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BLUE-FLAME VENT-FREE
NATURAL GAS HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
®
WARNING: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury, or loss
of life.
— Do not store or use gasoline or other
flammable vapors and liquids in the vicinity of
this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• 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.
This appliance may be installed in an aftermarket* manufactured (mobile) home, where not
prohibited by state or local codes.
*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer. (I.E. Installation of this
product is permitted after the manufactured (mobile) home is sited)
MBN20LB
Save this manual for future reference.
™
WARNING: Improper installa-
tion, adjustment, alteration, ser-
vice, or maintenance can cause
injury or property damage. Re-
fer to this manual for correct
installation and operational pro-
cedures. For assistance or ad-
ditional information consult a
qualified installer, service
agency, or the gas supplier.
WARNING: This is an unvented
gas-fired heater. It uses air (oxy-
gen) from the room in which it is
installed. Provisions for ad-
equate combustion and ventila-
tion air must be provided. Refer
to Air for Combustion and Ven-
tilation section on page 4 of this
manual.
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Related Manuals for Medallion MBN20LB
Summary of Contents for Medallion MBN20LB
- Page 1 ™ BLUE-FLAME VENT-FREE NATURAL GAS HEATER OWNER’S OPERATION AND INSTALLATION MANUAL ® MBN20LB WARNING: Improper installa- WARNING: If the information in this manual is not tion, adjustment, alteration, ser- followed exactly, a fire or explosion may result vice, or maintenance can cause causing property damage, personal injury, or loss injury or property damage.
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Page 2: Safety Information
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS SAFETY 1. This appliance is only for use with the 11. Carefully supervise young children type of gas indicated on the rating plate. when they are in same room with INFORMATION This appliance is not convertible for use heater. -
Page 3: Product Identification
OWNER’S MANUAL PRODUCT PRODUCT IDENTIFICATION FEATURES SAFETY DEVICE Ignitor Button Control Knob This heater has a pilot with an Oxygen Depletion Sensor Shutoff System (ODS). The ODS/pilot is a required feature for vent- free heaters. The ODS/pilot shuts off the heater if there is not enough fresh air. -
Page 4: Air For Combustion And Ventilation
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS AIR FOR PROVIDING ADEQUATE Confined and Unconfined Space VENTILATION COMBUSTION AND The National Fuel Gas Code (ANS Z223.1, 1992 Section 5.3) defines a confined space The following are excerpts from National VENTILATION as a space whose volume is less than 50 Fuel Gas Code. -
Page 5: Determining Fresh-Air Flow For Heater Location
OWNER’S MANUAL AIR FOR COMBUSTION AND VENTILATION Continued DETERMINING FRESH-AIR FLOW FOR HEATER LOCATION Determining if You Have a Confined or Unconfined Space Use this worksheet to determine if you have a confined or unconfined space. Space: Includes the room in which you will install heater plus any adjoining rooms with doorless passageways or ventilation grills between the rooms. - Page 6 ™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS AIR FOR COMBUSTION 12" AND VENTILATION Continued VENTILATION AIR Ventilation Grills Ventilation Air From Inside Into Adjoining Room, Building Ventilation Option 2 Grills This fresh air would come from an adjoining into Adjoining Remove unconfined space.
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Page 7: Check Gas Type
OWNER’S MANUAL INSTALLATION You can locate model MBN20LB on the CAUTION: If you install the floor, away from a wall. An optional floor heater in a home garage mounting stand is needed. Purchase the floor NOTICE: This heater is intended •... - Page 8 ™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS INSTALLATION Marking Screw Locations Attaching to Wall Anchor Method For attaching mounting bracket to hollow 1. Tape mounting bracket to wall where Continued walls (wall areas between studs) or solid heater will be located. Make sure...
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Page 9: Connecting To Gas Supply
OWNER’S MANUAL INSTALLATION CONNECTING TO GAS Typical Inlet Pipe Diameters SUPPLY Continued 20,000 Btu/Hr models 3/8" or greater 30,000 Btu/Hr models 1/2" or greater Installing Bottom Mounting WARNING: A qualified ser- Installation must include a manual shutoff Screws vice person must connect heater valve, union, and plugged 1/8"... -
Page 10: Checking Gas Connections
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS INSTALLATION Test Pressures Equal To or Less Than Pressure Testing Heater Gas 1/2 PSIG Connection Continued 1. Close manual shutoff valve (see Fig- Open manual shutoff valve (see Fig- CHECKING GAS ure 13). -
Page 11: Operating Heater
OWNER’S MANUAL OPERATING HEATER CAUTION: Do not try to ad- Turn control knob clockwise just heating levels by using the to the OFF position (see Figure 15). FOR YOUR manual shutoff valve. Wait five (5) minutes to clear out any SAFETY READ gas. -
Page 12: Inspecting Burner
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS INSPECTING We also recommend that you keep the burner NOTICE: Do not mistake orange tube and pilot assembly clean and free of flames with yellow tipping. Dirt BURNER dust and dirt. To clean these parts we recom-... -
Page 13: Troubleshooting
OWNER’S MANUAL TROUBLESHOOTING WARNING: Turn off and un- CAUTION: Never use a wire, plug heater and let cool before needle, or similar object to clean Note: All troubleshooting items are listed servicing. Only a qualified ser- ODS/pilot. This can damage ODS/ in order of operation. - Page 14 ™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS TROUBLESHOOTING Continued POSSIBLE CAUSE OBSERVED PROBLEM REMEDY 1. Burner orifice is clogged or damaged Burner backfiring during 1. Clean burner (see Cleaning and Mainte- nance, page 12) or replace burner orifice combustion 2. Inlet gas pressure is too low 2.
- Page 15 OWNER’S MANUAL TROUBLESHOOTING Continued WARNING : If you smell gas • Shut off gas supply. • Do not try to light any appliance. • 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.
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Page 16: Technical Service
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS TECHNICAL SPECIFICATIONS SERVICE Btu (Variable) 10,000/20,000 You may have further questions about in- Type Gas Natural Only stallation, operation, or troubleshooting. Ignition Piezo If so, contact Cans Unlimited, Incorporated’s Pressure Regulator Setting 3" W.C. -
Page 17: Replacement Parts
OWNER’S MANUAL ACCESSORIES REPLACEMENT PARTS Purchase these heater accessories from your local dealer. If they can not supply these Note: Use only original replacement parts. accessories, either contact Cans Unlimited, This will protect your warranty coverage for Incorporated’s Parts Department at 1-800- parts replaced under warranty. -
Page 18: Illustrated Parts Breakdown
™ BLUE-FLAME MBN20LB VENT-FREE NATURAL GAS HEATERS ILLUSTRATED PARTS BREAKDOWN MBN20LB 12-1 12-2 ODS/Pilot 105735... -
Page 19: Parts List
OWNER’S MANUAL PARTS LIST This list contains replaceable parts used in your heater. When ordering parts, follow the instructions listed under Replacement Parts on page 17 of this manual. MBN20LB PART NUMBER DESCRIPTION QTY. 098304-01 Screw, #10 x 3/8" 098742-21... -
Page 20: Warranty Information
We make no other warranty, expressed or implied. LIMITED WARRANTY MEDALLION VENT-FREE HEATERS Cans Unlimited, Incorporated warrants this product to be free from defects in materials and components for two (2) years from the date of first purchase, provided that the product has been properly installed, operated and maintained in accordance with all applicable instructions.