Monessen Hearth DFX DBX24C Page 20 Installation And Operating Instructions Manual Download | Manualshive

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33D4047

DFX & DBX Series Vent Free Fireplaces

FP2501
manual pilot flame

FP2273
pilot bad flame

FP2272
pilot correct flame

FLAME APPEARANCE

Flames from the pilot, front and rear burner should be visually checked as soon as the
heater is installed.

In addition, periodically check the flames visually during operation.

CHECk THE PILOT FLAME

The pilot flame must always be present when the heater is in operation.

It should just

touch the top of the thermocouple tip for natural.

Refer to Figures 23 & 24

for correct pilot

flame.
If the pilot flame does not touch the thermocouple, then the main burner cannot function
reliably.

Refer to Figures 23 & 24

for incorrect shape of pilot flame.

Figure 23 -
Millivolt Control Pilot Flame Appearance

Thermocouple
for Natural Gas

Thermocouple
for LP

FP7

Thermocouple
for Natural Gas

Thermocouple
for LP

FP73

MILLIVOLT CONTROL

Correct Pilot Flame Appearance

Incorrect Pilot Flame Appearance

MANUAL & HI/LO CONTROL

Thermocouple
for Natural Gas

Thermocouple
for LP

Thermocouple
for Natural Gas

Thermocouple
for LP

FP50

Correct Pilot Flame Appearance

Incorrect Pilot Flame Appearance

Figure 24 -
Manual & Hi/Lo Control Pilot Flame Appearance

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19
20
21
22
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Summary of Contents for DFX DBX24C

Page 1: ...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 Installation and service must be performed by a qualified installer service agency or the gas supplier WARNINGS This is an unvented gas fired heater It uses air oxyge...

Page 2: ...Appearance 21 Operating Instructions 21 For Your Safety Read Before Lighting 22 Manual Control Lighting Instructions 23 Thermostatic Control Lighting Instructions 24 MilliVolt Control Lighting Instructions 25 Match Lighting Instructions 26 Maintenance 26 Cleaning and Servicing 26 Troubleshooting 27 Replacement Parts 28 Firebox 28 DFX24C Millivolt Manual Control Burner 29 DFX32C Millivolt Burner 30...

Page 3: ...ters in a bathroom or bedroom 12 Correct installation of the ceramic fiber logs proper location of the heater and annual cleaning are neces sary to avoid potential problems with sooting Sooting resulting from improper installation or operation can settle on surfaces outside the fireplace Refer to log placement instructions for proper installation 13 Avoid any drafts that alter burner flame pattern...

Page 4: ...alified service technician to inspect the room heater and to replace any part of the control system and any gas control which has been under water 24 Never burn solid fuels in a fireplace where a unvented room heater is installed 25 Always have a fireplace screen in place when the appliance is in operation and unless other provisions for combustion air are provided the screen must have an opening ...

Page 5: ...llivolt 26 000 20 000 DBX24NTC Nat T Stat 10 000 DBX24PTC LP T Stat 10 000 Gas Specifications NOTE For LP models an external regulator is required to reduce supply pressure to a maximum of 13 w c ignition controls Piezo ignitor 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 posi...

Page 6: ...A 24Z x 622 mm 32 813 mm B 22Z x 572 mm 28C v 730 mm C 26Z x 673 mm 30 762 mm D 14 356 mm 21C v 553 mm E 17 432 mm 20Z v 514 mm F 4B 118 mm 4C v 121 mm G 4M 124 mm 5 127 mm H 11M 302 mm 13C 340 mm I 1 25 mm 1B 41 mm J 10Z x 267 mm 12 305 mm K 9 229 mm 10B 270 mm L 13Z 333 mm 17Z x 445 mm M 21 533 mm 27 686 mm Framing Dimensions N 26C v 680 mm 30Z v 768 mm O 24C v 629 mm 32Z x 826 mm P 10Z x 267 mm...

Page 7: ...ogs to prevent skin irritation from loose fibers Logs are fragile handle with care In planning the installation for the fireplace it is necessary to determine where the unit is to be installed and whether optional accessories are desired Gas supply piping should also be planned The following steps represent the normal sequence of installation Each installation is unique how ever and might require ...

Page 8: ...eted or sealed b weather striping has been added on openable windows and doors and c caulking or sealants are applied to areas such as joints around window and door frames between sole plates and floors between wall ceiling joints between wall panels at pen etrations for plumbing electrical and gas lines and at other openings The following formula can be used to determine the maximum heater rating...

Page 9: ...aces air conditioners windows or doors Installation must provide adequate ventilation and combustion air DO NOT INSTALL THIS MODEL IN A BEDROOM OR BATHROOM Location should be out of high traffic areas and away from furniture and draperies due to heat from firebox Never obstruct the front opening of the unvented fireplace or restrict the flow of combustion and ventilation air Minimize modifications...

Page 10: ...ate height Do not place fireplace on carpeting vinyl tile or other soft floor coverings It may however be placed on flat wood plywood particle board or other hard surfaces Be sure fireplace rests on a solid continuous floor or platform with appropriate framing for support and so that no cold air can enter from under the firebox Mantel clearances The canopy supplied with the unit must be installed ...

Page 11: ...irebox Anchor fireplace to the side framing members using nail ing flanges K J FP2445 opening size Ref DFX24C DBX24C DFX32C J 26C v 26C v 31Z v 680 mm 680 mm 800 mm K 25 25 32ZC zn 635 mm 635 mm 833 mm FP2445 Figure 7 Custom Cabinet When finishing a custom cabinet mantel or other built in enclosure the opening size to accommodate the fireplace with trim installed is as follows WARNING The fireplac...

Page 12: ...containing the four log set 3 To remove the grate and base assembly take out two 2 screws as shown in Figure 9 4 Lift grate and base assembly out of the firebox 5 Secure the firebox with two anchoring screws 3 16 x 1Z v length supplied with the fireplace system Figure 10 Note If the unit is mounted on carpeting tile or combustible material without the hearth a metal or wooden base covering the ent...

Page 13: ...10 A sediment trap should be installed upstream to prevent moisture and contaminants from passing through the pipe to appliance controls and burners Failure to do so could prevent the appliance from operating reliable Figure 11 FP2447 gas connection 3 Min To Fireplace Pipe Coupling Stainless Flexible Tube Pipe Locations Pressure Tapping Point Installation Manual Shutoff Valve Gas Supply Inlet FP24...

Page 14: ...bing to pressure gauge After taking pressure reading reinstall test plug Check for gas leaks FP2499 manual valve NPT Test Plug FP2499 Figure 12 Pressure Test Point Location Manual Control FP2510 thermostat control Test Points FP2510 Figure 13 Alternate Test Point Location for Thermostat control Units Thermostat Control Figure 13 Turn captured screw counter clockwise two or three turns and then pla...

Page 15: ...ot Spade Terminal FP2112 WARNING Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing Connecting Optional Wall Switch 1 Use 18 awg two wire cable 15 feet maximum length 2 At one end of the cable connect both wires to the wall switch or thermostat At the other end connect one wire to TP TH and...

Page 16: ...components may be checked with a millivolt meter having a 0 1000 mV range Conduct each check shown in chart below by connection meter test leads to terminals as indicated A Complete MilliVolt System Check A Reading Thermostat contacts CLOSED Control Knob ON Main burner should turn ON a If the reading is more than 100 millivolts and the automatic valve still does not come on replace the control b I...

Page 17: ... and to install canopy FP2513 remove screen Fireplace Screen Louvre FP2513 Figure 17 Remove Fireplace Screen Panel Canopy INSTALL CANOPY 1 Push louvers up and out to remove top louver assem bly 2 Align the black canopy with the holes in the top frame assembly Figure 18 3 Install the three 3 screws in owner s manual packag ing which attach the canopy to the top frame assembly Figure 18 4 Tighten al...

Page 18: ...W rock wool 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 CAUTION 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 o...

Page 19: ...n left front log Pins LG700 32VFSC logs Pins Left Front Log 2 Left Middle Log 5 Right Front Log 1 Right Middle Log 4 Rear Log 3 Pins Pins LG700 Figure 20 DFX32C Log Placement LG701 24BDXC logs One piece Log Burner Pin Burner Pin LG701 Figure 21 24BDXC Log Placement PlacE rock wool DFX24C and DFX32C models After installing logs pull apart dime size pieces of rock wool Sprinkle rock wool evenly over...

Page 20: ... Figures 23 24 for correct pilot flame If the pilot flame does not touch the thermocouple then the main burner cannot function reliably Refer to Figures 23 24 for incorrect shape of pilot flame Figure 23 Millivolt Control Pilot Flame Appearance Thermocouple for Natural Gas Thermocouple for LP FP2272 Thermocouple for Natural Gas Thermocouple for LP FP2273 Millivolt Control Correct Pilot Flame Appea...

Page 21: ...STRUCTIONS Avoid any drafts that alter burner flame patterns Do not allow fans to blow directly 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 fabricating and shipping various components of this appliance are treated with certain oils films or bonding...

Page 22: ... instruc tions 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 try to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion D Do not use this appliance if any part of it has been under water Immediately ca...

Page 23: ... in push and release the piezo ignitor button to light the ODS pilot The pilot is located on the left side of the heater behind the middle log and in front of the back log If piezo ignitor does not light the pilot refer to Match Lighting Instructions Page 26 8 Hold the control knob in for an additional 10 seconds to prevent the ODS pilot from shutting off the gas while the thermocouple is warming ...

Page 24: ...r If piezo ignitor does not light the pilot see Match Lighting Instructions Page 26 8 Hold the control knob in for an additional 10 seconds to prevent the ODS pilot from shutting off the gas while the thermocouple is warming up 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 a...

Page 25: ...essary to press in the control knob for 30 seconds to allow air to bleed out of the gas piping 7 With the control knob pushed in push in and release the piezo ignitor button to light the pilot 8 Continue pushing the control knob in for a further 60 seconds to prevent the flame detector from shut ting off the gas while the probe is warming up Release the control knob 9 Turn gas control knob counter...

Page 26: ...allation of screen DO NOT OPERATE THE UNIT WITH THE SCREEN REMOVED Remove logs handling carefully by holding gently at each end Gloves are recommended to prevent skin irritation from ceramic fibers If skin becomes irritated wash gently with soap and water See manual for correct log placement Periodic Cleaning Refer to the parts diagram for location of items discussed below Do not use cleaning flui...

Page 27: ...amaged 3 Gas regulator defective 1 Vapors from paint or curing process of logs 2 Vapors or smoke continue after heater has run with damper or window open for several hours 1 Turning control knob to HIGH position when burner is cold 2 Air in gas line 3 Dirty or partially clogged burner orifices 1 LP regulator shut down due to inlet pres sure too high REMEDY 1 Press in control knob fully 2 After ODS...

Page 28: ... 33D4501 33D4501 33D5501 3 Left Firebrick Optional 1 26D7061 26D7061 26D7065 4 Center Firebirck Optional 1 26D7060 26D7060 26D7064 5 Right Firebrick Optional 1 26D7062 26D7062 26D7066 6 Blower Optional 1 BLO24T BLO24TB BLOT WARNING Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or ...

Page 29: ...6 1 11V0313 11V0313 11V0313 11V0313 9 Regulator Valve Tube 5 16 1 33D4512 33D4512 10 ODS Pilot Valve Tube 3 16 1 49D0050 49D0050 49D0050 49D0050 11 Piezo Ignitor 1 14D0503 14D0503 14D0503 14D0503 12 Peizo Wire 1 00K0632 00K0632 00K0632 00K0632 13 ODS Pilot Assy 1 14D0473 14D0477 26D2529 14D0476 14 Left Log 1 1 33D4040 33D4040 33D4040 33D4040 15 Right Log 2 1 33D4041 33D4041 33D4041 33D4041 16 Rear...

Page 30: ... 11V0313 9 ODS Pilot Valve Tube 3 16 1 49D0050 49D0050 10 Peizo Ignitor 1 14D0503 14D0503 11 Piezo Wire 1 00K0632 00K0632 12 Right Front Log 1 1 33D5042 33D5042 13 Left Front Log 2 1 33D5043 33D5043 14 Rear Log 3 1 33D5044 33D5044 15 Right Middle Log 4 1 33D5045 33D5045 16 Left Middle Log 5 1 33D5046 33D5046 17 Tube Nut 5 16 not shown 1 00K0917 00K0917 18 Tube Ferrule 5 16 not shown 1 00K0918 00K0...

Page 31: ...at Control Valve 1 11V0701 11V0701 6 Pressure Valve Regulator 1 24D0305 24D0306 7 Peizo Wire 1 00K0632 00K0632 8 Burner Valve Tube 1 4 1 33D4053 33D4053 9 Piezo Ignitor 1 18D0402 18D0402 10 Front Log 1 1 33D0066 33D0066 11 Tube Nut 1 4 not shown 1 00F0079 00F0079 12 Tube Ferrule 1 4 not shown 1 00F0080 00F0080 13 NPT Tube Fitting 3 8 x 1 2 not shown 1 18D0310 18D0310 14 Flex Tube w Fittings not sh...

Page 32: ...rebox installation The blower must be installed prior to the installation of the unvented heater The electrical connections must be made before the firebox is framed and enclosed in the finished walls Brass Louvers Optional brass louvers may be installed in place of the factory installed black louvers See installa tion instructions provided with the brass louvers Firebricks Optional firebrick kits...

Page 33: ... the retainer clip with the hole inside the firebox Using Phillips screwdriver attach the retainer bracket to inside of firebox Figure 37 6 Repeat step five for the other firebrick side panel FP2520 install back brick Rear Firebrick Panel Bracket Tabs FP2520 Figure 36 Install Back Firebrick Panel FP2521 install side brick Hole Retainer Clip Side Firebrick Panel Screw FP2521 Figure 37 Install Side ...

Page 34: ...other side trim 6 Slide assembled trim over the top and down the sides of the fireplace Flush trim with front of fireplace as shown in Figure 42 7 Align holes in assembled trim with holes in side of fire place Using a Phillips screwdriver attach trim with four 4 screws provided two for each side of fireplace Tighten snuggly Figure 43 Black trim installation DFX32C 1 Remove trim from protective pac...

Page 35: ...eplaces OPTIONAL ACCESSORIES FP2527 install trim Assembled Trim Trim Flush with Front of Fireplace FP2527 Figure 42 Slide Assembled Trim Over Top of Heater FP2528 secure trim Screws Holes Screw Screw FP2528 Figure 43 Secure Trim to Fireplace ...

Page 36: ...lso be void if the appliance is not operated and maintained according to the operating instructions supplied with the appliance and does not extend to 1 firebox burner assembly damage by accident neglect misuse abuse altera tion negligence of others including the installation thereof by unqualified installers 2 the costs of removal reinstallation or transportation of defective parts on the applian...

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