Working on a Gas Appliance
By Sylvan Tieger
Dangers of Gas
Unless you hold a valid Master Plumbers/Gasfitters License I would strongly suggest you don't even think of installing gas lines or a hot water heater. Do you know the actual BTU input of the H/W heater?
Are you using metalbestos (double wall flue piping)?
What is the specific gravity of the gas (fuel) in your area?
Can you safely install the T&P (Temperature & Pressure) relief valve to discharge in a code approved place?
DO YOU know how to size the T&P?
Can you check for spillage?
Do you know how to calculate the size of piping for the developed lenth of pipe and fittings for gas distribution?
Do you have enough "Free Air" for proper combustion?
Do you know how to size the free air opening?
Are you familiar with the ASME codes and the AGA as for proper installation?
What kind of material are you planning to use for gas distribution?
Are you planning on installing Drips legs? If So WHERE?
Do you know what working pressure you're working with?
Are you planning on installing a Cold water loop of a min of 27" to prevent molecules from crossing into the cold water line (heat moves to cold)?
What kind of dielectric fittings are you planning to use to prevent electrolic action between the tank and the piping?
Is the dip tube compatable with your water supply?
What provisions are you going to use for thermo expansion?
Where are you going to place your four fitting swing to allow for piping movement to prevent undue stress on your system?
How large is your existing Flue pipe? Will it be able to carry this appliance exhaust safely?
Is the area your planning on putting this possible bomb safe from dangerous vapors as PER AGA codes?
Of course you will use a W/H safety pan/tray to keep this tank elevated and to keep condensate dripping from destroying the surface it is installed on. What is the actual water temperature you plan on maintaining? Do you have a re circulation line also planned for YOUR installation? Will your insurance company pay a claim if this appliance causes a major fire if not installed professionally?
What kind of clevis hangers are you going to use? How far apart are you going to space them? Will you need riser Clamps? Are you going to use left and right nipples and coupling for your final hook up? Which APPROVED gas cock are you going to buy? Do you know what to check for to make sure you have positive combustion? Do you know how to check for Co? Do you know how many parts of Co (PPM)can kill you?
You have heavy insurance on your family and your home I hope. How many pounds of inches of Mercury are you going to test these lines?
WOULD you go to a doctor who was not licensed to operate on YOU?
IF you say NO then WHY would you want to risk your own life and members of your family and possibly burning down your home just to save a few dollars?
Thousands of people are maimed and die each year from faulty hook ups. INSPECTIONS are for your protection. Hiring a Licensed Master Plumber/ Gas Fitter is for your protection also.
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