Saunatec Hot Tub 1108 24 User Guide

1
Installation & Operation Instructions  
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.  
SAUNA HEATER 1108-24, 1108-46 & 1108-60  
Saunatonttu 2.4, 4.6, & 6.0 kW  
Read all instructions carefully before installation.  
Please leave all instructions with the owner.  
Inspect sauna regularly for  
required maintenance to  
heater, control and benches.  
Replace wood surfaces which  
show any signs of deteriora-  
tion.  
WARNING  
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°F. 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.  
The heater opening gets  
extremely hot during opera-  
tion.  
Keep clear of opening while  
sprinkling water on the rocks.  
Steam is very hot and forceful.  
WARNING  
The use of alcohol, drugs, or medication is capable of greatly increas-  
ing the risk of fatal hyperthermia.  
Close heater lid after use.  
SECTION 1: GENERAL INFORMATION  
Note: Saunatonttu users: Please read “Section 6” to understand the  
principles around which this heater is designed, and to understand the  
sauna conditions it will create for you.  
Minors should be adequately  
supervised whenever near a  
hot or warming sauna.  
These heaters are UL 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 local codes. See Diagram 2 for wiring and room size requirements.  
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Installation & Operation Instructions  
SECTION 2: MOUNTING SAUNA HEATER AND CONTROL  
Warning  
Carefully locate the heater according to the dimensions shown in Diagram 1.  
Fire sprinkler systems used  
inside any sauna room  
should be properly rated for  
sauna room temperatures.  
The supplied mounting block and control must be located and mounted  
according to Diagram 1B. (This is to prevent the control from being placed in  
an unsafe location.)  
Do not pour chlorinated  
pool or spa water on heater.  
Excessive water use on  
heater may cause damage  
and void warranty.  
Do not install a shower in  
the sauna room.  
Electric Shock Hazard -  
High voltage exists within  
this equipment. There are  
no user serviceable parts in  
this equipment. All installa-  
tion and service to this  
equipment should be per-  
formed by qualified licensed  
personnel in accordance  
with local and national  
codes.  
SECTION 3: PLACING OF ROCKS  
The rocks supplied with the heater have been chosen to provide the best  
heater performance. Use of any other type of rock may void the heater’s  
warranty. Never operate the heater without rocks in place! Rinse the  
rocks with water before placing in the heater. Place the rocks loosely to  
keep the elements vertical and so 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.  
Do not construct sauna  
room so as to restrict air  
flow through the bottom of  
the heater.  
SECTION 4: ELECTRICAL HOOK-UP  
Electrical installation must be made by a licensed electrician in accor-  
dance with the National Electrical Code and local regulations.  
Packing the rocks too tightly  
may cause the heater high  
limit switch to trip.  
To determine the correct wire size, refer to Diagram 2. Use copper  
supply wire only, suitable for minimum 90 degrees C. The heater must  
be grounded! See the heater wiring diagrams for proper connections.  
Remove screws from the back cover to gain electrical access. Refer to  
Diagram 10.  
SECTION 5: GUARD RAIL  
To reduce the risk of injury (hot surface of sauna heater opening) install  
the heater guard rail with the clearances and dimensions shown in  
Diagram 1.  
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Installation & Operation Instructions  
Warning  
SECTION 6: THEORY of OPERATION  
This heater is always ready and is designed to keep the rocks in the rock  
chamber hot at all times using a “Continuous Power” setting of 100 Watts, 200  
Watts or 300 Watts. This amount of energy is stored and accumulates in the  
rocks while the lid is closed.  
Minimum clearance from  
heater to wooden surfaces  
(benches, side walls,  
heater fence etc.) is shown  
in diagram 1.  
First time use or with rocks cold:  
With the lid closed, turn the system on by pressing the Reset button on the  
control. Next press the upper “>” right arrow until the 60 minute indicator  
glows. The sauna heater will be close to operational temperatures in 1 hour.  
Refer to Diagram 4 for Control Discription.  
Use only copper wire of  
the size and type indicated  
in the Heater Specifica-  
tion Chart and the tem-  
perature rating indicated  
on the heater junction  
box.  
Normal Use:  
Rocks are hot and lid is closed. Open the lid to allow the energy to transfer into  
the room. Leave room and return in 5-10 minutes. The room temperature should  
be 125 F - 135 F. Now the sauna is ready to use.  
All heaters and controls  
must be grounded per  
NEC to prevent electrical  
shock in case of unit  
failure.  
Sprinkle the water on as desired to personal preferences of temperature and  
humidity. Wait a few seconds and add another ladle of water on rocks. The  
humidity in the air will rise and make the room feel hot. Continue to add water  
as desired. The room temperature will also rise. If air becomes uncomfortable,  
close the lid and this will remove the heat source.  
Electrical outlets or  
receptacles must not be  
installed in a sauna room.  
This heater is designed to have the lid open for a maximum of 60 minutes  
for any sauna bath.  
The steam is very hot and forceful. Please stay clear of opening while  
sprinkling water on the rocks.  
A guardrail or fence is  
required around the  
heater to prevent burns  
from accidental contact.  
After sauna bath, the lid should be closed to allow the Continuous Power to  
replenish the rock temperatures.  
Tips: Continuous Power settings vs. time to replenish rock temperatures:  
Use sauna 4 - 5 times a week, set on 300 W  
Safety Locking Lid  
Use sauna 2 - 3 times a week, set on 200 W  
Use sauna 1 time a week, set on 100 W  
Locking Pin  
Turn on Boost Power if lid will be open longer than 30 minutes during 1 session.  
This will keep rocks hot to create steam.  
Note: Sauna temperatures are typically measured one foot from the ceiling. The  
Saunatonttu is designed to operate between 130 and 150 degrees F, although it  
can achieve higher temperatures if allowed to heat with the lid open for an hour.  
Safety Locking Lid:  
On the right hand side of the lid, there is pin with a wood knob. To release the lock, pull out on wood pin.  
This will allow the lid to be moved. There are two locking positions, full open or closed.  
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Installation & Operation Instructions  
SECTION 6: THEORY of OPERATION CONT.  
Sauna Temperature and Humidity Theory:  
The worldwide trend in sauna bathing is “lower temperatures and higher humidity”—much like ancient  
woodburning saunas. Old woodburning saunas (ancient “smoke saunas” or more recent saunas with  
woodburning stoves) had massive amounts of rocks, heated by burning wood, which in turn created a soft  
radiating heat, and very pleasant steam when water was sprinkled on the rocks. The Saunatonttu captures the  
essence of those wonderful saunas of old.  
A large rock mass is the essential feature to create lower temperature/higher humidity saunas. The Saunatonttu’s  
combination of 200 pounds of rocks surrounded by high-tech super-insulation makes it possible. The large rock  
mass, superheated with minimal energy, is ready for sauna with the simple opening of the lid. Soft heat and  
wonderful steam are immediate.  
This large rock mass concept is based on the “Rule of 200” (see Diagram 3) which illustrates how humidity and  
temperature interact. The “Rule of 200” suggests: “To the typical sauna bather, a sauna is most comfortable  
when the combination of degrees Fahrenheit plus Relative Humidity is 200 or less”.  
Example:  
Room temperature is 145 F.  
200 - 145 = 55  
There could be up to 55% humidity in the room before it becomes uncomfortable for the user. If temperature  
goes up the humidity level will need to come down to be comfortable for the user.  
DIAGRAM 3  
TM  
Rule of 200  
190  
180  
170  
160  
150  
140  
130  
120  
110  
100  
90  
% of Humidity  
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Installation & Operation Instructions  
Diagram 4  
SECTION 7: OPERATION  
For health and fire safety, never attempt to alter or bypass the controls.  
This heater has a 60 minutes timer built into the programming. The rock  
temperature is preset by the manufacture.  
A
B
D
Turning system on:  
C
Position the O - I (On/Off) rocker switch on the lower front of heater to  
the “Up” position. This switch can remain in the “I or On” position  
indefinitely. The “I” position puts the hand held control in the standby  
mode.  
F
G
E
H
Control button names are listed in Diagram 4.  
I
Reset  
Initializing System: Press the “Reset” two or three times to cycle the  
control until the “0” is the only thing glowing in the Boost Power Time  
Indicator Lights. This means that the “Boost Power” is set for “0” min-  
utes and the “Continuous Power” is “Off”. Press the “Reset” button  
again and the control will be in the Standby mode.  
A
B
C
D
E
F
G
H
I
Boost Power On Lights  
Boost Power Time Indicator Lights  
Increase Boost Power Time Arrow  
Decrease Boost Power Time Arrow  
100 Watt Indicator Light  
200 Watt Indicator Light  
300 Watt Indicator Light  
To activate “Continuous Power” press the Continuous Power Arrow  
“>” on lower half of control. Pressing this button will cycle through the  
Continuous Power settings from 100 Watts to 200 Watts and then to 300  
Watts. Press the button again and it will turn them off.  
Continuous Power Arrow  
Reset Button  
The “Continuous Power” is used to replenish the rock temperatures during non sauna use. The lid should be  
closed and the heater would use the chosen Continuous Power setting to heat the rocks to normal operating  
temperature and the internal thermostat would regulate the temperature. The higher the Continuous Power  
setting, the quicker the rocks would regain temperature and be ready to be used again. Refer to “Tips” in Section  
6 for more information.  
To activate the “Boost Power” press the arrow keys at the top of control to activate the Boost Power timer. As  
the arrow “>” key is pressed the time will increase to a maximum of 60 minutes. Press the “<” arrow key and  
the time will decrease until 0 minutes.  
To activate the “Closed Lid Power” press the “<“ arrow key at the top of the control until the green light is  
glowing. This mode will reduce maximum power to continuous power after 3 to 10 minutes when the lid is  
closed. When the lid is open, the maximum power will turn back on after 3 to 10 minutes.  
The “Boost Power or Closed Lid Power” provide maximum power to the rocks with a maximum time of 60  
minutes.  
Note: No control functions will be glowing in the Standby mode.  
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Installation & Operation Instructions  
DIAGRAM 5  
SINGLE PHASE WIRING DIAGRAM: Saunatonttu 6.0 kW heater  
Heater Type: 1108-60  
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Installation & Operation Instructions  
DIAGRAM 6  
SINGLE PHASE WIRING DIAGRAM: Saunatonttu 4.6 kW heater  
Heater Type: 1108-46  
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Installation & Operation Instructions  
DIAGRAM 7  
SINGLE PHASE WIRING DIAGRAM: Saunatonttu 2.4 kW heater  
Heater Type: 1108-24  
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Installation & Operation Instructions  
DIAGRAM 8  
DIAGRAM 9  
Exhaust  
Fresh Air  
DIAGRAM 10  
Electrical access for the heater is on  
the back of the heater.  
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Installation & Operation Instructions  
Warning  
SECTION 8 : WARNING PLACARDS  
Three metal placards are included in the Installation Instruction Enve-  
lope packaged with the Saunatonttu Heater.  
The “CAUTION” and  
“WARNING” placards  
must be mounted in accor-  
dance with Section 8.  
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.  
The placard for lid closer must be attached just below the “Caution”  
placard in the room above the heater.  
SECTION 9 : ROOM CONSTRUCTION  
For safety and reliability, the following rules must be addressed.  
• No permanent locking or latch system can 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 can be installed in a sauna room.  
• No electrical receptacle shall be installed inside the sauna room.  
• The enclosed WARNING: Reduce the risk of overheating …the  
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 … the caution plate  
must be mounted on the interior wall above the heater.  
• The heater must 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 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.  
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.  
• 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.  
Light fixtures get very hot  
during operation. Locate  
light fixture where it will  
not be a burn hazard.  
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Installation & Operation Instructions  
SECTION 10 : HIGH LIMIT CONTROL (RESET BUTTON)  
The sauna heater has a built-in High Limit control, which automatically  
turns off the heater if the temperature inside the sauna room rises to an  
abnormally high level.  
To reset the high limit control, let the heater cool and then push the button.  
The reset button is on the back top right corner of the heater. The button is  
protected by a soft rubber grommet. See Diagram 1A.  
Shower  
If the High Limit continues to shut off the heater, contact a service repre-  
sentative.  
SECTION 11 : HOW TO TAKE A SAUNA  
Sauna (10-15 min)  
• When taking a sauna, allow time to relax completely.  
• Remove clothing and jewelry.  
• Some sauna bathers enjoy the soothing effect of steam by splashing  
water on the heated sauna rocks. Use only one dipper full (approx. ½  
cup) at a time and take care to keep clear of the steam as it rises off the  
rocks.  
Rest (10-15 min)  
• After 10 minutes or when perspiring freely, leave sauna and relax in the  
dressing area, followed with a warm shower.  
Relax with juice or water  
• Enter sauna room again when ready and stay 5 or 10 minutes.  
• Repeat the cycle 2 or 3 times; end with a warm shower and rinse in  
cool water.  
• Dress when completely dry and perspiration has stopped.  
• Do not smoke, exercise or drink alcoholic beverages in the sauna room.  
Like it?  
Do it again and feel great.  
• Do not pour chlorinated pool or spa water on the heater or corrosion  
damage may result.  
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Installation & Operation Instructions  
SECTION 12 : VENTILATION  
VENTILATION Ventilation shall be provided 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 vent, See Diagram 9.  
The minimum opening should be determined using one of the following formulas:  
For R<31, V9.4  
For R31, V0.3R  
where R = the floor area of the room in square feet and  
V = the minimum vent size in square inches  
SECTION 13 : MAINTENANCE  
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.  
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 deterioration should be replaced immediately to avoid possible injury.  
SECTION 14 : TROUBLESHOOTING  
For troubleshooting or service questions call 1-888-780-4427 and ask to speak with service. Also contact the  
following e-mail addresses for sales or technical support.  
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