Aleko NTSA Series User manual

NTSA3/9 171130
NTSA SERIES SAUNA HEATER
MODELS: NTSA-30, NTSA-45
NTSA-60, NTSA-90
With NTS-100 on-heater digital
control.
NTSC SERIES SAUNA HEATER
MODELS:
NTSC-30, NTSC-45
NTSC-60, NTSC-90
With NTS-300 wall-mounted
digital control.
Read all instructions carefully before installation. Please leave all
instructions and warranty with the owner.
IT IS UNLAWFUL TO INSTALL THIS UNIT WITHOUT FIRST
OBTAINING A PERMIT FROM THE LOCAL ELECTRICAL
INSPECTION AUTHORITY.
WARING
Prolonged exposure to elevated temperatures is capable of inducing
hyperthermia. Hyperthermia occurs when the internal temperature
of the body reaches several degrees above the normal body
temperature of 98.6 0F. The symptoms of hyperthermia include an
increase in the normal temperature of the body, dizziness,
lethargy,drowsiness, and fainting. The effects of the hyperthermia
include failure to perceive heat, failure to recognize the need to exit
the room, unawareness of impending hazard,fetal damage in
pregnant women, physical inability to exit the room and
unconsciousness.
WARING
The use of alcohol, drugs, or medication is capable of greatly
increasing the risk of fatal hyperthermia.
WARNING
Do not take a sauna if
using alcohol, drugs or
medications.
Pregnant women or
persons with poor
health should consult
their physician before
using any sauna.
Caution fire hazard: Do
not use the sauna room
for drying clothes,
bathing suits,etc. Do not
hang towels above
heater or place any
object other than the
rocks supplied on the
heater. If any darkening
of the wall around the
heater is noticed
discontinue sauna use
immediately.
Inspect sauna regularly
for required
maintenance to
heater,control and
benches. Replace wood
surfaces which show
any signs of
deterioration.
The heater gets
extremely hot during
operation and should
not be touched or burns
may result.
Minors should be
adequately supervised
whenever near a hot or
warming sauna.
.
INSTALLATION AND OPERATING INSTRUCTIONS

NTSA3/9 171130
These heaters are ETL approved for permanent installations and electrical connections. Built
with splash proof construction, the conducting parts are protected against water. All wiring
must be performed in accordance with national and local codes. See Diagram 2 for wire and
room size requirements. These heaters are wall mounted.
Thank for choosing NTSA and NTSC series 3~9kw sauna heater. The NTSA series sauna
heater is equipped with NTS-100 on-heater digital control panel while the NTSC series sauna
heater is equipped with NTS-300 wall-mounted digital control panel. Control panel NTS-300
and NTS-100 are designed for family use only.
NTSA and NTSC series sauna heaters are designed for small sauna rooms.
NTSA 30-90: 173/4” W×15” D×243/4”H NTSC 30-90: 173/4” W×113/4” D×243/4”H
MOUNTING BRACKET LOCATION AND MINIMUM DISTANCE
TO COMBUSTIBLE MATERIAL
SCREW
2" 2"
1"
7"
min
min 44"
A
C
min 78
Upper Bench
Guard Rail
1"
C
Use the long screws in the upper
holes of the mounting bracket
1
~ /
B
27
10 "
18"
"
2
1
/
/
38
2
1
/ "
"
/
18
2"
Temp Sensor
Temp Sensor
Limit Control
"
5
Recheck your distances from the heater to
combustible materials to be sure you have
the proper minimum distances.
OBSERVING MINIMUM DISTANCES
IS REQUIRED TO REDUCE FIRE
HAZARD
SAUNA HEATER
Minimum safety distance
(in.)
A
B
C
NTSA-30,NTSC-30
31/2
7
8
NTSA-45,NTSC-45
31/2
7
8
NTSA-60,NTSC-60
4
71/2
9
NTSA-90,NTSC-90
6
91/2
10
SECTION 1: GENERAL INFORMATION
DIAGRAM 1
INSTALLATION AND OPERATING INSTRUCTIONS Page 2

NTSA3/9 171130
Model
Power (kW)
Sauna Room
(CuFt)
Height≮763/4”
240VAC60Hz
Light
Fan
Max
Heating
Power wire
Copper
Fuse
A
120VAC60Hz
120VAC60Hz
NTSA-30
3.2
3.0
70～140
4#12AGW
20
≤40W
Connect to
Connection
terminal J9
on PCB
NO
NTSA-45
4.7
4.5
105～210
4#10AGW
25
NTSA-60
6.2
6.0
175～320
4#8AGW
40
NTSA-90
9.2
9.0
265～460
4#6AGW
60
NTSC-30
3.2
3.0
70～140
4#12AGW
20
≤40W
Connect to
Connection
terminal J10
on PCB
NTSC-45
4.7
4.5
105～210
4#10AGW
25
NTSC-60
6.2
6.0
175～320
4#8AGW
40
NTSC-90
9.2
9.0
265～460
4#6AGW
60
NOTE 1 : The Neutral wire (N) is not necessary if customer do not install the bulb nor the fan.
1
Chassis
2
Heating element
3
Heating elements installation plate
4
Base plate locking screw
5
Transformer (On-heater control unit only)
6
Sub-board (On-heater control unit only)
7
Base plate
8
Connection terminal TB1
9
GND terminal (Wall-mount Digital control unit
only)
10
Wire clip
11
Main-board (On-heater control unit only)
12
Connection terminal TB2, TB3, TB4 (Wall-mount
Digital control unit only have TB2)
13
Manual reset thermostat KT2
14
Compartment cover
15
Wiring box locking screw
16
Wiring box
17
Heating elements locking screw
18
NTS-100 digital control panel ( Build-in control
unit only)
19
Heating element guard
DIAGRAM 2
INSTALLATION AND OPERATING INSTRUCTIONS Page 3

NTSA3/9 171130
Refer to diagram 1, hanging the heater on the wall. Drill four 9/64”
holes to fasten the heater to the wall. Install two 1/4”X1/2” hex head
lag screws (supplied with the heater ) into the upper two holes.
Tighten these screws until their heads are about 1/8” from the wall
surface. The screws must be threaded through the wall into a
framing member or backing board to support the heater weight.
Hang the heater on the two upper screws. Locate the two 1/4”X1”
hex head lag screws(supplied with the heater) then install them into
the two lower mounting holes. Tighten to lock the heater in place.
See Diagram 1 for the heater location details and the necessary
clearances to combustible materials.
Never operate the heater without rocks in place! Otherwise it may
cause fire, only use the original sauna rocks or the rocks for use in
heater. Use of any other type of rock may void the heaters warranty.
Rinse the rocks with water before placing through the heater.
Carefully place the rocks loosely so that the air can circulate through
the heater. Packing the rocks too tightly may cause the heater high
limit switch to trip. The rocks must fully cover the heating elements.
Attach the guard with the screws provided.
Electrical installation must be made by a licensed electrician in
accordance with the National Electrical Code and local regulations.
All the wiring connection inside the heater has been done in
factory and carefully checked.
For on-heater control unit, customer only need to connect the power
supply, temperature sensor cable. Remove the compartment cover
from the front of the wiring box, route the feed wires through the
right holes provided in the bottom of the heater, connect the power
wires to the terminal TB1, route the temperature sensor cable
through the left holes provided in the bottom of the heater, connect
the cable to the terminal TB2,
For heater with wall-mount digital control unit, customer need to
connect the power supply to the terminal block in control box.
Connect the 6*12AWG+GND rubber cable wire and 2-p wire of
manual reset thermostat KT2, between control box and heater.
Connect the 6*12AWG+GND rubber cable wire to the terminal TB1,
connect the 2-p wire to the terminal TB2.
SECTION 2: MOUNTING OF SAUNA HEATER
WARNING
The use of accessory
attachments not
recommended by the
appliance manufacturer
may cause injuries
Fire sprinkler systems
used inside any sauna
room should be
properly rated for sauna
room temperatures.
Do not pour chlorinated
pool or spa water on
heater. Excessive water
use on heater may
cause damage and void
warranty
Electric Shock
Hazard-High voltage
exists within this
equipment. There are no
user serviceable parts
in this equipment. All
installation and service
to this equipment
should be performed by
qualified licensed
personnel in
accordance with local
and national codes.
Do not construct
sauna room so as to
restrict air flow through
the bottom of the heater.
Packing the rocks too
tightly may cause the
heater high limit switch
to trip
SECTION 3: PLACING OF ROCKS (See Diagram 13)
SECTION 4: ELECTRICAL HOOK-UP
INSTALLATION AND OPERATING INSTRUCTIONS Page 4

NTSA3/9 171130
To determine the correct wire size, refer to Diagram 2. Use copper supply wire only, suitable
for minimum 221℉. The heater must be grounded! See Diagram 4, 5, 6 and 7 for proper
connections.
Mount sensor to finished wall 2” from the ceiling directly above the heater, see Diagram 1 ,3, 4
and 5. The temperature sensor box is equipped with 10 feet connection wire and connector.
Please drill a hole with 3/4 inch diameter, then lead the connecting wire through and connect it
to terminal TB2 of On-heater control unit (Diagram 6) or connector J3 on main-board in the
control box of wall-mount digital control unit (Diagram 7). Then open the box cover, fix the
temperature sensor on wall with screws, and put back the cover.
Sensor wire must be routed completely separate (as per low voltage electrical wiring codes)
from any wiring carrying over 50 volts.
Only sauna heater with wall-mounted digital control NTS-300 is equipped with control box.
The control box should be installed close to heater and outside of the sauna room. The
installation spot should be well-ventilated and dry, with enough space for wire layout; the
environment temperature cannot exceed 140℉; the control box can also be hanged on wall or
shelf. Please refer to Diagram 7 for the control box connecting.
Install a wooden heater guard to prevent the sauna bather from accidentally touching the
sauna heater. Install the heater guard rail with the dimensions shown in Diagram 1 and 12.
SECTION 5: TEMPERATURE SENSOR BOX
SECTION 6: CONTROL BOX
SECTION 7: HEATER SCREEN (GUARD RAIL)
DIAGRAM 3
INSTALLATION AND OPERATING INSTRUCTIONS Page 5

NTSA3/9 171130
DIAGRAM 5
DIAGRAM 4
INSTALLATION AND OPERATING INSTRUCTIONS Page 6

NTSA3/9 171130
J1
SN12-100
5VDC0.5mA
F3
1 4
Blue Black
Blue
Yellow or Grey
Red or Brown
Black
4
3
2
1
TB2
120V
43 1 21 2 1 2 3 4
TB4
TB3 TB2
1 2 3 4
≤40W
LED
KT2
GND
RT
KT1
L2
L1 L1 L2
N
N
3 2 1
L2
TB1
L1
POWER SUPPLY
240VAC60Hz
NTS-100
J1
K3
K4 K6
K5
K2
KT2
J2
K8 K9
K1
K7
N
SAUNA ROOM
LIGHT
TEMP SENSOR BOX
MAIN BOARD
TRANSFORMER
SUB BOARD
HEATING ELEMENTS
MANUAL RESET THERMOSTAT
CONTROLLER
NTS-100C or NTS-100F
P1
P2
J2
P4
P5 TEST
J8 J9 J10 J5
J6
J1
P3
J12
J3
220-240VAC
POWER INPUT
F2
F1
L
1 2 3 4
CONTROL
2. Either the LED light system or normal
bulb could be installed.
Notice:
1. The Neutral wire (N) is not necessary if
customer do not install the bulb .
SYSTEM
Wiring Diagram For 3-9kW Sauna Heater
With On-Heater Controller
DIAGRAM 6
INSTALLATION AND OPERATING INSTRUCTIONS Page 7

NTSA3/9 171130
SN12-100
F3
5VDC0.5mA
Rubber Cable Wire
Temp Sensor Box Wire
Blue Black
4
1
1
2
3
4Black
Red or Brown
Yellow or Grey
Blue
MANUAL RESET
THERMOSTAT
NTS-300C or NTS-300F
GND
GND
GND
TB2
TB1
1 2
U U1 U2 V V1 V2
240VAC 60Hz
POWER SUPPLY
V2V1VU2U1
L2
L1
6*12AWG+GND
KT1 RT
NU
L2
L1
TIME
SET SET
TEMP
HEAT CONT
NTS-300
SAUNA CONTROL
L1 L2
KT2
1 2 3
N
3 421
SAUNA HEATER
HEATING ELEMENTS
SAUNA ROOM
SUB BOARD
MAIN BOARD
TEMP SENSOR BOX
TRANSFORMER
CA3-9A
K7
K1
K9
K8
J2
KT2
K2
K5
K6
K4
K3
J1
U
U1
U2
V2 V1
V
CONTROL BOX
SAUNA ROOM
CONTROLLER
4321
L
F1 F2
POWER INPUT
220-240VAC
J3
J12
P3
J1
J6
J5
J10
J9
J8
TEST
P5
P4
J2
P2
P1
N
SYSTEM
CONTROL
LIGHT FAN LED
≤40W
≤40W
120V 120V
Notice:
1. The Neutral wire (N) is not necessary if
customer do not install the bulb nor the fan.
2. Either the LED light system or normal
bulb could be installed.
Wiring Diagram For 3-9kW Sauna Heater
With Wall-Mounted Controller
DIAGRAM 7
INSTALLATION AND OPERATING INSTRUCTIONS Page 8

NTSA3/9 171130
It is recommended that the wall-mounted digital control panel NTS-300 to be installed near the
sauna door or other easy access location outside the sauna room, about 4 feet above ground.
Please drill a 2’’ hole at the installation spot. The panel is equipped with water-proof connector
and 16.5 feet control wire. Please connect one end of the control wire to the water-proof
connector of the panel, and another end to the connector on the control box through the
reserved wire hole. Then open the panel cover, fix the panel on the wall with screws, and put
back the cover, please refer to Diagram 8.
SECTION 8: CONTROL INSTALLATION
DIAGRAM 8
DIAGRAM 9
INSTALLATION AND OPERATING INSTRUCTIONS Page 9

NTSA3/9 171130
1.Heating indicator 2.Temperature display 3.Output indicator
4.Time display 5.Fan indicator 6.Temperature setting 7.Up
8.Down 9.Time setting 10.Pause/start 11.Sauna START/STOP
12.Fan ON/OFF 13.Light ON/OFF 14.Light indicator
1. Display
Temperature: Upper display window, display range:43－221℉.
Setting temperature: Adjustable range 158-194℉.
Ex-factory value is 167℉.
Time: The control NTS-300, maximum preset time is 12 hours
(0:00-11:59), the maximum the control will allow the heater to
operate is 60 minutes(1-60). Ex-factory preset time is 0:00 while
heating time is 45 minutes.
Time is displayed on the lower display window.
Heating: Indicated by left side LEDs.
Control heating: Indicated by right side LEDs.
External light：Indicated by“ ”.
Fan：Indicated by“ ”.
2. Automatic heating control function
Automatic heating control function compares room temperature with
user-set value, and then automatically decides groups of element to
turn on. When working time is over, heater stop to heating.
3. Button and function
START/STOP: The control NTS-300, press this button to heater
enters preset mode. If button pressed in preset mode or preset time
is over, heater enters heating mode. If button pressed in
heating mode or heating time is over, heater stop to heating.
SECTION 9: NTS-300 CONTROL OPERATION
INSTALLATION AND OPERATING INSTRUCTIONS Page 10
4
14
13
12
11 10 9
8
7
6
3
5
21
CONT
HEAT
TEMP
SET
SET
TIME
SAUNA CONTROL
NTS 300
WARNING
The control for this a
thermostat to adjust the
sauna temperature and
a timer to control when
the heater starts and
stops. The maximum
the timer of the heater to
operate is 60 minutes.
For health and fire
safety, never attempt to
alter or bypass the timer
or thermostat.
Do not locate benches
over heater. Minimum
clearance of ceiling
above heater 44 〞
.
Minimum clearance
from heater to wooden
surfaces (benches, side
walls, heater fence etc.)
2 inches. Mounting
brackets supplied.
Provides proper
clearance from wall
behind heater.
Use only copper wire of
the size and type
indicated in the Heater
Specification Chart and
the temperature rating
indicated on the heater
junction box.
All heaters and controls
must be grounded per
NEC to prevent
electrical shock in case
of unit failure
Electrical outlets or
receptacle must not be
installed in a sauna
room.
A guardrail or fence is
required around the
heater to prevent burns
from accidental contact.

NTSA3/9 171130
SET
TE M P
SET TEMP: Press this button to change temperature setting, the upper screen blinks and
displays the current setting, press “▲” or “▼” to adjust the setting, then press “
S E T
T E M P
” again to
confirm, or the system automatically confirm the changes after 3 seconds, upper screen
restore to display current room temperature.
TIME
SE T
SET TIME: The control NTS-300, press this button to change preset time setting, the
maximum preset time is 12 hours (0:00-11:59), press “▲” to adjust hour value, press “▼” to
adjust the minute value, press “
TIME
SET
” again to confirm your setting and then enters the
heating-time setting, maximum heating-time is 60 minutes, press “▲” and “▼” adjust it, press
“
TIME
SET
” again to confirm your setting.
PAUSE: Press this button to pause the heater from heating temporarily, and the heating
indicators turn off. The pause function will not affect the status of system counting down.
Press this button again to restore to original status.
LIGHT CONTROL: This button is used as ON/OFF switch for ordinary sauna light
（≤40W120VAC）.
FAN CONTROL: Press this button to turn on/off fan for ventilation.
SET
TE M P
and ▲TEMPERATURE UNIT SETTING: Hold
SET
TE M P
and ▲at the same time for over
3 seconds to switch temperature unit between ℃and ℉. Release the buttons when the
appropriate unit appears on the display. Then temperature will be displayed in the chosen
form. Ex-factory value is ℉.
SET
TE M P
and ILLUMINATION MODEL SETTING: Hold
SET
TE M P
and at the same time for
over 3 seconds to switch Illumination model between filament lamp (bULb on the display) and
LED system (LEd on the display), release the buttons when you need the “bULb” or “LEd”
appears on the display. Ex-factory value is bULb.
▲ADJUSTING BUTTON.
▼ADJUSTING BUTTON.
INSTALLATION AND OPERATING INSTRUCTIONS Page 11
To comply with UL requirement, maximum heating time must be less than 60 minutes
for family Sauna. Commercial sauna heaters must be used when service people
presents. Consult your dealer if commercial model needed.

NTSA3/9 171130
1.Temperature display 2.Heating indicator 3.Temperature-preserving
indicator 4.Light indicator 5.Time display 6.Sauna START/STOP
7.Temperature and Time setting 8.Light ON/OFF 9.Adjusting button
1. Display
Temperature: Left display window , display range:43－221℉.
Setting temperature: Adjustable range 158－194℉，Ex-factory value is 167℉.
Time: Time is displayed on the right side display window.
The control NTS-100, maximum preset time is 10 hours(0:00-9:59), the maximum the control
will allow the heater to operate is 60 minutes (1-60), Ex-factory preset time is 0:00 while
heating time is 45 minutes.
Heating indicator: Indicated by .
Temperature-preserving indicator: Indicated by .
External light：Indicated by .
2. Automatic heating control function
Automatic heating control function compares room temperature with user-set value, and then
automatically decides groups of element to turn on. When working time is over, heater stop to
heating.
3. Button and function
START/STOP: The control NTS-100, press this button to heater enters preset mode. If
button pressed in preset mode or preset time is over, heater enters heating mode, if button
pressed in heating mode or heating time is over, heater stop to heating.
Temperature and Time setting: The control NTS-100, press once to adjust the
temperature setting, the left side display window blinks and displays the previous setting
temperature, press the or button to adjust the setting temperature, then press
again to confirm your setting and entering preset time setting now, the maximum preset time is
10 hours (0:00~9:59), press to adjust hour value, press to adjust the minute value.
SECTION 10: NTS-100 CONTROL OPERATION
INSTALLATION AND OPERATING INSTRUCTIONS Page 12

NTSA3/9 171130
time is 10 hours (0:00~9:59), press to adjust hour value, press to adjust the minute
Press again to confirm your setting and then enters the heating-time setting, the
maximum heating-time is 60 minutes (1-60), press or to adjust the minute, press
again to confirm your setting.
Light control: This button is used as ON/OFF switch for normal external
light(≤40W120VAC).
and Temperature unit setting: Hold and at the same time for over 3
seconds to switch temperature unit between ℃and ℉. Release the buttons when the
appropriate unit appears on the display. Then temperature will be displayed in the chosen
form. Ex-factory value is ℉.
and Illumination model setting: Hold and at the same time for over 3
seconds to switch Illumination model between filament lamp (bUL on the display) and LED
system (LEd on the display), release the buttons when you need the “bUL” or “LEd” appears
on the display. Ex-factory value is bUL.
Adjusting button.
Adjusting button.
To comply with UL requirement, maximum heating time must be less than 60
minutes for family Sauna. Commercial sauna heaters must be used when service
people presents. Consult your dealer if commercial model needed.
INSTALLATION AND OPERATING INSTRUCTIONS Page 13

NTSA3/9 171130
The sauna heater has a built-in manual reset thermostat (KT2),
when abnormal high temperature inside the sauna heater, the
heating elements are cut off by the manual reset thermostat KT2
control equipment, sauna heater stop heating under this hazard
circumstance. If the manual reset thermostat continually shuts off
the heater, please check the “VENTILATION” section carefully. The
manual reset thermostat KT2 can only be manually reset after
temperature falls back to normal range and turn off power supply,
then restart the sauna heater as well, see Diagram 2, 4 ,5, 6 and 7.
The temperature sensor box has a built-in temperature limiting
thermostat (KT1), which automatically turns off the heater by the
temperature limiting thermostat (KT1) control equipment if the
temperature inside in the sauna room rises to an abnormally high
level. The temperature limiting thermostat KT1 can only be manually
reset after temperature falls back to normal range, and please
restart the heater as well. If the thermostat or heater cannot be
restarted, please check temperature limiting thermostat KT1 or
heating elements relays, please refer to Diagram 3, 6 and 7.
When taking a sauna, allow time to relax completely.
Remove clothing and jewelry…if required, wear a towel loosely.
After 10 minutes or when perspiration begins, leave sauna and
relax in dressing area…follow with a cool shower.
Cooling time should equal time spent in sauna. Enter sauna
room again and stay 5 or 10 minutes.
Repeat the cycle 2 or 3 times; end with a brisk shower … rinse
in cool water.
Dress when completely dry and perspiration has stopped.
Some sauna bathers enjoy the soothing effect of steam by
splashing water on the heated sauna rocks. Use only one dipper
full (1/2 cup) at a time and keep clear of the steam as it rises off
the rocks.
Do not smoke, exercise or drink alcoholic beverages in the
sauna room.
Do not pour chlorinated pool or spa water on the heater or
corrosion damage may result.
SECTION 11: HIGH LIMIT CONTROL (RESET BUTTON)
SECTION 12: HOW TO TAKE A SAUNA
.
INSTALLATION AND OPERATING INSTRUCTIONS Page 14

NTSA3/9 171130
Use all four long screws provided to fix the sauna heater securely on the wall. If the sauna room
wall panel is less than 1/2", add extra wood frame with thickness more than 1/2" on the installation
area to provide sufficient support
DIAGRAM 10
INSTALLATION AND OPERATING INSTRUCTIONS Page 15
DIAGRAM 11
DIAGRAM 12
VENTILAYION
TYPICAL PRE-CUT WALL CONSTRUCTION
DIAGRAM 13
1.Put smaller rocks in first
around the outer
perimeter of the heating
chamber.
2.Completely fill all four
sections (front, 2 center
sections between
elements, and back).
3.In the outer sections,
use smaller rocks placed
more tightly (see note b).
4.Place rocks loosely in
the center 2 sections
(see note a).
5.Be sure rocks
completely cover the
elements (see note c)
6.Loosely cover the tops
of all elements a
minimum of 2” to 3”
HEATER SCREEN
(GUARD RAIL)
Heater Screen
min 1"
min 2"
min 2"
Do Not Operate Unless Guard Is In Place
!
REDUCE THE RISK OF ELECTROCUTION AND BURNS
WARNING
Ventilation hole needs to be drilled

NTSA3/9 171130
Two metal placards are included in the Installation
Instruction Envelope packaged with every Sauna Heater.
using the screws or nails provided in the intended location,
at eye level.The CAUTION placard must be attached to the
interior wall of the sauna room directly above the heater
where it is visible to the bather. The WARNING placard
must be attached to the door of the sauna room.
For safety and reliability, the following rules must be
addressed.
All wiring to the sauna heater and accessories shall be
routed away from any direct radiation from the sauna
heater.
No permanent locking or latch system is to be used on
the sauna door.
Acceptable door fittings are: magnetic catches, friction
catches, spring or gravity loaded closures. The door must
always open outwards.
No shower may be installed in a sauna room.
No electrical receptacle shall be installed inside the
sauna room.
The enclosed WARNING: Reduce the risk of
overheating…warning plate must be mounted on or
alongside the door outside the sauna room at about eye
level.
The enclosed CAUTION: Reduce the risk of
fire…caution plate must be mounted on the interior wall
above the heater.
The heater should not be operated without its container
properly filled with rocks and the rock guard in place.
If an intercom speaker is installed, it should be away
from the heater and as close to the floor as possible.
If a room light is installed, it should be a surface
mounted bracket type. Wall mounted lights should be about
70″ above the floor. Ceiling mounted lights should be of an
approved type with a junction box that is remote to the
fixture itself. Use only a fixture that uses A.F.or fixture type
internal wiring. A 60 Watt bulb should provide sufficient
lighting.
Fire sprinkler systems installed inside any sauna room
should be properly rated for sauna room temperatures.
Always mount the heater according to these installation
instructions.
INSTALLATION AND OPERATING INSTRUCTIONS Page 16
SECTION 13: WARNING PLACARDS
WARNING
The “CAUTION” and
“WARNING” placards must
be mounted in accordance
with Section 13.
For safety purpose sauna
door must open out and not
lock.
Never use a wood stain, seal
or preservative on the inside
of your sauna room.
Light fixtures get very hot
during operation. Locate
light fixture where it will not
be a burn hazard.
SECTION 14: ROOM CONSTRUCTION

NTSA3/9 171130
VENTILATION In a sauna, the air should be changed about 6 times an hour. This can be
achieved by making a vent opening (fresh air inlet )in the sauna wall directly below the heater.
The air outlet must be lower than the upper benches, as far as possible from the heater and
about two feet higher than the fresh air inlet went, See Diagram 11. It is recommended that
ventilation openings meet the requirements of UL Specification 875. The minimum opening
should be determined using one of the following formulas:
For R<31, V≥9.3,
For R≥31, V≥0.3R
in which:
R = the floor area of the room in square feet and
V = the minimum vent size in square inches
For the SI system of units, the equations are:
For R<2.9:V≥60,
For R≥2.9:V≥20.8 R,
in which:
R is the floor area of the room in square meters and
V is the minimum area of ventilation openings in square centimeters.
Only licensed electrician is allowed to perform the maintenance. If you need technical support,
please contact your dealer.
Power supply must be cut off before any maintenance.
Test the heater after maintenance.
Frequent inspection is required to prevent hazard caused by damaged wire or parts
due to moisture.
Proper ventilation is important, check possibility of over-heating after the sauna heater
operating for a while.
Make sure heater is properly grounded; all cables are properly wired and not oxidized.
Care and cleaning:
Clean the control panel surface with damp soft cloth.
The sauna, like a bathroom, should be kept clean and odor free.
Towels or mats should always be used on benches and floor as perspiration otherwise
penetrates the soft wood.
Air out the sauna often by keeping the door and vents open when the sauna is not in use.
Saunas that are in daily use should be washed down at least once a week to keep them clean
and the air fresh. Duckboard should be removed from the sauna, the sauna floor mopped and
dried in a conventional manner, and the duckboard thoroughly scrubbed and dried before
returning to the sauna room. The sauna heater should be wiped down occasionally with a
damp cloth to remove lint and dust. The rocks should be removed once a year for cleaning
and small or crumbled rocks replaced.
SECTION 15: VENTILATION
INSTALLATION AND OPERATING INSTRUCTIONS Page 17
SECTION 16: MAINTENANCE

NTSA3/9 171130
To clean and remove perspiration stains, use soap or detergent in warm water, best applied
with a scrub brush. Badly soiled surfaces may require sanding. Sand paper wrapped around a
wooden block works well.
Benches and supporting structure must be inspected annually for potential deterioration due
to age, dry rot or abuse. Any boards with signs of deteriorations should be replaced
immediately to avoid possible injury. The units have no user serviceable parts. Any
replacement shall be done by the service center:
Changing heating elements: Turn off the sauna heater and cut off power supply. After the
sauna heater completely cools down, take it off from wall and lie flat on floor. Refer to Diagram
2 (explosive view), take off the base plate(7) by unlocking screws(4), label all wires in
sequence and then disconnect them from the elements, then pull the heating elements and
the wiring box out of heater after unlocking the screws(15). Unlock the screws(17), and pull
the heating elements out. After replacing the heating elements, reconnect everything in the
reverse order.
Changing mainboard: Turn off the sauna heater and cut off power supply.
For on-heater control unit, after the sauna heater completely cools down, take it off from wall
and lie flat on floor. Refer to Diagram 2 (explosive view), loose the base plate locking screw (4)
and remove the base plate (7). Label all wires in sequence and then disconnect them from
mainboard. After replacing the damaged mainboard, please reconnect all wires in original
position, and then test the heater.
For wall-mount digital control unit, please refer to Diagram 7. Open the control box to label all
wires in sequence and then disconnect them from mainboard. After replacing the damaged
mainboard, please reconnect all wires in original position, and then test the heater.
Changing sub-board: Turn off the sauna heater and cut off power supply.
For on-heater control unit, after the sauna heater completely cools down, take it off from wall
and lie flat on floor. Refer to Diagram 2 (explosive view), loose the base plate locking screw (4)
and remove the base plate (7). Label all wires in sequence and then disconnect them from
sub-board. After replacing the damaged sub-board, please reconnect all wires in original
position, and then test the heater.
For wall-mount digital control unit, please refer to Diagram 7. Open the control box to label all
wires in sequence and then disconnect them from sub-board After replacing the damaged
sub-board, please reconnect all wires in original position, and then test the heater.
Changing control panel: Turn off the sauna heater and cut off power supply first, then take
off the control panel cover and loose the control cable. Replace the broken control panel with
new one, please refer to Diagram 8 and 9.
Changing temperature sensor: Turn off the sauna heater and cut off power supply, wait for
the sauna heater completely cools down. For on-heater control unit, take off the compartment
cover and disconnect the temperature sensor cable from terminal TB2; for wall-mount digital
control unit, unplug the temperature sensor cable from connector J3 from the main-board in
the control box. After that, loose the temperature sensor box and unplug the cable, then
replace the broken temperature sensor with new one.
INSTALLATION AND OPERATING INSTRUCTIONS Page 18

NTSA3/9 171130
Intelligent self-diagnose function
Please check the following hint message for quick trouble shooting.
Room temperature is lower than 6℃（43℉）：displays “－L”.
Room temperature exceeds 105℃(221℉): Displays“－H”. Sauna heater will not heat
any more. Restore to normal state automatically after room temperature falls back to
normal range.
Communication error：displays“EE”. Bad connection between panel and mainboard，
sauna heater will not heat any more. Error message disappears if connections restores. If
the system cannot restore automatically after several minutes, please turn off sauna
heater and cut off power supply, then check the control cable and connector between
control panel and mainboard.
Temperature sensor error： displays “SE”. The temperature sensor RT is either broken or
shorted, heater stop working. Error message disappears automatically once temperature
sensor is working properly. If the system cannot restore automatically after several
minutes, please turn off sauna heater and cut off power supply, then check the cable and
connector of the temperature sensor box, or replace sensor box.
NOTES: When abnormal high temperature inside the sauna heater or the sauna room
temperature exceeds 120℃(248℉), the heating elements are cut off by the manual reset
thermostat KT2 or the temperature limiting thermostat (KT1) control equipment, sauna heater
stop heating under this hazard circumstance, please check the “VENTILATION” section or
KT1 and heating elements relays carefully, the manual reset KT1 or KT2 can only be manually
reset after temperature falls back to normal range and turn off power supply, then restart the
sauna heater as well. If the manually resettable temperature-limiting control trips
frequently, a qualified serviceman should be contacted.
SECTION 17: TROUBLESHOOTING
INSTALLATION AND OPERATING INSTRUCTIONS Page 19