Start-Up Instructions; Shut-Down Instructions - L.B. White GUARDIAN AB250 Owner's Manual And Instructions

Follow steps 1 - 8 on initial start-up after heater installation
by a qualified gas heater service person. For normal start-
up, simply turn thermostat above room temperature. The
heater will start.
1. Open all manual fuel supply valves and check for gas
leaks using approved certified leak detectors.
2. The gas control valve incorporates a manual gas shut
off feature. Position the indicator on the shut off knob
to pilot.
3. Fully depress the red pilot button located on the
control valve while applying flame to the pilot light.
4. Keep the button depressed for about 30 seconds to
allow the thermocouple to warm up so the pilot stays
lit after you release the pilot button.
installations it may take about a minute for the gas to
purge out any air in the pilot line before the pilot lights.
5. Position the knob to on.
If the heater is to be shut down for cleaning, maintenance or
repair, follow steps 1 - 5. Otherwise, simply turn thermostat
to off or no heat for standard shut down.
1. Close all manual fuel supply valves.
2. With the heater lit, allow heater to burn off excess fuel
in gas supply hose.
FIG. 6
PILOT BUTTON
6. Connect the heater's electrical cord to an approved
On new
electrical outlet.
7. Set thermostat to a point above room temperature.
the heater will light. Reset thermostat to desired room
temperature.
8. Do not exceed input rating stamped on nameplate of
appliance, or manufacturer's recommended burner
orifice pressure for size orifice(s) used.

Shut-Down Instructions

3. Turn the knob (if applicable) on the gas control to off.
4. Turn thermostat to off or no heat position.
5. Disconnect the heater from the electrical supply.

Start-Up Instructions

GAS SHUT OFF KNOB
ON
OFF
PILOT
11