Before you install a gas water heater, make sure that your room has adequate ventilation. A byproduct of combustion (Carbon monoxide) can be dangerous when inadequate venting allows it to build up in the home. Discuss this with a professional if you are in doubt.
Preparation to install a Gas Water Heater
Prepare common plumbing tools and pipe joint compound approved for fuel gas. In anticipation of a leaking pipe, you also need kid’s soap bubbles or hand dishwashing soap mixed with water. Most codes require the water heater to be installed in a metal drain pan. See the installation instructions for information about sizing the drain pan and other installation details.
 |
| plumbing tools |
If you use copper pipe, consider an installation kit with compression fittings without soldering. While for plastic pipes, you’ll need connectors / fittings for the specific type of plastic pipes used in your home. Read the installation instructions for the new connectors before cutting the existing water pipes.
Turn the main gas supply valve and the gas control knob on the old water heater to ‘OFF’. Open a hot-water faucet, and let the hot water run until cool. Allow the old water heater and vent pipe to cool.
Steps to Install a New Gas Water Heater
1. Drain Your Water Heater
Attach the hose to the drain valve. Turn off the cold water supply to the water heater and open a hot water faucet and drain valve. After draining of the water heater is finish, disconnect the vent pipe from the draft hood. Inspect the old vent pipes for some problems like obstructions, corrosion, leaks or other damage. Repair or replace if necessary. We remind you again, Gas water heaters must have free access to adequate combustion air and must be properly vented. Read the installation instructions, they must be followed for safe operation.
 |
| Drain water heater |
Disconnect the gas line at the union. Remove the gas pipe from the old water heater, Save the union, too. Next, remove the water lines and the old water heater. Install the new water heater (in a metal drain pan).
2. Temperature and Release Valve
In the plumbing system, most of the homes have check valves and now need a thermal expansion tank installed near the water heater. The expansion tank is attached to the cold-water inlet line. To operate properly, the expansion tank must be pressurized with air. More detail about it, can be found in the expansion tank’s instructions.
Gas Water Heater has an important safety device, that is the temperature and pressure relief valve (T&P). When the water temperature or pressure is too high, this valve will opens to relieve pressure. Don’t reuse the old T&P valve and use the new one.
The T&P discharge pipe should be terminated near a floor drain with an air gap of no more than six inches between the end of the discharge pipe and the drain. Some localities require terminating the T&P discharge pipe outside. In all cases, follow the codes for your location but In cold climates, we recommend using a floor drain.
Warning : Don't plug or cap the T&P discharge pipe.
3. Install Hot- and Cold-Water Lines
Install the hot- and cold-water lines. The water heater inlet and outlet connections contain nonmetallic parts. Don't solder the pipe directly to these connections. Instead, solder threaded adapters to short pieces of pipe so that soldering is done one foot or so from the water heater connections. Open the cold water supply valve and fill the tank.
Open a nearby hot water faucet slowly. Let the hot water run full stream for three minutes to ensure the tank is completely full. The tank must be completely full before lighting the pilot.
Gas water heaters produce condensation the first time they're started. Suara tetesan mungkin akan terdengar atau you may even see a small puddle. Condensation is normal and isn't a leak. Condensation should go away when the water heater reaches its normal operating temperature. Check the water connections for leaks. Leaks actually rarely occurs in the tank, most often leaks occur at the inlet or outlet water connections.
4. Check for Leaks
Connect the vent pipe to the water heater’s new draft hood (never use the old draft hood). Use sheet metal screws. Install the gas pipe using pipe joint compound approved for fuel gas on all threaded connections. Keep the pipe joint compound from getting inside the gas line or gas control valve. If you choose to use flexible gas line connector, this is slightly different, follow the installation instructions for flexible connectors (may don’t need pipe joint compound). Reconnect the gas line union.
 |
| Check for Leaks |
You can check gas leaks by using leak detection solution or a commercial gas if you want a bit of frugality, you can take advantage of children's soap bubbles or hand dishwashing soap (mix one part soap to 15 parts water). Don't use an open flame to check for gas leaks.
5. Turn Gas Supply On
Turn the gas supply valve on. Brush soap solution (more is better) on all gas line connections and look for bubbles to check for leaks. Gas is under low pressure, and it may take some time for bubbles to appear. If you see any bubbles, correct the leak and retest.
Review the checklist that came with the installation instructions, and make corrections or repairs as necessary. It’s important that every step has been successfully completed before lighting the pilot.
6. Light the Pilot
Read and follow the lighting instructions on the water heater’s label. It may take some efforts to light the pilot, because the water heater is new and there’s air in the gas line.
 |
| light the pilot |
This Video About How to Install a Gas Water Heater
source
No comments:
Post a Comment