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OPERATION AND INSTALLATION

SOLAR CONTROLLER

 

» SOM 7 PLUS

!

ATTENTION:  INSTALLING THE CONTROLLER WITH THE 
DEFAULT SETTINGS IS NOT RECOMMENDED.  IN 
ORDER TO PREVENT OVERHEATING OF THE SYSTEM 
HEAT EXCHANGER FLUID OR DOMESTIC HOT WATER 
THE SETTINGS “OCC” AND “OSTC” SHOULD BE SET 
TO “ON” AND THE SETTING “EM” SHOULD BE RAISED 
TO 290 °F.

Summary of Contents for SOM 7 PLUS

Page 1: ...ENTION INSTALLING THE CONTROLLER WITH THE DEFAULT SETTINGS IS NOT RECOMMENDED IN ORDER TO PREVENT OVERHEATING OF THE SYSTEM HEAT EXCHANGER FLUID OR DOMESTIC HOT WATER THE SETTINGS OCC AND OSTC SHOULD...

Page 2: ...hange Errors excepted Please pay attention to the following safety advice in order to avoid danger and damage to people and property Instructions Attention should be paid to valid national and local s...

Page 3: ...using plastic PC ABS and PMMA Protection type IP 20 EN 60529 Ambient temp 32 104 F 0 40 C Size 6 8 4 3 1 9 172 110 46 mm Mounting wall mounting mounting into patch panels is possible Display System sc...

Page 4: ...nd insert the lower wall plug Fasten the housing to the wall with lower fastening screw and tighten Complete wiring connections in accordance with terminal allocations see chap 1 2 Electrical connecti...

Page 5: ...ed with two semiconductor relays to which loads such as pumps valves etc can be connected Relay 1 18 conductor R1 17 neutral conductor N 13 ground conductor Relay 2 16 conductor R2 15 neutral conducto...

Page 6: ...STAB x ODB stabilization in progress 37 COL x Temperature collector S1 37 TST x Temperature tank S2 37 S3 x Temperature sensor 3 S3 37 S4 x Temperature sensor 4 S4 37 TR x Temperature return sensor S4...

Page 7: ...DTCF x Cooling switch off temperature difference 30 0 Ra 15 0 K 41 OSTC x Option tank cooling OFF 42 OHOL x Option holiday cooling OFF 42 THOL x Holiday cooling temperature 110 F 40 C 42 OCN x Option...

Page 8: ...tialization active 37 FLL x ODB filling time active 37 STAB x ODB stabilization in progress 37 COL x Temperature collector S1 37 TST1 x Temperature tank 1 bottom S2 37 TSTT x Temperature tank 1 at the...

Page 9: ...e OFF 42 CFR x Antifreeze temperature 40 0 F 4 0 C 42 O TC x Option tube collector OFF 44 TCST x OTC starting time 07 00 44 TCEN x OTC ending time 19 00 44 TCRU x OTC runtime 30 s 44 TCIN x OTC stands...

Page 10: ...Adjustment range 2 40 Ra 1 20 K in steps of 2 Ra 1 K Factory setting 4 Ra 2 K Pump speed control A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN n2MN Pu...

Page 11: ...ion uses sensor 4 as reference sensor The maximum temperature limitation function provides a maximum tem perature setting usually to reduce scald risk in a storage tank If MX3O is exceeded relay 2 is...

Page 12: ...tank 1 bottom S2 37 TSTT x Temperature tank 1 at the top S3 37 TDIS s Thermal disinfection temperature S3 37 S4 x Temperature sensor 4 S4 37 TR x Temperature return sensor S4 37 n1 x Pump speed R1 R1...

Page 13: ...untime 30 s 44 TCIN x OTC standstill interval 30 min 44 OHQM x Option energy metering OFF 44 FMAX x Maximum flow 6 0 l 44 MEDT x Antifreeze type 1 44 MED x Antifreeze concentration 45 44 AH O s Switch...

Page 14: ...1 0 Ra 0 5 K Factory setting 120 0 F 45 0 C t1 O t2 O t3 O Thermostat switch on time Adjustment range 00 00 23 45 Factory setting 00 00 t1 F t2 F t3 F Thermostat switch off time Adjustment range 00 00...

Page 15: ...tinuously exceeded for the entire heating period DDIS S3 is used as the reference sensor and displayed as TSTT PDIS Monitoring period Adjustment range 0 30 0 24 h dd hh Factory setting 01 00 This func...

Page 16: ...s Channel Description Terminal Page COL x Temperature collector S1 37 TSTB x Temperature tank 1 bottom S2 37 TSTT x Temperature tank 1 at the top S3 37 S4 x Temperature sensor 4 S4 37 TR x Temperature...

Page 17: ...1 DTCF x Cooling switch off temperature difference 30 0 Ra 15 0 K 41 OSTC x Option tank cooling OFF 42 OHOL x Option holiday cooling OFF 42 THOL x Holiday cooling temperature 110 F 40 C 42 OCN x Optio...

Page 18: ...2 Display Channels Channel Description Terminal Page COL x Temperature collector S1 37 TST1 x Temperature tank 1 bottom S2 37 TST2 x Temperature tank 2 bottom S3 37 S4 x Temperature sensor 4 S4 37 TR...

Page 19: ...230 F 110 C 41 OSYC x Option system cooling OFF 41 DTCO x Cooling switch on temperature difference 40 0 Ra 20 0 K 41 DTCF x Cooling switch off temperature difference 30 0 Ra 15 0 K 41 OSTC x Option ta...

Page 20: ...r the maximum tank temperatures Arr 6 Tank 1 Tank 2 S4 Display Channels Channel Description Terminal Page COL x Temperature collector S1 37 TST1 x Temperature tank 1 bottom S2 37 TST2 x Temperature ta...

Page 21: ...40 OCC x Option collector cooling OFF 41 CMX x Maximum collector temperature 230 F 110 C 41 OSYC x Option system cooling OFF 41 DTCO x Cooling switch on temperature difference 40 0 Ra 20 0 K 41 DTCF x...

Page 22: ...tank will R1 R2 S1 S2 Arr 7 Display Channels Channel Description Terminal Page COL1 x Temperature collector 1 S1 37 TST x Temperature tank S2 37 COL2 x Temperature collector 2 S3 37 S4 x Temperature...

Page 23: ...ion system cooling OFF 41 DTCO x Cooling switch on temperature difference 40 0 Ra 20 0 K 41 DTCF x Cooling switch off temperature difference 30 0 Ra 15 0 K 41 OSTC x Option tank cooling OFF 42 OHOL x...

Page 24: ...ization active 37 FLL x ODB filling time active 37 STAB x ODB stabilization in progress 37 COL x Temperature collector S1 37 TSTB x Temperature tank 1 bottom S2 37 TSTT x Temperature tank 1 at the top...

Page 25: ...FF 42 THOL x Holiday cooling temperature 110 F 40 C 42 OCN x Option minimum limitation OFF 42 CMN x Minimum collector temperature 50 F 10 C 42 OCF x Option antifreeze OFF 42 CFR x Antifreeze temperatu...

Page 26: ...ange 2 40 Ra 1 20 K in steps of 2 Ra 1 K Factory setting 4 Ra 2 K Pump speed control A relative minimum pump speed can be allocated to the output R2 via the adjustment channel n2MN n2MN Pump speed con...

Page 27: ...ature limitation function provides a maximum tem perature setting usually to reduce scald risk in a storage tank If MX3O is exceeded relay 2 is switched off until the sensor falls below MX3F TIn Arr 8...

Page 28: ...ion Terminal Page INIT x ODB initialization active 37 FLL x ODB filling time active 37 STAB x ODB stabilization in progress 37 COL x Temperature collector S1 37 TSTB x Temperature tank 1 bottom S2 37...

Page 29: ...re difference 40 0 Ra 20 0 K 41 DTCF x Cooling switch off temperature difference 30 0 Ra 15 0 K 41 OSTC x Option tank cooling OFF 42 OHOL x Option holiday cooling OFF 42 THOL x Holiday cooling tempera...

Page 30: ...3 R2 Display Channels Channel Description Terminal Page COL x Temperature collector S1 37 TST x Temperature tank S2 37 S3 x Temperature sensor 3 S3 37 S4 x Temperature sensor 4 S4 37 TR x Temperature...

Page 31: ...collector 270 F 130 C 40 CMX s Maximum collector temperature 230 F 110 C 41 OCN x Option minimum limitation OFF 42 CMN x Minimum collector temperature 50 F 10 C 42 OCF x Option antifreeze OFF 42 CFR...

Page 32: ...he display channels by pressing buttons 1 and 2 Accessing the adjustment channels Scroll down in the display menu and press the forward button 1 for approx two seconds after you have reached the last...

Page 33: ...ual switching position is shown Heating circuit Tanks 1 and 2 with heat exchanger Backup heating with burner symbol Temperature sensor System screen system screen green everything OK red green flashin...

Page 34: ...ment by pressing button 3 again The symbol stops flashing Press button 1 or 2 to switch to the next or previous channel 1 2 3 SET The three pushbuttons of the SOM 7 plus controller The commissioning m...

Page 35: ...ther channels will be lost Therefore changing the system layout is always followed by a security enquiry Only confirm the security enquiry if you are sure that you wish to change the system layout sel...

Page 36: ...ting 140 F 60 C Note The controller is also equipped with a non adjustable emergency shutdown function which will shut the system down if the tank reaches 200 F 95 C 6 Minimum pump speed Adjust a mini...

Page 37: ...S3 temperature sensor 3 S4 temperature sensor 4 S3 S4 Sensor temperatures Display range 40 500 F 40 260 C Indication of other temperatures Indicates the current temperature of the corresponding sensor...

Page 38: ...w rate as well as the reference sensors S1 flow and S4 return are used for calculating the heat quantity supplied It is shown in kWh in the channel kWh and in MWh in the channel MWh The overall heat q...

Page 39: ...r 10 seconds Then the speed is reduced to the minimum pump speed value factory setting 30 If the temperature difference reaches the adjusted nominal temperature difference the pump speed increases by...

Page 40: ...on Emergency shutdown of the collector If the adjusted collector emergency shutdown temperature EM EM1 EM2 is exceeded the controller switches off the solar pump R1 R2 in order to protect the system a...

Page 41: ...and the switch on temperature difference DTCO is reached the solar system remains activated Solar loading is continued until either the tank temperature reaches 200 F 95 C emergency shutdown of the t...

Page 42: ...ect the tank from frost damage CFR CFR1 CFR2 Antifreeze temperature Adjustment range 40 0 50 0 F 40 0 10 0 C in steps of 1 Ra 0 5 K Factory setting 40 0 F 4 0 C Tank cooling function When the tank coo...

Page 43: ...to Su 1 or Su 2 solar loading of the subordinate tank will be aborted at once if the temperature in the priority tank tank 1 for Su 1 tank 2 for Su 2 falls below the adjusted maximum temperature If in...

Page 44: ...In system layout 7 Arr 7 both collectors are operated independently from each other by means of this function If the tank is being loaded by one collector the other one is nevertheless operated after...

Page 45: ...drainback option ODB is activated the pump will operate at 100 speed for the adjusted filling time tFLL in order to fill the system with fluid from the holding tank After tFLL pump speed will go down...

Page 46: ...Temperatures and temperature differences in F and Ra are displayed without units If the indication is set to C the units are displayed with the values UNIT Temperature unit selection Selection F C Fa...

Page 47: ...ith an ohmmeter In the following table the resistance values with the corresponding temperatures are shown Operating control lamp off Check the power supply Is it disconnected no The fuse of the contr...

Page 48: ...no Clean it Heat exchanger too small yes Replace with correctly sized one no Plausibility control of the option tube collector special function Change Ton and Toff correspondingly Switch on temperatu...

Page 49: ...p in manual operation yes There is no current check fuses replace them and check power supply The adjusted temperature difference for starting the pump is to high choose a value which makes more sense...

Page 50: ...erved Exclusively accessories designated for this appliance have been used All required steps up to and including commissioning have be carried out by a qualified contractor Maintenance as specified h...

Page 51: ...51...

Page 52: ...Fax 022 846 6703 Email stiebel stiebel eltron com pl www stiebel eltron com pl Russia STIEBEL ELTRON RUSSIA Urzhumskaya street 4 129343 Moscow Tel 495 775 3889 Fax 495 775 3887 Email info stiebel elt...

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