Honeywell DTC 100/4 TD User Manual page 12

DTC 100/4 TD
Water After-heating with Electric Heating Element
When water is after-heated by means of electric heating element, it must be connected
through additional power relay and safety immersion thermostat. T4 sensor should be
installed above electric heating element.
Electric connection
12
power relay
safety
thermostat
DTC
Differential thermostat
DTC 100/4TD
T1, T2, T3, T4
Sensors
T1 - collector sensor
T2 - hot water tank sensor
T3 - boiler sensor
T4 - hot water tank sensor
P1, P2
Circuit pump
P2 - primary circuit pump
P1 - after-heating circuit
pump
EMV1, EMV2
Electric motor actuated
ball valve:
EMV 110..4230 series
EMV 110..3230 series compact
electric heating element