Lennox Hearth ADAGIO-EN - Manual (Page 34)

34
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
34
Step 6. Refer to Figure 57 and remove the
pilot hood assembly to access the hexed pilot
orifice. Remove and replace the orifice with
the one provided with the kit.
Step 7. (Refer to Figure 55 on Page 33 and
Figure 58)
VERIFY THE PROPER ORIFICE SIZE BE-
FORE INSTALLING IT.
A. Remove the orifice from the manifold and
replace it with the one provided in the kit.
See Table 9 for orifice sizes for natural and
propane models. Figure 58 illustrates the
orifice. Use pipe joint compound or Teflon
tape on all pipe fittings before installing
(ensure propane resistant compounds are
used in propane applications, do not use
pipe joint compounds on flare fittings).
SIT Millivolt Gas
Valve Shown
Pressure
Regulator
Remove
These
Components
Figure 56
Millivolt & Electronic Gas Valves
HI
LO
SIT Electronic Gas Valve
Pressure
Regulator
SIT Millivolt Pilot Assembly Shown
Figure 57
Pilot
Orifice
Thermopile
(on millivolt
pilot assem-
blies only)
Millivolt & Electronic Pilot Assemblies
SIT Electronic Pilot
Pilot
Orifice
B. Retrieve the burner and slide the venturi
tube over the orifice (see Figure 55). Set
the burner assembly into its position and
secure it.
Step 8. Reassemble the remaining components
by reversing the procedures outlined in the
preceding steps.
Step 9. Attach the conversion label provided
in the conversion kit to the rating plate on the
appliance.
Figure 58 - Burner Orifice
Step 10. Turn on gas supply and test for gas
leaks. See Test All Connections For Gas Leaks
on Page 25.
Step 11. Attach manometer to the manifold
side pressure test fitting and verify manifold
pressure reads 3.5 inches water column (0.87
kPa) for natural gas, and 10.0 inches water
column (2.49 kPa) for propane gas.
ALWAYS TEST PRESSURES WITH THE VALVE
REGULATOR CONTROL AT THE HIGHEST
SETTING.
Burner Orifice Sizes
Elevation 0-4500 feet ( 0-1372 meters)
Model
Series
Nat.Gas
drill size (inches)
Propane
drill size (inches)
ADAGIO-MN
.067"
(#51)
-------------
ADAGIO-MP -------------
.042"
(#58)
ADAGIO-EN
.067"
(#51)
-------------
ADAGIO-EP
if field converted
-------------
.042"
(#58)
Table 9