Lighting Instructions; Service Hint; To Turn Off Gas To Appliance - Bosch WR400 K T2 Series Installation Operation & Maintenance

OPERATING INSTRUCTIONS
WARNING!
If the water heater has been damaged or exposed to fire or
sooting, or if any part has been underwater, do not use.
Immediately call a qualified service technician to inspect
the appliance and to replace any part of the control system
and any gas control which has been underwater and to clean
the heat exchanger assembly and water valve.
FILLING
Before proceeding with operation of the water heater make
sure that the system is filled with water:
•
Make sure drain is closed. See figure 8, below.
•
Open a nearby hot water faucet to permit the water to
fill the heater and piping.
•
Close the hot water faucet after the water flows freely
and all air has escaped from the system.
The water heater is now ready to be lit.
Figure 8

SERVICE HINT

The strainer (screen) in the water valve, located in the inlet
of the water valve, may require occasional cleaning due to
foreign material in the water supply. This will restrict the
flow of water and may effect heater operation and prolong
filling time. To inspect the strainer, close the cold water supply
valve ahead of the heater, disconnect the S- bend from the
inlet of the water valve and remove strainer from inlet. Clean
if required, replace strainer in inlet to the water valve,
reconnect S- bend and turn on water supply.
Light the water heater in accordance with the instructions
on the Lighting and Operating Plate on the water heater.
For your convenience, the instructions are repeated below:

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information, first section of the
Lighting Instruction Plate on the cover.
2. The main manual gas valve must be closed (turn valve
handle clockwise
depressed . See figure 9.
3. Wait five (5) minutes to clear out any gas. If you then
smell gas, STOP! Follow "B" in the safety information
given above on this plate. If you don't smell gas, go to
next step.
4. The pilot burner is located behind the peephole located
in the front center of the jacket directlybelow this
instrution plate.
5. Open main manual gas valve by turning valve handle
counterclockwise
6. Depress PILOT button
PILOT IGNITER button
repeated.
7. Observe pilot flame though peephole. The PILOT button
- should be held down at least 10 seconds with
pilot burning. When the PILOT button is released the
pilot should continue to burn.
- If the PILOT button does not pop up when released
stop and immediately call your service technician or
gas supplier.
- If the pilot will not stay repeat lighting procedure steps
1 through 8.
- If the pilot will not stay lit after several tries, depress the
OFF button , turn the manual gas valve handle
clockwise to OFF position and call your service
technician or gas supplier.
8. Depress the ON button
when water is drawn at arate greater than the threshold
flow rate (see manual)*.
Note: If main burner should fail to ignite make sure pilot is
burning. If not repeat lighting procedure steps 1 through 8.

TO TURN OFF GAS TO APPLIANCE

1. Depress OFF buton
by turning handle clockwise to OFF position. See figure
9.
*see TEMPERATURE REGULATION section.
) and the gas valve OFF button
.
and light pilot by pushing
. This may have to be
. The heater will now fire
and close the main gas valve
7