Owner`s manual

24
Fig. 24-2
Fig. 24-1
Compressed
air duster
CLEANING AND MAINTENANCE (Cont.)
Main burner
port
ODS pilot
assembly
ODS pilot
gas line
Thermopile
Air intake
openings
Ignitor electrode
ODS pilot
thermocouple
Carry over
tube
ODS pilot opening
ODS pilot assembly close up (natural
gas confi guration for 12 series valve
shown)
Fig. 24-1
CLEANING THE ODS PILOT
Periodic cleaning and maintenance of the vent-free gas log set is recommended to ensure that the log set
operates properly. Cleaning of the ODS pilot system is an important part of the maintenance program. This
ODS pilot cleaning procedure must be performed by a qualifi ed professional service technician familiar with the
specifi c characteristics of the log set.
1. Turn the vent-free gas log set to the OFF position and allow it to cool. Inspect the ODS pilot area (see Fig.
24-1) for any visual contamination or debris (usually lint, hair, spider webs, or small insects). Lightly brush
off all external surfaces while vacuuming loosened debris from the ODS pilot opening. Be careful not to
brush any foreign material into the ODS pilot opening.
2. Clean out both ODS pilot air intake openings (see Fig. 24-2) by lightly brushing around the openings while
vacuuming.
Note: It is very important that the air intake openings be kept clear of debris. Should the openings become
blocked, the ODS pilot system will not operate properly.
3. Light the ODS pilot according to the relevant LIGHTING INSTRUCTIONS page. Periodically verify the ODS pilot
fl ame appears as shown in the lighting instruction diagram.
4. If the ODS pilot fl ame does not burn as indicated in the instructions, extinguish the ODS pilot by turning the
valve to the full OFF position. Using a compressed air duster (commonly available at computer, electronic,
or offi ce supply stores), insert the fl exible nozzle through either air intake opening, ensuring that the nozzle
is pointed toward the ODS pilot opening (see Fig. 24-2). Blow air through both air intake openings to clear
out any debris that may be in the system.
5. Relight the ODS pilot and inspect it to be sure it is burning as shown in the instructions. If not, extinguish the
ODS pilot and turn off the gas supply to the gas log set. Using an adjustable or a
1
/
4
" wrench, disconnect
the ODS pilot gas line from the valve (see Fig. 24-1).
6. Insert the fl exible nozzle of the compressed air duster and blow air into the input end of the ODS pilot gas
line to remove any blockages (see Fig. 24-2). Do not blow air directly into the ODS pilot opening.
Blow air in the direction of the gas fl ow.
7. Reinstall the ODS pilot gas line and check for leaks.
8. Light the ODS pilot to make sure it is operating properly (see OPERATING THE GAS LOG SET - LIGHTING
& EXTINGUISHING).
9. If the ODS pilot still does not operate properly, the ODS pilot may need to be replaced with the same
model as the one on the unvented burner.