Thermolec Application &Technical Notes - Manual (Page 63)

ZONE HEATER
Application # 3
Stand alone heating system.
A THERMO-ZONE heater combined with a small ventilation
unit and two grilles or diffusers is all that it takes to create a
small, accurate and low-cost heating system. This new heater
is equipped with a modulating controller which uses the
minimum amount of energy, thus avoiding waste, and a super-
sensitive air flow sensor which permits the heater to operate
only when the fan is running.
This heater is supplied with an electronic wall thermostat to
maximize comfort and energy savings.