Finlandia Electric Heater JM 17 User Manual

JM-17, JM-20, JM-30  
Instructions for installation and use of Electric Sauna Heater  
Finlandia Sauna Products. Inc.  
14010-B.S.W., 72nd Ave.,  
Portland, OR 97224-0088  
1-800-354-3342 503-684-8289  
Fax: 503-684-1120  
05/2001H  
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1. INSTRUCTIONS FOR USE  
This heater shall not be operated unless the rock  
compartment in the top of the heater is filled with the  
rocks, and the guard is in place.  
1.1. Piling of the Sauna rocks  
The sauna rocks for an electric heater should be 1 9/16"  
– 3 1/8" (4–8 cm) in diameter. The heater rocks should be  
solid blocks of rock specially intended for use in the heater.  
Neither light, porous ceramic “rocks “ of the same size nor  
soft potstones should be used in the heater, because they  
may cause the resistance temperature to rise too high as  
a result of which the resistance may be broken.  
Figure 1.  
Piling of the sauna rocks  
Rocks dust should be washed off before piling the rocks.  
The rocks should be piled into the rock compartment over  
the grating, between the heating elements (resistances) so  
that the rocks support each other. The weight of the rocks  
should not lie on the heating elements.  
The rocks should not be piled too tightly, so that air  
can flow through the heater. See figure 1. The rocks  
should be fitted loosely, and not wedged between the  
heating elements. Very small rocks should not be put  
into the heater at all.  
Therocksshouldcompletelycovertheheatingelements.  
However, they should not form a high pile on the elements.  
The rocks disintegrate with use. Therefore, they should  
be rearranged at least once a year or even more often if the  
sauna is in frequent use. At the same time, any pieces of  
rocks should be removed from the bottom of the heater,  
and disintegrated rocks should be replaced with new ones.  
The guarantee does not cover any faults caused by the  
use of rocks not recommended by the plant. Neither does  
the guarantee cover any faults caused by disintegrated or  
too small rocks blocking the heater ventilation.  
No such objects or devices should be placed inside the  
heater rock space or near the heater that could change  
the amount or direction of the air flowing through the  
heater, thus causing the resistance temperature to rise  
too high, which may set the wall surfaces on fire!  
1.3. Control Unit  
1.3.1. Timer  
The heaters JM-17 and JM-20 are switched on by  
using the timer switch. The indicator lights will come  
on. The timer has two scales: the first one (with larger  
figures) is the ”instantly on” section; that is, the  
heater is on for a selected period of time (0–1 hours).  
The other section is the so called ”pre-set section” (1–  
8 hours), which is used to start the heater after a  
certain time. The heater starts when the timer has  
turned the switch back to the ”instantly on” section,  
that is, at number one(1). After this, the heater will be  
on for about 1 hour, unless the switch is turned to zero  
before that. At zero (0), the supply to the elements is  
cut off and the heater is switched off. See fig 2.  
The JM-30 heater is equipped with 1 hour timer  
without pre-set time function. See fig. 2.  
If you wish to use the full 60 min. cycle, turn the  
timer knob past the first 1 to number 2 or 3 on the  
dial. Then turn backward to the large 1 until a click  
is heard. Leave knob at that setting, and Sauna will  
operate for 1 hour before shutting off automatically.  
1.2. Heating of the Sauna  
When the heater is switched on for the first time, both  
theheaterandtherocksemitsmell. Toremovethesmell,  
the sauna room needs to be efficiently ventilated.  
The purpose of the heater is to raise the temperature  
of the sauna room and the sauna rocks to the required  
bathing temperature. If the heater output is suitable  
for the sauna room, it will take about an hour for a  
properly insulated sauna to reach that temperature.  
See item 2.1., ”Insulation and wall materials of the  
Sauna Room”. A suitable temperature for the sauna  
room is about +150°F–+175°F (+65°C–+80°C).  
The sauna rocks normally reach the required bathing  
temperature at the same time as the sauna room. If the  
heatercapacityistoobig, theairinthesaunawillheatvery  
quickly, whereas the temperature of the rocks may  
remain insufficient; consequently, the water thrown on  
the rocks will run through. On the other hand, if the heater  
capacity is too low for the sauna room, the room will heat  
slowly and, by throwing water on the rocks, the bather  
may try to raise the temperature of the sauna. However,  
the water will only cool down the rocks quickly, and after  
a while the sauna will not be warm enough and the heater  
will not be able to provide enough heat.  
In order to make bathing enjoyable, the heater capacity  
should be carefully chosen to suit the size of the sauna  
room. See item 2.3. ”Heater Output”.  
Figure 2.  
Control panel  
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Example 1.  
The humidity of the air in the sauna room is controlled  
by the amount of water thrown on the rocks. A correct  
level of humidity makes the bather’s skin sweat and  
makes breathing easy. By throwing water on the rocks  
with a small ladle, the bather should feel the effect of  
airhumidityonhisskin. Bothtoohighatemperatureand  
air humidity will give an unpleasant feeling.  
Staying in the hot sauna for long periods of time  
makes the body temperature rise, which may be  
dangerous.  
You want to go jogging and have a sauna bath after  
that. The estimated duration of your run is 5 hours.  
Turn the timer clockwise over the scale 0–1 to the pre-  
set section (scale 1–8) at number 4.  
The timer will start, and after four hours, the heater  
will come on. Because it takes about one hour for the  
sauna to be heated, it will be warm and ready for  
bathing after about 5 hours, that is, when you come  
back from your run.  
The maximum volume of the ladle is 2 decilitres.  
The amount of water thrown on the rocks at a time  
should not exceed 2 dl, because if an excessive  
amount of water is poured on the rocks, only part of  
it will evaporate and the rest may splash as boiling  
hot water on the bathers.  
Never throw water on the rocks when there are  
people near the heater, because hot steam may burn  
their skin.  
Example 2.  
If you want to bathe ”immediately” and thus do not  
want to use the pre-set timing, the timer must be set  
to the desired point in the section 0–1. Then, the  
heater will be switched immediately on and the  
sauna will be ready for bathing after about one hour.  
Switch the heater off immediately after bathing  
and check that the sauna rocks are dry. Sometimes  
it may be advisable to leave the heater on for a while  
to let the wooden parts of the sauna dry properly.  
NOTE! It is absolutely necessary to check that the  
timer has cut off the supply of the elements after the  
set time.  
1.4.1. Sauna Water  
The water to be thrown on the heated rocks should  
meet the requirements of clean household water.  
The factors essentially affecting the quality of water  
include the following:  
1.3.2. Thermostat  
humuos content (colour, taste, precipitates);  
recommended content less than 12 mg/litre.  
iron content (colour, smell, taste, precipitates);  
recommended content less than 0,2 mg/litre.  
hardness – the most important substances are  
manganese (Mn) and calcium (Ca); recommended  
content of manganese 0.05 mg/litre, calcium  
less than 100 mg/litre.  
The temperature is adjusted by the thermostat to a  
position between minimum and maximum. See  
figure 2. The correct position of the thermostat  
switch is found by experimenting.  
Begin experimenting at the maximum position (far  
right) to find how quickly the sauna room and rocks  
can be heated to the desired temperature. If, during  
bathing, the temperature seems to be becoming too  
high, turn it down a little by turning the switch  
counter-clockwise. It must be noted that even a  
small difference within the maximum section will  
change the temperature of the sauna considerably.  
Calcareous water leaves a white, sticky layer on  
the rocks and metal surfaces of the heater.  
Calcification of the rocks deteriorates the heating  
properties.  
Ferrous water leaves a rusty layer on the surface  
of the heater and elements, and causes corrosion.  
The use of humous, chlorinated water and  
seawater is forbidden.  
1.3.3. Overheating limiter  
Each heater i equipped with a overheating limiter  
which is a safety device.  
Only special perfumes designed for sauna water  
may be used. Follow the instructions given on the  
package.  
If, for some reason, the temperature of the sauna  
room becomes too high, the overheating limiter will  
permanently cut off the supply of the resistances.  
The overheating limiter cannot be reset to the  
position allowing electricity until the heater has  
cooled down. The overheating limiter is reset by  
pressing the reset button, which is located in bottom  
of heater. See figure 3.  
1.4.2. Temperature and Humidity of the Sauna Room  
To reset the overheating limiter, locate the reset  
button and push upward until contactor kicks in. If  
reset button continues to trip, contact a qualified  
service person.  
Do not remove the overheating limiter bulb. See  
spare parts no. 2.  
Prior to pressing the button, the cause of the fault  
must be found:  
are the rocks crumbled and pressed together?  
has the heater been on for a long time while  
unused?  
has the heater been banged or shaken?  
1.4. Throwing Water on Heated Stones  
The air in the sauna room becomes dry when  
warmed up. Therefore, it is necessary to throw  
water on the heated rocks to reach a suitable level  
of humidity in the sauna.  
Figure 3. Place of the reset button  
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Both thermometers and hygrometers suitable foruse in  
a sauna are available. As the effect of steam on people  
varies, it is impossible to give an exact, universally  
applicable bathing temperature or percentage of  
moisture. The bather’s own comfort is the best guide.  
The sauna room should be equipped with proper  
ventilation to guarantee that the air is rich in oxygen  
and easy to breathe. See item 2.4., ”Ventilation of  
the Sauna Room”.  
Bathing in a sauna is considered a refreshing  
experience and good for the health. Bathing cleans  
and warms your body, relaxes the muscles, soothes  
and alleviates oppression. As a quiet place, the  
sauna offers the opportunity to meditate.  
Consult your doctor about any health-related  
limitations to bathing.  
Parents should keep children away from the hot  
heater.  
Consult your child welfare clinic about taking little  
babies to the sauna.  
- age?  
- temperature of the sauna?  
- time spent in the warm sauna?  
Be very careful when moving in the sauna, as the  
platform and floors may be slippery.  
Never go to a hot sauna if you have taken alcohol,  
strong medicines or narcotics.  
Do not exceed 30 min. in the sauna at one time,  
as excessive exposure can be harmful to health. The  
sauna should not be used as an endurance test!  
Hyperthermia occurs when the internal  
temperature of the body reaches a level several  
degrees above the normal body temperature of  
98,6°F (37°C). The symptoms of hyperthermia  
include an increase in the internal temperature of  
the body, dizziness, lethargy, drowsiness, and  
fainting.  
The effects of hyperthermia include:  
a) Failure to perceive heat  
b) Failure to recognize the need to exit the room  
c) Unawareness of impending hazard  
d) Fetal damage in pregnant women  
e) physical inability to exit the room  
f) Unconsiciousness  
1.5. Instructions for Bathing  
Begin by washing yourself; for example, by  
taking a shower.  
Stay in the sauna for as long as you feel  
comfortable. See item "1.6. Warnings".  
According to established sauna conventions,  
you must not disturb other bathers by speaking  
in a loud voice.  
Do not force other bathers from the sauna by  
throwing excessive amounts of water on the rocks.  
Forget all your troubles and relax.  
Cool your skin down as necessary.  
If you are in good health, you can have a swim  
if a swimming place or pool is available.  
Wash yourself properly after bathing. Have a  
drink of fresh water or a soft drink to bring your  
fluid balance back to normal.  
1.7. Warning signs  
Rest for a while and let your pulse go back to  
normal before dressing.  
Warning signs – are furnished with Sauna heater.  
The metal "CAUTION" sign should be fastened to  
wall, close to heater, in a visible place. The metal  
"WARNING" sign should be fastened outside, to the  
Sauna room door.  
1.6. Warnings  
Sea air and a humid climate may corrode the  
metal surfaces of the heater.  
Do not hang clothes to dry in the sauna, as this  
may cause a risk of fire. Excessive moisture  
content may also cause damage to the electrical  
equipment.  
1.8. Malfunctions  
If the heater does not heat, check the following points:  
the electricity has been switched on  
the timer has been switched to a section where the  
heater should be heated (0–1).  
the thermostat shows a higher figure than the  
temperature of the sauna.  
the fuses to the heater are in good condition.  
(Note. The stud does not always come out when  
the fuse has blown).  
the temperature guard has not gone off. The  
timer sound is heard but the elements are not heated.  
Reset the guard to its functioning position by  
pressing it so that a clicking sound is heard. See  
item 1.3.2., ”Thermostat" and 1.3.3.  
"Overheating limiter".  
Do not place any combustible material over the  
sauna heater (towels, bathing suits, wooden  
bucket or dipper)!  
Keep away from the heater when it is hot. The  
rocks and outer surface of the heater may burn  
your skin.  
Do not throw too much water on the rocks. The  
evaporating water is boiling hot.  
Use only clean tap water on the rocks – Do not  
usepoolorspawater, aschlorinegascanbeproduced  
and the heating elements can be damaged!  
Do not let young, handicapped or ill people bathe  
in the sauna on their own.  
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2. THE SAUNA ROOM  
2.1. Insulation and Wall Materials of the  
Sauna Room  
In an electrically heated sauna, all the massive wall  
surfaces which store plenty of heat (such as bricks,  
glass blocks, plaster etc.), must be sufficiently  
insulated in order to keep the heater output at a  
reasonably low level.  
A wall and ceiling construction can be considered  
to have efficient thermal insulation if:  
the thickness of carefully fitted insulating  
wool inside the house is 4" (100 mm) minimum  
2" (50 mm).  
the moisture protection consists of e.g.  
aluminium paper with tightly taped edges. The  
paper must be fitted so that the glossy side is  
towards the inside of the sauna.  
there is a 3/8" (10 mm) vent gap between the  
moisture protection and panel boards  
(recommendation).  
the inside is covered by 1/2" – 5/8" (12–16 mm)  
thick panelling.  
Figure 4. Sauna room  
there is a vent gap of a few millimetres at the  
top of the wall covering at the edge of the  
ceiling panelling.  
BENCHES  
Use matching wood of vertical  
grain with 2"x 2" tops – 1/2"  
spacing - and 2"x 4" facing,  
fastening from bottom to prevent  
burning of bathers.  
When aiming at a reasonable heater output, it may  
be advisable to lower the ceiling of the sauna  
(normally 6'–10 11/16" (2100 mm), minimum height 59  
1/16" (1500 mm). As a result, the volume of the  
sauna is decreased, and a smaller heater output may  
be sufficient. The ceiling can be lowered so that the  
ceiling joists are fixed at a suitable height. The spaces  
between the joists are insulated (minimum insulation  
4" (100 mm) and surfaced as described above.  
Because heat goes upwards, a maximum distance  
of 38" (970 mm) is recommended between the  
bench and ceiling.  
NOTE! Consult fire-extinguishing authorities to find  
out which part of the fireproof wall may be insulated.  
NOTE! The protection of the walls or ceiling with  
heat protection, such as mineral board fitted directly  
on the wall or ceiling, may cause the temperature of  
the wall and ceiling materials to rise dangerously high.  
HEATER  
GUARDRAIL  
Use matching softwood  
of 1" x 2" or 2" x 2".  
Must open out and should not  
have a lock. Size – 2' 0"x 6'8" with  
fir rails and double sealed,  
tempered glass.  
DOOR  
ROOM LIGHT Should be a vapor proof, wall-  
mounted type, with rough-in box  
mounted flush with inside paneling.  
It should mount 6" (150 mm) from  
ceiling, not directly over the Sauna  
heater, and not over upper  
benches; light bulb should not  
exceed 75 watts.  
Note! Receptacles OR PLUGS are not allowed in a  
Sauna room. If a speaker is installed in a Sauna room,  
it should not be installed higher than 3' from floor,  
away from the Sauna heater (consult manufacturer  
for ratings).  
2.1.1. Room construction – general information  
FRAMING  
2" x 4" Dry Douglas Fir, 16" o.c.  
R11 Fiberglas with foil back in  
walls and ceiling, foil facing  
into room.  
See local codes. Is not  
required in most residences.  
See local codes for  
CEILING HEIGHT No higher than 7' 0".  
INSULATION  
DRYWALL  
2.2. Sauna Room Floor  
Due to a large variation in temperature, the sauna  
rocks disintegrate in use.  
Small pieces of rock are washed down on the  
sauna room floor along with the water thrown on the  
rocks. Hot pieces of rock may damage plastic floor  
coverings installed underneath and near the heater.  
A light-cocoured joint grout, used for a tiled floor,  
may absorb impurities from the rocks and water (e.g  
iron content).  
To prevent aesthetic damage (due to the reasons  
presented above) only dark joint grouts and floor  
coverings made of rock materials should be used  
underneat and near the heater.  
commercial. If drywall is used,  
apply 1" x 2" nailers so that  
wall and ceiling boards can be  
attached to solid wood.  
Use kiln-dried, clear, T & G  
softwood such as California  
Redwood, Western Red Cedar,  
Alaska yellow Cedar, with  
moisture content not exceeding  
11%.  
PANELING  
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2.3. Heater Output  
3. INSTRUCTIONS FOR THE  
INSTALLATION  
When the walls and ceiling are covered with panels,  
and the insulation behind the panels is sufficient to  
prevent thermal flow into the wall materials, the  
heater output is defined according to the cubic volume  
of the sauna. See table 1.  
3.1. Prior to Installation  
Prior to installing the heater, study the  
instructions for installation, as well as checking  
the following points:  
If the sauna has visible uninsulated wall surfaces, such  
as walls covered with brick, glass block, concrete or tile,  
each 10 square feet (ca. 1m²) of said wall surface causes  
thecubicvolumeofthesaunatoincreaseby42 Cu.Ft.(ca.  
1.2m3).Theheateroutputisthenselectedaccordingtothe  
values given in the table.  
Because log walls are heated slowly, the cubic  
volume of a log sauna should be multiplied by 1.5,  
and the heater output should then be selected on the  
basis of this information.  
Is the output and type of the heater suitable for  
the sauna room?  
The cubic volumes given in table 1 should be  
followed.  
Are there a sufficient number of high quality  
sauna rocks?  
Is the supply voltage suitable for the heater?  
The location of the heater fulfils the minimum  
requirements concerning safety distances given  
in fig. 5 and table 1.  
2.4. Ventilation of the Sauna Room  
Sufficient ventilation is extremely important for the  
sauna. The air in the sauna room should be changed  
six times per hour. The fresh air pipe should come  
directly from outside.  
Inlet ventilation openings shall be located at the  
bottom of the wall, as close to the floor level as  
possible.  
It is absolutely necessary to ensure that the  
installation is carried out according to these values.  
Neglecting them can cause a risk of fire.  
Only one electrical heater may be installed in the  
sauna room.  
Outlet ventilation openings shall be located at the  
top of the wall, as close to the ceiling as bossible, and  
shall comply with the minimum size requirements for  
inlet ventilations openings. See fig. 4.  
Sauna shall be provided with intended ventilation as  
required per the local code authorities.  
2.5. Hygienic Conditions of the Sauna Room  
Good hygienic standards of the sauna room will make  
bathing a pleasant experience.  
The use of sauna seat towels is recommended to  
prevent sweat from flowing onto the platforms. The  
towels should be washed after each use. Separate  
towels should be provided for guests.  
It is advisable to vacuum or sweep the floor of the  
sauna room in connection with cleaning. In addition,  
the floor may be wiped with a damp cloth.  
The sauna room should be thoroughly washed at  
least every six months. Brush the walls, platforms  
and floor by using a scrubbing-brush and sauna  
cleanser.  
Figure 5.  
Min. distances to combustible materials  
Wipe dust and dirt from the heater with a damp cloth.  
Table 1.  
Installation details of a JM heater. See fig. 4  
and item 2.3. "Heater output"  
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3.2. Fastening the Heater on a Wall  
1. Fasten the wall-mounting rack on the wall byusing  
the screws which come with the rack. Observe  
the minimum safety distances given in table 1 and  
fig. 5. The fastening of the mounting rack is shown  
in figure 6.  
NOTE! There should be a support, e.g. a board,  
behind the panel, so that the fastening screws can  
be screwed into a thicker wooden material than  
the panel. If there are no boards behind the panel,  
the boards can also be fastened on the panel. See  
figure 4.  
2. Lift the heater onto the rack on the wall so that the  
connecting box switches are easily accessible.  
3. The steam distributor / rock guard must always be  
fastened on the wall side of the heater. To turn the  
distributor / guard, loosen the fastening screw and  
then turn it. See figure 9.  
3.3. Installation capillary tubing and bulb  
Before hooking up electrical wires to junction box of  
heater, remove capillary tubing and bulb from  
junction box and bring up wall to left or right side of  
heater. Cover tubing with wooden molding provided,  
coil up excess tubing, and place under heater close  
to floor.  
Figure 6.  
Location of the mounting rack of  
the heater  
Be sure to cover thermostat bulb with protective  
metal cover by threading bulb through holes in cover,  
and fasten bulb cover to wall with screws provided.  
Also, take care when nailing protective wood strips  
over capillary tubing, so that nails do not puncture  
tubing. If punctured, entire thermostat must be  
replaced. See figure 7.  
3.4. Safety Railing  
If a safety railing is built around the heater, the  
minimum distances given in fig. 8 must be observed.  
Figure 7.  
Installation of the thermostat sensor  
Figure 8.  
Safety railing of the heater  
Figure 9.  
Connections and parts of the heater  
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3.5. Electrical Connections  
The heater may only be connected to the electrical  
network in accordance with the current regulations  
by an authorised, professional electrician.  
Refer to the chart in table 2 to determine the wire  
size and circuit protection required. The complete  
sauna system should be properly grounded as per  
NEC or as required by local codes. A grounding  
terminal is provided in the wiring compartment of  
each heater, complate the wiring according to the  
appropriate wiring figure 10.  
See table 1 for required clearances. Any wiring  
within internal Sauna walls must be rated for 90°C  
(194°F) and copper wire must be used. Run wire  
through seal tight flex conduit from wall to heater  
and connect to junction box.  
Note! If connection to heater will be made at a later  
time, bring flex into Sauna room 4–6" (100–150  
mm) from floor, and leave 3' (900 mm) of flex for  
hookup (can be cut to right lenght later).  
Further instructions concerning exceptional in-  
stallations can be obtained from local electrical  
authorities.  
3.6. Electric heater insulation resistance  
When performing the final inspection of the electrical  
installations, a “leakage” may be detected when  
measuring the heater’s insulation resistance. The  
reason for this is that the insulating material of the  
heating resistors has absorbed moisture from the air  
(storage transport). After operating the heater for a  
few times, the moisture will be removed from the  
resistors.  
Note! A ground fault interrupter (GFI) shoud not be  
installed in and does not belong in a Sauna.  
3.7. Testing of Sauna heater  
Before testing heater, fill rock cavity with igneous  
stones provided with heater and fasten rock guard at  
top of heater. See item 1.1." Piling of the Sauna rocks".  
1. After Sauna heater has been properly wired,  
according to appropriate wiring diagram and local  
codes, turn Sauna breaker on in the main breaker  
panel. (Note! Electrician must label "Sauna"  
breaker.)  
Figure 10.  
Electrical connections of the  
heaters JM-17, JM-20 and JM-30  
2. Turn thermostatic (heat) control to on position  
(this is located on your heater). Set timer to 10 or  
15 minutes.  
3. Within 5 minutes, you should be able to feel heat  
from heater elements when holding your hand over  
heater.  
4. If Sauna does not heat, refer to troubleshooting  
information.  
5. It is normal for smoke to appear during the first  
heating, as protective element coating needs to  
burn off. TURN SAUNA ON FOR 1 HOUR BEFORE  
USING THE FIRST TIME, TO ELIMINATE  
SMOKING.  
Heater Input Voltage Phase Amperage Min. 90°C Copper supply  
Model kW  
JM-17 1,7  
JM-20 2,0  
JM-30 3,0  
wire A.W.G. No.  
120  
120  
240  
1
1
1
14,2  
16,7  
12,5  
12  
12  
14  
Table 2.  
Supply wires  
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3.8. Troubleshooting  
3.10. Maintenance instructions  
A. If sauna does not operate after initial installation  
and wiring:  
1. Check breaker to be sure that it is on. Also,  
breaker should be correct size.  
2. Make sure that a neutral wire has been included  
3. Check circuit breaker in contactor to be sure that  
it has not been shorted out.  
1. Use only clean water on Sauna stones. Do not use  
spa or pool water as it will destroy your heater.  
2. Clean water should always be used in Sauna  
buckets and water should be dumped out after  
every use. Scour buckets and dippers occasionally  
when film collects from usage. Use plastic bucket  
liner in bucket to prevent water leakage.  
4. Be sure that thermostat and timer are both in on  
position.  
5. Be sure that timer winds down. If timer has been  
shorted out, heater will not operate.  
3. Scrub benches with a soft brush, using soap and  
water or a mild disinfectant, when needed - about  
once a week in commercial Saunas, or depending  
upon sauna usage. For sanitation, each bather  
should sit or lie on a towel (this will prolong bench  
life).  
4. Remove Super Dek and wash waterproof floor  
with disinfectant (e.g. Pine Sol) about once a week  
or as often as needed. Hose off Super Dek to clean.  
5. To maintain beautiful appearance of Sauna heater,  
remove water stains by wiping a damp cloth  
occasionally.  
6. Harvia Sauna Heaters require no special  
maintenance when properly installed by a qualified  
electrical contractor. After 1 years of usage, the  
rocks may need replacing if they have crumbled or  
powered.  
B. If sauna has been in operation, but heater ceases  
to operate:  
1. Check breaker to make sure it is on.  
2. Check timer to see if it winds down.  
3. Check high limit reset button in heater (reset is  
under the heater to see if it has been released).  
4. Call your electrician or service person for further  
help.  
C. If Sauna heater operates, but room does not come  
up to Sauna temperature (160–185°F (70–85°C)  
normal Sauna temperature):  
1. You must allow at least 30 minutes for Sauna heat-  
up time.  
7. Harvia Sauna strongly recommends a floor that  
can be easily cleaned (concrete, ceramic tile, or  
a poured type of flooring). When this is provided,  
the Sauna can be easily cleaned and kept in a  
sanitary condition with little effort. A carpet is  
NOT recommended for a Sauna! A carpet  
becomes a perfect breeding ground for bacteria  
in the moist conditions of a Sauna; and a carpet  
promotes the spread of foot diseases such as  
athlete‘s foot. For same reasons, wooden  
duckboard should not be used for flooring.  
8. In new construction, a floor drain should also be  
provided, especially in commersial Saunas for  
sanitary cleaning and maintenance.  
2. Is Sauna thermometer located 6” (150 mm) from  
ceiling, and is it above or close to Sauna heater?  
(This is proper location for Sauna temperature  
reading.) Thermometer readings vary with room  
heights and location. Eg. 180°F (82°C) above  
Sauna heater = 165°F (74°C) on opposite wall =  
140°F (60°C) on upper bench level = 120°F  
(49°C) on lower bench level = 100°F (38°C)at  
floor level.  
3. Check for proper wire size, amp size and proper  
wiring (according to diagrams and information)  
also necessary copper wiring.  
4. Check for placement of stones to make sure they  
are loosely spaced around elements, to insure  
good air flow. Stones packed too tightly will  
restrict air flow and reduce heating capacity.  
5. Check for heat loss (around or under door, around  
ceiling light or fan – we do not recommend ceiling  
light and a fan does not belong in the Sauna.  
6. Is room properly insulated?  
9. Seal wood around glass in door - inside and outside  
– with Thompson‘s Water Seal to prevent  
warpage.  
10. When Sauna wood becomes stained from  
perspiration, the wood may lightly sanded with fine  
sandpaper to restore beautiful appearance. We do  
not recommend stains or sealers as toxic vapors  
may appear when heated. However, 2 coats of  
Thompson‘s Water Seal may be used on the wood  
benches in a commersial Sauna, so that the wood  
may be more easily cleaned and kept sanitary – the  
wood will not absorb perspiration.  
7. Is ceiling higher than in figure 4?  
8. After checking all of the above, remove rocks and  
check heater elements for holes or burned areas.  
(Only if heater has been in use for some time.)  
11. The Sauna room will heat faster if the higher vent  
is kept in a closed position when heating. The lower  
vent may always be kept in an open position.  
12. Required warning signs should be posted  
according to the instructions.  
3.9. Caution! Electrician or service person!  
1. Before servicing heater, control, or contactor, turn  
power off at breaker!  
2. Open junction box to make sure wires are tightly  
secured with no loose connections. Heater wire  
and all connecting wires should be copper.  
3. Check for burned spots or short in wiring of timer  
or thermostat.  
10  
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3.11. Guarantee  
stones; only one or two dippers ful of water should be  
poured over the hot stones at one time. This guarantee  
will be void if a shower has been installed in the Sauna  
room.  
The guarantee does not cover delivery costs of the  
faulty part or costs of the person carrying out the  
repair in the field. If the Sauna heater is returned to  
the manufacturer or manufacturer‘s agent within  
five years after date of purchase, the agent will  
provide free labor for repair, but will charge for parts  
if date of purchase is past one year.  
This guarantee will be void if installation and wiring  
is not carried out by a certified electrician or  
authorized and qualified service representative, who  
must sign below.  
This guarantee will be void if information below is  
not filled out and returned within 15 days of  
purchase, and it applies only to original installation of  
product and to original purchaser.  
This HARVIA SAUNA heater is guaranteed for one  
year date of purchase, and includes all heater parts  
such as heating elements, controls, contactors, etc.  
This guarantee covers faults in manufacture and  
material only, and includes the exchange of new parts  
supplied by the manufacturer or manufacturer‘s agent,  
after the faulty parts have been returned to same. The  
replacement of parts under warranty does not extend  
the warranty period beyond the original one year.  
The guarantee does not cover defects caused by  
normal wear and tear, defects caused by improper  
installation, poor maintenance, or failure to follow  
the manufacturer‘s instructions for installation, use  
and care, or alterations made to the Sauna product.  
This guarantee is void if the heater is used  
improperly. Pool or spa water should not be poured  
over the Sauna stones, as chemicals are harmful to  
the heater; the Sauna room must be heated for at  
least 30 minutes before water is poured over the  
SAUNA HEATER  
MODEL NUMBER  
______________________________________________  
______________________________________________  
DATE OF PURCHASE  
ORIGINAL OWNER  
ADDRESS  
______________________________________________  
______________________________________________  
______________________________________________  
______________________________________________  
PURCHASED FROM  
______________________________________________  
______________________________________________  
ELECTRICAL CONTRACTOR  
MUST SIGN HERE  
______________________________________________  
______________________________________________  
DATE OF ELECTRICAL  
WIRING & HOOKUP  
11  
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4. SPARE PARTS  
2.  
3.  
4.  
4.  
5.  
6.  
7.  
7.  
8.  
9.  
9.  
Overheating limiter  
Thermostat  
Timer 1+8 / 120V  
Timer 1h/240V  
Fitting  
Supply terminal block  
Lamp  
Lamp 240 V  
ZSV-330  
ZSK-762  
ZSJ-290  
ZSA-720  
ZSK-555  
ZSK-779  
ZSJ-245  
ZSA-530  
ZSA-480  
ZSJ-3  
10.  
11.  
12.  
13.  
14.  
15.  
16.  
17.  
18.  
19.  
20.  
Knob + Cap  
Mounting rakk  
Rock guard  
Wooden fence  
Water cask  
Axlelock ø6  
Control compartment cover ZSV-150S  
Bulb cover  
ZSA-660  
ZSJ-170  
ZSJ-180  
ZSJ-190  
ZSJ-200  
ZSA-580  
JM-30  
ZSK-750  
ZSJ-110  
ZSJ-320  
ZSJ-330  
JM-30  
JM-30  
Control box plastic part  
Scale plate  
Scale plate  
Heating element  
Heating element  
Heating element  
JM-17  
JM-20  
JM-30  
ZSA-670  
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