State Industries SUF 100 THRU 250 User's Manual
Contents
1. 50 000 Stuhr 15 12 any other appiance for appliances above 100 000 Bul 50000 Bu USA Te he above 50 000 Blur 15 KW Vertical clearance to ventilated soft located ciesrance toa stove the terminal within 3 bos les ttem 3 fet 91 cm above i within D store he terminal within 12 inches a0 om aes oem rectal ar supply pipi rii boc E eet 51 em rom te erter ne of the terminat Clearance above Clearance 7 paved sidewaik er 12 inches 30 em 12 0em ate avenar ioca feet 2 19 mit 7 toot 2 13 mit on pubic propery Clearance under oso tes 60 em M veranda porch deck 12inches 30 om 12 inches 30 om rbatony biis 18 inches 45 18 inches 45 em In accordance with the current CSA B149 1 Natural Gas and Propane Installation Code 2 In accordance with the current ANS 2223 1 NFPA 54 National Fuel Gas Code Avent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings Permitted only if veranda porch deck or balcony is fully open on a minimum of two sides beneath the floor Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer s installation instructions Servicing should only be performed by a Qualified Service Agent 42. Manifold Supply gas gas Pressure pressure 0 WC 0 kPa Note Tubing shown on pressure connections is installed for manometer connections It is not supplied with the water heater WARNING Do not attempt adjustments on this gas valve unless you have a combustion analyzer Contact the help line listed on the water heater for assistance 34 Servicing should only be performed by a Qualified Service Agent CONTROLS GAS VALVE ORIFICE CHART SUF 300 400 The gas control valve has a built in field adjustable pressure regulator The gas valve for the SUF Natural gas model is shown below This is a 24V solenoid operated gas valve Manual Gas Control Knob Low Gas Pressure Switch 24V Solenoid connection Refer to the replacement parts information at the back of this manual for part numbers for Natural and LP gas valves for all SUF 300 and 400 models ORIFICE CHART SUF 300 400 Model 300 400 Natural 274 314 LP 189 219 Servicing should only be performed by a Qualified Service Agent CONTROLS GAS VALVE ORIFICE CHART SUF 500 The gas control valve has a built in field adjustable pressure regulator The regulator may be adjusted by removing the cap screw marked regulator The adjustment screw is underneath The gas valve for the SUF 500 Natural gas model is shown below This is a 24V solenoid operated gas valve For Series 100 and 101 Man
3. Fault History ACTION Press the DOWN key to scroll through the fault history If you select a specific fault or warning you may press the VIEW button to view details regarding this fault DISPLAY Fault History Flame Detect Error A9 2 mins ago Low Gas A6 mins ago Blocked Exhaust Vent A8 1 hr 2 mins ago Flame Detect Error A9 Viewing Information About the Water Heater The control for this water heater monitors many different aspects of the water to ensure safe and optimal operation Much of the information monitored is available to view in two areas of the control The first is the Heater Status and the second is Heater Information These items can be selected through the desktop menu In these menus detailed information about the water heater and the current status of specific conditions can be found Servicing should only be performed by a Qualified Service Agent 27 CONTROL SEQUENCE TYPICAL ALL MODELS TYPICAL SEQUENCE 28 T When the control is powered it should display waiting for connection and UIM v2 06 The manufacturer and unit model will be next The next display will include water temperature temperature setting and heater status This number may change as software revisions are made The control performed selected system diagnostic checks immediately upon power up This includes confirming the proper state of the air gas switches and ECO limit device and pow
4. continuing to monitor the internal tank water State Ultraforce SUF 130 500 temperature and the state of other system devices If the temperature drops below the Tank Temperature 103 F set point value less differential the control will Operating Set Point 120 F automatically return to step 2 and repeat the Status Heating entire operating cycle s Menu Help Bow ericon Check wark the box indicates indicates the blow er power o the proving switch contacts blow or are made Fiama icon indicates burner is ignited and that flame has been sensed Servicing should only be performed by a Qualified Service Agent CONTROL SEQUENCE FLOW CHART Control displays model temperature setting and status If all checks are passed and there is a call for heat the blower is energized for a pre purge cycle The control performs internal system checks and determines tank temperature is below set point If checks are not passed the control will display a fault or waming The control will When the pre store an error purge is complete history to show power is applied to what fault occurred the igniter for and the time Warm up elapsed since the fault If the control fails to see flame the blower will continue to run for a 30 second Inter purge There will be 3 trials for ignition before a fault is declared At the c
5. PVC elbows with mesh screens are provided with each unit Both elbows are to be used in direct vent applications The screens are provided to keep vermin and large debris from entering the intake air and exhaust vent runs Servicing should only be performed by a Qualified Service Agent CONTROL OVERVIEW Interaction with the water heater controller is through an LCD display called the Universal Interface Module UIM This screen is also referred to as the desktop or desktop menu Up and down buttons and three operation buttons allow navigation through the control menus and to make adjustments to the water heater Operation of the three lower buttons is defined immediately above them on the screen While the water heater is operating the user interface will display the desktop screen if there are no active faults or warnings An example of this screen is shown below The first temperature on this screen is the temperature of the water inside the tank The second temperature on this screen is the Operating Set Point The Operating Set Point is the temperature at which the water heater will maintain the water inside the tank The third line on the screen is a text description of the Operational State of the water heater The operating state of the water heater is also indicated graphically by status icons SUF 130 500 A Tank Temperature 103 F uP Operating Set Point 120 F Status Heating 088 60 State Ultra
6. 724 40122 110133 5 THREE 3 724 35 107 105 32 FOUR 4 724 30 9 1 100 30 5 FIVE 5 724 95 29 SIX 6 724 90 27 4 VENTING TABLES SUF 300 400 500 CONCENTRIC VENTING Concentric venting allows for a single wall penetration For multiple water heater installation using this vent practice any additional vents of this type may be located 12 on centerline to either side of the first vent or 12 on centerline vertically above the first vent Concentric kits may be extended to a maximum allowable length of 5 feet 152 cm Schedule 40 PVC pipe must be carefully measured and cut to the desired length Do not use couplings when extending the length of a concentric termination The use of couplings will restrict the flow through the termination and may cause improper combustion 3 DIAMETER PVC VENT EXHAUST N 3 DIAMETER PVC INTAKE COMBUSTION ag SUF Concentric Vent for 120 through 300 VENT 18 cmx 10 TERMINAL t j 4 10cm VENTPIPE SUPPLIED LENGTH 465 116 cm ALLOWABLE LENGTH 66 5 166 cm xe V NT 6 e EINE SUPP SUPPLIED LENGTH 25 3 8 64 cm BUSHING ALLOWABLE LENGTH 45 3 8 115 cm STOP LIP SUF Concentric Vent for 400 through 500 Figure 1 Servicing should only be performed by a Qualified Service Agent VENT CONDENSATION 6 PIPE FIELD SUPPLIED 6 x 4 REDUCER FIELD SUPPLIED E 4 PIPE FIELD SUPPLIED EXHAUST ELB
7. DC current The chart below lists the current readings the frequency signal displayed by the VFD and the pressure switch settings needed for the CCB to let the burner operate The frequency numbers displayed may vary slightly with slight variations in the DC voltage generated by the CCB If the water heater exhibits poor run characteristics check the frequency display If the frequency is more than 5 out of range check the DC volt signal at the terminals shown on page 43 Voltage Frequency Speed Instructions VFD Model SUF 400 SUF 500 Instructions Volts DC Terminals OV and AI IBE 010006 Volts Frequency Pressure wc Volts Frequency Pressure w c Purge Speed 777 150 Hz 2 5 85 777 150 Hz 2 5 85 Ignition speed 7 53 150 Hz 2 5 3 9 10 181 Hz 72 High speed 777 150 Hz 2 5 85 9 84 196 Hz 9 0 VFD Part Number 197500 000 Frequency is displayed in the red LED 155 Hz 44 Servicing should only be performed by a Qualified Service Agent WIRING DIAGRAM SUF 120 300 LOW GAS BLOCKED BLOCKED BLOWER A V J16 vr sr 9r PRESSURE SWITCH VALVE JUMPER WIRE BETWEEN PINS BAND 11 ON J6 PLUG SINGOW 3ov4s31NI win quvoa 1OHINOO 1VH1N3O 899 Orr Sir Ir er er er Lr HOT SURFACE IGNITER pau poem FL
8. declared advanced information can be found in the control By pressing the Advanced button detailed information can be found regarding diagnosing and resolving the problem WARNING Usage of the Advanced information requires ability equivalent to that of a licensed tradesman in the field involved 24 Servicing should only be performed by a Qualified Service Agent ACCESS TO THE CURRENT FAULT OR WARNING When a fault or warning has been detected by the control it will automatically be displayed on the screen and the back light will blink If you choose to leave the current fault or warning by pressing the Back key you can always return to the fault through the display menu Main Menu Temperatures Heater Status Display Settings Heater Information Current Fault none ACTION To get to the current fault information screen press Menu DISPLAY State Ultraforce SUF 130 500 Tank Temperature 103 F Operating Set Point 120 F Status Heating e OFF 68 6x9 Menu Help ACTION Press the DOWN button for more information DISPLAY Blower Prover Open Fault occurred 2 mins ago The blower prover switch remains open after the blower has been energized Press DOWN for more Servicing should only be performed by a Qualified Service Agent 25 FAULT CODES All faults warnings and errors are given in plain English text Some have a Code alpha numeric value assigned Please read the
9. full English text and not the alpha numeric value when calling for assistance Following is a complete list of all faults warnings and errors for this commercial gas control 0 00 AC Reversed 0x45 Upper Probe Short 0x46 Lower Probe Short 0x47 Upper Probe Open 0x48 Lower Probe Open 0xB4 Flame Probe Short OxA9 Flame Detect Error 0 5 Energy Cut Out ECO Low Gas OxAT Blocked Air Intake OxA8 Blocked Exhaust Event OxAC Blower Prover Failure Ox1AC Blower Prover Open OxAE Igniter Current Error Ox1AE Low Igniter Current 0xB2 Ignition Failure OxAA Gas Valve Error 1 Gas Valve Failure EEPROM Failure Hardware Failure RAM Failure UIM Screen Model Config Fail Power Supply Fail MCB Comm Error Communication Failure Low Anode Protection Warning 0 02 No Anode Current Warning 0 06 No Anode Voltage Warning 26 Servicing should only be performed by a Qualified Service Agent VIEWING THE FAULT HISTORY VIEWING INFORMATION ABOUT THE HEATER The controller for this water heater will store a history of ten of the last Fault and Warning conditions that occurred This is stored in the Fault History The information about the fault or warning will include diagnostic information as well as an estimate of how long ago the fault occurred ACTION Press the SELECT button for more information DISPLAY Main Menu Heater Status Display Settings Heater Information Current Fault none
10. part for residential purposes including those owned or operated by the Commonwealth 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 the following requirements shall be satisfied INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment the installing plumber or gas fitter shall observe that a hard wired carbon monoxide detector with an alarm and battery backup is installed on the floor level where the gas equipment is to be installed In addition the installing plumber or gas fitter 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 sidewall 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 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 th
11. such as plumbing air supply venting gas supply electrical supply are required in addition to electrical testing skills Some products may require combustion testing equipment and certification If you do not possess these skills or do not have the proper tools you should not attempt to service this water heater 2 Servicing should only be performed by a Qualified Service Agent TOOLS REQUIRED ELECTRICAL MULTIMETER CAPABLE OF MEASURING CONTINUITY OHMS AC amp DC VOLTS AMPERES MICROAMPERES MILLIVOLTS and FREQUENCY Hz Model DL289 or equivalent DIGITAL MANOMETER 60 W C in 01 increments Note A digital manometer is required for testing pressure switches and can replace a gas pressure gauge draft gauge or slack tube manometer for checking gas pressure model EM200 or equivalent WATER PRESSURE GAUGE w LAZY HAND AND HOSE BIBB CONNECTION THERMOMETER 1 1 16 INCH SOCKET WITH EXTENSION FOR ANODE REPLACEMENT SET OF NUMBERED DRILL BITS WATER PRESSURE TEST GAUGE W LAZY HAND AND HOSE BIBB DIGITAL MANOMETER DIGITAL MULTIMETER CONNECTION Servicing should only be performed by a Qualified Service Agent GENERAL INFORMATION INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS For all side wall terminated horizontally vented power vent direct vent and power direct vent gas fueled water heaters installed in every dwelling building or structure used in whole or in
12. 5 VENT TERMINATION DIRECT VENT ALL MODELS WHEN LOCATING THE TERMINALS ON A SIDEWALL THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED 1 The intake vent terminal and the exhaust vent terminal must terminate on the same exterior wall and must be located at a minimum of 24 61 cm from the vertical centerline of the exhaust vent terminal see Figure below In colder climates increasing this separation to atleast 48 122 cm will reduce possibility of frost over from side winds blowing exhaust vapors to the air intake of the direct vent 2 The horizontal centerline of the intake vent terminal may not be located lower than the horizontal centerline of the exhaust vent terminal FOR ALL MODELS 724 61cm Servicing should only be performed by a Qualified Service Agent DIRECT VENTING ALL MODELS The air intake provided on the unit contains a mesh screen to prevent large particles from entering the unit WHEN THE UNIT IS TO BE SET UP AS A DIRECT VENT THE BALANCE PLATE AND MESH SCREEN MUST BE REMOVED BEFORE GLUING PIPE TO THE CONNECTOR THE INLET VENT PIPE MAY THEN BE GLUED TO THE AIR INTAKE PROVIDED ON THE UNIT 45 PVC Elbow MESH SCREEN i H ii E Remove the balance plate SUF 400 500 only and mesh screen before 3 120 250 gluing intake air pipe to the fitting 4 300 500 Two 3 or 4 45
13. AME SENSOR p zs Perm R prose ET ETT ANODE 1 mn LOWER TEMPERATURE PROBE ANODE 2 120 VAC 1 POWER i COMBUSTION BLOWER a GROUND ESSEN 120 vac NEUTRAL oNorr m Sich pe D JUNCTION BOX sme TRANSFORMER BURNER GROUND BOI sosoca ENCLOSURE Servicing should only be performed by a Qualified Service Agent 45 WIRING DIAGRAM SUF 400 500 LOW GAS PRESSURE SWITCH GAS VALVE O 9r BLOCKED INTAKE AIR M ENABLEDISABLE CIRCUIT BLOCKED EXHAUST BLOWER PROVER ew JINON 39 V3S3 LNI YAaSN WIN GHVOS 10H1NOO 1VHIN39 999 125 nm HOT SURFACE IGNITER i es lt FLAME SENSOR spe Rea ey sae Spee dorem pm lt p Re 8 pM NOTE COMBUSTION BLOWER MOTORS 400 000 amp 500 000 Blur MODELS ARE THREE PHASE 30 MOTORS BLACK WHITE AND RED WIRES MUST BE ENCLOSURE es ESAE SOON OR ME NOTOR Wak TURN BACKWARDS Ts MAY CADE THE Conant SYST TO LOCK OUT ON E SLOWER PROVER OPEN
14. C 100 WC 0 98 kPa 249 kPa 0 kPa 0 kPa 1 25 kPa 249 kPa 4 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS SUF 120 AND 150 GAS PRESSURE ADJUSTMENT PROCEDURE GAS PRESSURE SUF 120 AND 150 MODELS Main line gas pressure to the water heater for natural gas should be between a maximum of 10 5 w c 2 59 kPa for natural gas 14 0 w c 3 45 kPa for propane and a minimum of 4 8 w c 1 18 kPa for Natural Gas and 8 5 w c 2 08 kPa for Propane Gas Also see gas pressure specification table on page 4 A supply gas pressure regulator service regulator must be installed on the gas supply line within 10 305 cm of the unit 1 Check gas line pressure with a manometer 2 Check manifold pressure gauge manometer connected to the manifold pressure tap on the gas control valve If full rate adjustment is required remove cover screw from top of the gas control valve Using a small screwdriver turn adjusting screw clockwise to increase or counterclockwise to decrease gas pressure to obtain 4 0 w c 1 kPa for natural gas and 10 0 w c 2 5 kPa for L P Gas 3 Cycle the burner on and off several times to check its operation 4 Check the operation of the limit and operating controls Check the vent system seams and joints and ensure that there is no discharge of flue products into the room 6 Check the input rate HIGH ALTITUDE INSTALLATIONS SUF 120 150 For appl
15. FOR COMPLETE INSTALLATION INSTRUCTIONS amp DETAILS Horizontal Sidewall Venting Vertical Rooftop Venting EXHAUST VENT TERMINAL INTAKE VENT TERNAL TERMINAL TERMINAL rugas ET Wer Taner d 2a eem pn 2 gt m ond TT Eo eruca Servicing should only be performed by a Qualified Service Agent INSTALLATION VENTING CATEGORY AND MATERIALS ULTRA FORCE VENTING Category IV Positive pressure in vent above atmospheric These models will produce excessive condensate in vent Vent system must not be combined with any other appliances Flue gas temperatures less than 140 F Condensing water heater thermal efficiency of this product will produce condensate in the vent system the heater is equipped with provision for draining condensate from vent system PH of condensate approximately 3 59 within tolerance for cast iron drains Type venting May be installed Direct Vent draws all fresh air for combustion from and discharges flue gases to the outdoor atmosphere through 2 pipes May be installed Conventional Vent uses room air for combustion and discharges flue gases to the outdoor atmos
16. OW VENT CONNECTION FACTORY INSTALLED VENT EXHAUST CONNECTION Failure to properly install the drain line on the condensate elbow will result in a water heater shut down and a blocked exhaust fault message The average dew point of natural gas flue products is 127 F Propane flue products is 119 F With 70 F ambient air temperature and 180 F stored water temperature exhaust gas will be approximately 140 F Q CAN I DRAIN THIS CONDENSATION TO THE FLOOR DRAIN A The Corrosion Resistance of Cast Iron Soil Pipe by the Ductile Metals Association formally the Cast Iron Soil Pipe Institute states that Internal corrosion of cast iron soil pipe and fittings can be caused by strong acids or other reagents having an acidity of pH 4 3 or less if allowed to contact cast iron pipe for an extended period of time without sufficient dilution to raise the pH valve about 4 3 By avoiding low pH discharges internal corrosion problems can be limited or eliminated assuring the owner many years of service Q WHAT ABOUT THE PH VALUES OF CONDENSATE AND SODA POP A The pH of the SUF condensate average 4 5 which is approximately 4 times less concentrated than the limit of 4 3 recommended by the DMA Any water flow in the drain rapidly dilutes the condensate even more A can of leading carbonated cola drink measured a pH of 2 5 which is 300 times more concentrated than the SUF condensate Q WHAT DOES THE PH SCALE MEAN A The PH value i
17. ROL SEQUENCE FLOW CHART CONTROLS CENTRAL CONTROL BOARD CCB CONTROLS GAS VALVE SUF 120 CONTROLS GAS VALVE SUF 150 CONTROLS GAS VALVE SUF 199 AND 250 CONTROLS GAS VALVE SUF 199 AND 250 CONTROLS GAS VALVE ORIFICE CHART SUF 300 400 CONTROLS GAS VALVE ORIFICE CHART SUF 500 CONTROLS PRESSURE SWITCHES ALL MODELS CONTROLS PRESSURE SWITCHES SUF 120 THROUGH 250 CONTROLS PRESSURE SWITCHES SUF 300 400 500 CONTROLS CONNECTIONS IGNITER FLAME SENSOR SIGHT GLASS POWERED ANODES 40 HOT SURFACE IGNITER FLAME SENSOR CONTROL TIMING BLOWER SPEED CONTROL SUF 199 AND 250 VARIABLE FREQUENCY DRIVE SUF 400 AND 500 VARIABLE FREQUENCY DRIVE BLOWER SPEED AND PRESSURE READINGS WIRING DIAGRAM SUF 120 300 WIRING DIAGRAM SUF 400 500 Servicing should only be performed by a Qualified Service Agent 1 INTRODUCTION The service handbook is designed to aid in servicing and troubleshooting State Water Heaters Ultra Force SUF commercial water heaters in the field No duplication or reproduction of this book may be made without the express written authorization of the State Water Heaters The following text and illustrations will provide you with a step by step procedure to verify proper installation operation and troubleshooting procedures Additional quick reference data is included to assist you in servicing these pro
18. Service Handbook COMMERCIAL GAS HIGH EFFICIENCY WATER HEATERS MODELS SUF 60 thru 120 stote SUF 100 thru 250 WATER HEATERS SUF 130 thru 500 SERIES 100 101 and 104 500 Tennessee Waltz Parkway Ashland City TN 37015 SERVICING SHOULD ONLY BE PERFORMED BY A QUALIFIED SERVICE AGENT PRINTED IN THE USA 0511 198152 003 TABLE OF CONTENTS INTRODUCTION cease Ep ONS rs A aaa escape IMS yu QUALIFICATIONS TOOLS REQUIRED GENERAL INFORMATION GAS PRESSURE SPECIFICATIONS INSTALLATION QUICK TIPS SUF 120 AND 150 GAS PRESSURE INSTALLATION QUICK TIPS SUF 199 AND 250 GAS PRESSURE INSTALLATION QUICK TIPS SUF 300 400 500 GAS PRESSURE INSTALLATION QUICK TIPS SUF 300 400 500 INSTALLATION VENTING CATEGORY AND MATERIALS VENTING TABLES SUF 120 250 VENTING TABLES SUF 300 400 500 CONCENTRIC VENTING VENT CONDENSATION VENTING ALL MODELS SINGLE PIPE POWER VENT USING ROOM AIR VENTING ALL MODELS TWO PIPE DIRECT VENT USING OUTSIDE AIR VENT TERMINATION DIRECT VENT ALL MODELS DIRECT VENTING ALL MODELS CONTROL OVERVIEW ADJUSTING TANK TEMPERATURE OPERATING SET POINT DIFFERENTIAL CHANGING THE DISPLAY UNITS FAULT AND WARNING CONDITIONS ADVANCED DIAGNOSTIC INFORMATION ACCESS TO THE CURRENT FAULT OR WARNING FAULT CODES VIEWING THE FAULT HISTORY VIEWING INFORMATION ABOUT THE HEATER CONTROL SEQUENCE TYPICAL ALL MODELS CONT
19. THE CONTROLLER MONITORS THE AIR FLOW AND MAKES ADJUSTMENTS TO THE FAN SPEED WHICH IN EFFECT CONTROLS THE AMOUNT OF GAS FLOW THEREFORE THE UNIT WILL SELF ADJUST TO ACQUIRE THE CORRECT AMOUNT OF INPUT Supply gas pressure to the water heater must not exceed a maximum of 10 5 w c 2 95 kPa for natural gas or 14 w c 3 45 kPa for propane The minimum supply gas pressure is 4 w c 98 kPa for natural gas and 9 w c 2 22 kPa for propane gas A supply gas pressure regulator service regulator must be installed on the gas supply line within 10 305 cm of the unit Once the unit is installed and filled with water and the inlet pressures confirmed simply turn the switch on and observe operation Cycle the unit off and on several times to ensure proper operation HIGH ALTITUDE INSTALLATION The SUF 199 and 250 models are suitable for installation up to 10 100 feet above sea level with no adjustments GAS ORIFICE The SUF 199 and 250 models do not have a natural gas orifice A 230 orifice is used on LP gas models Venturi Gasket w o orifice Gas Control with 230 LP Orifice Servicing should only be performed by a Qualified Service Agent CONTROLS GAS VALVE SUF 199 AND 250 Pressure readings may be taken on the gas valve by connecting to the pressure ports on the valve The manifold pressure on this valve is 0 WC 0 kPa when the water heater is running Refer to the gas pressure chart on page 4
20. Tank Temperature 127 F Upper Temperature 130 F Lower Temperature 113 F Heater Regulated to Tank Servicing should only be performed by a Qualified Service Agent 21 CHANGING THE DISPLAY UNITS The desktop menu has the option of selecting between degrees Fahrenheit and degrees Celsius for temperature displays This can be found in the Display Settings menu Also in this menu you may adjust how the back light operates and the contrast of the LCD screen ACTION From the Main Menu press the DOWN button to highlight Display Settings then press Select DISPLAY Main Menu Temperatures Heater Status Display Settings Heater Information Current Fault none ACTION Use the UP and DOWN buttons to highlight the desired setting Then press Change Again use the UP and DOWN buttons to scroll through the options for that setting DISPLAY Display Settings Temperature Units Backlight Delay Contrast 2 Servicing should only be performed by a Qualified Service Agent ACTION Press Update to accept the change or Cancel to reject it DISPLAY Display Settings Temperature Units Backlight Delay Contrast Servicing should only be performed by a Qualified Service Agent 28 FAULT AND WARNING CONDITIONS ADVANCED DIAGNOSTIC INFORMATION This water heater control has the ability to monitor almost all aspects of the water heater s operation In the event of an undesirable or unsafe condition
21. a tat em above rites oo en anaes en tem V ang rationi Clearance above paved balcony clearance ta sidevalk or paved eet 213m scam 12 a0 em ao cm akerd y oat 213 mit pu property Clearance undar 3 taot pem 2 oot 60 em M veranda porch deck or 12 inches 30 em 12inches 20cm Cuarance is uda Gs 1 In accordance with the current CSA 8149 1 Natural Gas and Propane Installation Cade 2 In accordance with the current ANS 2223 1 NFPA 54 National Fuel Gas Code 1B inches 45 cm 18 inches 45 om Avent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings Permitted only if veranda porch deck or balcony is fully open on minimum of two sides beneath the floor Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer s installation instructions 14 Servicing should only be performed by a Qualified Service Agent VENTING ALL MODELS TWO PIPE DIRECT VENT USING OUTSIDE AIR TERMINATION CLEARANCES SIDEWALL DIRECT VENT DIRECT VENT using outdoor air for combustion EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION MA We M VENT TERMINAL X AIR SUPPLY INLET XJ AREA WHERE TERMINAL IS NOT PERMITTED Fig
22. clearances for Power Vent installations Power Vent configurations use room air for combustion CANADIAN INSTALLATIONS US INSTALLATIONS 2 CANADIAN INSTALLATIONS 1 US INSTALLATIONS clearance to each side t centr tne extended H above melarfeguatr assembly Clearance above grade A veranda porch deck ar 12 inches 30 cm 12 inches 30 cm balcony 4 5 m above the meter regulator assembly 3 foot 91 cm within a height 15 f 3 feet 91 em within a height 15 feet 4 5m above the meterregulator assembly inches 15 em for appliances up to 10 000 Btufhr 3 KW 12 inches 30 feet 1 2 m below em forapplances between 10000 orto side of opening Stuhr 3 KW and 100 000 Btu h 30 1 foot 30 cm above Ciearance to window B jor door that may be Clearance to service regulator vent outat a teet 91 em teet 91 em m from the center ine of he terminal KW 36 inches 91 cm for appliances opening above 10000 Bu G0 WN hechos 15 cm or applances up Clearance o anon io OOO SUN kh T2 ehas ou 1 2 m belu orto Gaerne to G0 cn balan 4 faat 11 2 my balon or pemanenydosed 12inches 30 emye a0 em J initio bung er 10000 str RW ana 100000 i of opening ol window combustion air inlet to Btulhr 30KW 36 inches 91 it mysherasblnce lor appanan abore 10000 Bu CEES verted su cited Sve a trial inane to
23. couausnon O m eo GREEN 8x 55 120 VAC NEUTRAL mem 3 if owe 3 Eumenes med t20vac Hor 1 TRANSFORMER BURNER GROUND ER a sioe cca BURNER BOLT 46 Servicing should only be performed by a Qualified Service Agent COMMERCIAL GAS HIGH EFFICIENCY WATER HEATERS Stote WATER HEATERS 500 Tennessee Waltz Parkway Ashland City TN 37015 www statewaterheaters com
24. ducts The information contained in this handbook is designed to answer commonly faced situations encountered in the operation of this product line and is not meant to be all inclusive If you are experiencing a problem not covered in this handbook please contact State Water Heaters Technical Information at 1 800 365 0024 by email at help statewaterheaters com or your local State Water Heaters representative for further assistance Our website at www statewaterheaters com is also a resource for installation and service information This handbook is intended for use by licensed plumbing professionals and reference should be made to the installation manual accompanying the product This handbook contains supplemental information to the product s installation and operation manual QUALIFICATIONS ANSI 2223 1 Sec 3 3 83 Qualified Agency Any individual firm corporation or company that either in person or through a representative is engaged in and is responsible for a the installation testing or replacement of gas piping or b the connection installation testing repair or servicing of appliances and equipment that is experienced in such work that is familiar with all precautions required and that has complied with all the requirements of the authority having jurisdiction Service of this water heater requires ability equivalent to that of a Qualified Service Agent licensed tradesman in the field involved Installation skills
25. ered anodes If the control determines that the actual water temperature inside the tank is below the programmed temperature set point less the differential a call for heat is activated If all checks are successfully passed the combustion blower is energized for the pre purge cycle 5 When the pre purge cycle is complete power is applied to the igniter element for the igniter warm up period Atthe conclusion of the igniter warm up period the gas valve will open allowing gas to enter the burner chamber The igniter will remain on for a short predetermined time period then will be turned off The control will monitor the flame sense probe to confirm a flame is present If a flame is not verified within predetermined time period the gas valve will immediately be closed and the blower will continue to run for approximately 30 seconds inter purge The control will try for ignition two more times before lockout If a flame is confirmed the control will enter the heating mode where it will continue heating the tank water until the set point temperature plus differential is reached At this point the gas valve is closed and the control enters the post purge cycle The combustion blower will run for the duration of the post purge cycle to purge the system of all combustion gases When the post purge cycle is complete the blower is de energized and will coast to a stop The control will now enter the idle state while
26. for DN Menu Help CC OPERATION J BUTTONS 18 Servicing should only be performed by a Qualified Service Agent The table of status icons describes graphically operational details of the water heater Below is a legend of all the status icons Status Icon Description The temperature of the water in the tank has fallen and the water heater will now initialize a new heating cycle The temperature of the water in the tank has reached the Operating Set Point The control is unable to initiate any further heating cycles This is usually caused by a fault condition detected by the control but can also occur when an external system like an energy management system has asked the water heater to discontinue any further heat cycles The blower is being energized The blower pressure switch has been made The igniter has been energized The igniter has been energized and sufficient current for ignition has been detected KA 3636 Qw The control has requested that the gas valve be turned on The control has sensed flame in the burner The control has detected a fault condition A fault condition will cause the water heater to discontinue operation The control has detected a warning condition These conditions will not cause the water heater to discontinue further heating cycles but does merit attention 2 D gt DR Servicing should only be performed by a Q
27. g should only be performed by a Qualified Service Agent 39 CONTROLS CONNECTIONS IGNITER FLAME SENSOR SIGHT GLASS POWERED ANODES The connections for the hot surface igniter and the flame sense rod are shown below Also shown is the burner sight glass These features are typical for all models The new Ultra Force commercial water heater is equipped with powered anodes These anodes never need replacement The CCB monitors the current through the anodes and will declare a fault if there is a disconnected wire or if there is no water in the tank Warning Anode Under Current Warring occurred 2 mins ago 9 The power anode s current is low Press DOWN for Back Advanced Powered anode connection 40 Servicing should only be performed by a Qualified Service Agent HOT SURFACE IGNITER FLAME SENSOR CONTROL TIMING HOT SURFACE IGNITER This water heater is equipped with an electric hot surface igniter The igniter material is silicone carbide and should not be handled with bare hands because of possible damage to the igniter The normal ohm reading at 77 F is listed between 40 and 70 ohms The minimum igniter current monitored by the CCB is 2 7 amps Once this threshold is met a check mark will appear by the igniter icon in the UIM display FLAME SENSOR This water heater is equipped with an electronic flame sensor The flame sensor senses flame by passing a small electric current thro
28. he specified input rate is achieved 6 Turn the manual gas valve to OFF Replace the pressure regulator cover screw Remove the pressure gauge or manometer from the manifold pressure tap Replace the set screw in the manifold pressure tap If the gas pressure regulator cannot be adjusted to give the full input rating with sufficient gas pressure at the valve check to ensure the unit is equipped with the correct orifice 6 Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS SUF 199 AND 250 GAS PRESSURE ADJUSTMENT PROCEDURE GAS PRESSURE SUF 199 AND 250 MODELS IMPORTANT NOTE THE SUF 199 AND 250 MODELS INCORPORATE A NEW GAS CONTROL WHICH OPERATES AT A MANIFOLD PRESSURE OF 0 w c 0 kPa FOR BOTH NATURAL AND PROPANE GAS SEE THE GAS PRESSURE CHART ON PAGE 4 THESE MODELS ARE CONFIGURED PRIOR TO BEING SHIPPED FROM THE FACTORY AND NO ADJUSTMENTS ARE NECESSARY PRIOR TO STARTUP THE CONTROLLER MONITORS THE AIR FLOW AND MAKES ADJUSTMENTS TO THE FAN SPEED WHICH IN EFFECT CONTROLS THE AMOUNT OF GAS FLOW THEREFORE THE UNIT WILL SELF ADJUST TO ACQUIRE THE CORRECT AMOUNT OF INPUT Supply gas pressure to the water heater must not exceed a maximum of 10 5 w c 2 95 kPa for natural gas or 14 w c 3 45 kPa for propane The minimum supply gas pressure is 4 8 w c 1 20 kPa for natural gas and 8 5 w c 2 12 kPa for propane gas Once the unit is installed and filled with water and the inlet pressures c
29. iance installation locations with elevations above 6 500 feet 1982 meters consult the High Altitude Installation section of the owners manual 1 Attach a pressure gauge manometer to the manifold pressure tap and refer to page 4 for correct pressure 2 Use this formula to clock the meter Be sure other gas consuming appliances are not operating during this interval Btuh 3600 XH T T Time in seconds to burn 1 cubic foot of gas With a stopwatch read the gas meter and measure the amount of time required for the heater to consume 1 cubic foot of gas H Heating value of gas in Btu s per cubic foot of gas Btuh Actual heater input rate in Btuh EXAMPLE Using SUF 150 heater T 25 25 seconds 1050 Btu ft BTUH Servicing should only be performed by a Qualified Service Agent Compare result to the de rated input required for the elevation at the installation location Should it be necessary to adjust the gas pressure to the burner to obtain the full input rate the steps below should be followed 3 Remove the pressure regulator cover screw and adjust the pressure by turning the adjusting screw with a small screwdriver Do not exceed 4 0 1 kPa natural gas models and 10 0 w c 2 5 kPa on the propane models Clockwise to increase gas pressure and input rate Counterclockwise to decrease gas pressure and input rate 4 Clock the meter as in step 2 above 5 Repeat steps 3 and 4 until t
30. irty 30 days to comply with the above requirements provided 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 in accordance with the above provisions shall comply with NFPA 720 and be ANSI UL 2034 listed and CSA 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 appliance 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 GAS PRESSURE SPECIFICATIONS Natural Propane Natural Propane Natural Propane 120 150 120 150 199 250 199 250 300 400 500 300 400 500 Maximum Gas 105 WC 140 WC 105 WC 140 WC 11 0 WC 14 00 WC Supply Pressure 2 59 kPa 3 45 kPa 2 59 kPa 3 45 kPa 2 74 kPa 349 kPa Nominal Gas 70 WC 11 0 WC 70 WC 11 0 WC 70 WC 11 0 WC Supply Pressure 1 74 kPa 2 74 kPa 174 kPa 2 74 kPa 174 kPa 2 74 kPa Minimum Gas Supply Pressure 48 WC 11 0 WC 48 WC 8 5 WC 5 2 WC 11 0 WC Low Gas Press 1 20 kPa 2 74 kPa 1 20 kPa 2 12 kPa 1 54 kPa 2 74 kPa Switch Setting a 4 0 WC 10 0 WC 0 WC 0 WC 4 00 W
31. ll declare a fault on the UIM if either condition occurs BLOCKED OUTLET PROVING SWITCH The blocked outlet proving switch electrical contacts are normally closed The blocked outlet proving switch electrical contacts will open on a rise in pressure Check to see if the condensate is allowed to flow freely from the exhaust elbow and for obstructions in the exhaust venting and exhaust vent terminal Also check that the equivalent feet of vent pipe for the specific model has not been exceeded Check the vent length tables on page 11 BLOCKED INLET PROVING SWITCH The Blocked Inlet Proving switch electrical contacts are normally closed The blocked inlet proving switch electrical contacts will open when an increase in negative pressure vacuum occurs in the intake vent pipe The switch is connected to the pressure tap on the PVC flange connected to the inlet of the blower When this switch prevents the unit from igniting most likely the intake is blocked by some means Verify that the air intake pipe and air intake vent terminal are free of obstructions that may prevent air from entering the unit Also check that the equivalent feet of vent pipe for the specific model has not been exceeded Check the vent length tables on page 11 LOW GAS PRESSURE SWITCH The Low Gas Pressure Switch electrical contacts are normally open The low gas pressure switch electrical contacts will close on a rise pressure The contacts will open when the pressure falls bel
32. onclusion of the igniter wam up the gas valve will open for 4 seconds If the control senses flame the water heater will fire until the set point is reached At the conclus of the inter purge the igniter will warm and the gas valve will open At the conclusion of the heating cycle the blower will enter a post purge cycle and the control will enter an idle state Servicing should only be performed by a Qualified Service Agent 29 CONTROLS CENTRAL CONTROL BOARD CCB The Central Control Board or CCB is contained in the housing shown below Access to the board and the wiring harness plugs can be accomplished by removing two Phillips screws holding the cover Jl Ji Remove these screws to release cover The CCB is controlled by the settings given through the desk top menu UIM The CCB also monitors all pressure switches the hot surface ignitor tank temperatures the gas valve the anodes and the flame sensor The CCB directly controls blower speed on the SUF 199 and 250 models and indirectly controls blower speed on the SUF 400 and 500 by means of a Variable Frequency Drive see page 43 Note Improper operation may be the result of a loose connection Please check all wiring connections and the power supply to the water heater This view shows the cover removed from the CCB 30 Servicing should only be performed by a Qualified Service Agent This is the back of the UIM Ser
33. onfirmed simply turn the switch on and observe operation Cycle the unit off and on several times to ensure proper operation HIGH ALTITUDE INSTALLATION The SUF 199 and 250 models are suitable for installation up to 10 100 feet above sea level with no adjustments GAS ORIFICE The SUF 199 and 250 models do not have a natural gas orifice A 230 orifice is used on LP gas models Mentiuni Venturi Gasket wiLP Gas Orifice 230 Brass Gas Control Without Orifice Natural Gas Gas Control with 230 LP Orifice A supply gas pressure regulator service regulator must be installed on the gas supply line within 10 305 cm of the unit Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS SUF 300 400 500 GAS PRESSURE ADJUSTMENT PROCEDURE GAS PRESSURE SUF 300 400 500 A minimum dynamic gas supply pressure of 5 2 w c 1 29 kPa for Natural Gas and 11 w c 2 74 kPa for LP Gas is required before making any adjustment to the gas control pressure regulator Attempts to adjust the regulator during periods of low gas supply pressure could result in over firing of the water heater when the gas supply pressure returns to normal Check gas line pressure with a manometer adjust the gas supply line pressure Gas Pressure table on page 4 5 Check manifold pressure using a pressure gauge manometer connected to the manifold pressure tap on the gas control valve If full rate adju
34. onnection 42 Meter red probe connected to open terminal on plug Servicing should only be performed by a Qualified Service Agent VARIABLE FREQUENCY DRIVE SUF 400 AND 500 The Ultra Force SUF 400 and 500 models have a variable frequency drive VFD that controls the rpm of the blower motor The VFD receives a signal from the central control board that instructs the VFD to transmit the proper frequency to the blower to produce the proper blower speed and proper input Three conditions must be met for the frequency drive to start the blower 1 120VAC must be supplied to the VFD 120VAC input 2 The ignition control board closes an enable circuit terminals 111 and 15V 3 The ignition control board sends a 1 10VDC instruction terminals OV and See table on the next page for voltage and frequency information GROUND HOT NEUTRAL VARIABLE FREQUENCY DRIVE N BLOWER MOTOR WIRES BLACK WHITE RED 2 WITS NOTE BE SURE TO MATCH WIRE COLORS WHEN CONNECTING BLOWER WIRES OR BLOWER MAY RUN BACKWARD AND CAUSE A FAULT za S10 6 RC RA OV AH 5V DO LH Liz LM 15V Aa A A 1 10 VDC Speed Instruction Enable Disable Circuit Servicing should only be performed by a Qualified Service Agent 43 VARIABLE FREQUENCY DRIVE BLOWER SPEED AND PRESSURE READINGS The instructions for the VFD are sent from the CCB to in the form of a
35. ow the fixed set point If this happens during a heating cycle the burner will be shut down and a fault will be declared on the UIM Servicing should only be performed by a Qualified Service Agent 37 CONTROLS PRESSURE SWITCHES SUF 120 THROUGH 250 BLOCKED OUTLET ETT Lr LOW GAS PRESSURE BLOWER PROVER PRESSURE SWITCH SWITCH PRESSURE SWITCH MODEL SWITCH MODEL PRESSURE MODEL PRESSURE 120N 1 2 WC Natural 4 All 40 75 WC LP T Normally Open Normally Open Close on on a Rise in Pressure Tolerance 05 WC Tolerance 4 05 WC Normally Closed Open on a Fallin Pressure Open on a Rise in Pressure Tolerance 05 WC Top View of Pressure Switches Note Check the website www statewaterheaters com for Technical Bulletin 5023 06 Air Pressure Switches under Literature Service Handbooks 38 Servicing should only be performed by a Qualified Service Agent CONTROLS PRESSURE SWITCHES SUF 300 400 500 MODEL Natural LP 49 0 WC BLOCKED INLET Normally Open PRESSURE SWITCH Close on a Rise in Pressure Tolerance 05 WC aries 1n Presaure Normally Closed Tolerance 4 05 WC a Hem Pressure Tolerance 05 WC Pressure Tolerance 05 WC Top View of Pressure Switches SUF 300 400 500 Note Check the website www statewaterheaters com for Technical Bulletin 5023 06 Air Pressure Switches under Literature Service Handbooks Servicin
36. phere through 1 pipe Vertical and horizontal Vent system can be terminated vertically or horizontally side wall Vent materials PVC schedule 40 CPVC schedule 40 ABS schedule 40 Cellular Core PVC Concentric Venting Concentric vent kits for all models 10 Servicing should only be performed by a Qualified Service Agent VENTING TABLES SUF 120 250 Maximum equivalent feet of intake and vent pipe using 3 PVC is 50 feet 15 2 m Equivalent feet must include any 90 elbows two 45 elbows equal one 90 elbow Three inch diameter 90 elbows are equivalent to 5 1 5 m of pi ipe Maximum equivalent feet of intake and vent pipe using 4 PVC is 120 feet 36 6 m Equivalent feet must include any 90 elbows two 45 elbows equal one 90 elbow Four inch diameter 90 elbows are equivalent to 5 1 5 m of pi ipe Vent Length Table Equivalent Feet Meters 120 through 250 Vent Length Table Equivalent Feet Meters 300 40 0 500 Number of 90 Elbows 4 PVC Maximum Feet meters of Pipe ONE 1 6519 7 m TWO 2 60718 2 THREE 3 55716 7 FOUR 4 50715 2 FIVE 5 4513 6 m SIX 6 401241 m Servicing should only be performed by a Qualified Service Agent Number of 90 Elbows 3 Minimum Pipe 3 Maximum Pipe Ft M Maximum Pipe ONE 1 724 45 137 115 35 TWO 2
37. s a measure of acidity or alkalinity A pH of 7 is neutral Numbers from 7 to 1 indicate increasing acidity and numbers from 7 to 14 indicate increasing alkalinity The pH scale is similar to the Richter scale used to measure earthquakes Each number indicates a change of 10 times the concentration of the previous value A pH 6 is 10 times more concentrated than a pH 7 a pH 5 is 10x10 100 times pH 7 and pH 4 is 10x10x10 1 000 times pH 7 etc Q WHAT ABOUT CONDENSATE NEUTRALIZERS A Condensate neutralizers are usually not necessary A condensate neutralizer is easy to make by filling a short length of 2 or 3 PVC pipe with landscape marble chips capping it and installing it in series with the condensate drain of the equipment Most commercial neutralizers are off the market because of poor demand for the product Condensation from the exhaust vent piping and tank internal flue way must be allowed to drain A blocked flue indication will often be your first indication that condensate is not draining Servicing should only be performed by a Qualified Service Agent 13 VENTING ALL MODELS SINGLE PIPE DIRECT VENT USING OUTSIDE AIR TERMINATION CLEARANCES SIDEWALL POWER VENT POWER VENT using room alr for combustion EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION ET ZZ 2 VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED Figure 2 Vent terminal
38. stment is required remove cover screw from top of the gas control valve Using a small screwdriver turn adjusting screw clockwise to increase or counter clockwise to decrease gas pressure to obtain 4 0 w c 0 996 kPa for Natural Gas and 10 w c 2 49 kPa for LP gas Cycle the burner on and off several times to check its operation Check the operation of the limit and operating controls Check the vent system seams and joints and ensure that there is no discharge of flue products into the room Check the input rate as shown on page 6 HIGH ALTITUDE ADJUSTMENT SUF 300 400 500 For high altitude adjustments contact the help line on the front of the water heater or contact help statewaterheaters com Servicing should only be performed by a Qualified Service Agent INSTALLATION QUICK TIPS SUF 300 400 500 GAS SUPPLY PIPING 1 1 4 FOR AJWSH130300 NAT amp LP 1 1 4 FOR AJWSHT30400 NAT amp LP EXHAUST CONNECTION 4 LE 40 PVC ONLY PEE 40 EONS GAS SUPPLY PRESSURE NATURAL GAS MIN 5 2 WC DYNAMIC MAX 12 WC STATIC LP MIN WC DYNAMIC 13 WC STATIC MNMUM ELECTRICAL CONNECTION Hor waren OUTLET 12 TOP 120 VAC FOR SERVICEABILITY RELIEF VALVE PLUMBED TO CONTROL FLOOR DRAIN PANEL ACCESSIBLE 6 MAX DISTANCE FROM FLOOR COLD WATER 1 12 INLET A CLEAN OUT DRAN EXHAUST ACCESSIBLE VALVE CONNECTION ACCESSIBLE 4 SCHED 40 PVC ONLY SEE MANUAL
39. that occurs the water heater control will detect this condition and determine the appropriate action The water heater control will display the information on the desktop in plain text that accurately describes the condition and diagnostics information that can be used to correct the issue There are two types of conditions that can occur during operation These are Warnings and Faults Warnings This is a non safety related condition that the control has detected that may cause the water heater to operate in a less than optimal condition but does not pose a safety concern Note When these conditions occur continued heating cycles will continue and the heater will attempt to regulate the water in the tank to the Operating Set Point Example of a Warning Warning Anode Under Current Warning occurred 2 mins ago 9 The power anode s current is low a Press DOWN for Back Advanced Faults This is a safety related condition that has been detected by the heater Note When these conditions occur the water heater WILL NOT CONTINUE any further heating cycles and the water will no longer be heated until the condition is corrected and in most cases power has been cycled Example of a Fault Blower Prover Open Fault occurred 2 mins ago The blower prover switch remains open after the blower has been energized Press DOWN for more Advanced Diagnostic Information When a fault or warning has been
40. ual Gas Control Knob Solenoid connection For Series 104 24V Solenoid Connection ORIFICE CHART SUF 500 Series 100 101 104 Natural 347 No Orifice LP 241 241 36 Servicing should only be performed by a Qualified Service Agent CONTROLS PRESSURE SWITCHES ALL MODELS All SUF models are provided with four pressure switches These switches are essential to the safe and proper operation of the unit The switches are wired to the central control board CCB individually and each is monitored individually The CCB is set up to shut the unit down whenever there is a failure of any of the switches and declare a fault for each individual switch It is important to understand the purpose of each switch Low Gas Pressure Switch Pressure Switches BLOWER PROVING SWITCH The Blower Proving Switch is provided on the heater to verify that the fan is operating It is a positive pressure switch whose electrical contacts are normally open The blower proving switch electrical contacts will close on a rise in pressure as the blower increases the pressure in the burner This switch is connected to the burner tap by a piece of Tygon soft plastic tubing This tubing must be connected in order for the switch to close the electrical contacts The controller requires that the electrical contacts on this pressure switch be open before it will allow the blower to come on The control wi
41. ualified Service Agent 19 ADJUSTING TANK TEMPERATURE OPERATING SET POINT DIFFERENTIAL The Operating Set Point of this water heater determines the regulated temperature for the water in the tank This parameter is adjusted in the desktop Temperature menu Items in this menu allow you to monitor different temperature readings in the tank along with adjusting the Operating Set Point and Differential ACTION From the desktop screen press Menu DISPLAY State Ultraforce SUF 130 500 Tank Temperature 103 F Operating Set Point 120 F Status Heating OFF N Help ACTION From the Main Menu press Select to enter the Temperatures screen DISPLAY Main Menu Heater Status Display Settings Heater Information Current Fault none 20 Servicing should only be performed by a Qualified Service Agent ACTION Press Change then use the UP and DOWN buttons to change the temperature Set Point DISPLAY Temperatures Operating Set Point 120 F Differential 5 F Tank Temperature 127 F Upper Temperature 130 F Lower Temperature 113 F Heater Regulated to Tank Note This procedure can also be used to change the Differential The tank Upper and Lower Temperatures are not user changeable They are determined by the temperature probes on the heater ACTION Press Update to accept the change or Cancel to reset it DISPLAY Temperatures Operating Set Point 120 F Differential 5 F
42. ugh the burner flame This type of flame sensing is also known as flame rectification The CCB is looking for a minimum current of 7 micro amperes for the water heater to operate Once this current is established the UIM will display a flame icon 0 CONTROL TIMING Pre purge 25 seconds Igniter Warm up 17 seconds Trial for ignition Gas 5 seconds Control Open Inter Post Purge 30 seconds Servicing should only be performed by a Qualified Service Agent 41 BLOWER SPEED CONTROL SUF 199 AND 250 The input of the SUF 199 and SUF 250 is determined by blower The input of the water heater may be determined by clocking the meter as shown on page 5 or by making sure the blower is receiving the proper signal The blower rpm is controlled by the Central Control Board CCB The rpm of the blower may be measured by attaching a MULTIMETER that has a Hertz Hz setting as shown in the illustration below If the Hz signal is within 5 of the numbers in the chart below the reading is normal Model High Speed Hz Low Speed Hz 199N 133 87 250N 133 87 199 LP 200 156 250 LP 266 96 Note Removing the plug shown in the illustration will cause the blower to accelerate and the input of the water heater to increase to a much higher rate This may cause damage to the water heater Meter black lead is connected to ground not shown and the red lead is connected to an open terminal on blower speed control c
43. ure 3 Vent terminal clearances for Direct Vent installations Direct Vent configurations use outdoor air for combustion CANADIAN INSTALLATIONS US INSTALLATIONS 2 CANADIAN INSTALLATIONS US INSTALLATIONS 2 Ciearance to each side Clearance above grade foot 91 em within a height 15 3 feet 91 cm within a height veranda porch deck 12 inches 30 em ST ine extandoa above he meleri 15 eel 4 5 m above e balcony regulator assembly metrregulator assembiy inches 15 om for seplaress up 1o inches 15 cm tor applancos ces up to 10 000 3 KW 12 10000 Bite inches 30 for appliances Sinches 23 cm for 10000 j _ Cisarance to sares taot p1 en tent my doar that may be opened 10 000 Buh 3 KW 50 000 15 RW 12 inches 30 em for appliances above 50 000 Blur 15 kW and 100 000 Btulhr 30 KW 36 ean inches 91 em for appliances above 100 000 Blah 30 KW inches 15 em for inches 15 em tor appliances up ies semi Clearance a a non Jie 10 000 Bure 34W 12inches BN ts 10000 Clearance to mechanical air supply 30 em for appliances between BUNNY fae bonoen permanently closed B inches 15 em inches 15 aJ inlet into buildingor 10000 3 KW and 100 000 10 000 Btulhr 3 KW and combustion air inlet to 30 KW 38 inches 91
44. vicing should only be performed by a Qualified Service Agent 31 CONTROLS GAS VALVE SUF 120 The gas control valve on the SUF 120 has a built in adjustable pressure regulator The adjustment screw is accessed by removing the cap screw market regulator in the illustration Inlet gas pressure may be read at the inlet pressure tap only if the manual shut off valve gas cock is in the ON position Leaving the knob in the OFF position will not allow the burner to fire and will generate a fault code on the UIM Universal Interface Module REGULATOR MANUAL SHUT OFF REGULATOR VALVE CONTROLS GAS VALVE SUF 150 The gas control valve on the SUF 150 has a built in pressure regulator The regulator may be adjusted by removing the cap screw marked regulator in the illustration Inlet gas pressure may be read at the inlet pressure tap only if the manual switch is set to the ON position 32 Servicing should only be performed by a Qualified Service Agent CONTROLS GAS VALVE SUF 199 AND 250 ADJUSTMENT PROCEDURE GAS PRESSURE SUF 199 AND 250 MODELS IMPORTANT NOTE THE SUF 199 AND 250 MODELS INCORPORATE A NEW GAS CONTROL WHICH OPERATES AT A MANIFOLD PRESSURE OF 0 w c 0 kPa FOR BOTH NATURAL AND PROPANE GAS SEE THE GAS PRESSURE CHART ON PAGE 4 THESE MODELS ARE CONFIGURED PRIOR TO BEING SHIPPED FROM THE FACTORY AND NO ADJUSTMENTS ARE NECESSARY PRIOR TO STARTUP
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