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POWER VENTED GAS WATER HEATER
A Spanish language version of these instructions is available by contacting the
company listed on the rating plate.
La version espanola de estas instrucciones se puede obtener al escribirle a la
fabrica cuyo nombre aparece en la placa de especificaciones.
INSTALLATION AND OPERATING
INSTRUCTION MANUAL
WARNING:
If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury, or death.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors and liquids in the
vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance.
•
Do not touch any electrical switch; do not use any
phone in your building.
•
Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
•
If you cannot reach your gas supplier, call the fire
department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
For your family's comfort, safety and convenience we
recommend this water heater be installed and serviced by a
plumbing professional.
238-45917-00F REV 3/08
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Summary of Contents for Bradford White POWER VENTED GAS WATER HEATER
- Page 1 POWER VENTED GAS WATER HEATER A Spanish language version of these instructions is available by contacting the company listed on the rating plate. La version espanola de estas instrucciones se puede obtener al escribirle a la fabrica cuyo nombre aparece en la placa de especificaciones.
- Page 2 This installation, operation and instruction manual will explain in detail the installation and maintenance of your new Power Vented Gas Water Heater. We strongly recommend that you contact a plumbing professional for the installation of this water heater.
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Page 3: Table Of Contents
TABLE OF CONTENTS page GENERAL INFORMATION..............INSTALLATION.................. Locating The Water Heater............Minimum Clearances ..............Venting ..................Specifications for 25 Gal (94.6 L) 48 Gal (181.6 L) 55 Gal (208.2 L) 65 Gal (246.0 L) 75 Gal (283.9 L)..............11 Specifications for 40 Gal (151.4 L) 50 Gal (189.2 L).............. -
Page 4: General Information
GENERAL INFORMATION This gas-fired water heater’s design is certified by CSA International under the American National Standard Z21.10.1, CSA 4.1-M, Z21.10.3 and CSA 4.3 most current editions at the time of manufacture. This water heater must be installed in accordance with local codes or, in the absence of local codes, the National Fuel Gas Code, ANSI Z223.1-Latest Edition) and/or in Canada CAN/CGA B149 Installation Codes (Latest Editions). -
Page 5: Installation
General Information continued- A sacrificial anode is used to extend tank life. The removal of this anode, for any reason, will nullify the warranty. In areas where water is unusually active, an odor may occur at the hot water faucet due to a reaction between the sacrificial anode and the impurities in the water. - Page 6 Installation (Locating The Water Heater) continued- Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors. Examples of some typical compounds that are potentially corrosive are: spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes and process chemicals.
- Page 7 Installation (Locating The Water Heater) continued- WARNING DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE FOLLOWING: • Liquefied petroleum gases/propane gas and natural gas have an odorant added by the gas supplier that aids in the detection of the gas.
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Page 8: Minimum Clearances
Minimum Clearances WARNING Failure to adhere to these installation and operating instructions may create a hazard to life and property and will nullify the warranty. This installation must allow access to the front of the water heater and adequate clearance must be provided for servicing and operating this water heater. - Page 9 Venting continued- Canadian US Installations Installations Clearance above grade, veranda, 12 inches (30 12 inches porch, deck or balcony (30 cm) Clearance to window or door that may 12 inches (30 4 feet (1.2 m) below or be opened to the side of opening; 12 inches (30 cm) above opening Clearance to permanently closed...
- Page 10 Venting continued- Vent pipes serving power vented appliances are classified by building codes as “vent connectors”. Required clearances from combustible materials must be provided in accordance with information in this manual under LOCATION OF WATER HEATER and CLEARANCES, and with National Fuel Gas Code and local codes.
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Page 11: Gal (208.2 L) 65 Gal (246.0 L) 75 Gal (283.9 L)
Part I - Venting Specifications for: 25 Gallon (94.6 L), 48 Gallon (181.6 L), 55 Gallon (208.2 L), 65 Gallon (246.0 L) 75 Gallon (283.9 L) NOTE: Properly sized PVC, CPVC, or ABS* pipe must be used. This water heater is a power vented appliance and is designed to vent its products of combustion through 3”... - Page 12 Venting (Part I) continued- TABLE 2 -VENT CONNECTOR LENGTHS FOR 4” (10.2 cm) DIAMETER VENT PIPE Terminating Maximum straight # of 90° Length ft (m) straight Elbows Length 48, 65 gal. 25, 55 and ft (m) 75 gal. Through the Wall 175 (53.3) 175 (53.3) 10 (3.1)
- Page 13 Venting (Part I) continued- THROUGH THE WALL VENTING: (HORIZONTAL VENTING) Cut a 3 1/2 in. (8.9 cm) diameter hole in the wall at the point where the vent connector is going to pass through the wall. Use the proper cement to secure the 90°...
- Page 14 Venting (Part I) continued- THROUGH THE ROOF VENTING: (VERTICAL VENTING) Cut the necessary holes through the roof and ceiling and install the vent connector as shown in Figure 4. Make sure that the installation meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code (latest edition).
- Page 15 Venting (Part I) continued- THROUGH THE WALL VENTING WITH LOW GROUND CLEARANCE: When venting cannot exit through the wall at a height greater than or equal to 12” (30.5 cm) above the ground, or anticipated snow level, the installation must be modified as shown below (see Figure 5).
- Page 16 Venting (Part I) continued- TABLE 3 3” (7.6 cm) VENT CONNECTOR LENGTHS FROM INSIDE WALL FOR LOW GROUND CLEARANCE INSTALLATIONS Terminating # of Max Straight Elbows Length ft (m) straight Length 48,65 25, 55 gal. ft (m) and 75 gal. 40 (12.2) 30 (9.1) 5 (1.5)
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Page 17: Specifications For 40 Gal (151.4 L) 50 Gal (189.2 L)
Part II - Venting Specifications for: 40 Gallon (151.4 L) 50 Gallon (189.2 L) This water heater is a power vented appliance and is designed to vent its products of combustion through 2” (5.1 cm) or 3” (7.6 cm) diameter Schedule 40 (solid or cellular core) vent pipe to the outdoors. - Page 18 Venting (Part II) continued- TABLE 6 VENT CONNECTOR LENGTHS FOR 3” (7.6 cm) DIAMETER VENT PIPE Terminating # of 90° Elbows Max straight Min straight Length Length (excluding vent ft (m) ft (m) terminal) Through the Wall 115 (35) 10 (3.1) Through the Wall 110 (33.5) 10 (3.1)
- Page 19 Venting (Part II) continued- IMPORTANT All of the Venting connections must be leak checked with a soap and water solution upon initial start up of the water heater. Any leaks must be repaired before continuing operation of the water heater. NOTE: Properly sized PVC, CPVC or ABS pipe must be used.
- Page 20 Venting (Part II) continued- THROUGH THE ROOF VENTING: (VERTICAL VENTING) Cut the necessary holes through the roof and ceiling and install the vent connector as shown in Figure 8. Make sure that the installation meets the local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or CGA/CAN B149 Installation Code (latest edition).
- Page 21 Venting (Part II) continued- THROUGH THE WALL VENTING WITH LOW GROUND CLEARANCE: When venting cannot exit through the wall at a height greater than or equal to 12” (30.5 cm) from the ground or from the anticipated snow level, then the installation must be modified as shown below (see Figure 9).
- Page 22 Venting (Part II) continued- TABLE 7 2” (5.1 cm) VENT PIPE LENGTHS FROM INSIDE WALL FOR LOW GROUND CLEARANCE INSTALLATIONS Terminating # of Max straight Min straight Elbows Length ft (m) Length ft (m) 30 (9.1) 2 (.6) (2) 90° Elbows with Vent Terminal 25 (7.6) 2 (.6) (2) 90°...
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Page 23: Vent Pipe Preparation And Joining
Vent Pipe Preparation and Joining Most failures in vent systems result from improper preparation and joining of pipe and fittings. The guidelines below must be followed when installing the venting system. If you have any question about the application or installation of the venting system, contact the vent pipe manufacturer, supplier, or your plumbing professional. - Page 24 Vent Pipe Preparation and Joining continued- d) Cementing must be done quickly to avoid over-drying before joining. Apply one coat to the outside end of the pipe at a width slightly greater than the depth of the socket. ii) Apply a coat around the inside of the fitting socket. iii) Apply a second coat around the end of the pipe.
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Page 25: Combustion Air Supply
Combustion Air Supply WARNING Liquefied petroleum gases/propane gas are heavier than air and will remain at floor level if there is a leak. Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation of leaking gas. Before lighting, smell all around the appliance area for gas. - Page 26 Installation (Combustion Air Supply) continued- All Air From Inside the Building: The confined space must be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space.
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Page 27: Water Connections
Water Connections NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE. After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater. - Page 28 Water Connections continued- WARNING For protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials as meeting the requirements of the Standard for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANS Z21.22 or the Standard CAN1-4.4.
- Page 29 Water Connections continued- WARNING Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink before you use any electrical appliance which is...
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Page 30: Gas Connections
Gas Connections The gas supply lines must meet all requirements of the National Fuel Gas Code (ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition). The minimum permissible gas supply pressure for the purpose of input adjustment is one (1.0) inch (0.25 kPa) water column above the operating manifold pressure. -
Page 31: Electrical Connections
Electrical Connections All electrical wiring and connections must be in accordance with the National Electric Code ANSI/NFPA No. 70 (latest edition), or the Canadian Electrical Code C22.1 (latest edition) and any local codes which may apply. The water heater must be electrically grounded. If a flexible line cord and plug is permitted by local code, then provide a (3) three wire grounding type receptacle within 6 feet (1.9 m) of the water heater and use the flexible cord provided. -
Page 32: Wiring Diagram
Wiring Diagram Figure 10... -
Page 33: General Operation
GENERAL OPERATION WARNING Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against the water heater or vent-air intake system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake system. UNDER NO CIRCUMSTANCES MUST FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM... -
Page 34: Lighting And Shutdown Instructions
Lighting and shutdown instructions ⌧ ⌧ ⌧ ⌧ ⌧... -
Page 35: Thermostat Adjustment
Thermostat Adjustment The thermostat dial is adjusted to approximately 120°F (49°C) when shipped from the factory. When adjusting the thermostat, it should be remembered that lower temperature settings are more energy efficient. To adjust the thermostat turn the dial clockwise until the minimum acceptable temperature is set. It is suggested that the starting point setting not exceed the 120°F (49°C) or “HOT”... -
Page 36: Burner Flame Check
Burner Flame Check Cast Iron Burner: At the time of installation and at periodic intervals (not more than 6 months), a visual check of the main burner and pilot flames should be made to determine if they are burning properly. For ideal operation, the gas and air must be properly proportioned. -
Page 37: Maintenance
MAINTENANCE WARNING Water heaters are heat producing appliances. To avoid damage or injury there must be no materials stored against the water heater or vent-air intake system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and vent-air intake system. UNDER NO CIRCUMSTANCES MUST FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER, VENT-AIR INTAKE SYSTEM OR IN... - Page 38 Maintenance continued- 5. Annually remove the inner door and main burner assembly to clean orifices and related parts of any dirt or other foreign material. Inspect the burner ports for obstructions or debris and clean with a wire brush as needed. Wire brush and/or vacuum clean the combustion chamber as needed to remove scale deposits and debris.
- Page 39 Maintenance continued- CAUTION FOR YOUR SAFETY. DO NOT ATTEMPT REPAIR OF COMBINATION GAS CONTROL, BURNERS OR GAS PIPING. REFER REPAIRS TO A QUALIFIED SERVICE TECHNICIAN. Contact your supplier or plumbing professional for replacement parts or contact the company at the address given on the rating plate of the water heater. Provide the part name, model and serial numbers of the water heater when ordering parts.
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Page 40: Troubleshooting
TROUBLESHOOTING LED Status Control Status Probable Cause None (LED not on or Electrical power not Control power switch in “OFF” position. flashing) present. Supply voltage interuppted. Stand-by mode, One short flash every Thermostat is satisfied Temperature demand is satisfied (no call for heat). four seconds (no faults). - Page 41 Troubleshooting continued- LED Status Control Status Probable Cause 1. Unstable pilot. 2. Pilot tube blocked or restricted. Six flashes-three Pilot flame extinguished. 3. Oxidation build up on pilot electrode. flashes, three second System resets after 5 4. Wire damage to pilot assembly or bad pause (Soft lockout) minutes.
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Page 42: Parts List Drawing
PARTS LIST DRAWING (ACTUAL WATER HEATER VISUAL REPRESENTATION MAY VARY) PARTS LIST PART NAME AND DESCRIPTION 1. Blower Assembly 11. Diptube–Nipple 2. Pressure Switch (not shown) 12. Anode–Nipple 3. Blower temp. switch (not shown) 13. Air Shutter (Cast Iron Only) 4. -
Page 43: Space Heating
THE FOLLOWING INSTRUCTIONS ARE FOR INSTALLATION OF: GAS WATER HEATERS SUITABLE FOR WATER (POTABLE) HEATING AND SPACE HEATING 1. All piping components connected to this water heater for space heating applications must be suitable for use with potable water. In Massachusetts, space heating piping length must not exceed 50 feet. -
Page 44: Notes
NOTES... - Page 45 Gas Water Heaters SERVICE MANUAL Troubleshooting Guide and Instructions for Service (To be performed ONLY by qualified service providers) For Bradford White Series Models: ® M2TW75T*(BN,CX) TW475S76(B,C)* (N,X) (*) Denotes Warranty Years Manual 47150A Save this manual for future reference...
- Page 46 Bradford White TTW Series Gas Water Heaters Table of Contents Page TTW Service Procedure Introduction - - - How to use this manual - - - Tool required for service - - - Specifications - - - Control Timings - - -...
- Page 47 CAUTION WARNING: If the information in these Incorrect operation of this instructions is not followed exactly, a fire or appliance may create a hazard to explosion may result causing property damage, life and property and will nullify the personal injury, or death. warranty.
- Page 48 Introduction The new Bradford White TTW2 & TW4 water heaters are designed to provide reliable performance with enhanced standard features. New design features include reliable spark to pilot ignition system, enhanced diagnostics, simplified servicing, significantly quiet operation and additional vent lengths.
- Page 49 In some difficult to diagnose conditions, it may be necessary to isolate the heater from the vent system to determine the problem. Contact the Bradford White technical support group immediately if diagnosis can not be made using the methods described in this service manual.
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Page 50: Specifications
Specifications Power supply Dedicated 115VAC, 60 Hz, 15A Gas Supply Pipe Minimum 1/2" NPT (schedule 40 black iron pipe recommended) Approved Gas Type Natural or Propane. Unit must match gas type supplied. Gas Pressure 5.0" W.C. min. for Nat gas, 11.0" W.C. min. for L.P. gas, 14.0" W.C. maximum (Nat. & L.P.) Venting System Power vent through the wall or vertical through the roof Approved Vent Materials... - Page 51 Specifications Vent Tables Venting Specifications: 3" Diameter (7.6 cm) PVC Vent Connector Lengths # of Maximum Minimum Terminating Elbows Length ft (m) Length ft (m) Through the Wall 45 (13.7) 2 (.6) Through the Wall 40 (12.2) 2 (.6) Through the Wall 35 (10.7) 2 (.6) Through the Wall...
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Page 52: Control Timings
Specifications Control Timings Ignition State Timing Pre-purge 2 Seconds Trial for Ignition 90 Seconds Flame Stabilization Period 3 Seconds Inter-purge 15 Seconds Flame Failure Response Time 1.5 Seconds (2 second. Maximum; 1 second minimum.) Post-purge 15 Seconds PS Fault Delay (failed open/close) Retry after 2 Minutes Soft Lockout Retry after 5 Minutes... -
Page 53: Sequence Of Operation
Sequence of Operation Power up Sequence Start Up. Upon power up, the control runs a safe-start check with a typical start-up delay of 1-5 seconds. Simulated Resistive Load Device Check. To assure no outputs are energized if the “Simulated Resistive device” is out of range, the control will test the the device for proper operating range. - Page 54 Sequence of Operation Normal Heating Sequence (cont.) Steady state operation. During Steady State Operation the Control Monitors: Thermostat temperature sensor- When set point temperature is satisfied, gas valve is shut down and blower will post purge for 15 seconds. Control LED flashes a short flash once every 4 seconds (idle) status code.
- Page 55 Sequence of Operation Abnormal Operation (cont.) 3. Pressure Switch/Blower Temperature Fault: a) Pressure switch closed at start of call for heat - The gas control waits four seconds then, proceeds to flash 2 times with 3 second pause. The control waits 2 minutes and then turns on blower for 30 seconds. The blower turns off after 30 seconds and the control waits for pressure switch to open.
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Page 56: Troubleshooting
Troubleshooting Green LED Observe green LED indicator on Indicator Electronic gas control. Error flash codes are displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below. Control Service LED Status Probable Cause Status Procedure... - Page 57 Troubleshooting Control Service LED Status Probable Cause Status Procedure 1. Unstable pilot. Failed to light 1. Page 14 2. Pilot tube blocked or restricted. Six-one flash, three pilot. 3. Oxidation build up on pilot electrode. second pause System auto 2-4. Page 16 4.
- Page 58 TTW SERVICE PROCEDURE I Burner Operation Inspection, Adjustment, Cleaning and Replacement Burner Inspection and Air Shutter Adjustment. At periodic intervals (every 6 months) a visual inspection should be made of the pilot and main burner for proper operation and to assure no debris is accumulating. Pilot flame should be stable, some causes for an unstable pilot flame are: a) Water heater vent is less than the allowable vent length.
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Page 59: Burner Cleaning
TTW SERVICE PROCEDURE I Burner Operation Inspection, Adjustment, Cleaning and Replacement Burner Cleaning Step 1. Position gas control power switch to the “OFF” position and unplug heater from wall outlet. Remove Outer Step 2. Turn off gas supply to water heater. door. -
Page 60: Pilot Testing, Cleaning And Replacement
TTW SERVICE PROCEDURE II Pilot testing, Cleaning and Replacement Pilot Inspection, Testing and Replacement Step 1. Position gas control power switch to the “OFF” position and unplug heater from wall outlet. Remove Outer door. Step 2. Turn off gas supply to water heater. Remove Step 3. - Page 61 TTW SERVICE PROCEDURE III Pressure Switch Testing and Replacement Pressure Switch Testing WARNING 120 volt potential exposure. Use caution Step 1. Position power switch on gas control making voltage checks to avoid personal injury. to the “OFF” position. Step 2. Remove the three screws (Phillips screw driver) from control access cover on blower assembly and remove cover (see photo 1).
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Page 62: Pressure Switch Testing And Replacement
TTW SERVICE PROCEDURE III Pressure Switch Testing and Replacement Pressure Switch Replacement WARNING 120 volt potential exposure. Use caution to avoid personal injury. Step 1. Position gas control power switch to “OFF” position. Step 2. Remove the three screws (Phillips screw driver) from control access cover on blower assembly and remove cover (see photo 3). - Page 63 TTW SERVICE PROCEDURE IV Blower Testing and Replacement WARNING Blower Testing 115 volt potential exposure. Use caution when making voltage checks to avoid personal injury. Step 1. Position gas control power switch to “ON” position and adjust control to call for heat. Step 2.
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Page 64: Blower Testing And Replacement
TTW SERVICE PROCEDURE IV Blower Testing and Replacement Blower removal Step 1. Position gas control power switch to the “OFF” position. Step 2. Unplug blower power cord from wall outlet. Remove exhaust adapter and retain for use on new blower. Step 3. -
Page 65: Blower Temperature Switch Testing And Replacement
TTW SERVICE PROCEDURE V Blower Temperature Switch Testing and Replacement Blower Temperature Switch WARNING Testing. 120 volt potential exposure. Use caution to avoid personal injury. Step 1. Position power switch on gas control to the “OFF” position. Step 2. Remove the three screws (Phillips screw driver) from control access cover on blower and remove cover (see photo 14). - Page 66 TTW SERVICE PROCEDURE V Blower Temperature Switch Testing and Replacement Blower Temperature Switch WARNING Replacement. 120 volt potential exposure. Use caution to avoid personal injury. Step 1. Position gas control power switch to the “OFF” position and unplug heater from wall outlet. Step 2.
- Page 67 TTW SERVICE PROCEDURE VI Gas Control/Thermal Well Testing and Replacement Gas Control Testing See pages 24 & 25 for gas control input & output testing. Thermal Well Testing Position gas valve power Disconnect thermal switch to the “OFF” well wire harness position and disconnect thermal well harness from gas control.
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Page 68: Gas Control & Thermal Well Testing & Replacement
TTW SERVICE PROCEDURE VI Gas Control/Thermal Well Testing and Replacement WARNING Stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Determine Water Temperature Inside Tank Note: It is important to understand once the resistance for the thermal well is determined from page 23, water flow through the heater should not occur. - Page 69 TTW SERVICE PROCEDURE VI Gas Control & Thermal Well Testing and Replacement Gas Control & Thermal Well Removal From Water Heater Gas Control Step 1. Position gas valve power switch to the “OFF” Thermal position and Unplug Heater from power supply. Well Step 2.
- Page 70 TTW SERVICE PROCEDURE VI Gas Control & Thermal Well Testing and Replacement Gas Control Assembly to Thermal Well Step 1. Install threaded end of thermal well into tank. Be sure thermal well flange is positioned as shown in photo 24 for proper control alignment.
- Page 71 TTW SERVICE PROCEDURE VII Simulated Resistive Device Testing Simulated Resistive Device Testing Step 1. Position power switch on gas control to the “OFF” position. Step 2. Disconnect simulated resistive device from gas control. Step 3. Using a multi-meter set to the ohms setting check resistance of simulated resistive device.
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Page 72: Safety Circuit Voltage Trace
TTW SERVICE PROCEDURE VIII Safety Circuit Voltage Trace Safety Circuit Voltage WARNING Trace 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. NOTE: This procedure assumes a cool tank. Step 2. Remove three screws (Phillips Screw driver) from control access cover on blower and remove cover (see photo 26). -
Page 73: 115Vac Circuit Trace
TTW SERVICE PROCEDURE IX 120 VAC Trace WARNING 120 VAC Circuit Trace 120 volt potential exposure. Use caution making voltage checks to avoid personal injury. Step 1. Verify 120VAC and proper polarity at wall outlet. Step 2. With unit plugged in and control power switch in the “ON” position verify LED status. LED status LED status LED status... -
Page 74: Dip Tube Inspection And Replacement
TTW SERVICE PROCEDURE X Dip Tube Inspection and replacement Dip Tube Inspection and Replacement WARNING Water Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. Position on/off switch of gas control valve to “OFF”... -
Page 75: Anode Inspection And Replacement
TTW SERVICE PROCEDURE XI Anode Inspection and replacement Anode Inspection and Replacement WARNING Water Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. Position on/off switch of gas control valve to the “OFF” position and unplug water heater from wall outlet. -
Page 76: Flue Baffle Inspection And Replacement
TTW SERVICE PROCEDURE XII Flue Baffle Inspection and replacement Disconnect vent Remove blower to gain access to system from exhaust adapter. flue baffle Step 1. Position gas control power switch to the “OFF” position Blower Mounting and unplug blower from wall outlet. Screws Step 2. -
Page 77: Glossary Of Terms
Glossary of Terms British Thermal Units Gallons per Minute Hertz KW/h Kilowatts per hour Light Emitting Diode National Pipe Thread Ohms Ohms of resistance Pounds per Square Inch Revolutions per Minute Temperature Cut Off Volts Alternating Current W.C. Inches of Water Column °C Degrees Centigrade °F... - Page 78 NOTES Page 34...
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Page 79: Parts List
Parts List Optional 1. Blower Complete 13. Heat Trap Inlet 25. Cast Iron Burner 37. Gas Control 38. Gas Control Service 2. Air Mixing Inlet cover 14. Inlet Dip Tube 26. Pilot Assy. (L.P.) 3. Pressure Switch 15. Wire Harness 27. - Page 80 Email parts@bradfordwhite.com techserv@bradfordwhite.com www.bradfordwhite.com...
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