Harvia PO10E User manual

20032023 / Y05-0914 B
PO10E, PO12E, PO15E
Instructions for Installation and Use of Electric Sauna Heater
PO15EPO10E, PO12E

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 .........................4
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 .......................6
2.2. Sauna Room Ventilation ........................................ 6
2.3. Heater Output...................................................... 6
2.4. Sauna Room Hygiene............................................ 6
3. INSTRUCTIONS FOR INSTALLATION .............................. 7
3.1. Before Installation ................................................ 7
3.2. Place and Safety Distances of the Heater ................7
3.3. Electrical Connections...........................................7
3.3.1. Installation of Control Unit and Sensor............ 8
3.3.2. Electric Heater Insulation Resistance...............8
3.4. Installing the Heater .............................................8
4. SPARE PARTS ........................................................... 10
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.

EN
3
1. INSTRUCTIONS FOR USE
Figure 1. Piling of the sauna stones
1.1. Piling of the Sauna Stones
The piling of the stones is illustrated in figure 1.
PO10E, PO12E: You will need
• ca 40 kgs of small stones (diameter 5–10 cm)
• ca 80 kgs of large stones (diameter 10–15 cm).
PO15E: You will need
• ca 220 kgs of large stones (diameter 10–15 cm).
Wash off dust from the stones before piling them
into the heater.
1. Cover the heater body with stones completely.
Use stones that fit easily between the heater
body and the steel frame.
2. Place stones with suitable shape between and
around the heating elements. Do not wedge
stones between the heating elements. Pile the
stones so that they support each other instead
of lying their weight on the heating elements.
Place large stones against the steel frame.
Cover the heating elements with stones com-
pletely. A bare heating element can endanger
combustible materials even outside the safety
distances.
3. Fill the upper part of the steel frame with
stones. Place the stones loosely so that air can
flow between them. Do not form a high pile of
stones on top of the steel frame.
Note!
• Use solely angular split-face sauna stones that
are intended for use in a heater. Peridotite, oliv-
ine-dolerite and olivine are suitable stone types.
• Neither light, porous ceramic “stones“ nor soft
potstones should be used in the heater. They
do not absorb enough heat when warmed up.
This can result in damage in heating elements.
• Rounded stones should not be used in the heat-
er. They tend to pile too tightly and block the
air flow in the heater.
• The guarantee does not cover any faults
caused by the use of stones not recommended
by the manufacturer.
• 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. 3.2.
PO10E
PO12E:
Ø 5–10 cm
1.1.1. Maintenance
Due to large variation in temperature, the sauna
stones disintegrate in 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, remove any pieces of stones from the bottom
of the heater and replace any disintegrated stones
with new ones.
The guarantee does not cover any faults caused
by disintegrated or too small stones blocking the air
flow in the heater.
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 temperature (
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
60–80 °C.
1.3. Control Unit of Heater
The PO heaters require a separate control unit to
operate the heater. The heaters can be controlled
with the following control units:
• CX45J
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.

EN
4
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.
You can adjust the nature of the heat from soft to
sharp by throwing water either to the front of the
heater or straight on top of the stones.
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.
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
Table 1. Water quality requirements
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.
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. ( 3.5.)
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
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

EN
5
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 ( 3.2.).
• Check the sauna stones ( 1.1.). Too tightly
piled stones, the settling of stones with
time or wrong stone type can hinder the air
A
GC
E
F
D
A
B
Figure 2.
.
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.
flow through the heater, which may result in
overheating of surrounding materials.
• Check that no heating elements can be seen
behind the stones. If heating elements can be
seen, rearrange the stones so that the heating
elements are covered completely ( 1.1.).
• 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.
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.
2. SAUNA ROOM