Filter
Top Products
Instructions for Installation (cont'd)
Gas Piping (cont'd)
GAS PIPING WITH
•,WARNING FLEXIBLE CONNECTOR
The appliance and its individual shutoff valve
must be disconnected from the gas supply piping
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 [_
shutoff valve during any pressure testing of the MANUAL
gas supply piping system at test pressures equal SHUTOFF
or less than 1/2 pound per square inch (3.5kPa). VALVE
ELEX,BLEGASCONNECrOR
1 _,WARNING I LABELEDASCOMPLYING
WITH ANSI STANDARDS
I Use pipe joint compound or teflon tape marked as I GROUNDJOINT
I being resistant to the action of petroleum [Propane I UNION(OPTIONAL)
I (L'R)]gases" I
SEDIMENT TRAP
3" MIN. DRIP LEG GAS
A sediment trap shall be installed as close to the inlet of the (SEDIMENT CONTROL
TRAP) CAP
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- GAS PIPING WITH ALL BLACK IRON PIPE TO
tion shown below. GAS CONTROL
Connecting the gas piping to the gas control valve of the
GAS SUPPLY PIPING
water heater can be accomplished by either of the two meth-
ods shown.
MANUAL t
SHUTOFF
_WARNING VALVE
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
line, a drip leg (sometimes called a sediment trap) GROUNDJOINT
must be incorporated in the piping. The drip leg UNION
must be readily accessible. Install in accordance mACK PIPE_ GAS
with the "Gas Piping" section. Refer to the latest _ CONTROL
edition of the National Fuel Gas Code, ANSI Z223.1 VALVE
also referred to as NFPA 54. DRIPLEG
(SEDIMENT
3" MIN. TRAP)
CAP
17