Shutting Down The Brute Unit; Restarting The Brute Unit - Bradford White Brute BNTH Installation And Operation Instructions Manual

Brute
BOILERS AND VOLUME WATER HEATERS
instructions and all local codes.
2. Determine that the appliance and system are filled
with water and all air has been bled from both.
Open all valves.
3. Observe all warnings on the Operating
Instructions label and turn on the gas and
electrical power to the appliance.
4. The Brute unit will begin the start sequence. The
blower and pump will energize for the pre-purge
period, then the ignition sequence will start. After
all safety devices have been verified, the gas
valve will open. If ignition doesn't occur, turn off
the Brute, and check that there is proper gas
supply. Wait 5 minutes before restarting.
5. Turn the Brute on.
6. After placing the appliance in operation, the
Burner Safety Shutoff Device must be tested:
• Close the gas shutoff valve with the burner
operating.
• The flame will go out and the blower will
continue to run for the post purge cycle.
One or three additional attempts to light will
follow. Each cycle will include pre-purge,
ignitor on, valve/flame on, and post purge.
Ignition will not occur because the gas is off.
The ignition control will lockout.
• Open the gas shutoff valve. Reset the boiler
control by pressing the Reset button on
the control or on the display. Restart the
appliance. The ignition sequence will start
again and the burner will start. The appliance
will return to its previous mode of operation.
If you detect any odor of gas, or if the gas burner
does not appear to be functioning in a normal
manner, CLOSE THE MAIN SHUTOFF VALVE.
Do not shut off the switch. Contact your heating
contractor, gas company, or factory representative.
DANGER
9.3 Shutting Down the Brute Unit
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. If you think the Brute unit might freeze, drain it. All
water must be removed from the heat exchanger, or
damage from freezing may occur. Also be sure to
protect the piping in the building from freezing.
This step must be performed by a qualified service
person.
9.4 Restarting the Brute Unit
If the unit has been drained, see Section 9.1 in this
manual for instructions on filling and purging the unit
properly.
1. Turn off the main electrical disconnect switch.
2. Close all manual gas valves.
3. WAIT FIVE (5) MINUTES.
4. Set the aquastat or thermostat to its lowest setting.
5. Open all manual gas valves.
6. Reset all safety switches (pressure switch, manual
reset high limit, etc.).
7. Set the temperature controller to the desired
temperature setting, and switch on electrical power.
8. The burner will go through a prepurge period and
ignitor warm-up period, followed by ignition.
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Caution