Description

JOTNAR FAV-250 includes:

– Heat exchanger
– Electric pre-heater
– CO2 sensor
– Humidity sensor
– Wi-Fi
– H10 filter
– Modbus protocol
– Automatic bypass function
– Automatic control based on humidity, CO2 and VOC

Advantages:

Up to 83 % Energy Recovery

3D cross-counterflow enthalpy exchanger transfers both heat and moisture — maximising surface area and energy recovery efficiency in both heating and cooling season. Up to 83 % temperature efficiency across the FAV range.

Enthalpy Exchanger (ERV) – Standard

Polymer enthalpy membrane transfers both heat and moisture in all units — standard, no option required. Up to 78 % enthalpy efficiency (per Ecodesign fiche), no dry air in winter, no condensate drain needed.

Constant Airflow EC Motors

EC motors automatically compensate for duct resistance to maintain preset airflow regardless of filter load or ductwork — 4-speed constant flow control. Up to 40 % energy saving vs. AC motors.

A Energy Class

Verified against official EU Energy Labels and Ecodesign fiche (Regulation 1254/2014): all JOTNAR FAV models — FAV-250, FAV-350, FAV-500 — rate Energy Class A.

100 % Auto Bypass

In summer, the motorised bypass damper opens automatically when outdoor temperature is within a configurable comfort band – supplying fresh air without heat exchange for free-cooling ventilation.

Space-Saving Vertical Wall-Mount

Slim wall-mounted cabinet (350–385 mm wide) installs directly in the served room or an adjacent utility space — no ceiling void or horizontal duct run required. Ideal for renovation and retrofit projects where ceiling-mount units cannot be fitted.

TECHNICAL DATA:

	FAV-250 Advance
AIRFLOW & PRESSURE
Rated airflow, m³/h	250
Max. external static pressure, Pa	130
ENERGY RECOVERY (ERV)
Recovery type	Enthalpy (ERV)
Temperature efficiency, %	83
Enthalpy efficiency (ERV), %	78
ELECTRICAL & ACOUSTICS
Fan motor	EC · 4 speeds · Constant flow control
Power supply	230 V~ / 50 Hz
Max. power input, W	137
Sound power level, dB(A)	37
Energy efficiency class	A
PHYSICAL
Operating temperature range, °C	−25 to +40
Duct connection diameter, mm	144
Unit dimension W×H×D, mm	350×965×480
Net weight, kg	40

Manufacturer information>>

JOTNAR FAV-250 vertical energy recovery ventilation unit