Lennox LMDV-3530CNM Manuel D'Instructions

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

P/N 850,029M REV. G 05/2008

Lennox reserves the right to make changes at any time, without notice, in design,

materials, specifications, prices and also to discontinue colors, styles and products.

Consult your local distributor for fireplace code information.

1110 West Taft Avenue • Orange, CA 92865

Figure 68

Retaining

Clip

Ignitor

Assembly

Pilot

Assembly

Pilot

Orifice

Flare Nut

Figure 69

Step 8. Reassemble all removed components

by reversing the procedures outlined in the

preceding steps. 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).

Step 9. Attach the conversion label provided

in the conversion kit to the rating plate on the

appliance.

Step 10. Turn on gas supply and test for gas

leaks.

All Models

Step 7. Remove the burner orifice from the

manifold and replace it with the one provided

with the kit. See

Table 14 for orifice sizes

required for use with natural gas or propane

gas. Figure 69 illustrates the orifice.

Step 6. Electronic Appliances -

Honeywell Systems

See Figure 67 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

for 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.

See Figure 68 and replace the pilot orifice

as follows: Remove the Igniter assembly

retainer clip, and carefully remove the Igniter

assembly.

Exercise extreme care to prevent damage to or

breakage of the Igniter assembly. Remove the

screw securing the pilot assembly to its mount-

ing bracket. Back off the flare nut at the end

of the pilot gas line to free the pilot assembly

from the gas line. Remove the pilot orifice

and replace it with the one provided with the

conversion kit. Reinstall the pilot assembly

by reversing the steps detailed here.

When reinstalling the Igniter assembly, use

extreme care to prevent damage and break-

age. Do not apply any leverage to the Igniter

assembly while restoring the retainer clip to

its original position.

Figure 67

Spring

Adjusting

Screw

Slotted

Cap

OFF

CONTROL

Manifold

Pressure

Test Port

Inlet Pressure Test Port

Burner Orifice Sizes

Elevation 0-4500 feet ( 0-1372 meters)

Model

Series

Natural

Gas

drill

sizez(inches)

Propane

Gas

drill size (inches)

LMDVT-3328

LMDVR-3328

#45 (.082")

39L66 •

1.2mm (.048")

99K78 •

LMDV-3530

#44 (.086")

60J8001 •

#55 (.052")

19L5201 •

LMDV-4035

#37 (.104")

24M1001 •

1/16" (.062")

21L0101 •

* Standard size installed at factory
• Part /Cat. Number

Table 14

Note: If the Igniter is damaged, a replacement kit is available - order Catalog Number

87L54.