Instructions for Installation (cont'd)
Gas Piping | (cont'd) |
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| GAS PIPING WITH |
| •,WARNING | FLEXIBLE CONNECTOR |
The appliance and its individual shutoff valve |
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must be disconnected from the gas supply piping |
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system during | any pressure testing of the gas sys- | GASSUPPLYPIPING |
tem at test pressures in excess of 1/2 pound per square inch (3.SkPa).
•The appliance must be isolated from the gas sup-
ply piping | system by closing its individual | manual | [_ |
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shutoff valve during any | pressure testing | of the | MANUAL |
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gas supply |
| piping system | at test | pressures equal | SHUTOFF |
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or less than | 1/2 pound per square | inch (3.5kPa). | VALVE |
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| ELEX,GBLASCOENNECrOR | |
1 |
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| WITH ANSI STANDARDS | ||
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| LABELEASCOMDPLYING | |||||
I Use pipe joint | compound or teflon | tape | marked as I | GROUNDJOINT |
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I being resistant to the action of petroleum | [Propane I | UNION(OPTIONAL) |
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I (L'R)]gases" |
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SEDIMENT | TRAP |
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A sediment trap shall be installed |
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| 3" MIN. | DRIP LEG | GAS | ||
as close | to the inlet of the |
| (SEDIMENT | CONTROL | |||||
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| TRAP) CAP |
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water heater as practical at the time of water heater instaUa~
tion. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap. Ira tee fitting is used, it shall be
installed in conformance with one of the methods ofinstaUa- tion shown below.
Connecting the gas piping to the gas control valve of the water heater can be accomplished by either of the two meth- ods shown.
GAS PIPING WITH ALL BLACK IRON PIPE TO
GAS CONTROL
GAS SUPPLY PIPING
SHUTOFF
_WARNINGVALVE
MANUAL t
Contaminants in the gas lines may cause improper
operation of the gas control valve.that may result =in fire or explosion. Before attaching the gas line be sure that all gas pipe is clean on the inside. To
trap any dirt or foreign material in the gas supply |
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line, | a drip leg | (sometimes called | a sediment trap) | GROUNDJOINT |
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must | be incorporated | in the | piping. | The drip leg | UNION |
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with the "Gas Piping" | section. Refer | to the latest |
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edition of the National | Fuel Gas Code, | ANSI Z223.1 |
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must | be readily | accessible. | Install | in | accordance |
| mACK PIPE _ | GAS | |
also referred to as NFPA 54. |
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| DRIPLEG |
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| (SEDIMENT |
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| 3" MIN. | TRAP) |
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CAP
17
