How to Install a Tankless Hot Water Heater

Step-by-Step Guide

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   Step 1: CAUTION: Tankless water heaters generally require larger diameter gas supply lines

   Please take these things into consideration before you decide to DIY.
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   Step 2: higher voltage power supply (if contemplating electric on-demand)

   This will allow for simple, easy de-liming maintenance process in the future. ,, You will probably have some water left in the line even though your main has been shut off.
   
   Place a bucket underneath water bib to catch any spills. , For and electric water heater, simply unplug the appliance from the wall outlet. ,,,,,, Typically tankless water heaters requires larger flue or special stainless steel flue. ,, If your water heater uses electricity, plug it in to the wall.* If your water heater is gas, you will need to hook up a gas supply line from the stub at the wall to the new water heater.
   
   Open the valve so that the handle is in the same direction as the line. ,, All that work was well worth it!
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   Step 3: dedicated - special stainless steel flue (known as Category II

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   Step 4: III or IV) or larger diameter exhaust system.

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   Step 5: It is highly recommended that you use special union connector sets for the water supply which employ bypass capability.

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   Step 6: Turn off main incoming water line to house.

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   Step 7: Disconnect supply line from old water heater.

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   Step 8: Disconnect heat source from old water heater as follows: for gas

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   Step 9: (propane) make sure the supply valve is closed (this is usually determined by the direction of the handle to the valve sitting either in the same direction as the line "open"

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    Step 10: opposite the direction of the line "closed").

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    Step 11: Once you have completely disconnected the old water heater you must remove it from it's current parking space and make sure to dispose of it according to the laws in the area you live in.

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    Step 12: Remove your new tankless water heater from the carton and place all hardware and instructional material close at hand.

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    Step 13: Determine the location best suited for this appliance and make sure you have allowed for the proper clearances around it to comply with all state and local building codes.

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    Step 14: Mount tankless heater on wall according to manufacturers instructions

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    Step 15: making sure that you have appropriately supported its weight.

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    Step 16: Now you're ready to hook up all the connections.

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    Step 17: If you have gas

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    Step 18: install ventilation ducting.

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    Step 19: Begin with the supply line (water line).

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    Step 20: Next should be the heat source.

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    Step 21: Following manufacturers directions

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    Step 22: light the pilot on the gas water heater.

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    Step 23: Now go to your favorite shower location and enjoy an endless stream of hot water.

Detailed Guide

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