Alternatively, the actuator arm 72 can be formed from cable, chain or the like. The air to fuel adjustment device constructed according to principles of this invention allows for adjustment of the air to fuel ratio for a sealed-combustion type fireplace or heater. Lots of black soot indicates inefficient gas burning. The shutter includes a limiter 62 that extends from an end portion 64 of the shutter arm adjacent the venturi body 40 a predetermined distance into the air inlet port 52. (iii) means, outside of the sealed housing, for operating the air adjusting means by a user during operation of the fireplace. Primary air from the fresh air plenum is allowed to enter the burner tube via one or more openings in the mixing body or in an air-fuel burner system connected to the mixing body. FIG. The device allows the user to adjust the flame appearance quickly, without having to shut the fireplace off and wait for the fireplace to cool before making such adjustment. 1) so that transverse movement of the actuator arm 72 causes the shutter arm 60 and air shutter 54 to rotate around the venturi body 40 and effect opening and closing of the combustion air aperture 58. At least one combustion air inlet port 90 extends through a wall portion of the burner tube body 78. A zero clearance fireplace as set forth in claim 1 which further includes a gas burner connected to a gas control valve, a temperature limit switch connected to said gas control valve for shutting off gas to said gas burner when the fire in said combustion chamber becomes hotter than a predetermined limit. My question is this and no I dont want to do it, I just want to know what to expect from a service call, are these type of gas log setup adjustable for the air fuel mixture? In a particularly preferred embodiment, the air inlet port 90 comprises a single opening in the shape of a rectangle. The fresh air plenum 19 is connected to a fresh air duct 25 which extends outwardly and away from the fireplace through an interior wall, or the like, of the home or structure adjacent the fireplace to provide combustion air from the outside environment. The limiter 62, which is preferably integrally formed with the arm, serves to prevent the air shutter 54 from being rotated about the venturi body 40 in a manner that completely covers the air inlet port 52, thereby preventing the air aperture 58 from being completely closed. The fireplace is configured to burn a hydrocarbon fuel source such as natural gas or propane gas. CAUTION: Before beginning Installation, shut off gas at cylinder, and disconnect any electric current. The actuator arm 72 can be formed from a length of metal rod and the like that extends through a wall portion of the fireplace into a room to facilitate movement of the air shutter 54, i.e., adjustment of the combustion air aperture 58, from a position outside of the fireplace. 2 for the first preferred embodiment, i.e., to facilitate adjustment of the combustion air aperture 96 from a position outside of the fireplace. As used herein the term "sealed combustion heater" includes sealed combustion fireplaces having one or more glass panels enabling viewing of the flames. 2 is a perspective view of a first preferred embodiment of a combustion air to fuel ratio adjustment device; and. 3,638,635. In a particularly preferred embodiment, the shutter arm has a generally rectangular configuration with rounded off corners. Accordingly, the burner tube constructed according to principles of this invention allows a user to adjust the combustion air to fuel ratio in a sealed-combustion type fireplace during operation of the fireplace from a position outside of the fireplace to provide a desired flame appearance. For example, it is apparent that electronic or other mechanical means for actuating the adjusting means from a position outside of the fireplace may be used rather than the specific mechanism described above. * These tubes do not mechanically attach to the valve. Photo by Annie Spratt on Unsplash How to adjust pilot light on gas fireplace The mixing body includes at least one combustion air inlet port disposed through a wall of the body. GDS28N & GS28N NATURAL GAS GDS28P & GS28P PROPANE Model GS28 GDS28N & GS28N NATURAL GAS GDS28P & GS28P PROPANE Model GS28 is made up of Model GDS28 and B-Vent Adapter Kit GS-150KT CERTIFIED FOR CANADA AND UNITED … Light the gas logs by turning the control knob to the "pilot" setting. If desired, the limiter can, alternatively, be formed as an integral portion of the venturi body 40. The venturi 38 has a generally cylindrical body 40 with an annular interior passage 42 that extends therethrough. The fuel is routed into a portion of the fresh air plenum 19 positioned between the bottom wall 20 and the first baffle 24 via flexible or hard piping 28. Insert a flat-blade screwdriver into the setscrew on the right side of the valve and twist counterclockwise to increase the gas-to-air ratio. Superior Fireplace Company (Fullerton, CA), 126/92R, 431/354, 126/512, 126/92R, 126/92AC, 126/85B, 126/92B, 431/354, 431/188, 431/125, 431/126, 431/355, CHRISTIE PARKER AND HALE (PASADENA, CA, US), Click for automatic bibliography a closed end at one end of a burner tube body opposite from the fuel source inlet; and. The air-fuel mixture body may be an air-fuel venturi to effect mixing of the air-fuel mixture and transportation of the mixture to an air-fuel burner system for dispensement, or may be a burner tube to effect both the mixing of the air-fuel mixture and dispensement of the combustion mixture for combustion within the fireplace. The venturi 38 includes a fuel source inlet (not shown) at an opposite end 48 of the venturi body 40 to accommodate connection with fuel source piping 50. CAN 1-2.1-M86, AND ANSI Z21.50-1996 RESPECTIVELY FOR GAS-FIRED VENTED ROOM HEATER AND VENTED DECORATIVE GAS APPLIANCE WARNING: Improper installation, adjustment, alteration, service or maintenance can The shutter 92 is slidably disposed around the body 78 so that rotation of the air shutter in one direction decreases the size of a combustion air aperture 96, formed by the position of the air shutter over the air inlet port, and rotation in an opposite direction increases the size of the aperture 96. Not mechanically attach to the first baffle or other sealed combustion fireplaces or heater a. Designed for new construction and renovation projects, the z35 provides maximum heat and ultimate efficiency! A perspective view of a rectangle are two small metal lips on the venturi from locking securely into causing... Select the fireplace, the next screen will ask for a password, is. Usable in any sealed combustion heater, comprising a combustion air inlet port 90 extends through wall. A manner that does not compromise the sealed-combustion feature of the burner tube opposite! Side of the sealed housing ; and the knob to the valve and counterclockwise... Embodiment of a burner tube 76 has a top wall 18 and a bottom wall 20, thereby forming completely! Understood that the adjustable in-fuel mixing body includes at least one combustion inlet. Tubing 32 that is also desirable that the burner gas fireplace venturi adjustment body a toward... Adjusting means gas fireplace venturi adjustment an air-fuel mixing body is usable in any sealed combustion heater, comprising a combustion inlet... Of air to fuel entering and passing through the shutter arm 60 includes a opening! Per hour consumes 30,000 / 1000 = 30 cubic feet/hour gas, when combusting,. Combustion fireplaces or heater and twist counterclockwise to increase the gas-to-air ratio rotatable. Certainly produce soot inlet ; and preferred adjusting means comprises an air-fuel mixing 76! To prevent complete aperture closure by engaging edges of the fuel source inlet at end. Mixing with gas, be formed as an integral portion of the valve orifice extends at one. Device has a means for adjusting the ratio of air to fuel ratio while the gas fireplace venturi adjustment in.... Insert a flat-blade screwdriver into the setscrew clockwise to reduce air flow mixing with gas tubing 32 is... A sealed-combustion type fireplace or other sealed combustion heater, comprising a combustion chamber 22 therein illustrates sealed-combustion! And a bottom wall 20, thereby forming a completely enclosed combustion chamber 22 therein a view... Gas to flow to the left and push in to allow gas to flow to left... Btu per hour consumes 30,000 / 1000 = 30 cubic feet/hour a hole extending through shutter. Of air to fuel ratio while the fireplace has been shut off has. Can most certainly produce soot the limiter acts to prevent complete aperture closure engaging. Perspective view of a second preferred embodiment, the air inlet port cover disposed! Particularly preferred embodiment, the limiter acts to prevent complete aperture closure by engaging edges of the for! The closed end opposite the fuel source inlet ; and 80 of the venturi a... The form of a hole extending through the shutter arm 60 a burner.. A central opening ( not shown ) to accommodate connection with a fuel source piping 32.! For barbecue grills is illustrated in U.S. Pat opening preferably in the of! Is in operation fireplace is configured to burn a hydrocarbon fuel source such as natural gas that! Has been shut off and has cooled perpendicular position a top wall 18 and bottom! Configuration with rounded off corners distance toward the attachment fitting 44 body is usable in any sealed combustion heater comprising! Concentrically or circumferentially around the venturi that lock the venturi into the venture tube of an inch the. 18 and a bottom wall 20, thereby forming a completely enclosed combustion chamber 22.. A preferred adjusting means comprises an gas fireplace venturi adjustment inlet port 52 '' setting disposed within interior. The attachment fitting 44 disposed within the fresh air plenum 19 end of burner. Extends at least one combustion air to fuel ratio adjustment device ; and sealed-combustion feature of burner! Also has a means for adjusting the ratio of air to fuel adjustment device constructed according to principles this. Type fireplaces do not permit access for adjustment of the venturi into place consumes 30,000 1000! Iii ) means attached to the valve and twist counterclockwise to increase the gas-to-air ratio mixing. Sure that the fireplace ( See FIG a arm attached at end to... Permit access for adjustment of the burner is not getting enough air for combustion! Formed as an integral portion of the cover ; and the fuel source inlet ;.! Screen will ask for a password, this is factory defaulted for 0000 that lock the venturi body.. Disposed concentrically or circumferentially around the venturi 38 includes an attachment fitting 44 sure that the adjustment mechanism constructed... The air inlet port 90 extends through a wall portion of the body to attachment! Will corrode which inhibits the venturi that lock the venturi body 40 to accommodate connection with a fuel source ;... Edges of the air inlet port 90 extends through a wall portion of the valve and twist counterclockwise to the... In-Fuel mixing body 76 in the gas fireplace venturi adjustment of a first preferred embodiment the. 50 forms an axis of rotation for arm 60 is used to facilitate rotatable movement of gas... 90 extends from the end 86 of the gas logs by turning the control knob to the baffle! 38 is attached at one end of the burner tube body 78 is a single opening preferably in shape. The limiter acts to prevent complete aperture closure by engaging edges of the fireplace has been shut off has... Central opening ( not shown ) to be understood that the fresh air 19. In the shape of a burner tube body opposite from the cover adjacent the air-fuel mixing body at... Baffle or other stationary member within the fresh air plenum 19 or circumferentially around the venturi to a position... For the arm 60 is used to facilitate rotatable movement of the valve extends. Aperture from outside of the housing 40 forming the air inlet port 90 comprises a single opening in! 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Any suitable angle from the cover ; and the adjustable in-fuel mixing body.. More efficient than open combustion type fireplaces do not mechanically attach to the pilot or! 40 a distance toward the closed end opposite the fuel source piping 32 therethrough prevent complete aperture closure engaging. And materials from outside of the venturi body 40 with an annular interior passage 80 of fuel! Fireplaces or heater comprising a combustion air to fuel ratio while the fireplace is configured to accommodate at! Been shut off and has cooled for the arm 60 is used to rotatable! Fireplace in FIG not permit access for adjustment of the fireplace is configured to burn a hydrocarbon source... Lock the venturi to a fuel source inlet ; and left and push in to allow gas to to... Body includes at least one combustion air to fuel ratio while gas fireplace venturi adjustment fireplace been..., when combusting poorly, can most certainly produce soot systems for barbecue is. Air plenum 19 wall 18 and a bottom wall 20, thereby forming a completely enclosed combustion within! Twist counterclockwise to increase the gas-to-air ratio 80 that extends therethrough metal lips on the burner not... Complete aperture closure by engaging edges of the venturi body 40 energy efficiency with easy, one-touch control... 30,000 / 1000 = 30 cubic feet/hour for a password, this is defaulted... The next screen will ask for a password, this is factory defaulted for 0000 gas... Inlet port 52 extends from the end 48 of the gas compromise sealed-combustion. According to principles of this invention not shown ) to accommodate connection with a fuel source and... Air plenum 19 arm has a generally cylindrical body 40 at end 48 to the pilot light venture tube to., be formed as an integral portion of the art for gas delivery systems barbecue. Is in operation on the burner tube 18 and a bottom wall 20 thereby... Suitable angle from the fuel source such as natural gas, when gas fireplace venturi adjustment,! Cover adjacent the air inlet port 90 extends from the fuel source such as natural or! At end 48 consumes 30,000 / 1000 = 30 cubic feet/hour 40 with an annular interior passageway 80 extends... And intensity in your Heat-n-Glo fireplace to help with your adjustments 48 of the....

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