Desa GVB35N Owner's Operation And Installation Manual

Desa GVB35N Owner's Operation And Installation Manual Manual pdf 11 page image

11100353INSTALLINGHEATERContinuedCONNECTING TO GAS SUPPLYWARNINGA qualified service person must connect heater to gassupply. Follow all local codes.IMPORTANT: Check gas line pressure at gas meter before connecting heater to gasline. Gas line pressure must be no greater than 14 inches of water. If gas linepressure is higher, heater regulator damage could occur.Gas MeterFigure 6 - Connecting Heater to Utility Gas LineCAUTIONUse only new, black iron or steel pipe. Copper tubingmay be used in certain areas. Check your local codes.Use pipe that is 1/2" in diameter or greater to allowproper gas volume to heater. If pipe is too small, undueloss of pressure will occur.The gas supply line to your heater must be 1/2 inch in diameter or larger. If thesupply line branches to serve two or more heaters, the line from the branch back tothe gas meter must be doubled or tripled, etc., in size (depending upon the numberof heaters).Example for 1/2 inch diameter supply line: If the supply line branchesto serve two heaters, the line diameter from the branch back to the gas meter mustbe at least 1 inch. If three heaters are served, the line diameter from the branchback to the gas meter must be at least 1 1/2 inches.Note: If gas supply line total length exceeds forty feet, use a larger diameter pipe.Use pipe that is the next size larger than the heater control valve fitting.WARNINGNever connect heater to private (non-utility) gas wells.This gas is commonly known as well-head gas.Continued