Kozy Heat Fireplaces NCK-NK36-S Mode D'emploi page 4

E. Convert Gas Control Valve
It is easier to convert the gas control valve before placing
the gas fireplace insert into an existing fireplace.
1. Remove the control board access cover on the left side
of the appliance. This will give you greater access to the
control board when it is installed.
2. Unplug the stepper motor from the X6 plug on the con-
trol module.
3. Remove the (2) Torx screws that secure the stepper
motor to the valve.
4. Install the new stepper motor with the included Torx
screws.
5. Connect the new stepper motor to the X6 plug on the
control module.
F. Complete the Conversion
1. Adjust the venturis on all three burners. Loosen the
screw, then adjust the cap to the correct setting. Re-
tighten the screw. See Table 2.
2. Reinstall all components previously removed. Refer to
the installation manual for more information.
3. Reconnect electrical power.
4. Check for leaks at all connections with soapy water.
Table 2, Factory Set Venturi Openings
Fuel
Natural Gas
Figure 3 - Burner venturis
NDK-36-DV
Rev. 1 - July 2023
Opening
Left: 1/8" (3mm)
Right: 1/8" (3mm)
Rear: 5/8" (16mm)
G. 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.
1. Loosen the inlet (IN) pressure tap screw
(counterclockwise) on the gas valve.
2. Attach a manometer to the inlet pressure tap with a
1/4 in (6mm) ID hose.
3. Light the pilot and burner. Verify manometer reading is
between the recommended minimum and maximum
pressure settings. See Table 3.
4. Turn off pilot and burner.
5. Disconnect hose and tighten the inlet pressure tap
screw (clockwise). The screw should be snug; do not
over tighten.
6. Relight the pilot and burner.
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
Natural Gas 5" WC (1.25 kPa)
7" WC (1.74 kPa)
recommended
H. Test Manifold Pressure
1. Loosen the manifold (OUT) pressure tap screw
(counterclockwise) on the gas valve.
2. Attach a manometer to the outlet pressure tap with a
1/4 in (6mm) ID hose.
3. Light the pilot and burner. Verify manometer reading is
between the recommended low and high pressure
settings. See Table 4.
4. Turn off pilot and burner.
5. Disconnect hose and tighten the outlet pressure tap
screw (clockwise). The screw should be snug; do not
over tighten.
6. Relight the pilot and burner.
7. Reattach the manometer to the inlet pressure tap to
verify tap is completely sealed. Manometer should read
no pressure.
Table 4, Manifold Gas Supply Pressures
Fuel Low
Natural Gas 1.1" WC (.27 kPa)
4
Maximum
10" WC (2.49 kPa)
High
3.8" WC (.95 kPa)
PFS Report Number: 23-152
Starting serial #23 N36DV00001 38