HARVIA PO11 Legend Sauna Heater Instruction Manual

HARVIA PO11 Legend Sauna Heater

Product View

Introduction

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 period for heaters and control equipment used in saunas by institutions is three (3) months.
• 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.

INSTRUCTIONS FOR USE

Piling of the Sauna Stones
Sauna heater stones are significant in terms of the unit’s safety. In order for the warranty to remain valid, the user is responsible for proper maintenance of the stone space in accordance with the specifications and instructions.

Important information on suitable sauna stones:

• Suitable sauna stone materials are peridotite, olivine diabase, olivine and vulcanite.
• Only use cleavage surface and/or rounded stones for your sauna heater.
• If the heating elements of an electric sauna heater are in contact with the stones, rounded stones may only be used in the outer layers of the stone space, so that they do not come into contact with the heating elements.
• Ceramic stones and decorative stones may only be used if they have been approved by the manufacturer and are used according to the their instructions.
• Note that decorative stones are only suitable on the top layer of the stone space. Decorative stones must be placed loosely to ensure sufficient air circulation. Place any decorative stones so that they do not touch the heating elements of an electric sauna heater. If you have a woodburning stove, make sure the stones do not touch the stove’s hot inner frame.
• The warranty does not cover any defects that have been caused by the use of decorative stones or by sauna 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

The piling of the stones is illustrated in figure 1.

PO11: You will need

• ca 40 kgs of small stones (diameter 5–10 cm)
• ca 80 kgs of large stones (diameter 10–15 cm).

PO165: 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 completely. 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.

Figure 1. Piling of the sauna stones

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.

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.

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:

• Harvia C150
• Harvia C150VKK
• Harvia C260
• Harvia Griffin

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.

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.

Table 1. Water quality requirements

Instructions for Bathing

• Begin by washing yourself.
• Stay in the sauna for as long as you feel comfortable.
• 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 swimming 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.

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 alcohol, 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.

Symbols descriptions

Read operators manual.
Do not cover.

Troubleshooting

All service operations must be done by professional 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 arranged correctly ( 2.2.).

The sauna room heats quickly, but the temperature of the stones remain insufficient.
Water thrown on the stones runs through.

• Turn the temperature to a lower setting.
• 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 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.

SAUNA ROOM

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 moisture 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.

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.

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 ( 3.3.1.)!
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.

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 sauna room has log walls, multiply the sauna’s volume by 1,5. Choose the correct heater output from table 2.

Sauna Room Hygiene

Bench towels should be used during bathing to prevent 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.

INSTRUCTIONS FOR INSTALLATION

Before Installation

Before installing the heater, study the instructions for installation. Check 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 followed.
• The location is suitable for the heater (see item 3.2. “Place and Safety Distances of the Heater”).
• Is the supply voltage suitable for the heater?
• Are there a sufficient number of high quality sauna stones?

Table 2. Installation details

Place and Safety Distances of the Heater

The minimum safety distances are described in fig. 4.

• It is absolutely necessary to install the heater according to these values. Neglecting them causes a risk of fire.
• Hot pieces of stone can damage floor coverings and cause a risk of fire. The floor coverings of the installation place should be heat-resistant.
• The heater should be installed so that the warning texts on the cover of the junction box can be read without difficulty after the installation.

Figure 4. Safety distances (all dimensions in millimeters)

Electrical Connections

The heater may only be connected to the electrical network in accordance with the current regulations by an authorised, professional electrician.

• The heater is semi-stationarily connected to the junction box (figure 5) 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 (figure 5: C) must be of rubber cable type H07RN-F or its equivalent.
  NOTE! Due to thermal embrittlement, the use of PVC-insulated wire as the connection cable of the heater is forbidden.

The heater’s electrical connections

| kW| A ML/MK/MMJ
mm2| B ML/MK/MMJ
mm2| C H07RN-F
mm2| D SSJ
mm2| A
PO11| 11,0| 5 x 2,5| 5 x 2,5| 5 x 2,5| 4 x 0,25| 3 x 16
PO165| 16,5| 5 x 6,0| 5 x 6,0| 5 x 2,5| 4 x 0,25| 3 x 25

The heater’s electrical connections in two groups

A

PO165| 16,5| 5 x 6,0| 5 x 2,5 (x 2)| 5 x 2,5 (x 2)| 4 x 0,25| 3 x 25

Figure 5. Electrical connections

• If the connection and installation cables are higher than 1000 mm from the floor in the sauna or inside the sauna room walls, they must be able to endure a minimum temperature of 170 °C when loaded (for example, SSJ). Electrical 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 electrical authorities.

Installation of Control Unit and Sensor

Install the sensor as shown in figure 6. 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 (figure 6):

• 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 (figure 6). If the minimum distance is not fulfilled, ventilation must be changed.

Option 1:
Sensor (installed on ceiling)

Option 2:
Sensor (installed on wall)

| A min.–max.| B min.–max.| C
---|---|---|---
PO11| 100–150| 100–200| 100
PO165| 200–300| 150–300| 100

Figure 6. Installing the Temperature Sensor (all dimensions in millimeters)

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)!

Installing the Heater

See figure 7.

1. Connect the connection cable to the heater (see item 3.3. “Electrical Connections”).
2. Place the heater body. Adjust the body vertically straight with the adjustable legs.
3. Place the steel frame. Adjust the frame vertically straight with the adjustable legs (PO165 only).

Figure 7. Installing the heater

SPARE PARTS

We recommend to use only the manufacturer’s spare parts.

GLOBAL: P.O.Box 12 | Teollisuustie 1-7 | 40951 Muurame | FINLAND | +358 207 464 000 | harvia@harvia.fi | www.harvia.com
CENTRAL EUROPE: Sentiotec GmbH | Division of Harvia Group |
T +43 (0) 7672/22 900-50 | F -80 | info@sentiotec.com | www.sentiotec.com
Е-mail: spb@accountor.ru

References

• Harvia
• sentiotec

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>