Installation - Williams 5001922 Owner's Manual

PIPING THE GAS TO THE HEATER
State and local authorities have established codes regulating the installation of gas burning equipment. Consult your
gas supplier or gas company for complete information. In the absence of local codes, all aspects of the installation must
comply with the national fuel gas coda ANSI Z223.1. In Canada: Follow CAN/CGA-B149.1(2) Canadian Standard.
A. Use 1/2-inch pipe or semi-rigid tubing for natural and liquefied petroleum gases. DO NOT USE FLEXIBLE HOSE.
Appliance connectors of corrugated metal tubing and fittings that are listed by a nationally recognized testing agen-
cy may be used if accepted by the local code authorities. FOLLOW THE MANUFACTURERS INSTALLATION
INSTRUCTIONS. This type of connector may only be installed in the room where the heater is located.
B. A manual shut-off valve and union must be installed in the gas supply line just ahead of the connection to the heater.
The manual valve must include a lie-inch NPT plugged tapping accessable for connection of a test gauge.
C. Unions in the gas supply lines shall be of the ground joint type. Compounds used on threaded pipe joints must be
resistant to the action of liquefied petroleum gases.
WARNING:
WHEN CONNECTING FIELD PIPING, USE A SECOND WRENCH TO KEEP THE HEATER VALVE FROM TURNING.
SUPPORT FIELD PIPING PROPERLY, STRESS AND OVERTIGHTENING COULD DAMAGE THE GAS VALVE AND
RESULT IN DANGEROUS GAS LEAKS WHICH CAN CAUSE DANGEROUS CONDITIONS INCLUDING PROPER-
TY DAMAGE, BODILY INJURY, AND EVEN DEATH.
D. A dripleg Fig. 2 should be installed to constitute a trap to catch any condensate that may be in the gas. The dripleg
should be readily accessible for cleaning.
E. The heater must be disconnected from the gas supply system and from the heater individual shut-off valve when
the system is tested at a pressure in excess of 1/2 PSIG.
F. IMPORTANT."CHECK ALL FACTORY AND FIELD PIPE JOINTS FOR GAS LEAKS BEFORE AND AFTER LIGHTING
THE HEATER. USE A SOAP SOLUTION. NEVER USE A MATCH OR OPEN FLAME. CORRECT ANY LEAK, NO
MA'I-rER HOW SMALL.
G. IMPORTANT_ PIPING SUPPLY SHALL BE SUPPORTED TO PREVENT SAGGING DAMAGE TO CONTROLS AND
HAZARDOUS GAS LEAKS. TO PREVENT FREEZING WHERE THE SUPPLY PIPE IS EXPOSED TO COLD AIR,
WRAP THE PIPE OR RUN IT UNDERGROUND.
DROP
I 1 PIPED (;_OUN0 JOINT
I I GAS u.loN
_ PIPED
_INI_UM__IRI_PuG_J,n
176 _ mini _ NIPPLE GAS
_UAL SHUt 0f_ SUPPLY
tEE
Nippt E
• ],_ I;6 Z n._,l
s
'i ( ,°2
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I I _<. cAP
MINlP,¢UM
,_ALt 81[NO_ 4_ Ml_Zat,i C IUHlld G S.OULD 0[ SMOOIH
/_ CAUIION SMUT OC, rt_. MA_ ._._ _UOI_.=V BCFOR_ N(MOVII_G (NO CAP
rO P_EVI_N_ Ga_ fROM _ _LL_tlC ! .[ WORK Ag_A _T FON GAS L_AK
IMPORTANT
All piping must comply with local codes and ordinances
or with the National Fuel Gas Code (ANSI Z223.1 NFPA
No. 54), whichever applies. (In Canada: CAN/CGA B149.)
PROPER PIPING PR_rlC_
IMP(RF[CT CONTRO L USI_ MOO(RAT( AMOUNT OF DOPE
THR£AD P_P_ R_T L_N_T_ L_V_ _ _O TH_£AD$ _R_ _
TOP
LEFT
SIDE
350 MODEL SERIES SHOWN
Fig. 2
Rg. 3
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