PLANAR-8DM
ENG
6
5
Heater control unit (CU)
Together with the control panel, the CU is used to control the heater. The CU
performs the following functions:
a) functional diagnostics of heater units prior to startup
b) functional diagnostics of heater units during operation
с) switching the heater on and off by a signal from the control panel
d) control of the combustion process
e) automatic switching ventilation on and off after the end of combustion
f) automatic shutoff of the heater:
-
upon failure of one of the controlled units
-
upon exceeding allowable heat exchanger temperature, heated air temperature, or
supply voltage limits; upon flame blowoff in the combustion chamber (over three
times).
6
Control Panel
The following are located on the front of the panel:
1
ventilation mode on/off button
2
heater on/off button
3
operation LED
4
ventilation mode LED 5 potentiometer handle.
The LED in Pos. 3 indicates the heater status:
-
yellow light—heating mode
-
fast blinking yellow—purging
-
slowly blinking red—malfunction; off—heater is not operational.
The LED in Pos. 4 indicates the ventilation mode status:
-
green light—interior sensor is not connected and heater operates in ventilation mode
-
green blink—ventilation mode off
-
yellow light—the interior sensor is connected and the heater operates in heating
mode with ventilation
-
off—heater is not operational, with ventilation mode off.
Operation of the control panel is described in its OM.
