Temperature Display - Honeywell DTC 100/4 TD User Manual

WARNING!
If T2 and T3 keys are simultaneously pressed, you enter set-up menu. If in about 1 minute
the values are not changed, regulator automatically leaves this menu (it shows T4 tem-
perature in hot water tank). If you have changed the values and you haven't left the set-up
menu, entered values are not effective.

TEMPERATURE DISPLAY:

During normal use display shows "T4" temperature, which is the temperature of water
in upper part of hot water tank. If you press "T1" key, the display shows temperature in
collectors (T1). Temperature remains displayed until the key is pressed.
If you press "T2" key the display shows temperature of lower part of hot water tank (T2).
Temperature remains displayed until the key is pressed.
If you press "T3" key, the display shows temperature in boiler (T3). Temperature remains
displayed until the key is pressed.
WARNING!
Regulator reaction time is 5 sec. max., therefore after each change of temperature you
must wait for 5 sec. to see the change on the display.
Display of Sensor Errors:
Errors of sensors (short circuit, interrupted sensor) are listed on the display. If the sensor
is short circuited the display shows "Er2" and if it is interrupted "Er1". For T4 sensor this is
permanently shown and for other sensors you must press "T1", "T2" or "T3" keys.
If T1 or T2 sensor is faulty, collector heating circuit is inoperative and after-heating circuit
operates normally in automatic mode.
If T3 or T4 sensor is faulty, after-heating circuit is inoperative and collector circuit operates
normally in automatic mode.
USE OF SELECTOR SWITCH FOR MANUAL CONTROL
WARNING!
ON1, ON2 and OFF positions are used only for operation tests of pumps and mainte-
nance disconnection of pump operation when charging and venting the system, but not
during normal operation. OFF position does not enable galvanic separation from mains.
When replacing the pump, disconnect supply voltage!
ON1 Main heating circuit operates continuously.
Max. temperature is no limited.
AUTO Automatic operation of thermostat (normal
operation).
OFF Both pumps are switched off irrespective of
temperature values.
ON2 After-heating circuit continuously operates.
Max. temperatures are not limited.
DTC 100/4 TD
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