Instruction Manual COMMERCIAL GAS WATER HEATERS MODELS BTH 300/400/500 (A) SERIES 200 & 201 500 Tennessee Waltz Parkway Ashland City, TN 37015 ANSI/NSF-5 INSTALLATION - OPERATION - SERVICE - MAINTENANCE - LIMITED WARRANTY Low Lead Content WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
TABLE OF CONTENTS Venting Installation Sequence............................................. 23 Power Vent Installation....................................................... 23 Direct Vent Installation........................................................ 23 Vertical Termination Installation........................................... 24 Sidewall Termination Installation......................................... 26 Polypropylene Installations.................................................
SAFE INSTALLATION, USE AND SERVICE The proper installation, use and servicing of this water heater is extremely important to your safety and the safety of others. Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual.
GENERAL SAFETY INFORMATION PRECAUTIONS HYDROGEN GAS FLAMMABLE DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER. Immediately call a qualified service agency to inspect the appliance and to make a determination on what steps should be taken next. If the unit is exposed to the following, do not operate heater until all corrective steps have been made by a qualified service agency. Explosion Hazard Flammable hydrogen gases may be present. 1. External fire.
GENERAL SAFETY INFORMATION Fire or Explosion Hazard Fire Hazard Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. For continued protection against risk of fire: Avoid all ignition sources if you smell gas. Do not expose water heater controls to excessive gas pressure. Do not install water heater on carpeted floor. Do not operate water heater if flood damaged. Use only the gas shown on the water heater rating label.
INTRODUCTION Thank You for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. Detailed installation diagrams are also found in this manual. These diagrams will serve to provide the installer with a reference. It is essential that all venting, water piping, gas piping and wiring be installed as shown.
FEATURES AND COMPONENTS BASIC OPERATION MODULATION The water heaters covered in this manual have a helical coil shaped heat exchanger that is submerged in the storage tank. The water heater’s Main Burner is a radial design burner, it is mounted on the top and fires downward through the heat exchanger. This is a forced draft burner; hot burning gases are forced through the heat exchanger under pressure and exit through the exhaust/vent connection located at the bottom of the water heater.
TOP VIEW 7 8 9 4 14 5 12 10 19 6 2 2 13 3 16 15 18 1 11 17 Figure 3 TOP VIEW COMPONENTS if its contacts are open during a heating cycle. See Table 4 and the Gas Pressure Requirements on page 13. 1. Water Heater's Enable/Disable (On/Off) Switch. When in the "Disabled" (Off) position the switch removes electrical power from the gas valve and blower so that water heating is disabled.
6 4 9 10 3 19 8 2 11 12 18 18 17 14 1 LEFT SIDE 15 13 Figure 4 Figure 5 SIDE VIEWS board, the control system’s LCD display and operational buttons. Used to adjust various user settings and view operational information. See Control System Operation on page 42. 1. Cleanout access panel, covers water heater cleanout opening. 2. CCB enclosure - see Figure 3 on page 8 for description. 11. Temperature-Pressure Relief Valve. See TemperaturePressure Relief Valve on page 15. 3. 120 VAC junction box.
INSTALLATION CONSIDERATIONS ROUGH IN DIMENSIONS 4" PVC AIR INTAKE CONNECTION 1 1/2" SUPPLY GAS CONNECTION 20° GAS 70° T&P FRONT INT AKE BACK 73.75in 187.3cm 1 1/2" NPT WATER OUTLET 63.13in 160.35cm WATER OUTLET HEIGHT 33.12in O.D. 84.12cm 69.25in 175.9cm 75.75in 192.41cm 52.00in 132.08cm T& P DRA IN FRONT 18° 30° 3/4" NPT RECIRC RETURN T US HA EX CL EA NO UT TOP 4" EXHAUST VENT CONNECTION 42° 23.00in 58.43cm 45° CLEANOUT 4.75in 12.07cm 3/4" NPT DRAIN 12.75in 32.
LOCATING THE WATER HEATER There is a risk in using fuel burning appliances such as gas water heaters in rooms, garages or other areas where gasoline, other flammable liquids or engine driven equipment or vehicles are stored, operated or repaired. Flammable vapors are heavy and travel along the floor and may be ignited by the water heater’s igniter or Main Burner flames causing fire or explosion. Carefully choose a location for the new water heater.
OPTIONAL DIRECT VENT TERMINATIONS INSULATION BLANKETS The water heaters covered by this manual can be installed in a Direct Vent configuration using optional concentric and low profile terminations. See the Venting Requirements on page 22, Concentric Termination Installation on page 28 and Low Profile Installation on page 32. Concentric and low profile terminations must be ordered separately.
INSTALLATION REQUIREMENTS GAS PRESSURE REQUIREMENTS TABLE 4 MODEL *MANIFOLD PRESSURE NATURAL GAS PROPANE GAS †MINIMUM SUPPLY PRESSURE ‡MAXIMUM SUPPLY PRESSURE NATURAL GAS PROPANE GAS NATURAL GAS PROPANE GAS BTH 300 0” W. C. (0 kPa) 0” W. C. (0 kPa) 4.8" W .C. (1.19 kPa) 8.5” W. C. (2.12 kPa) 14” W. C. (3.49 kPa) 14” W. C. (3.49 kPa) BTH 400 0” W. C. (0 kPa) 0” W. C. (0 kPa) 4.8" W .C. (1.19 kPa) 8.5” W. C. (2.12 kPa) 14” W. C. (3.49 kPa) 14” W. C. (3.49 kPa) BTH 500 0” W. C.
MIXING VALVES HOT WATER OUTLET Water temperature over 125°F (52°C) can cause severe burns instantly resulting in severe injury or death. 12” TO 15” (30-38 cm) Children, the elderly and the physically or mentally disabled are at highest risk for scald injury. TEMPERED WATER OUTLET Feel water before bathing or showering. Temperature limiting devices such as mixing valves must be installed when required by codes and to ensure safe temperatures at fixtures.
TEMPERATURE-PRESSURE RELIEF VALVE CAUTION Water Damage Hazard Explosion Hazard • Temperature-Pressure Relief Valve discharge pipe must terminate at adequate drain. Temperature-Pressure Relief Valve must comply with ANSI Z21.22CSA 4.4 and ASME code. T&P Valve Discharge Pipe Requirements: Properly sized temperaturepressure relief valve must be installed in opening provided. • Shall not be smaller in size than the outlet pipe size of the valve, or have any reducing couplings or other restrictions.
CONDENSATE DRAIN COMBUSTIBLE MATERIAL STORAGE The water heaters covered in this manual are condensing appliances and require a building drain to be located in close proximity to allow the condensate to drain safely. Fire or Explosion Hazard Condensate drains from the water heater at the exhaust/ condensate elbow located at the bottom. The field installed condensate drain line must not be elevated above the condensate drain connection on the exhaust/condensate elbow, see Figure 9.
AIR REQUIREMENTS UNUSUALLY TIGHT CONSTRUCTION In unconfined spaces in buildings, infiltration may be adequate to provide air for combustion, ventilation and dilution of flue gases. However, in buildings of unusually tight construction (for example, weather stripping, heavily insulated, caulked, vapor barrier, etc.) additional air must be provided using the methods described in the Confined Space section that follows.
FRESH AIR OPENINGS FOR CONFINED SPACES Alternatively a single permanent opening, commencing within 12 inches (300 mm) of the top of the enclosure, shall be provided. See Figure 11. The water heater shall have clearances of at least 1 inch (25 mm) from the sides and back and 6 inches (l50 mm) from the front of the water heater.
OUTDOOR AIR THROUGH TWO VERTICAL DUCTS AIR FROM OTHER INDOOR SPACES The illustrations shown in this section of the manual are a reference for the openings that provide fresh air into confined spaces only. DO NOT refer to these illustrations for the purpose of vent installation. See Venting Installation on page 21 for complete venting installation instructions.
INSTALLATION REQUIREMENTS - COMMONWEALTH OF MASSACHUSETTS COMMONWEALTH OF MASSACHUSETTS INSPECTION 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 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, includi
VENTING INSTALLATION flue gases to the outdoor atmosphere through a sealed vent (exhaust) pipe. Direct Vent configurations have two pipes connected to the water heater, one vent pipe and one intake air pipe. Direct Vent configurations can be terminated in one of seven different arrangements. See Figure 38 on page 33 through Figure 44 on page 34. Breathing Hazard - Carbon Monoxide Gas GENERAL VENTING INSTRUCTIONS • Install vent system in accordance with codes.
VENTING REQUIREMENTS equivalent feet (4.6 m). There is no minimum equivalent feet requirement for the intake air pipe. FIELD SUPPLIED FITTINGS Field supplied fittings should be equivalent to the piping material being installed. Field installed/supplied fittings will add equivalent feet to the vent or intake air piping as indicated below. All field supplied/installed fittings and piping must be factored into the equivalent feet calculations.
VENTING INSTALLATION SEQUENCE exhaust elbow on the water heater. 11. If installing 6 inch pipe transition to 4 inch pipe as shown in Figure 15. The field installed 4” pipe between the exhaust elbow and the 6” x 4” reducer coupling should be 18 inches (45 cm) or less in length. 1. Read the General Venting Instructions on page 21 and Venting Requirements on page 22 before proceeding. These instructions and requirements must be followed on all installations. DIRECT VENT INSTALLATION 2.
FACTORY INSTALLED INTAKE AIR CONNECTION (4” x 3” REDUCER) 14. If installing 4 inch intake air pipe connect the intake air pipe to the intake air connection on the water heater. INSTALL TEE FITTING AS CLOSE TO WATER HEATER INTAKE AIR CONNECTION AS POSSIBLE 15. If installing 6” intake air pipe transition to 4” pipe at the intake air connection on the water heater as shown in Figure 18.
termination must not be excessive in length. The exposed portion of this pipe shall be no more than 2 inches (5 cm), see Figure 19. of the roof as shown in Figure 21 on page 25. The intake air and vent terminations must be oriented facing downward and in the same direction as shown in Figure 21 on page 25. The intake air and vent terminations must have a minimum separation of 24” (61 cm) measured on center line as shown in Figure 21 on page 25.
SIDEWALL TERMINATION INSTALLATION 7. Cut a 5 inch (13 cm) diameter hole for 4 inch pipe or 7 inch (18 cm) diameter hole for 6 inch pipe where the pipe(s) will pass through the wall. 1. Determine the location for the termination(s). 2. If installing only vent (exhaust) piping in a Power Vent configuration through a sidewall; ensure that all exterior sidewall clearance requirements for the termination, shown in Figure 45 on page 35, are being maintained.
POLYPROPYLENE INSTALLATIONS Installations must comply with applicable national, state, and local codes. For Canadian installation, Polypropylene vent must be listed as a ULC-S636 approved system. If Polypropylene vent is not required by your local code, you may use either PVC or CPVC pipes for your water heater that allows non-metallic venting material installations.
CONCENTRIC TERMINATION INSTALLATION termination caps for all concentric terminations must be at the same height measured from ground. See Multiple Concentric Termination Arrangements on page 30. 1. Concentric terminations must be ordered separately. BTH 300 - 500 models must use the 6 inch concentric termination for both 4" & 6" vent diameters; Part Number: 9008841005.
6 INCH CONCENTRIC TERMINATION INSTALLATION 6” x 4” BUSHING (FACTORY INSTALLED) to the 6 inch concentric termination using field supplied 6” x 4” reducer couplings as needed. 9. Return to Direct Vent Installation on page 23 to complete the installation of the intake air and vent piping between the concentric termination and the water heater.
MULTIPLE CONCENTRIC TERMINATION CLEARANCES Four Concentric Terminations When installing multiple concentric terminations vertically through a roof or horizontally through a sidewall ensure the required clearances (separation) between terminations are maintained. Ensure multiple terminations are arranged or grouped as required. 1.
MULTIPLE CONCENTRIC TERMINATION ARRANGEMENTS SIDEWALL The illustrations on this page show some of the installation arrangements for multiple concentric terminations that are allowed. See Multiple Concentric Termination Clearances on page 30 for detailed information on clearances and additional arrangement options. NOTE: When multiple concentric terminations are installed through a roof in the same location all termination caps must be at the same height measured from the ground.
LOW PROFILE VENT INSTALLATION This water heater is certified for sidewall direct venting with IPEX System 636 Low Profile Vent Kit. Follow instructions below for proper installations. All termination kits must be located and installed in accordance with local building code and CSA B149.1 Natural Gas and Propane Installation Code. 1. Once the proper location has been determined, cut 2 holes in the wall large enough to accommodate the pipe.
VENTING ARRANGEMENTS Power Vent Vertical Figure 36 Power Vent Horizontal Figure 37 Direct Vent Vertical Figure 38 Direct Vent Horizontal Figure 39 33
VENTING ARRANGEMENTS Direct Vent Vertical Vent Horizontal Intake Figure 40 Direct Vent Horizontal Vent Vertical Intake Figure 41 Direct Vent Horizontal Concentric Direct Vent Vertical Concentric Figure 42 Direct Vent Horizontal Low Profile Figure 43 Figure 44 34
TERMINATION CLEARANCES SIDEWALL POWER VENT POWER VENT (using room air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION G V D H A v E L v B FI XE D CLOSED V F OPERABLE V B B C OPERABLE V B B FI XE D CLOSED V M X V K J A X V B V X VENT TERMINAL AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED Figure 45 Vent terminal clearances for “Power Vent” installations. Power Vent configurations use room air for combustion.
TERMINATION CLEARANCES SIDEWALL DIRECT VENT DIRECT VENT (using outdoor air for combustion) EXTERIOR CLEARANCES FOR SIDEWALL VENT TERMINATION G V D H A v E L v B FI XE D CLOSED V F B B C OPERABLE V OPERABLE V B B FI XE D CLOSED V M X V K J A X V B V VENT TERMINAL X AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED Figure 46 Vent terminal clearances for “Direct Vent” installations. Direct Vent configurations use outdoor air for combustion.
WATER HEATER INSTALLATION CONDENSATE DRAIN INSTALLATION 2. The field installed condensate drain line must not be less than 1/2 inch PVC in size. Installation must conform with these instructions and local building codes. 3. DO NOT remove, modify or alter the factory condensate trap. INSTALLATION INSTRUCTIONS 1. Ensure the water heater’s on/off switch is in the “off” position. 2.
SUPPLY GAS LINE INSTALLATION GAS LINE SIZING Contact your local gas utility company to ensure that adequate gas service is available and to review applicable installation codes for your area. DO NOT use flexible gas piping. Minimum required supply gas line sizes are shown in Table 5 on page 13. Depending on the developed equivalent length and/or the number of appliances connected to a common main, the size of supply gas lines may have to be increased.
GAS LINE CONNECTION be replaced, it must be replaced with 105°C rated wiring or its equivalent, except in the burner housing. In this case 200°C rated wire must be used. DEDICATED POWER WIRING AND BREAKERS Dedicated power supply wires, ground wiring and dedicated circuit breakers often prevent electrical line noise and are required when installing the water heater. 1. The water heaters covered by this manual are shipped from the factory with a 1 1/2” supply gas connection, see Table 1 on page 10.
WATER (POTABLE) HEATING AND SPACE HEATING 1. All water piping components connected to the water heater that are for space heating applications shall be suitable for use with potable water. 2. Toxic chemicals, such as those used for boiler treatment, must NEVER be introduced into this system. 3. The water heaters covered in this manual may never be connected to any existing heating system or component(s) previously used with non-potable water heating appliance. 4.
TEMPERATURE REGULATION HIGH TEMPERATURE LIMIT CONTROL (ECO) TABLE 15 This water heater is equipped with an ECO (energy cut off) non adjustable high temperature limit switch. The ECO is a normally closed switch that opens (activates) on a rise in temperature. The ECO is located inside the Upper Temperature Probe (two red wires), see Figure 3 on page 8 for location. The ECO switch contacts will open when the water temperature reaches approximately 202°F (94°C) and close at approximately 140°F (49°C).
CONTROL SYSTEM OPERATION OVERVIEW User Input Buttons • The up and down buttons are used to navigate menus and adjust user settings. • The operational buttons are used to enter/exit menus, select menu items, activate adjustment modes and confirm or cancel new user settings. The operational buttons are multifunctional, their current function is defined by the text that appears directly above each button on the LCD screen.
STATUS ICONS The Status Icons are displayed on the Desktop screen and convey operational and diagnostic information. The icons are described in the table below. See Figure 54 on page 55 and the Sequence Of Operation on page 54. TABLE 16 Icon Description Water temperature in the tank has fallen. Shaded area of the animated thermometer icon will rise and fall in response to water temperature in the storage tank as sensed from the Upper and Lower Temperature Probes.
OPERATING STATES The current operational state of the water heater is displayed on the Desktop screen as the "Status." The common operational states are described in the table below. See Figure 54 on page 55 and the Sequence Of Operation on page 54. TABLE 17 State Description Standby The water heater is not in an active heating cycle. IE: the Tank Temperature is at or above the Operating Set Point.
USER SETTINGS & CONTROL SYSTEM MENUS TEMPERATURES MENU Operating Set Point And Differential Adjustment The Operating Set Point is adjustable from 90°F (42°C) to 180°F (82°C). The factory setting is 120°F (49°C). The Differential is adjustable from 2° to 20°. The factory setting is 8°. These user settings are accessed from the Temperatures menu. The following instructions will explain how to adjust these settings and navigate the control system menus.
TEMPERATURES MENU (CONT) DESCRIPTION/ACTION DISPLAY • Tank Temperature - non adjustable - control system sensed temperature (averaged from upper and lower temperature probes). • Upper Temperature - non adjustable - control system sensed temperature from the Upper Temperature Probe. • Lower Temperature - non adjustable - control system sensed temperature from the Lower Temperature Probe. • Tank Probe Offset - adjustable user setting, range -5° to +5° (factory setting 0°).
DISPLAY SETTINGS DESCRIPTION/ACTION DISPLAY Select Display Settings from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains adjustable display options for viewing information on the UIM’s LCD screen. Use the Up & Down Buttons to navigate the menu. Display Settings • Temperature Units - Adjustable user setting that changes temperature units display to Celsius °C or Fahrenheit °F.
CURRENT FAULT DESCRIPTION/ACTION DISPLAY Select Current Fault from the Main Menu and press the Operational Button under "SELECT" to enter this menu. This menu contains non adjustable operational information. Use the Up & Down Buttons to navigate the menu. Blocked Exhaust This menu contains the current Fault or Alert error message. The time the Fault or Alert message occurred appears directly below. A brief description of what causes the particular Fault or Alert condition appears below that.
SERVICE CONTACT INFORMATION The control system has a discrete menu that Installing contractors and/or service agents can access to enter contact information for their customers. This contact information will be displayed with all Fault and Alert messages. DESCRIPTION/ACTION DISPLAY From the Desktop Screen (see Figure 52 on page 42) press and hold down the middle (unmarked) Operational Button for 30 seconds and then release it.
START UP PRIOR TO START UP 1. Close the Main Gas Shutoff Valve, see Figure 48 on page 38. Installation and start up of this water heater requires abilities and skills equivalent to that of a licensed tradesman in the field involved, see Qualifications on page 6. 2. Purge all air from the supply gas line up to the water heater’s Main Gas Shutoff Valve. 3. When all air has been purged from the supply gas line, tighten all supply gas line connections.
If the supply gas pressure to the water heater is not between the required minimum and maximum values given in Table 4 on page 13 adjust the supply gas regulator as necessary. Adjust the supply gas regulator(s) per the regulator manufacturer’s instructions to achieve the required “static” and “dynamic” supply gas pressure.
HIGH ALTITUDE INSTALLATIONS The water heaters covered by this manual are certified for use without modification for altitudes up to 10,100 feet. Most gas utility companies de-rate their gas for high altitudes, making it unnecessary to install high altitude orifices. Fire and Explosion Hazard For installations above 10,100 feet call the technical support phone number listed on the back cover of this manual for further technical assistance.
LIGHTING & OPERATION LABEL The instruction label below is affixed to the water heater's covered by this manual at the factory and must be followed when lighting and operating the water heater.
TROUBLESHOOTING INSTALLATION CHECKLIST SEQUENCE OF OPERATION The list below represents some of the most critical installation requirements that, when overlooked, often result in operational problems, down time and needless parts replacement. This is not a complete list. Before performing any troubleshooting procedures use the list below to check for installation errors. Costs to correct installation errors are not covered under the limited warranty.
SEQUENCE OF OPERATION FLOW CHART If tank temperature drops below Operating Set Point minus Differential setting a heating cycle is activated Control System performs diagnostic checks Normal State of all pressure switches and ECO are checked Blower Prover pressure switch verified open All other pressure switches and ECO are verified closed NO Control System Locks Out Displays Fault Msg Combustion Blower is energized Pre-Purge cycle Blower Prover switch contacts confirmed closed by control system NO Sp
OPERATIONAL PROBLEMS • • Read and understand this instruction manual and the safety messages herein before installing, operating or servicing this water heater. • Failure to follow these instructions and safety messages could result in death or serious injury. • This manual must remain with the water heater. • requirements (erratic gas supply volume/pressures) - see Supply Gas Regulator on page 13. Excessive supply gas pressure - see Table 4 on page 13 and Supply Gas Pressure Adjustment on page 50.
ALERT CONDITIONS • Colder incoming water temperature lengthening the time required to heat water to desired temperature. • Hot water piping leaks, open faucets, water heater drain valve leaking or open. • Sediment or lime scale accumulation may be affecting water heater operation. See Maintenance on page 60 for sediment and lime scale removal procedures. • Water heater not firing at full input rating. Check actual firing rate of the water heater, see instructions on page 51.
FAULT AND ALERT MESSAGES Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE • The control system has failed to ignite the Main Burner. • Water heater is not properly grounded, loose or open ground wire to the Main Burner - see Power Supply Connections on page 39.
FAULT AND ALERT MESSAGES (CONT) Call the technical support phone number listed on the back cover for further technical assistance or to locate a qualified service agent in your area. POSSIBLE CAUSES - CHECK/REPAIR DISPLAYED FAULT/ALERT MESSAGE • The control system has detected the Blower Prover Switch contacts are closed when they should be open at the beginning of a heating cycle - see the Sequence Of Operation on page 54.
MAINTENANCE GENERAL MAINTENANCE SCHEDULE Keep water heater area clear and free from combustible materials, gasoline, and other flammable vapors and liquids. See Locating The Water Heater on page 11. TABLE 19 COMPONENT Water heater maintenance includes periodic tank flushing and cleaning, and removal of lime scale. The water heater should be inspected and adjusted to maintain proper combustion. See Initial Start Up on page 50. A periodic inspection of the venting system should be made.
To Flush the tank perform the following steps: 1. Turn off the electrical supply to the water heater. TANK CLEANOUT OPENING 2. Ensure the cold water inlet valve is open. 3. Open a nearby hot water faucet and let the water run until the water is no longer hot. Then close the hot water faucet. CLEANOUT ACCESS PANEL CLEANOUT GASKET 4. Connect a hose to the drain valve and terminate it to an adequate drain. 5. Ensure the drain hose is secured before and during the entire flushing procedure.
TABLE 20 TEMPERATURE-PRESSURE RELIEF VALVE UN-LIME® PROFESSIONAL DELIMER Part Number Description 9005416105 4 - 1 gallon (case) 9005417105 1 - 5 gallon POWERED ANODE RODS DISCHARGE PIPE To insure a long, trouble-free operating life, the water heaters covered in this manual are factory equipped with a powered anode system. The anode rods are of a permanent design and do not need replacing unless damaged. Inspection and cleaning should be performed once a year.
DIAGRAMS CCB - CENTRAL CONTROL BOARD LAYOUT CCB (CENTRAL CONTROL BOARD) 6 5 4 J16 3 2 1 J13 J3 8 7 6 5 J5 4 3 2 1 J9 4 7 8 9 10 11 12 3 1 2 3 J14 4 5 6 3 1 4 2 J15 8 5 4 3 2 1 2 1 J4 4 3 2 J10 1 2 J17 6 5 1 4 3 2 1 1 8 7 9 4 6 J1 1 3 J12 3 2 1 2 J6 4 3 2 1 Figure 57 63 6 5 4
1 Blue No factory connections Ferrite Bead 6 White/Green 5 Orange 4 Blue White / Blue 2 White/Blue 1 White/Red White / Red CCB J16 Low Voltage In Transformer Secondary Transformer Primary White Transformer Neutral 120 to Spark 4 White/Green 3 Orange Green Black Spark Module 0 to 10V Speed f-back Dgnd 24V enable Drive enable Gas Valve Power Switch CCB J6 120V Out BLOWER FEEDBACK Splice Power Supply 24Vureg CCB J17 Low Voltage Field 2 White 3 Black Power Supply J1 3 Yellow 2 White/Gre
CIRCULATION PUMP WIRING DIAGRAMS CIRCULATING PUMP WIRING DIAGRAM STORAGE TANK OR BUILDING RECIRCULATION NOTE: USE SEPARATE 120 VAC POWER SUPPLY FOR PUMP CIRCUIT. DO NOT SHARE POWER WITH APPLIANCE AS THIS MAY CAUSE ELECTRICAL LINE NOISE AND LEAD TO ERRATIC CONTROL SYSTEM OPERATION.
HOT WATER TO FIXTURES EXPANSION TANK COLD WATER SUPPLY WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP HOT WATER RETURN TEMPERATURE GAGE DRAIN PRESSURE RELIEF VALVE CHECK VALVE TEMPERATURE CONTROL PROBE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
EXPANSION TANK TEMPERED WATER OUTLET HOT WATER RETURN OUTLET PIPE T&P TO OPEN DRAIN COLD HOT CIRCULATING PUMP PRESSURE RELIEF VALVE TEMPERATURE & PRESSURE RELIEF VALVE MIXING VALVE FULL PORT BALL VALVE DRAIN TEMPERATURE CONTROL PROBE LEGEND WATER FLOW SWITCH TEMPERATURE GAGE CHECK VALVE 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
ALT. COLD WATER CONNECTION EXPANSION TANK COLD WATER SUPPLY WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP HOT WATER RETURN TEMPERATURE GAGE DRAIN PRESSURE RELIEF VALVE HOT WATER TO FIXTURES CHECK VALVE TEMPERATURE CONTROL PROBE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
STORAGE TANK ALTERNATE LOCATION EXPANSION TANK COLD WATER SUPPLY CIRCULATING PUMP HOT WATER RETURN WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP HOT WATER TO FIXTURES TEMPERATURE GAGE CHECK VALVE DRAIN TEMPERATURE CONTROL PROBE PRESSURE RELIEF VALVE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
PIPE T&P TO OPEN DRAIN EXPANSION TANK COLD WATER SUPPLY WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP HOT WATER RETURN TEMPERATURE GAGE DRAIN PRESSURE RELIEF VALVE CHECK VALVE TEMPERATURE CONTROL PROBE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
PIPE T&P TO OPEN DRAIN PIPE T&P TO OPEN DRAIN WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP EXPANSION TANK COLD WATER SUPPLY HOT WATER RETURN TEMPERATURE GAGE DRAIN PRESSURE RELIEF VALVE CHECK VALVE TEMPERATURE CONTROL PROBE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
PIPE T&P TO OPEN DRAIN PIPE T&P TO OPEN DRAIN PIPE T&P TO OPEN DRAIN WATER FLOW SWITCH FULL PORT BALL VALVE CIRCULATING PUMP EXPANSION TANK COLD WATER SUPPLY HOT WATER RETURN TANK TEMPERATURE CONTROL TEMPERATURE GAGE DRAIN PRESSURE RELIEF VALVE CHECK VALVE TEMPERATURE CONTROL PROBE TEMPERATURE & PRESSURE RELIEF VALVE LEGEND 7. If a pump is being installed in a recirculation loop between the water heater and a commercial dishwasher wire according to Figure 63 and Figure 64 on page 64. 6.
NOTES 73
NOTES 74
LIMITED WARRANTY A. O. Smith Corporation, the warrantor, extends the following LIMITED WARRANTY to the owner of this water heater. 1. THE TANK If the glass-lined tank in this water heater shall prove upon examination by the warrantor to have leaked due to natural corrosion from potable water therein, during the first THREE years after initial installation, the warrantor will supply a replacement tank less burner and controls or a complete new A. O.
500 Tennessee Waltz Parkway, Ashland City, TN 37015 Technical Support: 800-527-1953 • Parts: 800-433-2545 • Fax: 800-644-9306 www.hotwater.
