Bradford White UCG100H199 Installation & Operation Manual
Gas-fired commercial water heater
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GAS-FIRED COMMERCIAL WATER HEATER
INSTALLATION/OPERATION MANUAL
SAVE THESE INSTRUCTIONS AND KEEP FOR FUTURE REFERENCE
(Ultra Low NOx)
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 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
•
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.
For customer comfort, safety, and
convenience, it is recommended this water
heater be installed and serviced by a
plumbing professional.
238-50463-00J REV 03/21
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Table of Contents
Related Manuals for Bradford White UCG100H199
Summary of Contents for Bradford White UCG100H199
- Page 1 GAS-FIRED COMMERCIAL WATER HEATER (Ultra Low NOx) INSTALLATION/OPERATION MANUAL 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 store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
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Page 2: Table Of Contents
SECTION I: IMPORTANT INFORMATION READ CAREFULLY This gas-fired water heater is design certified by CSA International under the American National Standard, Z21.10.3 (as indicated on the rating plate) and CAN/CGA 4.3-M (as indicated on the rating plate) available from CSA Standards Association, 5060 Spectrum Way, Mississauga, Ontario, CANADA L4W 5N6. - 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 with 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, burner, and flue tubes and creates a risk of asphyxiation.
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Page 5: Section Ii: Specifications
Nat. & Dia. Valve Water Water Water Dia. Dia. L.P. T&P Vent Conn. Conn. Heater Conn. UCG100H199 199,999 73 ¼ 52 ½ 55 ½ 69 ¾ 63 ¾ 1 ½ ¾ ¾ UCG100H270 270,000 73 ¼ 52 ½ 55 ½... -
Page 6: Section Iii: General Information
SECTION III: GENERAL INFORMATION This water heater contains the following features: Main Power On/Off Switch The front panel of this water heater has an ON/OFF switch, which has markings when the main power is turned on to indicate power to the water heater. Combustion System This water heater is equipped with a self-compensating negative pressure pre-mix combustion system. - Page 7 Temperature and Pressure Relief Valve 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;...
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Page 8: Section Iv: Installation Instructions
SECTION IV: INSTALLATION INSTRUCTIONS WARNING INSTALLATION OF THIS WATER HEATER SHOULD BE DONE BY A TRAINED AND QUALIFIED PROFESSIONAL. 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 9 THIS WATER HEATER MUST BE INSTALLED INDOORS OUT OF THE WIND AND WEATHER. THIS WATER HEATER MUST NOT BE INSTALLED IN ANY LOCATION WHERE GASOLINE OR FLAMMABLE VAPORS ARE LIKELY TO BE PRESENT, UNLESS THE INSTALLATION IS SUCH TO ELIMINATE THE PROBABLE IGNITION OF GASOLINE OR FLAMMABLE VAPORS. The location of this water heater is of the utmost importance.
- Page 10 Figure 2a – Minimum Clearance to Combustible Material Sides, Rear “A” Front “A” Input Less than or equal to 4 in. (10.2 cm) 0 in. (0 cm) 270,000 BTUH Figure 2b – Recommended Minimum Clearances for Service Access...
- Page 11 Remove Crate 1. Remove all banding and pry off crate sides carefully so as to not damage the water heater. Carefully roll/lift the water heater from the crate base. CAUTION DO NOT drop water heater. DO NOT bump water heater jacket against floor. DO NOT bump exhaust vent pipe against crate or other objects.
- Page 12 WARNING The draft hood relief opening of the water heater and combustion air inlet must be in the same atmospheric pressure zone. Large exhaust fans in kitchens and other locations can lower the air pressure inside an enclosure and interfere with the proper operation and venting of the water heater. In these cases, the water heater should be installed in a separate room with the combustion and ventilation air supplied directly from outdoors as previously described.
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Page 13: Section V: Venting
SECTION V: VENTING WARNING The venting system must be installed properly following 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 Installation Code (B149.1-00 latest edition) or CAN/CGA B149.2 Propane Installation Code (Latest Edition). - Page 14 Optional Intake Venting DANGER The venting instructions must be followed to avoid restricted combustion or recirculation of flue gases. Such conditions cause sooting or risks of fire and asphyxiation. NOTICE Before beginning installation of any vent pipe, read the vent pipe manufacturer’s installation instructions. DO NOT install the water heater in any location where the ambient temperature may fall below freezing.
- Page 15 Approved Intake Venting Materials For installations in the US only For installations in CANADA • PVC Sch. 40 (ASTM D-1785, ULC 1738, ULC • ULC S636 approved Sch. 40 PVC and CPVC for S636) flue gas venting rated Class II, 65°C (components •...
- Page 16 Figure 3 – Intake Vent Terminal Clearances (Referencing Other Appliance Venting Locations) Canadian Canadian Installations Installations Installations Installations 3 feet (91 cm) within a Clearance above Clearance to each side of height 15 feet (4.6 m) 12 inches 12 inches grade, veranda, porch, center line extended above above the...
- Page 17 Clearance to combustibles for all venting pipes and terminals For installations in the CANADA Refer to vent pipe and terminal manufacturer’s For installations in the US 0” minimum installation instructions for clearances to combustibles DO NOT place insulation or other materials in the required clearance spaces between the venting to combustible material unless otherwise specified.
- Page 18 Vertical Installation Vertical venting system must be supported every 5 ft (1.5 m) of vertical run and every 3 ft (.92 m) of horizontal run of vent pipe length. CAUTION Failure to properly support the vent piping with hangers and clamps may result in damage to the water heater or venting system.
- Page 19 4. Total vent length cannot exceed “Max Vent Length” on the venting table shown above. Example of Total Vent Length for UCG100H199 Installation A 3 in (7.6 cm) venting system has a total of three 90° elbows and a total straight pipe length of 30 ft (9.2 m).
- Page 20 Vent Pipe Preparation WARNING DO NOT attempt to start this water heater until vent pipe solvent fumes completely clear from the room and inside the vent piping. 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.
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Page 21: Section Vi: Water Connections
SECTION VI: WATER CONNECTIONS NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE. CAUTION If sweat fittings are to be used, DO NOT apply heat to the nipples on the side of the water heater. Sweat the tubing to the adapter before fitting the adapter to the water heater connections. - Page 22 Alternate Space Heating Water Connections DANGER Toxic chemicals, such as those used for boiler treatment, must NOT be introduced into potable water used for space heating. This water heater must NOT be connected to an existing heating system or component(s) previously used with a non-potable water heating appliance.
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Page 23: Section Vii: Gas Connections
Figure 14 – Typical Plumbing Schematic for Zoned Heating 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 B 149.2 Propane Installation Code (Latest Edition). - Page 24 3. While checking for leaks care must be taken to prevent solution from contacting the electrical connections at the control. If electrical connections at the control become wet, they must be thoroughly dried before attempting to operate the water heater. Gas Meter Size –...
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Page 25: Section Viii: Electrical Connections
SECTION VIII: ELECTRICAL CONNECTIONS WARNING Turn OFF or disconnect the electrical power supply to the water heater before servicing. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. All electrical wiring must be installed and grounded in accordance with local codes, or in the absence of local codes, the National Electrical Code, ANSI/NFPA 70 and/or CSA C22.2 Electrical Code. - Page 26 Building Management System (BMS) The water heater can be equipped with a gateway kit that will facilitate a Building Management System (BMS) connection to Modbus or Bacnet ® . This kit is sold separately and is not factory installed. A full installation, operation, and troubleshooting manual is provided with the gateway kit.
- Page 27 BMS Wiring Diagram NOTICE The Building Management System (BMS) is only compatible with units that have SOLA controllers. Part Bradford White Part Number BMS Gateway Installation Kit 415-53943-00...
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Page 28: Section Ix: Operating Instructions
SECTION IX: OPERATING INSTRUCTIONS WARNING Water heaters are heat-producing appliances. To avoid damage or injury there must be no materials stored against the water heater or vent system, and proper care must be taken to avoid unnecessary contact (especially by children) with the water heater and 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 29 Lighting and Shutdown Instructions Figure 16 – Lighting Instruction Label...
- Page 30 Combustion Air/Gas Ratio Efficiency This water heater is factory equipped with a gas valve/air mixing venturi system designed and set to maintain appropriate combustion excess air level (air/gas ratio) under normal operating conditions. The water heater excess air level is field adjustable in order to optimize water heater efficiency. When the excess air level is adjusted, an accurate and recently calibrated combustion gas analyzer, which correctly measures carbon monoxide (CO) and carbon dioxide (CO2) levels in the exhaust gas, as well as an accurate gas pressure manometer, are mandatory.
- Page 31 The water heater temperature setting is adjusted by using the control display mounted to the front of the water heater. The water heater thermostat is set at the lowest setpoint of 70F (22 C) when shipped from the factory. The control display shows the temperature setpoint in degrees Fahrenheit (F) or degrees Celsius (C), and the status of the water heater (“Idle”...
- Page 32 Display Control Water Heater Display and Control Buttons To Increase Temperature Setpoint Step 1. Press and hold “Temperature Up” button until desired setpoint temperature appears on the display. Step 2. Press “DONE” button for new setting to take effect immediately. If the “DONE” button is not pressed, the new temperature setting will take effect in approximately 10 seconds.
- Page 33 To Decrease Temperature Setpoint Step 1. Press and hold “Temperature Down” button until desired setpoint temperature appears on the display. Step 2. Press “DONE” button for new setting to take effect immediately. If the “DONE” button is not pressed, the new temperature setting will take effect in approximately 10 seconds. To View Combustion Rate Step 1.
- Page 34 To Change Temperature Format in Display from F to C or ˚C to ˚F Step 1. Enter “Set-Up Mode” by pressing both UP/DOWN buttons together for 3 seconds. Step 2. Use the arrows to select between °F and °C Step 3. Press done to return to main screen or timeout/change will occur in one minute. Energy Cut Out (ECO) An automatic gas shut-off device (ECO) is incorporated in the sensor and control board which will shut off gas supply to the burner if the water heater temperature exceeds 207°F (97.2°C).
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Page 35: Section X: Maintenance
SECTION X: MAINTENANCE DANGER DO NOT attempt to repair gas valve. DO NOT attempt to repair ignition module. DO NOT attempt to repair venturi. DO NOT attempt to repair thermostat board. DO NOT attempt to repair transformer. DO NOT attempt to repair flow switch. WARNING 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... - Page 36 Maintenance Schedule Following are the instructions for performing some of the recommended maintenance. Unit inspection and adjustment should only be performed by a qualified technician. Table 7 – Suggested Maintenance Schedule Service Interval Component Operation Action Tank Sediment removal Drain off several gallons of water. 1 Month: Condensate Line Inspect &...
- Page 37 Sediment and Lime Scale Removal Waterborne impurities consist of the particles of soil and sand, which settle out and form a layer of sediment on the bottom of the tank. The amount of calcium carbonate (lime) released from water is in direct proportion to water temperature and usage.
- Page 38 Temperature and Pressure Relief Valve At least twice a year, the temperature and pressure relief valve should be checked to ensure that it is in operating condition. To check the relief valve, lift the lever at the end of the valve several times. The valve should seat properly and operate freely.
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Page 39: Section Xi: Service And Troubleshooting Guide
SECTION XI: SERVICE AND TROUBLESHOOTING GUIDE Sequence of Operations 1. Thermostat calls for heat. 2. Combustion blower starts at a “soft” start light off. 3. Blower pre-purge period of approximately 15 seconds. 4. Ignition control board runs an internal verification safety check for approximately 15 seconds. 5. - Page 40 Additional Display Features Accessing Diagnostic Mode on the Water Heater Display (FOR SERVICE PERSONNEL ONLY) The display has a Diagnostic Mode to access information in aiding servicing of the water heater. This procedure is for service and installation personnel only. To enter the Diagnostic Mode, follow the steps illustrated below: WARNING The following procedure is for service and installation personnel ONLY.
- Page 41 Step 4. Press lower right “Next” button. The display will flash and show the number of any Lockout codes. If there are no lockouts, the display will show 00. If there are multiple lockout codes “Next” will scroll through them. Step 5.
- Page 42 Step 7. Press “Done” to exit Diagnostic Mode and return to the DHW setpoint in User Mode. NOTICE The ICON control system can produce soft and hard lockouts. Soft lockouts are displayed if active and are not stored in Diagnostic Mode history. The control will periodically attempt to resume normal operation when in soft lockout conditions.
- Page 43 Definition Error Code Cause of Problem and Actions Taken to Correct LOG? of Code • Check the wiring from the sensor to the control module. • Measure the resistance of each outside wire to the center wire. High Limit • If either outside wire has a much different resistance reading, replace the sensor. (Overheat •...
- Page 44 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 assembly, compare the resistance of the sensor terminals (yellow and black lead for upper sensor) as measured by an ohmmeter to the water temperature as measured by an accurate thermometer.
- Page 45 Contact your local plumbing supplier or plumbing professional for replacement parts or contact the company at the address displayed on the rating plater of the water heater. For faster and better service, please provide the part name, model, and serial number(s) of the water heater(s) when ordering parts.
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Page 46: Notes
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