Harvia L30 User manual

23112021/Y05-0963
Harvia L30
Instructions for Installation and Use of Electric Sauna Heater

CONTENTS
1. INSTRUCTIONS FOR USE.............................................. 3
1.1. Piling of the Sauna Stones.....................................3
1.1.1. Maintenance ............................................... 3
1.2. Heating of the Sauna ............................................3
1.3. Control Unit of Heater........................................... 3
1.4. Throwing Water on Heated Stones .........................3
1.5. Instructions for Bathing ........................................4
1.6. Warnings ............................................................ 4
1.6.1. Symbols descriptions.................................... 4
1.7. Troubleshooting ................................................... 4
2. SAUNA ROOM............................................................. 5
2.1. Sauna Room Structure ..........................................5
2.1.1. Blackening of the Sauna Walls .......................5
2.2. Sauna Room Ventilation ........................................6
2.3. Heater Output...................................................... 6
2.4. Sauna Room Hygiene............................................ 6
3. INSTRUCTIONS FOR THE INSTALLATION .......................7
3.1. Prior to Installation ...............................................7
3.2. Fixing the heater on the floor.................................7
3.3. Safety Railing ...................................................... 7
3.4. Electrical Connections...........................................7
3.4.1. Installation of Control Unit and Sensor............7
3.4.2. Electric Heater Insulation Resistance...............7
4. SPARE PARTS ............................................................. 8
These instructions for installation and use
are intended for the owner or the person in
charge of the sauna, as well as for the electrician in
charge of the electrical installation of the heater.
After completing the installation, the person in
charge of the installation should give these
instructions to the owner of the sauna or to the
person in charge of its operation. Please read the
instructions for use carefully before using the heater.
The heater is designed for the heating of a sauna
room to bathing temperature. It is not to be used
for any other purpose.
Congratulations on your choice!
Guarantee:
• The guarantee period for heaters and control
equipment used in saunas by families is two (2)
years.
• The guarantee period for heaters and control
equipment used in saunas by building residents
is one (1) year.
• The guarantee does not cover any faults
resulting from failure to comply with
installation, use or maintenance instructions.
• The guarantee does not cover any faults
resulting from the use of stones not
recommended by the heater manufacturer.
• The guarantee period for heaters and control
equipment used in saunas by institutions is
three (3) months.
P.O.Box 12,
Teollisuustie 1-7
40951 Muurame, FINLAND
[phone]
[email protected]

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1. INSTRUCTIONS FOR USE
1.1. Piling of the Sauna Stones
The piling of the sauna stones has a great effect on
the functioning of the heater (figure 1).
Important information on sauna stones:
• The stones should be 5–10 cm in diameter.
• Use solely angular split-face sauna stones that
are intended for use in a heater. Peridotite,
olivine-dolerite and olivine are suitable stone
types.
• Neither light, porous ceramic “stones“ nor soft
soapstones should be used in the heater. They
do not absorb enough heat when warmed up.
This can result in damage in heating elements.
• Wash off dust from the stones before piling
them into the heater.
Please note when placing the stones:
• Do not drop stones into the heater.
• Do not wedge stones between the heating
elements.
• Place the stones sparsely to ensure that air can
circulate between them.
• Pile the stones so that they support each other
instead of lying their weight on the heating
elements.
• Do not form a high pile of stones on top of the
heater.
• No such objects or devices should be placed
inside the heater stone space or near the heater
that could change the amount or direction of
the air flowing through the heater.
1.1.1. Maintenance
Due to large variation in temperature, the sauna
stones disintegrate in use. Rearrange the stones at
least once a year or even more often if the sauna
is in frequent use. At the same time, remove any
pieces of stones from the bottom of the heater and
replace any disintegrated stones with new ones. By
doing this, the heating capability of the heater stays
optimal and the risk of overheating is avoided.
Figure 1. Piling of the sauna stones
1.2. Heating of the Sauna
When operating the heater for the first time, both
the heater and the stones emit smell. To remove
the smell, the sauna room needs to be efficiently
ventilated.
If the heater output is suitable for the sauna
room, it will take about an hour for a properly
insulated sauna to reach the required bathing tem-
perature ( 2.3.). The sauna stones normally reach
the bathing temperature at the same time as the
sauna room. A suitable temperature for the sauna
room is about 65–80 °C.
1.3. Control Unit of Heater
The L model heaters can be controlled with the
following control units:
• CX45J + LTY45J
See the instructions for use of the selected control
unit model.
Before switching the heater on always check
that there isn’t anything on top of the heater
or inside the given safety distance. 1.6.
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 stones to reach a suitable
level of humidity in the sauna. The effect of heat
and steam on people varies – by experimenting,
you can find the levels of temperature and humidity
that suit you best.
Never throw water on the stones when there
are people near the heater, because hot
steam may burn their skin. The maximum volume
of the ladle is 0.2 litres.
The water to be thrown on the heated stones
should meet the requirements of clean household
water (table 1). Only special aromas designed for
sauna water may be used. Follow the instructions
given on the package.

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Table 1. Water quality requirements
Water properties Effect Recommendation
Humus concentration Colour, taste, precipitates <12 mg/l
Iron concentration Colour, odour, taste, precipitates <0,2 mg/l
Manganese (Mn) concentration Colour, odour, taste, precipitates <0,10 mg/l
Hardness: most important substances are
magnesium (Mg) and lime, i.e. calcium (Ca)
Precipitates Mg: <100 mg/l
Ca: <100 mg/l
Chloride-containing water Corrosion Cl: <100 mg/l
Chlorinated water Health risk Forbidden to use
Seawater Rapid corrosion Forbidden to use
Arsenic and radon concentration Health risk Forbidden to use
1.5. Instructions for Bathing
• Begin by washing yourself.
• Stay in the sauna for as long as you feel com-
fortable.
• Forget all your troubles and relax.
• 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
stones.
• Cool your skin down as necessary. If you are in
good health, you can have a swim if a swim-
ming place or pool is available.
• Wash yourself after bathing.
• Rest for a while and let your pulse go back to
normal. Have a drink of fresh water or a soft
drink to bring your fluid balance back to normal.
1.6. Warnings
• Staying in the hot sauna for long periods of
time makes the body temperature rise, which
may be dangerous.
• Keep away from the heater when it is hot. The
stones and outer surface of the heater may
burn your skin.
• Keep children away from the heater.
• Do not let young, handicapped or ill people
bathe in the sauna on their own.
• Consult your doctor about any health-related
limitations to bathing.
• Consult your child welfare clinic about taking
little babies to the 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 alco-
hol, strong medicines or narcotics.
• Never sleep in a hot sauna.
• 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.
• Do not clean the sauna heater with a water jet.
1.6.1. Symbols descriptions
Read operators manual.
Do not cover.
1.7. Troubleshooting
All service operations must be done by profes-
sional maintenance personnel.
The heater does not heat.
• Check that the fuses to the heater are in good
condition.
• Check that the connection cable is connected
( 3.4.).
• Check that the control panel shows a higher
figure than the temperature of the sauna.
• Check that the overheat protector has not gone
off.
The sauna room heats slowly. The water thrown
on the sauna stones cools down the stones
quickly.
• Check that the fuses to the heater are in good
condition.
• Check that all heating elements glow when the
heater is on.
• Turn the temperature to a higher setting.
• Check that the heater output is sufficient ( 2.3.).
• Check the sauna stones ( 1.1.). Too tightly
piled stones, the settling of stones with time
or wrong stone type can hinder the air flow
through the heater, which results in reduced
heating efficiency.
• Check that the sauna room ventilation has been
arranged correctly ( 2.2.).
The sauna room heats quickly, but the
temperature of the stones remain insufficient.
Water thrown on the stones runs through.
• Check that the heater output is not too high ( 2.3.).
• Check that the sauna room ventilation has been
arranged correctly ( 2.2.).
Panel or other material near the heater blackens
quickly.
• Check that the requirements for safety
distances are fulfilled ( 3.1.).
• Check the sauna stones ( 1.1.). Too tightly
piled stones, the settling of stones with
time or wrong stone type can hinder the air
flow through the heater, which may result in
overheating of surrounding materials.
• Also see section 2.1.1.
The heater emits smell.
• See section 1.2.
• The hot heater may emphasize odours mixed
in the air that are not, however, caused by the
sauna or the heater. Examples: paint, glue, oil,
seasoning

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2. SAUNA ROOM
A
GC
E
F
D
A
B
2.1. Sauna Room Structure
A. Insulation wool, thickness 50–100 mm. The
sauna room must be insulated carefully so that
the heater output can be kept moderately low.
B. Moisture protection, e.g. aluminium paper.
Place the glossy side of the paper towards the
sauna. Tape the seams with aluminium tape.
C. Vent gap of about 10 mm between the mois-
ture protection and panel (recommendation).
D. Low mass 12–16 mm thick panel board. Before
starting the panelling, check the electric wiring
and the reinforcements in the walls required by
the heater and benches.
E. Vent gap of about 3 mm between the wall and
ceiling panel.
F. The height of the sauna is usually 2100–2300 mm.
The minimum height depends on the heater (see
table 2). The space between the upper bench
and ceiling should not exceed 1200 mm.
G. Use floor coverings made of ceramic materials
and dark joint grouts. Particles disintegrating
from the sauna stones and impurities in the
sauna water may stain and/or damage sensitive
floor coverings.
NOTE! Check from the fire authorities which parts
of the firewall can be insulated. Flues which are in
use must not be insulated.
NOTE! Light protective covers which are installed
directly to the wall or ceiling may be a fire risk.
Figure 2.
2.1.1. Blackening of the Sauna Walls
It is perfectly normal for the wooden surfaces of the
sauna room to blacken in time. The blackening may
be accelerated by
• sunlight
• heat from the heater
• protective agents on the walls (protective
agents have a poor heat resistance level)
• fine particles disintegrating from the sauna
stones which rise with the air flow.

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2.2. Sauna Room Ventilation
The air in the sauna room should change six times
per hour. Figure 3 illustrates different sauna room
ventilation options.
A. Supply air vent location. If mechanical exhaust
ventilation is used, place the supply air vent
above the heater. If gravity exhaust ventilation
is used, place the supply air vent below or next
to the heater. The diameter of the supply air
pipe must be 50–100 mm. Do not place the
supply air vent so that the air flow cools the
temperature sensor ( 3.4.1.)!
B. Exhaust air vent. Place the exhaust air vent
near the floor, as far away from the heater as
possible. The diameter of the exhaust air pipe
should be twice the diameter of the supply air
pipe.
C. Optional vent for drying (closed during heating
and bathing). The sauna can also be dried by
leaving the door open after bathing.
D. If the exhaust air vent is in the washroom, the
gap underneath the sauna door must be at
least 100 mm. Mechanical exhaust ventilation
is mandatory.
D
B
min. 500 mm
min.
500 mm
min. 1000 mm
360°
180°
Figure 3.
2.3. Heater Output
When the walls and ceiling are covered with panels
and insulation behind the panels is adequate, the
heater output is defined according to the volume of
the sauna. Non-insulated walls (brick, glass block,
glass, concrete, tile, etc.) increase the need for heater
output. Add 1,2 m³ to the volume of the sauna for
each non-insulated wall square meter. For example, a
10 m³ sauna room with a glass door equals the output
requirement of about a 12 m³ sauna room. If the sau-
na room has log walls, multiply the sauna's volume by
1,5. Choose the correct heater output from table 2.
2.4. Sauna Room Hygiene
Bench towels should be used during bathing to pre-
vent sweat from getting onto the benches.
The benches, walls and floor of the sauna should
be washed thoroughly at least every six months.
Use a scrubbing brush and sauna detergent.
Wipe dust and dirt from the heater with a damp
cloth. Remove lime stains from the heater using a
10% citric acid solution and rinse.

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3. INSTRUCTIONS FOR THE INSTALLATION
3.1. Prior to Installation
Prior to installing the heater, study the instructions
for installation, as well as checking the following
points:
• Is the output and type of the heater suitable for
the sauna room?
The cubic volumes given in table 2 should be fol-
lowed. See item 2.3.
• Are there a sufficient number of high quality
sauna stones?
• Is the supply voltage suitable for the heater?
• The location of the heater fulfils the minimum
requirements concerning safety distances given
in fig. 4 and table 2.
It is absolutely necessary to ensure that the instal-
lation is carried out according to these values. Ne-
glecting them can cause a risk of fire.
• Only one electrical heater may be installed in
the sauna room.
• The heater should be installed so that the
warning texts can also be read without diffi-
culty after the installation.
• L heaters have not been approved to be in-
stalled in a recess in the wall or floor.
3.2. Fixing the heater on the floor
The heater is fixed to the floor at its two legs, at
the legs’ fixing points.
Before fixing the heater, the minimum safety dis-
tances to combustible materials must be taken into
consideration. See Table 2 and Figure 4.
3.3. Safety Railing
If a safety railing is built around the heater, the mini-
mum distances given in figure 4 must be observed.
3.4. Electrical Connections
The heater may only be connected to the
electrical network in accordance with the cur-
rent regulations by an authorised, professional elec-
trician.
• The heater is semi-stationarily connected to the
junction box on the sauna wall. The junction
box must be splash-proof, and its maximum
height from the floor must not exceed 500 mm.
• The connection cable must be of rubber cable
type H07RN-F or its equivalent.NOTE! Due to
thermal embrittlement, the use of PVC-insulat-
ed wire as the connection cableof the heater is
forbidden.
• If the connection and installation cables are
higher than 1000 mm from the floor in the sau-
Heater Power Group power Saunaroom Fuses [A] 200 VAC
3-phase
Cubic. vol. Height Front fuse Group fuse
Width 500 mm
Depth 900 mm
Height 730 mm
Weight 60 kg
Stones 100 kg kW
2.3.
kW min. m3max
m3min. mm A A
L30 29.6 14.8 40 56 2200 3 x 90 3 x 50
Table 2. Installation details of a L heater
na or inside the sauna room walls, they must
be able to endure a minimum temperature of
170 °C when loaded (for example, SSJ). Elec-
trical equipment installed higher than 1000 mm
from the sauna floor must be approved for use
in a temperature of 125 °C (marking T125).
• The wiring diagrams are included in the control
unit’s installation instruction.
• Further instructions concerning exceptional
installations can be obtained from local electri-
cal authorities.
3.4.1. Installation of Control Unit and Sensor
Detailed instructions for the installation of both the
unit and the sensor are delivered with the control
unit.
The sensor must be installed exactly in the
specified place. Otherwise the heater may not
function properly.
The supply air vent of the sauna room must
not be located near the temperature sensor.
The air flow near an air vent cools down the sensor,
which gives inaccurate temperature readings to the
control unit. As a result, the heater might overheat.
The air vent’s minimum distance from the sensor:
• omnidirectional air vent: 1000 mm
• air vent directed away from the sensor: 500 mm
The sensor must be installed to the place defined
in these instructions. If the minimum distance is not
fulfilled, ventilation must be changed.
3.4.2. 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 elements has absorbed moisture from the
air (storage/transport). After operating the heater
for a few times, the moisture will be removed from
the heating elements.
Do not connect the power feed for the heater
through the RCD (residual current device)!

Figure 4. Safety distances (all
dimensions in millimeters)
B
min. 100 A
min.
200
A min. B min.
L30 200 1500
Figure 5. The heater’s electrical connections
4. SPARE PARTS
Model Heating element/Part no.
L30 ZSK-745I
We recommend to use only the manufacturer’s spare parts.