Sentiotec Pro B3 Användarmanual

Version 01/23 Ident-Nr. ST-M-00006-01

Sauna control PRO B

new function „Door sensor“

Supplement / change to the operating instructions:

PRO-B2 /1-015-455 , PRO-B3 /1-015-457 Version 12/21

Product manual you can nd at: https://www.sentiotec.com/downloads or

The new function ensures optimal door monitoring for remote control!

Optionale accessories: Door sensor home SAB00103 / 1-052-723

The connection position of

STB and OSG were exchanged!

Note the change in the above product manual under the following points:

5. Electrical connection

Installing heater sensor (clamp red wires at STB)

Connecting safety device or NEW connecting door sensor

8. Starting up

Remote start release:

●As standard the function selection switch is in the OFF position.

The remote star is operated using „Standby for remote control“.

●If you want to enable the remote start output for various devices (e.g.

coinoperated unit, remote start system), set the function selection

switch 4 in the ON position

Activate door sensor at Pro B2

1. Open the technician menu (press at the same time: ON/OFF button,

preset time button and the lower bottom knob)

►In the top display „SdO“ appears

►In the bottom display „SAFE“ appears (= standard setting)

2. Turn the lower knob to the right

►In the lower display “door“ appears

3. Exiting the technician menu (Longpress on the lower knob)

EN

NEU

STB

Heating period

limit

Phase alignment

Remote start

release

Evaporator

single mode

Sensor operating

mode

Not assigned

Preset temperature /

Heater temperature

as actual emperature

OFF

OSG

STBOSG

Function selection switch –

Standard setting

DE

EN

Additional sheet for instructions for use p. 2/2

Activate door sensor at Pro B3

1. Open the technician menu (press at the same time: ON/OFF button, preset time button and the lower

bottom knob)

► In the top display „dry“ appears

► In the bottom display „t60“ appears

2. Turn the lower buttom (Selection 0 - 60; 0 = post-drying progamm off , 60 = maximum runtime in minutes)

3. Press the lower knob

►In the top display „SdO“ appears

►In the bottom display „SAFE“ appears (= standard setting)

4. Turn the lower knob to the right

►In the lower display “door“ appears

5. Exiting the technician menu (Longpress on the lower knob)

10. Operation

Activating „Standby for remote operation“ with door sensor

Press the ON/OFF switch, to switch on the sauna control unit.

Press the lower knob (= Temperature selector) for three seconds (=Longpress)

►A countdown of 30 seconds is shown in the lower display. During this time, the door can be opened/

closed as often as you like. After the countdown has expired, the door must be closed!

►The remote start indicator starts ashing.

►The sauna control is now ready to be started and stopped once via a remote start signal = Mode

„Standby for remote operation“

Door is opened - warning „door“ appears in the display

- at mode „Standby for remote operation“:

To continue the mode, the door must be closed and the warning must be acknowledged with a long press

on the lower rotary control. ► The countdown (30 sec.) is shown again in the lower display.

- in operation or enable remot start output (for coinoperated unit or door sensor system):

The acknowledgment takes place automatically when the door is closed.

Version 01/23 Ident-Nr. ST-M-00006-01

Saunasteuerung PRO B

neue Funktion „Türsensor“

Ergänzung / Änderung zu den Bedienungsanleitungen:

PRO-B2 /1-015-455 , PRO-B3 /1-015-457 Version 12/21

Bedienungsanleitung unter: https://www.sentiotec.com/downloads oder

Die neue Funktion gewährleistet die eine optimale Türüberwachung bei Fernwirken!

optionales Zubehör: Türsensor Home SAB00103 / 1-052-723

Die Anschlussposition von

STB und OSG wurden getauscht!

Beachten Sie die Änderungen in den oben angeführten Bedienungsanleitungen unter folgenden Punkten:

5. Elektrischer Anschluss

Ofenfühler anschließen (rote Leitungen an STB anklemmen)

Sicherheitsabschaltung anschließen bzw. NEU Türsensor anschließen

8. Inbetriebnahme

Fernstart-Freigabe:

●Standardmäßig bendet sich der Funktionswahlschalter 4 in OFF-

Position. Der Fernstart wird mittels „Standby für Fernwirken“ aktiviert.

●Wenn Sie den Fernstart-Ausgang für div. Geräte (wie z.B. Münzer,

Türsensor-System) freischalten möchten, bringen Sie den Funkti-

onswahlschalter 4 in ON-Position.

Türsensor aktivieren bei Pro B2

1. Rufen Sie das Techniker-Menü auf (Beim Einschalten gleichzeitig

die Tasten EIN/AUS, Vorwahlzeit und den unteren Drehknopf drücken)

►Im oberen Display erscheint „SdO“

►Im unteren Display erscheint „SAFE“ (=Standardeinstellung)

2. Drehen Sie den unteren Drehknopf nach rechts

►Im unteren Display erscheint “door“

3. Verlassen Sie das Technikermenü (Longpress auf unteren Drehregler)

NEU

STB

Heizzeitbe-

grenzung

Phasen-

rollierung

Fernstart-

Freigabe

Verdampfer-

Single-Betrieb

Fühlerbe-

triebsart

Nicht belegt

Solltemperatur /

Ofentemperatur als

Ist-Temperatur

OFF

OSG

STBOSG

Funktionswahlschalter-

Standardeinstellung

DE

Zusatzblatt zur Bedienungsanleitung S. 2/2

Türsensor aktivieren bei Pro B3

1. Rufen Sie das Techniker-Menü auf (Drücken Sie gleichzeitig die Vorwahlzeit-Taste und den unteren

Drehknopf = Temperaturwähler)

► Im oberen Display erscheint „dry“

► Im unteren Display erscheint „t60

2. Drehen Sie den unteren Drehknopf (Auswahl 0 - 60; 0 = Nachtrockenprogramm ausgesschaltet

60 = maximale Laufzeit in Minuten)

3. Drücken Sie den unteren Drehknopf

►Im oberen Display erscheint „SdO“

►Im unteren Display erscheint „SAFE“

4. Drehen Sie den unteren Drehknopf nach rechts

►Im unteren Display erscheint “door“

5. Verlassen Sie das Technikermenü (Longpress auf unteren Drehregler)

10. Bedienung

Standby für Fernwirken (mit Türsensor) aktivieren

Drücken Sie den EIN/AUS-Schalter, um die Saunasteuerung einzuschalten.

Drücken Sie für 3 Sekunden (=Longpress) den unteren Drehknopf (=Temperaturwähler)

►Im unteren Display wird ein Countdown von 30 Sekunde angezeigt. Die Tür kann in dieser

Zeit beliebig oft geöffnet / geschlossen werden. Nach Ablauf des Countdown muss die Türe

geschlossen sein!

►Die Fernstart-Anzeige blinkt

►Die Saunasteuerung ist nun bereit um über ein Fernstartsignal einmalig gestartet und gestoppt

zu werden = Modus „Standby für Fernwirken“

Tür wird geöffnet - im Display erscheint Warnung „door“

- im Modus Standby für Fernwirken:

Um den Modus fortzusetzen muss die Tür geschlossen werden, und die Warnung muss mittels Longpress

auf den unteren Drehregler quittiert werden. ► Im Display wird wieder der Countdown (30Sek.) angezeigt.

- im laufenden Betrieb oder freigegebenen Fernstart-Ausgang (für Münzer oder Türsensor-System):

Die Quittierung erfolgt automatisch, wenn die Tür geschlossen wird.

Version 12/21 ID no. 1-026-967

INSTRUCTIONS FOR INSTALLATION AND USE

English

EN

DE

FR

IT

NL

SV

FI

Sauna control unit

PRO B3

PRO-B3 / 1-015-457

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. Optional accessories 9

3.3. Product functions 9

3.4. Sauna operating modes 10

3.5. Sensor operating modes 10

4. Installation 12

4.1. Installing the sauna control unit 12

4.2. Installing the heater sensor F1 with excess temperature fuse 14

4.3. Installing bench sensor F2 (optional) 15

4.4. Installing the humidity temperature sensor FTS2 (optional) 15

5. Electrical connection 16

5.1. Connecting the power supply cable, heater and evaporator 17

5.2. Connecting the light 17

5.3. Connecting the fan (optional) 18

5.4. Connecting the power booster (optional) 18

5.5. Connecting heater sensor F1 18

5.6. Installing bench sensor F2 (optional) 18

5.7. Installing humidity temperature sensor FTS2 (optional) 19

  19

5.9. Remote start 20

5.10. Finishing installation 20

EN

6. Performing tests 21

7. Connection diagram 23

8. Starting-up 24

8.1. Setting the heating period limit 24

8.2. Activating/deactivating phase alignment 25

8.3. Remote start release 25

8.4. Activating/deactivating the single-sensor mode 25

8.5. Activating evaporator single mode 25

8.6. Displaying the heater temperature in single-sensor mode 26

9. Operation 27

9.1. Operating elements 27

9.2. Switching on the light 27

9.3. Switching on the sauna control unit 28

9.4. Starting sauna mode 28

9.5. Starting combi mode 29

9.6. Changing the preset temperature 30

9.7. Changing the preset humidity 30

9.8. Activating standby for remote operation 31

9.9. Setting the preset time 32

9.10. Cancelling the preset time function 33

9.11. Cancelling the post-drying programme 33

9.12. Saunabetrieb ausschalten 33

  33

10. Cleaning and maintenance 34

10.1. Cleaning 34

10.2. Maintenance 34

11. Disposal 34

12. Troubleshooting 35

12.1. Error messages 35

12.2. Low-water display 36

12.3. Fuses 36

13. Technical data 37

EN

Instructions for installation and use p. 5/38

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 in the worst case

may 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 installation and operating instructions can also be found in the

downloads section of our website: www.sentiotec.com/downloads.

Instructions for installation and use p. 6/38

2. Important information for your safety

The sauna control unit Pro B3 has been produced in accordance

with the applicable safety regulations for technical units. However,

hazards may occur during use. Therefore adhere to the following



chapters. Also observe the safety information for the devices con-

nected.

2.1. Intended use

The sauna control unit Pro B3 is used exclusively for operating and

controlling the sauna functions in accordance with the technical data.

The sauna control unit Pro B3 may only be used for operating and



the combustion test described in paragraph 19.101 of EN 60335-

2-53. If the heater does not meet this requirement, an appropriate



5.8 on page 19).

The sauna control unit Pro B3 may only be used for operating and

controlling 3 heating circuits with a maximum heating capacity of

3.5 kW per heating circuit. The maximum evaporator capacity totals

3.5 kW.

Any use exceeding this scope is considered improper use. Improper

use can result in damage to the product, in severe injuries or death.

EN

Instructions for installation and use p. 7/38

2.2. Safety information for the installer





Work on the sauna control unit may only be performed when the

power has been disconnected.

 



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 mm2 and 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.

Instructions for installation and use p. 8/38

2.3. Safety information for the user

The sauna control unit must not be used by children under

8 years old.

The sauna control unit may only be used by children above 8 years

old, by persons with limited psychological, sensory or mental

capabilities or by persons with lack of experience/knowledge:

– 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 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 the preset time function or the stand-by

mode for the remote start.

For your own safety, consult your supplier in the event of prob-



instructions.

EN

Instructions for installation and use p. 9/38

3. Product description

3.1. Scope of delivery

Sauna control unit

Heater sensor with integrated excess temperature fuse

Installation material

Wire jumper for bridging terminals V1 and Wm for combi heaters without



3.2. Optional accessories

Bench sensor (item number: O-F2)

Humidity temperature sensor (item number: O-FTS2)

Power booster (item number: O-S2-18 / O-S2-30)

 

pronet web server (item number: PRO-NET)

3.3. Product functions

The sauna control unit Pro B3 features the following functions:

Regulation of combi heaters with a heating output of up to 10.5 kW and

evaporator output of up to 3.5 kW in the temperature range spanning 30 °C

to 110 °C and a humidity range spanning 5 % to 100 %.

A power booster allows the maximum contact rating to be increased from

10.5 kW to 18 kW or 30 kW.

Remote start function

Preset time function (up to 24 hours)

Automatic heating period limiter

The sauna control unit shuts down automatically after the maximum heating

period for safety reasons. The maximum heating period can be set to 6 h,

12 h, 18 h or 24 h.

Post-drying programme

-

cally to prevent mould or rot from forming in the sauna room. This involves

heating the sauna room to 80 °C with the fan running for 30 minutes.

Instructions for installation and use p. 10/38

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



3.4. Sauna operating modes

The sauna control unit Pro B3 provides two operating modes, sauna mode and

combi mode.

Sauna mode

Dry heat is provided in sauna mode. The temperature in the room is high (80 to

100 °C) The humidity level of maximum 10 % is low.

Combi mode

The evaporator operates along with the sauna heater in combi mode. The

temperature in the sauna room is lower (approx. 40 to 65 °C) than in sauna

mode, with the relative humidity being considerably higher, spanning 35 % to

approximately 70 %. The maximum humidity level which can be set depends on

the temperature of the sauna. The higher the sauna temperature, the lower the

maximum humidity level which can be set.

3.5. Sensor operating modes

The sauna control unit can be operated with one or two sensors. A temperature

sensor (bench sensor, F2) or a humidity sensor (FTS2) can be used as the

second sensor.

Single-sensor mode (F1)



time (see 8.3. Activating/deactivating the single-sensor mode on page 25).

In single-sensor mode, the sauna control unit is operated with the heater sensor

with excess temperature fuse (F1) only. This is included in the scope of delivery.

EN

Instructions for installation and use p. 11/38

In single-sensor mode, the sauna control unit only displays the set temperature

as standard. The actual temperature is not displayed. Should the sauna control

unit display the temperature above the heater (F1) as an actual temperature in



8.5. Displaying the heater temperature in single-sensor mode on page 26)

The maximum humidity level which can be set is based on the temperature above

the heater, and the humidity is timed. Only the set value for the humidity level (in

% of relative humidity) is displayed by the sauna control unit. The actual humidity

level in the sauna room when humidity is timed depends on the size of the room

and the evaporator capacity, and may deviate from the set value.

Two-sensor mode with bench sensor (F2)

In two-sensor mode with bench sensor, a second temperature sensor (bench

sensor) is installed above the rear sauna bench. The sauna control unit displays

the temperature measured by the bench sensor as the actual temperature.

In two-sensor mode with bench sensor, the humidity is timed. Only the set

value for the humidity level (in % of relative humidity) is displayed by the sauna

control unit. The actual humidity level in the sauna room when humidity is timed

depends on the size of the room and the evaporator capacity, and may deviate

from the set value.

Two-sensor mode with humidity temperature sensor (FTS2)

When a humidity temperature sensor is used in two-sensor mode, the sauna

control unit displays the temperature which is measured by the humidity tem-

perature sensor as the actual temperature.

In two-sensor mode with humidity temperature sensor, the evaporator is

regulated in accordance with the humidity level measured in the sauna room.

The actual value for the humidity level (in % of relative humidity) is displayed by

the sauna control unit.

Installation instructions, only for experts p. 12/38

4. Installation

4.1. Installing the sauna control unit

Observe the following points when installing the sauna control unit:

The sauna control unit must be installed outside the sauna room or in accord-

ance 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 is 0.5 mm2.

The length of the heater sensor wires may NOT exceed 10 m.

ATTENTION!

Sources of interference can have a negative eect 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).

EN

Installation instructions, only for experts p. 13/38

82

80

34

175

145

34

43

40

Fig. 1 Position of the attachment device and the installation holes

(dimensions in mm)

C

To install the sauna control unit, perform the following steps:

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 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 Phillips-head screws using the at-

tachment device A as an aid (see Fig. 1).

4. Screw two Phillips-head screws (16 mm) into the lower fastening holes B

(see Fig. 1).

A

B

Fig. 2 Removing the cover from the housing

Installation instructions, only for experts p. 14/38

4.2. 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. 3):

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. 3.

4. Place the connection panel 2 crossways (as shown in Fig. 3) in the heater

sensor half-shells.

5. 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.

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 Phillips-head screws (9 mm)

4 Heater sensor

5 Heater sensor wires

6 Wood screws (16 mm)

Fig. 3 Installing the

heater sensor

red

white

red

EN

Installation instructions, only for experts p. 15/38

4.3. Installing bench sensor F2 (optional)

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.

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.

4.4. Installing the humidity temperature sensor FTS2 (optional)

The humidity temperature 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 must be maintained.

To install the humidity temperature sensor, perform the following steps:

1. Lay the two 5-pin bench sensor wires in the wall of the sauna room, leading



sensor wires using wire clips.

2. Install the humidity temperature sensor to 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.

Installation instructions, only for experts p. 16/38

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 evaporator capacity totals 3.5 kW.

1

2

4

3

5

6

b

7

8

9

a

c

d

e

f

1 Low-voltage connection area

2 

remote start and sensor wires

3 Function selection switch

4 Cable bushing for F2 and FTS2 sensors

5 Cable bushing for F1 sensor

6 

and remote start

7 Cable bushing for evaporator cable

8 Cable bushing for heater wire

9 Cable bushing for power supply cable

a Cable bushing for power booster

b Cable bushing for lights and fan

c Terminal strip for heater and evaporator

and power supply cable

d Terminal strip for lights and fan

e Terminal strip for power booster

f Connection area for 230 V / 400 V

g Earth rail

h RJ45 socket for RS-485 and pronet

g

h

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