Installation Instructions (cont'd)
Gas Piping
I | AWARNING | ] |
| Make sure the gassure | type listed on the I |
model rating plate. The inlet gaspressuremust not exceed 14 incheswater column 'Apoundper squareinch(3.5kPa)]. I The minimum inlet gaspressurelistedon the model rating I
plate isfor the purposeof input adjustment.
AWARNING, J
If the gascontrolvalveissubjectedto pressuresexceeding'A pound per square inch(3.5kPa), the damage to the gas con- trol valvecouldresult in a fire or expiosionfrom leakingga_ J
AWARNING
If the main gasline shutoffservingall gasappliancesis used, alsotorn "off" the gasat each appliance.Leaveall gasappli-
ancesshutoff until dm water heater installationiscomplete.
A gas line of sufficient size must be run to the water heater. Consult the latest edition of National Fuel Gas Code ANSI
Z223.1, also referred to as NFPA54 and the gas company con-
cerning pipe size.
There must be:
•A readily accessible manual shut off valve in the gas supply line serving the water heater, and
•A drip leg (sediment trap) ahead of the gas control valve to help prevent dirt and foreign materials from entering the gas control
ValVe.
•A flexible gas connector or a ground joint union between the shutoffvalve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before li_hting the water heater. Use a soapy water solution, not a match or open
flame. Rinse offsoapy solution and wipe dry.
Standard Models are for installation up to 3,300 feet above sea level.
High Altitude Models are for installation from 3,300 to 5,500 feet above sea level.
Ifa standard model is installed above 3,300 feet or a high altitude model is installed above 5,500 feet, the input rating must be reduced at the rate of 4 percent for each 1,000 feet above sea level. Contact your local Sears Service Center or gas utility for further information.
The appliance and its gas connection must
AWARNINGbe leak tested
beforeplacingthe appliancein operation.
AWARNING
•The applianceand its individualshutoffvalvemust be discon- nectedfrom the gassupplypipingsystemduringanypressure testing of the gassystem at test pressuresin excessof I/2 poundper squareinch(3.5kPa).
•The appliancemust be isolatedfrom the gassupplypipingsys- tem by closingits individualmanualshutoffvalveduringany pressuretestingof the gassupplypipingsystemat test pres- sures equalor lessthan I/2 poundper squareinch(3.5kPa).
f | AWARNING | J |
| Use pipe joint €omp_tape | marked as beingI |
| resistantto the actionof petroleum [Propane(LR)] gese_ 1 | |
SEDIMENT TRAP
A sediment trap shall be installed as close to the inlet of the water heater as practical at the time of water heater installation. The sediment trap shall be either a tee fitting with a capped nip- ple in the bottom outlet or other device recognized as an effec-
tive sediment trap. If a tee fitting is used, it shall be installed in conformance with one of the methods of installation shown
below.
Connecting the gas piping to the gas control valve of the water heater can be accomplished by either of the two methods shown.
GAS PIPING WITH
FLEXIBLE CONNECTOR
MANUAL _('AS SUPPLY PIPING
SHUTOFF
VALVE
FLEXIBLE G_S CONNECTOR
LABELED AS COMPLYING
WITH ANSI STANDARDS
GROUND
UNION (Optional)
GAS
CONTROL
VALVE
DRIP LEG (Sediment trap)
CAP
GAS PIPING WITH ALL BLACK IRON
PIPE TO GAS CONTROL
SHUTOFF
VALVE
MANUAL_;ASSUPPLYPIING
BLACK PIPE
GROUND lOIN1
UNION
GAS
CONTROL
VALVE
T
6" DRIP LEG
(Sediment t_ap)
CAP
&WARNING
Contaminants in the gaslinesmay causeimproper operation of the gascontrol valvethat may result in fire or explosion. Beforeattachingthe gasline be sure that all gaspipe isclean on the inside.To trap any dirt or foreign material in the gas supply line, a drip leg (sometimes called a sediment trap) must be incorporated in the piping.The drip leg must be
readily accessible.Installin accordancewith the "Gas Piping" section.Refer to the latest edition of the National Fuel Gas
Code,ANSI Z223.1,also referred to as NFPA 54.
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