ANSI Z21.24:2005 pdf download.Connectorsl For Gas Appliances.
the covering material on the connector Is observed and ceases 60 seconds or leis after removal of the Ignition flame, the flame Is to be reapplied at the same location for 1 minute Immediately after the flaming or glowing combustion stops. The ignition flame shall then be withdrawn and the duration of flaming or glowing combustion noted.
The duration of flaming or glowing combustion after withdrawal of the ignition flame shall not exceed 60 seconds nor shall any flame or glowing combustion travel to the end of the connector farthest from the point of application of the ignition flame.
1.8 Instructions
I.K.I
Instructions covering popec usage and installation shall be attached to each assembled appliance
connector. Instructions may be in a language(s) other than English when distributed in areas outside the
U.S. and Canada.
The instructions shall include, as a minimum, statements to the effect that:
a. The gas outlet shall be in the same room as the appliance and the connector must not be concealed
within or run through any wall, floor or partition.
b. The connector shall be of adequate length. Connectors shall not be joined together to achieve the required length.
c. The final assembly shall be tested for leaks. CAUTION: Matches, candles, open flame or other sources of ignition shall not be used for this purpose. Leak test solutions may cause corrosion — water rinse after test
d. Contact with foreign objects or wbstancas shall be avoided.
e. The connector shall not be used il kinked, twisted or bent smaller than 1/2 In (38.1 mm) internal diameter (I.e., approumately the diameter of a golf ball).
f. Connectors are designed for occasional movement after installation. Repeated bending, flexing or vibration must be avoided. Normal operation of a clothes dryer or similar appliance does not constitute extreme vibration or movement
g. Connectors are for use only on piping systems having fuel gas press*ires not In excess of ‘/ lb/in2 (3.5 kPa) (see 1.1.3).
h. This connector comphes with the Standard for Connectors for Gas Appliances, ANSI Z2 7.24 • CSA 6.10 (unless this is shown as a marking, see 1 .9.2-e).
I. The connector and fittings are designed for use only on the original installation and are not to be reused for another appliance or at another location.
j. Keep flare end of adaptor free of grease, oil and thread sealant. Connectors shall also bear a cautionary statement to the effect that:
CAUTION: CONNECTOR NUTS MUST NOT BE CONNECTED DIRECTLY TO PIPE THREADS. THIS CONNECTOR MUST BE INSTALLED WITH ADAPTERS PROVIDED.
2.4 Bending
The connector shall withstand 30 bends without leakage o damage to the tubing or fittings. Method of Test
One end of a 2 ft (610 mm) connector shall be securely attached to a fixed pipe to which an air supply system and manometer Is connected. The other end shall be closed gasLight. Two 2’/4 In (57.2 mm) diameter mandrets shall be placed, one at each side of the fixed end of the connector, in contact with the connector nut. The center of the mandrels shall be in line with the tubing end of the nut.
Air shall then be admitted to the connector until a pressure equivalent to 3 psi (20.7 kPa) Is obtained. The tubing shall be bent from the starting position A along the path shown by the dotted circle in Figure 3, Illustration of Bending Test, to the position indicated by “B. It shall then be bent back to the starting position and bent In the opposite direction to position ‘C. Each 180 degree (3.14 rad) bend and subsequent return to the starting position shall be counted as one cycle. This process shall be repeated until 30 cycles have been completed, the bending motion being applied uniformly at the rate of 5 cycles per minute.
Following completion of the 30 bends, the connector shall not leak. This test shall be applied to each nominal diameter, type and material of connector submitted.
Torsion
The connector shall withstand, without leakage or damage to the tubing or fittings. 15 applications of 90 degree (1.57 rad) twists in alternate directions.
Method of Test
One end of a 2 ft (610 mm) connector shall be securely attached to a rigid frame and loaded in tension as specified in Table V. Applied Load During Torsion Test,
An air pressure equivalent to 3 lb/in2 (20.7 kPa) shall be maintained in the system while the tubing is rotated 90 degrees (1.57 rad) at the lower fitting, in a plane perpendicular to the axis of the tubing, and then returned to the original position and rotated 90 degrees (1.57 red) in the opposite direction.
