The simple answer is to buy a water heater with a hydronic circuit which works independently from the “fired” tank. That would eliminate the loss of a drain valve. Most homes do not have insulated pipes, and pipe insulation makes a big difference in the containment of heat in the hot water piping.
Does a recirculating pump need a check valve?
Whenever a zone connects to the main piping in the recirculation system, a check valve is required. A proper design will have a flow control valve installed at the end of the zone to regulate how much water goes through that zone.
How do you drain a hot water heater with a recirculating pump?
Quote from the video:
Quote from Youtube video: Building you need to install a thing called a recirculation. Line now a recirculation. Line is a separate pipe that runs off the hot water line out at the farthest fixture.
Does a recirculating pump need a return line?
Not every domestic hot water recirculation system requires a return line. For residential and light commercial applications, there is another way to save water and maintain hot water at the last fixture.
Do I need an expansion tank with a recirculating pump?
The expansion tank is required for a recirculating (closed) loop. Connect the Thermal Expansion Tank (available at your local plumbing supplier) to the cold water supply line near the water heater. The expansion tank contains a bladder and an air charge.
Should a check valve be before or after pump?
On booster pump applications, a check valve can be placed on the suction or discharge of a centrifugal pump. If an additional check valve is required, it should be placed after the pressure tank to allow the pump and discharge pipe to remain pressurized.
Where should a check valve be installed?
The check valve must be installed at the outlet of the pump and in front of the outlet control valve for maintenance. Generally, the first outlet of the pump is the soft connection (shock absorber), the next is the check valve, and then the block valve.
Will a hot water recirculating pump keep pipes from freezing?
Install hot water recirculating pump.
Installing a hot water recirculation system helps ensure that you always have hot water in your taps and prevents pipes from freezing during the winter.
Are recirculating pumps bad for pipes?
High velocity due to an oversized pump is the number-one cause of pinhole leaks in recirculation pipes. In addition, when the city water company adds chlorine to the water, it becomes worse. Chlorine is a disinfectant added to water to kill bacteria. However, it is kryptonite to piping—all kinds of piping.
Where should a recirculating pump be installed?
There are two main components to an effective hot water recirculating system: the recirculating pump installed on the hot water discharge line of your home’s water heater, and the sensor valve installed on the supply lines of a faucet at the farthest distance from the water heater.
Can you add a recirculating pump to a tankless water heater?
Tankless heaters with recirculation pumps: The cost is $250 to $415 more than those without pumps. This is the best choice if you’re installing a new water heater. It saves the cost of pump installation. Separate recirculation pumps: If you have a tankless unit without a pump, one can be installed.
Do I really need an expansion tank on my water heater?
If your home has a “closed” plumbing system, then yes, you’ll need an expansion tank. You see, homes have either an open or a closed plumbing system. A closed plumbing system prevents water from flowing in the reverse direction (i.e., water won’t flow back into city lines once it enters your home’s pipes).
What pressure should my hot water expansion tank be set at?
between 50 and 60 PSI
The recommended water pressure is between 50 and 60 PSI. Thermal Expansion Tanks contain an air bladder which is pressurized with air, and expands and contracts to absorb the expanded water from the water heater. needed. Check the air pressure in the Expansion Tank using a tire gauge.
Can you put expansion tank on hot side?
Although expansion tanks can be installed on the hot side, we strongly recommend they be installed on the cold line, downstream of the shutoff valve.
Can you install expansion tank upside down?
Expansion tanks can be installed in any direction. Whether oriented uprightly, horizontally, or even upside down, the expansion tank will function properly without any adverse effects.
Can an expansion tank reduce water pressure?
A water heater expansion tank is simply a small tank that absorbs water into a bladder to reduce excess pressure in your water heater. In the past, when water expanded it wasn’t a problem, the extra few gallons would simply flow back into the city’s water supply.
Do you need an expansion tank with a pressure reducing valve?
An expansion tank is always highly recommended if you have a ‘closed-loop system’ caused by any kind of check valve or pressure regulating valve installed on your house’s water supply line. A common illustration compares having high water pressure in your home to having high blood pressure.
What is the difference between an expansion tank and a pressure tank?
The biggest difference between pressure tanks and expansion tanks is in where they’re used. Expansion tanks are installed above a water heater and help to protect it when hot water expands. Pressure tanks are installed near your well pump and help to protect and extend its lifespan.
Can PEX be used for expansion tank?
Cut a piece of PEX to run between the expansion tank and the tee-fitting that you inserted in the hot water tank cold water supply line. If you have other fittings between the two, you will need to cut pieces of PEX to connect those as well.
Can you use PEX for hot water heater?
Can I Connect PEX to My Water Heater? PEX can’t be directly connected to a water heater. First extend a pipe 18 in. from your water heater and connect the PEX to the pipe.
Can I use PEX for water heater relief valve?
Can you use PEX as discharge pipe at water heater temperature and pressure relief (TPR) valve? Yes. PEX (cross-linked-polyethylene) is rated for water distribution by the International Residenital Code (IRC) at Table P2906.
