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NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

LIGHTING INSTRUCTIONS – HONEYWELL AND SIT MILLIVOLT GAS VALVE

WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION 
MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

FOR YOUR SAFETY READ BEFORE LIGHTING

A.

  This appliance has a pilot which must  be lighted with a piezo 

igniter. When lighting the pilot, follow these instructions 
exactly.

B. BEFORE OPERATING

 smell all around the appliance area for 

gas. Be sure to smell next to the fl oor because some gas is 
heavier than air and will settle on the fl oor.

 

WHAT TO DO IF YOU SMELL GAS

•  Extinguish any open fl ame.

• Open 

windows.

•  Do not light any appliance.

•  Do not touch any electrical switches.

TO TURN OFF GAS TO APPLIANCE

1.

  Turn remote wall switch “OFF.” The pilot will remain lit for  

normal service.

2.

  For complete shutdown, turn remote wall switch to “OFF.”

3.

  Access the lower control compartment.

4. 

Depress gas control knob slightly and turn clockwise
                to “OFF.” Do not force.

5. 

Close lower control compartment.

LIGHTING INSTRUCTIONS

1. STOP! 

Read the safety information above on this Page.

2.

  Access the lower control compartment.

3.

  Turn remote wall switch to “OFF.”

4.

  Verify main line shut-off valve is open.

5.

  Push in gas control knob slightly and turn clockwise 

                

to “OFF.”

•  Do not use any phone in your building.

•  Immediately call your gas supplier from a neighbor’s 

phone.

•  If your gas supplier cannot be reached, call the fi re depart-

ment.

C.

  Use only your hand to push in or turn the gas control knob. 

Never use tools. If the knob will not push in or turn by hand, 
do not try to repair it, call a qualifi ed service technician. Force 
or attempted repair may result in a fi re or an explosion.

D.

  Do not use this appliance if any part has been under water. 

Immediately call a qualifi ed service technician to inspect the 
appliance and to replace any part of the control system and 
any gas control which has been under water.

Note: 

Knob cannot be turned from “PILOT” to “OFF” 

 

unless the knob is pushed in slightly. Do not force.

HONEYWELL

MILLIVOLT 

GAS VALVE

SIT 

MILLIVOLT 

GAS VALVE

SIT 

MILLIVOLT PILOT

HONEYWELL

MILLIVOLT PILOT

O

N

OFF

P

IL

OT

L

O

HI

HI

L O W

HT

PT

HT

PT

PILO

T

PIL

O

T

ON

t

i

OFF

OUT

IN

IGNITER

IGNITER

 

6.

  Wait fi ve (5) minutes to clear out any gas. If you then smell gas, 

STOP! Follow “B” in the safety information above on this Page. If you 
do not smell gas, go to the next step.

 

7.

  Push in gas control knob slightly and turn counterclockwise 

                  to “PILOT.”

 

8.

  Push in control knob all the way and hold in. 

Immediately light the pilot by triggering the 
spark igniter (pushing the button) until pilot 
lights. Continue to hold the control knob in 
for about  1     minutes after the pilot is lit. 
Release knob and it will pop back up. Pilot 
should remain lit. If it goes out, repeat steps 5 
through 8.

  If knob does not pop up when released, 

stop and immediately call your service 
technician or gas supplier.

  If pilot will not stay lit after several tries, 

turn the control knob to “OFF” and  call 
your service technician or gas supplier.

 

9.

  Turn  gas  control  knob  counterclockwise                  

to “ON.”

 10.

  Close lower control compartment.

Summary of Contents for DIRECT VENT MERIT LMDV-33 SERIES

Page 1: ...O NOT light any appliance DO NOT touch any electrical switches Do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow your gas suppliers instructions I...

Page 2: ...ns Millivolt Page 17 Lighting Instructions Electronic Page 18 Maintenance Schedule Page 19 Troubleshooting Guide Millivolt Page 20 Troubleshooting Guide Electronic Page 20 Replacement Parts List Page...

Page 3: ...nents Any modification or alteration may void the warranty certification and listings of this unit Theseappliancesandtheirindividualshut off valves must be disconnected from the gas supply piping syst...

Page 4: ...down until it locks in place Figure 1 OPENING CONTROL COMPARTMENT DOOR Operation of millivolt and electronic gas con trol systems are different Before lighting and operatingyourappliancedetermineifyou...

Page 5: ...ons Electronic appliance lighting instructions may also be found on the pull out lighting instruction labels attached to the gas control valve 3 Keep the lower control compartment clean by vacuuming o...

Page 6: ...ed replacement use only the proper replacement logs from manufacturer see Pages 22 23 for ordering information Re Install Embers Logs and Vermiculite Carefully follow placement instructions on Pages 8...

Page 7: ...front of the appliance 4 Swing the bottom of the door out and raise it slightly to lift the top flange of the door frame away from the appliance Installing Glass Enclosure Panels see Figure 6 1 Visua...

Page 8: ...re 8 Logs should be placed in the order shown and per the following instructions WARNING DONOTattempttoinstallthelogs until the appliance installation hasbeencompleted thegasline connected and tested...

Page 9: ...VolcanicStoneandLogsintheorder shown here 1 through 6 and per the instructions onPage8 A E B C D Vermiculite Volcanic Stone Embers DO NOT PLACE EMBERS OVER GAS SLOTS 1 2 3 4 5 6 The2notchesonlogbottom...

Page 10: ...rrespond to photos InstalltheEmbers Vermiculite VolcanicStoneandLogsintheorder shownhere 1through6 andper theinstructionsonPage8 D C E A B 1 2 3 4 5 6 Vermiculite Volcanic Stone DONOTPLACEEMBERSOVERGA...

Page 11: ...hanorangebodythatdoes not soot the shutter opening must be adjusted between these two extremes Air Shutter Adjustment Guidelines If there is smoke or soot present first check the log set positioning t...

Page 12: ...position until the proper flame appearance is achieved 4 Leave the control knob off pilot on in the ON position and the burner OFF ON switch OFF remote switches if applicable 5 When satisfied that the...

Page 13: ...ctlytothe appliance on a pullout panel located within the control compartment TH TP TH TP Thermopile If any of the original wire as supplied must be replaced it must be replaced with Type AWM 105o C 1...

Page 14: ...d system may be operated with electronic and mil livoltsystemswitheithernaturalgasorpropanegas The RCL T comes complete with detailed operating instructions Remote Control Kit Deluxe Cat No Model No D...

Page 15: ...Doors Charcoal LMDV 4035 H0967 SPD40TI 40 Sq Pane Doors Textured Iron H0968 SPD40SP 40 Sq Pane Doors Satin Pewter H0969 SPD40AB 40 Sq Pane Doors Antique Brass Arch Design Arch Pane Design Square Desi...

Page 16: ...nce These kits can be retrofitted to previously installed appliances ref Form 750 166M Polished Brass Brushed Stainless Hood Kits Attractive hoods are available in two styles These hoods are designed...

Page 17: ...your hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand do not try to repair it call a qualified service technician Force or attempted repair ma...

Page 18: ...been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water LIGHTING INSTRUCT...

Page 19: ...o many elbows and or exterior portions of the system being exposed to cold weather Also inspect wall straps or plumbers s tape to ensure it is secure and in place Appliance Checkout Qualified Service...

Page 20: ...witch is still installed on appliance it must be in the OFF position Optional remote switch kits wall switch wall thermostat or remote control A Wall switch or wires defective Check wall switch and wi...

Page 21: ...ommon leads to valve control Mustmeasureatleast19 5VACwith igniter powered see insert A To identify proper lead this check must be done with the valve control con nected and igniter powered NO Check t...

Page 22: ...93L32 1 Lennox Nameplate Logo 12L15 is sold separately Gas Controls SIT Millivolt Natural Gas Propane Gas Part No Qty Part No Qty 12 Gas Valve SIT 43K07 1 88J53 1 13 Piezo Igniter 111061 1 111061 1 14...

Page 23: ...23 NOTE DIAGRAMS ILLUSTRATIONSNOTTOSCALE REPLACEMENT PARTS 7 8 1 2 9 10 13 12 6 19 11 3 5 15 18 16 14 17 4 24 25 26 27 23 22 30 29 32 28 20 31 21 8 LMDV 4035 LMDVT 3328 LMDVR 3530...

Page 24: ...P N 875 028M REV C 06 2005 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 you...

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