Bradford-White Corp BMT2V Manual De Usuario

Page 34

wires, remove the mounting screws and remove the 

transformer. Replace transformer in the reverse order.

The Brute Deluxe uses a paddle-type flow switch 

to ensure that the unit has water flow before ignition is 

allowed. To replace the flow switch, turn off the 120-

volt power to the appliance. Isolate the boiler or water 

heater from the system by closing the isolation valves.

Water may be hot enough to scald. Allow water to 

cool before proceeding.

L’eau peut être chaude au point de vous brûler. 

Laissez refroidir l’eau avant d’intervenir.

Release pressure in the system by actuating 

the pressure relief valves or field supplied boiler 

drain valve. Remove cover from the flow switch 

and disconnect the wires. Unthread the flow switch 

from piping. Ensure the new flow switch paddles are 

trimmed to the same size as the original paddles, and 

reinstall in the reverse order. For boiler and other static 

pressure systems, restore the system pressure to the 

original setting, (or 10 psi minimum).

Black carbon soot buildup on a dirty heat exchanger 

can be ignited by a random spark or flame thereby 

creating a risk of fire or explosion. To prevent this 

from happening, dampen the soot deposits with a 

wet brush or fine water spray before servicing the 

heat exchanger.

L’accumulation de suie sur un échangeur thermique 

sale peut s’enflammer au contact d’une étincelle ou 

d’une flamme et présenter un risque d’incendie ou 

d’explosion. Afin d’empêcher que cela se produise, 

humidifier les dépôts de suie à l’aide d’une brosse 

mouillée ou par une pulvérisation fine d’eau avant 

d’effectuer l’entretien de l’échangeur thermique.

The Brute Deluxe has a premixed burner system. 

These systems provide the burners with sufficient air 

for complete combustion, and black carbon sooting is 

seldom experienced. If sooting is suspected, view ports 

for inspection of the heat exchanger are provided on 

the side of the boiler. In the unlikely event that there is 

a buildup of black carbon soot or other debris on the 

heat exchanger, clean per the following:

1.  Disconnect the electrical supply to the unit.

2.  Turn off the gas supply by closing the manual gas 

valve on the heater.

3.  Disconnect and remove the wires, conduit and 

sensors from all components that are attached to 

the inlet/outlet header.

4.  Isolate the heat exchanger from the water supply.

5.  Disconnect the header flanges from the inlet and 

outlet.

6.  Allow the heat exchanger to drain. Remove the 

venting and remove the top, by removing the 

screws that attach the top to the side panels. 

Remove the side panels. 

7.  Remove the heat exchanger from the unit. 

NOTE: Heat exchangers are heavy and may 

require two people to remove to avoid personal 

injury.

8.  Clean the heat exchanger: A light accumulation 

of soot or corrosion on the outside of the heat 

exchanger can be easily removed. Use a wire 

brush to remove loose soot and scale from the 

heat exchanger. 

9.  NOTE: While the heat exchanger is out of the 

unit, inspect the firewall refractory insulation. 

Replace if necessary.

10.  Inspect the inside of the copper tubes for scale 

buildup. Scale can build up on the inner surface 

of the heat exchanger tubes, which can restrict 

water flow. If the tubes show signs of scaling, 

clean the internal surface. 

11.  Reassemble in the reverse order, and check 

appliance operation after start-up.