Sentiotec Pro C2 Kasutusjuhend

Version 09/23 Ident no 1-026-969

INSTRUCTIONS FOR INSTALLATION AND USE

English

EN

DE

FR

IT

NL

SV

FI

Sauna control unit

PRO C2 / PRO C3

PRO-C3 / 1-015-451

PRO-C2 / 1-015-448

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 features 9

3.4. Sauna operating modes 11

3.5. Sensor operating modes 11

4. Installation 13

4.1. Installing the sauna control unit 13

4.2. Installing the heater sensor F1 with overheat cut-out 15

4.3. Installing bench sensor F2 (optional) 16

4.4. Installing humidity/temperature sensor FTS2 (optional, PRO C3 only)

16

4.5. Installing the foil sensor (optional) 16

5. Electrical connection 17

5.1. Connecting the power supply cable, heater and vaporizer 18

5.2. Connecting the light 18

5.3. Connecting the fan (optional) 18

5.4. Connecting the additional output (optional) 19

5.5. Connecting the power booster (optional) 19

5.6. Connecting the heater sensor F1 19

5.7. Installing bench sensor F2 (optional) 20

5.8. Connecting the humidity/temperature sensor FTS2 (optional,

PRO C3 only) 20

EN

5.9. Connecting the foil sensor (optional) 20

5.10. Connectingthesafetyshut-o/doorsensor 21

5.11. Remote start 21

5.12. Status output 21

5.13. Finishing the installation 21

6. Testing 22

7. Connection diagram 23

8. Commissioning 24

8.1. Setting the function selection switch 24

8.2. Settings in the technician menu 26

9. Controls 31

9.1. Description of the operating elements 31

9.2. The function selector 31

10. Operation 32

10.1. Switching on the light 32

10.2. Switching on the sauna control unit 32

9.3. The intensity selector 32

10.3. Starting sauna mode 33

10.4. Starting Combi mode (PRO C3 only) 33

10.5. Starting additional output 34

10.6. Switching on the light 36

10.7. Starting the fan 37

10.8. Setting the preset time 37

10.9. Cancelling the preset time feature 38

10.10. Setting the duration 38

10.11. Activating standby for remote operation 39

10.12. Changing the preset values 40

10.13. Stopping the post-drying programme 40

10.14.Switchingothesaunacontrolunit 40

11. User programs 41

11.1. Preset user programs 41

11.2. Creating your own user programs 41

12. The Eco-function 42

13. Cleaning and maintenance 43

13.1. Cleaning 43

13.2. Maintenance 43

14. Disposal 43

15. Troubleshooting 44

15.1. Error messages 44

15.2. Low-water display (PRO C3 only) 45

15.3. Fuses 45

16. Technical data 46

EN

Instructions for installation and use p. 5/47

1. About this instruction manual

Read these installation and operating instructions carefully and keep them within

reach of the sauna control unit. This ensures that you can refer to information on

safety and 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. 6/47

2. Important information for your safety

The PRO C2 / PRO C3 sauna control unit has been manufactured

in accordance with the applicable safety regulations. However,

hazards may arise during use. Therefore adhere to the following

safetyinformationandthespecicwarningnoticesintheindivid-

ual chapters. Also observe the safety information for the devices

connected.

2.1. Intended use

The PRO C2 / PRO C3 sauna control unit is used exclusively for

operating and controlling the sauna functions in accordance with

the technical data.

The PRO C2 / PRO C3 sauna control unit may only be used for

operatingandcontrollingasaunaheaterwhichhasbeencertied

as satisfying the combustion test described in paragraph 19.101 of

EN 60335-2-53. If the heater does not meet this requirement, an

appropriate safety precaution must be taken (for example: Safety

shut-o/door-opensensor,see5.10 on page 21).

The PRO C2 / PRO C3 sauna control unit may only be used for

operating and controlling 3 heating circuits with a maximum heating

output of 3.5 kW per heating circuit. The maximum additional out-

put totals 3.5 kW. The maximum vaporizer output (PRO C3 only)

is 3.5 kW.

Any use exceeding this scope is considered improper use. Improper

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

EN

Instructions for installation and use p. 7/47

2.2. Safety information for the installer

●Installationmayonlybeperformedbyaqualiedelectricianor

similarlyqualiedperson.

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

power has been disconnected.

●A fully disconnecting all-pole isolating device compliant with

overvoltagecategoryIIImustbettedonsite.

●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 issued by the sauna manufacturer. The ambient

temperature must be within a range spanning -10 °C to +40 °C.

●The heater sensor must be installed in such a way that it is not

aectedbyinowingair.

●The heater supply cable must have a minimum cross-sectional

area 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-

lemsthatarenotexplainedinsucientdetailintheinstallation

instructions.

Instructions for installation and use p. 8/47

2.3. Safety information for the user

●The sauna control unit must not be used by children under 8 years

of age.

●The sauna control unit may be used by children over 8 years of

age, by persons with limited psychological, sensory or mental

capabilities or by persons with lack of experience/knowledge,

but only if:

– They are supervised.

– 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.

● Forhealthreasons,donotusethesaunawhenundertheinu-

ence of alcohol, medication or drugs.

● Makesurethatnoammableobjectshavebeenplacedonthe

sauna heater before the sauna control unit is switched on.

● Makesurethatnoammableobjectshavebeenplacedonthe

sauna heater before activating the preset time function or the

standby mode for remote start.

●Makesurethatnoammableobjectshavebeenplacedonor

in front of the infrared heater before the sauna control unit is

switched on.

●Makesurethatnoammableobjectshavebeenplacedonor

in front of the infrared 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-

lemsthatarenotdescribedinsucientdetailintheoperating

instructions.

EN

Instructions for installation and use p. 9/47

3. Product description

3.1. Scope of delivery

●Sauna control unit

●Heater sensor with integrated overheat cut-out

●Installation material

3.2. Optional accessories

●Bench sensor (1-009-231 / O-F2)

●Humidity/temperature sensor (1-010-081 / O-FTS2)

●Foil sensor (1-014-445 / P-ISX-FF)

●Power booster (1-008-779 / O-S2-18, 1-009-280 / O-S2-30)

● Cut-orockerswitch(SFE-xxxxx)

●Home door sensor (1-052-723 / SAB00103)

● MySentioWi(1-053-313/S-WIFI01)

●MySentio Remote (1-053-314 / S-WIFI02)

3.3. Product features

The sauna control unit Pro C2 features the following functions:

●Regulation of sauna heaters with a heating output of up to 10.5 kW in the

temperature range spanning 30 °C to 110 °C.

●A power booster allows the maximum switching capacity to be increased from

10.5 kW to 18 kW or 30 kW.

●Optional dimming or switching of a cabin light (up to 100 W)

●Optional modulation or switching of a fan (up to 100 W)

●Remote start function

●Door monitoring system

●Status output

●Preset time function (up to 24 hours)

●Automatic heating time limit

The sauna control unit shuts down automatically after the maximum heating

time for safety reasons. The maximum heating period can be set to 6 h, 12 h,

18 h or 24 h.

Instructions for installation and use p. 10/47

●Auxiliary output

Either for dimming (up to 500 W), switching (up to 3.5 kW) or regulating the

sauna cabin temperature via the additional output.

The additional output has no overheat cut-out. For this reason, only intrinsically

safe devices should be operated using the additional output.

– If infrared heaters are connected to the additional output, they must

have an overheat cut-out. We recommend using the following infrared

heaters:

●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

– 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

in the technician menu (see 8.2. Settings in the technician menu 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

●User programs

The user programs enable favourite sauna settings to be saved and accessed

again.Thereare5presetuserprogramsavailablewhichcanbemodied

according to user requirements.

●Post-drying program

After operation in combined mode, the post-drying program starts automatically

to prevent mould or rot from forming in the sauna cabin. This involves heating

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

●Overheat cut-out

The overheat cut-out is installed in the housing for the heater sensor. If a

defect causes the sauna heater to continue heating after reaching the pre-

ferredtemperature,theoverheatcut-outswitchesthesaunaheateroata

temperature of around 139 °C.

PRO C3

Same functional scope as the PRO C2, with the following additional features:

●Regulation of combi heaters with a heating output of up to 10.5 kW and va-

porizer 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 %.

EN

Instructions for installation and use p. 11/47

●Post-drying program

After operation in combined mode, the post-drying program starts automat-

ically to prevent mould or rot from forming in the sauna cabin. This involves

heating the sauna cabin to 80°C with the fan running.

The duration can be set from OFF - 60 minutes.

3.4. Sauna operating modes

The sauna control unit PRO B2 enables sauna mode. The sauna control unit Pro

C3 provides two operating modes, sauna mode and combi mode.

Sauna mode

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

100°C). The humidity is low (no more than 10%).

Combi mode

In combined mode, the vaporizer operates along with the heater. The temper-

ature in the sauna cabin is lower (around 40 to 65 °C) than in sauna mode, but

the relative humidity is much higher, ranging from 35% to 70%. The maximum

humidity that 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

(see characteristic curve on page 12).

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)

Single-sensor mode must be activated in the technician menu (see 8.2. Settings

in the technician menu on page 26).

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

with overheat cut-out (F1) only. This is included in the scope of delivery.

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

standard. The actual temperature is not displayed. If the sauna control unit is to

display the temperature above the heater (F1 sensor) as the actual temperature

in single-sensor mode, this must be activated during commissioning (see 8.2.

Settings in the technician menu on page 26).

Instructions for installation and use p. 12/47

The maximum humidity level which can be set in single-sensor mode 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 in the sauna cabin when the humidity is timed depends

onthesizeofthecabinandthevaporizeroutput,andmaydierfromthesetpoint.

Two-sensor mode with bench sensor (F2)

Two-sensor mode is the factory setting.

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 in the sauna cabin when the humidity is timed depends

onthesizeofthecabinandthevaporizeroutput,andmaydierfromthesetpoint.

Two-sensor mode with humidity/temperature sensor (FTS2)

Two-sensor mode is the factory setting.

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 vaporizer is regulated

in accordance with the humidity level measured in the sauna cabin. The sauna

control unit displays the actual humidity (in % relative humidity) in the sauna cabin.

Temperature °C

Relative humidity %

EN 60335-2-53:2011; characteristic temperature / relative humidity for proper use.

EN

Installation instructions, only for experts p. 13/47

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 cabin 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 cables supplied with

the unit, which are heat-resistant up to 150°C.

ATTENTION!

Damage to the unit

The sauna control unit is resistant to splashing water, but direct contact with

water could still damage it.

●Install the sauna control unit in a dry place at which a maximum humidity of

95% is not exceeded.

The sensor leads may be extended under the following conditions:

●A silicon cable resistant to temperatures up to 150 °C is used.

●The minimum cross-sectional of the cable is 0.5 mm2.

●The heater sensor cables may NOT be longer than 10 m.

ATTENTION!

Interference can impair signal transmission

●Route all sensor cables separately from other mains cables and control cables.

●Protect cables with only one layer of insulation by using a conduit (double

insulation).

Installation instructions, only for experts p. 14/47

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 cross-head screws (16 mm) into the wall of the sauna at a height

of approx. 1.70 m and leaving a protruding length of 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

EN

Installation instructions, only for experts p. 15/47

4.2. Installing the heater sensor F1 with overheat cut-out

Note the following points when installing the heater sensor:

●The heater sensor must be installed on the rear of the heater, above the

middle of the sauna heater. A distance of about 15 cm from the ceiling of the

cabin must be maintained.

●Theheatersensormustbeinstalledinsuchawaythatitisnotaectedby

inowingair.

To install the heater sensor, perform the following steps (see Fig.3):

1. Route the two 2-pole heater sensor cables in the wall of the sauna cabin

totheinstallationlocationoftheheatersensorandaxtheheatersensor

cables using cable clips.

2. Pull the two half-shells 1 of the heater sensor apart.

3. Connect the four connections for the heater sensor cable 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 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

6 supplied (16 mm).

1 Heater sensor half-shells

2 Connection panel

3 Cross-head screws (9 mm)

4 Heater sensor

5 Heater sensor leads

6 Wood screws (16 mm)

Fig.3 Installing the

heater sensor

Red

White

Red

Installation instructions, only for experts p. 16/47

4.3. Installing bench sensor F2 (optional)

The bench sensor must be installed on the wall of the cabin above the rear bench

seat. A distance of about 15 cm from the ceiling of the cabin must be maintained.

To install the bench sensor, carry out the following steps:

1. Route the 2-pole bench sensor lead in the wall of the sauna cabin to the

mountinglocationofthebenchsensorandaxthebenchsensorleads

using cable clips.

2. Pull the two half-shells of the bench sensor apart.

3. Connect the two connectors for the bench sensor lead 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 cabin using the two sup-

plied wood screws (16 mm). Maintain a clearance of 15 cm from the roof

of the sauna cabin.

4.4. Installing humidity/temperature sensor FTS2 (optional,

PRO C3 only)

The humidity/temperature sensor must be installed on the wall of the cabin above

the rear bench seat. A distance of approx. 15 cm from the ceiling of the cabin

must be maintained.

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

1. Route the 5-pole sensor cable in the wall of the sauna cabin to the mount-

ingpositionofthehumidity/temperaturesensorandaxthesensorleads

using cable clips.

2. Install the humidity/temperature sensor to the wall of the sauna cabin using

the two supplied wood screws (16 mm). Maintain a clearance of 15 cm to

the roof of the sauna cabin.

4.5. Installing the foil sensor (optional)

If an infrared heat plate is to be connected to an additional output, the P-ISX-FF

foil sensor must be used.

●When installing the foil sensor, observe the operating instructions for the

infrared heating plates.

●Use of a foil sensor must be activated in the technician menu (see 8.2. Settings

in the technician menu on page 26).

EN

Installation instructions, only for experts p. 17/47

5. Electrical connection

ATTENTION!

Damage to the unit

●The sauna control unit 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 vaporizer output (PRO C3 only) is 3.5 kW. The maximum additional

output 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 Terminalstripsforsafetyshut-o,remote

start, status output and sensor cables

3 Function selection switch

4 Cable gland for F2, FTS2 and foil sensor

5 Cable gland for F1 sensor and status output

6 Cableglandforsafetyshut-oandremote

start

7 Cable gland for vaporizer wire and addi-

tional output

8 Cable gland for heater cable

9 Cable gland for power supply cable

a Cable gland for power booster

b Cable gland for light and fan

c Terminal strip for heater and vaporizer wires,

power supply cable and additional device

d Terminal strip for lights and fan

e Terminal strip for power booster

f Connection area for 230 V/400 V

g Earthing bar

h RJ45 socket for RS-485 and MySentio WiFi

g

h

Installation instructions, only for experts p. 18/47

Please observe that in the event of a guarantee claim, a copy of the bill

from the electrician performing the work must be presented.

Observe the following points when connecting the power to the sauna control unit:

●Installation may only be performed by a qualified electrician or similarly

qualiedperson.

●Work on the sauna control unit may only be performed when the power has

been disconnected.

● Theremustbeaxedconnectionfortheelectricalpowersupply.

●A fully disconnecting all-pole isolating device compliant with overvoltage

categoryIIImustbettedonsite.

●Observe the connection diagram (Fig.4) on page 23.

5.1. Connecting the power supply cable, heater and vaporizer

1. Feed the power supply, heater and vaporizer cables (PRO C3 only) through

the cable glands 9, 8, 7 into the connection area for 230 V/400 V f.

2. Connect the cables to the terminal strip c in accordance with the connection

diagram. Follow the operating instructions for each device.

3. If the vaporizer does not feature an automatic low-water indicator, then

perform the following step as well:

●Use the wire jumper enclosed to connect terminal “V1” to terminal “Wm”.

5.2. Connecting the light

1. Feed the light cable through the cable gland b into the connection area

for 230 V/400 V f.

2. Connect the light cable to the terminal strip d in accordance with the con-

nection diagram. Observe the operating instructions for the respective device.

5.3. Connecting the fan (optional)

1. Feed the fan cable through the cable gland b into the connection area for

230 V/400 V f.

2. Connect the fan cable to the terminal strip d in accordance with the connec-

tion diagram. Observe the operating instructions for the respective device.

EN

Installation instructions, only for experts p. 19/47

5.4. Connecting the additional output (optional)

The additional output can, for example, be used for an infrared heater or infrared

heating plates.

1. Feed the connection cable for the additional device through the cable gland

7 into the connection area for 230 V/400 V f.

2. Connect the cables to the terminal strip c in accordance with the connec-

tion diagram. Observe the operating instructions and safety information for

the respective device.

WARNING!

Risk of re

The additional output has no overheat cut-out. For this reason, only

intrinsically safe devices should be operated using the additional output.

●If infrared heaters are connected to the additional output, they must

have an overheat cut-out.

●If infrared heating plates are connected to the additional output, the foil

sensor P-ISX-FF must be used, and must be activated in the technician

menu (see 8.2. Settings in the technician menu on page 26).

5.5. Connecting the power booster (optional)

1. Feed the cable for the power booster through the cable gland a into the

connection area for 230 V/400 V f.

2. Connect the cable for the power booster to the terminal strip e in

accordance with the connection diagram. To do so, use terminal

“ST1” for the safety circuit, and terminal “ST2” for the control circuit.

Follow the operating instructions for each device.

5.6. Connecting the heater sensor F1

1. Feed the wires for the heater sensor through the cable gland 5 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.

Installation instructions, only for experts p. 20/47

5.7. Installing bench sensor F2 (optional)

1. Feed the wires for the bench sensor through the cable gland 4 into the

low-voltage connection area 1.

2. Connect the wires for the bench sensor to the terminals labelled “F2” in

terminal strip 2.

5.8. Connecting the humidity/temperature sensor FTS2 (optional,

PRO C3 only)

1. Feed the wires for the sensor through the cable gland 4 into the low-voltage

connection area 1.

2. Connect the wires for the temperature sensor to the terminals labelled “F2”

in terminal strip 2.

a. the black wire to the right terminal.

b. the brown wire to the left terminal.

3. Connect the wires for the humidity sensor to the terminals labelled “+ S -”

in terminal strip 2.

c. the green wire to terminal “+”.

d. the orange wire to terminal “S”.

e. the red wire to terminal “-”.

5.9. Connecting the foil sensor (optional)

1. Feed the wires for the sensor through the cable gland 4 into the low-voltage

connection area 1.

2. Connect the sensor cables for the sensor to the terminals labelled “FF” in

terminal strip 2.

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