Desa VF-24N-MHD - Manual (Page 19)

www.desatech.com 116986-01B 19
BURNER FLAME PATTERN
Figure 22 shows correct burner flame pattern.
NOTICE: Do not mistake orange
flames with yellow tipping. Dirt
or other fine particles are burned
by heater, causing brief patches
of orange flame.
If burner flame pattern is incorrect, as shown in
Figure 23
• turn appliance off (see To Turn Off Gas to Ap-
pliance on page 18
• see Troubleshooting, page 21
Figure 22 - Correct Burner Flame Pattern
Figure 23 - Incorrect Burner Flame
Pattern
Blue & Bright
Yellow Flames
Orange
Flames
INsPeCTING BURNeRs
Continued
CleaNING aNd
MaINTeNaNCe
WARNING: Turn off heater
and let cool before cleaning.
CAUTION: You must keep con-
trol areas, burner and circulating
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 cleaning due to
excessive lint from carpeting,
bedding material, pet hair, 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 AIR
INLET HOLE
The primary air inlet holes allow the proper amount
of air to mix with the gas. This provides 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
clean and free of dust and dirt. 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. You can
use a vacuum cleaner in the blow position. If using
compressed air in a can, please follow the direc-
tions on the can. If you don't follow directions on
the can, you could damage the pilot assembly.
Before cleaning, shut off the unit, including the
pilot. Allow the unit to cool for at least thirty
minutes. You will need to remove the front log to
access the front burner.