HARVIA C150VKK Sauna Control Unit Instruction Manual
- June 3, 2024
- HARVIA
Table of Contents
HARVIA C150VKK Sauna Control Unit
ContRoL UnIt C150VKK
Control unit C150VKK is intended for the control of electric heaters fitted with 2 series parallel con-nectors for use in saunas with heater output up to 17 kW. The control unit regulates the temperature in the sauna room based on information given by the sen-sor. The temperature sensor and the overheat pro- tector are located in the temperature sensor box. The temperature is sensed by an NTC thermistor and the overheat protector can be reset (see fig-ure 13). Mechanical damage to the temperature sensor or overheating limiter circuitry (power failure/short circuit) will cause an error message (Er1, Er2 or Er3) to appear in the display unit in the control centre, and the power to the heater will be cut off.
- Er1: power failure in the temperature sensor circuit
- Er2: temperature sensor short-circuited
- Er3: overheating limiter circuit cut off
The error message will disappear after the malfunction has been corrected.
technical data
- maximum setting temperature in the control unit’s display is 110 °C, setting precision ±1 °C maximum temperature display is 125 °C
- dimensions: width 250 mm, height 223 mm and depth about 70 mm
- weight approx. 1.4 kg
thermostat:
- temperature sensor NTC thermistor 22 kΩ/ T=25 ºC resettable overheating limiter
- dimensions (mm): 51 x 73 x 27
- weight 175 g with leads (4 m)
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. The control unit is a device for controlling the heater according to the timer switches (ON/OFF) and the temperatures registered by the thermostat’s sensors. The timer switches can be controlled from the control unit by either pressing the key manu-ally (3) or by pre-setting the time using the weekly timer (2). The timer switch may also be set remotely using a separate time switch, a switching device connected to a telephone line or with a manually controlled switch. Remote control mode comes into force automatically when the normal switch contact points short- circuit the low-tension control line. The control unit also emits a 24 volt direct current signal that the heater is on and ready for use, for example
to the indicator lamp (max 1 W).
Normally the control unit is used either by means of the weekly timer or
remote control. There can be no mix of functions as they are prioritized
equally and can muddle up each others’ functions. The manual key (3), however,
allows the heater to be switched on in exceptional circumstances and
programmed timings consequently need to be changed.
Main Switch (1)
The main switch (1) connects power to the con-trol unit’s electronics. the
main switch must al-ways be in the on position, so that the heater can be
switched on by means of the manual key (3), when so desired, by remote control
or by means of the programmed weekly timer. The display screen shows when the
power is on and waits a few sec-onds to indicate the temperature of the sauna
room until “OFF” appears in the screen. The unit is now ready to control the
heater either on site from the control unit itself (manually/weekly timer) or
by re-mote control. The main switch functions like an emergency OFF switch as
power to the heater can be disconnected by selecting position “0“ whether the
heater has been switched on manually or with the timer. The weekly timer
(Weektimer) is powered sepa-rately from the main switch. The control unit has
a backup battery, so power failures do not affect its functions. The weektimer
does not use the battery when the control unit is connected to power out-let.
The battery lasts approx. 2 years if the weekly timer is not powered through
the control unit at all. If the battery is empty and a power failure exceeds 1
minute, the programs are erased. If the control unit is controlled by remote
control, the control unit will continue to switch the heater on and off
normally even after a power failure.
Weekly timer (Weektimer) (2)
For each heating period, an on-timing program and an off-timing program is
needed. The timing programs are saved in memory in pairs. The memory can hold
up to 20 timing programs (10 on/off pairs).
Weekly timer’s Display and Buttons (fig. 2)
The weekly timer is in basic mode.
- clock time
- summer time symbol
- time display mode
- weekday (Mon=1, Tues=2,
- Wed=3, Thurs=4, Fri=5,
- Sat=6, Sun=7)
- heater’s on-time during present day (numbers 0–24 represent clock times)
- current state of control (on /off )
- operating mode (manual/timing program)
- value increase [+] and selection
- of operating mode [ ]
- value decrease [–]
- restore factory defaults [Reset]
- select summer time [+1 h]
- open menu/return to basic mode [Menu]
- confirm/continue to next setting [Ok]
Clock time and Weekday (fig. 3)
Press [Menu] or [Reset] to open the settings menu.
note! Pressing [Reset] will erase the memory.
- Set time display mode (24 h or AM/PM) and press [Ok].
- Set minutes and press [Ok].
- Set hours and press [Ok].
- Set weekday and press [Ok].
- Select a factory-set timing program pattern (P01, P02, P03) or empty memory (P–). (Only available if you pressed [Reset] button to open the menu.) Press [Ok] to continue to timing programs or [Menu] to return to basic mode.
new timing Program Pair (fig. 4)
Press [Menu] to open the settings menu. Press [Ok] four times to skip clock
time and weekday settings.
- Select an empty timing program slot (line dashes at the place of clock time). On-timing programs have odd numbers.
- Set hours and press [Ok].
- Set minutes and press [Ok].
- Set weekday(s). Options: single day, workdays, workdays+Saturday, weekend. Press [Ok] to continue to program the off-timing program.
- Off-timing programs have even numbers. Press [Ok].
- Set hours and press [Ok].
- Set minutes and press [Ok].
- Set weekday(s). The alternatives depend on the weekday setting of the on-timing program. Press [Ok] to continue to the next timing program or [Menu] to return to basic mode.
Changing a timing Program (fig. 5)
Press [Menu] to open the settings menu. Press [Ok] four times to skip clock time and weekday settings.
- Select the timing program you want to change. On-timing programs have odd numbers and offtiming programs have even numbers.
- Set hours and press [Ok].
- Set minutes and press [Ok].
- Set weekday(s). Press [Ok] to continue to the next timing program or [Menu] to return to basic mode.
Clearing a timing Program Pair (fig. 6)
Press [Menu] to open the settings menu. Press [Ok] four times to skip clock
time and weekday settings.
- Select the on-timing program of the heating period you want to clear.
- Set line dashes (–) at the place of hours and press [Ok].
The on-timing program and the corresponding offtiming\ program are cleared from the memory.
Summer time
Set the summer time (one hour added to the clock time) on as follows:
- Press and hold [+1 h]-button and wait until the summer time symbol starts blinking in the display.
- Release the button when the symbol shows. When setting the summer time off do the same but release the button when the symbol does not show.
Manual on/off
Using the weekly timer’s [ ]-button you can turn the heater on instantly at
any time. The heater will shut off according to next off-timing program or
when you press the ]-button again or when the maximum on-time runs out.
note! Use primarily the manual switch (3) in the control unit. See item 2.3.
Manual Switch (3)
heater on Instantly
If you press the manual switch (3) once briefly (while the control unit is switched on), the heater comes on immediately for half an hour; there is a reading of 0.5 in the screen and indicator light 8 comes on (heater on). You can increase the time the heater is on by pressing the switch once for every half hour required. For example, six pushes of the button will turn the heater on for a duration of three hours. You can select a duration of up to a maximum of twelve hours. After the selection is made the screen displays the amount of time left for the unit to remain on alternately with the temperature of the sauna and the relevant indicator lights 6 and 7 flash in synchronised rhythm. The programmed time left diminishes on screen automatically at intervals of 1/10 of an hour, or every six minutes.
heater off
If you have turned the heater on in the manner described in 2.3.1., you can
switch it off before the programmed time has expired by pressing manual button
3 and holding it in for two seconds. This will turn the heater off, indicator
light 8 will go out, and “OFF“ will appear in the screen.
Display Screen (4)
When the control unit is in basic mode (power on) the screen (4) displays the
word “OFF“, which is the symbol that denotes that the heater is turned off. In
function mode, when the heater has been switched on manually, the screen
displays both the on-time left and the temperature of the sauna room
alternately. The numerals in the screen will show only the temperature in the
sauna room if the heater has been switched on by means of the weekly timer
program or by remote control.
temperature Regulator (5)
The desired sauna temperature is set by means of the temperature regulator (5)
in the screen (4). By turning it clockwise you increase the temperature, and
by turning it anti-clockwise you lower it. When the regulator is turned to the
left or right the set temperature automatically becomes visible in the screen
and indicator light 6 flashes. The maximum temperature you can set is 110 °C.
Indicator Light, Red (6)
When indicator light 6 is on continuously, the display shows the temperature
of the sauna. If the system has had to be switched on manually, the red and
the green indicator lights come on alternately. When the red light is on the
screen displays the temperature and when the green light is on the time left
for the heater to be on is shown. When the temperature is being set using the
regulator (5) the indicator light flashes rapidly.
Indicator Light, Green (7)
When indicator light 7 is on, the screen displays the time set for the heater
to be on.
Indicator Light, Red (8)
When indicator light 8 is on, the heater is turned on. note! Make sure that
the control unit disconnects power from the heater when the timer’s program
timings are completed.
InStRUCtIonS FoR InStALLAtIon
In accordance with the regulations in force, connect-ing the control unit and
the thermostat to the mains may only be carried out by a suitably authorised,
professional electrician. the person responsible for installing the control
unit must deliver, along with the heater device, the following instructions
for installation and use and give the person who will be in charge of the
heater and the control centre the necessary training before leaving the
installed device in his/her care!
Installation of the Control Unit C150VKK The control unit should be mounted
outside the sauna room, in a dry area.
note! the control unit may not be the embedded in the wall structure. (Fig.
7.)
Removing the top Plate
The top plate should be removed before you mount the control unit on the wall.
The top plate comes off by pressing down on the locking strip at the upper
edge of the plate, using a screwdriver, for example. The hole blanks for the
connecting wires in the base plate should be pierced in the places where the
ca-bles are to be connected. (Fig. 7.)
Fastening the Device to the Wall
There are holes for three (3) screws in the base plate, for fastening the
centre to the wall. If neces-sary, drill a hole in the wooden wall using a 2.5
mm bit. If you have to fasten the device to a stone wall, drill a 6 mm hole
for a Rawlplug to its complete length. Hit the Rawlplug into the hole and
screw fastening screw 1 into place with a screwdriver, until approx. 7 mm of
the screw-head is left visible. The electric cables entering and exiting the
control unit should be passed through the open holes. The device can be
suspended by the upper screw when you have ensured that the screw-head is
locked into the narrow notch of the hole in the base plate.
Holding the device in the upright position, mark the locations for the two lower fastening screws (2 and 3) and follow the same procedure, except that these screws should be screwed tightly in as far as they go. (Fig. 7.)
electrical Connections
Figure 8 shows how the connections are made.
Altering the Basic Settings of the Control Unit
The maximum times you can set the heater to come on from the control unit are
6 h, 12 h, 18 h or con-tinuously. The settings are carried out by means of DIP
switches. The factory pre-set maximum for the
CABLES/KABEL
Type
Typ
| Output
Leistung
| For control unit
Zum Steuer- gerät
mm2
| Fuses
Sicherungen A
| Connecting cable from junction box to heater Anschlusskabel aus der
Anschlussdose zum Ofen (HO7RN-F) mm2
| For sensor
Zum Fühler min mm2
M45E, KV45E| 4,5| 5 x 1,5| 3 x 10| 5 x 1,5| 4 x 0,25
M60E, KV60E| 6,0| 5 x 1,5| 3 x 10| 5 x 1,5| 4 x 0,25
M80E, KV80E| 8,0| 5 x 2,5| 3 x 16| 5 x 2,5| 4 x 0,25
M90E, K9, T9| 9,0| 5 x 2,5| 3 x 16| 5 x 2,5| 4 x 0,25
K10,5, T10,5, F10,5| 10,5| 5 x 2,5| 3 x 16| 5 x 2,5| 4 x 0,25
K11G| 11,0| 5 x 2,5| 3 x 16| 5 x 2,5| 4 x 0,25
K12| 12,0| 5 x 4| 3 x 20| 5 x 2,5| 4 x 0,25
K13,5G| 13,5| 5 x 4| 3 x 20| 5 x 2,5| 4 x 0,25
K15, F15, K15G| 15,0| 5 x 6| 3 x 25| 5 x 2,5| 4 x 0,25
heater to be on is twelve hours. The factory pre-set arrangement may be altered using the two switch lobes on the left side of the DIP switch, as follows (Fig. 9): Using DIP switch 3, you can select which control option to use for turning the heater on: the weekly timer (Weektimer) or remote control. To select con-trol by weekly timer, set the switch to the ON posi-tion, or choose remote control by setting the switch to the OFF position.
note! You must always leave DIP switch 4 set to the on position since the
oFF position is reserved for a special function.
Use of the Control Unit by Remote Control
The control unit can be operated by remote control, either by means of the
ON/OFF function or by elec-trical impulses. The remote control device must
have contact surfaces that are good electrical conductors (e.g. electrical
relay or switch). The connection can also be realised with electronic switch
components. (Fig. 10)
note! Functions are limited by pause time of 6 hours. It prevents the
heater to be switched on again, if the previous heater off -time has passed by
less than 6 hours.
In case you try to switch on the heater during the pause time (6 h), “SAF”
will appear in the display screen.
- the connection controlling the on/oFF function is made at positions 11 and 12 in the connector strip. The ON/OFF function is obtained, for example, by means of the normal ON/OFF switch. The control works by low-tension “short-circuiting“ of the con-trol line, so that the cross-section of the wire in the control line cables is sufficient at 0,5 mm2. In ON/OFF mode the control unit keeps the heater on as long as the control switch’s contact point is closed. If the pre-set time for the heater to be on has not yet shut off power to the heater, opening the control switch’s contact point turns the heater off immediately.
- or the electrical impulse function to work the control switch’s contact points only have to make contact with each other once. The ON function starts from studs 9 and 10 in the connector strip and the OFF function from studs 7 and 8. The control works by low tension as with the ON/OFF function. If the pre-set time for the heater to be on has not yet shut off power to the heater, momentarily clo-sing the control switch’s contact point in impulse function turns the heater off immediately.
note! the engineer must give the customer proper instructions on the functions of the remote control system!
Indicator Lamp
The control unit shows heater setting times by means of an indi-cator lamp (24
V DC), which comes on in the place from which the heater is remotely con-
trolled. The indicator lamp comes on when the heater is on.
Please note! the power of the indica-tor lamp may not be greater than 1 W.
Installation of Sensor Box
To control wall-mount-ed heaters by means of a control centre, the sensor box
con-nected to the centre should be installed on the sauna room wall above the
heater on its centre line, running parallel to its sides, and 100 mm from the
ceiling. See fig. 11. To control heaters fixed to the floor of the sauna by
means of the control unit C150VKK, the sensor box connected to the centre
should be installed on the sauna room wall above the heater, on the heat-er’s
centre line, 100 mm from the ceiling. note! the table also shows the heater’s
maximum distance from the wall on which the sensor box of the ther-mostat has
been installed. The sensor box can also be installed above the heater on the
ceiling, at a distance of 200 mm from the vertical line of the centre of the
heater’s edge. See Figure 12. 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 13. The air flow near an
air vent cools down the sensor, which gives inac-curate temperature readings
to the control unit. As a result, the heater might overheat. The leads
enclosed with the thermostat have silicon wires that can withstand
temperatures of up to +170 °C. The wires can be extended with lower
temperature wires having a corresponding cross-section, as long as you ensure
that after the connection has been made the temperature to the wires does not
rise above +80 °C.
- Sensor’s minimum distance from an air vent
- Reset button for overheat protector