Dongbang Novoferm

Performance test of fire rated door

Fire Endurance up to 3hrs.
UL 10B, "Fire Tests of Door Assemblies", and is referred to as neutral pressure ANSI/UL 10C, "Positive Pressure Fire Tests of Door Assemblies", and is referred to as positive pressure. This is to measure the fire resistance of the door according to length of time to withstand the fire endurance test, once test specimen exposed to specified heat condition passes test in more than one criteria of performance standard. No flaming shall occur on the unexposed surface of a door assembly nor shall the specimen permit the passage gases sufficient to ignite the cotton pad. The movement of swinging doors shall not result in any portion of the edges adjacent to the door frame moving from the original position in a direction perpendicular to the plane of the door more than the thickness of the door during the entire classification period, nor more than 1 1/2 times the door thickness as a result of the Hose stream Test.

Hose Stream Test.
Immediately after and within 1-1/2 minutes of the end of the Fire Endurance Test , the test assembly is to be subjected to the impact, erosion, and cooling effects of a hose stream directed first at the bottom center and then at all parts of the exposed surface. The hose stream is to be applied with a smooth steady movement of the hose at a rate to ensure all parts of the test assembly are impacted by the hose stream. When all parts of the test assembly have been impacted by the hose stream, the application pattern is to be reversed.

Smoke and draft control

Doors that open onto corridors that are used for a means of egress may be required to have a smoke and draft control rating. Smoke and draft control assemblies are tested for both air leakage and fire resistance. The assembly is tested to determine how much air leaks around the door. The assembly is tested for air leakage with air that is at room temperature and air that has been heated to 400℉ The amount of air leakage must be below the standards that are set forth in the building code and / or NFPA 105.

Swing Test

Duration of the test shall be 250,000 cycles with latching for Level C doors ; 500,000 cycles with latching for Level B doors; and 1,000,000 cycles with latching for Level A doors. A general inspection of the door shall be made at 25,000 cycle intervals for the first 100,000 cycles and at 50,000 cycles thereafter. A mechanical counter or equivalent shall be used to record the cycles. Door shall not show any visual indication of metal fatigue, cracking or deformation at hardware provision cutouts or along form contours.

Twist Test

The twist test is applicable in evaluating door construction only. The deterioration of the door strength during the test, if any, shall be checked through a series of twist tests. These twist tests shall be performed before the cycle test begins and then at 25,000cycle intervals for the first 100,000 cycles and at 50,000 cycle intervals for the balance of the test. As a result of the twist test, the maximum deflection permitted shall not exceed 2 1/2" when loaded to 300 lb. for Level C. For Level B and Level A doors the maximum deflection shall not exceed 1 1/4" when loaded to 300lb. Dongbang Novoferm has the record satisfying the 1,000,000 requirement of Intertek.

Insulation Test

With test specimen being placed between heating box and low temperature room in accordance with KS F 2278, and everything having reached normal condition under specified temperature, value of heat transmission is calculated based on value of resistance of heat transmission, which is calculated by temperature of supplied heat to heating box. Heat transmission ratio should be below 1.8 W/m2K.

Air tightness

With test specimen being placed at test apparatus and quantity of air flow becoming normal under specified condition of differential pressure, quantity of airflow is calculated by measuring speed of airflow. Being a result of this test, quantity of airflow should be below grade II (2m³/h.m²).