

Trench heaters with fans FH4-M
High thermal power, allowing use as primary heating devices even in low energy efficiency buildings
Extremely low noise level, suitable for rooms with strict acoustic requirements
Efficient operation with low-temperature heat sources, such as heat pumps and condensing boilers
Low thermal inertia allows heat delivery based on actual demand, thus significantly reducing energy consumption and avoiding overheating of rooms.
EC fans – quiet operation and maximum efficiency, ensuring up to 4× greater convection efficiency
Robust stainless steel casings, designed for pedestrian loads and capable of supporting the weight of several adults
Double-sided aesthetic grilles made of aluminum or oak wood
Designed and manufactured in Lithuania
- Description
- Technical specifications
- Dimensions
- Configuration
- Download
- Grilles
- Accessories
- Order codes
FH4-M Trench heaters feature high thermal power in compact dimensions and are designed for reliable operation in spaces with stringent acoustic requirements. Due to their extremely low noise level, these convectors are successfully used in thousands of bedrooms, hotel rooms, and living spaces, ensuring comfort without audible background noise.
The units ensure efficient operation in low-temperature heating systems and are adapted for use with heat pumps and condensing boilers.
The low thermal inertia allows for a quick response to temperature changes, making the FH4-H one of the most economical solutions, allowing for precise maintenance of the set room temperature (up to ±0.5 °C).
Integrated EC fans ensure up to 4 times greater convection efficiency while maintaining a very low acoustic level across the entire operating range and even heat distribution in the room.
The convectors come with robust stainless steel casings, ensuring durability and reliable operation even in high-traffic areas. The design is adapted for pedestrian loads – the convector can be safely walked on and withstands the weight of several adults.
For architectural integration, double-sided aesthetic grilles made of aluminum or oak are used, allowing the solution to be matched with the flooring and interior concept.


ROLL-UP ALUMINUM GRILLES GR



LINEAR ALUMINUM GRILLES GR-L



ROLL-UP WOODEN GRILLES GR

Actuator for Thermostatic Valve A24NC
For opening/closing the thermostatic valve. Controlled by room thermostat TW24

- Operating voltage - 24V DC
- E power - 2.5W
- Protection class - IP54
- Connection thread - M30 x 1.5mm
- Casing material PC/ABS
Thermostatic Valve (Straight) TVS15
For regulating the energy carrier flow. Controlled by actuator A24NC

- Operating temperature -10℃ - 120℃
- Thread 1/2″
- Pressure class - PN10
- Kvs - 2,00
- Body - nickel-plated bronze
Return Flow Limiter (Straight) LS15
For opening, closing, and setting the maximum flow of the energy carrier

- Operating temperature -10℃ - 120℃
- Thread 1/2″
- Pressure class - PN10
- Kvs - 2,00
- Body - nickel-plated bronze
Return Flow Limiter (Angled) LA15
For opening, closing, and setting the maximum flow of the energy carrier

- Operating temperature -10℃ - 120℃
- Thread 1/2″
- Pressure class - PN10
- Kvs - 2,00
- Body - nickel-plated bronze
Control unit CB20
For connecting and powering fans, A24NC actuators, and TW24 room thermostat

- 24V DC power supply
- Power - 20W
- Current - 0.84A
- E connection terminals
- Stainless steel casing
Room Thermostat TW230
For maintaining the set room temperature. Controls actuator A230NC

- Dimensions 88 x 88 x 37,5 mm
- Weekly temperature schedule programming
- Operating temperature 5 - 35°C
- Operating voltage - 230 VAC, current - 3A
- E power - 1.5W
CONVECTOR ORDER CODE
| MODEL | LENGTH, cm | WIDTH, cm | HEIGHT, cm | EXAMPLE |
| FH4-M | 214 | 17.7 | 8.6 | FH4-M 214-17-86 |
GRILLE ORDER CODE
| MODEL | LENGTH, cm | WIDTH, cm | MATERIAL | EXAMPLE |
| GR | 214 | 17 | ALS | GR 214-17-ALS |
| GR-L | 214 | 17 | ALS | GR-L 214-17-ALS |
| GR – roll-up grilles | ALS – aluminum grilles, silver color | |
| GR-L – linear grilles | AL10 – aluminum grilles, brown color | |
| AL50 – aluminum grilles, black color | ||
| OAK – oak grilles | ||
ACCESSORY ORDER CODES
ORDER
| MODEL | CODE |
| Return Flow Limiter (straight) | LS15 |
| Return Flow Limiter (angled) | LA15 |
| Thermostatic radiator valve with pre-setting (Straight) | TVSP15 |
| Room Thermostat | TW24 |
| Electrothermal Actuator 24V | A24NC |
| Control unit | CB20 |
