FI99232C - Procedure for mounting a building's utility water pipes - Google Patents

Description

99232

Method for installing hot water pipes in a building

The invention relates to a method for installing domestic hot water pipes, in which method cold and hot water pipes are led from the cold and hot water distribution points to the desired operating points.

Water damage caused by hot water pipes already exceeds fire damage in the insurance companies' indemnity amounts. Many of these are caused by corrosion of 10 metal pipes installed inside the structures. Depending on the quality of the hot water, problems can start after as little as five years of use.

The problem with renewing the piping is the difficulty of placement, because for aesthetic reasons the pipes are not desired to be visible. As before, placement inside structures should be avoided as far as possible, as the costs and disadvantages of demolition work for the use of a building are already known to be significant. However, if the pipes are installed in their former places, then one must be aware of the fact that the pipes may again have to be renewed sooner or later in the same costly, cumbersome and uncertain manner.

When considering new installation methods, consideration must be given to whether they will cause other problems, even if the former drawbacks may be eliminated.

25 Water pipes must not be installed in places where they may be exposed to unexpected mechanical stresses. They must also be protected e.g. from freezing. Also, implementing a workable new solution must not become too expensive.

The object of the present invention is therefore initially. / elimination of the above-mentioned drawbacks and finding a completely new installation method within the framework of the boundary conditions listed above. This object is achieved by the installation method according to the invention, which is mainly characterized in that at least some of said access points water pipes are routed through a cold space of the building, such as an attic, and placed in dense thermally insulated protective ducts at least in this area.

The invention is based on the idea of using a cold attic space, which is generally not used in the installation 5, while taking care that the pipes cannot freeze in winter. This method is particularly suitable for detached houses, where the attic usually only really acts as an insulator.

10 It is most advantageous to place the conduit ducts completely above the insulation, as it is difficult to get the piping under the thermal insulation of the upper floor, e.g. because of the rafters. By conduit ducts is meant spacious thermally insulated pipes, for example of plastic, in which there is free air space around the water pipes, so that freezing of the water pipes can be prevented preferably by means of warm air supplied to the conduit ducts. The air supplied to the ducts, on the other hand, can most advantageously be used exhaust air from the warm rooms of the building, whereby the ducts of the protective pipe-20 form part of the ventilation ductwork of the building. In this case, the need for energy remains small, because the warm air in question would otherwise have been removed from the building and can still be led out through heat recovery. For example, insulating and heating water pipes with heat-25 games would become significantly more expensive.

In addition, when the conduit ducts are installed integrally up to the inner surface of the room of the building, such as the ceiling, wall or floor surface, possible water leaks are quickly detected.

It is further preferred that those ends of the conduit ducts located on the side of the cold and hot water distribution points, as well as said distribution points, are enclosed in an airtight chamber to which an exhaust air duct is connected.

A significant advantage of the method according to the invention is also that old water pipes can be used during the renovation, where the water interruptions are short. In addition, old water pipes can be left mainly in place, leaving demolition work to a minimum.

The invention will now be described in more detail with reference to the accompanying drawings, in which Fig. 1 shows a schematic diagram of a solution according to the invention, Fig. 2 shows a sectional view of the duct 10 in the attic, and Fig. 3 shows the duct structure in more detail.

In Fig. 1, the cold and hot water distribution points 15 are manifolds denoted by reference numerals 1 and 2, to which at least cold water enters from outside the building via an underground pipe and hot water from a hot water tank near the manifolds 1 and 2 (not shown in the drawings). Of these manifolds 1 and 2, the cold-20 and hot-water pipes 3 and 4 are routed to one or more desired points of use, for example the kitchen, to the toilets the protective pipe duct 5 leading to the washing room B. The protective pipe ducts 5 are installed integrally in the attic A above the thermal insulators 6 up to the surface of the ceiling ceilings 7, 8 of the rooms, i.e. clearly on the warm side of the vapor barrier (not shown in the drawings).

The interior space of the conduit ducts 5, where the cold and hot water pipes 3, 4 are installed, is clearly larger in diameter than the diameter of said water pipes 3, 4, i.e. so spacious that considerably free air space is left around the water pipes 3, 4. As a result, the ducts 5 of the protective pipes 35 can be formed as part of the air duct system of the building 4 99232 so that exhaust air from the warm spaces of the building is sucked through the ducts 5. This continuous warm exhaust air can be used to prevent the water pipes 3, 4 from freezing in winter. The flow temperature-5 of the room temperature is adjusted to minimize the risk of moisture condensation and freezing. Since the air now to be removed via the duct ducts 5 would in any case have to be removed, the solution according to the invention does not substantially affect the energy consumption of the building.

In this example, the intake air of the building through the ducts 5 is realized by enclosing the ends of the ducts 5 on the side of the manifolds 1 and 2 as well as the manifolds 1 and 2 themselves in an airtight chamber 9 which is evacuated by connecting the exhaust may be without thermal insulation on the warm room side. Condensation water can thus also be collected in this chamber 9 and led through a water trap 11 at the bottom of the chamber 9 to the floor drain.

The chamber 9 is preferably dimensioned according to the furniture module, whereby it can be placed in place of an upper cabinet. In the utility rooms of small houses, a natural place can be found next to the ventilation unit. The chamber 9 is preferably constructed in two parts, so that it further comprises a through-plate (not shown in the drawing) into which the protective pipe channels 5 enter and the plate itself is sealed with tape to the vapor barrier. Finally, the chamber part itself or the chamber housing is connected to the bushing plate.

For aesthetic reasons, the aim is to place the sections of the water pipes 3, 4 coming to the warm side 30 of the steam barrier inside the partitions, on the plinths of the furniture, inside the surface mounting strips. The portions that eventually become visible can be made of chromed copper tubes, for example. Particular attention should be paid to condensed water, which should be directed so as not to cause damage. This

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5 99232 requires a tight conduit arrangement up to the surface.

The conduit ducts 5 can be, for example, of the type shown in Fig. 3 with a corrugated flexible plastic inner tube 12 and a surrounding thermal insulation layer 13 also made of plastic. The pipe sizes and wall thickness of the thermal insulation layer 13 are obtained by optimizing the required air flow and condensation.

The invention has been described above by means of only one preferred exemplary embodiment. However, one skilled in the art can implement its details in a number of alternative ways within the scope of the appended claims. Instead of / in addition to the attic, the ductwork can also be placed in other unused cold rooms. In some cases, it may even be advantageous to enclose the duct 15 on the outer wall of the building. The conduit duct itself does not necessarily have to be provided with an insulating layer if it can be placed, for example, inside an attic insulation, such as puff wool. It is essential that air recirculation ensures that the hot water pipes remain thawed.

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Claims (8)

A method for mounting a building's utility water pipes, in which process potassium and hot water pipes (3, 4) are conducted from distribution points (1, 2) for potassium and hot water to the desired points of use, characterized in that the water pipes (3 4) at least a portion of said points of use (1, 2) are led through the cold spaces of the building, such as the wind (A), and at least within this range are provided in tightly insulated protective pipe ducts (5). Method according to claim 1, characterized in that the protective pipe ducts (5) are arranged on the wind (A) above the thermal insulation (6) of the wind or into them. Method according to claim 1 or 2, characterized in that the protective ducts (5) are mounted uniformly to the inner surface of a room space. Method according to any of the preceding claims, characterized in that the protective ducts (5) are supplied with hot air to prevent freezing of water lines (2, 3) within them. 5. A method according to claim 4, characterized in that fresh air from the building's warm spaces is conducted through the protective duct ducts (5). 6. A method according to claim 5, characterized in that the ends of the protective ducts (5) which are on the same side as the distribution points (1, 2) for cold and hot water are encapsulated in an airtight chamber (9), to which a fresh air duct ( 10) connected. Method according to claim 6, characterized in that the distribution points (1, 2) for cold and hot water are also arranged in said chamber (9). 8. A method according to claim 6 or 7, characterized in that a water reader (11) for discharging condensate water is arranged in the bottom of the chamber (9). *