kozy heat MINNETONKA 55345-MV Installation Manual page 29

FINALIZING THE INSTALLATION
FLAME APPEARANCE:
Flame appearance is affected by several factors including altitude, venting configuration and fuel quality. Although the venturi setting has
been factory set, adjustments may be necessary for optimal performance and visual aesthetics.
When fireplace is first lit, the flames will be blue. Flames will gradually turn yellowish-orange during first 15 minutes of operation. If
flames remain blue, or become dark orange with evidence of sooting (black tips), the burner tube venturi may need adjustment.
Correct pilot flame
Figure 26a
WARNING Burner tube adjustable venturi positioning should only be performed by a qualified professional service technician.
FRONT BURNER
BACK BURNER
VENTURI POSITION
Closed too far
Open too far
NOTE If soot is present, check log positioning before adjusting burner venturi. Logs must not block burner ports.
SLIGHT ADJUSTMENTS
IMPORTANT
INCREMENTS UNTIL DESIRED LOOK IS ACHIEVED. ALWAYS BURN FIREPLACE FOR AT LEAST 15 MINUTES
AND ALLOW TIME TO COOL BEFORE MAKING ANY FURTHER ADJUSTMENTS.
TO ADJUST BACK (MAIN) BURNER VENTURI:
WARNING To avoid property damage or personal injury, allow fireplace time to cool before making any adjustments.
Back (main) burner venturi adjustment handle is attached to underside of control board. Access through lower grill opening. Loosen wing
nuts, adjust as necessary, pulling handle forward to open, pushing backwards to close. Tighten wing nuts.
Figure 26c
Figure 26b
FACTORY SET BURNER TUBE VENTURI SETTINGS
(ADJUST AS NECESSARY FOR YOUR INSTALLATION)
NATURAL GAS
100% CLOSED
1/8" (3mm) OPEN
BURNER TUBE VENTURI ADJUSTMENT GUIDELINES
FLAME COLOR
Dark orange flame with black tips
Blue flames
TO BURNER VENTURI
Lazy yellow flames - ideal
Dark orange flames / black tips
Venturi closed too far
Excessive burner media
Open venturi setting slightly
Close venturi setting slightly
OPENING CREATE DRAMATIC
26
Short blue flames
venturi open too far
Lifting (ghosting) flames
Improper Venting
Gas pressure too high
LP (PROPANE) GAS
100% OPEN
100% OPEN
VENTURI ADJUSTMENT
RESULTS. ADJUST AT SLIGHT