Narvi NS Mini Domestic Electric Sauna Heater Instruction Manual

: June 12, 2024
: NARVI

Narvi NS Mini Domestic Electric Sauna Heater

Narvi--NS-Mini-Domestic-Electric-Sauna-Heater-fig-1

Product Information

The product is called Narvi Minex, which is a sauna heater. It comes in two models: Narvi Minex 2.3kW and Narvi NS. The technical specifications of the product are as follows:

Width: 330mm
Depth: 335mm
Height: 630mm (Minex) / 600mm (NS)
Weight: 7kg (Minex) / 6kg (NS) (without stones)

Product Usage Instructions

Before installation, make sure to check that the sauna stove is the right size (kW) for the size of the sauna (cu m).
Refer to Table 1 in the manual for the volumes of the sauna for different types of stoves.
If the sauna has non-insulated surfaces like brick, tile, or glass, add 1.5 cu m to the sauna volume for each square meter of wall to determine the required stove effect.
Follow the installation instructions provided in the manual, including mounting the sauna stove jacket, stone basket with control device, and mounting plate with anchor screws.
Ensure proper electrical connection according to the specified voltage and frequency (e.g., 230V 50Hz or 230V 1N~).
During stone stacking, make sure not to hinder the process.
Adjust the temperature using the control device.
Ensure proper ventilation in the sauna.
Do not sleep in the sauna.
Please read the manual carefully before you start installing and using the product and keep the manual for future reference. The product is meant only to be used as a sauna heater and for heating the sauna.

Please read the manual carefully before you start installing and using it and keep the manual for future reference. The products are meant only to be used as a sauna heater and for heating the sauna.

TECHNICAL DATA

	MINEX	NS
Width, mm	330	335
Depth, mm	200	200
Height, mm	630	600
Weight, kg (without stones)	7	6

THE ELECTRICAL SAUNA STOVE PACKAGE INCLUDES:

Sauna stove jacket
Stone basket with control device
Mounting plate + anchor screws
Installation instructions and instructions how to use

BEFORE INSTALLATION:

Check the following:

The sauna stove is the right size (kW) for the size of the sauna (cu m).
Table 1 shows the volumes of the sauna for the different types of stoves.
If the sauna has non-insulated surfaces, for instance brick, tile or glass, 1.5 cu m must be added to the sauna volume for each square metre of wall on the basis of which the effect needed for the sauna stove is defined according to Table 1.

The volume values of the sauna according to Table 1 must not be exceeded or lowered.

The minimum height of the sauna and the distances of the minimum protected areas have been defined in Table 1.
Make sure that there is a sufficiently steady mounting plate for the anchor screws. A thin panel alone is not enough. Additional supporting rails behind the panel or reinforcement boards on the top of the panel which are fastened to the wall support can be a reinforcement.
Heater model| Capacity

kW

| Sauna room| Minimal safety clearances to the heater| Quantity of stones 5-10

cm

kg

| Connection *)
---|---|---|---|---|---
Volume| Height

min mm

| on the sides

A **) mm

| at the front

B **) mm

| at the front

C **) mm

| to the ceiling

D **) mm

| to the floor

E **) mm

| 230 V 1N~

mm2

| Fuses

A

min m3| max m3
MINEX| 2,3

3

3,6

| 1,5

2

| 2,5

3

4

| 1900

1900

| 20

20

| 50

50

| 20

20

| 900

900

| 150

150

| 15

15

| 3×1,5

3×2,5

| 1×10

1×16

NS| 2,3

3

3,6

| 1,5

2

| 2,5

3

4

| 1900

1900

| 50

50

| 50

50

| 20

20

| 900

900

| 150

150

| 20

20

| 3×1,5

3×2,5

| 1×10

1×16

ONLY ONE ELECTRICAL STOVE CAN BE INSTALLED IN THE SAUNA.
All service operations must be done by professional maintenance personnel. Electricity supply to the heater must be switched off from the fuse panel before any service measures.

Narvi--NS-Mini-Domestic-Electric-Sauna-Heater-fig-3

INSTALLATION:

Fasten the mounting plate to the wall with the screws which follow the delivery according to the picture 2.

ELECTRICAL CONNECTION

The connection of the sauna stove to the electrical network can only be carried out by a qualified electrician in accordance with the valid regulations.
A rubber cable of type H07RN-F or similar must be used as a connection cable.
The cross-sectional surface of the cable and the size of the fuse can be seen in Table 1.
The cross-sectional surfaces of the wires which are connected from the sauna stove to the heating and signal lights must correspond to the feed cable of the sauna stove.
First connect the connection cable to the terminal strip in the connection box of the sauna stove.
Turn the stone room+electrical box upside down.
Open the bottom of the electrical box.
Connect the connection cable.
Fasten the bottom of the box.
Turn the stone room+electrical box right side up.

INSTALLATION ON THE WALL

Draw in the lugs on the rear side of the sauna stove through the mounting slots of the mounting plate on the wall (Fig.6A).
Push the upper edge of the mounting plate between the jacket and upper frame of the sauna stove and make sure that the lugs of the stove are wedged into the slots of the mounting plate on the wall (Figure 6B).
Tighten the upper edge of the sauna stove with a locking screw (Figure 6C).
The stone basket is now locked in the jacket and on the mounting plate of the sauna stove.

TO PILE THE STONES

The stones are piled on the top of the grate in the stone capacity, place them between and around of the heating elements (resistors) so that the stones support each other. Please make sure that the resistors are not supporting the weight of the stones.
When piling the stones, make sure that the resistors are not bending and there is sufficient air circulation.
Do not pile the stones densely. A stone basket which has been filled too densely causes overheating of the resistors (= a shorter lifetime) and slows down warming up the sauna.
The stone size diameter suitable for the sauna stove is 5-10 cm.
The stones must completely cover the heating resistors (Figure 7).
Use of ceramic stones that are light, porous and of the same size is prohibited, as they can cause the resistors to heat up too much and break. Similarly, soft soap stones cannot be used as sauna heater stones.
DO NOT USE THE SAUNA HEATER WITHOUT STONES.
A STONE SPACE NOT BEEN FILLED COMPLETELY IS A FIRE HAZARD!

HOW TO USE THE CLOCK SWITCH

The clock switch is on the lower part of the sauna stove. It can be used both for switching on and as a timer. The warming time desired, 1-4 hours, or a preselected time, 1-8 hours, can be adjusted with the clock switch.
Functional example:
When switching to number 2 on the light area of the scale, the sauna stove is immediatelly connected to function and this function will end in 2 hours.
When switching to number 4 on the black area (the preselection area), the sauna stove is connected to function in 4 hours. The stove will then be switched on for about 4 hours.
The function of the sauna stove can be ended by switching counter-clockwise to position 0.

TEMPERATURE REGULATOR

The temperature regulator is on the lower part of the sauna stove. The temperature desired in the sauna can be selected using the regulator. The broadening line on the scale shows the rising temperature. When switching clockwise, the temperature is rising and, when switching counter-clockwise, the temperature is falling.
The sauna warms up most rapidly by switching the temperature regulator to the max. position.
The size of the sauna, the starting temperature, the thermal insulation, the non-insulated surfaces and how the stones have been piled effect how soon the sauna warms up.

TEMPERATURE RESTRICTOR

If the temperature in the sauna is rising dagerously high the temperature regulator switches off the stove. The temperature regulator can be switched on again by pressing a blunt tool in the hole with a diameter of 3 mm at the end of the electrical box (Figure 8).
If the sauna stove does not start functioning again, check if the clock switch has been switched off and the fuses of the stove on the fuse board have not blown.
If the sauna stove does not warm up after these measures please contact the service department.

AIR EXCHANGE FOR THE STEAM ROOM

The air exchange in the steam room must be as efficient as possible, in order to guarantee sufficient oxygen content and availability of fresh air. The air in the steam room should be changed 3-6 times in an hour.
It is recommended that the ventilation be realised in accordance with the HVAC designer’s plan
The fresh air is directed through a ca. 100-mm diameter duct. The outlet duct should be larger in diameter than the inlet duct. If the ventilation is mechanical, we recommend placing the inlet air valve in the ceiling near the heater.
If the ventilation is natural, we recommend placing the inlet air valve on the side of the heater or under it, either in the wall or in the floor.
It is important to introduce fresh air, so that the air mixes with the air and the steam.
The exiting air should be exhausted from near the floor as far as possible from the incoming air.
The air exhaust valve may be located under the sauna benches.
The exiting air may be directed out of the steam room through the washroom, for instance under the door. There must be an approximately 100-150-wide slit between the door and the floor.
If you provide your sauna with a separate drying valve, place it in the ceiling of the steam room.(This valve shall be closed during the use of the sauna.)

CONSTRUCTION OF THE STEAM ROOM

The steam room must be well insulated, especially the ceiling, through which most of the steam escapes. Because of the humidity, it is recommended the insulation be covered with a moisture resistant material, for instance aluminum foil. The surface (panels) of the sauna rooms interior should always be wooden or made of non-combustible material.
Floor is recommended to be of dark color, because water impurity and stones may stain lighter floor materials.

PROTECTIVE BARRIER

A protective barrier may be built around the heater if necessary. In this case, you should definitely adhere to the minimum clearances from structures made of flammable materials.

IMPORTANT ADDITIONAL INSTRUCTIONS

A suitable temperature for the sauna room is between 60–80 °C.
Staying in the hot sauna for a longer time, makes the body temperature rise, which may be dangerous. Do not sleep in sauna.
You should be careful in the vicinity of the hot heater, because the stones and metal parts of the heater may cause burns.
Only a small amount of water (1-2 dl) should be thrown onto the heater stones, because the steaming water is scalding hot.
This equipment is not to be used by children or people whose physical and psychological traits, mental functions, lack of experience or knowledge may hinder the safe operation of the equipment, if the person who is responsible for safety cannot supervise them or instruct them in the use of the equipment.
Do not go to the sauna if you are under the influence of substances causing intoxication.
Children may not be left unsupervised and they should be supervised to make sure
they do not play with the equipment.
Always inspect the steam room before plugging in the heater.
The improperly filed stone container is a fire hazard.
Covering the stove will cause a fire hazard.
Do not place any objects top over the heater or dry clothes near by the heater.
Door and window must be closed when using the heater.
The stainless steel casing may change its color because of the heat, which is normal behavior for the material. Color changes are not covered by the warranty.
Use normal domestic water for steam water. Do not use sea water (or other salty water) or chlorinated water.
Sea air and a humid climate fastens the corrosion of the heater.

CONNECTION SCHEME:

When measuring the insulation barrier of the heater, some leakage may occur, which is caused by the humidity that has seeped into the insulation material during transport or warehousing. The moisture will evaporate after the heater is heated a few times.
Do not connect the power supply for the electric heater through a fault current protection!
The location of the connectors in the wiring diagram is indicative.

Narvi--NS-Mini-Domestic-Electric-Sauna-Heater-fig-7