Bradford-White Corp BWCV System Maintenance, Appliance Maintenance Component Description

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BRADFORD WHITE CORP.

 

 

 

 

SECTION 7.

Maintenance

7.1 System Maintenance

1.Lubricate the system water-circulating pump, if required, per the instructions on the pump.

2.If a strainer is employed in a pressure reducing valve or the piping, clean it every six months.

3.Inspect the venting system for obstruction or leakage at least once a year. Periodically clean the screens in the vent terminal and combustion air terminal (when used).

4.Keep the appliance area clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

5.If the appliance is not going to be used for extended periods in locations where freezing normally occurs, it should be isolated from the system and completely drained of all water. All systems connected to it should also be drained or protected from freezing.

6.Low water cutoffs, if installed, should be checked every 6 months. Float type low water cutoff should be flushed periodically.

7.Inspect flue passages, and clean with brushes/ vacuums, if necessary. Sooting in flue passages indicates improper combustion. Determine the cause and correct.

8.Inspect the vent system and air intake system, and if the vent system is Category III, ensure that all joints are sealed properly. If joints need to be resealed, completely remove existing sealing material, and clean with alcohol. Apply new sealing material, and re-assemble.

7.2 Appliance Maintenance and

Component Description

Only genuine Bradford White replacement parts should be used.

Caution

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing.

See Figures 31 and 32 for location of gas train

and control components.

The gas and electric controls on the appliance

are engineered for long life and dependable operation, but the safety of the equipment depends on their proper functioning. It is strongly recommended that a qualified service technician inspect the basic items

listed below every year:

 

a. Ignition controls

d. Automatic gas valve

b. Ignitors

e. Pressure switches

c. Water temperature

f. Blowers

control

 

7.2.1 Burners

Close main manual gas valve before proceeding. Checking the burners for debris - Remove the ignitor inspection panels(s) and ignitor(s) and inspect the burners through the ignitor hole(s) using a flashlight to illuminate. If there is any indication of debris on the burners that are visible, all the burners will need to be inspected more thoroughly. Remove the screws from around the front of the air box (large panel from which the ignitor inspection panel(s) were removed), and remove the large panel. Remove the gas manifold assemblies and the burner panels. Inspect the burners. Clean burners, if necessary, by blowing compressed air from the outside of the burners into the center

of the burner. A dirty burner may be an indication of improper combustion or dirty combustion air. Determine the cause, and correct. Replace the burners in the reverse order

7.2.2 Filter

The filter used in the Copper Brute II is washable with an 83% arrestance. Since the filter is washable, it will only need replacement when unwashable, deteriorated or damaged. If filter replacement is needed, it should only be replaced with a factory part. Inspect the air filter. If there is debris on the air filter, remove it from the filter box, and wash it with mild soap and water. Ensure that the filter is completely dry before re-installing, in reverse order.

7.2.3 Gas Valves

The gas valves are designed to operate with supply pressures of 4-13 inches w.c. (1.0 to 3.2 kPa). To remove a valve, shut off 120-volt power

and the manual gas shutoff valve. Remove the top front panel from the unit. Disconnect the wires to the valve. Disengage the flanged fitting before and after the valve, and remove the valve. Re-install in reverse order. Ensure o-rings are properly installed for both inlet and outlet. Turn on manual gas shutoff valve and 120 volt power and check appliance operation and tightness of gas valve connections.

7.2.4Manual Reset High Limit Control

The high limit switch is manual reset switch with

an adjustable set point, up to 240°F (116°C) on boiler models and 200°F (93°C) on water heater models and boilers ordered with low temperature controls. To replace the switch, shut off the 120-volt power to the appliance. Remove the cover from the switch to access the mounting screws. Remove the screws, and pull the switch off the control panel. Remove the capilliary and bulb from the thermal well located in the header. Replace in reverse order.

7.2.5Automatic Reset High Limit Control

An automatic reset high limit is used in addition

to the manual reset high limit. The high limit switch has an adjustable set point, up to 240°F (116°C) on boiler models and 200°F (93°C) water heater models

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Contents Copper Brute Table of Contents Maintenance Trouble ShootingReplacement Parts Operating InstructionsGeneral Information IntroductionModel Identification Warranty DimensionsLocating the Appliance Dimensional Data Inches 91cm horizontally Venting and Combustion Air Combustion AirCombustion Air From Room Intake Combustion AirVenting Vent CategoriesCategory I Vent Common Venting SystemsCombustion Air and Vent Through Side Wall Locating Vent & Combustion Air Terminals Category III VentSide Wall Vent Terminal Side Wall Combustion Air TerminalCommon Vent Test Boilers Vent Terminals for Outdoor UnitsVertical Vent Terminal Vertical Combustion Air TerminalGas Supply and Piping 61-91mWater Connections Copper Brute II Boiler 4A.1 Heating System Piping Hot Supply Connections Boiler4A.2 Cold Water Make-Up Boiler 4A.3 Water Flow Requirements BoilerHydronic Piping Multiple Boilers, Primary Secondary System Hydronic Piping Multiple Boilers, Low Temperature System Hydronic Piping One Boiler, Multi-Temperature System Hydronic Piping Primary-Secondary, Reverse-Return Boiler CIRC. Pump Sized for Flow Through Boiler Water Connections Copper Brute II Water Heater 4B.1 Water System Piping Water Heater4B.2 Hot Water Supply Piping Water Heater 4B.3 Water Flow Requirements Water Heater4B.5 Freeze Protection Water Heater SupplyWater Heater Piping Multiple Heaters, One Tank Water Heater Piping Multiple Heaters, Multiple Tanks Main Power Temperature ControlElectrical Connections Field Wiring Panel External Staging Control Wiring AvertissementCopper Brute II 500 750 Ladder Diagram Copper Brute II 1000 Ladder Diagram Copper Brute II 1250 2000 Ladder Diagram Copper Brute II 500 1000 Wiring Schematic Copper Brute II 1250 1500 Wiring Schematic Copper Brute II 1750 2000 Wiring Schematic Terminal designations are as indicated Field Wiring for Modes 1 Avertissement Operating Instructions Sequence of OperationFilling the Boiler System Programming the Temperature Control Choosing the ModeSystem Piping Primary Secondary Piping Parallel PipingFor ALL Other Modes Hydronic Primary/Secondary Mode Choosing the Mode for your Application Mechanical aquastat in a domestic hot water storage tankMode 5 Primary secondary piping with outdoor reset Staging Mode Advanced TopicsDifferential Boiler Target Temperature Boiler Minimum Boil MINBoiler Maximum Boil MAX Pump OperationOutdoor Reset Operation Setpoint OperationDedicated Domestic Hot Water Typical Gas Train Configuration Operating the Burner and Set Up Advanced Programming ModeSet Up for 0 to 2500 Feet Altitude External Boiler OperationHigh Altitude Adjustment and Set Up Shutting Down the Copper BruteTo Restart the Copper Brute Maintenance System MaintenanceAppliance Maintenance Component Description Temperature Control Flow SwitchIgnition Controls IgnitorsBradford White Corp Trouble Shooting Troubleshooting the Temperature Control Troubleshooting Copper Brute ControlsCopper Brute II 500 Troubleshooting Error Codes Replacement Parts Parts ListSee Figures 35 Heat Exchanger Components Electrical Components Gas Train Components Burner Manifold Assy, 4 Burners, Left, LP For reference Internal Components Copper Brute II Hydronic Electrical Components H2214401F
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