The advantages of a gas tankless water heater system over a conventional water heating system are enough to make many homeowners consider making the switch.
While installing a gas tankless system may seem overwhelming, the truth is that the process can be narrowed down into a few steps.
This article breaks down the procedure into 6 easy to follow steps.
Tools Required for Installation
Before getting started on ANY project, it is critical to make sure you have the right tools for the job.
Tools needed for the installation of a tankless water heating system include:
- An adjustable wrench
- An electric drill
- A spade bit
- A hacksaw
- A reciprocating saw
- A propane torch
- Copper pipe (for water)
- Black pipe or Flexible pipe (for gas)
- The heater unit itself
- Sealing caulk
- 2×4 lumber
Step 1: Turn off all Power, Gas and Water Lines
The most important element of any project is safety.
Thus, the first thing you need to do is ensure that the gas and water lines are shut off, as well as any necessary electrical circuits.
Always refer to manufacturer’s manuals for full instruction on safety procedures.
Step 2: Construct Platform for new Unit
Using 2×4-wood, construct the housing into which the unit will be placed.
By constructing this first you will better be able to measure your gas and water lines for installation.
The platform should allow a 4-inch space between the unit and the wall.
Once the platform is constructed, attach the unit to it.
Step 3: Install Gas Line
Assuming your new system requires gas, the first thing needed is a new gas line to supply the unit.
Using either black or flexible pipe, create a supply route running from where your heater will be to your existing gas line.
Integrate this new line into the existing gas line with a tee and valve.
Step 4: Install Water Line
Like the gas line, the new water lines need to run from the location of the new unit to the existing water lines.
Lay copper pipe (recommended) against the wall, securing it with bell hangers.
After cleaning the connection area thoroughly, apply flux, connect pipes, and solder together.
Step 5: Attach all Lines to the Unit
Refer to the unit’s installation manual for directions on attaching sediment trap and shutoff valve.
After completing those steps, attach the gas line to the valve.
Then connect the water line.
Turn on the gas line to assure a proper connection, checking for any signs of leaks.
Turn off the gas when the check is complete.
Step 6: Vent Installation
Attach the connector to the ventilation shaft of the unit, using heat resistant sealant and a hose clamp.
Attach section of ventilation pipe with recommended retaining ring.
Place elbow joint on attached pipe, ensuring it faces the proposed location of the ventilation hole in the wall.
Drill a hole in the wall, from inside to outside, for the ventilation pipe.
Using the spade bit, drill a 1-inch hole in the wall from the outside, using the existing hole as a guide.
Smooth out the hole with the reciprocating saw for proper fitting of pipe.
Connect pipe to ventilation hood, following manufacturer’s instructions.
After completing these 6 steps you are ready to turn the unit on.
Plug in the water heater, turn on gas and water lines, and switch on the circuit for power.
Again, always make sure that safety measures are taken.
Wear proper protection, including goggles, and ALWAYS refer to manufacturer’s manuals. Be smart, and be safe.
But just remember that if you decide to install your tankless water heater all by yourself then it could make the manufacturer warranty void.
For this reason, be careful in regards to what you decide to do.