTALLER RESPONSIBILITY A WARNING Explosion Hazard Equipment must have access to uncontaminated air at all times Failure to follow these instructions can result in death injury or property damage The installer is responsible for the following To install and commission the unit as well as the fuel and electrical supplies in accordance with
96. t by a person responsible for their safety Children should be supervised to ensure that they do not play with the equipment For additional copies of the Installation Operation and Service Manual please contact Addison Optional gas furnace in this equipment is not designed for use in atmospheres containing flammable vapors flammable dust or chlorinated or halogenated hydrocarbons Recirculated room air may be hazardous if containing flammable solids liquids and gases explosive materials and or substances which may become toxic when exposed to heat i e refrigerants aerosols etc SECTION 1 PACKAGED ROOFTOP UNIT SAFETY 1 1 Description of Operation The PR Series unit is a factory assembled packaged system that can operate within a broad range of ambient conditions and introduce ventilation air into a building at neutral conditions It consists of matched refrigeration and air moving components system controls compressor s evaporator section condensing section and fan s designed to treat 100 outside air and or recirculated air This system has the ability to filter cool heat and or dehumidify air The unit may be provided with several different options and or controls to meet various application requirements including optional hot gas reheat energy recovery wheel supplemental heat gas electric hot water or steam and variable air volume delivery Be sure to read this entire manual before installation
97. ult in death injury or property damage 48 of 67 18 1 Supply Fan SECTION 18 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE SOLUTION Blower motor does not run Damper limit switch not closed or inoperative Repair or replace switch Motor thermal overloads tripped For tripped condition reset Fuses blown or missing Replace External power source lacking Have incoming power lines checked Motor inoperative Repair or replace Blower motor runs but fans do not supply enough make up air Intake filters dirty Replace or clean Obstruction in intake Fan wheel loose on shaft Check dampers for proper opera tion Clear all intake passages of obstructions Reposition and tighten Access doors and panels not closed Close Excessive discharge resistance from Clean filters and or readjust Dirty filters in discharge dampers External dampers Excessive fan noise Fan bearing Replace Fan wheel loose on shaft Reposition and retighten Fan wheel rubbing Loosen setscrews Reposition cone and tighten Fan wheel dirty Clean Loose duct Tighten or reinforce Foreign article in fan or duct Remove 49 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL 18 2 Compressor PROBLEM POSSIBLE CAUSE SOLUTION Compressor Power off loose electrical connections or fuse Check disconnect switch fuses and Wi
98. vely use a wet vac with a wide noz zle on the opposite face of the wheel to collect the water during the washing procedure 2 Disable the drive motor 3 Using standard pressure water do not use a high pressure washer and working from the one side of the wheel wash the wheel with a standard garden nozzle to flush any debris trapped within the flutes of the wheel If desired a mild detergent can also be used to enhance cleaning without affecting the performance of the wheel 16 9 Gas Furnace Gas Line Manual Safety Shut Off Valve Check for gas leaks Check for gas leaks Direct Spark Igniter Check for cracked ceramics excessive carbon residue or erosion of the elec trode Replace as required Gas Valve Check that gas valve seat is not leaking Burners Soft brush or vacuum inside burner at burner ports and at air inlet between burner and manifold pipe to eliminate accumulation of lint and or dirt Heat Exchanger Inspect for cracks sagging bending or distortion Clean with vacuum and or stiff brush Draft Inducer Clean with compressed air or vacuum 45 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL Vent Pipe Terminal Venting must be intact Using a flashlight look for obstructions cracks on the pipe gaps in the sealed areas or corrosion Clean vent terminal Condensation Drain Check for blockages 16 10 Electric Heater Wiring and Wiring Conne
99. y for XL compliant furnace wiring diagrams and information SECTION 11 Gas FURNACES 23 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 12 Wiring Diagram for FM Compliant Two Stage Furnace with 75 200 MBH 21 9 58 6kW Input 14 CUSTOMER PROVIDED COMPONENT CUSTOMER FIELO WIRING p INTERNAL TERMINAL CONNECTION 3 EXTERNAL TERMINAL CONNECTION TR1 TIMER RELAY TERMINAL CONNECTION 2 2 ROLLOUT SWITCH ON HORIZONTAL BURNER TRAY ONLY 24 of 67 SECTION 11 Gas FURNACES FIGURE 13 Wiring Diagram for FM Compliant Two Stage Furnace with 250 400 MBH 73 3 117 2 kW Input IGNITION CONTROL AR SWITCH 40 TRI se 8 ala EA AIR SWITCH Mi i i CUSTOMER PROVIDED COMPONENT CUSTOMER FIELO WIRING INTERNAL TERMINAL CONNECTION EXTERNAL TERMINAL CONNECTION Z ROLLOUT SWITCH ON HORIZONTAL BURNER TRAY ONLY 25 of 67 PR SERIES INSTALLATION OPERATION AND SERVICE MANUAL FIGURE 14 Wiring Diagram for FM Compliant 20 100 Modulating Furnace with 75 200 MBH 21 9 58 6kW Input INTERNAL TERMINAL CONNECTION CUSTOMER PROVIDED COMPONENT XEM UE EE CUSTOMER FIELD WIRING TR1 TERMINAL CONNECTION 26 of 67 SECTION 11 Gas FURNACES FIGURE 15 Wiring Diagram for FM Compliant 20 100 Modulating Furnace with 250 400 MBH 73 3 117 2 kW Input 230 VAC

ADDISON® PR-Series Packaged Rooftop Unit Installation

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ADDISON® PR-Series Packaged Rooftop Unit Installation