Installation Of Thermostat; External Connections - Honeywell DTC 100/4 TD User Manual

DTC 100/4 TD
When pump operates for primary heating circuit (collectors), operation of after-heating
circuit and burner of boiler or electric heating element is prevented. This assures maximum
energy savings during summer seasons and is also the main role of solar systems.
The set comprises four sensors (T1, T2, T3, T4). Two of them are mounted into individual
heating sources and two into upper half of individual exchangers in hot water tank. T1 and
T2 are designed for primary (main) heating circuit, which heats entire quantity of water
in hot water tank (lower exchanger), where T1 is a sensor of heating source (generally
collectors) and T2 is a sensor in lower part of hot water tank. T3 and T4 are designed
for additional, i.e. after-heating circuit which additionally heats water in hot water tank
(upper exchanger). T3 is a sensor of heating source (generally boiler) and T4 is a sensor
in upper part of hot water tank.
TEHNICAL DATA:
Supply voltage ....................................... 230V, 50Hz +/- 10%
Power consumption ............................... 4 VA
Pump relay rating .................................. 3A/230VAC cos 0.6
Type of thermostat ................................. P
Max. measured temperature ................. 180°C
Min. measured temperature .................. -20°C
Adjustable temperature range ............... 10 - 90°C
Temperature difference settings ............ 2 - 15K
Hysteresis of difference ......................... 2°K
Hysteresis of the thermostat .................. 3°K
Nr. of sensors ........................................ 4
Nr. of outputs ......................................... 3 (230 VAC)

INSTALLATION OF THERMOSTAT:

Install the thermostat on hot water tank casing or close to it. Do not mount it under pipe
fittings or valves due to possible water dripping on its housing.

EXTERNAL CONNECTIONS:

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