Thermolec Application &Technical Notes - Manual (Page 19)

THREE EASY STEPS
STEP 2 - (continued)
Thermolec has developed and patented an innovative solution to eliminate these problems:
The Proportional Electronic Air Flow Sensor.
The Air Flow Sensor responds to the radiant heat of the heating element which, in turn, is influenced by
the air flowing through the heater to dissipate the heat.
The patented sensor and associated electronic controller modulate the power to the heater, adjusting the
heater’s capacity to accurately match the air flow available.
This unique concept allows the heater to respond exactly to the quantity of air flowing through it and
safely shut down in case of a total loss of air flow.
The heater delivers maximum heating when needed with normal minimum air flow, reduced heating with
lower than minimum air flow and stops heating with no air flow.
The electronic controller also allows a proportional control of the heater, and is compatible with the following
input signals:
1- Variable voltage signal 0 -10VDC.
2- Pulse Signal 24VAC or VDC.
Benefits of the Proportional Electronic Air Flow Sensor :
• The heater will operate with extremely low air flow. VAV boxes can then be set to minimum air to
satisfy ventilation requirements rather than increased to accommodate conventional heater velocity
requirements.
• Allows the heater to operate safely regardless of the duct static pressure.
mo-V at the end of this section.
STANDARD CAPACITIES STANDARD DIMENSIONS
up to 2 Kw 120V / 1Ph
up to 5 Kw 208V / 1Ph Round: from 6" to 12" dia.
up to 6 Kw 240V / 1Ph
up to 7 Kw 277V / 1Ph Rectangular: from 6" x 6" to 24" x 18"
up to 8 Kw 347V / 1Ph
Other dimensions, capacities and voltages up to 40 KW and 600V / 3Ph a vailable upon request.