Specification and Operating Instructions
Contents
1. ETDT14271_110413 Description KLT13ST KLT23ST and KLT33ST controls are designed for most thermal solar energy applications with inlets for PTC type temperature probes and a 3 digit temperature display They have a solar collector probe sd1 water storage tank top probe sd2 and water storage tank bottom probe selectable sd3 Allows control of the solar collector pump out1 auxiliary heating out2 and surplus energy use function out3 Users may program 21 different parameters including maximum water storage tank temperature and solar collector temperature deltas The control includes error warning and protection password The choices are red green or blue display temperature in C or F and 230Vac 115Vac 24Vac dc or 12Vac dc power supply Model references The model reference is given by KLTX3ST PVYZ Where each sufix can take the following values V Display Color R Red G Green B Blue Y Supply Voltage 230 230Vac 115 115Vac 24 24Vac dc 12 12Vac dc Z Units C C F F Installation The thermostat must be located in a place protected from vibrations impacts water and corrosive gases It will be made a 71x29mm panel cut out to insert the thermostat apply silicone to make it leaktight Then the fixing clips must be fasten sliding it onto the thermostat until itis well secure Wiring Avoid installing the cables of the probes and the digital input in the proximity of any power cable Maintenance2. cleaning and repair After final installation of the unit no routine maintenance is required Clean the surface of the display controller with a soft and damp cloth Never use abrasive detergents petrol alcohol or solvents All repairs must be made by authorised personnel KLTX3ST Solar Thermal Energy Digital Controller Specification and Operating Instructions Wiring Diagram KLT33ST KLT23ST x z a Sd1 Sd2 Sd3 1 2 3 4 5 6 1718 9 f0 LA Lb anes SLINK Sd1 Sd2 Sd3 1 2 3 4 5 6171 8 9 10111 NI N suppiry OuttOut2 Out N N KLT13ST 5 e7 19 Ho Out1 SUPPLY x A A Sd1 Sd2 314 Tat Technical Data Supply voltages 115Vact10 230Vact 10 24Vac dc 10 12Vac dc 10 Supply powers AVA 230V 115V 1 5VA 24V 12V Storage temperature 20 C to 80 C 4 to 176 F Operating temperature 0 C to 70 C 32 to 158 F Probe range PTC 50 C to 150 C 58 to 302 F Accuracy Better than 1 of full scale Resolution 1 3 digits Display 3 digit and sign Probes PTC1000 probes 25 C 1000 Ohm sd1 solar collector probe Sd2 water storage tank bottom probe Sd3 water storage tank top probe selectable by parameter Outputs Out1 solar collector circulation pump SPST Relay Resistive load 5A 240Vac Out2 auxiliary heating KLT23ST PX and KLT33ST PX SPST Relay Resistive load 16A 240Vac 1HP 240Vac 10FLA 6OLRA 240Vac Out3 surplus energy use
3. Yes No From the following example dto 6 C dtF 4 C tSt 60 C tcL Minimum collector temperature C 10 to 90 10 The circulation pump is on when sd2 has not reached the tSt parameter oF 14 to 194 50 and there is also a temperature differential between sd1 and sd2 higher ocF Anti freeze option in collector Option No Yes No than the dto on delta parameter When for example sd2 50 C the tcF Anti freeze temperature in collector L 10 to 10 4 circulation pump is on when sd1 gt 50 6 56 C When sd2 is above a f Fo 14 to 50 39 60 C tSt the circulation pump is not powered on na ice heating option Option NOYES No uxiliary heating temperature Cc 0 to 95 45 Once started the circulation pump will be powered off when the oF 32 to 203 113 temperature differential between sd1 and sd2 is below the dtF off delta odl Surplus energy use option Option No Yes No parameter For example keeping sd2 50 C the circulation pump is tdl Surplus energy use temperature C 0 to 95 70 powered off when Sd1 drops from 50 4 54 C The circulation pump oF 32 to 203 158 will also be powered off when sd2 exceeds the 60 C tSt parameter in this Pb3 Sd3 option top probe Option No Yes No example Usd Probe to display Numeric 1 to 3 1 Hn1 Manual automatic circulation pump Option On OFF Aut Aut cae i Hn2 Manual automatic auxiliary heating Option On OFF Aut Aut Auxiliary heating operation Hn3 Manual automatic surplus energy use Option On OFF Aut Aut The
4. auxiliary heating function is implemented in KLT23ST PX and KLT33ST HO Factory Settings Numeric 0 to 2 0 PX and NOT in KLT13ST PX H5 Access code to parameters Numeric 0 to 255 0 The auxiliary heating demand from a boiler electric resistance etc is used to heat up the water storage tank when solar radiation has been insufficient Parameter description and the water storage tank is at a low temperature tSt Maximum water storage tank temperature Maximum temperature The oEA parameter must be configured to Yes after which it is possible to desired for the part below sd2 the water storage tank program the water storage tank temperature tEA parameter below which When sd2 gt tst circulation pump off the thermostat will trigger the auxiliary heating When sd2 lt tst 1 K circulation pump on or off depending on sd1 When the thermostat has sd3 Pb3 Yes it uses this sd3 to set the auxiliary Note The control is fitted with sd2 safety at 95 C so that the circulation heating When no sd3 Pb3 No is available the thermostat uses sd2 to set pump is never powered on when sd2 gt 95 C the auxiliary heating dto on temperature delta Degrees at which sd1 must be above sd2 to For example oEA Yes tEA 45 C Pb3 Yes power on the circulation pump When sd3 lt 45 C the auxiliary heating is on and the external power supply dtF off temperature delta Degrees at which sd1 must be above sd2 to system will increase the temperature o
5. protection supersedes the minimum collector temperature limitation oEA Auxiliary heating option In KLT23ST PX and KLT33ST PX No No auxiliary heating required tEAis not accessed Yes Auxiliary heating required according to temperature tEA tEA Auxiliary heating temperature sd3 is used when parameter Pb3 Yes or sd2 when Pb3 No as water storage tank probe When the water storage tank probe sd3 o sd2 lt tEA auxiliary heating is required When the water storage tank probe sd3 o sd2 gt tEA 1 K auxiliary heating is required odl Surplus energy use option In KLT33ST PX No No water storage tank power dissipated tdl is not accessed Yes Water storage tank power dissipated at temperature tdl tdl Surplus energy use temperature sd3 is used when parameter Pb3 Yes or sd2 when Pb3 No as water storage tank probe When the water storage tank probe sd3 o sd2 gt tdl the surplus power in the water storage tank is dissipated to an external system When the water storage tank probe sd3 o sd2 lt tdl 1 K the surplus energy use function is powered off Pb3 Sd3 option top probe Indication to the thermostat whether there is a top probe sd3 Yes or there is lack of it No The sd3 is used for auxiliary heating and surplus energy use When no sd3 is available Pb3 No the thermostat uses sd2 for these functions uSd Probe to view Selection of the probe to view 1 sd1 solar collector 2 sd2 water storage tank bot
6. KLT33ST PX SPST Relay Resistive load 8A 240Vac Dimensions Front 77 x 36 mm Depth 62 mm 3 03 x 1 42 x 2 44 inch Front Protection IP64 ETDT14271_110413 Parameter programming Maximum water storage tank temperature tSt is the only parameter the user can access without code protection Press SET tSt text will appear on the display Press SET again The real value is shown on the display The value can be modified with the UP and DOWN arrows Press SET to enter any new values Press SET and DOWN at the same time to quit programming or wait one minute and the display will automatically exit programming mode Access to all code protected parameters Press SET for 8 seconds The access code value 0 is shown on the display unit comes with code set at 0 from factory e With the UP and DOWN arrows code can be set to user needs Press SET to enter the code If code correct the first parameter label is shown on the display tSt Move to the desired parameter with the UP and DOWN keys Press SET to view the value on the display The value can be modified with the UP and DOWN keys Press SET to enter the value and exit Repeat until all necessary parameters are modified Press SET and DOWN at the same time to quit programming or wait one minute and the display will automatically exit programming mode The keyboard code can be reset to ZERO by turning off the controller and turning it on again while keep
7. ameter By clicking on SET UP at the same time we switch from main probe view to a view of the probes NOT chosen by the vSd parameter The viewed probe then switches its value from the SD1 SD2 or SD3 message indicating the corresponding probe SLINK In this input we can connect a programming key to read or to write the parameters If we manage the system with a PC we can connect it to the thermostat through this input with a communication module Operation in Error Case All relays are off when there is memory error Err Description Units Range Factory Solar collector probe sd1 error Powers off the solar circuit s circulation tSt Maximum water storage tank temperature i a es ae pump Does not affect all other relays Water storage tank bottom probe sd2 error Powers off the solar circuit s dto Omiemperaire deta Aa x a ae circulation pump When not using sd3 top probe it powers off the dtF Off temperature delta C 10todto 1 4 0 auxiliary heating and the surplus energy use function oF 18todto 1 72 Water storage tank top probe sd3 error Does not affect the solar circuits tHe Collector temperature limit C 60 to 150 140 circulation pump Powers off the auxiliary heating and the surplus energy oF 140 to 302 284 use function oSc System cooling option Option No Yes No tSc System cooling temperature C 60 to 150 120 F 140 to 302 248 Differential thermostat operation ocL Minimum collector temperature option Option No
8. f the water storage tank When sd3 gt power off the circulation pump 45 C 1 K 46 C the auxiliary heating is powered off tHc Maximum collector temperature limit When sd1 exceeds the tHc parameter the circulation pump is powered off to prevent the high Surplus energy use operation temperature from damaging the facility s components The surplus energy use function is implemented in KLT33ST PX and NOT in When sd1 gt tHc circulation pump off Coh message KLT13ST PX or KLT23ST PX When sd1 lt tHc 5 K Return to normal operation For the thermostat to order the transfer of the surplus energy from the water 0S System cooling option storage tank to an external system it is necessary to configure the od No No system cooling is applied tSc is not accessed parameter to Yes Once odl Yes it is possible to set the water storage tank Yes System cooling applied according to temperature tSc temperature tdl parameter above that at which the thermostat triggers the tSc System cooling temperature surplus energy use function Solar collector cooling When sd2 gt tSt and tSc lt sd1 lt 95 C the circulation When the thermostat has sd3 Pb3 Yes it uses it to set the surplus energy PUMP is powered on to cool the collector and power the water storage tank use function When lacking it Pb3 No the thermostat uses sd2 to set the The circulation pump is powered off when sd1 lt tSc 1 K surplus energy use function e g odl Ye
9. ing the SET pressed To record a standard configuration Access to parameter HO as explained in Parameter programming Choose desired configuration For series KLT13ST Px HO 0 For series KLT23ST Px HO 1 For series KLT33ST Px HO 2 Press SET for 8 seconds and the thermostat will be reset Press SET DOWN to quit or wait for 1 minute keyboard timeout Led Indications Indicates circulation pump on Out1 Indicates auxiliary heating demand on Out2 Indicates water storage tank surplus energy use on Out3 AMAM 90 on 10 off flicker if forced to on 10 on 90 off flicker if forced to off Hn1 Hn2 Hn3 parameters Indicates that the sd2 water storage tank temperature has reached the tSt maximum temperature set 90 on 10 off flicker indicates solar collector cooling 10 on 90 off flicker indicates water storage tank cooling Indicates active anti freeze 10 on 90 off flicker indicates active limitation due to low solar collector temperature Display Messages In normal operation the probe temperature selected by vSd will be displayed In error case the following messages can also appear Err Memory reading error EP1 Probe 1 error when vSd other than 1 EP2 Probe 2 error when vSd other than 2 EP3 Probe 3 error when vSd other than 3 CoH Active maximum collector temperature limitation 000 Open probe the selected by vSd parameter Short circuited probe the selected by vSd par
10. s tdl 70 C Pb3 Yes Water storage tank cooling When sd2 gt tSt and sd1 lt sd2 5 K the circulation When sd3 gt 70 C the surplus energy use function is triggered and the Pump is powered on to cool the water storage tank The circulation pump is external surplus energy use system lowers the temperature of the water Powered off when sd1 gt sd2 5 K 1 K storage tank When sd3 lt 70 C 1 K 69 C the surplus energy use OCL Minimum collector temperature option function is powered off No No limitation applied due to minimum collector temperature The tcL parameter is not accessed Yes Limitation applied due to minimum collector temperature according to the temperature set in the tcL parameter tcL Minimum collector temperature When sd1 lt teL the circulation pump is not powered on due to temperature delta limitation due to active low collector temperature thus preventing unnecessary operations The low collector temperature limitation is powered off with sd1 gt tcL 1 K ocF Anti freeze option No No anti freeze protection applied on the collector tcF is not accessed Yes Anti freeze protection applied on collector at temperature tcF tcF Anti freeze temperature on collector The anti freeze situation is powered on when sd1 lt tcF by powering on the circulation pump and heating up the solar collector The anti freeze option is powered off when sd1 gt tcF 1 K by powering off the circulation pump Anti freeze
11. tom probe 3 sd3 water storage tank top probe only possible when Pb3 Yes Hn1 Manual automatic circulation pump Forcing of the circulation pump status On circulation pump always on OFF circulation pump always off Aut circulation pump according to the thermostat setting Hn2 Manual automatic auxiliary heating Forcing of the auxiliary heating status In KLT23ST PX and KLT33ST PX On Auxiliary heating always on OFF auxiliary heating always off Aut auxiliary heating according to the thermostat setting Hn3 Manual automatic surplus energy use Forcing of the surplus energy use status In KLT33ST PX On surplus energy use always on OFF surplus energy use always off Aut surplus energy use according to thermostat setting HO Configuration See corresponding paragraph H5 Access code See Access to protected parameters
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