Resol DeltaSol CS/4 Manual For The Specialised Craftsman
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Resol DeltaSol CS/4 Manual For The Specialised Craftsman

Solar controller
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Enlarged version
CS/4
DeltaSol
®
Version 1.11
Solar controller
Manual for the
specialised craftsman
Installation
Operation
Functions and options
Troubleshooting
en
Thank you for buying this RESOL product.
Manual
Please read this manual carefully to get the best performance from this unit.
Please keep this manual carefully.
www.resol.com

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Do you have a question about the DeltaSol CS/4 and is the answer not in the manual?

Questions and answers

Robin Gilbert
March 8, 2025

how do you do a factory reset pressing button 3 does nothing?

0
1 comments:
Mr. Anderson
March 8, 2025

The manual describes the factory reset process, but it does not provide an alternative method if button 3 is unresponsive. If button 3 does not work, check for possible issues such as power supply, wiring, or physical button damage. If the issue persists, consult the manufacturer or an authorized service provider for support.

This answer is automatically generated

0
EAMON SMYTH
July 9, 2025

what length cable on temperature sensor cable

0

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Summary of Contents for Resol DeltaSol CS/4

  • Page 1 Solar controller Manual for the specialised craftsman Installation Operation Functions and options Troubleshooting Thank you for buying this RESOL product. Manual Please read this manual carefully to get the best performance from this unit. Please keep this manual carefully. www.resol.com...
  • Page 2 Safety advice Target group Please pay attention to the following safety advice in order to avoid danger and These instructions are exclusively addressed to authorised skilled personnel. damage to people and property. Only qualified electricians are allowed to carry out electrical works. Initial commissioning must be effected by the system installer or qualified personnel Instructions named by the system installer.

  • Page 3: Table Of Contents

    Solar controller DeltaSol CS/4 ® The DeltaSol CS/4 controller is used for speed control of a HE pump in small ® standard solar thermal and heating systems. It is equipped with a PWM output and an additional input for a VFD Grundfos Di- rect Sensor that enables a precise heat quantity measurement.

  • Page 4: Overview

    Energy efficiency contribution: 1 % • Unit °F and °C selectable Mode of operation: type 1.C.Y action Rated impulse voltage: 2.5 kV Upper fastening Data interface: RESOL VBus ® VBus ® current supply: 35 mA Functions: function control, operating hours counter, tube collector function,...

  • Page 5: Installation

    Installation Mounting WARNING! Electric shock! display Upon opening the housing, live parts are exposed! Î Always disconnect the device from power supply before opening the housing! Note Strong electromagnetic fields can impair the function of the controller. Î Make sure the controller as well as the system are not exposed to button cover strong electromagnetic fields.

  • Page 6: Electrical Connection

    Electrical connection The power supply of the device must be 100 … 240 V~ (50 … 60 Hz). Attach flexible WARNING! Electric shock! cables to the housing with the enclosed strain relief and the corresponding screws. Upon opening the housing, live parts are exposed! The controller is equipped with 2 semiconductor relays to which loads such as Î...

  • Page 7: Vfd Grundfos Direct Sensor

    Furthermore, the controller can be connected to a PC or integrated into a net- work via the VBus /USB or VBus /LAN interface adapter (not included). Different ® ® solutions for visualisation and remote parameterisation are availabe on the RESOL website www.resol.com. Note More accessories on page 39.

  • Page 8: Systems

    Systems Arrangement 1: Standard solar system The controller calculates the temperature difference between collector sensor S1 Sensors S3 and S4 can optionally be connected. S3 can optionally be used as the and store sensor S2. If the difference is larger than or identical to the adjusted reference sensor for the store emergency shutdown option (OSEM).
  • Page 9 Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector Temperature store Temperature sensor 3 TSTT Temperature store top Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™...
  • Page 10 Adjustment channels Channel Description Factory setting Page DTCO Switch-on temperature difference cooling 20.0 K [40.0 °Ra] DTCF Switch-off temperature difference cooling 15.0 K [30.0 °Ra] OSTC Store cooling option OHOL Holiday cooling option THOL Holiday cooling temperature 40 °C [110 °F] Collector minimum limitation option Collector minimum temperature 10 °C [50 °F]...
  • Page 11 Arrangement 2: Solar system with backup heating The controller calculates the temperature difference between collector sensor S1 ture (AH O) is reached. This function can optionally be combined with up to three and store sensor S2. If the difference is larger than or identical to the adjusted adjustable time frames.
  • Page 12 Display channels Channel Description Connection terminal Page INIT ODB initialisation active ODB filling time active STAB ODB stabilisation in progress Temperature collector TSTB Temperature store 1 base TSTT Temperature store 1 top TDIS Thermal disinfection temperature (thermal disinfection) Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor...
  • Page 13 Adjustment channels Channel Description Factory setting Page Collector minimum limitation option Collector minimum temperature 10 °C [50 °F] Antifreeze option Antifreeze temperature 4.0 °C [40.0 °F] Tube collector option TCST OTC starting time 07:00 TCEN OTC ending time 19:00 TCRU OTC runtime 30 s TCIN...
  • Page 14 System-specific functions The following adjustments are used for the specific functions in system 3. The chan- nels described are not available in any other systems. Thermostat function Backup Use of surplus heating energy t1 O, t2 O, t3 O Thermostat switch-on time Adjustment range: 00:00 …...
  • Page 15 Thermal disinfection of the upper DHW zone This function helps to contain the spread of Legionella in DHW stores by system- atically activating the backup heating. For thermal disinfection, the temperature at the reference sensor will be moni- tored. Protection is ensured when, during the monitoring period, the disinfection temperature is continuously exceeded for the entire disinfection period.
  • Page 16 Arrangement 3: Standard solar system with heat dump The controller calculates the temperature difference between collector sensor S1 sink. For safety reasons, excess heat dump will only take place as long as the store and store sensor S2. If the difference is larger than or identical to the adjusted temperature is below the non-adjustable shutdown temperature of 95 °C [200 °F].
  • Page 17 Display channels Channel Description Connection terminal Page Temperature collector Temperature store Temperature sensor 3 TSTT Temperature store top Temperature sensor 4 Temperature flow sensor S1 / S4 / VFD Temperature return sensor S4 / VFD Temperature Grundfos Direct Sensor™ Flow rate Grundfos Direct Sensor™ Speed relay R1 h P1 Operating hours R1...
  • Page 18 Adjustment channels Channel Description Factory setting Page TCRU OTC runtime 30 s TCIN OTC standstill interval 30 min Grundfos Direct Sensor™ OHQM Heat quantity measurement option VFD allocation FMAX Maximum flow rate 6.0 l/min MEDT Antifreeze type MED% Antifreeze concentration (only if MEDT = propylene or ethylene glycol) 45 % MAN1 Manual mode R1...

  • Page 19: Operation And Function

    Operation and function System-Monitoring-Display Buttons System-Monitoring-Display forwards (+) Ⓢ (selection / The System-Monitoring-Display consists of 3 blocks: channel display, tool bar and adjustment mode) system screen. backwards (-) Channel display The controller is operated via the 3 push buttons below the display. Button 1 (+) is used for scrolling forwards through the menu and increasing adjustment values.

  • Page 20: Flashing Codes

    System screen Permanently Flashing Status indications: shown The system selected is indicated in the System-Monitoring-Display. It consists of several system component symbols which are – depending on the current status of Relay 1 active ⓵ the system – either flashing, permanently shown or not indicated. ⓶...

  • Page 21: Commissioning

    Commissioning Commissioning forwards (+) 1. Language Î Adjust the desired menu language. Ⓢ (selection / LANG adjustment mode) Language selection Selection: dE, En, Fr, ES, It 2 backwards (-) Factory setting: dE Î Connect the device to the mains The controller runs an initialisation phase. 2.
  • Page 22 Commissioning Commissioning Only confirm the security enquiry if you are 7. Minimum speed sure that you wish to change the system selec- Î Adjust the minimum speed for the corresponding tion. pump. Security enquiry: Î In order to confirm the security enquiry, press Minimum speed button 3.

  • Page 23: Channel Overview

    Commissioning Channel overview Display channels Confirmation Note Completing the commissioning menu The display and adjustment channels as well as the adjustment ranges de- After the last channel of the commissioning menu has pend on the system selected, the functions and options as well as on the been adjusted and confirmed, the controller asks for system components connected to the controller.
  • Page 24 Display of collector temperatures Display of sensors 3, 4 and VFD S3, S4, VFD Collector temperature Sensor temperatures Display range: -40 … +260 °C [-40 … +500 °F] Display range: -40 … +260 °C [-40 … +500 °F] VFD: 0 … 100 % Indicates the collector temperatures.
  • Page 25 Display of flow rate Ⓢ starts flashing and the heat quantity value will be set back to zero. Î In order to finish the reset process, press button 3. In order to interrupt the reset process, do not press any button for about 5 s. The display returns to the display mode.

  • Page 26: Adjustment Channels

    Adjustment channels System selection TIME Indicates the current clock time. Î In order to adjust the hours, press button 3 for approx. 2 s. System selection. Î Set the hours by pressing buttons 1 and 2. Adjustment range: 1 … 3 Î...
  • Page 27 ∆T control Speed control DT O DT S Switch-on temperature difference Set temperature difference Rise Adjustment range: 1.0 … 20.0 K [2.0 … 40.0 °Ra] Adjustment range: Adjustment range: Factory setting: 6.0 K [12.0 °Ra] 1.5 … 30.0 K [3.0 … 60.0 °Ra] 1 …...
  • Page 28 Maximum speed Pump control type Adjustment range: (10) 30 … 100 % Selection: OnOF, PULS, PSOL, PHEA Factory setting: 100 % Factory setting: PSOL In the adjustment channel nMX, a relative maximum speed for a pump connected With this parameter, the pump control type can be adjusted. The following types can be allocated to the output R1.
  • Page 29 Store emergency shutdown Cooling functions In the following the 3 cooling functions – collector cooling, system cooling and store cooling – are described in detail. The following note is valid for all three cooling functions: Note OSEM The cooling functions will not become active as long as solar loading is Store emergency shutdown option possible.
  • Page 30 Store cooling Note This function will only be available if the system cooling function (OSYC) is deactivated. Note In system 3, the parameter CMX is available without the OCC function. OSTC OHOL In system 3, CMX is used for setting the activation temperature for the Store cooling option Holiday cooling option heat dump function.
  • Page 31 Collector minimum limitation Note Since this function uses the limited heat quantity of the store, the anti- freeze function should only be used in regions with few days of tempera- tures around the freezing point. The antifreeze function will be suppressed if the store temperature falls below +5 °C [+40 °F] in order to protect the store from frost damage.
  • Page 32 If OHQM is activated, the heat quantity gained can be calculated and displayed. The heat quantity measurement can be carried out in 2 different ways (see below): with a fixed flow rate value or with a VFD Grundfos Direct Sensor™. Heat quantity measurement with fixed flow rate value TCIN The heat quantity balancing (estimation) uses the difference between the flow and...
  • Page 33 Drainback option Note A drainback system requires additional components such as a holding tank. The drainback option should only be activated if all components required are properly installed. Digital flow rate sensor (only if SEN = 12, 40 or 40F) Note Selection: OFF, 1, 2 The drainback option is only available in systems 1 and 2.
  • Page 34 Time period – switch-on condition Booster function OBST option tDTO Booster function Time period – switch-on condition Adjustment range: ON / OFF Adjustment range: 1 … 100 s Factory setting: OFF Factory setting: 60 s This function is used for switching on a second pump when filling the solar system. The parameter tDTO is used for adjusting the time period during which the When solar loading starts, R2 is energised in parallel to R1.
  • Page 35 Language Reset RESE LANG Reset function Language selection By means of the reset function, all adjustments can be set back to their factory Selection: dE, En, Fr, ES, It settings. Factory setting: dE Î In order to carry out a reset, press button 3 In this adjustment channel the menu language can be selected.

  • Page 36: Troubleshooting

    Troubleshooting If a malfunction occurs, the display symbols will indicate an error code: The symbol☍ is indicated on the display and the symbol ⚠ is flashing. The display is permanently off. Sensor fault. An error code instead of a temperature is shown on If the display is off, check the power supply of the controller.
  • Page 37 (warmest collector output); use immersion sleeve of the respective Clean it Plausibility control of the option collector. tube collector special function Heat exchanger too small? Replace with correctly sized one. Note: For answers to frequently asked questions (FAQ) see www.resol.com.
  • Page 38 Store cool down at night Check the non-return valve in warm Further pumps which are connect- Collector circuit pump runs during water circulation - o.k. ed to the solar store must also be the night? checked. Check controller Clean or replace it. The gravitation circulation in the Collector temperature at night is Check the non-return valves in the...

  • Page 39: Accessories

    Accessories Sensors SD3 Smart Display / GA3 Large Display SP10 Overvoltage protection AM1 Alarm Module device VFD Grundfos Direct Sensor ™ DL2 Datalogger VBus ® / USB & VBus ® / LAN DL3 Datalogger interface adapters...

  • Page 40: Sensors And Measuring Instruments

    Sensors and measuring instruments Temperature sensors DL2 Datalogger The product range includes high-precision platinum temperature sensors, flatscrew This additional module enables the acquisition and storage of large amounts of data sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip- (such as measuring and balance values of the solar system) over a long period of on sensors, also as complete sensors with immersion sleeve.

  • Page 41: Index

    Index Accessories........................39, 40 Language ..........................35 Antifreeze function ......................31 Minimum collector temperature ................... 31 Backup heating ........................14 Monitoring-Display ......................19 Booster function ....................... 34 Mounting ..........................5 Collector cooling ......................29 Operating mode ........................ 34 Collector emergency shutdown ..................29 Commissioning ........................
  • Page 44 - they only represent use outside the copyright requires the approval of RESOL – Elektronische some examples. They can only be used at your own risk. No liability is assumed for Regelungen GmbH.

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