Installation / Operation Instruction Manual

Page 34
Bradford White Corp
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 qualied service technician inspect the basic items
listed below every year.
a. Ignition control
b. Ignitor
c. Water temperature control
d. Automatic gas valve
e. Pressure switches and tubing
f. Blower
g. High limit
h. Pump (if required)
i. Relays
j. Flow switch
k. Gas train
l. Control components
7.B.1 Burners
Close main manual gas valve before proceeding.
Checking the burners for debris - Remove the ignitor/
burner access panel and ignitor, and inspect the
burners through the ignitor hole using a ashlight to
illuminate. If there is any indication of debris on the
burners that is visible, all the burners will need to be
inspected more thoroughly. Remove the gas manifold
assemblies and the burner assemblies. 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.B.2 Filter
The lter used in the Brute Deluxe is washable
and has an 80% arrestance rating. Since the lter is
washable, it will only need replacement occasionally.
If lter replacement is needed, it should only be
replaced with a factory part. Inspect the air lter
monthly, or more often in dirty environments. If there
is debris on the air lter, remove it from the lter
frame, and wash it with mild soap and water. Ensure
that the lter is completely dry before reinstalling.
7.B.3 Gas Valves
The gas valves are designed to operate with
supply pressures of 4-13 in. w.c. (1.0 to 3.2 kPa).
To remove a valve, shut o 120-volt power
and the manual gas shuto valve. Remove the front
panels from the unit. Disconnect the wires to the valve.
Disengage the union and remove the valve. Pull the
pipe nipples from the inlet and outlet of the valve, and
clean the threads on the pipe nipples for reuse. Apply
new tape or pipe dope to the pipe nipples (threaded
joints should be coated with piping compound resistant
to action of liqueed petroleum gas), and reinstall in
reverse order. Turn on manual gas shuto valve and
120 volt power and check appliance operation and
tightness of gas valve connections.
7.B.4 Manual Reset High Limit Control
The high limit switch is a manual reset, non-
adjustable switch with a remote bulb-type sensor.
Switches for water heaters and low temperature boiler
models are set at 200°F. Switches for standard boilers
are set at 240°F.
The control is located behind the front door, on a
panel in front of the blower. The probe is in the outlet
side of the header.
To reset the switch, unscrew the black cover that
is over the reset button, and push the button. Replace
the cover after the switch is reset.
To replace, shut o power to the appliance.
Remove the cover that is over the button, and remove
the nut that is around the button. Pull the control
through the panel, and remove the spade terminals.
Replace in reverse order.
7.B.5 Ignition Control
The ignition control controls the hot surface
ignitor and proves that the ame signal is appropriate
for powering the gas valves. It also controls the
blower’s pre-purge and post-purge.
To replace a control, shut o the 120-volt power
to the appliance. Remove the cover from the control
panel. Remove the electrical connectors from the
ignition control. Take out the controller’s mounting
screws, and pull the controller out. Replace in reverse
order.
7.B.6 Ignitor
The ignitor used is a 120v “Hot Surface” type.
It is energized whenever there is a call for heat and
switched o when ignition is established and the ame
has been sensed. To replace the ignitor, shut o the
120-volt power to the appliance, remove the ignitor/
burner access panel, disconnect the Molex connector,
remove the two mounting screws on the ignitor ange,
and pull the ignitor out. Install in reverse order, always
using a new ignitor gasket with the replacement
ignitor.
Caution
Ignitor gets hot. To avoid injury, handle the ignitor
with caution.
Attention
Le dispositif d’allumage devient très chaud.
Manipulez le dispositif d’allumage avec
précaution.