HEITECH Recoh-drain Installation Manual

Installation manual General
Recoh-drain RD1-835CW
We would like to congratulate you on your purchase of the ´Recoh-drain´. The ´Recoh-drain´ is one of most
economically interesting forms of energy saving. The pay-back time is short! Using the ´Recoh-drain´ saves on fossil
fuels. The stocks of fossil fuels are limited and using the ´Recoh-drain´ can help reduce global warming.
1. General
1.1 Introduction
On average, a shower uses 60 litres of water at a temperature of between 38 and 40 °C. This shower water goes
straight down the drain, wasting a great deal of heat. By running the hot water through the ´Recoh-drain´, this heat
can be transferred to the water on its way to the boiler and the cold water tap of the shower's mixer tap. This heat
transfer takes place during simultaneous flows i.e. while you shower.
Every Recoh-drain has a sticker with technical information and unique number. The sticker must always be legible.
If not legible the guarantee will expire.
1.2 General
The Recoh-drain is placed in a shower drain. The Recoh-drain can excellent be used in apartments, houses with
bathrooms on the ground floor, etc. The height of the heat exchanger is such that it can be placed in almost any
floor. The Recoh-drain comes with matching frame and grate.
When you start showering it takes a little while for the ´Recoh-drain´ to start contributing to the heating of the cold
water. This means the temperature of the shower water will continue to rise for some time. Using a thermostatic
mixer tap is therefore recommendable.
When using the Recoh-drain, the tap limit of the hot water preparer must be taken into account. It is possible the
necessary energy (blending hot water) is lower than the minimal quantity of energy delivered by the hot water
preparer (switch-off point burner).
1.3 Description of the heat exchanger
The Recoh-drain consists of several plates over which the waste water flows from the shower. In the plates the
fresh water flows upward. At the bottom of the tank from the heat exchanger, the drain water is being discharged.
Directly below the grate is placed the siphon gutter.
The exceptional thing about the ´Recoh-drain´ is that it has a double barrier between the waste water and the tap
water. The great advantage of a double barrier is that this allows the heat exchanger to be connected directly to
the indoor plumbing. No open connection in the indoor plumbing is therefore required!
1.4 Accessibility
The controllable non-return valve should be visible and accessible. Any possible leaks should be able to be seen.
The heat exchanger is a device and should therefore be accessible. Any possible replacement should be able to
take place without having to take everything apart.
1.5 Connections
The tap water supply pipe should have a controllable non-return valve and a cut-off valve installed in it (these are
already pre-assembled).
The 15mm tubes of the heat exchanger must be connected to the mains water supply pipe by using a fitting that is
demountable. For dimensions and further details please refer to the drawings of the installation instruction.
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