HARVIA C105S Combi Electric Heater Instruction Manual
- June 3, 2024
- HARVIA
Table of Contents
HARVIA C105S Combi Electric Heater Instruction Manual
ContRoL UnIt C105S
General
The purpose of the C105S control unit is to control an electric sauna heater and steamer, or a Combi heater, which is their combined version. The components of the sensor box monitor the functioning of the control unit. The temperature sensor and the overheat protector are located in the sensor box. The temperature is sensed by an NTC thermistor, and there is an overheat protector that can be reset. In case of malfunction, this overheat protector will cut off the heater power permanently (the overheat protector can be reset by pressing the reset button, see Figure 6). The unit is equipped with a temperature sensor and a humidity sensor, both of which must be connected to the unit in accordance with instructions.
technical Information
| Power supply | 400 V 3N AC |
|---|---|
| Load | Max. 10,5 kW |
| Heater control | U, V, W 3500 W/ Phase |
| Steamer control NOTE! ACHTUNG! | W1 3500 WW and W1 alternate when |
the steamer and heater controls are in operation
Safety category| IPX4Mounted outside sauna and washroom area in dry
location.
Duration of preset time| 4 h (can be changed)
Presetting times| 0–12 h
Temperature regulator Sauna• Steamer• Verdampfer| ** 40
ºC–110 ºCHumidity setting determines max. temperature in sauna.
Humidity setting| RH/rF 10 %–95 % when max. temperature is 100 ºC–40
ºCRH/rF
Sensors| 1. Temperature sensor, Overheating limiter (cable 4 m)/
Light switch/| Max. 100 W
Fan switch/| Max. 100 W
ER1 ER2| Temperature sensor measuring circuit broken. Temperature
sensor measuring circuit short-circuited. Kurzschluss im Fix:
Check the wiring and connections from connectors 3 and 4 to the sensor.
---|---
ER3|
| Fix: Press the overheat limit reset button. Figure
6.Check the wiring and connections from connectors 1 and 2 to the sensor.
---|---
ER5 ER6| Humidity sensor’s temperature measuring circuit open
.Temperatur-Messschaltkreis des Feuchtesensors unterbrochen. Fix:
Check the wiring and connections from connectors 5 and 6 to the sensor.
Display shows all the time only the selected humidity value.D Fix:**
Check the wiring from connectors 7, 8, 9 and 10 to the humidity sensor.
InStRUCtIonS FoR USe
Before you switch the heater on check always that there aren’t any things over the heater or in the near distance of the heater.
- Master switch
- Steamer’s dual function control switch
- knob pushed once: steamer on
- knob pushed again: steamer off
- knob turned: select desired relative humidity 20 %–95 %. Indicator light 12 flashes whilst adjustment is made.
- Heater’s dual function control switch
- knob pushed once: heater on
- knob pushed again: heater off
- knob turned: select desired sauna bath temperature. Indicator light 13 flashes whilst adjustment is made.
- Fan switch max. 100 W
- Sauna light switch max 100 W
- Screen. Displays sauna temperature (indicator lamp 13 glows) and humidity (indicator lamp 12 glows) alternatively.
- Indicator lamp glows when water in steamer has run out.
- Indicator light green – steamer on Indicator light flashes – preset time selected
- Indicator light green – heater on Indicator light flashes – preset time selected
- Indicator light glows, when fan is on
- Indicator light glows when sauna lights are on
- When indicator light is glowing humidity count appears in screen
- When indicator light is glowing temperature appears in screen
- When indicator light is glowing preset time appears in screen
Selecting presetting times and duration
of preset time Times can only be selected when the heater and/or steamer
function is switched on (switches 2 and/or 3).
Presetting times
If you wish the heater to come on within a preselected time, keep control
switch (3) pressed down for approximately 3 seconds, and the control unit will
go into timer operation mode. The figure 3.9 (factory-set) will appear in the
screen, which is the duration of the preset time in hours. If you turn the
control switch (3) knob clockwise, the relays disconnect (a clicking sound is
heard), the heater switches off and the presetting time values start to
increase from 0.0 to 18.0. Use the timer setting to show the desired preset
time. The display will gradually count down the hours to zero, when the heater
will come on. Indicator lights 14 (presetting times), 8 (steamer), and 9
(heater) will flash until the heater comes on. The heater will come on
automatically for 3.9 hours after this set time (factory set) unless the
heater is switched off earlier by means of control switch (3) on the control
unit
Duration of preset time
If the dual-function control switch (3) on the control unit is kept pressed
down for 3 seconds the control unit will go into timer operation mode. The
figure 3.9 (factory-set) will appear in the screen, which is the duration of
the preset time in hours. A shorter preset time can be selected by turning the
switch anticlockwise. The values on the screen go from 3.9 down to 0.0. Use
the timer setting to show the desired preset time. The display will gradually
count down the hours to zero, when the heater and/or steamer will switch off.
InStRUCtIonS FoR InStALLAtIon
The control unit should be mounted outside the steam room in a dry location (air temperature >+0 ºC). note! the control unit must not be embedded in the wall structure. See figure 2
Removing the front
The front can be removed by inserting the tip of a screwdriver in the clasp
groove on top. See figure 3.
Fixing the device to the wall
There are holes for three (3) screws on the underside of the control unit,
allowing the device to be fixed to the wall. See figure 4.
Removing the front
Fixing the device to the wall
Instructions for connecting the sensor wires to the terminal strip
Reset button for overheat protector
Mounting the sensors
To control wall-mounted Combi heaters and heaters and steamers as separate
units (Harvia SS20) in the sauna by means of the control unit a temperature
sensor, connected to the unit, must be mounted on the sauna wall above the
heater in line with the midpoint of the heater’s breadth and 100 mm below the
ceiling. The humidity sensor must be mounted on the sauna wall as far away as
possible from the heater and 500–700 mm below the ceiling. When the C105S
control unit is being used to control a Combi heater standing on the floor or
The location of the C105S control unit temperature and humidity sensor boxes when used with wallmounted heaters.
The location of the C105S control centre temperature and humidity sensor boxes when used with heaters standing on the floor
a heater standing on the floor with a separate steamer unit, a temperature sensor, connected to the unit, must be mounted on the sauna wall above the heater in line with the midpoint of the heater’s breadth and 100 mm below the ceiling. The temperature sensor may also be mounted in the ceiling above the heater at a distance of 200 mm from the vertical line from the midpoint of the edge of the heater. note! the table also gives the maximum distance for the heater from the wall in which the temperature sensor has been mounted. note! Do not install the temperature sensor closer than 1000 mm to an omnidirectional air vent or closer than 500 mm to an air vent directed away from the sensor. See figure 8. The air flow near an air vent cools down the sensor, which gives inaccurate temperature readings to the control unit. As a result, the heater might overheat. note! the temperature sensor must not be mounted directly in the way of the steam released from the steamer.
Sensor’s minimum distance from an air vent
3-phase connection C105S + SS20 + heAteR
C105S+KV50Se-KV90Se, t7C-t9C 
1-phase connection/
C105S+KV50Se-KV90Se, t7C-t9C
3-phase connection
Kiukaan tyyppi Typ av aggregat Heater type Ofenmodell| Teho Effekt Power
Leistung (kW)| Effekt av aggregat Heater power Ofen Leistung (kW)| Steamer
Verdampfer (kW)| Kaapelit/Kablar/Cables/Kabel 230/220 V 3~
---|---|---|---|---
Sulakkeet Fuses Sicherungen| Bmm2| Emm2| Fmm2
KV90SE| 9| 3 x 3| 2| 3 x 16A| 2 x 2,5| 3 x 2,5| 3 x 6
KV80SE| 8| 3 x 2,67| 2| 3 x 16A| 2 x 2,5| 3 x 2,5| 3 x 6
KV60SE| 6| 3 x 2| 2| 3 x 10A| 2 x 1,5| 3 x 1,5| 3 x 2,5
KV50SE| 5| 3 x 1,5| 2| 3 x 10A| 2 x 1,5| 3 x 1,5| 3 x 2,5
T9C| 9| 2 x 3,5 + 2| 2| 3 x 16A| 2 x 2,5| 3 x 2,5| 3 x 10
T7C| 7| 3 + 2 + 2| 2| 3 x 16A| 2 x 2,5| 3 x 2,5| 3 x 6
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