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Combination boiler accessories are used for safe connection, protection, measurement, control and maintenance of combination boilers. Since a combination boiler is a thermally separated 2-in-1 tank with a buffer section and an indirect boiler section, the fittings must match both the heating circuit and the domestic water side.
At Hewa, you will find accessories such as inlet combinations, magnesium anodes, immersion pockets, electric heating elements and boiler safety groups. When selecting the right accessory, check connection type, pressure rating, material, capacity, thread size, mounting position and compatibility with the combination boiler.
Brands
ALPS EXCLUSIVE AE-13061-CP - Circulation pump DN25 (130 mm, energy-efficient)
Item no. 399999EAN 8721225900310
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
ALPS EXCLUSIVE AE-18061-CP - Circulation pump DN25 (180 mm, energy-efficient)
Item no. 392518EAN 8721225900327
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
ALPS EXCLUSIVE AE-00303-SG - Boiler safety group
Item no. 390303EAN 8721225900037
Price excl. VAT€ 33,02Price incl. VAT€ 39,95
In stock
Added
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
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 512234155 - Automatic air vent with service valve G 1/2" M
Item no. 344155EAN 47241294483721
Price excl. VAT€ 7,40Price incl. VAT€ 8,95
In stock
Added
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)
Item no. 403230EAN 8721082877404
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
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)
Item no. 430415EAN 8721082877602
Price excl. VAT€ 72,30Price incl. VAT€ 87,48
Low stock
Added
OEG 512230010 – Nickel-Plated Filling and Drain Valve G 1/2" M
Item no. 340010EAN 4038222198457
Price excl. VAT€ 8,22Price incl. VAT€ 9,95
In stock
Added
OEG 512200052 - Circulation pump DN20 (130 mm, energy-efficient)
Item no. 342013EAN 4055668004781
Price excl. VAT€ 128,06Price incl. VAT€ 154,95
Op nalevering
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OEG 512200058 - Circulation pump DN25 (180 mm, energy-efficient)
Item no. 342518EAN 8721082877626
Price excl. VAT€ 132,19Price incl. VAT€ 159,95
In stock
Added
OEG 512200060 - Circulation pump DN25 (130 mm, energy-efficient)
Item no. 342513EAN 8721082877619
Price excl. VAT€ 132,19Price incl. VAT€ 159,95
Low stock
Added
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
Afriso 77938 - Boiler safety group for heating systems up to 50 kW
Item no. 067938EAN 4016203779380
Price excl. VAT€ 39,63Price incl. VAT€ 47,95
Low stock
Added
Afriso 77581 - Boiler safety group for heating systems up to 100 kW
Item no. 067581EAN 4016203779381
Price excl. VAT€ 60,00Price incl. VAT€ 72,60
Low stock
Added
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
Selecting combination boiler accessories
Combination boiler accessories are used to connect a 2-in-1 combination boiler correctly, protect it, measure temperature, maintain it or provide electric backup heating. A combination boiler consists of a thermally separated buffer section for heating water and an indirect boiler section for domestic hot water. This means the accessories must technically match the correct side of the installation.
The correct choice depends on the combination boiler type, connection size, pressure rating, material version, power supply, mounting position and technical function. For the domestic water side, inlet combinations and magnesium anodes are important. For measurement and control, immersion pockets can be used, while electric heating elements can serve as backup heating or an additional heat source.
Important when choosing combination boiler accessories
- Check whether the component is intended for the buffer section or boiler section
- Match inlet combinations to the pressure rating and domestic water connection
- Use a suitable magnesium anode for protection and periodic maintenance
- Check connection size, thread, pipe diameter and mounting position
- Select electric heating elements based on capacity, voltage and material
- Use immersion pockets for correct placement of sensors or thermostat probes
- Have electrical components and safety parts installed by a qualified installer
Accessories for protection, maintenance and backup heating
Combination boiler accessories must technically match the tank design, heat source and safety components of the installation. For the basic setup, also review combination boilers. For material selection within the tank itself, steel combination boilers for heat pumps and stainless steel combination boilers for heat pumps are relevant.
An inlet combination is used on the cold water side of the boiler section and must match the pressure rating of the domestic water installation. A magnesium anode contributes to boiler protection and should be periodically checked or replaced according to the instructions. Immersion pockets provide clean sensor placement, while electric heating elements should only be used when capacity, thread, material and electrical connection match the combination boiler.
Frequently asked questions about combination boiler accessories
What are combination boiler accessories used for?
Combination boiler accessories are used for connection, protection, measurement, maintenance and possible electric backup heating of combination boilers with a buffer section and indirect boiler section.
Which components belong to the domestic water side?
The domestic water side includes components such as the inlet combination, magnesium anode and parts for temperature measurement or control. Always check the technical documentation of the combination boiler.
Why is a magnesium anode important?
A magnesium anode helps provide additional protection for the boiler and is important for maintenance and service life. The anode must be checked periodically and replaced if necessary.
What is an immersion pocket used for?
An immersion pocket is used to position a sensor, thermostat probe or measuring element at a suitable measuring point in or near the combination boiler.
Who should install combination 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.