Unvented portable type gas camp heaters for indoor and outdoor use
ANSI 1`Z21.103-2017
This Standard applies to newly produced gas-fired unvented portable type gas camp heaters includingthe catalytic type, hereinafter referred to as either "heaters" or "portable heaters" having an input upto and including 18 000 Btuh (5.27 kW) using one or more fuel sources such as propane, buatne, oridentified propane and butane blended gases.
Portable heaters are intended for the following uses:aindoor heating in small recreational enclosures, such as fishing huts, tents, and hunting blindswhen such enclosures have adequate means for combustion air and ventilation and when:used with disposable cylinder(s) of nominal water capacity of 2.7 lb (1.1 kg) (nominal 1 lb(0.45 kg)] LP-gas or less;or
connected to a remote self-contained outdoor LP-gas supply system having a maximum size ot20 lb (9.1 kg) of fuel, that provides a regulated outlet pressure not exceeding 11 inches watercolumn(2.74 kPa);
emergency indoor home heating, when the space to be heated has adequate means for6)combustion air and ventilation and when used with disposable cylinder/s) of nominal watercapacity of 2.7 lb (1.1 kg) nominal 1 lb (0.45 kg)] LP-gas or less and such emergency indoor heatersidentified for use in:i)bedrooms when the heaters have an input setting of 10,000 Btu/hr or less (2 931 W); andi) bathrooms when the heaters have an input setting of 5,000 Btu/hr or less (1 465 W)outdoor heating, when provided with a self-contained LP-gas propane or butane supply systemhaving a maximum size of 20 lb (9.1 kg) of fuel, that provides a regulated outlet pressure notexceeding 11inches water column(2.74 kPa).
Definitions
The following definitions shall apply in this Standard:
Accessory - a compatible component supplied by the appliance manufacturer that will still allow safeoperation of a unit, which is not necessarily provided with the appliance at the time of purchase.
Angle of critical balance - the minimum angle through which a heater must be tipped to cause theheater to tip over due to solely the force of gravity.
Automatic valve for gas appliances - an automatic or semi-automatic device consisting essentially of avalve and operator that controls the gas supply to the burner(s) during normal operation of anappliance. The operator may be actuated by application of gas pressure on a flexible diaphragm, by
electrical means, by mechanical means, or by other means.Semi-automatic valve -- a valve that is opened manually and closed automatically, or vice versa.BTU - abbreviation for British Thermal Unit. The quantity of heat required to raise the temperature of1 pound of water 1F.
Burner -- a device for the final conveyance of the gas, or a mixture of gas and air, to the combustionzone.
Catalyst -- a material used to promote a reaction between fuel gas and oxygen during the combustionprocess of a fuel gas, but which, itself, does not enter into the combustion process.
Catalytic heater - an open face, unvented heating appliance that utilizes a catalyst in the combustionprocess of a fuel gas.
Catalytic pad - a porous structure containing a catalyst through which a fuel gas passes.
Combustion - as used in this Standard, the rapid oxidation of fuel gases accompanied by theproduction of heat or heat and light.
Combustion products - constituents resulting from the combustion of a fuel gas with the oxygen ofthe air, including the inerts by excluding excess air.
Controls - devices designed to regulate the gas, air, water, or electrical supplies to a gas appliance,which may be manual, semi-automatic, or automatic.
Cubic foot of gas - the amount of gas that would occupy 1 ft3 at a temperature of 60%, if saturatedwith water vapor and under a pressure equivalent to that of 30 inches of mercury.
Cylinder, fuel - as used in this Standard, a container complvying with the Department of Transportation specifications for containers used for the transportation and storage of liquid and/or vapor fuels Discharge air openings - an opening or a series of openings in the same plane separated by less than 1inch of unbroken surface between openings through which heated air (excluding flue products) isdischarged. For any opening through which ambient air is drawn in and discharged at a higher temperature through the same opening, the entire opening is to be deemed the discharge air opening
Equilibrium - for the purpose of the combustion test specified in Clause 5.4, Combustion, equilibriumis considered to be reached after the following conditions are met:the heater is operated for minimum of 8 hours when tested at 0.5 air change per hour, aaminimum of 4 hours when tested at 1.0 air change per hour, and a minimum of 2 hours and 40 minutes when tested at 1.5 air changes per hour; and 6 samples of the room air, withdrawn at a minimum of three consecutive % hour intervals after theminimum operating time for the specific test condition and analyzed for carbon monoxide in partsper million and for oxygen in percent by volume, do not indicate an increase of more than one partper million for carbon monoxide and a decrease of 0.16 percent by volume for oxygen betweeneach consecutive reading.
Excess air - air that passes through the combustion chamber and the appliance flues in excess of thatwhich is theoretically required for complete combustion.
Hydrocarbon emission (for catalytic heaters only)
The hydrocarbon emission of a catalytic heater shall be deemed satisfactory when a concentration ofhydrocarbons (unreacted fuels expressed as propane) not in excess of 500 ppm is produced in a roomwith no air changes occurring during combustion of the amount of gas necessary to reduce the oxygencontent of the room to a quantity equal to 19.4 percent (1.0 percent carbon dioxide) by volume,corrected to 600F (15.6 C) and 30.0 in Hg, when tested in accordance with the following Method ofTest.
Method of Test
A heater shall operate at normal input for at least 1 hour before being subjected to the following tests.
The heater shall be tested in an adequately sized room constructed so as to prevent infiltration of airThe heater shall be operated outside the room for 15 minutes at increased inlet test pressure.lmmediately following the warm-up period, the heater shall be placed in the room and continued inoperation with the door sealed.
This test shall be conducted at increased inlet test pressure.
A sample of the room atmosphere shall be withdrawn at the start of the test and analyzed for oxygen orcarbon dioxide and hvdrocarbon emissions. During the test, sufficient samples shall be withdrawn andanalyzed for oxygen or carbon dioxide to permit accurate determination of the end point of the testspecified.
A sample of the room atmosphere shall be withdrawn when the oxygen concentration in the roomreaches 19.4 percent (1.0 percent carbon dioxide) by volume corrected to 600F (15.6 0C) and 30.0 in Hg
Effective Ignition: The gas regulating valve is equipped with a regulating knob, which can accurately regulate and control the firepower.
High Quality: Made of high-quality stainless steel, durable and corrosion-resistant.
Safety Protection:This gas stove is equipped with a safety overpressure protection valve. When the pressure of the gas tank is too large, the protection device is activated and the gas cylinder is automatically disconnected to ensure safety.
Portable Design: The handle can be rotated, the width is moderate, it is not tight or scratches the hand, it is light and portable, and it is more convenient to take away. The safety valve is designed to avoid gas foreign exchange safety protection, and it is more assured to use.
Audited Supplier 
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