The ATI BL22 Marine Water Heater 22L 230V is a compact and highly efficient marine hot water system designed specifically for yachts, sailboats and motorboats. Manufactured in Italy by ATI Mariani Thermo Group, this premium water heater combines dual heating technology with robust marine construction, ensuring reliable hot water production both underway and at anchor.
Featuring an enamelled steel tank, high-performance heat exchanger and electric heating element, the BL22 provides a continuous supply of hot water while maximizing energy efficiency and onboard comfort. The unit is specifically engineered for marine environments and offers long service life even under demanding conditions. Product specifications and technical data are provided by the manufacturer documentation.
Dual Heating System
The ATI BL22 utilizes two independent heating methods:
- Heat exchange from the engine cooling circuit
- Electric heating element powered by 230V shore power
This dual heating concept allows water heating while the vessel is underway or when connected to shore power in the marina. The internal heat exchanger transfers engine heat efficiently through the center of the tank for uniform water heating.
Premium Marine Construction
The BL22 is designed for long-term reliability in marine applications and incorporates premium materials throughout its construction:
- Enamelled steel storage tank
- Enamelled steel heat exchanger
- Pre-painted aluminum external casing
- Closed-cell polyurethane foam insulation
- AISI 304 stainless steel mounting brackets
- Magnesium anode for galvanic corrosion protection
The magnesium anode protects the tank against corrosion and extends service life in harsh marine environments.
Efficient Thermal Insulation
The high-density closed-cell polyurethane insulation minimizes heat loss and improves energy efficiency. According to the manufacturer, heat loss is limited to approximately 1°C per hour over a 24-hour period.
Electric Heating Element
The ATI BL22 230V series is available with three electric heating power options:
| Model |
Power |
Current |
Heating Time* |
| BL2212 |
1250 W |
5.4 A |
37 min |
*Heating from 15°C to 45°C (ΔT = 30°C).
The heating element is manufactured from corrosion-resistant INCOLOY alloy, ensuring durability and long operational life in marine environments.
Adjustable Thermostat & Safety
The integrated thermostat provides both temperature regulation and safety protection:
- Adjustable temperature range: 13°C to 65°C
- Safety cut-off temperature: 83°C
- Manual reset function
- Maximum current: 16 A
These features ensure safe and reliable operation onboard.
Technical Specifications
| Parameter |
Value |
| Capacity |
22 L |
| Capacity (US Gallons) |
5.8 gal |
| Voltage |
230V AC |
| Frequency |
50 Hz |
| Heating Power |
1250 W |
| Maximum Boiler Pressure |
700 kPa |
| Maximum Inlet Pressure |
400 kPa |
| Water Connections |
1/2" |
| Empty Weight |
10.0 kg |
| Gross Weight |
13.0 kg |
| Dimensions (L × W × H) |
413 × 390 × 391 mm |
Technical data are taken from the manufacturer specifications and installation manual.
Standard Package Contents
Each ATI BL22 water heater is supplied with:
- Installation manual
- Warranty certificate
- Mounting brackets and fixing kit
- Pressure relief and non-return valve
Included accessories are specified by the manufacturer.
Applications
The ATI BL22 Marine Water Heater 22L 230V is ideal for:
- Sailing yachts
- Motorboats
- Day cruisers
- Small to medium-sized yachts
- Catamarans
- Commercial vessels
Its compact dimensions make it particularly suitable for installations where space is limited without compromising hot water availability.
Why Buy from Gaelix Marine Service?
Gaelix Marine Service supplies premium marine equipment for recreational and commercial vessels across Europe. We provide expert technical support, worldwide shipping and genuine marine products from trusted manufacturers.
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