Tankless Water Heater is a great choice for homeowners when they replace old water heaters. Like a tank type heater, tankless water heater uses either natural gas or electricity. If your water heater uses gas as a fuel source, then you have to provide venting pipe for the exhaust gas.
Things You'll Need to Install Venting for Water Heater
- Vent pipe assembly
- Screws
- Drill
- Pencil
- Metal wall thimble
- 1-inch spade bit
- Reciprocating saw
- Safety goggles
- Silicone caulk
- Flange thimble
1. Take the vent pipe, assemble it and dry-fit it on the exhaust port on top of your tankless heating. Determine the location close to the exterior wall and mark the spot on the wall where the center of the venting pipe in contact with the wall. A vent pipe must venting the exhaust gas to an outside location and must be vented downward to prevent elements such as rain water from entering the pipe.
2. Remove the vent pipe from the top of the heating unit.
3. Make a small pilot hole
by drill the wall
to the outside.
4. Go
outside to the pilot hole. Hold the metal wall thimble against the exterior
wall, this
step as
a reference to create a venting
hole in the wall.
5. Cut a hole in the wall for ventilation using a saw.
If you are
having trouble, you can start by drilling a 1-inch hole
with a spade bit near the top of the circle you traced.
6. Remove any strips of siding and Hold the flange thimble against the wall.
7. Apply a thick bead of silicone caulk
around the edge of the flange, then slide it into the hole in the wall. Screw
the flange to the wall through the holes around the perimeter of the flange,
and cover the screws with the silicone caulk.
8. Go inside and connect the flange to the
vent pipe.
9. You can re-install any strips of siding
that you had to remove.
source 1 : ehow
source 2 : diynetwork
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