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3.2 Temperature sensor usage
A temperature sensor must be installed in the
cabin for a steam bath. The sensor measures
the actual temperature and transmits the
measurement value to the control. The tem-
perature serves as the controlled variable for
controlling the steam production.
3.2.1 Installation of the temperature
sensor
The best mounting position of the tempera-
ture sensor is 800 to 1000 mm (31 to 39 inch)
above the seating surface (and thus in the
height of head of the persons in the steam
bath cabin). The sensor must be mounted
directly to the wall surface. Installation under
a panelling would falsify the measurement
result.
The sensor must not be mounted directly
above the steam entrance into the cabin.
Risk of scalding when steam bath tempe-
rature rises due to temperature sensor
manipulation!
Do not cover the temperature sensor or pour
over cold water.
3.2.2 Connection of the temperature
sensor
The connection cable of the temperature
sensor is to be wired to terminals 4 and 7 of
the FlexLine SPA control. The sensor has
been adjusted ex-factory. Verifying of the
measurement value can be made by using
the temperature/resistance table following
below. Readjustment of the sensor can be
made in a +/- 5 K range, if required. In this
case, an additional temperature measure-
ment device is required for referencing.
3.3 Steam bath temperature con-
trol
The steam output of the HygroMatik steam
generator is controlled by the FlexLine SPA
control according to the measured tempera-
ture. The
relative humidity
is not measured
because it is
always 100%
after the heating-
up phase. Essence injectors, lights and sup-
ply and exhaust fans, which are available as
order options, can be connected to the steam
generator.
The functioning of the temperature control is
illustrated by the sample diagram in section
3.5, which is based on the following default
values:
Steam bath temperature set value:
45 °C
∆
Temp._steam_on/off:
1K
(Temp._set value + Temp._steam_on/off) =
45 °C + 1K =
46 °C
•
When 46 °C has been reached, steam
production is switched off in 1 step
operation, during continuous operation
(with the internal PI controller), it is
reduced
•
If the temperature in the steam bath
drops below the set value 45 °C, steam
production is resumed (1 step opera-
tion) or ramped up (continuous opera-
tion)
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:$51,1*
Temperature/resistance-table
Temperature in °C
Resistance in k
Ω
10
28,5
20
18,5
30
12,3
40
8,3
50
5,8
60
4,1
70
2,9
80
2,1
