Condair RM2 - Functional Description

12 Product Overview
3.4 Functional description
The Condair RM steam humidier is an atmospheric steam humidier. It operates on the resistance
heating principle and is designed for indirect humidication via a steam distributor in venti lating and
air-conditioning systems.
Water supply
The water is supplied via a lter valve (accessory "Z261") to the steam humidier. It reaches the steam
tank via the level controlled inlet valve and the open lling cup.
Note: The open lling cup is designed in such a way, that the supply water is separated from the unit
water. That means, that no unit water can ow back into the supply water line.
Level regulation
The water level in the steam tank is continuously monitored with the level unit. If the water level reaches
a preset level (due to the evaporation process) the level unit supplies a signal to the controller. This
opens the inlet valve and the steam tank is lled up. When the preset operating level is reached, the
level unit supplies another signal to the controller to close the inlet valve.
The pressure equalizing pipe connected to steam tank and the level unit ensures that the water levels
are the same in the steam tank and the level unit.
Steam generation regulation
The steam is produced in the steam tank by one or several resistance heating elements. The integrated
continuous controller or an external controller controls the steam production in steps from 0 to 100 %.
Alternatively the Condair RM can be controlled also via an On/Off controller.
Flushing
The evaporation process increases the concentration of minerals in the water of the steam tank. A suitable
volume of water must be ushed out of the steam tank from time to time and replaced by fresh water to
ensure that this concentration does not exceed a specic value unsuitable for operation.
The Condair RM consists of the following two forms of ushing:
– Automaticushingtakes place as soon as the water in the steam tank exceeds the upper operat-
ing level (e.g. by foaming of the water).
– Flushing dependent on water quality.
Automatic or water quality dependent ushing takes place depending on the water quality and the op-
erating data. If the lowest operating level is reached during the ushing process, the inlet valve remains
open until the water level in the steam tank has reached the normal working level again. If the lowest
operating level is not reached, the inlet valve is closed.