www.desatech.com112108-01C 21INSTALLATIONContinuedIMPORTANT: The appliance and its individualshutoff valve must be disconnected from the gassupply piping system during any pressure testingof that system at test pressures in excess of 1/2psig. (3.5 kPa). The appliance must be isolatedfrom the gas supply piping system by closing itsindividual equipment shutoff valve during anypressure testing of the gas supply piping systemat test pressures equal to or less than 1/2 psig.(3.5 kPa).CAUTION: Do not kink flex-ible gas line.CAUTION: Compounds usedon threaded joints of gas pipingshall be resistant to the actionof Liquefied Petroleum (LP orpropane), and should be appliedlightly to ensure excess sealantdoes not enter the gas line.1. Install a sediment trap between the incominggas line and the gas control valve (see Figure40). The sediment trap should extend down thecenter of the pipe. Refer to your local codes.2. Prepare incoming gas line and check withlocal codes regarding the use of teflon tape.Complete your gas line installation by con-necting incoming gas line with flexible gasline. Secure tightly with a wrench, but DoNoT overTiGhTeN.3" Min.Side WallOf ApplianceIncoming 1/2" GasLine Permitted byLocal CodesFigure 40 - Sediment TrapSedimentTrap (NotSupplied)WARNING: All gas pipingand connections must be testedfor leaks after the installationis completed. After ensuringthat the gas valve is open, ap-ply a soap and water solutionto all connections and joints. Ifbubbles appear, leaks can be de-tected and corrected. Do not usean open flame for leak testingand do not operate any applianceif a leak is detected.WARNING: Improper installa-tion, adjustment, alteration, ser-vice, or maintenance can causeinjury or property damage. Referto this manual. For assistance oradditional information, consulta qualified installer, serviceagency, or gas supplier.GAS SUPPLY TESTINGNote: This section is intended as a guide forqualified service technicians installing gas to theappliance.CAUTION: Do not connectappliance before pressure test-ing gas piping. Damage to thegas valve may result and an un-safe condition may be caused.The millivolt system with a manual HI/LO ap-plies only to the DVF36TCR, DVF36TCRP,DVF36TCL and DVF36TCLP models. The gascontrol valve is accessible from the lower controlcompartment. Two pressure taps are provided onthe gas control valve for a pressure gauge connec-tion (see Figure 41, page 22).The electronic system applies to the DVF36TCRE,DVF36TCRPE, DVF36TCLE and DVF36TCLPEmodels (see Figure 42, page 22).