Advanced Hydronic Controller - ReSol DeltaSol MX

Advanced Hydronic Controller - ReSol DeltaSol MX


Advanced Hyronic Controller for Full Home Heating  Advanced heating controller for hydronic floor systems, pools, boilers, heat pumps and solar thermal     The RESOL DeltaSol® MX  system controller is the most advanced heati Read More
  • Shipping Weight: 1kgs
  • Manufactured by: RESOL
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Advanced Hyronic Controller for Full Home Heating 

Solar DeltaSol BS/1

Advanced heating controller for hydronic floor systems, pools, boilers, heat pumps and solar thermal



The RESOL DeltaSol® MX  system controller is the most advanced heating controller available with features that will allow over 1,000,000 combinations of configuration.  All on an easy to program LCD screen.  The MX controller is ideal for combining different heating sources including heat pumps and solar thermal.  It can control up to 14 zones and has 19 sensor inputs including variable speed pumps with PWM inputs and Grundfos Direct Sensors.  

The built in SD card can store data or it can be uploaded to the free for customized layout and live web viewing.

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  • 14 relay outputs and 12 inputs for Pt1000, Pt500 or KTY temperature sensors
  • Up to 5 extension modules via RESOL VBus® (45 sensors and 39 relays in total)
  • Inputs for analogue and digital Grundfos Direct Sensors™
  • Integrated control of up to 4 high-efficiency pumps via PWM outputs
  • Data logging, storing, easy transfer of controller adjustments prepared and firmware updates via SD card
  • Cooling over the heating circuit with condensation detection by means of a dew point switch
  • Simplified timer, 0-10 V boiler control and DHW preheating
  • Remote access to the heating circuits with room control unit(s) or the VBus®Touch HC App
  • Extended optional functions, e.g. solid fuel boiler function with mixer and target temperature control




  • Inputs: 12 Pt1000, Pt500 or KTY temperature sensor inputs (can optionally be used for remote controls, operating mode switches or potential-free switches), 3 impulse inputs for V40 flow meters, 1 input for a Flow Rotor, 1 CS10 solar cell, 4 Grundfos Direct Sensors™ (2 x analogue, 2 x digital)
  • Outputs: 14 relays, 13 of them semiconductor relays for pump speed control, 1 potential-free relay and 4 PWM outputs (convertible to 0-10 V signal outputs)
  • PWM frequency: 512 Hz
  • PWM voltage: 10.5 V
  • Switching capacity: 
  • 1 (1) A 240 V~ (semiconductor relay)
  • 4 (1) A 24 V DC/ 240 V~ (potential-free relay)
  • Total switching capacity: 6.3 A 240 V~
  • Power supply: 100 ... 240 V~ (50 ... 60 Hz)
  • Supply connection: type Y attachment
  • Standby: 0,84 W
  • Temperature controls class: IV
  • Energy efficiency contribution: 5 %
  • Mode of operation: type 1.B.C.Y. action
  • Rated impulse voltage: 2.5 kV
  • Data interface: RESOL VBus®
  • VBus® current supply: 35 mA
  • Functions: solar system controller for use in solar and heating systems. 7 integrated calorimeters and control of weather-compensated heating circuits. Adjustable system parameters and add-on options (menu-driven), balance and diagnostics functions, function control according to VDI 2169
  • Housing: plastic, PC-ABS and PMMA
  • Mounting: wall mounting, mounting into patch panels is possible
  • Indication/Display: full graphic display
  • Operation: 7 push buttons at the front
  • Ingress protection: IP 20 / IEC 60529
  • Protection class: I
  • Ambient temperature: 0 ... 40 °C
  • Pollution degree: 2
  • Dimensions: 253 × 200 × 47 mm


We want you to be 100% satisfied with your purchase, if you are not, ship it back to us in the original packaging condition and we will refund your purchase less a 10% restocking fee, provided the equipment is received in good condition. Refund offer valid for 30 days from receipt of product.


We feel that being honest is a much better policy to win your trust rather than trying to lure you with nearly impossible statements such as lifetime warranty. Nothing lasts forever! Our warranty policy is simple; we offer a 3 year warranty on everything we sell and 10 years on our collectors. With this warranty you will get NO hassle next business day replacement (if shipping service and inventory permits). However, as a valued customer you will get technical support through the lifetime ownership of your product. Our Collector do carry longer warranties 10 years from the manufacture. The warranty cover failures that occur during normal operational conditions or manufactures defects. It does not cover failure due to inappropriate operation such as freezing or over heat. Damage caused by vandalism, storms, floods etc. Your household insurance should be modified to cover the system from such situations.

We accept PayPal and Credit card (Visa or MasterCard). If you are ordering multiple units and part, please call us to see if we can save you shipping cost for multiple item orders.


For complete solar kits please allow 2-3 weeks delivery. These kits are shipped via our preferred freight forwarder company and where possible we will schedule residential tailgate delivery (curbside). Heaters and accessories are usually in stock unless indicated otherwise. We do have expedited shipping services available for an additional fee. Please call us if you need a rush order. Once your order has been shipped you will be contacted via email and a tracking number will be provided.

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This product was added to our catalog on Tuesday 11 April, 2017.