Operating instructions

Instructions for Installation (cont'd)
Gas Piping (cont'd)
_,WARNING GAS PIPING WITH
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 CI
square inch (3.5kPa).
• The appliance must be isolated from the gas sup-
ply piping system by closing its individual manual i_1
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
FLEXIBLE GAS CONNECTOR
AWARNING LABELEDASCOMPLYING
WITH ANSI STANDARDS
Use pipe joint compound or teflon tape marked as
being resistant to the action of petroleum [Propane I GROUNDJOINT
(L.R)]gases. I UNION
(OPTIONAL)
SEDIMENT TRAP
A sediment trap shall be installed as close to the inlet of the 3" MIN. TRAP) GAS
water heater as practical at the time of water heater instaUa- CONTROL
tion. The sediment trap shall be either a tee fitting with a CAP VALVE
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 of installa-
tion shown. GAS PIPING WITH ALL BLACK IRON PIPE TO
GAS CONTROL
Connecting the gas piping to the gas control valve of the
water heater can be accomplished by either of the two meth- GASSUPPLYPIPING
ods shown.
MANUAL _
_IWARNING SHUTOFF
Contaminants in the gas lines may cause improper VALVE
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 toreign material in the gas suppl_(
line, a drip leg (sometimes called a sediment trap)
must be incorporated in the piping, The drip leg GROUNDJOINT
must be readily accessible, Install in accordance UNION
with the "Gas Piping" section. Refer to the current 8LACKPIPE]_ GAS
edition of the National Fuel Gas Code, ANSI Z223.1 CONTROL
also referred to as NFPA 54. VALVE
_- DRIP LEG L_JCJ
(SEDIMENT
3" MIN. TRAP)
2O