Bradford-White Corp Copper Brute II Hydronic Boiler 用户手册

Page 48

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.

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

 

  

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

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.

7.2.4  Manual 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.

7.2.5  Automatic 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