Lennox DR4540-2 Guide

Page 1



2000 Lennox Industries Inc.

Dallas, Texas

WHAT TO DO IF YOU SMELL GAS:

If the information in this manual is not

followed exactly, a fire or explosion

may result causing property damage,

personal injury or loss of life.

WARNING

Do not store or use gasoline or other

flammable vapors and liquids in the

vicinity of this or any other appliance.

Installation and service must be per-

formed by a qualified installer, ser-

vice agency or the gas supplier.

Do not try to light any appliance.

Do not touch any electrical switch; do not

use any phone in your building.

Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

If you cannot reach your gas supplier, call

the fire department.

Extinguish any open flames.

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE Litho USA

DT–2 & DR–2

MERIT



SERIES

504,172M

04/2000

DR4540–2 LOUVERED FACE

REAR VENT MODEL SHOWN

VENTED GAS FIREPLACE HEATER

DIRECT VENT MODELS

DT4540–2 LOUVERED FACE

TOP VENT MODEL SHOWN

Page 2

WARNING

Product contains fiberglass wool.

Disturbing the insulation in this product during

installation, maintenance, or repair will expose you

to fiberglass wool. Breathing this may cause lung

cancer. (Fiberglass wool is known to the State of

California to cause cancer.)

Fiberglass wool may also cause respiratory, skin,

and eye irritation.

To reduce exposure to this substance or for further

information, consult material safety data sheets

available from address shown below, or contact

your supervisor.

Lennox Industries Inc.

P.O. Box 799900

Dallas, TX 75379-9900 USA

WARNING

If overheating occurs or if gas supply fails to shut

off, shut off the manual gas valve to the appliance

before shutting off electrical supply.

WARNING

Do not use this furnace if any part has been under

water. Immediately call a qualified service techni

cian to inspect the furnace and to replace any part

of the control system and any gas control which

has been under water.

CAUTION

Before attempting to perform any service or mainte

nance, turn the electrical power to unit OFF at dis

connect switch.

IMPORTANT

Any additions, changes, or conversions required in

order for the appliance to satisfactorily meet the ap-

plication needs must be made by a Lennox service

technician using factory specified and approved

parts.

WARNING

Improper installation, adjustment, alteration, ser-

vice or maintenance can cause property damage,

personal injury or loss of life. Installation and ser-

vice must be performed by a qualified installer, ser-

vice agency or the gas supplier.

Important Directions

This appliance is intended only for use as indi-

cated in this manual and in the installation

instructions. Under no circumstances should

this fireplace be used to burn wood, paper, or

other combustibles of any kind.

The appliance will emit an odor for the first 10 to

12 hours of operation. Make sure the room is

well-ventilated and the burner is set for high

flame operation (if applicable) during this period.

Surface temperatures on the appliance are very

high. Make sure that both children and adults are

aware of the danger of burns or clothing ignition.

Do not leave children unsupervised in the room

with the appliance.

Keep clothing, draperies and furniture well away

from the front of the appliance.

Do not leave damp or wet clothing or other flam-

mable material to dry on or near the appliance.

If for any reason the glass frame is removed, all

three securing screws must be replaced and

tightened securely before the unit is put back

into operation.

Do not use this appliance if any part has been un-

der water. Call a qualified service technician to

inspect the appliance and replace electrical com-

ponents.

The control access panel becomes hot during

unit operation, and must be opened with care.

Refer to figure 1.

Service, including cleaning inside fire box,

should be done by a qualified service technician.

The appliance should be inspected and cleaned

annually by a qualified service technician. Ser-

vice should include a thorough inspection of the

pilot and burner flame. The vent termination

should also be inspected for any blockage.

Clean inside and outside glass surfaces, and any

other of the appliance’s outside surfaces, using a

mild detergent/water solution and a soft cloth. DO

NOT use abrasive cleansers which might scratch

these surfaces. DO NOT attempt to clean these

surfaces when the appliance is operating or they

are hot to the touch. Glass cleaner is available as

Lennox part number 19N74.

Service and cleaning of internal components

must be performed by a qualified service techni-

cian.

WARNING

Do not operate the appliance with glass removed,

cracked or broken in any way. Glass must be re-

placed by a qualified service technician.

Page 3

Lighting Information and Operation

WARNING

If you do not follow these instructions exactly, a fire

or explosion may result causing property damage,

personal injury or loss of life.

BEFORE LIGHTING smell all around the appliance area

for gas. Be sure to smell next to the floor because some

gas is heavier than air and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS

Do not try to light any appliance.

Do not touch any electric switch; do not use any

phone in your building.

Immediately call your gas supplier from a neighbor's

phone. Follow the gas supplier's instructions.

If you cannot reach your gas supplier, call the fire de

partment.

Use only your hand to turn the gas control knob(s). Never

use tools. If the knob will not turn by hand, do not try to repair

it, call a qualified service technician. Force or attempted re-

pair may result in a fire or explosion.

PLACING UNIT INTO OPERATION

(Millivolt Valves with Piezo Ignitor)

Fireplaces which include a millivolt valve are equipped

with a pilot which must be lit by a Piezo ignitor (red ignitor

button). When lighting the pilot, follow these instructions

exactly.

GAS VALVE OPERATION – Millivolt Valve (Figure 2)

1 – STOP! Read the safety information at the beginning

of this section.

2 – Turn OFF the burner switch (if applicable), or set the

thermostat to the lowest setting (if applicable).

3 – Turn off all electrical power to appliance (if applicable).

4 – Open the control access panel. See figure1.

5 – Push in gas control knob slightly and turn clockwise

to OFF.

NOTE – Knob cannot be turned from PILOT to OFF un-

less knob is pushed in slightly. Do not force.

Insert the tip of a finger of each hand (with the back of the

hands toward the panel) into the cutout in the bottom of

the panel at the positions shown, and rotate the panel

down.

The control access panel becomes hot during

unit operation, and must be opened with care:

TO OPEN THE CONTROL ACCESS PANEL

FIGURE 1

6 – Wait five (5) minutes to clear out any gas. Then, smell

for gas, including near the floor. If you smell gas, STOP!

Follow the safety instructions given in the column to the

left. If you do not smell gas, go to the next step.

7 – Press partially and turn gas valve knob counterclock-

wise to PILOT.

8 – Push control knob in until it stops and hold knob in this

position. IMMEDIATELY light the pilot by pushing the

red Piezo ignitor button. Continue to press control knob

for 25 seconds after the pilot is lit. Release knob. It

should pop back up. Pilot should remain lit. If pilot goes

out, repeat steps 5 through 8.

GAS VALVE SHOWN IN PILOT POSITION

CONTROL

KNOB

HI/LO FLAME

ADJUSTMENT KNOB

MILLIVOLT GAS VALVE

FIGURE 2

9 – Press partially and turn gas valve knob counterclock-

wise to ON.

10 –Restore electrical power to appliance (if applicable)

11 –Turn ON the burner switch (if applicable), or set the

thermostat to the desired setting (if applicable).

12 –Close the control access panel.

NOTE – If gas valve is turned to OFF from ON or PILOT

while appliance is in operation, gas valve will latch in OFF

position for 25 seconds.

Page 4

13 – If the appliance will not operate, follow the instructions

“Turning Off Gas to Unit” and call your service technician

or gas supplier.

NOTE - Do not be alarmed if you notice an odor during the

initial 10 to 12 hours of operation. This is caused by ex

posing the components to heat for the first time. The odor

will dissipate quickly if windows are opened to allow in

creased air circulation.

TURNING OFF GAS TO UNIT

1 – Turn OFF the burner switch (if applicable), or set the

thermostat to the lowest setting (if applicable).

2 – Turn off all electrical power to appliance.

3 – Open the control access panel. See figure1.

4 – Push in gas control knob slightly and turn clock-

wise to OFF. Do not force.

5 – Close the control access panel.

PLACING UNIT INTO OPERATION

(Electronic Gas Valves)

Fireplaces equipped with an ignition device which will au-

tomatically light the burner. Do not try to light the burner

by hand. Follow these instructions exactly.

GAS VALVE OPERATION– Electronic Valve (Figure 3)

1 – STOP! Read the safety information at the beginning

of this section.

2 – Turn OFF the burner switch (if applicable), or set the

thermostat to the lowest setting (if applicable).

3 – Turn off all electrical power to the appliance.

4 – This appliance is equipped with an ignition device

which automatically lights the burner. Do not try to

light the burner by hand.

5 – Wait five (5) minutes to clear out any gas. Then, smell

for gas, including near the floor. If you smell gas, STOP!

Follow the safety instructions given in the left column on

the previous page, entitled: WHAT TO DO IF YOU

SMELL GAS." If you do not smell gas, go to the next

step.

ELECTRONIC GAS VALVE

HI/LO FLAME

ADJUSTMENT

KNOB

FIGURE 3

6 – Restore electrical power to the appliance.

7 – Turn ON the burner switch (if applicable), or set the

thermostat to the desired setting (if applicable).

8 – If the appliance will not operate, follow the instructions

to turn off gas to unit and call a service technician or

gas supplier.

NOTE - Do not be alarmed if you notice an odor during the

initial 10 to 12 hours of operation. This is caused by ex

posing the components to heat for the first time. The odor

will dissipate quickly if windows are opened to allow in

creased air circulation.

TURNING OFF GAS TO UNIT

1 – Turn OFF the burner switch (if applicable), or set the

thermostat to the lowest setting (if applicable).

2 – Turn off all electrical power to appliance.

3 – Turn OFF gas supply at main manual shut-off valve lo-

cated near the fireplace.

Page 5

PLACING FIREPLACE INTO OPERATION

1 – Turn ON the burner switch (if applicable), or set the

thermostat to the desired setting (if applicable).

Millivolt models only, and in applications without

optional appliance-mounted or optional wall-

mounted ON/OFF switch or optional thermostat

– Press gas valve knob partially and turn counter-

clockwise to ON.

2 –

Optional standard blower

, if installed, will energize

immediately. Burner will ignite in approximately three

to five seconds.

Optional deluxe blower

, if installed, will self-energize

when a comfortable minimum temperature has been

reached.

NOTE – Immediately after burner ignites, condensate may

temporarily fog glass. This is normal. Fog will clear as soon

as temperatures within the fire box rise. If droplets continue

to form after 15 minutes of operation on a high-flame set-

ting, contact a qualified service technician.

NOTE – During the initial operation of the appliance, a

white film my form on the inside of the glass. This is normal.

If this occurs, clean the glass after the first 5 hours of use.

Burner Flame Adjustment

The burner flame on this appliance may be adjusted at the

gas valve to obtain the desired heating output. Burner

flame color varies with the different log sets and burners

available. In most cases the flame will be blue at start-up

and turn yellow after 5 to 10 minutes of operation. The

burner flame should be inspected at the beginning of each

heating season and burner should be cleaned by a ser-

vice technician, if necessary.

Blower Operation (Deluxe models)

The optional deluxe blower may be controlled by a rheo-

stat (provided with the deluxe blower) field-mounted re-

motely or on the appliance panel. The blower speed se-

lected should approximate the heat output adjustment at

the gas valve. A high blower speed matched with a low

heat output can lead to condensation.

Vent Termination Inspection

Annually (before the heating season) inspect the ap-

pliance vent termination for any obstructions. If any are

found, remove them.

Contact your Lennox dealer for a periodic inspection by a

qualified service technician.

Service Reminder

Call your Lennox service technician if unit is inoperative.

Before calling, always check the following to be sure ser-

vice is required.

1 – Check ON/OFF appliance-mounted switch (if appli-

cable) or wall-mounted switch (if applicable) to make

sure it is in ON position.

2 – Check room thermostat, if applicable, for proper set-

ting.

3 – Is pilot lit?

4 – Is gas valve in ON position (millivolt units)?

5 – Is gas turned ON at meter?

6 – Is manual main shut-off valve open?

7 – Is electrical power turned ON to the appliance (if ap-

plicable)?

Contact your local independent Lennox dealer for re-

placement parts.

To ensure the safe operation of your Lennox gas ap-

pliance and to keep it in peak operating condition year af-

ter year, contact your independent Lennox dealer about a

planned service program.

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