Sentiotec Just Sauna Fin Series User manual

Version 12/13 ID no. 50950100
EN
INSTRUCTIONS FOR INSTALLATION AND USE
English
Sauna control unit
just sauna fin
JUST-105D-FI / JUST-105W-FI

WORLD OF WELLNESS
Table of Contents
1. About this instruction manual 5
2. Important information for your safety 6
2.1. Intended use 6
2.2. Safety information for the installer 7
2.3. Safety information for the user 8
3. Product description 9
3.1. Scope of delivery 9
3.2. Accessories 9
3.3. Product functions 9
3.4. Sensor operating modes 10
4. Installation 11
4.1. Installing the power unit 12
4.2. Installing the operating unit 13
4.3. Installing the heater sensor F1 with excess temperature fuse 14
4.4. Installing the bench sensor F2 15
4.5. Installing the foil sensor (optional) 16
5. Electrical connection 17
5.1. Connecting the power supply cable and heater cable 18
5.2. Connecting the operating unit 18
5.3. Connecting the light 18
5.4. Connecting the fan (optional) 19
5.5. Connecting the additional output (optional) 19
5.6. Connecting the power booster (optional) 19
5.7. Connecting heater sensor F1 19
5.8. Connecting bench sensor F2 20
  20
5.10. Connecting the safety shut-off device 20

WORLD OF WELLNESS
EN
5.11. Remote start 21
5.12. Status output 21
5.13. Finishing installation 21
6. Performing tests 22
7. Connection diagram 24
8. Starting-up 25
8.1. Setting the fan operating mode 25
8.2. Activating single-sensor mode 25
8.3. Activating/deactivating phase alignment 26
8.4. Activating/deactivating the remote start function 26
8.5. Setting the light operating mode 27
8.6. Activating/deactivating the foil sensor 27
8.7. Status output 27
8.8. Setting the operating mode for the additional output 28
9. Operating elements 29
9.1. On the power unit 29
9.2. On the operating unit 29
9.3. The touch wheel 30
9.4. Touch wheel scaling 30
9.5. Power level display 31
10.Operation 32
10.1. Switching on the light on the power unit (cleaning lights) 32
10.2. Switching on the power unit 32
10.3. Activating the operating unit 32
10.4. Starting the sauna 33
10.5. Switching off the sauna 33

WORLD OF WELLNESS
10.6. Switching on the additional output 33
10.7. Switching off the additional device 34
10.8. Switching on the light 35
10.9. Switching off the light 35
10.10.Switching on the fan 36
10.11.Switching off the fan 36
10.12.Deactivating the operating unit 37
10.13.Switching off the power unit 37
11.Cleaning and maintenance 38
11.1. Cleaning 38
11.2. Maintenance 38
12.Disposal 39
13.Troubleshooting 40
14.Technical data 41

WORLD OF WELLNESS
EN
Instructions for installation and use p. 5/42
1.About this instruction manual
Read these instructions for installation and use carefully and keep them within
reach of the sauna control unit. This ensures that you can refer to information
regarding your safety and regarding operation at any time.
Symbols used for warning notices
In these instructions for installation and use, a warning notice located next to
an activity indicates that this activity poses a risk. Always observe the warning
notices. This prevents damage to property and injuries which could in the worst
case even be fatal.
The warning notices contain keywords, which have the following meanings:
DANGER!
Serious or fatal injury will occur if this warning notice is not observed.
WARNING!
Serious or fatal injury can occur if this warning notice is not observed.
CAUTION!
Minor injuries can occur if this warning notice is not observed.
ATTENTION!
This keyword is a warning that damage to property can occur.
Other symbols
This symbol indicates tips and useful information.
These instructions for installation and use can also be found in the down-
loads section of our website: www.sentiotec.com.

WORLD OF WELLNESS
Instructions for installation and use p. 6/42
2.Important information for your safety
-
cordance with the applicable safety regulations for technical units.
However, hazards may occur during use. Therefore adhere to the

the individual chapters. Also observe the safety information for the
devices connected.
2.1. Intended use
-
ing and controlling sauna heaters, lighting units and ventilators in
a private household in accordance with the technical data.

outside the sauna room.
The remote start function provided by the sauna control unit just

remote start function is activated when starting up the unit for the


as satisfying the combustion test described in paragraph 19.101 of
EN 60335-2-53. Alternatively, a suitable safety shut-off device can
be installed in or above the heater.
Any use exceeding this scope is considered improper use. Improper
use can result in damage to the product, in severe injuries or death.

WORLD OF WELLNESS
EN
Instructions for installation and use p. 7/42
2.2. Safety information for the installer


Work on the sauna control unit may only be performed when the
power has been disconnected.
A three-phase shut-off device with a 3 mm contact opening must
be provided during installation. This is provided by the fuse.
The sauna control unit must be installed outside the sauna room
at a height of approx. 1.70 m or in accordance with the rec-
ommendation issued by the sauna manufacturer. The ambient
temperature must be within a range spanning -10 °C to +40 °C.
The heater sensor must be attached in a way that it is not af-

The heater supply cable must have a minimum cross-section of
2.5 mm2and be temperature resistant up to 150 °C.
Also comply with the regulations applicable at the installation
location.
For your own safety, consult your supplier in the event of prob-

instructions.

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Instructions for installation and use p. 8/42
2.3. Safety information for the user
The device must not be used by children under 8 years of age.
The device may only be used by children above 8 years of age,
by persons with limited psychological, sensory or mental capa-
bilities or by persons with lack of experience/knowledge under
the following conditions:
– When they are supervised.
– When they have been shown how to use the device safely
and are aware of the hazards that could occur.
Children must not play with the sauna control unit.
Children under 14 years of age may only clean, or perform main-
tenance on, the sauna control unit if they are supervised.
 -
ence of alcohol, medication or drugs.
 
sauna heater before the sauna control unit is switched on.
 
heater before activating stand-by mode for the remote start.
Make sure that no flammable objects have been placed on
or in front of the infrared lamp before the sauna control unit is
switched on.
 
heater before activating the infrared lamp or the stand-by mode
for the remote start.
For your own safety, consult your supplier in the event of prob-

instructions.

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Instructions for installation and use p. 9/42
3.Product description
3.1. Scope of delivery
Operating unit
Power unit
Heater sensor with integrated excess temperature fuse (F1)
Bench sensor (F2)
Sensor wires
Installation material
3.2. Accessories
Foil sensor (item number: P-ISF-FF)
Power booster (item number: O-S2-18 / O-S2-30)
Safety shut-off (item number: HT-SWL)
3.3. Product functions

Regulation of sauna heaters of up to 10.5 kW in the temperature range span-
ning 55 °C to 110 °C.
A power booster allows the maximum heating output to be increased from
10.5 kW to 18 kW or 30 kW.
Optional dimming or activation of a room light (up to 100 W)
Optional dimmer function or activation of a fan (up to 100 W)
Optional dimmer function (up to 500 W) or activation (up to 3.5 kW) for an
additional output (e.g. an infrared lamp or infrared heat plates)
Automatic heating period limiter
If the operating unit has been running continuously for 6 hours, the sauna
control unit switches off all the consumers for safety reasons. The operating
unit goes into standby mode.

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Instructions for installation and use p. 10/42
Remote start function
The remote start function is deactivated ex-works. When the remote start func-

unit may only be used for operating and controlling a sauna heater which

19.101 of EN 60335-2-53. Alternatively, a suitable safety shut-off device can
be installed in or above the heater. Activation of the remote start function
must be carried out by an electrician (see 8.4. Activating/deactivating the
remote start function on page 26).
Status output
Excess temperature fuse
The excess temperature fuse is installed in the housing for the heater sen-
sor. Should the sauna heater continue heating after reaching the preferred
temperature due to a defect, the excess temperature fuse switches the sauna
heater off at a temperature of approx. 139 °C.
3.4. Sensor operating modes
The sauna control unit can be operated with one or two temperature sensors.
Single-sensor mode (F1)

time (see 8.2. Activating single-sensor mode on page 25).
In single-sensor mode, the sauna control unit is operated with the heater sensor
with an excess temperature fuse (F1) only. In single-sensor mode, the sauna control
unit only displays the set temperature. The actual temperature is not displayed.
Two-sensor mode with bench sensor (F2)
The second temperature sensor is installed above the rear sauna bench (bench
sensor). In two-sensor mode, the sauna control unit displays the temperature
measured by the bench sensor as the actual temperature.

WORLD OF WELLNESS
EN
Installation instructions, only for experts p. 11/42
4.Installation
Observe the following points when installing the sauna control unit:
The power unit and the operating unit must be installed outside the sauna room
or in accordance with the recommendation issued by the sauna manufacturer.
The ambient temperature must be within a range spanning -10 °C to +40 °C.
The sensors may only be connected using the sensor wires provided with the
unit, which are heat-resistant up to 150 °C.
ATTENTION!
Damage to the unit
The sauna control unit is protected against jets of water, however direct contact
with water could still damage the unit.
Install the sauna control unit in a dry place at which a maximum humidity of
95% is not exceeded.
The sensor wires may be extended under the following conditions:
When a silicon wire resistant to temperatures up to 150 °C is used.
The minimum cross-section of the wire totals 0.75 mm2.
The length of the heater sensor wires may NOT exceed 10 m.
ATTENTION!
Sources of interference can have a negative effect on signal transmission
Lay all sensor wires separately from other mains wires and control wires.
Protect wires with only one layer of insulation by using a pipe (double insulation).

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Installation instructions, only for experts p. 12/42
Fig. 1 Position of the attachment device and the installation holes
(dimensions in mm)
C
4.1. Installing the power unit
1. Screw two Phillips-head screws (16 mm) into the wall of the sauna at a height
of approx. 1.70 m to a distance of up to 7 mm. The two screws must be
placed at an interval of 145 mm to each other (see Fig. 1).
2. Press the clip locks Cin lightly using a screwdriver and remove the cover
from the housing (see Fig. 2).
3. Fasten the sauna control unit onto the Phillips-head screws using the at-
tachment device Aas an aid (see Fig. 1).
4. Screw two Phillips-head screws (16 mm) into the lower fastening holes B
(see Fig. 1).
82
80
34
175
145
34
43
40
A
B
Fig. 2 Removing the cover from the housing

WORLD OF WELLNESS
EN
Installation instructions, only for experts p. 13/42
Don walls up

using screws which are screwed into the fastening holes B.
C Operating unit
D Fixing plates
Fig. 3 Installing the operating unit
A
C
D
B
A Installation frame
B Fastening holes
4.2. Installing the operating unit

WORLD OF WELLNESS
Installation instructions, only for experts p. 14/42
To install the operating unit, perform the following steps:
1. Prepare an installation cut-out (213 x 82 mm) in the wall of the sauna.
2. Place the installation frame Ainto the installation cut-out.
3. Doutwards using
a screwdriver.
4. Lay the RJ-12 cable in the wall of the sauna room, leading it from the power
unit installation location to the installation cut-out for the operating unit.
5. Connect the plug of the RJ-12 cable to the connection socket on the rear
of the operating unit.
6. Place the operating unit Cinto the installation frame A.
4.3. Installing the heater sensor F1 with excess temperature fuse
Observe the following points when installing the heater sensor:
The heater sensor must be installed on the rear of the heater, above the mid-
dle of the sauna heater. An interval of approx. 15 cm to the roof of the sauna
room must be maintained.
 
of air.
To install the heater sensor, perform the following steps (see Fig. 4):
1. Lay the two 2-pin heater sensor wires in the wall of the sauna room, leading

wires using wire clips.
2. Pull the two half-shells 1of the heater sensor apart.
3. Connect the four connectors for the heater sensor wire 5in accordance
with the Fig. 4.
4. Place the connection panel 2crossways (as shown in Fig. 4) in the heater
sensor half-shells.

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Installation instructions, only for experts p. 15/42
1. Place the two half-shells together, screw them together using the two Phillips-
head screws 3(9 mm) and check whether the heater sensor has been
securely closed.
2. Install the heater sensor on the rear of the heater using the two wood screws
enclosed 6(16 mm).
1Heater sensor half-shells
2Connection panel
3Phillips-head screws (9 mm)
4Heater sensor
5Heater sensor wires
6Wood screws (16 mm)
Fig. 4 Installing the heater sensor (F1)
Red White White Red
4.4. Installing the bench sensor F2
The bench sensor must be installed on the wall of the sauna room, above the
rear bench seat. An interval of approx. 15 cm to the roof of the sauna room must
be maintained.
To install the bench sensor, perform the following steps:
1. Lay the two 2-pin bench sensor wires in the wall of the sauna room, leading

wires using wire clips.

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Installation instructions, only for experts p. 16/42
2. Pull the two half-shells of the bench sensor apart.
3. Connect the two connectors for the bench sensor wire to the two middle
terminals on the connection panel.
4. Place the connection panel crossways in the bench sensor half-shells.
5. Place the two half-shells together and screw them together using the two
Phillips-head screws (9 mm).
6. Check whether the bench sensor has been securely closed.
7. Install the bench sensor on the wall of the sauna room using the two wood
screws enclosed (16 mm). Maintain an interval of 15 cm to the roof of the
sauna room.
4.5. Installing the foil sensor (optional)
If one of the following infrared heat plates is connected to an additional output,
the foil sensor P-ISX-FF must be used:
IR-WP-100
IR-WP-175
IR-WP-390
IR-WP-510
IR-WPHL-100
IR-WPHL-175
IR-WPHL-390
IR-WPHL-510
When installing the foil sensor, observe the operating instructions for the
infrared heat plates.

(see 8.6. Activating/deactivating the foil sensor on page 27).

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Installation instructions, only for experts p. 17/42
5.Electrical connection
ATTENTION!
Damage to the unit
The sauna control unit may only be used for operating and controlling 3 heat-
ing circuits with a maximum heating capacity of 3.5 kW per heating circuit.
The maximum additional output capacity totals 3.5 kW.
1Low-voltage connection area
2Terminal strips for safety shut-off device,
remote start, status output and sensor wires
3Connection socket for operating unit
4 Function selection switch
5Cable bushing for operating unit, F2 and
foil sensors
6Cable bushing for F1 sensor and status
output
7Cable bushing for safety shut-off device and
remote start
8Cable bushing for additional output
9 Cable bushing for heater wire
aCable bushing for power supply cable
bCable bushing for power booster
cCable bushing for lights and fan
dTerminal strip for heater and power supply
cable and additional device
eTerminal strip for lights and fan
fTerminal strip for power booster
gConnection area for 230 V / 400 V
hEarth rail
1
2
5
4
6
7
c
8
9
a
b
d
e
f
g
3
h

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Observe the following points when connecting the power to the sauna control unit:
-

Please observe that in the event of a guarantee claim, a copy of the bill
from the electrician performing the work must be presented.
Work on the sauna control unit may only be performed when the power has
been disconnected.
 
A three-phase shut-off device with a 3 mm contact opening must be provided
during installation. This is provided by the fuse.
Observe the connection diagram (Fig. 5) on page 24.
5.1. Connecting the power supply cable and heater cable
1. Guide the power supply and heater cable through the cable bushings a
and 9into the connection area for 230 V/400 V g.
2. Connect the power supply cables to the terminal strip din accordance
with the connection diagram. Observe the operating instructions for the
respective devices.
5.2. Connecting the operating unit
1. Guide the connection cable for the operating unit through the cable bush-
ing 5into the low-voltage connection area 1.
2. Connect the plug of the RJ-12 cable to the connection socket 3.
5.3. Connecting the light
1. Guide the light cable through the cable bushing cinto the connection area
for 230 V/400 V g.
2. Connect the light cable to the terminal strip ein accordance with the con-
nection diagram. Observe the operating instructions for the respective device.

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Installation instructions, only for experts p. 19/42
5.4. Connecting the fan (optional)
1. Guide the fan cable through the cable bushing cinto the connection area
for 230 V/400 V g.
2. Connect the fan cable to the terminal strip ein accordance with the con-
nection diagram. Observe the operating instructions for the respective device.
5.5. Connecting the additional output (optional)
The additional output can, for example, be used for an infrared lamp or infrared
heat plates.
1. Guide the connection cable for the additional device through the cable bush-
ing 8into the connection area for 230 V/400 V g.
2. Connect the power supply cables to the terminal strip din accordance
with the connection diagram. Observe the operating instructions and safety
instructions for the respective device.
5.6. Connecting the power booster (optional)
1. Guide the cable for the power booster through the cable bushing binto
the connection area for 230 V/400 V g.
2. Connect the cable for the power booster to the terminal strip fin accord-
ance with the connection diagram. To do so, use terminal “ST1” for the safety
circuit, and terminal “ST2” for the control circuit. Observe the operating
instructions for the respective device.
5.7. Connecting heater sensor F1
1. Guide the wires for the heater sensor through the cable bushing 6into the
low-voltage connection area 1.
2. Connect the red wires for the heater sensor to the terminals labelled “STB”
in terminal strip 2.
3. Connect the white wires for the heater sensor to the terminals labelled “F1”
in terminal strip 2.

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5.8. Connecting bench sensor F2
1. Guide the wires for the bench sensor through the cable bushing 5into the
low-voltage connection area 1.
2. Connect the wires for the bench sensor to the terminals labelled “F2” in
terminal strip 2.
5.9. 
1. Guide the wires for the sensor through the cable bushing 5into the low-
voltage connection area 1.
2. Connect the wires for the sensor to the terminals labelled “FF” in terminal
strip 2.
5.10. Connecting the safety shut-off device
EN 60335-2-53 states that sauna control units with a remote start or preset timer
function may only be used for operating and regulating a sauna heater which

a suitable safety shut-off device can be installed in or above the heater. This shuts
the sauna heater off when objects, e.g. a towel, are placed on the sauna heater.
To install the safety shut-off device, perform the following steps:
1. Install the safety shut-off device in accordance with the operating instruc-
tions for the device.
2. Guide the wires for the safety shut-off device through the cable bushing 7
into the low-voltage connection area 1.
3. Connect the wires for the temperature sensor to the terminals labelled “OSG”
in terminal strip 2.
When the remote start function is deactivated, you may also use the sauna
control unit just sauna with a safety shut-off device. In this case, bridge
terminal “OSG” in the low-voltage connection area 1using a wire jumper.