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Monessen Hearth dst30 - page 1
This is an unv ented gas-fi red heater . It uses air (o xygen) from the room in which it is installed. Provisions f or adequate combustion and v entilation air must be provided. Ref er to page 7. READ AND SA VE THESE INSTR UCTIONS W ARNINGS If the information in this man ual is not follo wed exactl y , a fi re or explosion ma y result causing pro ...
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Monessen Hearth dst30 - page 2
2 43D0122 CONTENTS IMPOR T ANT SAFETY INFORMA TION ............................................................................................................... 3 GETTING ST AR TED ............................................................................................................................................ 5 PRODUCT FEA TURES AND SP ...
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Monessen Hearth dst30 - page 3
43D0122 3 8. CARBON MONO XIDE POISONING: Early signs of carbon monoxide poisoning are similar to the fl u with headaches, dizziness and/or nausea. If you hav e these signs, obtain fresh air immediately . Hav e the heater serviced as it may not be operating properly . 9. The installation must conform with local codes or , in the absence of local co ...
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Monessen Hearth dst30 - page 4
4 43D0122 IMPOR T ANT SAFETY INFORMA TION This appliance may be installed in an after - market, permanently located, manufactured (mobile) home, wher e not prohibited by local codes. This appliance is only f or use with the type of gas indicated on the rating plate. This appliance is not con vertible f or use with other gases. Continued fr om page ...
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Monessen Hearth dst30 - page 5
43D0122 5 MAKE SURE Y OU HA VE RECEIVED ALL P ARTS: Check your packing list to verify that all listed parts ha ve been recei ved. Y ou should hav e the following: • Un vented gas log grate/burner assembly • Plastic bag containing crushed volcanic rock • Installation/operating instructions • Four (4) anchoring scre ws • Ceramic Fiber logs ...
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Monessen Hearth dst30 - page 6
6 43D0122 NA TURAL GAS Milli-V olt 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. PR ODUCT FEA TURES AND SPECIFICA TIONS PROP ANE/LPG Note: An external regulator is required to reduce supply pressure to a maxim um of 13" w .c. Milli-V olt Pre ...
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Monessen Hearth dst30 - page 7
43D0122 7 GENERAL INST ALLA TION INFORMA TION CODES Adhere to all local codes or , in their absence, the latest edition of THE N A TIONAL FUEL GAS CODE ANSI Z223.1 or NFP A54 which can be obtained from… American National Standards Institute, Inc. 1430 Broadway Ne w Y ork, NY 10018 or National Fire Pr otection Association, Inc. Batterymarch Park Q ...
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Monessen Hearth dst30 - page 8
8 43D0122 W H WA RNING If the area in which the heater ma y be operated is smaller than that defi ned as an unconfi ned space or if the building is of un usually tight construction, pro vide adequate combustion and ventilation air b y one of the methods described in the National Fuel Gas Code, ANSI Z223.1/NFP A54, Section 5.3 or applicable local ...
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Monessen Hearth dst30 - page 9
43D0122 9 WA RNING A C B WA RNING Model A B C DST30 36" 20 1 / 4 " 21 1 / 2 " FIREPLA CE AND HEAR TH DIMENSIONS Use manufacturer's installation and clearance requirements as defi ned in their manual. The DST30 Series un vented room heater is approv ed for installation into the following un vented fi replaces: GPF36, GSTF36, GR ...
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Monessen Hearth dst30 - page 10
10 43D0122 WA RNING Height of Restriction (X) Minimum Depth of Fireplace/Firebo x No restr iction 20 1 / 4 " 0.5 to 1.5" 24" Greater than 1 1 / 2 " to 3" 26" Greater than 3: ANY BARRIER GREA TER THAN THREE INCHES (3") PLA CED IN FRONT OF THE GAS LOG SET IS NO T RECOMMENDED BY THE MANUF A CTURER. PLA CEMENT IN A FI ...
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Monessen Hearth dst30 - page 11
43D0122 11 36" 36" 42" 1 3 / 4 " WA RNING The dimensions sho wn in Figures 4 thr ough 10 and defined in the fireplace manufacturer's instructions are minim um clearances to maintain when installing this heater . When heater is installed into a ventless fi rebo x, minimum clearances, as specifi ed by the ventless fi rebo ...
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Monessen Hearth dst30 - page 12
12 43D0122 Measure this distance Heater in Fireplace or Firebo x Heat Resistant Material Figure 5 - Measuring Heat Resistant Material IMPORT ANT : 1. If installing unit into an unv ented fi rebox, minimum required clearances listed in the fi rebox installation manual must be met. 2. If installing unit into a vented fi rebox with a working damper ...
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Monessen Hearth dst30 - page 13
43D0122 13 Heater in Fireplace or Firebo x 8" or More of Heat Resistant Material Hood CLEARANCES and HEIGHT REQUIREMENTS Figure 6 - Measuring Heat Resistant Material for Mantel Heat resistant material (minimum requirements) with w ooden mantel or other combustible pr ojection: To install the heater with a wooden mantel, shelf or other combusti ...
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Monessen Hearth dst30 - page 14
14 43D0122 Minimum of 8" Heat Resistant Material Mantel Hood 2 1 / 2 " 13" 6" 7" 17" 4" Heater in Fireplace or Firebo x Heat Resistant Material 10" or less 12" min. 28" Figure 8 - Minimum Mantel Clearance with Hood Figure 7 - Minimum Mantel Clearance with No Hood Example: The bottom of the mantel ma ...
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Monessen Hearth dst30 - page 15
43D0122 15 Heater in Fireplace or Firebo x 5" Minimum Combustib le Material 14" Minimum Heater in Fireplace or Firebo x Combustib le Material This Distance Ma y Now Be Less than 5" FLOOR CLEARANCE The gas log heater must be installed at least 5" abo ve an y comb ustible fl ooring material, such as carpeting or tile, which is cl ...
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Monessen Hearth dst30 - page 16
16 43D0122 Damper Stop Damper WA RNING Figure 11 - Damper Stop Installation. (See W ARNING at top of next pa g e .) FIREPLA CE PREP ARA TION BEFORE FULL Y INST ALLING THE UNIT : • T urn OFF the gas supply to the fi replace or fi rebox. • Seal any fresh air vents and/or ash clean-out doors located on the fl oor or wall of the fi replace. If ...
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Monessen Hearth dst30 - page 17
43D0122 17 WA RNING WA RNING ASSEMBL Y PROCEDURE: 1. Center the gas log unit in the fi replace or fi rebox. Make certain the front feet of the grate sit inside the front edge of the fi replace or fi rebox. 2. Anchor holes are located on the right and left sides of the unit. After centering the grate correctly , mark the hole posi tions on the ? ...
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Monessen Hearth dst30 - page 18
18 43D0122 CA UTION Pipe Coupling To Heater V alve Gas Supply Inlet Use new b lack iron or steel pipe. Internally tinned copper or copper tubing can be used per National Fuel Code, section 2.6.3, providing gas meets h ydrogen sulfi de limits, and where permitted by local codes. Gas piping system m ust be siz ed to pro vide minimum inlet pressure ( ...
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Monessen Hearth dst30 - page 19
43D0122 19 T est P or t “OUT” WA RNING Connecting directl y to an unregulated pr opane/LPG tank can cause an explosion. CHECKING GAS PRESSURE The heater gas inlet connection is a female 3 / 8 " NPT at the v alve. The inlet connection is on the right side of unit when facing the control. T o connect from the opposite side, rotate unit 180° ...
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Monessen Hearth dst30 - page 20
20 43D0122 CA UTION Label all wires prior to disconnection when servicing controls. Wiring error s can cause improper and dangerous operation. V erify proper operation after servicing. ELECTRICAL WIRING (MILLI-V OL T) The milli-volt v alve is a self-po wered combination gas control THA T DOES NO T REQUIRE 110 V AC T O OPERA TE. CONNECTING OPTIONAL ...
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Monessen Hearth dst30 - page 21
43D0122 21 ELECTRICAL WIRING (MILLI-V OL T) A. COMPLETE MILLIV OL T SYSTEM CHECK (“A” Reading - Thermostat contacts CLOSED - Control Knob “ON” - Main burner should turn ON) a. If the reading is more than 175 milli-volts and the automatic v alve still does not come on, replace the control. b . If the closed circuit reading (“ A” reading) ...
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Monessen Hearth dst30 - page 22
22 43D0122 Pins DO NO T sprinkle v olcanic rock on the logs or around the pilot or the main b urner . This may cause sooting. Place vo lcanic roc k only on the fl oor of the fi replace . During initial operation of the ne w heater , burning logs will give off a paper b urning smell and orang e fl ames will be present. Simply open the windo ws fo ...
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Monessen Hearth dst30 - page 23
43D0122 23 FLAME APPEARANCE Flames from the pilot, fr ont and rear burner should be visually c hecked as soon as the heater is installed. In addition, periodically check the fl ames visually during operation. CHECKING THE PILO T FLAME The pilot fl ame must al ways be present when the heater is in operation. It should just touch the top of the the ...
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Monessen Hearth dst30 - page 24
24 43D0122 In normal operation at full rate after 15 minutes, the follo wing fl ame appearances should be obser ved: Figure 20 - Correct Appearance of Flames The flames should be yello w and extend 3"-4" abov e the log top surfaces. The yello w flames should not contact the logs. OPERA TING INSTR UCTIONS Av oid an y drafts that alter bur ...
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Monessen Hearth dst30 - page 25
43D0122 25 WA RNING Figure 21 - Location of Piezo Ignitor , Control Knobs and Switc h on Milli-V olt Unit If y ou do not follow these instruction e xactl y , a fi re or explosion ma y result causing property damage, personal injury or loss of life. FOR Y OUR SAFETY READ BEFORE LIGHTING A. This appliance is equipped with an ignition de vice which a ...
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Monessen Hearth dst30 - page 26
26 43D0122 PILOT LO ON OF F HI OPERA TING INSTRUCTIONS MILLI-V OL T CONTROL LIGHTING INSTRUCTIONS 1. STOP! Read the safety information label. 2. Make sure the manual shutof f valv e is fully open. 3. This gas log set is equipped with an ignition de vice (piezo) which automatically lights the pilot. If piezo ignitor does not light the pilot, refer t ...
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Monessen Hearth dst30 - page 27
43D0122 27 T urn off heater and allo w to cool before c leaning. Disconnect electrical power bef ore cleaning or servicing. WA RNING OPERA TING INSTRUCTIONS AND CLEANING AND SER VICING MA TCH LIGHTING INSTR UCTIONS 1. Remov e any items necessary for easy access to the pilot (for example: logs, screens, etc.). 2. Follo w appropriate lighting instruc ...
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Monessen Hearth dst30 - page 28
28 43D0122 OBSER VED PROBLEM When ignitor button is pr essed, there is no spark at ODS/pilot. A ppliance pr oduces unwanted odors. Appliance shuts off during use. Gas odor ev en when control knob is in OFF position. When ignitor button is pr essed, there is spark at ODS pilot, b ut no ignition. POSSIBLE CA USE 1. Ignitor electrode positioned wrong. ...
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Monessen Hearth dst30 - page 29
43D0122 29 If the gas quality is bad, your pilot ma y not stay lit, the burners ma y produce soot and the heater may bac kfi re when lit. If the gas quality or pressure is low , contact y our local gas supplier immediately . WA RNING OBSER VED PROBLEM ODS/pilot lights, but f la me goes out when control knob is re leased. Burner does not light afte ...
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Monessen Hearth dst30 - page 30
30 43D0122 1 2 9 4 11 6 12 7 8 5 3 10 ILLUSTRA TED P ARTS BREAKDO WN WA RNING F ailure to position the parts in accor dance with these diagrams or failure to use only par ts specifically appro ved with this appliance may result in pr oper ty damage or personal injury . ...
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Monessen Hearth dst30 - page 31
43D0122 31 REPLA CEMENT P ARTS LIST REPLA CEMENT P AR TS ARE A V AILABLE THROUGH Y OUR RET AILER. Accessories Flex Connector Flexcon 30 All Models Wall Switch Kit MVWS Milli-volt only W all Ther mostat Kit MVWTS Milli-volt only Hand Held Remote MRC Milli-volt only Hand Held Ther mostat Remote TRC Milli-volt only DST30 Item Description Qty Natural P ...
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Monessen Hearth dst30 - page 32
September 2001 P/N 43D0122 • Rev . 1 MONESSEN HEAR TH SYSTEMS LIMITED LIFETIME W ARRANTY POLICY LIFETIME W ARRANTY The follo wing 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 follo wing components ar ...
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