Vanguard Vi33NRB Owner's Operation And Installation Manual - Inspecting Burners
www.desatech.com
113195-01J
23
BURNER FLAME PATTERN
Figure 38 shows a correct burner flame pat-
tern. Figure 39 shows an incorrect burner
flame pattern. If burner flame pattern is
incorrect,
• turn heater off (see To Turn Off Gas to Ap-
pliance, page 20)
• see Troubleshooting, page 25
BURNER PRIMARY AIR HOLES
Air is drawn into the burner through holes in
fitting at burner entrance. These holes may
become blocked with dust or lint. Periodically
inspect these holes for any blockage and
clean if needed. Blocked air holes will cre-
ate soot.
MAIN BURNER
Periodically inspect all burner flame holes
with heater running. All slotted burner flame
holes should be open with yellow flame pres-
ent. All round burner flame holes should be
open with a small blue flame present. Some
burner flame holes may become blocked by
debris or rust, with no flame present. If so,
turn off heater and let cool. Remove blockage,
blocked burner flame holes will create soot.
Figure 38 - Correct Flame Pattern with
Control Knob Set to High Flame.
Figure 39 - Incorrect Flame Pattern with
Control Knob Set to High Flame
iNSpEcTiNG BURNERS
Continued
clEANiNG AND MAiNTENANcE
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep
control areas, burner and circu-
lating air passageways of heater
clean. Inspect these areas of
heater before each use. Have
heater inspected yearly by a
qualified service person. Heater
may need more frequent clean-
ing due to excessive lint from
carpeting, pet hair, bedding
material, etc.
WARNING: Failure to keep
the primary air opening(s) of
the burner(s) clean may result in
sooting and property damage.
BURNER INjECTOR HOLDER AND
PILOT AIR INLET HOLE
The primary air inlet holes allow the proper
amount of air to mix with the gas. This pro-
vides a clean burning flame. Keep these
holes clear of dust, dirt, lint and pet hair.
Clean these air inlet holes prior to each
heating season. Blocked air holes will create
soot. We recommend that you clean the unit
every three months during operation and
have heater inspected yearly by a qualified
service person.
We also recommend that you keep the burner
tube and pilot assembly clean and free of dust
and dirt. To clean these parts we recommend
using compressed air no greater than 30 PSI.
Your local computer store, hardware store or
home center may carry compressed air in a
can. If using compressed air in a can, please
follow directions on can. If you don’t follow
directions on can, you could damage pilot
assembly.