Thank you for choosing to buy our OCS B Series Sauna heater, please take the time to read these
instructions before you begin as they contain important information about the installation
and maintenance requirements. OCS B Series Sauna heaters are available from 9kw to 20.1kw
and are equipped with our OC-SB digital controller & special electrical box. With this not only
you can control the temperature and time duration of your sauna bath but also the light and
fan of the sauna room, alter the temperature display between Centigrade and Fahrenheit; as
well as displaying the sauna heater’s 8 status by the 8 LEDs on the controller heating, light, fan,
temperature, waiting, working model status etc. OCS B series sauna heater has Linking functions
and one controller can control many sauna heaters via an electrical box. Every OCS B Series sauna
heater is thoroughly tested before leaving the factory.
2. Important Notes
• Read the manual before installation and operation and then keep it for reference
• This equipment must be installed by competent person
• This equipment must be connected to an all pole isolator of the correct rating
• Disconnect the power supply before exposing electrical connections
• The sauna heater should not be used for any other purpose
• Do not cover the sauna heater or allow contact with ammable materials such as toweling –
Risk of re.
• Do not operate sauna heater without sauna stone
• Do not touch the heater when operational as it is very hot
• When this heater is used in an unsupervised and/or public location with the advanced timer
setting an interlock must be provided for the door
3. Safety Precautions
• Elderly persons, pregnant women, or these suering heart disease, high blood pressure,
diabetes or not in good health are advised to seek medical opinion before using a sauna room;
• Do not smoke in the sauna room;
• Avoid using the sauna room immediately after strenuous exercise;
• Do not use the sauna room when under the inuence of alcohol;
• Leave the sauna room at once if you feel sleepy, sick or uncomfortable;
• Ensure there is good ventilation for the sauna room
• We do not recommend this product is used by children under 16 years old unless they are
supervised by an adult
• This appliance is not intended for use by persons including children with reduced physical,
sensory or mental capabilities or lack of experience unless they have been given supervision
or instruction concerning the use by a person responsible for their safety
• Commercial operators should post a notice of these precautions in a prominent position
4. Electrical connection
A qualied electrician will have no problem installing this system with the provided wiring
schematic and with the help of the circuit diagram mounted inside the respective control unit.
According to the valid regulations, the electrical connection of the sauna heater and the control
box has to be carried out by an authorised electrician. In case of a warranty claim, you are kindly
requested to present a copy of the invoice from the electrician.
4Setting button Preset time and temperature and the setting conrmation
5Increase button Press to increase
6Increase buttonPress to decrease
7Mode buttonChange working mode
8Time display Display working time or waiting time to work
9Temp. display Display temperature
10Light LEDIndictor Led for sauna room lamp
11Model LEDIndictor LED for working mode, on mean under A model ,sauna heater is
working
12Wait LEDIndicator LE D for working mode, on mean under B waiting to work
13Sauna room
Door(interlock)
indicator LED
14High temperature LED indicator LED is on , sauna heater stop work . the sauna room temperature
indicator LED is on: the sauna heater stop working ,there is control signal
to control box main circuit board when the door is open , the default is the
connection switch is downward (opposite side of ON), when the door is open ,
there is on signal to circuit board , the LED is on and sauna heater stop work.
Such as on sauna room door install a switch connect to circuit board , the switch
‘s on or o signal can control sauna heater work or stop. when you need the
switch send o signal to working , the default is ok, when you need the sauna
heater under the on signal to work , just push the switch circuit board to “on”
side”
higher then 120 centigrade . high temperature cut o switch works, when the
temperature in sauna room down to 100 centigrade , and nd out the high
temperature problem then preset the switch by hand
15Fan LEDPress to operate for fan
16Heating LEDOn means the heat element is working
17Stop working LEDindicator LED for stop working , the sauna room temperature exceed the preset
temperature , the heat element pause(when temperature 2 centigrade lower
than preset temperature ,sauna heater will work again,
2BracketBracket
3CoverProtects the electronics
4Heat resistanceDetects temperature
5High Temp cut of switchWhen temperature in
sauna room exceed 120 oC
8. Installation
Important
Prior to installing sauna heater, please refer to Installation handbook and check it as following
points:
• Is the output power and type of the heater suitable for the Sauna Room? See parameter table 1.
(Technical parameter).
• Is the supply voltage suitable for the rated voltage of sauna heater.
• The location of the heater fulls the minimum requirements concerning the distances given in
Fig 7 and chart 8 .and allow for safety and convenience.
• Is the controller & special electrical box suitable for the heater power and control requirements?
• Choose the cable wire according to table 1 and the cable wire can bear high temperature 170
oC (it is recommended to use sillicon rubber cable wire).
• Do not install more than one heater in a sauna room unless twin-heater installations. (Warning:
there must be 400 mm between two heaters when install two).
The heater gets very hot when working. To avoid the risk of accidental contact with the heater, it is
recommended that a heater guard be provided. The guard is made into many kinds of patterns in
accordance with the location places, but some size must be made as the Fig 7 and chart 8.
An electrical supply must do the installation of the heater to ensure safety and reliability. Improper
electrical connection can cause re or electric shock. Refer to g 1a or g 1b (Electrical connection
chart).and g 2
Remove the cover panel and connect power supply wire and control cable through the wire
anchorage to the Terminal as per g 8 and replace the cover panel.
Note: Do not short circuit output from control box to sauna heater
The controller must be installed on an outside wall, not inside the sauna cabin. Ideally the control
box should be installed at a height of approximately 1200mm for ease of use.
Installation method:
• Drill a 40mm diameter hole through the wall.
• Pull the front o the keypad, you may nd it easier with a small at electrical screw driver.
• Pin the control cable (6 cores) to the relevant ports.
• Install the control so it sits at on the wall. Fix using the screw holes 118mm apart.
• Put the keypad cover back on, check the cover is completely on so that all the buttons click
when pushed.
i. Install the temperature sensor as in the diagram opposite
ii. Open the cover with a screwdriver
iii. Fix the bottom of the temperature sensor on to wall with screw
iv. Replace the cover.
Sauna heater, Control box ,controller ,light ,fan and temperature sensor connection drawing (Fig
12) Door interlock install the switch following the manufacturers instructions and connect the
wires back to the control box as shown below.
8.7. Heater Guard (not supplied)
The heater should be guarded against accidental contact with a wooden guard similar to the one
shown below – according to the position of the heater within the cabin it may need to be guarded
on 2 or 3 sides.
Fig 13
Fix the guard in place around the heater by drilling screwing accordingly.
Note:It is important that the top rail of the guard is set at least 30 mm below the rim of the heater such
that it does not receive heat radiation directly from the heater rocks.
8.8. 8. Sauna stones
Do not use the heater without stones, otherwise it may cause a re. Only use the original Sauna stone or
the stone for use in heater. Do not use ordinary stones, which may emit harmful substances, easily break
and do not possess good heating capacity. Wash the stones to clear the dust before putting them into
the heater. Stones of unspecied sizes should not be used.
Put the larger stones at the bottom of stove compartment and the smaller ones on top. Do not pile
them tightly so that air can ow freely. NOTE: Too tightly placed stones decrease working time of the
heater element, the stones should plainly cover the heater element (refer to Pile stones g8). The
diameter of stone is about 3-8cm.
Rearrange the stones in the heater at least once a year or twice if it is in frequent use (maximum
500 hrs). To decide the correct volume of stones in heater, refer to table 1 (Technical parameter )
provided.
8.9. 9. Insulation
The door, ceiling and walls of sauna room must be insulated. For every square meter of wall panel
that is not insulated the size of cabin should decrease by 1.3 cubic meters in relation to the model
of heater. Refer to table 1.
Ensure insulation is water proofed to prevent moisture spreading to the other rooms or wall
structure . Moisture-proong must be placed between panel and heating insulation.
Moisture and thermal proong should be installed from outside to inside, such as:
i. Recommend that the MIN thickness of the thermal insulation in the walls in 50mm and in the
ceiling 100mm.
ii. Aluminum foil laminate is axed over the heating insulation as a moisture-proof.
iii. Leave at least 20mm air slot between moisture-proof Aluminum foil and inside panel.
iv. Leave a slot between wall panel and ceiling to prevent gathering vapor.
8.10. 10. Air ventilation of sauna room
• Mix the cold air with hot air to relieve mugginess when bathing.
• Draw the fresh air around the heater to ventilate the sauna room.
• Move the heater air to the farthest part of sauna room considering air ventilation of sauna
room, the inlet and outlet vent should be installed.
The inlet vent may be installed on the wall below the heater. (g 15a).when using mechanical
ventilation ,inlet vent is placed 50cm above the heater (g 15b) or on the ceiling above the heater
(g 15c).the heavy cold air that blown into sauna room is mixed with the light not air from the
heater ,bringing fresh air for bathers. The recommended inlet should have a diameter of 5—10cm.
The outlet vent should be placed diagonally opposite to the inlet. It is advised the outlet vent is
placed under the platform in sauna room as far as possible from the inlet vent. It can be installed
near the oor, or lead outside through a pipe from the oor going to a vent to the sauna ceiling,
or under the door (to the wash room). In this case, the sill slot must be at least 5cm and it is
recommended there is mechanical ventilation in washroom the size of the outlet should be twice
of the inlet.
stones may smoke slightly and give o a smell – please ensure the sauna cabin is well ventilated.
• Connect to power supply, press “ “key, temp and time windows will display data, LED shows
the sauna’s heating status when the light is on, the temperature of sauna room will rise and will
achieve the preset temperature (the default settings are 70 ℃/158℃, work time is 2 hours) chart 9
9.2. Setting time and temperature:
• The default settings for temperature are: 75oC/167oF. For preset operation time: 2 hours. These
can be adjusted easily, if the electricity supply is lost the controller will return to default settings.
• When the sauna is turned on the time settings will work under A model (A model LED is on),
the time window will display the last time that was set. Press” SET” key the time display window will
ash. press “p ” or “q ” to adjust the time, every press the time will increase or reduce 10 minutes.
once the desired setting is reached press “ MENU/ENTER” the window will stop ashing. You can
adjust from the time from 10 minutes to 8 hours. Note the controller has a memory function, if the
power supply is not cut o the next time you turn on sauna the time you selected will be the default
time.
• To set your heater to come on at a certain time (for example: if you plan to watch a lm and
want the sauna to start heating up half way through so its ready at the end of the lm) you can use
the B model setting which can be set if you press the “MENU/ENTER”” and the time window will
display 4:00, now Press” SET” key the time display window will ash. press “p ” or “q ” to adjust the
time, every press the time will increase or reduce 10 minutes. once the desired setting is reached
press “MENU/ENTER ” the window will stop ashing., when it reaches “0” it will switch over to A Model
and the heater will turn on. (Remember to set the time you want the heater on for on A Model before
setting B Model)
• For quick time adjustment: hold the “p ” or “q ” and it will count continuously up or down,
when it reaches the time you want release and it will stop.
• Temperature: switch button you can switch between centigrade and Fahrenheit.
• To adjust temperature: Press “SET ” once after you nish setting the time or otherwise twice
the temperature window will ash, enter the required temperature by pressing “p ” or “q ” to adjust
- every press will increase or reduce 1OCor 2OF.you can adjust from 50oC-110oC 122oF-230oF once the
required temperature has been set press “ MENU/ENTER” key the window will stop ashing.
9.3. Door Interlock
When used in commercial situations such as public buildings where the countdown timer is set to
come on in advance the door interlock switch must be connected as described in Fig 2 – before the
timer is set to come on in advance the sauna room must be checked by the responsible person to
ensure there is no hazard such as combustible material left over the sauna stove etc – then the sauna
cabin door must be closed before the setting can be made – once the advance timer begins the
countdown sequence if the door is opened the timing will stop and will not restart again until it is
reset.
Sauna & Steam
10. Trouble shooting Guide
Please Note that we recommend a suitably qualied person carries out all repairs.
Trouble description Cause Solutions
There is no display on the
control panel when the on/o
switch is pressed
The controller is on but the
sauna heater doesn’t work
OverHeat LED is on1. The temperature sensor
Door LED is on During the advance timer
There is a problem with;
1.Power supply or
2. Circuit board transformer or
3. Fuse
1 .The sauna heater hasn’t
been connected
2. There is a problem with the
controller
hasn’t been connected
correctly
2. The high tempeature cut o
switch is turned o
countdown sequence ,the
sauna room door has been
opened , the timing stoped
and will not restart again until
it is reset.
1. Chck the power supply. If
the power supply indicator
LED L1 (red) is on check the
wire.
2. Change the controller
1. Check the connection, refer
to page 6 and 12.
2. Change the controller
1. Check the connection to the
temperature sensor.
2. Check if the high
temperature cut o switch is
turned o, i yes, reset by hand
Reset counter down timer
Wait LED is on redSauna heater is under B modePress the Mode button to
We recommend that you inspect the sauna heater on a regular basis for any signs of deterioration
of the condition, pay particular attention to both the fastenings, the condition of the wiring and
the electrical elements.
Note if the rocks have started to crumble this can cause the elements to overheat and they should
be changed for new rocks. We recommend commercial operators to change the rocks at least once
very 12 months.
11.1. Sauna Heaters & Sauna Cabins Maintenance
All Sauna products supplied by Direct Saunas Limited and Oceanic Saunas are for use in an indoor
environment such as a domestic house or a club building and should not be used in any other
circumstances.
11.2. Sauna Maintenance
Dependant upon how regularly the sauna cabin is being used a series of maintenance checks
should be performed on the sauna cabin and sauna heater to ensure that they are kept in a good
state of repair.
For commercial users we recommend these inspections be conducted on a monthly basis by a
member of the maintenance sta and detailed records kept.
For domestic use these checks should be carried out every 6 months.
Any obvious deterioration should be noted immediately if noticed in between maintenance checks
and should be resolved before continuing use of the products.
Under no circumstances do we recommend operating the sauna cabin if any electrical wiring
is considered to be hazardous, please contact your electrician or our technical department for
assistance.
11.3. Maintenance Checks
Please note all maintenance checks should be preformed whilst the sauna cabin and sauna heater
are cold.
11.4. Sauna Heater:
Ensure the heater has been correctly disconnected from the mains electricity before these checks
are conducted
1) Check sauna elements for signs of deterioration. Report any signs of deterioration to the
supplier
2) Make sure all rocks are placed correctly onto the heater elements to ensure an adequate
airow around the elements. Note that the rocks will gradually crumble and settle around the
elements which can then cause overheating, this may lead to early failure or even melting of the
elements.