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HKM3 Heating circuit extension module

Manuals available:
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  • Weather-compensated control of a heating circuit with timer
  • Up to 3 HKM3 can be connected to a DeltaSol® E controller
  • Mixer control, antifreeze function, DHW priority function
  • Blocking protection of the heating circuit pump
  • Remote control possible (optional)
rosenthal design

HKM3 Heating circuit extension module
Heating circuit module for a weather-compensated heating circuit
Article-no: 145 440 60 | Price bracket A

HKM3 heating circuit extension module - Full kit
Heating circuit extension module incl. 2sensors Pt1000 (1 x FAP12, 1 x FKP23)
Article-no: 145 440 70 | Price bracket A

The number of VBus® accessories that can be connected to one controller depends on the sum of their current consumption and on the current supply of the controller VBus®.
Device Maximum current consumption
VBus®/PWM interface adapter 6,5 mA
VBus®/USB interface adapter 6,5 mA
VBus®/LAN interface adapter 6,5 mA
Datalogger DL2 1,5 mA
Datalogger DL3 VBus® 1-5: 10 mA
VBus® 6: 0.5 mA
Kommunikationsmodul 1,5 mA
Smart Display SDFK 25 mA
Smart Display SD3 17,5 mA
GA3 Large Display 1 mA
AM1 alarm module 16,5 mA
HKM3 1 mA
STA-W 12 mA
WMZ 35 mA
WMZ G1 35 mA

The VBus®-Repeater amplifies the VBus® signal of a controller and supplies a current of 200 mA in total to modules connected.

The HKM3 heating circuit module enables the control of an additional heating circuit. The controller connected can be extended by a complete weather-compensated heating circuit by connecting the HKM3 via the VBus®. The HKM3 is equipped with 6 sensor inputs, one of which can be used for the optional RTA11-M remote control. For the connection of a mixing valve and a heating circuit pump, 3 semiconductor relays are available, as well as one potential-free relay for backup heating demand. In combination with the controller connected, the HKM3 not only controls the basic functions of the heating circuit and the DHW priority, it also has an antifreeze function and a blocking protection for the heating circuit pump.

Inputs: for 5 Pt1000 temperature sensors and 1 RTA11-M remote control
Outputs: 4 semiconductor relays, 1 potential-free relay
Switching capacity:
1 (1) A 240 V~(semiconductor relay)
4 (1) A 240 V~(potential-free relay)
4 (1) A 24 V DC (potential-free relay)
Total switching capacity: 4 A 240 V~
Power supply: 100 ... 240 V~, 50 ... 60 Hz
Standby: 0,41 W
Housing: plastic, PC-ABS and PMMA
Installation: wall mounting
Indication/Display: LC display, 7-segment display, operating control lamp
Operation: 3 push buttons at the front of the housing and 1 slide switch
Ingress protection: IP 20 / IEC 60529
Ambient temperature: 0 ... 40 °C
Dimensions: 144 x 208 x 43 mm
Control range: -40 °C ... +250 °C
Bus: RESOL VBus®

Product photos

HKM3 (4762 kB)

Please note that RESOL – Elektronische Regelungen GmbH owns the sole copyright on objects, documents, graphics, pictures, audio and video documents, texts, etc. published and created by RESOL – Elektronische Regelungen GmbH. Copying, distribution to third parties, changing the contents or using these contents in electronic or printed publications is not permitted without the explicit approval of RESOL.

The cTUVus certification confirms that the controller is certified to UL 60730-1A and CSA E60730.1.
The cLCus certification confirms that the controller meets the demands of the UL 60730-2-9 and CSA - E60730-2-9-01 standards.
The cLCus certification confirms that the controller meets the demands of the UL 60730-1A and CSA E60730.1 standards.