Monessen Hearth DLX18 Installation And Operating Instructions Manual Download Page 23

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14D9999                                                                                                                                                                                                    

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Top Locating 

Pins 

W

ARNING

CAUTION

LOG PLACEMENT

Before you begin 

— This unit is supplied with a set of ceramic fiber logs. Do not handle these logs with your bare hands. 

Always wear gloves to prevent skin irritation from ceramic fibers.

 After handling logs, wash your hands gently with soap 

and water to remove any traces of fibers.

PROPER SEQUENCE OFLOG 
INSTALLATION - 

See Figure 21

1.   Install the

 Rear Log (#1)

 on the top 

set of locating pins. Visually check to 
verify the log is securely placed on the 
pins, and in contact with the grate.

2.   Install the 

Right Longer Front Log 

(#2)

 on top of the piezo and control 

cover.  Center  the  log  left  to  right  to 
properly engage the locator lugs. 

3.   Place the 

Left Shorter Front Log (#3)

 

in  front  of  the 

Right  Longer  Front 

Log (#2)

3.   Install the 

Center Log (#4)

 behind the 

Right Longer Front Log (#2)

 on the 

remaining set of locating pins. Visu-
ally check to verify the log is securely 
placed on the pins.

4.   Install the

 Cross Log (#5)

 by engaging 

the holes in the cross log onto pins on 
the rear log.

PLACING THE DECORATIVE ROCK 

Figure 21 - Proper Sequence of Log Installation 

Rear Log 

#1

The positioning of the logs is critical to the safe and clean operation of this heater. 
Sooting and other problems may result if the logs are not properly and firmly positioned 
in  the  appliance.  Never  add  additional  logs  or  embellishments  such  as  pine  cones, 
vermiculite or rock wool to the heater. Only use the logs supplied with the unit. 
Failure  to  position  the  parts  in  accordance  with  diagrams  below  or  to  use  only 
parts  specifically  approved  for  this  heater  may  result  in  property  damage  or 
personal injury.

W

ARNING

DO NOT sprinkle volcanic rock on the logs or around the pilot or the main burner. This 
may cause sooting. Only place volcanic rock on the floor of the fireplace.
During initial operation of the new heater, burning logs will give off a paper burning 
smell and orange flames will be present. Simply open the windows for a few hours to 
vent the odor. 

CAUTION

Left 

Shorter 

Front Log 

#3

Right 

Longer 

Front Log 

#2

Center Log 

#4

Cross Log 

#5

Locating 

Pins 

Summary of Contents for DLX18

Page 1: ...any electrical switch do not use any phone in your building Immediatelycallyourgassupplierfromaneighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the f...

Page 2: ...replace Preparation 17 Installing Vented Applications 18 Connecting the Gas 19 Checking Gas Pressure 20 Electrical Wiring Milli volt 21 Log Placement 23 Flame Appearance 24 Checking the Burner Flame 2...

Page 3: ...rence IMPORTANT Read these instructions carefully before installing or trying to operate this vent free gas heater IMPORTANT SAFETY INFORMATION 1 Due to high temperatures the heater should be located...

Page 4: ...test pressures in excess of 1 2 psig 3 5 kPa 21 The appliance must be isolated from the gas supply piping system by closing its equipment shutoff valve during any pressure testing of the gas supply pi...

Page 5: ...r shipping damage If any parts are missing or damaged immediately inform the dealer from whom you purchased the appliance Do not attempt to install any part of the appliance unless you have all parts...

Page 6: ...tor allows ignition of the pilot without the use of matches or batteries Manual control has four 4 positions OFF All gas to the gas logs is shut off at the valve IGN Valve position to light maintain a...

Page 7: ...ot be installed in a confined space or unusually tight construction unless provisions are provided for ade quate combustion and ventilation air The National Fuel Gas Code ANSI Z223 1 NFPA54 defines a...

Page 8: ...tion would be based only on the room with the heater BTU HR 151 2 x 12 x 8 x 1000 50 GENERAL INSTALLATION INFORMATION Figure 1 Example of a Large Room with 1 2 Wall Divider Counter Fireplace x 1000 x...

Page 9: ...I Z21 91 typically referred to as a Universal Firebox as long as firebox hearth dimen sions meet the minimum hearth dimensions shown below Figure 2 Minimum Hearth Dimensions This appliance is for inst...

Page 10: ...the base or bottom surface of the unit See Table The log set should be placed against or as near as possible to the rear wall of the fireplace firebox Depth of fireplace firebox SeeTable Figure 3 Refe...

Page 11: ...in Figures 4 through 12 and defined in the fireplace manufacturer s instructions are minimum clearances to maintain when installing this heater Left and right clearances are determined when facing the...

Page 12: ...ese minimum clearances you must operate the heater with chimney flue damper open See Installing Vented Applications found on page 17 Figure 5 Measuring Heat Resistant Material HEAT RESISTANT REQUIREME...

Page 13: ...igure 9 page 15 Less than 8 Extend heat resistant material to at least Extend heat resistant material to at least 8 install hood and observe profiles shown 8 install hood and observe profiles shown in...

Page 14: ...opening CLEARANCES AND HEIGHT REQUIRMENTS Figure 7 Minimum Mantel Clearance with No Hood DLX18 Figure 8 Minimum Mantel Clearance with Hood All Models Example The bottom of the mantel may project from...

Page 15: ...ning exceeding the maximum acceptable distance of 6 If your mantel profile is unsafe you may either Raise the mantel to an acceptable height OR Remove the mantel CLEARANCES AND HEIGHT REQUIREMENTS Fig...

Page 16: ...Figure 11 OR The gas log heater may be installed nearer to the floor if a minimum of 14 of noncombustible material such as slate or marble is installed between the base of the fireplace and the combus...

Page 17: ...e this cleaning performed annually after installation Seal any fresh air vents or ash clean out doors located on floor or wall of fireplace If not drafting may cause pilot outage or sooting Use a heat...

Page 18: ...s logs function as a system If the fireplace is spilling into the room check with a match or a smoke stick reposition the damper clamp until a positive draft is obtained by opening the damper If negat...

Page 19: ...that the Pressure Tapping Point May Be Installed Use new black iron or steel pipe Internally tinned copper or copper tubing can be used per National Fuel Code section 2 6 3 providing gas meets hydrog...

Page 20: ...point Use test point closest to control knob After tak ing pressure reading be sure and turn captured screw clockwise firmly to reseal Do not over torque Check for gas leaks MILLIVOLT CONTROL Figure...

Page 21: ...trol THAT DOES NOT USE 110 VAC TO OPERATE CONNECTING OPTIONAL WALL SWITCH OR THERMOSTAT 1 Use 18 awg two wire cable 15 feet maximum length 2 At one end of the cable connect both wires to the wall swit...

Page 22: ...S READING TERMINALS SHOULD BE A COMPLETE 2 3 CLOSED CLOSED SYSTEM B THERMOPILE 1 2 OPEN OPEN OUTPUT CONNECTING REMOTE RECEIVER 1 Plug in the remote connector to the remote receiver wire 2 Connect the...

Page 23: ...stall the Cross Log 5 by engaging the holes in the cross log onto pins on the rear log PLACING THE DECORATIVE ROCK Figure 21 Proper Sequence of Log Installation Rear Log 1 The positioning of the logs...

Page 24: ...main burner cannot function reliably See Figure 23 and 25 for incorrect shape of pilot flame MILLI VOLT CONTROL NOTE For illustration purposes natural gas and propane components are combined Figure 2...

Page 25: ...ctly into the fireplace Do not place a blower inside the burn area of the firebox Ceiling fans may create drafts that alter flame patterns Sooting and improper burning will result During manufacturing...

Page 26: ...ructions If you cannot reach your gas supplier call the fire department 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 don t...

Page 27: ...ut of the gas piping 7 With the control knob pushed in push and release the piezo ignitor button to light the ODS pilot The pilot is located on the right side of the heater behind the front log and in...

Page 28: ...9 Release the control knob If the knob does not pop out when released stop and immediately call your service technician or gas supplier If the ODS pilot will not stay lit after several tries push and...

Page 29: ...ase the piezo ignitor button to light the pilot 8 Continue pushing the control knob in for an additional 60 seconds to prevent the flame detector from shutting off the gas while the probe is warming u...

Page 30: ...d previously Instead of pushing and releasing the piezo button light a match and hold the flame to the end of the pilot and ignite the pilot 3 After control knob has been released and pilot stays lit...

Page 31: ...e particles and dust from the front and rear burner control and piezo covers and grate weldment Inspect and clean rear burner air intake holes Remove lint or particles with vacuum brush or pipe cleane...

Page 32: ...REPLACEMENT PARTS LIST Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this heater may result in property damage or personal inj...

Page 33: ...00K0632 00K0632 10 Knob Control 1 18D0602 18D0602 18D0602 18D0602 Milli volt Control 4 Control Valve 1 14D0467 14D0468 14D0467 14D0468 5 Regulator Valve N A N A N A N A 6 Main Injector 1 14D0588 00K0...

Page 34: ...itor 2 Replace ignitor 3 Reconnect ignitor cable 4 Free ignitor cable if pinched by any metal or tubing 5 Replace ignitor cable 6 Replace piezo ignitor 1 Ventilate room Stop using odor causing product...

Page 35: ...ally clogged burners orifice 1 LP regulator shut down due to inlet pressure too high REMEDY 1 Press in control knob fully 2 After ODS pilot lights keep control knob pressed in for 30 seconds 3 Fully o...

Page 36: ...r in accordance with the installation instructions The Limited Lifetime Warranty will also be void if the appliance is not operated and maintained according to the operating instructions supplied with...

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