Lennox Hearth B-Vent Elite LBV-3824MP-H - Manual (Page 14)

14 NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.
Electronic Appliances
Step 8. Honeywell Electronic Valves - See
Figure 31 and the instructions provided with
the kit. Remove the slotted cap screw, o-ring,
pressure-regulating adjusting screw and
spring. Retain all parts for possible later use.
Install new components from the kit. Black
cap and red spring for propane gas units.
Silver cap and stainless steel spring fro natural
gas units. Before installing the cap, attach
manometer to the manifold side pressure test
fitting and adjust screw until 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.
Figure 27
Step 5. Honeywell Systems - See Figure 28
and the instructions provided with the kit. Re-
move the black thread-protecting cap. Remove
the conversion flip cap by turning it counter-
clockwise. Invert the flip cap so that the letters
associated with the desired gas type are posi-
tioned closest to the valve body.
NG is for natural gas and LP is for propane.
Tighten the flip cap by turning it clockwise.
Replace the black thread-protecting cap.
Figure 28
Figure 29
Pressure
Regulator
Remove
These
Components
Flip Cap
Thread
Protector
Pilot
Orifice
Step 1. Turn off the gas supply to the appli-
ance. Remove the front glass door (if used)
from the appliance. Access the control com-
partment.
Step 2. Carefully remove the logs. Exercise
care as not to break the logs.
Step 3. Locate the screws securing the burner
(tray) to the appliance. Remove the burner
and retain the securing screws.
Millivolt Appliances
Step 4. SIT Systems - Refer to Figure 27 and
the instructions provided with the kit. Using a
Torx T20, remove and discard the three pres-
sure regulator mounting screws. Remove the
pressure regulator, spring, poppet, diaphragm
and bushing. Discard all removed compo-
nents. Ensure the rubber gasket installed on
the back of the replacement pressure regulator
is properly positioned and install the new pres-
sure regulator using the new screws supplied
with the kit. Tighten screws to 25 In. lb. torque.
Step 6. All Millivolt Systems – Attach ma-
nometer 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.
Step 7. See Figure 29 and remove the pilot
hood assembly to access the hexed pilot ori-
fice. Remove and replace the orifice with the
one provided with the kit.