Lennox Hearth EDVI25 - Manual (Page 9)

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
9
If the burner flame appearance differs greatly
from what is shown on this Page (see Burner
Flame Appearance), some adjustment from
the factory setting for the air shutter gap may
be necessary (to compensate for variables in
the installation and fuel such as, BTU value
composition, gas pressure, specific gravity
of gas, altitude, etc.).
See Table 5 for Burner Air Shutter Adjust-
ment Guidelines.
Initially, always position the air shutter to the
factory setting as shown in Figure 20 (adjust-
ment rod is located in the lower control area).
This can be done by moving the adjustment
rod up or down accordingly. Allow the burner
to operate for at least 15 minutes. Observe
the flame continuously. If it appears weak
or sooty as previously described, adjust the
air shutter to a more open position until the
proper flame appearance is achieved.
Burner Adjustment Procedure
Figure 20
Burner Air Shutter Adjustment
Adjustment Rod Up
(1/8" Open Position)
Air Shutter
Burner Tube
Adjusting Set Screw
Adjustment Rod Down
(full open position)
FACTORY AIR SHUTTER OPENING SETTING
Model Gas Type Air Shutter Gap
EDVI5 Natural Gas 3/16” (4.76 mm)
Propane 3/8” (9.5 mm)
EDVI30 Natural Gas 5/16” (7.94 mm)
Propane 1/” (1.7 mm)
EDVI35 Natural Gas 3/8” (9.5 mm)
Propane 1/” (1.7 mm)
Ref. Air shutter Patent:
U.S. Pat. 5,553,603
WARNING
Air shutter adjustment should
only be performed by a qualified
professional service technician.
CAUTION
The adjustment rod and nearby
appliance surfaces are hot. Exer-
cise caution to avoid injury while
adjusting flame appearance.
The following chart (Table 5) is provided to aid you in achieving the correct air shutter
adjustment for your installation.
Table 5
Air Shutter Adjustment Guidelines
Amount of
Primary Air
Flame Color Air Shutter
Adjustment
If air shutter is
closed too far Flame will be orange Air shutter gap should
be increased
If air shutter is open
too far Flame will be blue Air shutter gap should
be decreased
Carefully install the seven-piece log set into the firebox as shown in these instructions. All
logs should fit onto corresponding pins and/or log stoppers. This will ensure a proper flame
and safe combustion.
Note: Place some vermiculite around the burner as shown in Figure 30, if necessary, before
installing the logs (the entire bag of vermiculite will NOT be used).
LOGS, VERMICULITE AND EMBERS - Models EDVI5 & EDVI30
(For EDVI35 Log Installation Instructions, see Page 11).
Top Left Log
Front Center Log
Top Right Log
Figure 21
Rear Log
Front Right Log
Front Left Log
Center Log
Installation Instructions
CAUTION
Carbon will be produced if the air shutter is closed too much. Any
damage due to carboning resulting from improperly setting the air
shutter is not covered under the warranty.
WARNING
If logs are not installed according to the directions shown here, flame
impingement and improper combustion could occur and result in soot
and/or excessive production of carbon monoxide (CO) - a colorless,
odorless, toxic gas.