kozy heat NCK-SL42-SPB, Manual, Page: 4 / 6

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BURNER PORTS
Figure 4, Media Dam Placement
LAZY, YELLOW FLAMES
IDEAL
Figure 5, Burner Ports Location
Table 2, Factory Set Venturi Openings
Fuel Center Burner Venturi Side Burner Venturis
NG 1/8 in (3 mm) 1/8 in (3 mm)
F. Test Inlet Pressure
IMPORTANT: For a proper pressure reading, apply the gas
supply pressure tests with all other gas appliances on or at
full capacity in the household.
Step 1: Loosen the inlet (IN) pressure tap screw
(counterclockwise) on the gas valve.
Step 2: Attach a manometer to the inlet pressure tap with a ¼
in (6mm) ID hose.
Step 3: Light the pilot and burner. Verify manometer reading
is between the recommended minimum and maximum
pressure settings. See Table 3.
Step 4: Turn off pilot and burner.
Step 5: Disconnect hose and tighten the inlet pressure tap
screw (clockwise). The screw should be snug; do not
over tighten.
Step 6: Relight the pilot and burner.
Step 7: Reattach the manometer to the inlet pressure tap to
verify tap is completely sealed. Manometer should read
no pressure.
Table 3, Inlet Gas Supply Pressures
Fuel Minimum Maximum
NG 5” WC (1.25 kPa) 10.5” (2.62 kPa)
G. Test Manifold Pressures
Step 1: Loosen the manifold (OUT) pressure tap screw
(counterclockwise) on the gas valve.
Step 2: Attach a manometer to the outlet pressure tap with a ¼
in (6mm) ID hose.
Step 3: Light the pilot and burner. Verify manometer reading
is between the recommended low and high pressure
settings. See Table 4.
Step 4: Turn off pilot and burner.
Step 5: Disconnect hose and tighten the outlet pressure tap
screw (clockwise). The screw should be snug; do not
over tighten.
Step 6: Relight the pilot and burner.
Step 7: Reattach the manometer to the outlet pressure tap to
verify tap is completely sealed. Manometer should read
no pressure.
Table 4, Manifold Gas Supply Pressures
Fuel Low High
NG
1.1” WC (.27 kPa) 3.8” WC (.85 kPa)
H. Verify Operation
Step 1: Light the pilot. Visually check the pilot flame to verify
flame envelopes the top of the flame sensor and extends
far enough onto the burner for proper ignition.
Step 2: To adjust the pilot flame, turn the pilot adjustment screw
on the gas valve clockwise to decrease flame, and
counterclockwise to increase flame.
Step 3: Turn the appliance off.
Step 4: Affix the gas type sticker on or near the gas valve.
Step 5: Reinstall the glass frame assembly and safety barrier.
Step 6: Light the pilot and burner. Visually check the main burner
flame appearance for proper ignition and operation
of the fireplace. Refer to the installation manual for
complete adjustment procedures.
Step 7: Complete and affix the ‘Gas Conversion’ labels as close
to the rating plate as possible.
Step 8: Verify the input rating of the converted appliance. See
Table 5.
Table 5, Input Ratings
Fuel Minimum Input Input
NG 15,000 Btu/h (4.4 kW) 42,000 Btu/h (12.3 kW)
GLASS
MEDIA DAM
BURNER COVER/MEDIA TRAY
GLASS MEDIA
SIDE VIEW
Figure 6, Correct Burner and Pilot Flame Appearance