Heat Transfer

rosenthal design 
Heating circuit controller Deltatherm<sup>®</sup> HT

Heating circuit controller Deltatherm® HT

The DeltaTherm® HT is a compact and user-friendly solution for simple heating systems and offers weather-compensated control with room infl uence or demand- based room control with 1 room temperature sensor. If a central outdoor sensor unit is used, several controllers can use the outdoor temperature value – this requires the installation of only 1 outdoor temperature sensor. Additionally, there’s a choice of 5 different operating modes and a night correction.

Heating circuit controller for heat interface units
Article no.115 006 03 | Price bracket  A | Price on request
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  • Pre-programmed basic system
  • 4 relay outputs (incl. 1 potential-free extra-low voltage relay)
  • 4 inputs for Pt1000 temperature sensors
  • 5 operating modes, room thermostat and night correction
  • Chimney sweeper function, screed drying function and holiday mode via microbuttons
  • Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via MicroSD card
  • Weather-compensated control with room influence or demand-based room control with 1 room temperature sensor
  • Remote access with a room control unit
  • Function for using a central outdoor sensor unit
Temperature sensor inputs:
Sensor type:
Semiconductor relays:
Potential-free relay:
PWM/0-10 V outputs:
Pre-configured systems:
Mixed heating circuits:
Mixer control weather-compensated:
Mixer control with target temperature:
Operating modes:
Heating circuit antifreeze function:
Heating circuit chimney sweeper function:
Screed drying function:
Room thermostats:
Thermal disinfection:
DHW heating:
Solid fuel boilder:
Heating circuit return preheating:
Return mixing function:
Thermostatic afterheating:
Weather-compensated afterheating:
Night correction:
Boiler protection:
Afterheating suppression:
DHW priority:
Heat exchange:
Parallel relay:
Irradiation switch:
Error relay:
Function block:
Zone loading:
0-10 V boiler control:
Room control:
Remote access with VBus®Touch HC:
Remote display via VBus®Touch FK:
Remote access with RCP12:

Inputs: 4 inputs for Pt1000 temperature sensors (1 of them can be converted to room thermostat (switch)), 1 input for remote control (RTA) or operating mode switch (BAS)
Outputs: 3 semiconductor relays, 1 potential-free extra-low voltage relay, 1 x PWM output, 1 x 0-10 V output
PWM frequency: 512 Hz
PWM voltage: 10,8 V
Switching capacity:
1 (1) A 240 V~ (semiconductor relay)
1 (1) A 30 V= (potential-free relay)
Total switching capacity: 3 A 240 V~
Power supply: 100 – 240 V~ (50 – 60 Hz)
Supply connection: type Y attachment
Standby: 0,63 W
Mode of operation: type 1.B.C.Y action
Rated impulse voltage: 2.5 kV
Data interface: RESOL VBus®, MicroSD card slot
Functions: weather-compensated heating circuit control, room thermostat, chimney sweeper function, screed drying function, holiday mode
Housing: plastic, PC-ABS and PMMA
Mounting: wall mounting, also suitable for mounting into patch panels
Indication/Display: full graphic display, operating control LED (Lightwheel®)
Operation: 4 buttons and 1 Lightwheel®
Ingress protection: IP 20 / DIN EN 60529
Protection class: I
Ambient temperature: 0 … 40 °C
Pollution degree: 2
Dimensions: 110 x 166 x 47 mm
Incl. 3 Pt1000 sensors (2 x FKP23, 1 x FAP13)

Heating circuit controller DeltaTherm® HT – Full kit

Incl. 3 Pt1000 sensors (2 x FKP23, 1 x FAP13)
Article no.: 115 006 13 |  Price bracket A |  Price on request
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RTA12 Remote control

RTA12 Remote control

Remote control for connection to the HKM3 and DeltaSol® MX, BX Plus, DeltaTherm® HC/HC MAX or EM Extension Module

FRP12 Indoor temperature sensor

FRP12 Indoor temperature sensor

Indoor temperature sensor

RCP12 Room control unit

RCP12 Room control unit

Room control unit for connection to the DeltaSol® MX (from version 2.0) or DeltaTherm® HC (from version 1.09) and DeltaTherm® HC MAX



  Product portfolio (PDF)