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19

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

SIT Millivolt Wiring Diagram

If any of the original wire as supplied must be replaced,

it must be replaced with Type AWM105

°

C – 18 GA. wire.

Thermopile

HT

PT

HT

PT

*TWIST WIRES “A” AND “B” TOGETHER TO OPERATE UNIT

SOLELY BY MANIPULATING THE GAS VALVE CONTROL KNOB;

OR CONNECT WIRES TO  OPTIONAL ON/OFF SWITCH OR WALL

SWITCH OR THERMOSTAT OR REMOTE CONTROL RECEIVER

TO OPERATE UNIT.

*OPTIONAL ON/OFF SWITCH,

 WALL SWITCH, THERMOSTAT

OR REMOTE CONTROL RECEIVER

A

B

HC

TI

WS 

TI

MI

L

WT

BK

BK

BK

Schematic Representation Only

1.  If any of the original wire as supplied must be replaced, 

1.    

it must be replaced with 

  

T ype A WM 105 

°

C – 18 GA. wire. 

2.  120V , 60Hz – Less than 3 amps. 

BK 

Junction Box 

Tr ansf. 

120  V. 

24  V 

Facto ry  Wire d 

Field Wire d 

BL

Electronic Wiring Diagram (Honeywell) 

Showing the Blower Wiring for the Optional 

FBK-100 and FBK-200 Kits 

BL 

OPT 

BLOWER 

*OPTIONAL 

ACCESSOR Y 

SWITCH 

120 

 V AC. 

BK 

Gas  Va lve 

IGNITER 

PILOT 

ASSEMBL Y 

Break Of f 

Ta b 

BK 

*Blower speed control switch is provided in FBK200 blower kit. 

Outlet Box 

Green Ground 

Screw 

Hot side of Outlet 

Schematic Representation Only 

**ON/OFF Switch (Integral 

with Gas  Va lve ) 

**Leave the ON/OFF switch, which is integral 

with the gas valve, in the ON position. 

Red 

pigtail 

Black 

pigtail 

White Wire 

to Opposite 

Side 

LIMIT SWITCH 

  OPTIONAL W ALL SWITCH 

OR OPTIONAL THERMOS TAT  OR 

OPTIONAL REMOTE RECEIVER 

BK 

BK

1. If any of the original wire as supplied must be replaced,

1.  

it must be replaced with

 

Type AWM 105 C – 18 GA. wire.

2. 120V, 60Hz – Less than 3 amps.

BK

Junction Box

Transf.

120 V.

24 V

Factory Wired

Field Wired

BL

Electronic Wiring Diagram (Honeywell)

Showing the Blower Wiring for the Optional

FBK-250 Kits

R

BL

OPT

BLOWER

G

W

120

 VAC.

BK

W

Gas Valve

B

R

IGNITER

PILOT

ASSEMBLY

BK

Outlet Box Green

Ground Screw

Hot side of Outlet

Schematic Representation Only

*ON/OFF Switch (Integral

with Gas Valve)

White Wire

To Opposite

Side

Optional FBK-250

Module

*Leave the ON/OFF switch, which is integral

with the gas valve, in the ON position.

OPTIONAL ON/OFF SWITCH,

 WALL SWITCH, THERMOSTAT

OR REMOTE CONTROL RECEIVER

G

W

LIMIT SWITCH

BK

BK

Figure 19

Figure 20

Figure 21

WIRING DIAGRAMS

Wiring diagrams are provided here for reference 

purposes only.  This information is also provided 

on schematics attached directly to the appliance 

on a pullout panel located within the control 

compartment.

CAUTION:  LAbEL ALL WIRES 

PRIOR TO DISCONNECTION WHEN 

SERVICING CONTROLS.  WIRING 

ERRORS CAN CAUSE IMPROPER 

AND DANGEROUS APPLIANCE 

OPERATION.

WARRANTY

Your gas appliance is covered by a limited twenty 

year warranty. You will find a copy of the war-

ranty accompanying this manual.  Please read 

the warranty to be familiar with its coverage.

Retain this manual. File it with your other docu-

ments for future reference.

REPLACEMENT PARTS

A  complete  parts  list  is  found  at  the  end  of 

this manual. Use only parts supplied from the 

manufacturer.

With proper care and maintenance, your appli-

ance will provide many years of enjoyment. If 

you should experience any problem, first refer 

to the troubleshooting guide in this manual. If 

problem persists, contact your Lennox Hearth 

Products dealer or distributor.

Normally, all parts should be ordered through 

your  Lennox  Hearth  Products  distributor  or 

dealer. Parts will be shipped at prevailing prices 

at time of order.
When  ordering  repair  parts,  always  give  the 

following information:

1. The model number of the appliance.

2. The serial number of the appliance.

3. The part number.

4. The description of the part.

5. The quantity required.

6. The installation date of the appliance.
If  you  encounter  any  problems  or  have  any 

questions  concerning  the  installation  or  ap-

plication of this system, please contact your 

dealer or distributor.

LENNOX HEARTH PRODUCTS

1508 Elm Hill Pike, Suite 108

Nashville, TN 37210

visit us at www.Lennox.com

1-800-9-LENNOX

PRODUCT REFERENCE INFORMATION

We recommend that you record the following 

important  information  about  your  fireplace.  

Please  call  Lennox  Hearth  Products  for  the 

phone number of your nearest Lennox Hearth 

Products dealer who will answer your questions 

or address your concerns. 

Your Fireplace's Model Number ___________________________________________

Your Fireplace's Serial Number ___________________________________________

The Date On Which Your Fireplace Was Installed ______________________________

The Type of Gas Your Fireplace Uses _______________________________________

Your Dealer's Name   ___________________________________________________  

ATTENTION :  AU MOMENT DE L'ENTRETIEN DES COMMANDES, ÉTIQUETEZ 

TOUS LES FILS AVANT DE LES DÉbRANCHER.  DES ERREURS DE CÁbLAGE 

PEU-VENT ENTRAÎNER UN FONCTIONNEMENT INADÉQUAT ET DANGEREUX.

Summary of Contents for MERIT Plus MPB3328CNE-B

Page 1: ...ersonal injury or death vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use an...

Page 2: ...rmation 4 Attaching the Safety in Operation Warnings 5 General Information 6 Operation Care of Your Appliance 8 Gas Controls Control Compartment Access 8 Variable Flame Adjustment 9 Venting Operation...

Page 3: ...a s curit page 4 Toutes les parties de votre foyer Lennox Hearth Products deviennent EXTR MEMENT CHAUDES Instale una malla o barrera f sica para evitar el contacto directo con el vidrio y prevenir las...

Page 4: ...res s ils viennent en contact avec la surface chaude Il est recommand d installer une barri re physique si des personnes risques habitent la maison Pour emp cher l acc s un foyer ou un po le installez...

Page 5: ...verifique que el interruptor opera la chimenea encendi ndola y apag ndola Limpie bien la placa del interruptor de pared para quitar el polvo y aceite Pegue la etiqueta en la superficie de la placa del...

Page 6: ...kit s supplied by the manufacturer shall be used in the installation of this appliance Draft relief openings must not be covered or blocked These appliances must not be connected to a chimney or flue...

Page 7: ...These appliances must be isolated from the gas supply piping system by closing their individual manual shut off valve during any pressure testing of the gas supply piping system at test pressures equ...

Page 8: ...the left magnet catch and allow the panel to swing down to open On millivolt systems the piezo igniter HI LO flame adjustment knob and pilot and main gas OFF ON control knob are located below the gla...

Page 9: ...s Tolightelectronicappliancesrefertothedetailed lighting instructions found on Pages 26 and 27 of these instructions Electronic appliance lighting instructions may also be found on the pull out lighti...

Page 10: ...nthebottom control access panel reach into control com partment and pull the combustion air control lever all the way out The outside air shutter should be fully open when the fireplace is in use and...

Page 11: ...ng on the circumstances present The following cleaning solutions are approved for use to clean glass Non ammonia based household cleaner 50 50 mix of white vinegar and water Gas fireplace stove glass...

Page 12: ...n this door or replace cracked or broken glass Handlethisglasswithextreme care Glass is susceptible to damage Do not scratch or handleroughlywhilereinstall ing the glass door frame The glass door s of...

Page 13: ...panel and over the indents on the firebox floor Glowing Embers Vermiculite Decorative Volcanic Stone And Log Placement Instructions Step 1 Separate the Glowing Embers Rockwool into pieces about the si...

Page 14: ...then the smaller left and right top logs All logs that have notches to fit over the grate tines should be positioned with these notches directly against the grate All top logs that rest on lower logs...

Page 15: ...then the smaller left and right top logs All logs that have notches to fit over the grate tines should be positioned with these notches directly against the grate All top logs that rest on lower logs...

Page 16: ...logs that have notches to fit over the grate tines should be positioned with these notches directly against the grate All top logs that rest on lower logs do so over flattened mounting faces in the b...

Page 17: ...ge flame with an orange body that does 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...

Page 18: ...ppearance Burner Adjustments Note The air shutter for the burner primary air opening is factory set Do not adjust the factory set position The factory set position is shown in Figure 16 Figure 16 Burn...

Page 19: ...sesonly Thisinformationisalsoprovided onschematicsattacheddirectlytotheappliance on a pullout panel located within the control compartment CAUTION Label all wires prior to disconnection when servicing...

Page 20: ...y with variable speed wall or unit mountable switch also provides variable speed forced air circulation Bag of Glowing Embers Bag of Volcanic Stone Replacement ember materials or volcanic stone are av...

Page 21: ...the appliance at the glass enclosure panel s top and bottom edges 2 Piece Door Frame Kits Polished Brass Brushed Stainless Models Where Used Cat Model Cat Model 98L18 2DFK33PB 98L19 2DFK33BS MPB 3328...

Page 22: ...Black MPB4540 H0971 SPD45TI 45 Sq Pane Doors Textured Iron H0972 SPD45SP 45 Sq Pane Doors Satin Pewter H0973 SPD45AB 45 Sq Pane Doors Antique Brass SQUARE DESIGN SCREEN DOOR KITS Cat No Model Descrip...

Page 23: ...RESCENTS H3553 CLGK40C 40 Black H3561 CLGK45C 45 Black H3547 CLGK35SP 35 Satin Pewter H3555 CLGK40SP 40 Satin Pewter H3563 CLGK45SP 45 Satin Pewter Sunrise Style upper grille shown Crescent Style lowe...

Page 24: ...a fire or an explosion D Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control syst...

Page 25: ...ANNE GAZ MILLIVOLT SIT SIT MILLIVOLT PILOT H I L O W H T P T H T P T P I L O T P I L O T O N t i OFF OUT IN PIEZO ELECTRIQUE REMARQUE LES SCH MAS ET LES ILLUSTRATIONS NE SONT PAS L CHELLE INSTRUCTIONS...

Page 26: ...an to inspect the appliance and to replace any part of the control system and any gas control which has been under water OPERATING Instructions Electronic 1 For complete shut down turn remote wall swi...

Page 27: ...e commande qui ont t plong s dans l eau 1 ARR TEZ Lisez les instructions de s curit sur la portion sup rieure gauche de cette tiquette 2 Tournez l interrupteur mural la position d arr t OFF 3 Ouvrez l...

Page 28: ...in this manual Replace Glowing Embers Homeowner Qualified Service Technician Remove old ember materials rockwool and vacuum the ember placement area Place new embers as described on Pages 12 through...

Page 29: ...y is not indicated switch is defective and must be replaced B Wall switch or wires defective Checkwallswitchandwiresforproperconnections Jumper wire across terminals at wall switch if burner comes on...

Page 30: ...een24Vhotand 24V common leads to valve control Mustmeasureatleast19 5VACwith igniter powered see insert A To identifyproperlead thischeckmust be done with the valve control con nected and igniter powe...

Page 31: ...x Nameplate Logo 12L15 is not included Gas Controls SIT Millivolt Item Description Natural Gas Propane Gas Part No Qty Part No Qty 20 Gas Valve SIT 43K07 1 88J53 1 21 Piezo Igniter w wire 91K94 1 91K9...

Page 32: ...ors styles and products Consult your local distributor for fireplace code information 1508 Elm Hill Pike Suite 108 Nashville TN 37210 Replacement Parts 4 7 1 2 5 40 13 12 42 3 8 9 40 45 14 15 9 33 35...

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