How to install a boiler under the sink Bashny.Net

Permanent or backup source of hot water in the kitchen can serve as a water heater, which is installed under the sink — there's always room, and he did not prevent anything. What boiler to choose and how to install it properly?

Types of water heaters for installation under the sinkas the area under the sink is still limited, set there, or cumulative of small water heater with a volume of 10-25 l or running. Heating in them is carried out by open type heaters or heating elements. Gas boilers, as a rule, greater performance and are made only for standard wall mounting.





 

Different heaters for installation under the sink the location of the inlet pipe — top. When buying a heater it is necessary to pay attention to it, otherwise the device for installation over the sink that is installed under the sink, will run poorly and not for long.

 

So which water heater is better — storage (capacitive) or flow (discharge)storage heaters occupy more space and are more expensive, but power consumption is lower than in running (up to 3 kW), and they can give more hot water per minute.





Water heater

Since tankless water heater has a relatively high domestic output — up to 8 kW, you need to make sure that the mains in the apartment or house is able to provide without a permanent "knock-out" machines. If the heater is only at the time of the heating system crimping pliers in the summer when the hot water turned off for 2 weeks, then heat 2 l/min require power less than 3.6 kW. Cold "winter" water will not work to heat up in this volume even up to 30 °C. For year round consumption more suitable or capacitive water heater or instantaneous high power.

When you first turn on the storage device will take some time for hot water flow immediately to heat from 1.8 to 4 liters per minute. They heat the entire water flow, cumulative as warm incoming cold water, which is mixed in the tank with hot water when its expenditure and after some time the temperature of the water in the faucet begins to drop.



Tankless water heater

That is, both types of water heaters, there are both advantages and disadvantages, and the choice in favor of one of them is only a matter of consumer preferences.

But for a country house, in the absence of trunk water, essential non-pressure water heater, which comes with a special mixer with a small diameter for a stronger jet. To create pressure it is equipped with a hydraulic pressure switch. If in winter the cottage is not in use, it even can be removed, and again in the spring to install, so installation is simple.

Pipe fittings for the installation of the water heaterLet's have a little stop on the pipe fittings required for the piping of the boiler.

 Security groupTo protect the water heater from the hydraulic overload of the network manufacturers recommend to install the valves — a security group that has the pressure relief device. If the pressure exceeds 4.5 ATM, in front of a group safety need to install a pressure reducer or pressure reducing valve.



Security group for water heater

For small capacitive water heaters of this element is desirable but not mandatory.

Reverse safety valvea Safety valve designed to ensure complete filling the tank with water, otherwise the heater can strip and burn. Drain water from the tank is possible when the line starts to fall the pressure, and the valve will keep the water in the tank. The second function of this valve is draining water from the tank, for example, for repair. The third function — protection against rupture of the tank. Sometimes thermostats fail, the water continues to heat up, the pressure in the tank to rise. If in this period, there is a selection of water, the tank may vent under the action of boiling water and steam. Fortunately, this happens rarely, but it is better to take security measures, the more that the price of this valve is not comparable with the possible consequences of the accident.



Safety valve

If the valve is not installed or is inoperable, you immediately know — from the cold tap is leaking hot water. The bowl will be hot water, and you will pay for consumed for this heating power. It is installed on the cold water inlet to the water heater tank type.

Tip! The arrow on the housing shows the direction of flow of water. When installing the boiler under the sink the flow direction of the cold water down, and therefore, the drainage outlet is directed upwards. Prevent water from dripping on the floor, set it under the drip funnel with a tap drain to the sewer or slip into the nipple pipe of the appropriate diameter and put in a container.

Other valves designed to shut off hot and cold water on each of the branches of the aqueduct.

Attention! Installed under the sink water heater is hidden from view, and the leak can be noticed immediately. Therefore, all the water connections must be qualitatively summarized, germetizirujut, for example, linen ribbons, FUM-tape with a special paste.

The heater installation under sinkInstallation different types of the heaters is slightly different. Consider the wiring diagram and the installation procedure for various water structures.



Installation of non-pressure water heaterthe easiest way to install non-pressure boilers. They cannot be connected to a conventional mixer, connect directly to the main pipeline, as the network pressure device is not intended — can tear.

Special mixer for this boiler has two valves — one controls the temperature (by mixing with the cold), other expense. In this system, the mixer performs the function of a security group: overlaps the cold water inlet to the heater, and dumps surplus water arising from its expansion due to the heat.

Usually when buying such a heater the kit includes tubing and shut-off valves that are installed at the inlet and outlet of the tank. Reverse relief valve in this case can not be mounted (because there is no risk of a pressure jump) or to replace just the check valve. Outdoor heater is easy to install on the floor and wall need to be mounted on the supplied mounting brackets or other mounts. Then the tubes are connected according to the scheme.

Unpressurized tankless water heater is mounted on the same principle. Connect the heater to the mains supply only after filling the heater with water.

Mounting pressure the water heaterin Advance to make sure there next to the heater outlet with a grounding circuit. If the heater wall, mark on wall the point of attachment, drill the holes for fasteners, attach the bracket and hang the heater. Outdoor heater to the wall can not be fixed.





 

Begin preparation of the heater. To do this, perform the following:

 

For cold water (blue marking on the fitting of the tank) mounted opposite the safety valve. The direction of the water valve marked with an arrow. Both fitting screw tank shut-off valves. On the cold water shut-off valve is installed directly on the valve. Attention! Too to pull the threads when installing do not need, you can pick!

Connected to valves and flexible hoses (may be included) or via adapters plastic (polypropylene) tube with a diameter of 16-20 mm for connection to the water supply. The latter method is more preferable as it is more reliable and, in addition, a larger pipe diameter results in less flow resistance and better water flow. Further work with the water — mountable tees to the point of demand after locking taps (which are on the pipes enter into the apartment):

• on the cold water feed heater;
• hot water to switch from the primary hot water on standby.

Connect the hoses (tubes) running from the fuel tank with the appropriate pipes for hot and cold water. Check that it is connected with cold cold and hot hot.

To the drain pipe of the safety valve, connect a drip or a siphon to drain into the sewer or a thin tube to drain into a separate container.

Before turning on the heater, shut off the hot water tap on the highway. Electricity connect only after filling the tank with water.

Installation of pressure fluid heaterInstallation tankless water heater similar to the heater accumulative. The difference is the lack of reciprocal safety valve in the absence of the tank. For some models it is recommended that the supply of cold water to set the filter of rough or fine cleaning and even a water softener. The device is attached to the wall, cuts the pipes to shut off valves in line hot and cold water supply network after the valves and connected to the mains.

The majority of flow heaters, particularly high power is not supplied power adapter. It is assumed that the connecting equipment should go through a dedicated line directly to an individual machine in the switchboard. Line must be grounded with a protection device against short-circuit. Cable size is selected depending on the power flow of the boiler. published

 

 

P. S. And remember, just changing your mind — together we change the world! ©

 

Source: www.rmnt.ru/story/water/1176167.htm