Indirect water heater accessories

Indirect boiler accessories are used for safe connection, protection, measurement, control and maintenance of domestic hot water boilers. This includes 6 bar inlet combinations, magnesium anodes, immersion pockets and electric heating elements.

At Hewa, you will find accessories for indirect boilers used with heat pumps, heating systems and solar thermal installations. For the cold water connection of indirect boilers, a 6 bar inlet combination is generally recommended. A suitable magnesium anode is also important for protection, maintenance and service life.

Brands

Pentec Duco - Inlet combination valve 15 x 15 mm (6 BAR)
Pentec Duco - Inlet combination valve 15 x 15 mm (6 BAR) Item no. 428399EAN 8717065000570
Price excl. VAT€ 18,97Price incl. VAT€ 22,95 In stock
Added
OEG 512245033 - Solar station with solar circulation pump PWM
OEG 512245033 - Solar station with solar circulation pump PWM Item no. 345033EAN 4023854910293
Price excl. VAT€ 363,60Price incl. VAT€ 439,95 In stock
Added
Pentec Duco Mix 15C - Mixing valve 15 mm compression
Pentec Duco Mix 15C - Mixing valve 15 mm compression Item no. 429001EAN 8717065023432
Price excl. VAT€ 33,02Price incl. VAT€ 39,95 In stock
Added
HydroMix Mixing Valve - Domestic Hot Water +35 to +65 °C (15 mm)
HydroMix Mixing Valve - Domestic Hot Water +35 to +65 °C (15 mm) Item no. 430415EAN 8721082877602
Price excl. VAT€ 72,30Price incl. VAT€ 87,48 Low stock
Added
Bonfix 52805 - Inlet combination valve (8 BAR) 15 mm compression
Bonfix 52805 - Inlet combination valve (8 BAR) 15 mm compression Item no. 119482EAN 8717845528058
Price excl. VAT€ 20,00Price incl. VAT€ 24,20 In stock
Added
MB 3000 OWR1/230V AISI - Stainless steel electric heating element (3 kW)
MB 3000 OWR1/230V AISI - Stainless steel electric heating element (3 kW) Item no. 403231EAN 5905481955151
Price excl. VAT€ 123,93Price incl. VAT€ 149,95 In stock
Added
MB 3000 OWR1/230V - Electric heating element (3 kW)
MB 3000 OWR1/230V - Electric heating element (3 kW) Item no. 403230EAN 8721082877404
Price excl. VAT€ 115,66Price incl. VAT€ 139,95 In stock
Added
ENS 1248495 - Magnesium Anode for Water Heaters (G 1/2
ENS 1248495 - Magnesium Anode for Water Heaters (G 1/2" M) Item no. 878495EAN 5022050013444
Price excl. VAT€ 11,98Price incl. VAT€ 14,49 In stock
Added
OEG 211205050 - Brass Thermowell TH/TC 150 (G 1/2
OEG 211205050 - Brass Thermowell TH/TC 150 (G 1/2" M) Item no. 345050EAN 4038222198452
Price excl. VAT€ 9,88Price incl. VAT€ 11,95 In stock
Added
OEG KSW - Differential controller with 4 TF/PT sensors
OEG KSW - Differential controller with 4 TF/PT sensors Item no. 340085EAN 8721225900716
Price excl. VAT€ 206,61Price incl. VAT€ 250,00 Op nalevering
Added

Selecting indirect boiler accessories

Indirect boiler accessories are used to connect a domestic hot water boiler correctly, protect it, measure temperature, maintain it or provide electric backup heating. This product group includes inlet combinations, magnesium anodes, immersion pockets and electric heating elements. These components are important for a safe and service-friendly domestic hot water installation.

The correct choice depends on the boiler type, connection size, pressure rating, material version, capacity, mounting position and the technical requirements of the heat source. For the cold water connection of indirect boilers, a 6 bar inlet combination is generally recommended. A magnesium anode is also important for additional protection, periodic maintenance and longer boiler service life.

Important when choosing boiler accessories

  • Preferably use a 6 bar inlet combination for the cold water connection
  • Check connection type, thread size, pipe diameter and mounting position
  • Select a suitable magnesium anode for protection and maintenance
  • Use immersion pockets for correct placement of sensors or thermostat probes
  • Select electric heating elements based on capacity, voltage and material
  • Check compatibility with steel or stainless steel indirect boilers
  • Have electrical components and safety parts installed by a qualified installer

Accessories for protection, maintenance and backup heating

Boiler accessories must technically match the boiler and the rest of the installation. For the basic setup, also review indirect boilers. For steel boilers, proper anode inspection is especially important; also see steel indirect boilers. For installations with stainless steel boiler storage, stainless steel indirect boiler is relevant.

An inlet combination protects the cold water side of the boiler and must be matched to the system pressure rating. A magnesium anode helps protect the boiler and should be periodically checked or replaced according to the instructions. Immersion pockets provide clean sensor placement, while electric heating elements can be used as backup heating or an additional heat source.

Frequently asked questions about indirect boiler accessories

What are indirect boiler accessories used for?

Indirect boiler accessories are used for connection, protection, measurement, maintenance and possible electric backup heating of domestic hot water boilers heated via an external heat source.

Why is a 6 bar inlet combination recommended?

A 6 bar inlet combination is recommended for the cold water connection of indirect boilers. This component supports pressure protection and must match the technical requirements of the domestic hot water installation.

Why is a magnesium anode important?

A magnesium anode helps provide additional boiler protection and is important for maintenance and service life. Check the anode periodically and replace it when required according to the technical documentation.

What is an immersion pocket used for?

An immersion pocket is used to position a sensor, thermostat probe or measuring element in or near the boiler at a suitable measuring point, without leaving the measuring element directly unprotected in the water.

Who should install boiler accessories?

Safety components, electric heating elements and technical fittings must be installed correctly and safely. This should preferably be carried out by a qualified installer.

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