Bradford White Magnum D75T125E3N Installation & Operation Manual

Bradford White Magnum D75T125E3N Installation & Operation Manual

Gas-fired commercial water heater

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GAS-FIRED COMMERCIAL WATER HEATER
INSTALLATION/OPERATION MANUAL
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
-
Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
-
For your family' s comfort, safety and
convenience, it is recommended this
w ater heater be installed and serviced by
a plumbing professional.
WITH TROUBLESHOOTING GUIDE
WARNING: If the information in
these instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or death.
Do not try to light any appliance.
Do not touch any electrical sw itch; 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.
238-47675-00F 8/18

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  • Page 1 GAS-FIRED COMMERCIAL WATER HEATER WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
  • Page 2: Table Of Contents

    SECTION I: IMPORTANT INFORMATION READ CAREFULLY This gas-fired w ater heater is design certified by CSA International under the American National Standard, Z21.10.3 and CAN/CGA 4.3-M (as indicated on the rating plate). These standards are available from CSA Standards Association, 5060 Spectrum Way Mississauga, Ontario L4W 5N6 CANADA. This w ater heater must be installed in accordance w ith local codes.
  • Page 3 DANGER DO NOT store or use gasoline or other flammable, combustible, or corrosive vapors and/or liquids in the vicinity of this or any other appliance. This water heater is equipped with an adjustable thermostat to control water temperature. Hot water temperatures required for automatic dishwasher and laundry use can cause scald burns resulting in serious personal injury and/or death.
  • Page 4 WARNING This water heater needs fresh air for safe operation and must be installed so there are provisions for adequate combustion and ventilation air. Insufficient air supply will cause a recirculation of combustion products resulting in contamination that may be hazardous to life. This will result in carboning or sooting of the combustion chamber, burners, and flue tubes and creates a risk of asphyxiation.
  • Page 5: Specifications

    SECTION II: SPECIFICATIONS Non-Flue Damper Models and Flue Damper Models (Figure 1) Model Description Input (BTU/hr) Capacity (in) (in) (in) (in) (in) (in) (GAL) Nat. 199,999 199,999 75.00 64.75 56.50 4.63 250,000 250,000 75.00 64.75 56.50 4.63 270,000 75.00 64.75 56.50 4.63 300,000 300,000 75.44 64.75 56.50 4.63 399,999 375,000 71.50 60.25 51.50 10.25 N/A 450,000 425,000 69.00 60.25 51.50 10.25 N/A...
  • Page 6 Flue Damper Models and Non-Flue Damper Models (Figure 3) Model Description (in.) Capacity Input (in.) (in.) (in.) (in.) (GAL) (BTU/hr) 155,000 51.00 43.50 35.00 33.75 Model Description Capacity Input (cm) (cm) (cm) (cm) (cm) (Litres) (kW/hr) 143.9 45.4 15.2 Non-Flue Damper Models (Figure 4) Model Description Cap.
  • Page 7 Non-Flue Damper Models (Figure 5) Model Description (in.) (in.) (in.) (in.) (in.) Capacity Input (GAL) (BTU/hr) 160,000 (155,000 70.13 67.13 65.00 54.50 Model Description (cm) (cm) (cm) (cm) (cm) Capacity Input (Liters) (kW/hr) 46.9 283.9 15.2 (45.4 LP) Flue Damper Models (Figure 5) Model Description (in.) (in.)
  • Page 8: General Information

    SECTION III: GENERAL INFORMATION FEATURES 1. Porcelain enamel lined tank provides corrosion protection with a tough glass lining on the interior of the tank. 2. Magnesium anodes provide an extra measure of protection and extends tank life. 3. Flue Damper on 24 volt ignition models reduces standby losses on the burner off cycle saving fuel. 4.
  • Page 9 DISHWASHING MACHINE REQUIREMENTS All dishwashing machines meeting the National Sanitation Foundation requirements are designed to operate with water flow pressures between 15 and 25 pounds per square inch. Flow pressures above 25 pounds per square inch, or below 15 pounds per square inch, will result in improperly sanitized dishes. The National Sanitation Foundation also recommends circulation of 180°F water.
  • Page 10: Installation Instructions

    SECTION IV: INSTALLATION INSTRUCTIONS WARNING INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING, GAS SUPPLY AND ELECTRICAL WORK ARE REQUIRED. DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE FOLLOWING: •...
  • Page 11 Minimum Clearances CAUTION The National Fuel Gas Code (ANSI Z233.1- latest edition) or in Canada The Natural Gas or Propane Installation Code CAN/CGA (B149.1, B149.2- latest edition), expressly prohibits the following: a. Installation of a w ater heater in a bathroom, bedroom, or any occupied room normally kept closed. b.
  • Page 12 UNPACKING INSPECT SHIPMENT carefully for any signs of damage. All equipment is carefully manufactured, inspected and packed. Any claims for damage or shortage in shipment must be filed immediately with the manufacturer noted on the rating plate label. LOCATE WATER HEATER in front of final position before removing crate. LOCATE so that venting connections will be short and direct.
  • Page 13 REMOVE CRATE Remove all banding and pry off crate sides carefully so as not to damage the water heater. Carefully roll/lift the water heater from the crate base. MOVE WATER HEATER TO PERMANENT POSITION by sliding or walking. Place drain pan underneath water heater INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE (if not already installed).
  • Page 14 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. The total input of all gas utilization equipment installed in the combined space must be considered in making this determination.
  • Page 15: Venting

    SECTION V: VENTING WARNING The venting system must be installed properly follow ing all local codes or in the absence of local codes, the latest edition of the National Fuel Gas Code (ANSI Z223.1- latest edition), or in Canada, The Natural Gas and Propane Installation Code (B149.1-00 latest edition).
  • Page 16 3. Secure the flue damper to the jacket top with sheet metal screws. 4. Connect the damper wiring plug to the damper wire harness connector on the side of the water heater. Note: The plug and connector can only be engaged one way (polarized). 5.
  • Page 17: Water Connections

    SECTION VI: 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. After the pressure has been relieved, close the faucet.
  • Page 18 WARNING Keep clear of combination temperature and pressure relief valve discharge line outlet. The discharge may be hot enough to cause scald injury. The water is under pressure and may splash. 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...
  • Page 19: Gas Connections

    SECTION VII: 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 20 WARNING Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against the water heater or direct vent system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and direct vent system. UNDER NO CIRCUMSTANCES SHOULD FLAMMABLE MATERIALS, SUCH AS GASOLINE OR PAINT THINNER BE USED OR STORED IN THE VICINITY OF THIS WATER HEATER OR IN ANY LOCATION FROM WHICH FUMES COULD REACH THE WATER HEATER.
  • Page 21: Electrical Connections

    SECTION VIII: ELECTRICAL CONNECTIONS Standing pilot Standing Pilot Wiring Diagram Robertshaw Gas Valve Honeywell Gas Valve Spark to Pilot (IID) ignition system. WARNING Turn off or disconnect the electrical power supply to the water heater before servicing. Label all wires prior to disconnection when servicing controls.
  • Page 22 Spark to Pilot Ignition (IID) Wiring Diagram...
  • Page 23: Operating Instructions

    SECTION IX: OPERATING INSTRUCTIONS Lighting And Shutdown Instructions Standing Pilot Models...
  • Page 24 Lighting and Shutdown Instructions Spark to Pilot Ignition (IID) Models...
  • Page 25 TEMPERATURE ADJUSTMENT APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS 120° F (49° C) More than 5 minutes 125° F (52° C) 1½ to 2 minutes 130° F (54° C) About 30 seconds 135° F (57° C) About 10 seconds 140° F (60° C) Less than 5 seconds 145°...
  • Page 26 your needs. NOTE: This water heater, when set at a lower temperature setting, is not capable of producing hot water of sufficient temperature for sanitizing purposes. During the winter season or any cold period, you may desire a higher temperature setting to adjust for the colder incoming water.
  • Page 27 To Increase Setpoint Temperature Step 1: Depress and hold “Temperature Up” button until desired setpoint temperature appears in the display.  °F idle Operational Status SELECT Step 1 Step 2: “Setpoint” indicator begins flashing in the display after pressing “Temperature Up” button. "Setpoint"...
  • Page 28 To Decrease Setpoint Temperature Step 1: Depress and hold “Temperature Down” button until desired setpoint temperature appears in the display. °F  idle Operational Status SELECT Step 1 Step 2: “Setpoint” indicator begins flashing in the display after pressing “Temperature Down” button. "Setpoint"...
  • Page 29 To Change Temperature Format in Display from °F to °C or ˚C to ˚F: Step 1: Press “SELECT” button until °F/°C is displayed. °F °F/°C idle Operational Status  SELECT Press Step 1 select Step 2: Press “SET” button to change temperature format. Symbol °F/°C will flash. °F °F/°C idle...
  • Page 30 Step 3b: Press “Temperature Down” button to change temperature format to °F. Changes to "°F" °F/°C Flashes °F °F/°C  idle Operational Status SELECT Step 3b Step 4: Press “SET” button to confirm ˚F or ˚C format. °F/°C will stop flashing. Setpoint display will appear in the format selected (˚F or ˚C) in 10 seconds.
  • Page 31 An automatic gas shut-off device (ECO) is incorporated in the sensor and control board which will shut off all gas supply to the burner and pilot if the water heater temperature exceeds 200°F (93°C). Should the ECO function (open), the water temperature should be reduced to approximately 120°F (49°C) and follow applicable Lighting Instructions to place the water heater in operation.
  • Page 32: Maintenance

    SECTION X: MAINTENANCE The following maintenance should be performed by a qualified service technician at the minimum periodic intervals suggested below. In some installations, the maintenance interval may be more frequent depending on the amount of use and the operating conditions of the water heater.
  • Page 33 Contact your supplier, plumbing professional or contact the company at the address given on the rating plate of the water heater for replacement parts. Provide the part name as well as the model and serial number(s) of the water heater(s) when ordering parts. READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED.
  • Page 34: Diagnostic And Troubleshooting Guide

    SECTION XI: DIAGNOSTIC AND TROUBLESHOOTING GUIDE OPERATING AND TROUBLESHOOTING GUIDE-SEQUENCE OF OPERATION (STANDING PILOT WITH MILLI-VOLT CONTROL) 1. With the pilot lit, the pilot burner assembly power pile generates milli-voltage to energize the magnet coil in the gas valve permitting gas flow through pilot and to the main gas ports of the valve. Simultaneously, milli-voltage is also directed to the ECO (energy cut off) switches located in the thermostat.
  • Page 35 ACCESSING SERVICE MODE ON THE WATER HEATER DISPLAY (FOR SERVICE PERSONNEL ONLY) The display has a “service mode” for changing the maximum setpoint and accessing information in aiding servicing of the water heater. This procedure is for service and installation personnel only. To enter the Service Mode, follow the steps illustrated below: WARNING The following procedure is for service and installation personnel only.
  • Page 36 The following is the sequence of modes available in “Service Mode” by pressing the “Select” button: Error Code Number (Display/Reset). This is only shown if there is an operating error in the “User Mode”. Error Code Shown in Water Heater Display Status Service Needed SELECT Lockout RESET...
  • Page 37 2b. Water Temperature - Upper Sensor (Displays if there is an upper sensor – some models) °F idle Operational Status Upper  Sensor SELECT 2c. Water Temperature - Lower Sensor (Displays if there are two sensors) °F idle Operational Status ...
  • Page 38 4. Setpoint (Display/Change) setpoin °F idle Operational Status  SELECT 5. ˚F/˚C (Display/Change) °F °F/C° idle Status Operational  SELECT 6. Differential (Display only – shows the differential of the thermostat) Differential °F idle Operational Status  SELECT...
  • Page 39 7. Software Version (Display only) Soft idle Operational Status  SELECT 8. Error Code History (Displays if there are present error codes or up to 10 previous error codes). Water Heater Display will show -- if there are no error codes. No current error codes idle Operational...
  • Page 40 Step 2: Press “Set” button to enter setting mode. “Max Setpoint” will flash to indicate setting mode. "Max Setpoint" Flashes °F Setpoint idle Operational Status  SELECT Step 3: Press the “UP” or “DOWN” buttons to change the maximum setpoint value. This will limit the maximum setpoint the user can select.
  • Page 41 Step 5: 30 Seconds after the last button press, the Water Heater Display will go back to “User Mode”. It will read “Max Setpoint” without showing a temperature value if the temperature setpoint is at the maximum setting. The Water Heater Display can be set back to the “User Mode”...
  • Page 42 Step 2: For water heaters using two temperature sensors, pressing the “Select” button again displays the Upper Sensor temperature reading. “Upper Sensor” will be displayed in the lower right side of the status window of the water heater display. °F idle Status Operational...
  • Page 43 To Display and Change Temperature Setpoint: Step 1: In “Service Mode” press the “Select” button until “Setpoint” is shown in the water heater display. setpoint °F idle Operational Status  SELECT Step 2: Press the “Set” button to enter the setting mode. “Setpoint” will flash in the water heater display. "Setpoint"...
  • Page 44 Step 4: To lower the temperature setpoint, press the “Temperature Down” button until the desired temperature is shown on the water heater display. "Setpoint" Flashes setpoint °F  idle Operational Status SELECT Step 5: When the desired setpoint is reached on the water heater display, press the “Set” button to confirm the new setpoint.
  • Page 45 Step 2: Press “Set” button to change temperature format. “˚F/˚C” symbol will flash in the water heater display. "°F/°C" Flashes °F °F/C° idle Status Operational  SELECT Step 3a: Press “Temperature Up” button to change temperature format to ˚C. Changes to "°C" "°F/°C"...
  • Page 46 Step 4: Press “Set” button to confirm ˚F or ˚C format. ˚F/˚C will stop flashing. "°F/°C" Symbol Stops Flashing °F °F °F/C° idle Operational Status  SELECT Step 5: Pressing “Select” button will return display to setpoint in format selected (˚F or ˚C) immediately. Setpoint shown in °F °F idle...
  • Page 47 How to reset the control from Lockout Conditions: WARNING The following procedure is for service and installation personnel only. Resetting lockout conditions without correcting the malfunction can result in a hazardous condition. If an error code is displayed (except for #4, low flame sense current), the water heater will be in a “lockout condition” with the water heater display showing the error code number and “Service Needed”...
  • Page 48 Error Codes and Error History Display: If there is an operating problem with the water heater, an error code number will appear on the water heater display with “Service Needed” to the right of the “Status” indicator. The error code label is located below the water heater display and the following section in this Installation and Operating Instruction Manual explains the error codes with corrective actions to repair the water heater.
  • Page 49 Step 2: Press the “Temperature Down” button to select the error code index, starting with the most recent error code “10”. Error Code Index  idle Status Operational SELECT Step 3: Press the “Select” button to view the error code for “code 10”. If there is a number displayed, note what the number is. The label next to the water heater display will identify the code number.
  • Page 50 Step 4: Press the “Temperature Down” button to change to the previous code index, code #9. Error Code Index  idle Status Operational SELECT Step 5: Press the “Select” button for code index #9 to view if there are any code numbers. Stored Error Code For Code Index #9 idle...
  • Page 51 Step 6: Continue pressing the “Temperature Down” button to change to the next error code index and press “Select” to view the error code number, if any, for that index number. Continue on to index #1, the oldest error code index. The water heater display will store up to 10 error codes with the oldest code starting in code index #1 with the most recent code in code index #10.
  • Page 52 Error Definition of Code Cause of Problem and Actions Taken to Correct Code Flame Sensed Out of Normal Sequence Check to make sure gas valve has closed. No voltage should be present at (Before Opening Gas the gas valve before or after ignition cycle. Make sure wire positions on the Valve or After Closing wire harness are correct.
  • Page 53 Procedure for Checking Thermostat Sensors Set the thermostat above water temperature (See temperature adjustment section) and observe system through one (1) complete cycle. Make sure system operates as desired. To check the upper sensor or lower sensor assembly, compare the resistance of the sensor terminals (blue leads for upper sensor, yellow and black lead for lower sensor) as measured by an ohmmeter to the water temperature as measured by an accurate thermometer.
  • Page 54: Parts List

    SECTION XII: PARTS LIST REPLACEMENT PARTS LISTS Contact your supplier, plumbing professional or the company listed on the rating plate of the water heater for replacement parts. Provide the part name as well as the model and serial number(s) of the water heater(s) when ordering parts. When applicable, the following information must be provided: type of gas, voltage and amperage, item number (from the following list) and description (from the following list).
  • Page 55: Installation For Potable Water And Space Heating

    SECTION XIII: INSTALLATION FOR POTABLE WATER AND 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.
  • Page 56: Notes

    SECTION XIV: NOTES...

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