HUUM Cliff Series Electric Sauna Heater User Manual

: June 4, 2024
: HUUM

Table of Contents

Cliff Series Electric Sauna Heater
THINGS TO CHECK BEFORE INSTALLATION
INSTALLATION
Fitting the stones
Guard rails
SAUNA ROOM
WARRANTY
References
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CLIFF
ELECTRIC SAUNA HEATER

HUUM Cliff Series Electric Sauna Heater

Installation and operation manual

Cliff Series Electric Sauna Heater

NB! The following instructions for electrical works must be carried out by a certified electrician.
The product must be installed as a complete set. The HUUM CLIFF electric sauna heater delivery set contains:

electric heater;
installation and operation manual for the electric heater;
2 blocks for disassembling the slats of the sauna stove.

NB! The electric heater requires a control panel and stones.

THINGS TO CHECK BEFORE INSTALLATION

Does the output (kW) match the volume (m³) of the sauna room? See Table 1.
In case there are any uninsulated brick, tile, or glass walls in the sauna room, an additional volume of 1,5 m³ should be added to the sauna room for each such square meter of the wall.
The suitable output of the heater will be determined based on Table 1.
The producer’s warranty guarantee is invalid if the heater and sauna room have been dimensioned incorrectly!
Minimal safe distances between the sauna room’s ceiling and walls in view of installing the electric heater are listed in Table 1.

HUUM Cliff Series Electric Sauna Heater - Fig 1

CLIFF Mini 3,5 is attached to the wall with a special bracket See CLIFF Mini 3,5 heater data in the table below.

Table 1| Output
kW| Room
m3| Weight
kg| A
mm| B
mm| H
mm| Width/DePth
mm| Fuse
A| Power cable
N , mm2
---|---|---|---|---|---|---|---|---|---
CLIFF
Mini 3,5| 3,5| 3,5-6| 15| 60| 390| 975| 270/160| 10| 3 x 2,5
CLIFF 6| 6| 5-10| 16| 60| 390| 975| 270/270| 10| 5 x 2,5
CLIFF 9| 9| 9-15| 16| 120| 510| 975| 270/270| 16| 5 x 2,5
CLIFF 10,5| 10,5| 10-17| 17| 120| 510| 975| 270/270| 16| 5 x 2,5

INSTALLATION

Positioning the heater

The heater must be positioned in such a way that there is a safe distance between flammable materials and the external surfaces of the heater. See Figure.
In installing the heater, it must be prevented people could have physical contact with the heater or that other dangerous situation could emerge during the heating process.
CLIFF Mini holds approximately 60 kg of stones and CLIFF holds approximately 75 kg.
The input of the power cable is located on the bottom cover of the heater.

Connecting the heater to the power supply

Only a certified electrician is allowed to connect the heater to the power supply.
A rubber-insulated SIHF-JB cable or an equivalent cable must be used as the connection cable.
It is recommended to connect the unit to the mains without an earth-leakage circuit breaker.
The maximum current intensity in the cross-sectional area of the cable and circuit breaker is listed in Table 1.

NB! It is forbidden to use a non-heat-resistant cable with PVC isolation as the power cable. The joint box must be waterproof and it must be located up to 50 cm from the floor.

HUUM Cliff Series Electric Sauna Heater - Fig 2

Open the cover of the heater’s electrical box.
Attach the power cable on the terminal block according to the circuit diagram.
Close the cover.
Fix the cable on the output with a cable strap.

Fitting the stones

Upon stacking the stones, one should monitor that the heating elements are not bent and that there is sufficient air circulation around the heater elements.

The stones must be washed clean before laying.
When the stones have been stacked too close to each other, the heating elements may overheat (= shorter useful life) and slow the heating of the sauna.
Stones with a diameter of 3–6 cm are suitable for the heater.
The stones on the external surface of the heater must fully cover the heating elements. The heating elements must not be visible.
Using ceramic stones in the CLIFF heater is allowed upon the user’s responsibility.

ATTENTION! Too sparsely filled stone container causes fire hazard!

Removing the ribs of the heater
For fitting the stones, all of the ribs are removable by props (A).

On the bottom of the heater, release the nuts of the threaded rod by 5 mm.
Push the props between the ribs of the heater.
Release the rib from both ends.
Carefully remove the rib from the joint, first from the right end and then the left.

NB! Pull the rib away from the heater without using force or turning the rib – avoid bending the tenons!

HUUM Cliff Series Electric Sauna Heater - Fig 3

The rib under the removed rib is instantly removable in a similar fashion. The procedure is reversed for putting the ribs back. The rib must be attached to the joint from the left end first and then from the right.
First-time use of the sauna heater
Before switching the heater on, the insulation resistance might prove to be lower than the standard. The reason for that is the moisture seeped into the insulating layer during storage in the warehouse and transportation.
The moisture evaporates in 1–2 hours of heating the electric heater.

Controlling the heater
All certified control panels may be used in controlling the heater. The output of the heater must remain in the interval determined by the control panel’s producer.
You can find the right remote and other accessories from HUUM’s selection of products.

Guard rails

It is recommended to construct a guard rail around the heater. We recommend using materials with low heat capacity and bad thermal conductivity for the guard rail.
Upon using flammable materials, it is necessary to leave the specified minimal safety clearances between the heater and flammable constructions.

NB! Installing the heater closer to flammable constructions than at the distance of the minimal required protection belt may cause a fire hazard.

SAUNA ROOM

Wall materials and insulation in the sauna room
In a sauna with electric heating, all massive heat accumulating wall surfaces (brick, glass brick, rendering, etc.) must be insulated to use the electric heater with regular output.

The following sauna wall and ceiling construction is considered to be sufficiently insulated:

a carefully installed insulation wool layer of 100 mm (min. 50 mm);
the construction is damp-proofed with taped aluminum paper or other reflective material;
there is a 10 mm air gap between the damp protection and boarding;
a light wooden board that is about 12–16 mm thick has been used for interior finishing;
there is an air gap of at least 5 mm on the edge of the ceiling panels at the upper part of the wall paneling.

In order to use the heater with a regular output, it would be practical to bring the ceiling of the sauna lower (min. height of sauna room 2200 mm) so that the volume of the sauna room diminishes. The ceiling is insulated with an insulation layer at least 100 mm thick and boarded according to the method described above.
Wood should be used to cover internal surfaces; an exception may be made for heat-resistant walls in the vicinity of the heater.
ATTENTION! Insulating the heat barrier has to be approved by the fire inspector. Insulating flues in use is forbidden!

NB! Covering the walls or floor with light protective material, for example, mineral tiles that are installed directly on the surface of the walls or ceiling might cause the dangerous overheating of the wall or ceiling material.

The floor of the sauna room
The heater stones in use crumble due to temperature changes. The pieces and pebbles breaking away from the heater stones are washed on the sauna’s floor with the steam-making water. Hot stone parts may damage plastic flooring under and near the heater. Heater stone particles and sprays from the steam-making water (e.g., with iron content) may absorb into the light joints of a tile floor. In order to avoid aesthetic damage (caused by the reasons mentioned above), ceramic tiles and dark joint filler should be used under and around the heater.

Ventilation of the sauna
In order to assure a sufficient oxygen supply and fresh air, the sauna’s ventilation must be as efficient as possible. It is advisable to direct the fresh air into the sauna room from above the heater stones. As an alternative, the fresh air may be directed in from under the heater. The air inlet must be equipped with an adjustable valve. The exhaust valve must be installed in the opposite wall from the heater at least 20 cm above the inlet valve.

WARNING!

Before turning on the electric heater, always check the sauna room and heater.
The heater may be used only when it has been correctly filled with stones.
Do not cover the heater—this causes a fire hazard.
Do not touch a working heater, it causes burns.
Ventilating the sauna room incorrectly may dry the wood too much and cause a fire hazard in the sauna.
Only tap water may be used for making steam.
Never make steam by using a water hose.
There must always be at least 5 cm of fireproof heat insulation under the boarding.
Sauna doors must always open outward.
Do not use the sauna for any other purpose than it is meant to be used.
Do not install more than one heater in the sauna room.
Undiluted sauna essences etc. may ignite when poured directly on the stones.
Do not leave small children in the sauna unattended.
Sudden cooling after staying in the steam room is not recommended for people with poor health. Consult a doctor.
Enjoy the sauna as long as it is comfortable for you.
Keep this information in a secure place.
The product’s warranty guarantee does not extend to heating elements.

WARRANTY

The buyer is obligated to read the user manual and follow the instructions and requirements presented. Damage to the product caused by not following instructions and requirements will void the warranty.
If any defects are found on the product, which is where the manufacturer can be blamed, then the buyer has the right to demand to fix or replace the product. Demands must be made not later than 5 years after buying the product. Purchase receipt needs to be presented when warranty demands are made.

Warranty Terms

Warranty applies only to electric heaters that have been used according to the manual
NB! The warranty does not cover heating elements. They are considered as consumable parts.
The warranty does not cover wear that occurs from natural usage.
The warranty does not cover defects or wear caused by planned use.
Warranty does not imply when:
damage or defects are caused by transportation or other actions not controlled by the manufacturer;
product has been damaged by carelessness or overload;
product has not been installed correctly;
product has been modified in any way;
warranty period is over;
product is not complete.