Sentiotec just sauna fin User manual

Version 05/15 ID no. 1-026-970
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 these instructions 5
2. Important information for your safety 6
2.1. Intended use 6
2.2. Safety information for the installer 6
2.3. Safety information for the user 7
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 20
5.8. Connecting bench sensor F2 20

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5.9. Connecting the foil sensor (optional) 20
5.10. Status output 20
5.11. Finishing installation 20
6. Performing tests 21
7. Connection diagram 23
8. Starting up 24
8.1. Setting the fan operating mode 24
8.2. Activating single-sensor mode 25
8.3. Activating/deactivating phase alignment 25
8.4. Setting the light operating mode 25
8.5. Activating/deactivating the foil sensor 26
8.6. Status output 26
8.7. Setting the operating mode for the additional output 26
9. Operating elements 27
9.1. On the power unit 27
9.2. On the operating unit 27
9.3. The touch wheel 28
9.4. Touch wheel scaling 28
9.5. Power level display 29
10. Operation 30
10.1. Switching on the light on the power unit
(cleaning lights) 30
10.2. Switching on the power unit 30
10.3. Activating the operating unit 30
10.4. Starting the sauna 31

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10.5. Switching off the sauna 31
10.6. Switching on the additional output 31
10.7. Switching off the additional device 32
10.8. Switching on the light 33
10.9. Switching off the light 33
10.10. Switching on the fan 34
10.11. Switching off the fan 34
10.12. Deactivating the operating unit 35
10.13. Switching off the power unit 35
11. Cleaning and maintenance 36
11.1. Cleaning 36
11.2. Maintenance 36
12. Disposal 36
13. Troubleshooting 37
14. Fuses 38
15. Technical data 39

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Instructions for installation and use p. 5/40
1. About these instructions
Read these installation and operating instructions carefully and keep them within
reach when using the sauna control unit. This means you can refer to information
regarding both your own safety and sauna operation at any time.
Symbols used for warnings
These installation and operating instructions feature warning symbols next to
activities that present a hazard to the user. Warning symbols must be observed
at all times. This prevents damage to property and injuries which could, in the
worst case, be fatal.
The warning symbols contain keywords that mean the following:
DANGER!
Serious or fatal injury will occur if this warning symbol is not observed.
WARNING!
Serious or fatal injury can occur if this warning symbol is not observed.
CAUTION!
Minor injuries can occur if this warning symbol is not observed.
ATTENTION!
This keyword is a warning that damage to property may occur.
Other symbols
This symbol indicates tips and useful information.
These installation and operating instructions can also be found in the
downloads section of our website: www.sentiotec.com/downloads.

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Instructions for installation and use p. 6/40
2. Important information for your safety
-
cordance with the applicable safety regulations for technical units.
However, hazards may still occur during use. You should therefore

in 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.
Any use exceeding this scope is considered improper. Improper
use can result in damage to the product, severe injuries or death.
2.2. Safety information for the installer
 

Work on the sauna control unit may only be performed when the
power has been disconnected.
An all-pole disconnecting device with full cut-off compliant with


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Instructions for installation and use p. 7/40
The sauna control unit must be installed outside the sauna cabin
at a height of approx. 1.70 m, or in accordance with the rec-
ommendation given 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 ensures it is

The heater supply cable must have a minimum cross-section of
2.5 mm2 and be temperature resistant up to 150 °C.
Observe all regulations applicable at the installation location.
For your own safety, consult your supplier in the event of prob-

instructions.
2.3. Safety information for the user
 
8 years of age.
 
8 years of age, by persons with limited psychological, sensory
or mental capabilities 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.

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Instructions for installation and use p. 8/40
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.
 
front of the infrared lamp before the sauna control unit is switched
on.
For your own safety, consult your supplier in the event of prob-

instructions.

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Instructions for installation and use p. 9/40
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 dimming or activation of a fan (up to 100 W)
Optional dimming (up to 500 W) or activation (up to 3.5 kW) for an addi-
tional output.
The additional output does not feature an excess temperature fuse.
For this reason, only intrinsically safe devices should be operated using the
additional output.
– If infrared lamps are connected to the additional output, these must
have an excess temperature fuse. We recommend using the following
infrared lamps:
DIR-350-R, WIR-350-R, DIR-500-R, WIR-500-R, DIR-750-R,
WIR-750-R, DIR-1300-R, WIR-1300-R
ECO-350-R, ECO-350-G, ECO-500-R, ECO-500-G, ECO-750-R

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Instructions for installation and use p. 10/40
– If one of the following infrared heat plates is connected to an additional
output, the foil sensor P-ISX-FF must be used, and must be activated
8.5. Activating/deactivating the foil
sensor on page 26):
IR-WP-100, IR-WP-175, IR-WP-390, IR-WP-510
IR-WPHL-100, IR-WPHL-175, IR-WPHL-390, IR-WPHL-510
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 switches to standby mode.
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.

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Installation instructions, only for experts p. 11/40
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 silicone cable resistant to temperatures up to 150 °C is used.
The minimum cross-section of the wire totals 0.5 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. 12/40
Fig. 1 Position of the attachment device and the installation holes
(dimensions in mm)
C
4.1. Installing the power unit
1. Screw two cross-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 a distance of 145 mm from each other (see Fig. 1).
2. Press the clip locks C in lightly using a screwdriver and remove the cover
from the housing (see Fig. 2).
3. Fasten the sauna control unit onto the cross-head screws using the attach-
ment device A as an aid (see Fig. 1).
4. Screw two cross-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

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Installation instructions, only for experts p. 13/40
D on 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

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Installation instructions, only for experts p. 14/40
To install the operating unit, perform the following steps:
1. Prepare the installation cut-out (213 x 82 mm) in the wall of the sauna.
2. Place the installation frame A into the installation cut-out.
3. D outwards 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 C into 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. A distance of approx. 15 cm to the roof of the sauna
cabin must be maintained.
The heater sensor must be attached in a way that ensures it is not affected

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 1 of the heater sensor apart.
3. Connect the four connectors for the heater sensor wire 5 in accordance
with the Fig. 4.
4. Place the connection panel 2 crossways (as shown in Fig. 4) in the heater
sensor half-shells.

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Installation instructions, only for experts p. 15/40
5. Place the two half-shells together, screw them together using the two cross-
head screws 3 (9 mm) and check whether the heater sensor has been
securely closed.
6. Install the heater sensor on the rear of the heater using the two wood screws
enclosed 6 (16 mm).
1 Heater sensor half-shells
2 Connection panel
3 Cross-head screws (9 mm)
4 Heater sensor
5 Heater sensor wires
6 Wood 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. A distance of approx. 15 cm to the roof of the sauna cabin 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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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
cross-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 a gap 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 8.5. Activating/deactivating the foil sensor on page 26).

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5. Electrical connection
ATTENTION!
Damage to the unit
The sauna control unit may only be used for operating and regulating 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.
1 Low-voltage connection area
2 Terminal strips for safety shut-off device,
status output and sensor wires
3 Connection socket for operating unit
4 Function selection switch
5 Cable bushing for operating unit,
F2 and foil sensors
6 Cable bushing for F1 sensor
and status output
7 Reserve cable bushing
8 Cable bushing for additional output
9 Cable bushing for heater wire
a Cable bushing for power supply cable
b Cable bushing for power booster
c Cable bushing for lights and fan
d Terminal strip for heater and power supply
cable and additional device
e Terminal strip for lights and fan
f Terminal strip for power booster
g Connection area for 230 V / 400 V
h Earth 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.
 
An all-pole disconnecting device with full cut-off compliant with overvoltage

Observe the connection diagram (Fig. 5) on page 23.
5.1. Connecting the power supply cable and heater cable
1. Guide the power supply and heater cable through the cable bushings a
and 9 into the connection area for 230 V/400 V g.
2. Connect the power supply cables to the terminal strip d in accordance with
the connection diagram. Observe the operating instructions for the respec-
tive devices.
5.2. Connecting the operating unit
1. Guide the connection cable for the operating unit through the cable bush-
ing 5 into 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 c into the connection area
for 230 V/400 V g.
2. Connect the light cable to the terminal strip e in accordance with the connec-
tion diagram. Observe the operating instructions for the respective device.

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5.4. Connecting the fan (optional)
1. Guide the fan cable through the cable bushing c into the connection area
for 230 V/400 V g.
2. Connect the fan cable to the terminal strip e in accordance with the connec-
tion 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.
WARNING!

The additional output does not feature an excess temperature fuse. For
this reason, only intrinsically safe devices should be operated using the
additional output.
If infrared lamps are connected to the additional output, these must
have an excess temperature fuse.
If infrared heat plates are connected to an additional output, the foil

ing operation (see 8.5. Activating/deactivating the foil sensor on
page 26).
1. Guide the connection cable for the additional device through the cable bush-
ing 8 into the connection area for 230 V/400 V g.
2. Connect the power supply cables to the terminal strip d in accordance with
the connection diagram. Observe the operating instructions and safety in-
structions for the respective device.
5.6. Connecting the power booster (optional)
1. Guide the cable for the power booster through the cable bushing b into the
connection area for 230 V/400 V g.
2. Connect the cable for the power booster to the terminal strip f in ac-
cordance 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.

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5.7. Connecting heater sensor F1
1. Guide the wires for the heater sensor through the cable bushing 6 into 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.
5.8. Connecting bench sensor F2
1. Guide the wires for the bench sensor through the cable bushing 5 into 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. Connecting the foil sensor (optional)
1. Guide the wires for the sensor through the cable bushing 5 into the low-
voltage connection area 1.
2. Connect the wires for the sensor to the terminals labelled “FF” in terminal
strip 2.
5.10. Status output
Any electrical device can be connected to the status output terminal which is
suitable for 24 V DC voltage and draws a current no greater than 200 mA.
Make sure the polarity is correct when connecting a device. When LEDs are
used, a suitable series resistor must be used.
5.11. Finishing installation
1. Connect the earth conductor for the power supply cable and all devices to
the earth rail h.
2. Place the cover of the housing on the upper edge of the junction box.
3. Push the clip locks inwards lightly, and turn the cover of the housing down-
wards until it engages audibly.