Honeywell DTC 100/2 User Manual Instructions For Installation And Maintenance page 6

Differential thermostat for solar system and combined multi-source heating
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DTC 100/2
DESCRIPTION OF THE FRONT PANEL ELEMENTS
LEGEND :
1 - The switch for manual control (selection of a mode of operation)
2 - Button for adjustment of the temperature of the water in the DHWS
(operates only when the gliding switch (1) is in position AUTO.)
3 - Potentiometer for the adjustment of the switching off temperature difference be
tween the DHWS and the source of heating. (recommended setting is between 5
and 10K)
4 - LED to signal operation
USE OF THE MANUAL CONTROL SWITCH
6
0
No matter what the value of the temperature is, the pump
is off, the valve remains closed.
AUTO
Thermostat operates automatically (normal operation)
1
No matter what the value of the temperature is, the valve
remains open, the pump keeps operating.

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