SKU: 09030106203007

Boiler SunSystem Son 750 with two heat exchangers

Name: Boiler SunSystem Son 750 with two heat exchangers
Brand: SunSystem
SKU: 09030106203007
Availability: InStock

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Boiler SunSystem SON 750 with two heat exchangers — a high-efficiency indirect hot water boiler with a 750-liter capacity, designed for reliable domestic hot water production in residential, commercial, and industrial applications. The boiler is equipped with two serpentine heat exchangers, allowing the use of different external heat sources, such as heating boilers and solar thermal systems.

The boiler features a glass-lined steel inner tank with corrosion protection, providing durability and long service life. The external casing is made with a grey PVC coating (RAL 9006), while the thermal insulation made of soft polyurethane helps reduce heat losses and improve energy efficiency.

Designed for floor-standing vertical installation, SunSystem SON 750 provides efficient hot water storage, stable hot water supply, and flexible integration into various heating and renewable energy systems.

Water heater with two heat exchangers.

Floor water heater with heat exchangers for indirect heating. Heat exchangers allow the tank to use two external sources of renewable energy such as a solar system and a solid fuel boiler.

Product Features:

High insulation efficiency and external PVC coating in RAL 9006 color.

Multi-position temperature sensor installation.

Comprehensive corrosion protection is provided by titanium enamel and anode protection.

All threads are internal.

Two large heat exchanger surfaces.

Ease of installation.

Convenient viewing hole.

Vertical and horizontal modifications are available.

Additional kit for electric heating with rated power 3kW, 4.5kW, 6kW and 7.5kW.

Specification	SON 750
Capacity	750 L
Height / Mounting height	2000 / 2030 mm
Diameter	Ø950 mm
Insulation	100 mm soft PU, removable
Operating pressure / Max. temperature	8 bar / 95°C
Tank test pressure	13 bar
Electric heating element (optional)	2 × (3–7.5) kW
Weight	263 kg
Cold water inlet	Rp1½″ / 300 mm
Hot water outlet	Rp1½″ / 1630 mm
Recirculation	Rp1″ / 1405 mm
Operating pressure / Max. coil temperature S1/S2	16 bar / 110°C
Coil test pressure S1/S2	25 bar
Coil capacity S1/S2	12.95 / 8.63 L
Heat exchange surface S1/S2	2.1 / 1.4 m²
Prolonged power according to DIN 4708, 80/60/45°C, S1	80 kW (1.97 m³/h)
Prolonged power according to DIN 4708, 80/60/45°C, S2	50 kW (1.23 m³/h)
NL – power coefficient at 60°C, S1/S2	32 / 10
Pressure drop Δp, S1/S2	210 / 150 mbar
Inspection opening / Flange O	280 / 450 mm / Ø200 mm
Drain sleeve Y	30 mm / Rp1″
Thermometer T	1630 mm / Rp½″
Anode protector P	1728 mm / Rp1¼″
Sleeve for electric element on water tank body U	1040 mm / Rp1½″
Sleeve for electric element on inspection opening flange Uo	450 mm / Rp1½″
Additional sensor sleeve Z	535 / 1040 mm / Rp½″

heat exchanger

Boiler SunSystem Son 750 with two heat exchangers

Technical information

Specifications