-2-
1.7
The temperature of the tap water in the heat exchanger sometimes exceeds 25 °C. The temperature should not
exceed that when the ´Recoh-drain´ is not in use (no cold water flowing). The ´Recoh-drain´ may therefore not be
installed next to heat transporting pipes or on warm surfaces such as on floor heating. The cold tap water pipe en
and the ´Recoh-drain´ may therefore not be insulated.
However, the ´Recoh-tray´ contains less than 1 litre of tap water. According to this it may be assumed that no
Legionaire’s Disease will develop.
Safety and Legionaire's Disease
1.8
The figure at right illustrates the pressure loss
of the ´Recoh-drain´, on the tap water side.
At 9,2 l/min the pressure loss is 0,53 bar.
At 12,5 l/min the pressure loss is 0,94 bar.
Loss of pressure
1.6
A
exchanger's tank is made of high-quality plastic. Please refer to the relevant drawing for the dimensions.
Sizes of the gutter frame and grate (between tiles):
Of the wall mounting 123 x 835 mm
Wall mounting 136 (- thickness tiles) x 835 mm
Materials and dimensions
ll the heat exchanger's parts that come into contact with water have been made of copper or brass. The heat
Floor and wall heating:
Assuming a maximum temperature of 50 ° C water in the floor heating system, there must be at least 100 mm
distance to be held to the Recoh-drain system (see drawing).
1.9 Design installation
It is necessary to take into account the installation of the Recoh-drain during the design phase of a building.
For the heat exchanger is required a recess in the floor of 1000x230mm and 200/220mm deep (from top screed).
Regarding to this must be taken into account the place in the floor (measurements) and the constructive
consequences of this.
The heat exchanger must also be taken into account in the design of the sewer (gradient). The heat exchanger has a
certain depth that is necessary and on top of this comes the required amount of grade in the sewerage. The
connecting pipe (Ø50mm) until a length of 3.5 meters requires no grade. From 3.5 meters the pipe must be ø75mm
and is a gradient of 5mm/m1 required.
The external diameter of the outlet is 50 mm and can therefore be connected to the standard PP and PVC pipe
dimensions for the sewer. The sewer coming into the recess must be 50 mm.
Deaeration of the Recoh-drain is not necessary, all air will disappear by opening the tap.
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