Aqua ZL Series User manual

AQUA Sauna Heater
2 E002B-23-10-12
Foreword
Thank you for choosing to buy our Aqua Sauna heater, please take the time to read these instructions
before you begin as they contain important information about the installation and maintenance requirements.
ZL Series Sauna heaters are available in specifications 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. The OC-SB control can also heat two
separate heaters in the same room.
Every ZL Series sauna heater is thoroughly tested before leaving the factory.
IMPORTANT
•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 flammable materials such as towels –Risk of fire.
•Do not operate the sauna heater without sauna stones
•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[Read further for more info]
SAFETY PRECAUTIONS FOR SAUNA
•Elderly persons, pregnant women, or these suffering 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 underthe influence 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

AQUA Sauna Heater
E002B-23-10-12 3
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
Charpter One:Specification
1. Parameter and size of sauna heater (chart 1)
Code Heater
model
Input
KW
Heating
element
n×KW
Sauna
room
volume
min max
m3
Voltage
VAC
Phase
P
Connecting cable
n×mm2
Stones
kg
Size
mm
ZL9 0CS090B 9.0 6×1.5
(H1-h6) 913 400 3N Terminal1: 5×1.5 Terminal2: 5×1.5
40～50
ZL10.5 0CS105B 10.5
3×1.5
(H1,H3,H5)
3×2.0
(H2,H4,H6)
915 400 3N Terminal1: 5×1.5
Terminal2: 5×1.5
40～50
ZL12 0CS120B 12.0
6×2.0
(H1-H6) 10 18 400 3N Terminal1: 5×2.5 Terminal2: 5×2.5
40～50
ZL14.1 0CS150B 14.1
3×2.0
(H1,H3,H5)
3×2.7
(H2,H4,H6)
13 23 400 3N Terminal1: 5×2.5
Terminal2: 5×2.5
60～70
ZL16.2 0CS170B 16.2
6×2.7
(H1-H6) 17 29 400 3N Terminal1: 5×2.5 Terminal2: 5×2.5
60～70
L:480
W:560
H:660
ZL18 OCS180B 18.0
9×2.0
(H1-H9) 18 32 400 3N Terminal1: 5×4.0 Terminal2: 5×2.5
80～90
ZL20.1 OCS210B 20.1
6×2.0
(H1,H4,H7)
(H3,H6,H9)
3×2.7
(H2,H5,H8)
20 34 400 3N Terminal1: 5×4.0
Terminal2: 5×2.5
80～90
L:480
W:560
H:660
2. Parameter and size of OC-SB Controller and OCS B Control Box (chart 2)
Input Output Load power Size (mm)
Model
3N~ 3N~ (Kw) L W H
Control box 400v 400v 9.0~20.1 310 260 70
OC-SB Voltage:DC5V 9.0~20.1 150 92 22
3. Parameter and size of temperature sensor (chart 3)

AQUA Sauna Heater
4 E002B-23-10-12
Detected scope Cut off on high temperature Size (mm)
Model
℃℉℃℉L W H
OC-S 0~110 32~230 120 248 76 42 27
4. Circuit Diagram for sauna heater and control Box
i. Sauna heater circuit diagram (Fig 1)
HEATING ELEMENT
OCS090B-0CS170B
(Fig 1-a)
HEATING ELEMENT
OCS180B-0CS210B
(Fig 1-b)
ii. Circuit Diagram for control box (Fig2)

AQUA Sauna Heater
E002B-23-10-12 5
VⅢ
Ⅱ
Ⅰ:;Ⅱ: ;Ⅲ:
Ⅳ:; Ⅴ:;Ⅵ:;Ⅶ:.
P ow er Input S auna H eat er Sauna light
S ens or Fan D oor C ont roller
Ⅰ
AC400V 3N 50 60Hz/～
Ⅳ
Ⅵ
Ⅶ
OCS- B Cont r ol box ci rcui t di agr am
Termi nal 1
(:)Voltage DC5V
Fan
A C230VA C230V Ma x Ou tput P o we r :12kw Ma x O utp u t P owe r :12kw
Light Ter mi nal 2
W WV VU UN
NLNF N
L3 L2 L1 N
Termi nal 1 Ter mi nal 2
L3 L3L2 L2L1 L1NN
123
RT
4
HI TEMP CUT OFF
MANUAL RESET
-
（）
DOOR
RE D Power on
Working on
Fan on
Lighton
K5 6 ON,K
K3 K4 ON,
K1 K2 ON,
L6
L7
L5
L4
L3
L2
L1
RED
RED
RED
RED
RED
RED
J10
ON
12
1 S wi tch : ℃/℉
2 S wi tch D oor :
（fig 2）
Chapter Two: frame and functions
Sauna heater frame and parts

AQUA Sauna Heater
6 E002B-23-10-12
(1)、Sauna heater frame (Fig 3)
(Fig 3)
(2)、Parts (Chart 4)
No. parts description
1 Heat element heating
2 Shell Insulate the inner shell to prevent from scalding
3 Cover PanelCover the electrical parts
4 terminal Connect the power supply
5 Power entry The route of power wires
1. OC-SB Controller frame and parts
(1)、Controller frame (Fig 4)
(Fig 4)

AQUA Sauna Heater
E002B-23-10-12 7
(2)、Keys and LED instruction (Chart 5)
Cha r t 5
No. Description Function instruction
1 On/off button Push to operate
2 Light button Push to operate for sauna room light
3 Fan button Push to operate for control box fan
4 Setting button Preset time and temperature and the setting confirmation
5 Increase button Press to increase
6 Increase button Press to decrease
7 Mode button Change working mode
8 Time display Display working time or waiting time to work
9 Temp. display Display temperature
10 Light LED Indictor Led for sauna room lamp
11 Model LED When this LED is lit the heater should be on.
12 Wait LED When this LED is on the count down timer is on.
13
Sauna room
Door(interlock)
indicator LED
When this LED is on the door has been opened since your count down
timer has been set and so the timer is cancelled and the heater won’t
come on until the settings are reset.
14
High temperature
LED
When this LED is on the safety overheat cut out thermostat has tripped,
this meansthe sauna has reached a temperature too high. You can
reset with the button in the sensor but test the control by setting a
temperature say 90oC and make sure the sauna temp stays around
this.
15 Fan LED Press to operate for fan
16 Heating LED On meansthe heat element is working
17 Stop working LED
Once the room has reached the preset temperature this light will
appear. This indicated it’s stop heating.
2. Control box frame and parts

AQUA Sauna Heater
8 E002B-23-10-12
(1)、Control box frame(Fig 5)
(Fig 5)
(2)、Control box instruction (chart 6)
No. Description Function instruction
1 Wire anchorage Route of wire entry and fasten wires
2 terminal Connect to the power supply
3 TerminalConnect to heater
4
Heater ,light
and fan output
Outlet of wires to heater ,light and fan and fasten wires
5
Control cable
entry
The entry of control cable
6 Light terminalConnect to light wire
7 Fan terminalConnect to fan wire
8
Control panel
terminal
Connect to control cable
9 Cover cover
3. Temp sensor frame and parts

AQUA Sauna Heater
E002B-23-10-12 9
(1)、Temp sensor frame (Fig 6)
(Fig6)
(2)、Temp sensor instruction (chart 6)
Chart 7
No. Parts Description
1 Circuit board Circuit board
2 Bracket Bracket
3 Cover Protects the electronics
4 Heat resistance Detects temperature
5 High Temp cut of switch When temperature in sauna room exceed 120 oC or 248 oF
Chapter Three: Installation
1. Important
Prior to installing sauna heater, please refer toInstallation 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 fulfils the minimum requirements concerning the distances given in Fig 7
and chart 8 .and allow for safety and convenience.
Choose the cable wire according to table 1, note for the cable to the heater you will need high
temperature resistant 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).

AQUA Sauna Heater
10 E002B-23-10-12
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 qualified electrician must do the installation of the heater to ensure safety and reliability. Improper
electrical connection can cause fire or electric shock. Refer to fig 1a or fig 1b (Electrical connection chart).and
fig 2
Fig 7
Chart 8 Safety distance
Safety distance
A
min
A
max
B
min
C
min
D
min
E
max
Model
mm mm mm mm mm mm
0CS090B 120 220 100 200 1200 630
0CS105B 120 220 100 200 1200 630
0CS120B 120 220 100 200 1200 630
0CS150B 160 260 100 200 1200 630
0CS170B 160 260 100 200 1200 630
OCS180B 160 260 100 200 1200 630
OCS210B 160 260 100 200 1200 630
2. Installation for sauna heater
Remove the cover panel & connect power supply wire & control cable through the wire anchorage to
the Terminal as per fig 8 and replace the cover panel.

AQUA Sauna Heater
E002B-23-10-12 11
Fig 8
Remarks: control box output to sauna heater can’t be bridged.
4.multi sauna heater linking function
Fig 9
3. Installation for controller
Ideallythe control panel should be installed at a height of approximately 1200mm for ease of use.
Installation method: drill a ∮40mm hole on wall for the wires. You can mount the panel by either
drilling two holes 118mm apart for the screws or the easier method removed the plastic cover using a
flat headed screw driver to carefully lever the cover off, then use the holes to mark your drill holes,
remove panel and drill, replace panel screw into place.
118mm

AQUA Sauna Heater
12 E002B-23-10-12
(Fig 10)
The control wire should plug into the silver / black din socket on the PCB of the main OCB control box.
4. Installation for Temp Sensor
Install the temperature sensor on the height between 1500-1800MM in sauna room
Open the cover with a screwdriver
Fix the bottom of the temperature sensor on to wall with screw
Replace the cover.
(Fig 11)
5. Sauna heater, Control box ,controller ,light ,fan and temperature sensor connection drawing
(Fig10A, Fig 10B, Fig 10C)
6. Door interlock install the switch following the manufacturers instructions and connect the wires
back to the control box as shown in figure 10A.10B.10C below
OC-SB
Controller
6
2
5Terminal 1
Sauna heater
2Fan
Door InterLock Switch
INPUT POWER
400V 3N~ 50/ 60Hz
OCS-B Control BOX
Temperature Sensor
lamp
Terminal 2
5
2
4
5
(Fig 12)
7. Heater Guard (not supplied)
The heater should be guarded against accidental contact with a wooden guard similar to the one shown

AQUA Sauna Heater
E002B-23-10-12 13
below –according to the position of the heater within the cabin it may need to be guarded on 2 or 3 sides.
Fix the guard in place around the heater by drilling screwing accordingly.
(Fig 13)
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. Sauna stones
Do not use the heater without stone, otherwise it may cause a fire. Only use Peridotite rock sauna rocks.
These can be supplied from the dealer where you purchased the 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 unspecified 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 flow 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 fig8). 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 totable 1 (Technical parameter ) provided.
(Fig 14)

AQUA Sauna Heater
14 E002B-23-10-12
9. Insulation
The door, ceiling and walls of sauna room must be insulated. When one square meter (m2) of uninsulated
surface choosing the heater input (refer to table 1), take following as example: 1 cubic volume increases to
approximately 1.3m3.
Make sure that moisture-protection is appropriate in sauna room. Purpose of this is to prevent
spreading moisture to the other rooms or wall structure . Moisture-protection must be placed between panel
and heating insulation.
Moisture and thermal protection should be installed from outside to inside, such as:
Recommend that the MIN thickness of the thermal insulation in the walls is 25mm and in the ceiling
50mm.
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. (fig 15a).when using mechanical
ventilation ,inlet vent is placed 50cm above the heater (fig 15b) or on the ceiling above the heater (fig 15c).the
heavy cold air that blown into sauna room is mixed with the light hot 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
underthe platform in sauna room as far as possible from the inlet vent. It can be installed nearthe floor, or lead
outside through a pipe from the floor going to a vent tothe sauna ceiling, or underthe 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.
Warning:
1. Do not power on when making electrical installation.
2. Do not hang clothes to dry in the heater, for this may cause a risk of fire.
3. Do not bake food in heater.
4. Keep away from the heater. When it is hot, the outer surface of the heater may burn your
skin.

AQUA Sauna Heater
E002B-23-10-12 15
(Fig 15)
1、Air supply vent
2、optional air supply vent if mechanical exhaust ventilation is used, the opening is located 50cm above
the heater
3、exhaust air vent
4、Drying vent, which is closed during heating and bathing, the sauna room can also be dried by leaving
the door open after bathing
5、If there is only an exhaust vent in washing room, leave an opening (MIN CM). Underthe sauna door
(Mechanical ventilation is recommended)
Chapter Four: Testing and operation
1. Testing
•Before connecting to the power supply check the sauna heater and make sure there are no flammable
items on or around the heater, please note that on the first use the elements and stones may smoke
slightly and give off 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 75 ℃/167℉, work time is 2 hours) chart 9
•When the time hasfinished counting down and the time window displays “0”, the controller and heater
will shut down automatically.
•“ “: Turns sauna light on/off
•““: Turns sauna fan on/off
•The Controller has a timing device so you can set a time when you want the heater to power up, this
can be set from 0~12 hours as shown in the Chart 9 below. When the controller is in B Model (Timer
mode) the heater can’t operate, but when B Model reaches “0”or the “ ” is pressed the heating

AQUA Sauna Heater
16 E002B-23-10-12
function will start (A Model). This is explained more at the bottom of this page.
Chart 9
Default Temp Temperature adjust scope
ModelDefault model
℃℉℃℉
A 75 167 50~110 122~230
Default time Time adjust scope
Working time Waiting Work time Waiting time
2 hours 4 hours 10 minutes~8 hours 0~12 hours
The time adjustment difference for every
press
The temperature adjustment difference
for every press
OC-SB
10minutes 1℃/2℉
2. Setting time and temperature:
•The default settings for temperature are: 75℃/167 ℉. 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” ” key the time display window will flash. press
“ ” or “ ” to adjust the time, every press the time will increase or reduce 10 minutes. once the
desired setting is reached press “ ” the window will stop flashing. 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
off the next time you turn on sauna heater 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 film and want the
sauna to start heating up half way through so its ready at the end of the film) you can use the B model
setting which can be set if you press the ”andthe time window will display 4:00, now Press” ”
key the time display window will flash. press “ ” or “ ” to adjust the time, every press the time will
increase or reduce 10 minutes. once the desired setting is reached press “ ” the window will stop
flashing., 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 “ ” or “ ” and it will count continuously up or down, when
it reachesthe time you want release and it will stop.
•Temperature: switch button you can switch between centigrade and Fahrenheit.

AQUA Sauna Heater
E002B-23-10-12 17
•To adjust temperature：if you press “ ” once after you finish setting the time or otherwise twice the
temperature window will flash, enter the required temperature by pressing “ ” or “ ” to adjust -
every press will increase or reduce 1 ℃or 2℉.you can adjust from 50℃-110℃（ 122℉-230℉） once
the required temperature has been set press “ ” key the window will stop flashing.
3. DoorInterlock
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 or in the sauna –then the sauna cabin door
must be closed before the timer setting can be made –once the timer begins if the
door is opened it will cancel the countdown and won’t operate until reset.
Chapter Five: Trouble shooting Guide
Please Note that we recommend a suitably qualified person carries out all repairs.
Trouble description Cause Solutions
There is no display on
the control panel
when the on/off
switch is pressed
There is a problem with;
1.power supply
2.circuit board transformer
3.fuse
1. Check the power supply. Ifthe power
supply indicator LED L1 (red) is on,
check the wire
2. Change the controller
The controller is on
but the sauna heater
doesn’t work
1. The sauna heater hasn’t
been connected
2. There is a problem with
the controller
1. Check the connection, refer to (Fig 2
and Fig 10)
2. Change the controller
OverHeat LED is on
1. The temperature sensor
hasn’t been connected
correctly
2. The high temperature cut
off switch is turned off
1. Check the connection to temperature
sensor
2. Check if the high temperature cut off
switch is turned off, if yes ,reset by
hand [page 12]

AQUA Sauna Heater
18 E002B-23-10-12
DoorLED is on
During the advance timer
countdown sequence ,the
sauna room door has been
opened , the timing stopped
and will not restart again
until it is reset.
Reset counter down timer
Wait LED is on red
Sauna heater is in
timer mode
If you want heat press the Model button
to change to A model (heating Mode)
Temperature windows
display --L℃(or
)or℉--H (℃or ℉)
1. Temp sensor isn’t
connected or cable is
broken
2. The temperature is
lower than 0 ℃(or
32℉),
The temperature is
higherthan 115 ℃(or
239℉)
1. –L℃(or ℉) meanstemperature
sensor hasn’t connected or the
temperature is lower than 0 ℃(or
32℉), check the connection, cable or
change sensor
2. –H ℃(or℉) meansthere is a short
circuit in the temperature sensor or the
temperature is higherthan 115 ℃(or
239℉) check the connection, cable or
change sensor
3. Change controller
Chapter Six Maintenance
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.
ChapterSeven: Warranty & After Sales
All OCS Series Sauna Heaters are guaranteed for 1 year from the date of purchase against faulty materials or
workmanship. The guarantee excludes consumable items such as the electrical elements and faults arising
from misuse or abuse of the appliance.

AQUA Sauna Heater
E002B-23-10-12 19
For warranty claims and after sales service please contact your local dealer.