35
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Figure 51
Millivolt Appliances
Step 4.
SIT Systems
- Refer to
Figure 52
and
the instructions provided with the kit. Using
a Torx T20 (with 1/4" shank and center hole),
remove and discard the three pressure regulator
mounting screws. Remove the pressure regu-
lator, spring, poppet, diaphragm and bushing.
Discard all removed components
.
Ensure the rubber gasket installed on the back of
the replacement pressure regulator is properly
positioned and install the new pressure regula-
tor using the new screws supplied with the kit.
Tighten screws to 25 In. lb. torque.
Pressure
Regulator
Remove
These
Components
Pilot
Orifice
Electronic Appliances
Step 7.
Dexen Electronic Valves
- See
Figure
54
and the instructions provided with the kit.
Remove and discard the two pressure regula-
tor mounting screws. Remove the pressure
regulator and diaphragm. Discard all removed
components. Ensure the provided diaphragm
is installed properly onto the replacement
pressure regulator and install the new pres-
sure regulator using the new screws supplied
with the kit. Tighten screws.
See
Figure 55
and replace the pilot orifice as
follows: Remove pilot hood assembly to access
the phillipped pilot orifice. Remove and replace
the orifice with the one provided with the kit.
Exercise extreme care to prevent damage to
or breakage of the igniter assembly.
Step 5.
Attach manometer to the manifold side
pressure test fitting and verify manifold pres-
sure reads 3.5 inches water column (0.87 kPa)
for natural gas, and 10.0 inches water column
(2.49 kPa) for propane gas.
Step 6.
See
Figure 53
and remove the pilot
hood assembly to access the hexed pilot orifice.
Remove and replace the orifice with the one
provided with the kit.
Figure 52
Figure 53
Burner Assembly
Gas Valve
Assembly
Orifice
Summary of Contents for Merit MLDVT-45NE
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