Monessen Hearth DIS33G manual

This is an unvented gas- fi red heater . It uses air (oxygen) from the room in which it is installed. Provisions for adequate combustion and ventilation air must be provided. See page 9. READ AND SA VE THESE INSTRUCTIONS W ARNINGS If the information in this manual is not followed exactly , a fire or explosion may result causing property damage, pe[...]

2 23D8020 CONTENTS Important Safety Information ..................................3 Product Features ......................................................5 Operation ..............................................................5 Natural Gas ..........................................................6 Propane/LPG ...................................[...]

23D8020 3 9. The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.l/NFPA54. 10. This unit complies with ANSI Z21.11. Unvented Heat- ers. 11. Do not install the heaters in a bathroom or bedroom. 12. C orrect installation of the ceramic fiber logs, proper location of the heater, [...]

4 23D8020 IMPORT ANT SAFETY INFORMA TION Continued from page 3 16. Keep room area clear and free from combustible materi- als, gasoline and other flammable vapors and liquids. 17. Unvented gas heaters are a supplemental zone heater. They are not intended to be the primary heating appliance. 18. Unvented gas heaters emit moisture into the living are[...]

23D8020 5 Your vent-free fireplace must be mounted to the floor or the fireplace hearth. OPERA TION This unvented gas heater requires no outside venting and burns cleanly with high heating efficiency. Piezo Ignitor Fireplace Screen Control Knobs PRODUCT FEA TURES Optional Face Plate Figure 1 - Unvented Gas Heater with Control Access Door Open On/Of[...]

6 23D8020 NA TURAL GAS Milli-Volt and T-Stat Pressure Regulator Pressure Setting: 3.5" w.c. Pilot Regulator: 3.5" w.c. Gas Inlet Pressure: Max. 10 1/2" w. c. Min. 5" w.c. PRODUCT FEA TURES AND SPECIFICA TIONS PROP ANE/LPG Note: An external regulator is required to reduce supply pressure to a maximum of 13" w.c. Milli-Volt a[...]

23D8020 7 GETTING ST ARTED MAKE SURE YOU HA VE RECEIVED ALL P ARTS Check your packing list to verify that all listed parts have been received. You should have the following: • Installation/Operating instructions • Black Louvers (5) • 33" unvented gas heater with brick panels. • Canopy • Volcanic rock and rock wool • Two (2) anchori[...]

8 23D8020 REMOVING SCREEN Remove fireplace screen by pushing screen frame panel up and out. See Figure 2. Figure 2 - Removing Fireplace Screen GENERAL INST ALLA TION INFORMA TION INST ALLING CANOPY 1. Remove the fireplace screen as described in the previous section. 2. Align canopy with the holes in the top frame assembly. See Figure 3. 3. Install [...]

23D8020 9 GENERAL INST ALLA TION INFORMA TION CODES Adhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS CODE ANSI Z223.1 or NFPA54 which can be obtained from… American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 or National Fire Protection Association, Inc. Batterymarch Park Quincy, [...]

10 23D8020 W H BTU/Hr = BTU/Hr = BTU/Hr = W ARNING The following formula can be used to determine the maximum heater rating per the definition of unconfined space: (L 1 + L 2 ) Ft x (W) Ft x (H) Ft 50 Consider two connecting rooms with an open area between, with the following dimensions: L 1 = 15 1 / 2 Ft., L 2 = 12 Ft., W = 12 Ft., H = 8 Ft. (15 1[...]

23D8020 11 33" 15 1 / 4 " 22 3 / 4 " 23 7 / 8 " B A 9" Minimum 9" Minimum 42" Minimum CLEARANCES AND HEIGHT REQUIREMENTS NOTE: Clearances are necessary to combustible surfaces only . No clearance is necessary for noncombustible surface. Sidewall clearances: The clearance from the inside of the appliance to any com[...]

12 23D8020 10" 12" 14" 26" 8" 12" 10" 8" 6" 2 1 / 2 " Hood No combustible materials within 8” of opening. Do not cover louv ers. No combustible materials within 8" of opening. Do not cover louvers. Hood 8" 4" 2 1 / 2 " 6" 8" HEA T RESIST ANT MA TERIAL (MINIMUM REQUIRE[...]

23D8020 13 Combustible Material Non-combustible Material 5" 1” CLEARANCES and HEIGHT REQUIREMENTS The gas log heater must be installed at least 5" above any combustible flooring material, such as carpeting or tile, which is closer than 14" to the base of the fireplace. See Figure 10. Figure 10 - Minimum Clearance above Combustible [...]

14 23D8020 22 5 / 8 " 33 1 / 2 " 16 " 33 1 / 2 " 16 " 33 1 / 2 " 27 1 / 2 " 22 5 / 8 " 31 7 / 8 " REF 16 " 37 1 / 4 " 45 3 / 4 " 15 3 / 8 " 33 1 / 2 " 64 1 / 4 " FIREPLACE FRAMING If unit is to be “built in,” fireplace framing can be built before or after the appliance i[...]

23D8020 15 NOTE: Clearance requirements as detailed in “Clearances and Height Requirements” section of this manual must be met before securing heater in place. To prevent movement, the heater must be secured to the floor or hearth. 1. Lift off louvers and remove the screen. 2. Remove log set. 3. To remove the grate and base assembly, take out t[...]

16 23D8020 NOTICE: A quali fi ed gas appliance installer must connect the heater to the gas supply . Consult all local codes. IMPORT ANT : Loosen the pipe adapter on the fl ex tube before installing to the system piping. Figure 17 - Gas Connection T o Heater V alve Stainless Flexible T ube CONNECTING THE GAS Use new black or steel pipe. Internall[...]

23D8020 17 To reach factory installed flex line, go through access door on right or left side of firebox. CONNECTING THE GAS CHECK GAS TYPE: The gas supply must be the same as stated on heater's rating plate. Located behind the control access door (Figure 1, page 5). If the gas supply is different, DO NOT INST ALL the heater . Contact your dea[...]

18 23D8020 CHECKING GAS PRESSURE Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water solution after com- pleting connection. DO NOT USE AN OPEN FLAME. Check the gas pressure with the appliance burning and the control set to HIGH . Open control access door on either side of unit to find valve a[...]

23D8020 19 ELECTRICAL WIRING (MILLI-VOL T) The milli-volt valve is a self-powered combination gas control THA T DOES NOT REQUIRE 1 10 V AC TO OPERA TE. Figure 20 - Wiring Diagram Optional W all Switch or Remote Receiver Switch On/Off Switch On/Off Switch W all Switch ODS Pilot Millivolt V alve TH = 3 TP = 1 TP/TH = 2 ODS Pilot Spade T erminal Label[...]

20 23D8020 ELECTRICAL WIRING (MILLI-VOL T) A. COMPLETE MILLIVOL T SYSTEM CHECK (“A” Reading - Thermostat contacts CLOSED - Control Knob “ON” - Main burner should turn ON) a. If the reading is more than 100 milli-volts and the automatic valve still does not come on, replace the control. b. If the closed circuit reading (“A” reading) is l[...]

23D8020 21 ELECTRICAL WIRING (F AN) If any of the original wire as supplied with the fireplace must be replaced, contact dealer for proper replacement wiring har- ness. (see parts list for part number) . 120 volts, 60Hz, 1 amps. Electrical power cord (plug) can be routed to exit the DIS33 on either the left side or the right side. Remove cord prote[...]

22 23D8020 LOG PLACEMENT Figure 23 - Installing Rear Log (#1) Before you begin — This unit is supplied with six (6) ceramic fiber logs. Do not handle these logs with your bare hands. Always wear gloves to prevent skin irritation from ceramic fibers. After handling the logs, wash your hands gently with soap and water to remove any traces of fibers[...]

23D8020 23 LOG PLACEMENT Figure 25 - Installing Left Base Log (#3) Left Base Log (#3) Pins Figure 26 - Installing Right Front Log (#4) Right Front Log (#4) Right Front Log (#4) Pins 4. Place right front log (#4) on two pins on bottom right side of grate. See Figure 26. 3. Place left base log (#3) on two pins on left side of grate. See Figure 25.[...]

24 23D8020 LOG PLACEMENT Figure 27 - Installing Left T op Log (#5) Left T op Log (#5) 5. Place right end of left top log (#5) on bottom center grate pin. Place left end of left top log (#5) on top of the left base log. See Figure 27. Bottom Center Pin Pin[...]

23D8020 25 LOG PLACEMENT 6. Place right top log (#6) on two pins to the left of right base log. See Figure 29. PLACING ROCK WOOL After installing logs, place TPB-RW (Rock Wool) in dime-size pieces evenly across the burner surface in between the logs. Do not add additional rock wool. See Figure 30 for the ap- proximate area to place rock wool. Wash [...]

26 23D8020 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. CHECKING THE PILOT FLAME The pilot fl ame must always be present when the heater is in operation. It should just touch the top of the ther- moc[...]

23D8020 27 In normal operation at full rate after 15 minutes, the following flame appearances should be observed: Figure 33 - Correct Appearance of Rear Flames Burner will have a random pattern of yellow flames as shown in Figure 33. There should be glowing embers on the front burner. Note: The front fl ames and embers will be an opaque orange col[...]

28 23D8020 W ARNING Figure 34 - Location of Piezo Ignitor , Control Knobs and Switch on Milli-V olt Unit, Hi/Lo Remote Control and Manual Unit A. This appliance is equipped with a piezo ignition device which automatically lights the pilot. If the piezo is not working properly see Match Lighting Instructions on page 30. B. BEFORE OPERATING smell all[...]

23D8020 29 OPERA TING INSTRUCTIONS 1. STOP! Read the safety information label. 2. Make sure the manual shutoff valve is fully open. 3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo ignitor does not light the pilot, refer to instructions for “Match Lighting Instructions,” page 30. 4. [...]

30 23D8020 1. Remove any items necessary for easy access to the pilot (for example: logs, screens, etc.). 2. Follow appropriate lighting instructions found 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 st[...]

23D8020 31 Annual inspection and cleaning by your dealer or qualified service technician is recommended to prevent malfunction and/or sooting. PERIODIC CLEANING - Refer to parts diagram for location of items discussed below . • Do not use cleaning fluid to clean logs or any part of heater. • Brush logs with soft bristle brush or vacuum with bru[...]

32 23D8020 OBSERVED PROBLEM When ignitor button is pressed, there is no spark at ODS/pilot. Appliance produces unwanted odors. Appliance shuts off during use. Gas odor even when control knob is in OFF position. When ignitor button is pressed, there is spark at ODS pilot, but no ignition. POSSIBLE CAUSE 1. Ignitor electrode positioned wrong. 2. Igni[...]

23D8020 33 OBSERVED PROBLEM ODS/pilot lights, but flame goes out when control knob is released. Burner does not light after ODS/ pilot is lit. Burner backfires during com- bustion. Slight smoke or odor during initial operation. Logs appear to smoke after ini- tial operation. Heater produces a whistling noise when burner is lit. No gas to pilot. Blo[...]

34 23D8020 1 2 3 4 8 8 8 8 8 8 13 7 5 6 14 12 Failure to position the parts in accordance with these diagrams or failure to use only parts speci fi cally approved with this appliance may result in property damage or personal injury . W ARNING ILLUSTRA TED P ARTS BREAKDOWN[...]

23D8020 35 REPLACEMENT P ARTS LIST Item Qty Description DIS33N/P 1 1 Screen Assembly 23D8028 2 1 Canopy Assembly 23D8027 3 2 T op Black Louver 23D0200K 4 1 Bottom Black Hang On Louver Assembly 23D8017 5 1 Left Firebrick 26D7041 6 1 Right Firebrick 26D7042 7 1 Center Firebrick 26D7040 OPTIONAL F ACE PLA TE 8 1 33" x 43" Black Face Plate Ki[...]

36 23D8020 5 6 3 4 8A 8B 1 2 7 ILLUSTRA TED P ARTS BREAKDOWN Failure to position the parts in accordance with these diagrams or failure to use only parts speci fi cally approved with this appliance may result in property damage or personal injury . W ARNING[...]

23D8020 37 REPLACEMENT P ARTS LIST REPLACEMENT P ARTS ARE A V AILABLE THROUGH YOUR RET AILER. Item Description Qty DIS33N DIS33P Common Parts 1 Piezo Ignitor 1 14D0503 14D0503 2 Piezo Wire 1 00K0632 00K0632 3 Burner 1 70D0104 70D0104 Milli-V olt Control 4 Control V alve 1 14D0467 14D0468 5 Burner Injector 1 58D0051 58D0052 6 ODS Pilot Assembly 1 14[...]

38 23D8020 #1 #2 #4 #5 #3 #6 REPLACEMENT P ARTS ARE A V AILABLE THROUGH YOUR RET AILER. ILLUSTRA TED P ARTS BREAKDOWN Failure to position the parts in accordance with these diagrams or failure to use only parts speci fi cally approved with this appliance may result in property damage or personal injury . W ARNING CHARRED TIMBER LOGS Item Descripti[...]

23D8020 39 NOTES[...]

MA Y 2006 P/N 23D8020 • Rev . 4 LIMITED LIFETIME W ARRANTY POLICY The following components are warranted for life to the original owner, subject of proof of purchase: Firebox, Combustion Chamber, Heat Exchanger, Grate, and Stainless Steel Burners. FIVE YEAR W ARRANTY The following components are warranted for 5 years to the original owner, subjec[...]