Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
Electric Heater
AM90MI
AM80MI
AM90DI
AM80DI
AM60DI
AM45DI
AM30DI
AM30D
The Heater
-Installation
-Operation
AM60MI
AM45MI
AM30MI
AM30M
USER HANDBOOK
MODEL
Welcome to select the
above AM Heater.
Kead the user handbook
before using the heater.
NTSB-20
NTSB-30
NTSB-45
NTSB-60
NTSB-80
NTSB-90
NTSB2/9 20110110
Please read the user
handbook BEFORE using the
heater.
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
2
HEATER
MODEL
POWER
SAUNA ROOM
MIN DISTANCES
CURRENT
AND
SIZE OF WIRE
Capacity
kW
VOLUME
(ft 3)
MIN / MAX
HEIGHT
(inch).
SIDE
WALL
(inch).
DISTANCE
TO SHELF
OVER 20 in
ABOVE
THE
FLOOR
(inch).
CEILING
(inch).
FLOOR
(inch).
240V60Hz
SINGLE
PHASE
STONES
lb.
NTSB-20
2.0
70
141
75 2 5
43
7
120V16.7A
3×12AWG
26
NTSB-30
3.0
70
141
75 2 5
43
7
12.5A
3×12AWG
26
NTSB-45
4.5
106
212
75
3.2 5 43
7
18.75A
3×12AWG
40
NTSB-60
6.0
176
317
75 4 6
43
7
25A
3×10AWG
40
NTSB-80
8.0
282
423
75
5.2 8 43
7
33.3A
3×10AWG
44
NTSB-90
9.0
318
459
75
5.2 8 43
7
37.5A
3×8AWG
44
Thank you for choosing NTSB series SAUNA HEATER, with solid design, reliable performance, steady output and
convenient installation.
NTSB sauna heater series is designed for family sauna room, the models include: NTSB-20 NTSB-30, NTSB-45,
NTSB-60, NTSB-80, and NTSB-90. Please refer to table 1 for corresponding room volume for each model.
Warning: The heater is not allowed for any other purpose rather than heating up a sauna room.
ATTENTION: This appliance is not intended for use by person (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for their safety.
ATTENTION: Children should be supervised to ensure that they do not approach the appliance.
Table 1:
HEATER INSTALLATION
Prior to install the heater, please read and follow the installation instructions carefully
Fix the heater on wall with screws.
Choose the correct and suitable heater for your room, please check parameter table 1.
Is the supply voltage suitable for the rated voltage of the heater?
The installation location of the heater must fulfils the minimum requirements concerning the distances given in
chart 1 and allow for safety and convenience (see table 2).
Do not install the heater at floor or wall recess.
The required minimum height of SAUNA ROOM is 75”(chart 1C) .
Do not use asbestos-cement tile, asbestos–board and this kind of material as wall sheet behind the heater. For
this material will cause the temperature of the wall to rise dangerously high.
Choose the cable wire according to table 1 and the cable wire can bear high temperature 338℉ (It is
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
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～0.12＂
16.14＂
1.57＂
14.57＂
23.6＂
5.9＂
B
SCREW
7＂
43＂
A
min 75＂
＂
2
NTSB-20
11＂
11＂
11＂
11＂
A
(MIN）
STOVE
B
(MIN）
NTSB-30
NTSB-45
6＂5.2＂ 8＂
5＂
3.2＂
4＂
6
4＂ 4.7＂
8＂5.2＂ 6＂
2＂ 2.7＂ 11＂
5＂
0.8＂
DC
max.20＂
3
21
5
4
6
D
(MIN）
C
(MIN）
1、THE TIMER(OR OPERATION
SWITCH)
2、THE THERMOSTAT
3、JUNCTION BOX
4、ELECTRICAL POWER WIRE
5、JUNCTION BOX
6、CONDUCTING WIRE
NTSB-60
NTSB-80
NTSB-90
recommended to use rubber cable wire).
Do not install more than one heater in a sauna room unless twin-heater installation (NOTE: Leave 16”between two
heaters when installing two.)
The heater gets very hot when working .To avoid risk of accidental contact with the heater, it is recommended that a
heater guard be installed. The guard is made into many kinds of patterns in accordance with the location place, yet some
size must be made as the chart ID (see table 2 and chart 4).
Circuit protector must be installed for the heater to ensure safety and reliability .Improper electrical connection can
cause fire or electric shock. Refer to the chart 8 and 9.
The junction box in SAUNA ROOM must be sealed, splash–proof and have a moisture condensing vent with 3/8”
diameter , its maximum height from the floor must not exceed 20” (see chart 2).
NOTE: The screw must be tighten, leave about 3 mm between screw head and the wall.
CHART 1A CHART 1B CHART 1C
CHART 1D TABLE 2 CHART 2
Transfer the control unit
The timer (or operation switch) and thermostat are located at the front cover of heater, if you want to transfer it to
front cover (or left) side, which can done by professional electrician. (see chart 3).
1. Turn off the heater and dismount the bottom-edge of heater
2. Pull out the thermostat (2) and the timer knob ( 3)。
3. Open the screws .
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
4
3
3
3
4
5
4
5
1
2
1 2
2
1
min 2"
min 2"
min 0.79"
4. Remove the cover from the side.
5. Transfer the thermostat ( 2 ) and the timer to the other side and then tighten the screws .
6. Fix the knob.
7. Cover the front vent with the side cover.
8. Check connections of the thermostat and the timer.
9. Mount the bottom-edge.
CHART 3： CHART 4：
CONTROL TEMP (INNER CONTROL)
You can control temperature by turning thermostat operating knob. (Chart 2)
The heater should be equipped with proper size of sauna room. It normally takes 30-60 minutes to reach and
maintain the user-set temperature (refer to table 1). Please check CHART 8 for circuit diagram.
The timer
The timer is the main power switch in heater
The timer automatically cuts off the power once setting time is over.
The timer 8+4 hours preset
The timer has 1-8 hours presetting time and 1-4 hours operating time. Turn the knob to anywhere between 1-4 hours
on the operating time scale if wish to skip the preset time and start the heater immediately.
CONTROL TEMP (With outer controller: NTS-200)
Please check the “CONTROLLER-CON3 INSTRUCTIONS MANUAL” for instruction and operation of the outer
controller.
Please check diagram 9 for circuit diagram.
ATTENTION：Check sauna room before restart the timer.
SAUNA STONE <refer to chart 5>
Do not use the heater without stones, otherwise it may cause fire, and only use the original provided sauna stone or
stone specific for sauna heater. Do not use ordinary stone, that may emit harmful substance, 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
the 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 chart 5). The diameter of stone is about 1.18”-3.15”.
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
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1. Air supply vent.
2. Optional air supply vent if mechanical exhaust ventilation is used, the opening should be located 20” above
the heater.
3. Exhaust air vent.
4. Drying vent, which is closed during heating and bathing. The sauna can also be dried by leaving the door
open after bathing.
If there is an exhaust vent in the sauna room only, leave a MIN 2” opening under the sauna room door. (Mechanical
ventilation is recommended).
Rearrange the stones in the heater at least once a year or twice if it is in frequent use (maximum 500 hours). To
decide the correct volume of stones in the heater, refer to technical data provided (table 1).
CHART 5：（ PILING OF THE SAUNA STONES）
Air Ventilation of SAUNA ROOM
CHART 6：（ LOCATION OF INLET AND OUTLET VENT）
To ventilate the Sauna room, we mean that drawing air around the heater and moving the heat to the farthest
part of sauna room.
Considering air ventilation of sauna room, the inlet vent and the outlet vent should be installed.
The inlet vent should be installed on the wall below the heater (chart 6a). When using mechanical ventilation, inlet
vent is placed at least 20” above the heater (chart 6b) or on the ceiling above the heater (chart 6c). The heavy cold air
that is blown into sauna room is mixed with the light hot air from the heater, bringing in fresh air for the users. The inlet
vent should have a diameter of 2”-4”.
The outlet vent should be placed diagonally opposite to the inlet. It is advised the outlet vent is placed under the
platform in a sauna room as far as possible from the inlet vent. It can be installed near the floor, or lead outside through a
pipe from the floor going to a vent to the sauna ceiling, or under the door (to the washroom).
In this case, the sill slot must be at least 2” and it is recommended there is mechanical ventilation in the washroom . The
size of the outlet should be twice of the inlet.
Warning: 1. Do not turn on power when install or maintain the heater.
2. Do not cover heater with clothes which may cause a risk of fire.
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
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10.04"
11.02"
22.44"
14.17"
4.13"
16.14"
14.17"
NTSB-45～NTSB-90
18.9"
15.75"
8.07"
7.09"
12.01"
NTSB-20，NTSB-30
3. Do not bake food in heater.
4. Keep away from the heater when it is hot, you may get hurt by the outer surface of the heater.
Insulation.
The door, ceiling and walls of sauna room must be insulated. 10.76 ft2 (1m2) of un-insulated surface increases the
cubic volume approximated 40.37 ft3 (1.2m3) when determine the power requirement of the heater <refer to table 1>.
Make sure that moisture proof is appropriate in sauna room. Purpose of this is to prevent spreading of moisture to
the other rooms or wall structure. Moisture proof must be placed between panel and heating insulation. Moisture and
thermal proofing should be installed from outside to inside:
1. Recommend that the MIN thickness of the thermal insulation in the walls is 2” and in the ceiling 4”.
2. Aluminum foil laminate can be affixed over the heating insulation as a vapor barrier.
3. Leave at least 0.8” air slot between vapor barrier and inside panel.
4. Leave a slot between wall panel and ceiling to prevent gathering moisture behind the panel.
Spruce wood is recommended as material of wall and ceiling.
Heating
Ensure there is nothing near the heater before switching on it. The heater and the stones may emit smells when you
use the heater for the first time. Make sure that the sauna room has been efficiently ventilated or open the sauna room
door. It will take about an hour to reach suitable temperature in sauna room if the output of heater is proper.( CHART 6) ;
The temperature that user preferred to is about 140-194℉. Too powerful heater will heat sauna room too quickly
and the temperature of stones may remain insufficient. Consequently, water thrown on the stones will run through and do
not produce sufficient vapor. On the other hand, if the heater is underpowered the heating time will be much longer.
Malfunctions
If the heater doesn’t work, check the following (Note: switch off the heater before maintenance >.
1. front frame 2. stove side frame 3. heating element 4. terminal block
5. heating element holder with o-rings 6. cable holder 7. name plate 8. supply wire set.
Warning: Never put cover on the heater; Do not use heater without stone;
Do not put wood on the heater; Do not use chlorinated water.
CHART 7： DIMENSION OF SAUNA HEATER
Nature Sauna Inc. Canada. 3625 Loreto Rue, Brossard, QC, Canada. TEL: (1)514-663-2291 Website: www. naturesauna.com
7
NTSB-20
54 6321
L
N
120VAC60Hz
Timer
Limit Control
Thermostat
Contactor
240VAC60Hz
L
1
L
2
1 2 3 64 5
3
2
1
Heating elements
M
al
a
b
bo
Heating elements
SAUNA HEATER
240VAC60Hz
L3
1
L3
L4 L4
1
2
3
54 632
L3
L4
CONTROL BOX
L4L3L4L4
L3
L3
CHART 8： CIRCUIT DIAGRAM（CONTREL INSIDE）
CHART 9：CIRCUIT DIAGRAM（CONTREL OUTSIDE）
Calor de Hogar
Av Tecnológico 735, PB
San Salvador Tizatlalli
Metepec, 52172, Edo de México
Teléfono (722) 216 3330
(55) 1163 6038
www.calordehogar.com
servicio@calordehogar. omc
ventas@calordehogar.com
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