Yes, in most cases you do need a water filter. To secure your oven, you need to live up to the requirements for water supply and water quality, which are specified in the installation manual.

The water coming in to the oven must have a maximum water hardness of 3 dH and chloride maximum of 100 mg/L.

Use the total hardness test strips as an easy and cheap way to determine the water hardness in intervals. Alternatively, contact your local water supplier to get the correct data concerning the water hardness in your local area.

Use the total hardness drop test to make precise measurements of the water hardness. We highly recommend you measure the precise water hardness to extend the life expectancy of your water filter and use the filter capacity more effectively.

The size of the filter depends on the oven size and overall water consumption.  The larger the oven and water consumption, the larger the filter is needed.

Example:
For a CombiSlim, the smaller filter Hydro Shield 3600 is sufficient.

For a Visual Cooking, where the injection steam is frequently used resulting in higher water consumption, a larger filter is needed Hydro Shield 6000.

Use the table below to identify what Hydro Shield to use fitting your needs:

The Hydro Shield water is a four-step water treatment cartridge:

1) Pre-filtration (particle filter, active carbon)
2) Decarbonisation by means of ion exchangers
3) Active carbon filtration; also filters the bypass water
4) Particle filtration

The Hydro Shiels will remove organic particles using a 50 my self-flushing filter. If there are high amounts of humus in the water, the cartridge will become blocked earlier than wanted. In that case, it will be beneficial for you to fit a dedicated self-flushing filter before the Hydro Shield.

If you have a SmartTouch oven, your oven is equipped with water monitoring software. If the oven is older than December 2015, you need to update your software to version 1.3.0 or higher to get access to the water monitoring software.

If you have an oven with a manual control panel, you must buy an water flow meter – aqua meter to measure your water consumption. Connect the aqua meter and set the capacity as described in the table at the back of the filter manual. Find the filter manual here.

If you have a SmartTouch oven with updated software, the oven gives you a clear alarm on the oven panel when the filter needs replacing. If you have an oven with a manual control panel, monitor the aqua meter and change the filter when the filter is exhausted.

Determine the water hardness by using the total hardness test kit both in strips and drops, both can be purchased at the HOUNÖ web shop.

Enter the water hardness in the water measurement software on the oven panel. Hydro Shield ensures that the water supplied to the oven is within the allowed values for water hardness and chloride.

Please see the oven installation manual for the exact requirements. You can find the relevant manual for water supply here.

Hydro Shield est conçu pour protéger le four contre les dépôts nocifs dans l’eau. Si vous utilisez d’autres filtres à eau, vous risquez de détériorer le four car il ne sera pas entièrement protégé.

Si vous êtes familier avec l’installation des joints et la tension correcte, il est possible d’installer le kit de montage vous-même. Le kit de montage du filtre avec les tuyaux doit être raccordé à l’alimentation en eau pour fonctionner.

Oui, suivez les instructions du manuel du filtre pour remplacer le filtre. Attention, la tête de filtre Hydro Shield coupe l’eau lorsque vous retirez le filtre.

Non, chaque four a besoin de son propre filtre. Si les fours sont superposés, deux filtres à eau distincts sont nécessaires. Si deux fours sont raccordés au même filtre et que les deux fours tirent de l’eau en même temps, le filtre à eau commun limitera le débit d’eau, ce qui réduira la capacité et nécessitera un remplacement plus fréquent des filtres.