Page 46 | BRADFORD WHITE CORP. |
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SECTION 11.
Maintenance
WARNING
Disconnect all power to the appliance before attempting any service to the appliance. Contact with electricity can result in severe injury or death.
11.1 System Maintenance
(yearly, unless otherwise noted)
1.Lubricate the system
2.If a strainer is employed in a pressure reducing valve or the piping, clean it every six moBNTHs.
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.
6.Low water cutoffs, if installed, should be checked every year. Float type low water cutoffs should be flushed periodically.
7.Inspect and clean the condensate collection, float switch and disposal system yearly.
8.When a means is provided to neutralize condensate, ensure that the condensate is being neutralized properly.
9.Inspect flue passages, and clean with brushes/ vacuums, if necessary. Sooting in flue passages indicates improper combustion. Determine the cause and correct.
10.Inspect the vent system and air intake system, and 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 reassemble.
11.2Appliance Maintenance and Component Description
Use only genuine Bradford White replacement
parts.
Caution
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and danger- ous operation. Verify proper operation after servicing.
Brute Elite gas and electric controls are engineered for long life and dependable operation, but the safety of equipment depends on their proper functioning. Only a
qualified service technician should inspect the basic
items listed below every year: |
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a. Appliance control | f. Flow switch |
b. Automatic gas valve | g. Low water cutoff |
c. Pressure switches | h. Burner |
d. Blower | i. Heat exchanger |
e. Pump |
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11.2.1 Burner
Check the burner for debris. Remove the blower arm assembly to access the burner. Remove the 4 bolts connecting the blower to the arm (see Figure 34).
Remove the 5 bolts, which hold the burner arm in place. Pull burner up and out. Clean burner, if necessary, by blowing compressed air from the outside of the burner into the center of the burner, and wipe the inside of the burner clean with glass cleaner. A dirty burner may be an indication of improper combustion or dirty combustion air. Determine the cause, and correct. If damaged, replace the burner gasket when replacing the burner.
NOTE: When installing the burner, make sure the flange is aligned with the mating surface, as each is keyed to control fit.
11.2.2 Modulating Gas Valve / Venturi
The modulating gas valve consists of a valve body that incorporates the ON/OFF gas flow control and a negative pressure regulator. It provides the air/gas ratio control in combination with the venturi to the unit. It is designed to operate with gas supply pressure between 4 and 13 inches w.c.. To remove the gas valve and or venturi, shut off the 120 Volt power supply to the boiler. Turn off all manual gas valves connecting the boiler to the main gas supply line. Remove the front door of the boiler to gain access to the gas valve and venturi. Disconnect the four (4) flange bolts connecting the gas manifold pipe to the gas valve. Remove the electrical connections to the gas valve. Remove the bolts connecting the venturi flange to the blower. This allows the entire gas valve/venturi assembly to be removed as an assembly to facilitate inspection and cleaning.
After the valve has been removed, reassemble in reverse order making sure to include all gaskets and O- rings. Turn on the manual gas valves and check for gas leaks. Turn on the 120 Volt power. Place the unit in operation following the instructions in Section10. Once the boiler is operating check for leaks again and confirm all fasteners are tight.
Check appliance setup according to Section 10.
11.2.3 Appliance Control
Brute Elite has an integrated control that incorporates manual reset high limit control, operating temperature control, modulating control, ignition control, outdoor reset control, pump control and many other features. If any of these features are thought to be defective, please consult the factory for proper trouble shooting practices prior to replacing the control. If control replacement is required, turn off all power to the
