Applications
Chimney fans for hot air distribution allow creating fully-featured air heating system based on a fireplace. Such system is the perfect solution for heating of seasonal houses that serve as a second residence during winter time and provides fast and efficient hot air distribution from chimney to other premises. Used for air distribution with the air tempreature range 0°С to +150°С.
Design
The fan casing is made of galvanized steel and equipped with heat- and sound insulation of fire-resistant mineral wool. The casing is perforated for the internal air circulation and motor cooling. The temperature regulator is used for setting the temperature level for the fan switching on and off. Fan startup is effected within the range of 0 °С to +90°С depending on the air temperature generated inside the fireplace heat-exchanger.
Motor
The fans are supplied with single-phase motors for operation in 230/50Hz power supply network. Insulation Class F. The motors have built-in overheating protection with automatic restart. The motor is placed off-airflow and is equipped with forward-curved impeller blades as well as ball bearings for long service life.
-
The fan models marked KAM are equipped with asynchronous motors and extra impeller for air blowing-off and cooling.
Speed control
Both smooth and step fan control is performed by means of the thyristor or autotransformer (Models KAM, KAM Eco). The fan speed is controlled within the range of 0 to 100%.
Mounting
The fireplace fans are designed for connection with round air ducts. The fans can be mounted in any position with respect to the airflow direction indicated with a pointer on the casing. Access for the fan maintenance shall be reserved. Warm air feed ducts shall be laid between the fan and each of the heated rooms. Concealed air ducts system with forced warm air circulation allows saving useful space in the house and fits to the house design.
Accessories
FFK – removable G3 metal filter for boosted air purification. The filter is connected to the fan casing by lock-latches to provide easy removal of the filter for cleaning.
KFK – removable metal mixing chamber with incorporated thermal control damper and G3 filter for boosted air purification. The mixing set is fixed to the fan casing by means of lock-latches to ensure easy removal for cleaning. Fan configuration with KFK mixing chamber provides cool air supply into the mixing chamber when the operating temperature exceeds 90°С. Such configuration also allows hot air withdrawal while the fan motor is not running.
GFK - gravitation backdraft damper to prevent air back draft in the system. Such fan configuration that includes
KFK mixing chamber and GFK backdraft damper ensures fan motor overheating protection based on BY-PASS actuation, in particular when the motor is not running due to no power supply. The fans with such configuration enable backdraft damper shutting and hot air distribution to other premises through ventilation ducts when the motor is not running.
KAM fans operating logic
 |
When air temperature in the fireplace hood reaches the set point, the fan turns automatically on and distributes hot air from the fire hood place to other premises. It turns off, when the temperature falls down below the set point. |
|---|
 |
|---|
Operating logic of KAM fan with FFK filter box
 |
|---|
 |
|---|
|
When air temperature in the fireplace hood reaches the set point, the fan turns automatically on and distributes purified through the FFK filter hot air from the fire hood place to other premises. It turns off, when the temperature falls down below the set point.
|
Operating logic of KAM filter with KFK mixing chamber and integrated heat control damper
 |
When air temperature in the fireplace hood reaches the set point, the fan turns automatically on and distributes purified hot air from the fire hood place to other premises. It turns off, when air temperature falls down below the set point. The fan equipped with a mixing chamber provides cold air supply to the mixing chamber if the transported air temperature exceeds +90°С and hot air removal when the fan is off.
|
|---|
 |
|---|
 |
|---|
Operating logic of KAM filter with KFK mixing chamber and GFK gravity damper
 |
When air temperature in the fireplace hood reaches the set point, the fan turns automatically on and distributes purified hot air from the fire hood place to other premises. It turns off, when the temperature falls down below the set point. The by-pass system is designed to prevent the fan overheating, i.e. during power failure. In this case GFK damper is closed and hot air is moved through the bypas air duct besides the fan. If the air supplied to the fan is too hot, the mixing chamber damper is opened to let cold air supply to the fan. |
|---|
|
|
|---|
Installation and operation of KAM fans with FFK filter in the chimney system.
Installation and operation of KAM fans with KFK damper, KAM fans with KFK andGFK dampers with BY-PASS system in the chimney system.
