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Installation, Operation & Service Manual UHA

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1. Inshot Burners MODEL UHA X S 30 UHA X S 45 UHA X S 60 UHA X S 75 UHA X S 100 UHA X S 125 Orifice Quantity 2 3 4 5 6 7 Natural Gas Orifice Marking 49 49 49 49 46 46 P N 91930049 91930049 91930049 91930049 91930046 91930046 Propane Orifice Marking 56 56 56 1 15 mm 1 25 mm 1 25 mm P N 91930056 91930056 91930056 91930115 91930125 91930125 43 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 15 3 Ignition Electrode and Flame Probe Inshot Burners Burner Compartment Front Views To replace the electrode or flame probe remove the electrical lead and screw Pull out from mounting Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment Description Part Number Spark Electrode 90427411 Automatic Ignition Flame Probe 90439300 Transformer 90436900K Ignition Module 90434008 Inshot Burners UHA X S 30 92000002 Inshot Burners UHA X S 45 92000002 Inshot Burners UHA X S 60 92000002 Inshot Burners UHA X S 75 92000002 Inshot Burners UHA X S 100 92000002 Inshot Burners UHA X S 125 92000002 Limit Switch 90412104 Manual Reset Limit Switch 90412106 UHA 30 75 only 30 0 20 4 8 44 of 51 SECTION 15 REPLACEMENT PARTS 15 4 Heat Exchanger The heat exchanger consists o
2. VENT TO OUTDOORS DONNER VENT Vent to Outdoors Label WARNING Instruction Vent Length Label Cut Hazard Label ACCESS SIDE VIEW INSIDE Location Label WARNING ADVERTISSEMENT Installation Label Switch Label Manual Reset Venting Arrangement Warning Label Description Part Number Logo Label 91031102 Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91010421 Installation Label 91010431 Instruction Location Label 91010433 Lighting Instruction Label 91010425 Venting Arrangement Label 91010426 Manual Reset Switch Label 91010428 Proposition 65 Label 91070015 For separated combustion units only Lighting In structions Label 2 of 51 SECTION 1 HEATER SAFETY Figure 2 UHA X S 60 75 Label Placement FRONT VIEW BACK VIEW VENTTO OUTDOORS DONNER VENT A DEHORS Printed in U S A Imprim aux Etats Unis PINSON Vent to Outdoors Label Logo Label Cut Hazard Label ACCESS SIDE VIEW OUTSIDE AC
3. The UHA X S Series heaters are fully automatic and operate from the external controls fitted on site The only user control at the heater is the Manual Reset Limit Switch See Page 32 Section 12 2 See Page 44 Section 15 3 for manual reset limit switch location inside control housing 12 1 Heater Operation When the heater has been switched on by the thermostat installed on site the main burner will automatically turn on The burner control box will control the safe ignition of the flame All heaters require a constant gas and electricity supply which must not be interrupted during the normal operation of this heater Should overheating occur or the gas supply control system fail to shut off the flow of gas shut off the manual gas valve to the utility heater before shutting off the electrical supply Do not use this utility heater if any part has been under water Immediately call a qualified service technician to inspect the heater and replace any gas control which has been under water 32 of 51 12 2 Common User Controls 12 2 1 Manual Reset Limit Switch A WARNING Explosion Hazard Do not make more than one attempt to restart the heater if manual reset limit switch locks out The vent or heat exchanger may be blocked The fault must be traced and repaired Failure to follow these instructions can result in death injury or property damage On residentially approved models the limit thermostat is loca
4. 17 3 19 1 8 4 4 8 51 6 26 4 1 5 1 4 umaparsii00 in 28 7 22 7 22 3 17 6 18 6 28 0 4 7 86 68 3 311 9 20 3 10 4 0 6 0 5 cm 73 0 57 6 56 6 44 7 47 2 71 1 11 9 21 8 17 3 84 48 51 6 264 15 1 4 umaparsi2s in 28 7 22 7 22 3 17 6 18 6 28 0 47 8 6 68 3 3 1 9 20 3 10 4 0 6 0 5 cm 73 0 57 6 56 6 44 7 47 2 71 1 11 9 21 8 17 3 8 414 8151 6126 4 1 5 1 4 49 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 16 2 General Technical Data Table Model YHAIXIIS UHA XI S UHA XI S UHA X S UHA X S UHA X S 30 45 60 75 100 125 Full Load Amps 120 V A 3 0 3 0 4 1 4 1 5 8 5 8 Air Volume CFM 691 691 1376 1376 1902 1902 Flue and Air Intake Flue and Air Intake Size in cm 4 10 All Models Maximum Straight Flue Air Intake ft m 25 7 6 25 7 6 25 7 6 25 12 2 40 12 2 40 12 2 Weight Net Ibs kg 65 29 5 70 31 8 85 38 6 90 40 8 105 476 110 49 9 Do not exceed the maximum length of flue stated or heater may not operate properly 16 3 Technical Data Table Model UHA X S UHA X S UHA X S UHA X S UHA X S UHA X S 30 45 60 75 100 125 Total Input Btu h x 1000 30 45 60 75 100 125 Total Output Btu h x 1000 24 6 36 9 49 2 61 5 82 102 5 Efficiency 82 All Models Natural Gas Data Inlet Pressur
5. Carrier or other authorities for approval of proposed installation when there is a possibility SECTION 4 CLEARANCES TO COMBUSTIBLES of exposure to combustible airborne materials or vapors 4 2 Clearances to Combustibles Clearances must be as indicated on Page 8 Figure 4 If clearances to combustibles are not indicated then installation clearances apply 7 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 4 Installation Clearances and Clearances to Combustibles Installation Clearances Clearances to Combustibles venting shown Top 1 2 5 cm am Ar 10 _ lt e ak gt Wall 58 4 cm LE 3 m Terminal for adequate air flow access axial fan 10 3 m 16 4 9 m Max Mounting Height v Clearance to Vent 2 5 cm Recommended mounting height varies with heater input Heaters may be mounted at a higher level if destratification 23 58 4 cm minimum is fans are installed necessary for servicing The heater must always be installed at least 6 1 8 m above the floor The vent pipe must have clearance from combustibles by 2 5 cm If installed at low levels where individuals can come in contact with hot heat exchanger components adequate guarding must be provided All distances are minimum clearance requirements for service access airflow and safety 8 of 51 SECTION 5 NATIONAL STANDARDS AND APPLICABLE CODES SE
6. een 5 2 2 Corrosive Chemicals oooooccnnnccinnocccoccnoccconcconnncnncconnnonns 5 2 3 National Standards and Applicable Codes 5 SECTION 3 Critical Considerations sssssensensnensnnnnnnnnnnn 6 3 1 Basic Information 6 3 2 Manufactured Units 6 3 3 Location and Suspension occcincoccconcccocnnonccnonnnananonnninns 6 3 4 Minimum Required Installation Clearances 6 8 5 Ventilation oooooonnnnccnnnnnnnncccnnononinncnccccncnnnncrncnnnnnnnncncn 6 3 6 Gas SUP Vii ainia 6 3 7 Electrical Supply oooooocccnncocncccnonaccconcnnnancanccnnrnnancnnnnnnn 6 BiB VON ices AIR EERERSERERTERE E 6 SECTION 4 Clearances to Combustibles 7 4 1 Required Clearances to Combustibles 7 4 2 Clearances to Combustibles 2 240er 7 SECTION 5 National Standards and Applicable Codes 9 DA Gas COdeS cities 9 5 2 Aircraft Hangars uunrssnuersnnnnenen nennen nennen nenne nenne rennen 9 5 3 Parking Structures and Repair Garages 9 5 4 Electrical oreroraa E ian 9 5 5 Venting eienen a 9 5 6 High Altitude ooooocononcccnnocacnnnnoncnonanancnnrrnnnnornncnnrrnnnnnnno 9 SECTION 6 Heater installation 10 0 1 General os is 10 6 2 Shelf Mounting and Suspension 10 6 3 Wall Mounting uuurs44enr nennen nennen nnnnnnnnnnnnn nennen 10 SECTION 7 Venting en
7. model Use of incorrect pressure switch or disabling pressure switch circuit could cause unsafe condition Failure to follow these instructions can result in death or serious injury SECTION 15 REPLACEMENT PARTS Pull off 3 way connector Spring open plastic clips of mounting cradle Replace with correct type of pressure switch for model The pressure switches are color coded for each pressure setting Carry out a start up after working on or changing a pressure switch See Page 28 Section 11 MODEL UHA X S 30 UHA X S 45 UHA X S 60 UHA X S 75 UHA X S 100 UHA X S 125 Pressure Switch Kit P N 90439804 90439804 90439804 90439804 90439805 90439803 Color Code white white white white blue grey Set Point in wc 0 47 0 47 0 47 0 47 0 55 0 41 Pressure Switch Snap Ring P N 90439850 90439850 90439850 90439850 90439850 90439850 15 8 Ignition Control The control mounts to the heat exchanger plate Pull out ignition cable and wiring from board noting their positions Release the four mounting standoffs Refit in reverse Ensure correct location of ignition cable and all other wiring 15 9 Axial Fan Guard Motor Assembly The axial fan unit for the heater is supplied completely assembled and balanced MODEL UHA X S 30 UHA X S 45 UHA X S 60 UHA X S 75 UHA X S 100 UHA X S 125 Axial Fan Guard 91901103 91901103 91901102 91901102 91901102 91901102 A
8. riels Lire attentivement le manuel d installation d utilisation et d entretien avant d installer ou de r parer cet quipement Linstallation doit tre effectu e par un entrepreneur qualifi dans l installation et l entretien d appareils de chauffage au gaz ou par votre fournisseur de gaz Gh C US Energy Verified CERTIFIED O 2014 Rapid Engineering LLC Rapid Engineering uc UHA Series A rothermes Utilitaires a changeur tubulaire Gamme compacte Manuel d installation d operation et de service Mod les UHAIXIIS 30 45 60 75 100 125 d Rapo Installateur Vouloir prendre le temps de lire et de comprendre ces instructions avant toute installation Linstallateur doit donner un exemplaire de ce manuel au propri taire Propri taire Garder ce manuel dans un endroit s r pour fournir les informations n cessaires au personnel d entretien Rapid Engineering LLC 1100 Seven Mile Road NW Comstock Park MI 49321 Telephone 1 616 784 0500 Fax 1 616 784 1910 Toll Free 800 536 3461 www rapidengineering com P N RP111100FC 11 14 Rev H TABLE OF CONTENTS SECTION 1 Heater Safety 1 1 1 Manpower Requirement 1 1 2 Safety Labels and Their Placement 1 1 3 California Proposition 65 uuussseensnennnennnnnnnnnnnnnn 1 SECTION 2 Installer Responsibility sscsssseeeeeeen 5 21 Wall Tag
9. 7 8 Replacing an Existing Heater in a Venting System When replacing an existing heater in a venting system the venting system may not be properly sized to vent the new heater The following steps must be followed with each piece of equipment connected to the venting system placed in operation while any other equipment connected to the venting system are not in operation 16 of 51 1 Seal any unused openings in the venting system Inspect the venting system for proper size and horizontal pitch as required by the NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code US or Standard CSA B149 1 Natural Gas and Propane Installation Code Canada and these instructions Determine that there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition Close all building doors and windows and all doors between the space in which the piece s of equipment connected to the venting system are located and other spaces of the building Turn on clothes dryers and any exhaust fans such as range hoods and bathroom exhausts so that they shall operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers Follow the lighting instructions Place the equipment being inspected in operation Adjust thermostat so that the equipment will operate continuously For any equipment having a draft hood test for draft hood equipment spillage at the d
10. Drip Leg Cap Union Connection 23 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 10 WIRING 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 All heater models require constant 120 V 10 60 Hz power supply Check heater serial plate for electrical rating for proper circuit sizing For servicing a disconnect switch of proper electrical rating should be installed in the vicinity of the heater All heaters are equipped with thermostat connections suitable to power a 24 V thermostat 10 2 Low Voltage Thermostat with One Heater Heater must be wired and electrically grounded in accordance with local codes In the absence of local codes in accordance with United States refer to National Electrical Code NFPA 70 latest revision Canada refer to Canadian Electrical Code CSA C22 1 Part latest revision 10 1 Positioning Thermostats A room thermostat should be mounted on a vibration free wall or column at a height of approximately 5 1 5 m from the floor to measure the ambient temperature It should be clear of both cold drafts and the direct path of warm air f
11. Flat Washer 95211600 5 16 Lockwasher 96411600 9000 8 Hardware provided to construct mounting bracket assembly only 12 of 51 Figure 8 Vertical Louvers Remove horizontal louvers lt a Push in louver and compfess spring to remoye SECTION 6 HEATER INSTALLATION Install vertical louvers brackets top and bottom with supplied screws Install vertical louvers and springs into brackets with springs at top Description Part Number Description Part Number Vertical Louver Kit UHA X S 30 amp UHA X S 45 12011003K Vertical Louver Kit UHA X S 60 amp UHA X S 75 12011005K Vertical Louver Bracket 11111903 Vertical Louver Bracket 11111903 10 Screw 94311008 10 Screw 94311008 UHA X S 30 45 Vertical Louvers 11111901 Instruction Sheet 91040036 Louver Spring 90901200 Instruction Sheet 91040036 Description Part Number Vertical Louver Kit UHA X S 100 8 UHA X S 125 12011004K Vertical Louver Bracket 11111903 10 Screw 94311008 UHA X S 100 125 Vertical Louvers 11111902 Instruction Sheet 91040036 For models UHA X S 60 and UHA X S 75 horizontal louvers are re used 13 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
12. Type B 1 6 16 cm Minimum Vent 12 31 cm Maximum 6 16cm __ Diameter Storm Collar By Others Single Wall Attach with 3 sheet metal screws y Combustion Air Terminal 12 31 cm Minimum from roof to combustion air terminal NOTE Vent supports not 4 Flashing By Others shown for vertical option Vent Box 2 LEE 6 16 cm NY Vent Air Intake Minimum 12 31 cm Maximum Vertical Option 4 10 10 3 m cm Vent Terminal Maximum Type with Baffle Plate B 1 UHA X S 30 75 only 4 aa Vor N Combustion Airintake Concentric Air Terminal Storm Collar Vent Box By Others Attach with 3 sheet metal screws 12 31 cm Minimum Description Part Number from wall to combustion Concentric Vent Kit UHVK1 1 air terminal Concentric Vent Box Top amp Side Assembly 90504113 Concentric Vent Box Bottom Assembly 90504112 Screw 6 x 3 8 Self Drilling 91119100 4 10 cm Vent Terminal with Baffle Plate 90502102R 6 16 cm Combustion Air Terminal 90502103 20 of 51 SECTION 8 AIR SUPPLY 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 8 1 Separated Combustion Installation When installed as a separated combustion heater UHA X S the air for combustion is
13. are approved without modifications for installations up to 2000 610 m in US and Canada Heaters installed above 2000 610 m must be de rated For installations above 2000 610 m in US consult factory for information on burner de rating For installations from 2000 610 m to 4500 1370 m in Canada high altitude conversion kits are available Heaters installed over 4500 1370 m in Canada are not approved and must be approved by the local or provincial authority 5 4 Electrical The heater must be electrically grounded 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 9 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 6 HEATER INSTALLATION 6 1 General Heaters are designed for installation above 6 1 8 m These heaters must be installed within the heated space Duct delivery systems are not permitted with axial fan units When handling or supporting the heater from below ensure that the weight is taken at the support points The gas or electrical supply lines must not be used to support the heater Do not locate the gas or electrical supply lines directly over the path of the flue pro
14. drawn in from outside the building It is important to ensure that there is adequate space around heater to provide air for the axial air distribution fan 8 2 Building Ventilation Where ventilation is required air must be taken from an outside point where it is not likely to be contaminated or obstructed 8 3 Outside Combustion Air Supply If outside combustion air supply is required separated combustion model UHA X S heaters must be used Caution If the building has a slight negative pressure or corrosive contaminants such as halogenated hydrocarbons are present in the air an outside combustion air supply to the heater is required Seal all combustion air pipe joints The outside air terminal must not be more than 1 31 cm above the vent terminal 8 3 1 Length Requirements Follow the constraints listed on Page 16 Section 76 SECTION 8 AIR SUPPLY 21 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 9 GAS PIPING A WARNING Fire Hazard Connect gas supply according to Figure 15 Do not use gas supply pipe and electrical connections to support heater s weight Gas can leak if not installed properly Failure to follow these instructions can result in death injury or property damage AWARNING Explosion Hazard Leak test all components of gas piping before operation Gas can leak if piping is not installed properly Do not high pressure test gas piping wi
15. installation operation and service Tubing may still be hot after operation Burn Hazard Allow heater to cool before service Edges are sharp Failure to follow these instructions can result in death electric shock injury or property damage Read this manual carefully before installation operation or service of this equipment All components are accessed via the hinged door Opening the door exposes live electrical connections and hot components Prior to any maintenance or service of the heater shut off lockout and tagout the electrical disconnect and gas valve that supplies the unit in accordance with OSHA regulations WARNING Severe Injury Hazard Turn off gas and electrical supply before service Fan can start automatically at any time Failure to follow these instructions can result in severe injury or product damage 11 1 Pre Start Up Checks All pre start up checks must be carried out before lighting the heater Ensure that the heater and all controls are suitable for the gas pressure and electrical supply to which they are to be connected 11 1 1 Louvers Where fitted the air delivery louvers need to be set during start up to give the required air distribution optional vertical louvers 28 of 51 11 1 2 Electrical Checks 1 Check that all site wiring is connected in accordance with the appropriate wiring diagram on Page 25 Section 10 3 11 1 3 Gas Supply All aspects of the gas
16. installation including the gas meter must be inspected tested for gas tightness and purged in accordance with local and national codes Ensure that the air is fully purged from the heater inlet pipe up to the main gas valve inlet test nipple 11 1 4 Mechanical Checks 1 Check that the fan is free to run and delivery louvers are turned to give required air deflection 2 Check that the flue and air intake for separated combustion units is installed in accordance with the instructions in this manual and local regulations See Page 14 Section 7 11 2 Begin Start Up 11 2 1 Before Operating the Heater To ensure that all the controls are in safe working order operate the heater for the first time with the isolating gas valve turned off and power supply turned on 1 Turn off the isolating gas valve 2 Turn up the thermostat above room temperature The automatic ignition sequence will now begin as described on Page 29 Figure 16 There will be no ignition of the burner and lockout will occur which proves the controls are operating correctly SECTION 11 OPERATION AND MAINTENANCE Figure 16 Automatic Burner Control Sequence Burner Sequence for Ignition Control SHUT DOWN Thermostat 24 V oo TIT Flue Blower Cr 30 Seconds Purge 30 Seconds Post Purge P e NO Demos Pressure CT Switch Na NC Ignition Spark QX ts 10 Seconds Flame Signal ATTENTION he MT 30 Seconds Delay EJ 90 Seconds D
17. terrorism or other casualty e Improper service use of replacement parts or accessories not specified by Rapid Engineering LLC e Failure to install or maintain the RAPID UHA Series as directed in the Installation Operation and Service manual e Relocation of the RAPID UHA Series after initial installation e The use of the RAPID UHA Series in a corrosive atmosphere containing contaminants e The use of the RAPID UHA Series in the vicinity of a combustible or explosive material e Any defect in the RAPID UHA 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 RAPID UHA Series is not installed by a contractor qualified in the installation and service of gas fired heating equipment 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 ownership of the RAPID UHA Series is moved or transferred This warranty is nontransferable SECTION 17 RAPID UHA SERIES WARRANTY Rapid Engineering LLC is not permitted to inspect the damaged controller and or component parts READ YOUR INSTALLATION OPERATION AND SERVICE MANUAL If you have questions about your controller contact your installing professional Should you need Replacement Parts or have additional ques
18. unless they have been given supervision or instruction concerning use of the equipment 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 Rapid Engineering LLC 1 1 Manpower Requirements To prevent personal injury and damage to the heater two persons will be required for installation SECTION 1 HEATER SAFETY 1 2 Safety Labels and Their Placement Product safety signs or labels should be replaced by product user when they are no longer legible Please contact Rapid Engineering LLC or your RAPID independent distributor to obtain replacement signs or labels See Page 2 Figure 1 through Page 4 Figure 3 1 3 California Proposition 65 In accordance with California Proposition 65 requirements a warning label must be placed ina highly visible location on the outside of the equipment i e near equipment s serial plate See label placement drawing on Page 2 Figure 1 through Page 4 Figure 3 for label location Avoid placing label on areas with extreme heat cold corrosive chemicals or other elements To order additional labels please contact Rapid Engineering LLC or your RAPID independent distributor 1 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 1 UHA X S 30 45 Label Placement FRONT VIEW BACK VIEW
19. wear on the suspension materials or ceiling See Page 11 Figure 5 Silicone Tubing Ensure tight secure fit on all pressure fittings at pressure switch and vent box Gas Valve Verify that cap covering pressure regulator adjustment screw is secure and has not been tampered with Verify all wiring connections Condensate Drain when installed Flush drain and clear any obstructions Wall Tag If wall tag is present make sure it is legible and accurate Please contact Rapid Engineering LLC or RAPID independent distributor if you need a wall tag See Page 5 Section 2 1 36 of 51 SECTION 14 TROUBLESHOOTING SECTION 14 TROUBLESHOOTING ADANGER A WARNING Electrical Shock Hazard Explosion Hazard Burn Hazard Cut Pinch Hazard Disconnect electric Turn off gas supply to Allow heater to cool Wear protective gear before service heater before service before service during installation operation and service Tubing may still be hot after operation Edges are sharp Heater must be connected to a propery grounded electrica source Failure to follow these instructions can result in death electric shock injury or property damage 37 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 14 1 General START Are gas amp electrical supplies on Turn on supplies UHA 30 75 Press in reset button on manual reset limit switch UHA 100 125
20. 0 75 Only To remove the blower remove screws securing the fan and mounting plate to the vent box To remove the blower from Intake amp the mounting plate remove Exhaust Covers screws Refit in reverse order Mounting Plate To change the vent and air to Flue Fan intake orientation from back fixing screws four to top remove the blower and mounting plate as Air Intake s above Adapter 5 Remove intake and exhaust Mounting Plate covers from top of the to Vent Box heater fixing screws three Rotate the blower mounting plate and gasket clockwise until the flue adapter lines up with the top hole Secure screws Air Intake vertical If applicable remove the air intake adapter fromthe back of the heater and install in the appropriate hole on top Install intake and exhaust covers over the back holes Ensure sealed joints Ensure mounting plate to Veni Box orifice is clear and not fixing screws obstructed three Mounting Plate MODEL UHA X S 30 75 UHA X S 100 125 Flue Blower P N 90710404 90710403 IT IS IMPORTANT THAT ONLY THE CORRECT FLUE BLOWER SPECIFIED FOR EACH MODEL TYPE IS USED WHEN REPLACING THESE ITEMS Carry out a start up after working on or changing an flue blower See Page 28 Section 11 46 of 51 15 7 Pressure Switch A WARNING Carbon Monoxide Hazard Use correct pressure switch specified for each
21. 3 wiring diagram 48 of 51 SECTION 16 SPECIFICATIONS SECTION 16 SPECIFICATIONS TOP VIEW R gt D REAR VIEW LTT LLLI z AS A gt Q lt Door 3 8 16 Captive Nuts Provided Flue UHA X S 30 75 ONLY Optional Position Air Intake UHA X S 30 45 ONLY Optional Position Air Intake UHA X S 60 75 ONLY i OF Optional Position END VIEW Air Intake Terminal EE Strip Electrical 0 Connection Gas Supply 16 1 Dimension Data Models ASA AAA AAA AA A umaparsiso in 28 7 11 9 22 3 17 6 18 6 28 0 48 2 6 7 2 5 8 3 3 1 6 20 3 10 4 0 6 0 5 cm 73 0 30 2 56 6 44 7 47 2 71 1 12 1 6 6 18 3 14 7 8 4 4 1 51 6 26 4 1 5 1 4 umapaisjas in 28 7 11 9 22 3 17 6 18 6 28 0 48 2 6 7 2 5 8 3 3 1 6 20 3 10 4 0 6 0 5 cm 73 0 30 2 56 6 44 7 47 2 71 1 12 1 6 6 18 3 14 7 8 4 4 1 51 6 26 4 1 5 1 4 uHapqrso in 28 7 17 7 22 3 17 6 18 6 28 0 5 0 28 6 8 7 5 3 3 1 9 20 3 10 4 0 6 0 5 cm 73 0 45 0 56 6 44 7 47 2 71 1 12 7 7 1 17 3 19 1 8 4 4 8 51 6 26 4 1 5 1 4 uHaparsizs in 28 7 17 7 22 3 17 6 18 6 28 0 5 0 28 6 8 7 5 3 3 1 9 20 3 10 4 0 6 0 5 cm 73 0 45 0 56 6 44 7 47 2 71 1 12 7 7 1
22. 5 8 Nm NOTE Four suspension points located at top of heater Cone Point x Set Pin Window Clamp Support Points for use during handling Description Part Number Shelf Mounting Bracket Kit 12011000K Shelf Mounting Bracket 11111510 Screw 10 x 1 2 Type AB Phil HWH Z 94311008 11 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 7 Wall Shelf Mounting and Suspension Wall Shelf Mounting Wall Suspension Mounting Shelf 3 8 16 Fasteners Mounting provided by others Brackets 7 Torque to 19 ft lbs 25 8 Nm Fasten to Wall Mounting N Bracket Le mm 4 Wall Mounting Bracket Arm Right amp Left 5 16 x 3 1 2 Bolt 5 16 Flat Washer 5 16 Locknut with Nylon Insert Se Wall Mounting Torque to 11 ft lb 14 9 Nm Bracket Diagonal i Wall Mounting Bracket Vertical os Description Part Number 3 Description Part Number Wall Shelf Mounting Bracket Kit 12011002K Wall Suspension Mounting Bracket Kit 12011001K Wall Suspension Mounting Bracket Kit 12011001K Wall Mounting Bracket Arm Left 111WALL1L Shelf Mounting Bracket Kit 12011000K Wall Mounting Bracket Arm Right 111WALL1R Wall Mounting Bracket Vertical 111WALL2 Wall Mounting Bracket Diagonal 111WALL3 5 16 x 3 1 2 Bolt 97213925 5 16 Lock Nut with Nylon Insert 92114000 5 16
23. CESS SIDE VIEW INSIDE Rating Plate r Label el N Instruction Her Location Label Venting Manual Reset Arrangement Label Switch Label A NT A Proposition 65 Label A WARNING ADVERTISSEMENT Warning Label Installation Label Description Part Number hti Logo Label 91031102 Lighting Instructions Label Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91010421 Installation Label 91010431 Instruction Location Label 91010433 Lighting Instruction Label 91010425 Venting Arrangement Label 91010426 Manual Reset Switch Label 91010428 Proposition 65 Label 91070015 For separated combustion units only 3 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 3 UHA X S 100 125 Label Placement FRONT VIEW Instruction Location Label BACK VIEW TE anuet VENTTO OUTDOORS DONNER VENT A DEHORS aux Etats Unis PIN 81010427 Vent to Outdoors Label A WARNING N AWARNING WARNING ADVERTISSEMENT DANGER Ven
24. CTION 5 NATIONAL STANDARDS AND APPLICABLE CODES 5 1 Gas Codes 5 5 Venting The type of gas appearing on the serial plate must be the type of gas used Installation must comply with national and local codes and requirements of the local gas company United States Refer to NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code Canada Refer to CSA B149 1 Natural Gas and Propane Installation Code The venting must be installed in accordance with the requirements within this manual and the following codes United States Refer to NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code Canada Refer to CSA B149 1 Natural Gas and Propane Installation Code 5 6 High Altitude 5 2 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 Natural Gas and Propane Installation Code Standard CSA B149 1 latest revision 5 3 Parking Structures and Repair Garages Installation in garages must be in accordance with the following codes United States Refer to 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 Natural Gas and Propane Installation Code Standard CSA B149 1 latest revision These heaters
25. E UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 10 4 UHA X S Ladder Wiring Diagram 120 VAC FLAME SENSOR Flame IGNITION MODULE Limit Switch Limit Switch UHA 300 350 400 Only ELECTRODE Spark j Manual Reset Limit Switch CT UHA 30 75 Only THERMOSTAT CONNECTION IMPORTANT For field wiring into service junction box or if any of the original wire supplied with the heater must be replaced it must be replaced with wiring material having a temperature rating of at least 105 C 221 F and 600 volts For supply connections use No 14 AWG or larger wires 26 of 51 SECTION 10 WIRING 10 5 Electrical Connection to the Heater ss Burner D gt E iin Connect wires together L Junction B with suitable approved N UNGT BOX wire connectors Ground 1 Green to Ground White to N Black to L Su gt x Y IMPORTANT Junction box is not provided with heater Conduit can also be attached directly to heater with wire junction made within the heater cabinet 27 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 11 OPERATION AND MAINTENANCE ADANGER Electrical Shock Hazard Explosion Hazard Turn off gas supply to heater before service Disconnect electric before service Heater must be connected to a properly grounded electrica source A WARNING Cut Pinch Hazard Wear protective gear during
26. FOR YOUR SAFETY If you smell gas Open windows DO NOT try to light any appliance DO NOT use electrical switches DO NOT use any telephone in your building Extinguish any open flame Leave the building Immediately call your local gas supplier after leaving the building Follow the gas supplier s instructions If you cannot reach your gas supplier call the Fire Department A WARNING Fire Hazard Keep all flammable objects liquids and vapors the minimum required clear ances to combustibles away from heater Some objects will catch fire or explode when placed close to heater Failure to follow these instructions can result in death injury or property damage A 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 contractor qualified in the installation and service of gas fired heating equipment or your gas supplier C US Energy Verified 2014 Rapid Engineering LLC Bu Engineering uc UHA Series Tubular Unit and Utility Heaters Low Profile Range Installation Operation amp Service Manual Models UHA X S 30 45 60 75 100 125 Installer Please take the time to read and understand these instructions prior to any installation Inst
27. SECTION 7 VENTING A WARNING Carbon Monoxide Hazard Heaters must be vented outdoors Heaters must be installed according to the installation manual Failure to follow these instructions can result in death or injury 7 1 Changing Vent and Air Intake Orientation The heater is sold with rear horizontal vent and air intake connections as standard only separated combustion models have air intake connection If vertical vent and air intake connections are required follow the instructions on Page 46 Section 15 6 7 2 Venting This heater must be vented in accordance with the rules contained in this manual and with the following national 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 Natural Gas and Propane Installation Code Any portion of vent pipe passing through a combustible wall must have a listed thimble to conform with the above codes The bottom of the vent or air intake terminal shall not be located less than 1 3 m above grade level The vent shall not terminate less than 7 2 1 m above grade where located adjacent to public walkways Vent terminal must be installed at a height sufficient to prevent blockage by snow and building materials protected from degradation by flue gasses Vent terminal must be beyond any combustible overhang Secure all joints with corrosion res
28. Table on Page 50 Section 16 3 for inlet pressure requirement Do not continue to adjust the regulator if the pressure is not changing 30 of 51 TOP VIEW Outlet Pressure Part Number 90032505 90032506 Description Gas Valve 60 125 NG Gas Valve 60 125 LP If the inlet pressure is too low to allow correct burner pressure setting then the gas inlet pressure must be corrected before completing the start up 11 2 2 2 Check Gas Rate 1 After burner pressure adjustment allow the heater to operate for at least 15 minutes and then re check settings Adjust pressure setting if necessary 2 Check gas flow rate at gas meter Turn off heater and electrical supply 4 Remove the manometer and refit all covers to the valve and tighten the screw of the outlet pressure tap es 11 3 Pressure Switch The pressure switch is factory pre set for each model and is not adjustable 11 4 Turning Off the Heater Set the thermostat to the OFF position or lowest setting and the main burner will stop The fan will continue to run until it is stopped automatically by the fan thermostat Do not use a disconnect switch for control of heater Disconnect switch will turn off the fan Heat exchanger could be damaged Warranty will not cover damage to the heat exchanger if operated improperly Only use the disconnect switch for turning off heater for service or during off season 11 5 External Controls External
29. Wait 10 15 minutes for limit switch to cool Does fan stop running Is ignition control showing a 4 flashes LED code Fan and limit switch are operating normally Yes Yes Replace temperature limit switch Burner has locked out due to ignition failure Use Troubleshooting for Automatic Ignition Burner Systems section to test burner Is ignition control showing a 2 flashes LED code Yes Use Troubleshooting for Flue Blower section to test fan Does the flue blower run The limit switch has With external controls i e thermostat on does the burner continue through the heating cycle No Has burner Locked Out Limit Switch Figure Use Troubleshooting for Automatic Ignition Burner Systems section to test burner Ensure proper air flow clearance for axial fan Open louvers slightly Replace axial fan if it does not operate If problems persist contact Rapid Engineering LLC at www rapidengineering com Heater Operating TROUBLESHOOT ENDS NO 38 of 51 tripped See Manual Reset No Replace limit switch SECTION 14 TROUBLESHOOTING 14 2 Troubleshooting For Automatic Ignition Burner Systems START Are gas amp electrical supplies on Turn on supplies Are external controls i e Thermostat on Turn on controls UHA 30 75 Pre
30. a minimum annual inspection of heater must be done by a contractor qualified in the installation and service of gas fired heating equipment Read this manual carefully before installation operation or service of this equipment Not all heaters are approved for residential installation Check the heater s silver rating plate for residential approval status Heaters that do not have residential approval must not be installed in residential spaces These instructions the layout drawing local codes and ordinances and applicable standards that apply to gas piping electrical wiring venting 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 Health 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 local distribution conditions nature of gas and pressure and adjustment of the equipment are compatible This heater must be applied and operated under the general concepts of reasonable use and installed using the 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
31. allation of Carbon Monoxide Detectors At the time of installation of the side wall horizontal vented gas fueled equipment the installing plumber or gasfitter shall observe that a hard wired carbon monoxide detector with an alarm and battery back up is installed on the floor level where the gas equipment is to be installed In addition the SECTION 7 VENTING installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling building or structure served by the side wall horizontal vented gas fueled equipment It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors e In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and battery back up may be installed on the next adjacent floor level In the event that the requirements of this subdivision can not be met at the time of completion of installation the owner shall have a period of thirty 30 days to comply with the above requirements provided however that during said thirty 30 day period a battery operated carbon monoxide detector with an alarm shall be installed Approved Carbon Monoxide Detectors Each carbon monoxide detector as required i
32. aller 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 Rapid Engineering LLC 1100 Seven Mile Road NW Comstock Park MI 49321 Telephone 1 616 784 0500 Fax 1 616 784 1910 Toll Free 800 536 3461 www rapidengineering com P N RP111100NA 11 14 Rev H POUR VOTRE SECURITE Si vous sentez une odeur de gaz 1 Ouvrir les fen tres N essayer pas d allumer un appareil N utiliser pas d interrupteurs lectriques N utiliser pas de t l phone dans votre b timent Eteindre flamme nue Quitter le b timent Apres avoir quitt le b timent appelez immediatement votre fournisseur local de gaz Suivre les instructions du fournisseur de gaz Si vous ne pouvez pas joindre votre fournisseur de gaz appeler le service d incendie 4 AVERTISSEMENT Risque d incendie Garder tous les objets liquides ou vapeurs inflammables la distance minimale de Punit de chauffage requise avec les mat riaux combustibles Certains objets prendront feu ou exploseront s ils sont plac s proximit de l unit de chauffage Le non respect de ces instructions peut entrainer la mort des blessures corporelles ou des dommages materiels 4 AVERTISSEMENT Linstallation le r glage la modification la r paration ou la maintenance inadapt peut entrainer la mort des blessures ou des dommages mat
33. arbon Monoxide Hazard Electrical Shock Hazard Explosion Hazard Fire Hazard Use only genuine RAPID replacement parts per this installation operation and service manual Failure to follow these instructions can result in death electric shock injury or property damage See warnings and important information on Page 15 1 Gas Valve Burner Components Follow instructions on Page 43 Section 15 2 to All serviceable burner parts are accessed by the remove gas valve manifold hinged door on the side of the heater Replace in reverse order Verify that the gas flow direction of the valve is correct Use a minimum amount of gas seal on the thread joint Check that all the joints are leak free Reset gas valve See Page 30 Section 11 2 2 IT IS IMPORTANT THAT ONLY THE CORRECT GAS VALVE IS USED WHEN REPLACING THESE CONTROLS Description Part Number Gas Valve NG Models UHA X S 30 45 90034500 Gas Valve LP Models UHA X S 30 45 90034600 Gas Valve NG Models UHA X S 60 125 90032505 Gas Valve LP Models UHA X S 60 125 90032506 42 of 51 15 2 Burner Injectors D Flame Probe Inshot Burners Orifices Ignition Electrode SECTION 15 REPLACEMENT PARTS Remove four screws to remove manifold Ensure gas tight fitting of injectors Ensure correct alignment with burners Ensure all pipe joints are gas tight Manifold Burner Side Panel Unscrew Orifice
34. at exchanger Units shall have a minimum of 82 thermal efficiency The standard unit shall consist of a non separated combustion design with an aluminized heat exchanger and single stage gas valve Design and heat exchanger alternatives shall be offered as follows e Separated Combustion S A separated combustion unit shall consist of a sealed enclosure with hinged door Combustion air inlet on rear of heater allows for intake venting from outside of heated space to be attached Combustion flue gases shall be ducted from outside heated space by ductwork connected to unit s outlet flange Stainless Steel Heat Exchanger X A stainless steel heat exchanger unit shall consist of heat exchanger tubes heat exchanger tube supports and heat exchanger tube plates produced of 409 stainless steel Air inlet temperatures below 40 F 4 4 C are not recommended for this application 3 3 Location and Suspension All models e Must be installed indoors e Must be installed in a level position with horizontal discharge e May be mounted on a shelf of non combustible material using shelf mounting brackets See Page 11 Figure 6 and Page 12 Figure 7 for details e May be suspended from above See Page 11 Figure 5 or from wall brackets of sufficient strength to support the heater as listed in the Technical Data Table on Page 50 Section 16 2 e Drop rods must be a minimum of 3 8 diameter mild steel Four suspension points 3 8 nuts ar
35. ater Vertical and Horizontal Vent Termination 17 Figure 11 Standard Vented Heater Common Vertical Vent TOMAN econo ea Anea aaea 18 Figure 12 Separated Combustion Heater Vertical and Horizontal Vent Termination 19 Figure 13 Concentric Vent Box 19 Figure 14 Concentric Vertical and Horizontal Vent Termination Separated Combustion Heater 20 Figure 15 Gas Connection 23 Figure 16 Automatic Burner Control Sequence 29 Figure 17 Gas Valve for Models UHA X S 30 45 29 Figure 18 Gas Valve for Models UHA X S 60 125 30 Figure 19 Manual Reset Limit Switch 33 Figure 20 LED Diagnostic Codes 33 There are references in this manual to various trademarks All trademarks mentioned herein whether registered or not are the property of their respective owners Rapid Engineering LLC 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 HEATER SAFETY Your Safety is Important to Us This symbol is used throughout the manual to notify you of possible fire electrical or burn hazards Please pay special attention when reading and following the warnings in these sections Installation service and at
36. bility of supplies parts or power No person is authorized to assume for Rapid Engineering LLC any other warranty obligation or liability LIMITATIONS ON AUTHORITY OF REPRESENTATIVES No representative of Rapid Engineering LLC 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 Rapid Engineering LLC s duly authorized Executive Officer 51 of 51 Rapid OWNER WARRANTY REGISTRATION CARD ngineering uc Mail or Fax to Rapid Engineering LLC 1100 Seven Mile Road NW e Comstock Park MI 49321 Phone 1 616 784 0500 e Fax 1 616 784 1910 Toll Free 800 536 3461 e www rapidengineering com About the Owner Name Address City State Zip Code Phone Fax E mail About the Installer Name Address City State Zip Code Phone Fax E mail Purchased From if different than installer Name Address City State Zip Code Phone Fax E mail About your Heater Model Serial Fuel Installation Date Type of Installation check one o Automotive o Manufacturing o Warehouse o Recreational o Aircraft o Public Building o Office o Retail o Agricultural o Other Installation Code and Annual Inspections All installation and service of RAPID equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Rapid Engineering LLC a
37. ccnccconccionnnonccnonnnonccnarcnancnnno 31 11 6 Complete Start Up ursssesnsensnensnnnsnnnnnnnnnnen nn 31 11 7 Instruction to the User 31 SECTION 12 User Instructions 32 12 1 Heater Operation 32 12 2 Common User Controls 32 12 3 Lighting Instructions 33 12 4 Simple Troubleshooting 33 SECTION 13 Servicing een 34 13 1 Servicing Instructions 34 13 2 Burner Maintenance 34 13 3 Fan Motor Assembly Maintenance 34 13 4 Heat Exchanger Maintenance 35 13 5 Gas Valve Maintenance 35 13 6 Flue Blower 22um444044n Han nnnnnnnnnnannnnrnnnnnnnnnnn nn 35 13 7 Venting and Air Intake Pipe 35 13 8 Maintenance Checklist 35 SECTION 14 Troubleshooting 37 A an 38 14 2 Troubleshooting For Automatic Ignition Burner SYSTEMS neues ns aed 39 14 3 Troubleshooting for Flame Supervision System 40 14 4 Troubleshooting for Gas Valves 41 14 5 Troubleshooting for Flue Blower 41 SECTION 15 Replacement Parts 42 15 1 Gas A aaea en aea eaaa N 42 15 2 Burner Injectors 43 15 3 Ignition Electrode and Flame Probe 44 15 4 Heat Exchanger eeeccceeseeeeenereseneeeeeeeeeeeeneeeseneeees 45 15 5 Louver and Louve
38. ck Park MI 49321 Telephone 1 616 784 0500 Fax 1 616 784 1910 Toll Free 800 536 3461 D manuals Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through RAPID representatives Please contact us for any further information you may require including the Installation Operation and Service Manual These products are not approved for residential use except for models UHA S 30 UHA S 75 O 2013 Rapid Engineering LLC All rights reserved No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any means graphic electronic or mechanical including photocopying recording taping or information storage and retrieval systems without written permission of Rapid Engineering LLC www rapidengineering com Printed in U S A P N 91040033 Rev F
39. cm for every 1 3 m For 4 10 cm common vent an approved vent cap P N 90502102 must be used For 6 15 cm common vent an approved vent cap P N 90502103 must be used For common vertical venting of more than two heaters See Page 18 Figure 11 A vent shall not extend less than 2 6 m above the highest point where it passes through a flat roof of a building 7 6 Length Requirements If using vent lengths greater than 10 3 0 m condensation will form in the vent pipe Insulation and additional sealing measures high temperature silicone at all seams are required The entire vent should be insulated with foil faced fiberglass insulation 1 2 thick 1 1 2 density minimum 7 6 1 Maximum Vent Lengths Table Model UHA X S S0 125 of Elbows 30 ft 9 1 m 1 25 ft 76 m 2 20 ft 6 1 m 3 15 45 m 4 10 ft 3 0 m 5 7 7 Vent Material Vent material may be single wall 26 ga minimum galvanized steel or equal thickness stainless steel Completely seal all joints refer to Page 14 Section 73 If penetrating a combustible wall or roof a listed thimble with 2 5 cm clearance must be used Where local codes permit a single section of type B 1 vent material may be used at the roof or wall penetration instead of a thimble Ensure vent manufacturer s clearance from vent material is maintained Seal annular space of the type B 1 vent as well as all joints in the remaining vent
40. controls may include time switch interlock switch room thermostat and frost thermostat Operate each control to ensure that they function correctly Set the switches if fitted and thermostat s to the users requirements 11 6 Complete Start Up Ensure that all covers are fitted correctly and all test points are properly sealed 11 7 Instruction to the User Explain the controls of the heater to the user including how to turn it on and off using the controls equipped on site Give this manual to the user Ensure that the user is shown and understands the importance of maintaining clearances to combustibles on Page 8 Figure 4 installer responsibility on Page 5 Section 2 and user instructions on Page 32 Section 12 and all warnings defined in this manual SECTION 11 OPERATION AND MAINTENANCE 31 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 12 USER INSTRUCTIONS ADANGER Electrical Shock Hazard Explosion Hazard Turn off gas supply to heater before service Disconnect electric before service Heater must be connected to a properly grounded electrica source A WARNING Cut Pinch Hazard Wear protective gear during installation operation and service Burn Hazard Allow heater to cool before service Tubing may still be hot after operation Edges are sharp Failure to follow these instructions can result in death electric shock injury or property damage
41. ducts from the heater The heater must be installed in a location that is readily accessible for servicing The heater must be installed in accordance with clearances to combustibles as indicated on the wall tag and this manual 6 2 Shelf Mounting and Suspension A WARNING Crush Hazard Use 3 8 threaded rod minimum Failure to follow these instructions can result in death injury or property damage For typical suspension See Page 11 Figure 5 For typical shelf mounting on existing shelf See Page 11 Figure 6 6 3 Wall Mounting For typical suspension See Page 12 Figure 7 Wall mounted heaters blowing parallel to the wall can only be installed with the service door away from the wall The wall mounting brackets must be attached to a suitable wall using all mounting holes Screw sizes less than 3 8 may not be used In order for the wall mounting brackets to adequately carry the weight of the heater it must be installed according to best building practices 10 of 51 Figure 5 Suspension Methods D S Channels Unistrut Nut Z t 1 L Washer IL 1 a Nut 3 8 16 Threaded N Rod 3 8 16 1 Threaded Rod Nut Washer s i Shelf Mounting Brackets Existing cabinet screws must be re used SECTION 6 HEATER INSTALLATION Ensure all 3 8 16 suspension hardware is torqued to a minimum of 19 ft Ibs 2
42. e 5 0 in wc Min 14 in wc Max Burner Pressure in wc 3 7 3 6 3 7 3 5 2 8 3 1 LPG Propane Data Inlet Pressure 12 0 in wc Min 14 in wc Max Burner Pressure in wc 9 4 9 6 9 6 10 0 8 8 9 3 50 of 51 SECTION 17 RAPID UHA SERIES WARRANTY RAPID ENGINEERING LLC WILL PAY FOR Within 24 months from date of purchase by buyer or 27 months from the date of shipment by Rapid Engineering LLC whichever comes first replacement parts will be provided free of charge for any part of the product which fails due to a manufacturing or material defect Rapid Engineering LLC will require the part in question to be returned to the factory Rapid Engineering LLC will at its sole discretion repair or replace after determining the nature of the defect and disposition of part in question RAPID Replacement Parts are warranted for a period of 18 months from date of shipment from Rapid Engineering LLC or the remaining RAPID UHA Series warranty RAPID ENGINEERING LLC 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 dueto e Improper installation operation or maintenance e Misuse abuse neglect or modification of the RAPID UHA Series in any way e Use of the RAPID UHA Series for other than its intended purpose e Incorrect gas or electrical supply accident fire floods acts of God war
43. e To provide access for servicing e To provide the owner with a copy of this Installation Operation and Service Manual e To never use heater as support for a ladder or other access equipment and never hang or suspend anything from heater e To ensure there is adequate air circulation around the heater and to supply air for combustion ventilation and distribution in accordance with local codes e To ensure the heater is placed in an approved application 2 1 Wall Tag A laminated wall tag is included with the heater as a permanent reminder of the safety instructions and the importance of the required clearances to combustibles Affix the tag by peeling off the backing of the adhesive strips on the rear surface and position the tag on a wall near the heater A copy of the wall tag P N 91040033 is illustrated on the back cover Know your model number and installed configuration Model number and installed configuration are found on the heater serial plate and throughout the Installation Operation and Service Manual SECTION 2 INSTALLER RESPONSIBILITY 2 2 Corrosive Chemicals A CAUTION Product Damage Hazard Do not use heater in area containing corrosive chemicals Refer to appropriate Material Safety Data Sheets MSDS Failure to follow these instructions can result in product damage Rapid Engineering LLC cannot be responsible for ensuring that all appropriate safety measures are undertaken prior to
44. e located on top of the heater e Must be installed in a manner which allows access to all serviceable components 3 4 Minimum Required Installation Clearances Clearances around the heater and vent must be as indicated on Page 8 Figure 4 and Page 14 Section 7 to ensure access for servicing and correct operation 6 of 51 3 5 Ventilation It is important to ensure that there is adequate air space around the heater to supply air for combustion ventilation and distribution in accordance with local and national code on Page 14 Section 7 3 6 Gas Supply It is important that the gas supply pipe is sized correctly to provide the inlet pressure as stated on the heater serial plate The gas supply pipe and electrical connections must not support any of the heater s weight See Page 22 Section 9 3 7 Electrical Supply A permanent 120 V 1 60 Hz electrical supply is required for the main electrical power The heater also requires suitable controls in accordance with See Page 24 Section 10 3 8 Vent Choose heater orientation to allow for the proper location of the vent Each heater must be fitted with a correctly sized sealed vent system If vented horizontally no other equipment may be connected to the vent See Page 14 Section 7 SECTION 4 CLEARANCES TO COMBUSTIBLES 4 1 Required Clearances to Combustibles AWARNING Fire Hazard Keep all flammable objects liquids and vapors the minimum required clearances to comb
45. elay gt A Purge time begins at pressure switch change over Start Gas Valve a e EA AAA AAA Axial Fan OS TU mar If at any stage the flame fails the control will retry for ignition The control has four trials for ignition before a one hour lockout Signals Output By Control ee Figure 17 Gas Valve for Models UHA X S 30 45 Pressure Regulator Gas Outlet Description Part Number Outlet Pressure Gas Valve 30 45 NG 90034500 Gas Valve 30 45 LP 90034600 29 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 18 Gas Valve for Models UHA X S 60 125 END VIEW Gas Inlet Inlet Pressure 11 2 2 Start Up the Gas Valve All Gases 11 2 2 1 Check Burner Gas Pressure 1 Remove the plug in the outlet burner pressure test point and connect a pressure tap and a manometer 2 With the burner firing measure the pressure on the manometer To adjust the burner pressure remove the regulator cover from the valve and turn the regulator adjustment screw to set the required burner pressure as stated in the Technical Data Table for the correct gas and model on Page 50 Section 16 3 NOTE If the correct burner pressure cannot be reached then check the inlet pressure to the valve with the burner firing See Technical Data
46. es a 2 flashes LED code es If problems persist contact Rapid Engineering LLC at www rapidengineering com Heater Operating TROUBLESHOOT ENDS NO For optimum heater performance use only replacement parts sold and supplied by Rapid Engineering LLC Conduct start up procedure as shown on Page 28 Section 11 39 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 14 3 Troubleshooting for Flame Supervision System To measure flame current connect a O 50 uA DC meter in series with the flame probe If the meter reads negative values then reverse the test leads START Connect a DC ammeter in series with the flame probe Use General Troubleshooting section to trace the fault Is the flame present and at least 1 uA DC flame current Is the connecting lead damaged Is the flame probe damaged or touching earthed components Is there a current flowing in the flame probe circuit with no flame present Repair or replace as Yes required Is inlet burner gas pressure correct Is live and neutral polarity correct Is flame probe circuit correct Does lockout occur when there is a flame present Replace ignition control Repair or replace as required If problems persist contact Rapid Engineering LLC at www rapidengineering com Heater Operating TROUBLESHOOT ENDS NOTE Minimu
47. f 51 SECTION 7 VENTING Figure 12 Separated Combustion Heater Vertical and Horizontal Vent Termination 12 31 cm Minimum from air intake to vent termination 24 62 cm gt Minimum from roof IE lt Air Intake Termination 12 31 cm Minimum from roof to bottom of air intake NOTE Vent supports not shown NOTE UHA X S 100 125 elbows will be supplied for vertical option Vent gt Listed thimble 24 62 cm Vertical through Minimum from wall Option combustible wall to vent termination UHA X S 30 75 only N Vent Termination 12 31 cm Minimum from d AY air inlet to vent m Air Intake termination A Air IntakeTermination Model Air Intake Vent Diameter Part Number d 12 31 cm Minimum from UHAIX S 30 125 4 10 cm 90502102 wall to bottom of air intake Figure 13 Concentric Vent Box Toward Outside 6 15 cm Single Wall Inlet Air Pipe Concentric By Others Vent Box Combustion Air to Heater Use 3 sheetmetal gt screws equally Use 3 sheetmetal Exhaust spaced around joint ae aay i spaced around collar from Heater 4 10 cm Single p Wall Vent Pipe By Others 19 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 14 Concentric Vertical and Horizontal Vent Termination Separated Combustion Heater a Vent Terminal 4 10 cm LD with Baffle Plate
48. f a six pass design with 1 5 outer diameter aluminized steel 409 stainless steel tube The tube plates are made of aluminized steel 409 stainless steel The tube supports are made of aluminized steel 409 stainless steel 15 5 Louver and Louver Springs Horizontal Vertical Louvers Louvers Install Vertical Louver Brackets top and bottom with supplied screws Install Vertical Louvers and Springs into Brackets with Springs at Top For models UHA X S 60 and UHA X S 75 horizontal louvers are re used UHA X S UHA X S UHA X S Description Part Number 30 45 60 75 100 125 Vertical Louver Kit UHA X S 60 12011005K Horizontal Louvers P N 11111900 8 UHA X S 75 Spring P N 91901200 Vertical Louver Bracket Quantity 5 UHA X S 60 75 Vertical Louvers Instruction Sheet 10 Screw Description Description Part Number Vertical Louver Kit UHA X S 30 8 UHA X S 45 a Description Part Number Vertical Louver Bracket Vertical Louver Kit UHA X S 100 amp 12011004K UHA X S 30 45 Vertical Louvers UHA X S 125 Louver Spring Vertical Louver Bracket Instruction Sheet UHA X S 100 125 Vertical Louvers 10 Screw Instruction Sheet 10 Screw 10 Screw 45 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 15 6 Flue Blower Vertical Installation for UHA X S 3
49. fety Rapid Engineering LLC recommends that a qualified contractor conduct at a minimum annual inspections of your RAPID equipment and perform service where necessary using only replacement parts sold and supplied by Rapid Engineering LLC Annual Fall Start Up operation Follow entire start up procedure at this time and check control settings and The Vicinity of the Heater Do not store or use flammable objects liquids or vapors near the heater Immediately remove these items if they are present See Page 6 Section 3 Vehicles and Other Objects Maintain the clearances to combustibles Do not hang anything from or place anything on the heater Make sure nothing is lodged in between the heat exchanger or in the louvers Immediately remove objects in violation of the clearances to combustibles See Page 7 Section 4 Vent Pipe Terminals Venting must be intact Using a flashlight look for obstructions cracks on the pipe gaps in the sealed areas or corrosion The area must be free of dirt and dust Remove any carbon deposits or scale using a wire brush If the vent terminal has a screen built in remove any dirt dust or deposits from the screen See Page 14 Section 7 through Page 21 Section 8 Cabinet Exterior After installation touch up scratches Periodic painting should be done there after as required Warning labels and logo labels should be legible and accu rate Please co
50. fore service during installation Heater must be operation and service connected to a properly grounded electrica source Tubing may still be hot after operation Edges are sharp Failure to follow these instructions can result in death electric shock injury or property damage 13 1 Servicing Instructions IMPORTANT Check all gas pipes and pipe joints to After start up the heater will require maintenance to ensure there are no cracks or gas leaks Any cracks be carried out at a minimum annually If the heater in the pipes or pipe joints must be repaired is used in a dirty or dusty area more frequent maintenance may be required IMPORTANT Inspect all suspended components and hardware Ensure that they are in good A WARNIN G condition properly tightened and corrosion free 13 2 Burner Maintenance 1 Open the hinged door and remove from the hinges Set door aside See Page 43 Section 15 2 2 Remove burner side panel Electrode and flame probe should remain attached See Page 44 Section 15 3 Turn off gas and electrical supply before 3 Remove burner assembly from cabinet via four SERVICE screws two on top and two on bottom Clean any deposits from the main burner which may have formed in the injectors or venturi of the Severe Injury Hazard Fan can start automatically at any time Failure to follow these instructions can burner result in severe injury or product damage 4 Check condition of ignition elect
51. formed by a contractor qualified in the installation and service of equipment sold and supplied by Rapid Engineering LLC and conform to all requirements set forth in the RAP and all applicable governmental authorities pertaining to the installation service operation and labeling of the equipment To help facilitate optimum performance and safety Rapid Engineering LLC recommends that a qualified contractor conduct at a minimum annual inspections of your RAPID equipment and perform service where necessary using only replacement parts sold and supplied by Rapid Engineering LLC For installation at elevations above 2000 610m the appliance shall be derated 4 for each 1000 305m of elevation above sea level Engineering uc thoroughly before installation operation or service Fire Hazard Keep all flammable objects liquids and vapors the minimum required clearances to combustibles away from heater Some objects will catch fire or explode when placed close to heater Failure to follow these instructions can result in death injury or property damage Clearances to Combustibles Models 30 125 Models 150 400 30 125 1 2 5 cm 0 0 cm 1 2 5 cm 23 58 4 cm 2 5 cm 150 400 6 15 cm 3 8 cm 31 79 cm 6 15 cm 2 5 cm Models Top Bottom Right Left Vent Clearance needed for servicing Rapid Engineering LLC 1100 Seven Mile Road NW Comsto
52. hich must be investigated by a contractor qualified in the installation and service of gas fired heating equipment on gt SECTION 12 USER INSTRUCTIONS 12 4 1 Simple Troubleshooting Burner Faults If the burner fails to ignite for any reason it will retry for ignition four trials total After four unsuccessful ignition trials the control will put the heater into lockout for one hour Lockout should not occur during normal operation of the heater and indicates there is a fault condition which must be corrected There is an LED light on the ignition control that flashes codes to assist in fault correction See Page 33 Figure 20 for LED indication codes Figure 20 LED Diagnostic Codes LED INDICATION FAULT MODE Slow Flash Normal Operation No call for heat Fast Flash Normal Operation Call for heat 2 Flashes Ignition Lockout No flame detected 3 Flashes Airflow Fault Pressure switch open or closed 4 Flashes Temperature Limit or Manual Reset Limit Switch Open 5 Flashes Flame Sense Error Gas valve not energized Steady On Internal Control Failure 33 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 13 SERVICING ADANGER A WARNING Electrical Shock Hazard Explosion Hazard Burn Hazard Cut Pinch Hazard Disconnect electric Turn off gas supply to Allow heater to cool Wear protective gear before service heater before service be
53. 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 ele ments 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 heater components will be greatly reduced An out side air supply must be provided to the burners whenever the presence of these compounds is suspected Warranty will be invalid if the heater is exposed to halogenated hydrocarbons 2 3 National Standards and Applicable Codes All equipment must be installed in accordance with the latest revision of the applicable standards and national codes This refers also to the electric gas and venting installation Note Additional standards for installations in public garages aircraft hangars etc may be applicable See Page 9 Section 5 5 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 3 CRITICAL CONSIDERATIONS 3 1 Basic Information UHA X S heaters have automatic ignition burners for ON OFF operation only 3 2 Manufactured Units A gas fired power vented unit heater with tubular he
54. istant 8 x 3 8 sheet metal screws For single wall venting pressure sensitive aluminum tape or silicone sealant must be used to seal all joints Aluminum tape shall have a minimum temperature rating of 400 F 204 C and meet SMACNA AFTS 100 73 standards High temperature silicone sealant must have a minimum temperature rating of 480 F 250 C 14 of 51 7 2 1 United States Requirements Vent must terminate at least 3 9 m above any forced air inlet located within 10 3 1 m Vent must terminate at least 4 1 2 m below 4 1 2 m horizontally from or 1 3 m above any door operable window or gravity air inlet into any building NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code specifies a 4 1 2 m horizontal vent terminal clearance from gas and electric meters regulators and relief equipment 7 2 2 Canadian Requirements The vent shall not terminate within 6 1 8 m of a mechanical air supply inlet to any building The vent shall not terminate within 3 9 m of a window or door that can be opened in any building any non mechanical air supply inlet to any building or of the combustion air inlet of any other piece of equipment 7 3 Vent Installation Maintain clearances to combustibles at all times for safety Clearances are the required distances that combustible objects must be away from the heater to prevent serious fire hazard See Page 8 Figure 4 For vented units the vent mus
55. m flame probe current 1 yA DC Typical flame probe current 3 5 pA DC 40 of 51 14 4 Troubleshooting for Gas Valves START Is gas pressure at inlet of the valve correct for gas type Note pressure found Does gas pressure at outlet of the valve rise when valve turns on Does gas pressure at outlet of valve return to zero or lower when valve turns off Valve Operating TROUBLESHOOT ENDS 14 5 Troubleshooting for Flue Blower START Does flue blower run automatically when there No is a call for heat Does blower turn on and off while burner is firing Yes continously Blower Operating TROUBLESHOOT ENDS NO SECTION 14 TROUBLESHOOTING Fault elsewhere Correct pressure problem Valve or ignition control faulty Replace with one of correct type Valve faulty Replace with one of correct type If problems persist contact Rapid Engineering LLC at www rapidengineering com Correct power supply problem Blower motor faulty Replace with correct type Check blower motor leads for loose connections If problems persist contact Rapid Engineering LLC at www rapidengineering com For optimum heater performance use only replacement parts sold and supplied by Rapid Engineering LLC Conduct start up procedure as shown on Page 28 Section 11 41 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL SECTION 15 REPLACEMENT PARTS ADANGER A WARNING C
56. n accordance with the above provisions shall comply with NFPA 720 and be ANSI UL 2034 listed and IAS certified Signage A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating piece or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS Inspection The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless upon inspection the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5 08 2 a 1 through 4 7 5 Vertical Venting Vertically vented standard vented heaters can be common vented up to 4 heaters For vent lengths greater than 10 3 0 m condensation will form Insulation is recommended and condensation drains may be desired Venting through the top of the heater cabinet is not recommended if vent lengths are longer than 10 3 m UHA X S 30 75 only In this case vent from 15 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL the rear of the heater cabinet then run the vent vertically and use a condensate drain at the bottom of the vertical vent Vent pipe must be sloped 1 4 6
57. n the manual gas valve in the heater supply line 3 Turn on electric power to the heater 4 Set the thermostat to desired setting above ambient temperature The automatic starting sequence begins TO TURN OFF THE HEATER 1 Turn the thermostat time switch to OFF or lowest setting The burner will turn OFF immediately but fans will continue to cool heat exchanger until the fan thermostat switches off IF THE HEATER WILL NOT OPERATE TO ENSURE YOUR SAFETY FOLLOW THESE INSTRUCTIONS TO SHUT DOWN YOUR HEATER 1 Set the thermostat to off or the lowest setting 2 Turn off electric power to the heater 3 Turn off the manual gas valve in the heater supply line 4 Call your installer contractor qualified in the installation and service of gas fired heating equipment Installation Clearances APP Optional separated combustion concentric venting shown u Top Roof Terminal Il 30 125 1 2 5 cm 18 46 cm 10 3 m 16 4 9 m Models Top Rear Max Mounting Height 150 400 6 15 cm 24 61 cm 18 5 5 m 20 6 1 m Heaters can be mounted higher if destratification fans are installed See Installation Operation and Service Manual for specific mounting height recommendations NOTE Venting directly from top of heater not applicable on Models 150 400 Installation Code and Annual Inspections All installation and service of RAPID equipment must be per
58. nd conform to all requirements set forth in the RAPID manuals and all applicable governmental authorities pertaining to the installation service operation and labeling of the equipment To help facilitate optimum performance and safety Rapid Engineering LLC recommends that a qualified contractor conduct at a minimum annual inspections of your RAPID equipment and perform service where necessary using only replacement parts sold and supplied by Rapid Engineering LLC Further Information Applications engineering and detailed guidance on systems design installation and equipment performance is available through RAPID representatives Please contact us for any further information you may require including the Installation Operation and Service Manual These products with the exception of the models UHA X S 30 75 are not approved for residential use O 2014 Rapid Engineering LLC All rights reserved No part of this work covered by the copyrights herein my be reproduced or copied in any form or by any means graphic electronic or mechanical including photcopying recording taping or information storage and retrieval systems without written permission of Rapid Engineering LLC Printed in the U S A Attach this information to the wall near the RAPID heater Rapid Read the Installation Operation and Service Manual OPERATING INSTRUCTIONS 1 STOP Read all safety instructions on this information sheet 2 Ope
59. nns 14 7 1 Changing Vent and Air Intake Orientation 14 72 VONUIAG waist A 14 73 Vent Installation 14 7 4 Horizontal Venting oocoonocccnnnononccononcnnnnannonarnnonnnnnnnnnos 15 75 Vertical Venting 15 7 6 Length Requirements 2uumsersnnersnnnnnnnnnen nennen 16 77 Vent Material 16 7 8 Replacing an Existing Heater in a Venting System 16 SECTION 8 Air Supply mines 21 8 1 Separated Combustion Installation 21 8 2 Building Ventilation 22smser nenn nenne nennen nn nennen 21 8 3 Outside Combustion Air Supply 21 SECTION 9 Gas Piping nenr 22 9 1 Connections 22 SECTION 10 Wiring es een 24 10 1 Positioning Thermostats usersnesnrsnnnnnsnnnnnnnnnne nenne 24 10 2 Low Voltage Thermostat with One Heater 24 10 3 UHA X S Internal Wiring Diagram 25 10 4 UHA X S Ladder Wiring Diagram 26 10 5 Electrical Connection to the Heater 27 SECTION 11 Operation and Maintenance cseeee 28 11 1 Pre Start Up Checks 28 11 2 Begin Start Up ooococncccicccnccnncnnonccnonnnanccnnncnnnnnnnnccnnn 28 11 3 Pressure Switch ooooccncccnncninncconcnnocinnncnnncnnncnnrnnccnncnn 30 11 4 Turning Off the Heater 30 11 5 External Controls 0ooocccc
60. ntact Rapid Engineering LLC or RAPID independent distributor if you need replacement warning labels or logo labels See Page 2 Figure 1 through Page 4 Figure 3 35 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Combustion Air Intake Pipe Intake pipe and inlet must be intact Look for obstructions cracks on the pipe gaps in the sealed areas or corrosion The area must be free of dirt and dust Clean and reinstall as required See Page 21 Section 8 Heat Exchanger Make sure there are no cracks Make sure there is no sagging bending or distortion Clean or replace as required Gas Line and Shut off Valves Check for gas leaks See Page 22 Section 9 Burner Observation Window Make sure it is clean and free of cracks or holes Clean and replace as required Flue Blower Scroll Wheel and Motor Compressed air or a vacuum cleaner may be used to clean dust and dirt Inshot Burners and Orifices Clear obstructions even spider webs will cause problems Carefully remove any dust and debris from the burner Direct Spark Igniter Replace if there are cracked ceramics excessive carbon residue or erosion of the electrode The electrode gap should be 1 8 3 2 mm Thermostat There should be no exposed wire or damage to the device or wiring See Page 24 Section 10 Suspension Points Make sure the heater is hanging securely Look for signs of
61. oof Listed thimble through combustible wall Vertical Flashing Option Horizontal By Others UHA X 30 75 only U Option 27 Vent Termination v 12 31 cm Minimum from wall to vent termination Model Vent Diameter Part Number UHA X 30 125 4 10 cm 90502102 17 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL Figure 11 Standard Vented Heater Common Vertical Vent Termination SIDE VIEW Type B vent cap 7 18 cm or 8 20 cm may be used These are not available from the manufacurer I TNT 2 6 m Type B Vent Pipe Roof Flashing Mimmu Roof The last section of vent pipe passing __ gt through the roof or wall may be Type N Approved Thimble B vent pipe All other vent materials If Applicable in the building must be single wall vent pipe Single Wall Pipe po 4 10 cm Single Wall Pipe 4 10 cm u S of open area of individual vents TOP VIEW Requirements e Maximum of four heaters can be commonly vented through the roof e Heaters must be of the same BTU output e Heaters must be controlled by a common thermostat e Connections to a common stack must be positioned to avoid opposition between streams of combustion gas 18 o
62. pplier An isolating valve and union connection should be used and fitted into the supply adjacent to the heater A minimum 1 8 NPT plugged tapping accessible for test connection must be installed immediately upstream of the gas supply connection to the heater For suspended heaters an approved metal flexible connection between the isolating valve and the heater may be used To reduce pressure loss use one pipe size larger than the heater gas connection IMPORTANT The complete installation must be purged and tested for gas soundness in accordance with local and national codes Caution Do not high pressure in excess of 1 2 psi 14 in wc test the gas piping with the burner connected Close manual shut off valve during any pressure testing equal to or less than 1 2 psi 14 in wc Check the pipe and tubing ends for leaks before placing heating equipment into service When checking for gas leaks use a soap and water solution never use an open flame SECTION 9 Gas PIPING Figure 15 Gas Connection A CAUTION Product Damage Hazard Hold gas nipple securely with pipe wrench when attaching flexible gas connector Failure to follow these instructions can result in product damage Option A Stainless Steel Flexible Gas Connector e Do not twist flexible gas connector e Ensure all joints are gas tight Option B Medium or Heavy Gauge Pipe Gas Connector 2 wa
63. r Springs 45 15 6 Flue Blower Vertical Installation for UHA X S 30 75 Olinda Hie tev dona 46 15 7 Pressure Switch 47 15 8 Ignition Control 47 15 9 Axial Fan Guard Motor Assembly 47 15 10 Limit Switches oooonnncccinncnnnonnnccnoconnncnnncnnnrnnnnccnncn 48 SECTION 16 Specifications 49 16 1 Dimension Data 49 16 2 General Technical Data Table 50 16 3 Technical Data Table 50 SECTION 17 RAPID UHA Series Warranty uunssnesnnnenenns 51 2014 Rapid Engineering LLC All rights reserved No part of this work covered by the copyrights herein may be reproduced or copied in 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 Rapid Engineering LLC Printed in U S A TABLE OF FIGURES Figure 1 UHA X S 30 45 Label Placement 2 Figure 2 UHA X S 60 75 Label Placement 3 Figure 3 UHA X S 100 125 Label Placement 4 Figure 4 Installation Clearances and Clearances to Combustibles uc scene ain 8 Figure 5 Suspension Methods nennen 11 Figure 6 Shelf Mounting Methods 11 Figure 7 Wall Shelf Mounting and Suspension 12 Figure 8 Vertical Louvers 220u 222nmu4nnnnn nennen nnannennannn nennen 13 Figure 9 Vent and Roof Detail 17 Figure 10 Standard Vented He
64. raft hood relief opening after five minutes of main burner operation Use the flame of a match or candle After it has been determined that each piece s of equipment connected to the venting system properly vents when tested as outlined above return doors windows exhaust fans fireplace dampers and any other gas burning piece s of equipment to their previous conditions of use If improper venting is observed during any of the above tests the venting system must be corrected by a contractor qualified in the installation and service of gas fired equipment or your local gas supplier If the venting must be resized use appropriate tables in US Appendix G of NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code US or Standard CSA B149 1 Natural Gas and Propane Installation Code Canada to determine minimum size All vent corrections must be in accordance with the appropriate local codes and the NFPA 54 ANSI Z223 1 latest revision National Fuel Gas Code US or Standard CSA B149 1 Natural Gas and Propane Installation Code Canada SECTION 7 VENTING Figure 9 Vent and Roof Detail Vent Terminal Flashing or Rain Collar Listed Thimble 2 5 cm Air Gap to Combustible lt Vent Material gt NOTE Vent supports not Vent Termination chown NOTE UHA X 100 125 ee be dest 12 31 cm supplied for vertica Minimum from roof option to vent termination Listed thimble through combustible r
65. rode and flame probe Clean off any deposits which may have IMPORTANT Prior to any maintenance or service of formed check condition of ceramic insulators the heater shut off lockout and tagout the electrical Replace as required See Page 44 Section disconnect and gas valve that supplies the unit in 15 3 accordance with OSHA regulations After any maintenance or repair work always test fire the 13 3 Fan Motor Assembly Maintenance heater in accordance with the start up instructions The main fan bearings are permanently sealed and on Page 28 Section 11 through Page 31 Section do not need lubrication Before cleaning turn off gas 11 7 to help ensure all safety systems are in working and electrical supply Remove the fan and use a order before leaving the heater to operate Minor small brush or duster to clean the fan blades from faults may be traced by using the troubleshooting each side Replace fan when done See Page 47 charts on Page 37 Section 14 through Page 41 Section 15 9 Section 14 5 34 of 51 13 4 Heat Exchanger Maintenance The heat exchanger will remain clean unless a problem has developed with combustion Inspect the heat exchanger Look for signs of overheating at the front tubes which may indicate burner over firing or persistently low air flows 13 5 Gas Valve Maintenance No regular maintenance is required on this device To change gas control valves See Page 42 Section 15 1 Do not repair or disassemble gas
66. rom the heater Avoid mounting thermostat on outside walls or in areas directly exposed to radiant heat or sunlight Install wall tag in a visible location near thermostat See Page 5 Section 2 1 for wall tag details 10 1 1 Fan Control The heater s axial fan can be used during the off season for air circulation A low voltage programmable thermostat with a fan switch P N 90425400 must be used For thermostat connection details See Page 24 Section 10 2 Gas Electrical Supply Supply loo E Supply lectrical Supply Terminal Strip ES Terminal Strip ig lt P 24 Volt 1 D Thermostat with Fan Control 24 Volt Thermostat lt w gt Heating Only 24 of 51 10 3 UHA X S Internal Wiring Diagram AXIAL FAN UHA 300 1350 400 ONLY BLOWER PRESSURE SWITCH LIMIT IGNITION SWITCH MODULE SENSE Black ELECTRODE E Black IMPORTANT SECTION 10 WIRING All ICT 24 VAC TO THERMOSTAT RED MANUAL FAN INPUT FROM THERMOSTAT GREEN HEAT DEMAND INPUT FROM THERMOSTAT WHITE COMMON SIDE OF TRANSFORMER THERMOSTAT INPUT FIELD SUPPLIED For field wiring into service junction box or if any of the original wire supplied with the heater must be replaced it must be replaced with wiring material having a temperature rating of at least 105 C 221 F and 600 volts For supply connections use No 14 AWG or larger wires 25 of 51 UHA Low PROFIL
67. ss in reset button on manual reset limit switch UHA 100 125 Wait 10 15 minutes for limit Yes switch to cool Does fan stop running Is ignition control showing a 4 flashes LED code Yes Fan and limit switch are operating normally Replace temperature limit switch Does flue blower run Is 120 V supply at fan connections Flue blower faulty replace No Yes Burner control faulty or wiring connections faulty Repair or replace as required Check for too much vent air inlet duct Check for blockage in vent and combustion air circuit Check for faulty air pressure switch Check pressure switch hoses for leaks or cracks Do not attempt to circumvent pressure switch circuit to place unit in operation See Pressure Switch section for details Does air pressure switch change over Wait 30 40 seconds Does ignition spark operate Is ignition lead okay and connected Is spark electrode okay Ignition control faulty replace See Ignition Control section No Yes Is the gas valve operating To test valve See Troubleshooting for Gas Valves section Does the flame light No Replace valve Trace fault in supervision system See Troubleshooting for Flame Supervision System section Is the flame current at least 1 uAmp DC when the flame ignites Is ignition control showing Y
68. t terminate outside of the building Vents must be fully sealed and correctly sized for the model If the vent passes through a wall or ceiling of combustible material it must be enclosed by a listed thimble and be separated from the thimble by at least a 2 5 cm air gap For separated combustion models vents and air intakes must be a fully sealed system and correctly sized for the model Vent should be assembled as detailed on Page 17 Figure 9 through Page 20 Figure 14 The joints between the vent terminal and the roof or wall must be properly sealed Vents and air intakes must be adequately supported so that the heater does not bear the weight of the pipes For vent termination See Page 17 Figure 9 through Page 20 Figure 14 7 3 1 Standard Vented Heaters Models UHA X 30 125 The vent must be fitted with a low resistance terminal See Page 17 Figure 9 through Page 18 Figure 11 Standard vented heaters do not allow outdoor air intake for combustion air 7 3 2 Separated Combustion Heaters Models UHA X S 30 125 The heaters are designed to be installed as separated combustion heaters The vent and air intake are run as separate pipes to the wall or roof terminals See Page 19 Figure 12 As an option the vent and air intake are run as separate pipes to a concentric vent box and a concentric vent air intake pipe penetrates the wall or roof See Page 19 Figure 13 and Page 20 Figure 14 For seperated combustion installa
69. ted inside the hinged access door of the heater See Page 44 Section 15 3 This control protects against excessive heat build up inside the burner compartment Figure 19 Manual Reset Limit Switch To reset manual reset limit switch press reset button NOTE To reset the switch must be cool Part Number 90412106 Description Manual Reset Limit Switch 12 3 Lighting Instructions 12 3 1 To Turn On Heater 1 Ensure that the electrical and gas supplies to the heater are on Check that the on site controls are ON IMPORTANT The thermostat setting must be above the ambient temperature for the heater to operate 2 The automatic firing sequence will begin as described on Page 29 Figure 16 The heater will now operate automatically under the control of the on site controls 12 3 2 To Turn Heater Off Set the thermostat to the OFF position The burner will turn off immediately The fan will continue to run for 90 seconds To restart turn the thermostat on or above room temperature 12 4 Simple Troubleshooting Some possible reasons for the heater not operating are Gas supply not ON Electricity supply not ON The time and or temperature controls are not ON A limit switch may have operated This may be caused by an interruption of the electrical supply failure of the distribution fan or vent or heat exchanger blockage If a temperature limit switch persistently trips there is a fault w
70. th heater connected Failure to follow these instructions can result in death injury or property damage A gas meter is connected to the service pipe by the gas supply company An existing meter should be checked preferably by the company to ensure that the meter is adequate for the rate of gas supply required Installation pipes must be fitted in accordance with local and national codes Pipes of smaller size than the heater inlet gas connection should not be used Gas lines must meet applicable codes United States Flexible stainless steel gas hose US models is certified per the standard for connectors for gas applications ANSI Z21 21 CSA 6 10 latest revision 22 of 51 Canada Rubber type 1 gas hose Canadian models is certified as being in compliance with the standard for elastomeric compostite hose and hose couplings for conducting propane and natural gas CAN CGA 8 1 latest revision 9 1 Connections Connect the heater to the gas supply ensuring that the final connections are as follows e Gas supply pipe work is run in medium or heavy gauge tubing in compliance with local and national codes Meter and service must be large enough to handle all the burners being installed plus any other connected load The gas pipe which feeds the system must be large enough to supply the required gas with a maximum pressure drop of 1 2 in wc When gas piping is not included in the layout drawing contact the local gas su
71. ting Arrangement Label A DANGER Proposition 65 ge Label Installation Label Description Part Number Logo Label 91031102 Cut Hazard Label 91010430 Vent Length Label 91039505 Vent to Outdoors Label 91010427 Warning Label 91010429 Rating Plate Label 91010421 Installation Label 91010431 Instruction Location Label 91010433 Lighting Instruction Label 91010425 Venting Arrangement Label 91010426 Proposition 65 Label 91070015 For separated combustion units only Cut Hazard Label Vent Length Label ACCESS SIDE VIEW INSIDE Lighting Instructions Label 4 of 51 SECTION 2 INSTALLER RESPONSIBILITY The installer is responsible for the following e To install the heater as well as the gas and electrical supplies in accordance with applicable specifications and codes Rapid Engineering LLC recommends the installer contact a Local Building Inspector or Fire Marshal for guidance e To use the information given in a layout drawing and in the manual together with the cited codes and regulations to perform the installation e To install the heater in accordance with the clearances to combustibles e To furnish all needed materials not supplied as standard equipment e To plan location of supports vents and air intakes
72. tion the vent and air intake must be fitted with an individual and correctly sized sealed system and the vent and air intake must terminate at approved wall and roof terminals Seperated combustion units may not be common vented 7 4 Horizontal Venting Horizontally vented heaters must be individually vented no common venting Vent pipe must be sloped 6 cm downward for every 1 3 m away from heater For vent lengths greater than 10 3 0 m condensation will form Insulation is recommended and condensation drains may be desired For vents pitched up towards the vent terminal place the condensation drain within 10 3 0 m of the heater In noncombustible walls only vent terminal P N 02537801 1P may be used For 4 10 cm vents in either combustible or noncombustible walls use vent terminal P N 90502100 or equivalent insulated vent terminal Follow the manufacturer s instructions for proper installation Instead of an insulated vent terminal a listed thimble with 2 5 cm air gap may be used with a 4 10 cm vent cap P N 90502102 In the State of Massachusetts the following regulations apply to horizontally vented heaters certified for installation in structures used in whole or in part for residential purposes UHA 30 75 only and where the side wall exhaust vent termination is less than seven 7 feet above finished grade in the area of the venting including but not limited to decks and porches Inst
73. tions call or write Rapid Engineering LLC 1100 Seven Mile Road NW Comstock Park MI 49321 Telephone 1 616 784 0500 Fax 1 616 784 1910 Toll Free 800 536 3461 www rapidengineering com Rapid Engineering LLC 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 Rapid Engineering LLC 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 RAPID UHA 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 and you may also have other rights which vary from jurisdiction to jurisdiction Rapid Engineering LLC 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 unavaila
74. ustibles away from heater Some objects will catch fire or explode when placed close to heater Failure to follow these instructions can result in death injury or property damage Clearances are the required distances that combustible objects must be away from the heater to prevent a fire hazard Combustibles are materials that may catch on fire and include common items such as wood paper rubber fabric etc Maintain clearances to combustibles at all times for safety Clearances for all heater models are located on the serial plate of the heater and throughout the manual Check the clearances on the serial plate to make sure the product is suitable for your application and the clearances are maintained Read and follow the safety guidelines below Keep gasoline or other combustible material including flammable objects liquids dust or vapors away from this heater or any other equipment Do not spray aerosols in the vicinity of this heater The stated clearances to combustibles represents a surface temperature of 90 F 50 C above room temperature Building materials with a low heat tolerance such as plastics vinyl siding canvas tri ply etc may be subject to degradation at lower temperatures It is the installer s and owner s responsibility to assure that adjacent materials are protected from degradation Maintain clearances from heat sensitive equipment and workstations Consult local Fire Marshal Fire Insurance
75. valve Replace faulty gas valves with replacement parts sold and supplied by Rapid Engineering LLC 13 6 Flue Blower The flue blower should not require maintenance However if the air pressure switch is causing burner lockout then remove the flue blower from the vent box by unscrewing the screws atthe mounting plate Screw quantity will vary by model size Remove the screws attaching the mounting plate to the fan inlet See Page 46 Section 15 6 Ensure that the fan is free to run and that the fan wheel is clean SECTION 13 SERVICING 13 7 Venting and Air Intake Pipe Inspect all venting and air intake pipe Ensure that all seams are sealed and suspension points secure Repair suspension points if any part of the venting or combustion air pipe is sagging Check to make sure any insulation is not missing or in poor condition Replace as necessary Check all venting and air intake components to ensure they are in good condition gas tight and corrosion free 13 8 Maintenance Checklist Installation Code and Annual Inspections All installations and service of RAPID equipment must be performed by a contractor qualified in the installation and service equipment sold and supplied by Rapid Engineering LLC and conform to all requirements set forth in the RAPID manuals and all applicable governmental authorities pertaining to the installation service operation and labeling of the equipment To help facilitate optimum performance and sa
76. xial Fan Motor 90600104 90600104 90600105 90600105 90600106 90600106 Axial Fan Blade 90709004 90709003 90709002 90709001 90709001 90709001 47 of 51 UHA Low PROFILE UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL 15 9 1 Fan Removal and Replacement Use only genuine replacement parts sold and A WARNING supplied by Rapid Engineering LLC 15 10 Limit Switches 15 10 1 Removal and Replacement 1 Remove the electrical connections to the switch 2 Unscrew the two screws securing the switch Fit anew switch with two screws Turn off gas and electrical supply before 4 Reconnect the electrical connections and test service operation Severe Injury Hazard 3 Fan can start automatically at any time Failure to follow these instructions can result in severe injury or product damage Remove the mounting hardware Remove wiring conduit and wires to controls Description Part Number Quantity Axial Fan UHA X S 30 12011910 1 Axial Fan UHA X S 45 12011911 1 Axial Fan UHA X S 60 12011920 1 Axial Fan UHA X S 75 12011921 1 Axial Fan UHA X S 100 and UHA X S 125 12011922 1 15 9 2 To Replace the Fan Assembly To replace the fan assembly reverse the procedure shown above e Check that the fan blades are free to rotate before turning on the power to the fan e Strictly comply with the color code of the fan wires to ensure correct operation See Page 25 Section 10

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