STIEBEL ELTRON SOM 9s Installation, Operation, Functions And Options, Troubleshooting
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STIEBEL ELTRON SOM 9s Installation, Operation, Functions And Options, Troubleshooting

STIEBEL ELTRON SOM 9s Installation, Operation, Functions And Options, Troubleshooting

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SOM 9s
Simply the Best
Installation
Operation
Functions and options
Troubleshooting
en-US/CA
Manual
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Summary of Contents for STIEBEL ELTRON SOM 9s

  • Page 1 SOM 9s Simply the Best Installation Operation Functions and options Troubleshooting en-US/CA Manual Thank you for buying this product. Read this manual carefully to get the best performance from this unit. Please keep this manual carefully.

  • Page 2: Table Of Contents

    SOM 9s Contents Overview ............. 3 Functions and options ........75 Status level .............. 75 Installation ............4 Adjustment channels ..........78 Mounting ..............4 Overview of options and their parameters ..94 Electrical connection ..........4 Data communication / Bus ........6 User code and short menu - SD card slot ..............6...

  • Page 3: Overview

    • VBus ® • Energy-saving switch-mode power supply Included: 1 x SOM 9s 1 x accessory bag 3 x screw and wall plug 8 x strain relief and screw Additionally included in the full kit: 2 x FKP6 sensor 2 x FRP6 sensor...

  • Page 4: Installation

    SOM 9s Installation WARnIng! electric shock! Upon opening the housing, live parts Mounting are exposed. Î Always disconnect the control- ler from power supply before opening the housing! Note Strong electromagnetic fields can impair the screw function of the controller.
  • Page 5 SOM 9s 100 ... 240 V~ R1-R3 1 (1) A (100 ... 240) V~ 2 (1) A (100 ... 240) V~ Temp. Sensor Pt1000 The controller is supplied with power via a power supply WARnIng! electric shock! cable. The power supply of the device must be 100 ... 240V~ Upon opening the housing, live parts (50 ...

  • Page 6: Data Communication / Bus

    Do not use an SD-HC card! A standard SD card is not included with the SOM 9s. For more information about using an SD card, see chap. 6.2 (page 93) “SD card“.

  • Page 7: Overview Of The Systems

    SOM 9s Overview of the systems Standard solar system with 1 Solar system with 2 tanks and Solar system with 1 tank and Solar system with 1 tank and tank (page 9) heat exchange (page 11) backup heating (page 13)
  • Page 8 SOM 9s Solar system with east-/west Solar system with vertical Solar system with east-/west Solar system with east-/ collectors and heating circuit tank loading and east-/west collectors and 2 tanks (valve west collectors, vertical tank return preheating (page 51) collectors (page 53)

  • Page 9: System Layouts

    SOM 9s System layouts System 1 Standard solar system with 1 tank The controller calculates the temperature difference bet- temperature difference, the pump (R1) will be switched on ween collector sensor S1 and tank sensor S2. If the diffe- and the tank will be loaded until the switch-off temperature rence is larger than or identical to the adjusted switch-on difference or the maximum tank temperature is reached.
  • Page 10 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting OTCO Option evacuated tube collector function TCST 07:00 Evacuated tube collector starting time TCEN 19:00 Evacuated tube collector ending time TCRU 30 s...
  • Page 11 SOM 9s System 2 Solar system with 2 tanks and heat exchange The controller calculates the temperature difference bet- and the tank will be loaded until the switch-off temperature ween collector sensor S1 and tank sensor S2. If the diffe- difference or the maximum tank temperature is reached.
  • Page 12 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting OTCO Option evacuated tube collector function TCST 07:00 Evacuated tube collector starting time TCEN 19:00 Evacuated tube collector ending time TCRU 30 s...
  • Page 13 SOM 9s System 3 Solar system with 1 tank and backup heating The controller calculates the temperature difference bet- Domestic hot water backup heating (R4) can be carried out with a thermostat function (S3). If the value at S3 reaches ween collector sensor S1 and tank sensor S2.
  • Page 14 SOM 9s Adjustment channels Factory Channel Sub channel 1 Sub channel 2 Change to Description Page setting CMAX 230 °F Maximum collector temperature OCMI Option collector minimum limitation CMIN 50 °F Minimum collector temperature OTCO Option evacuated tube collector function...
  • Page 15 SOM 9s System 4 Solar system with 1 tank and 3-port valve for vertical tank loading The controller compares the temperature at sensor S1 to and the corresponding tank zone will be loaded up to the the temperatures at sensors S2 and S3. If the measured adjusted maximum temperature via the valve (R3).
  • Page 16 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F Maximum collector temperature OCMI...
  • Page 17 SOM 9s System 5 2-tank system with valve logic, 1 pump, 3 sensors and 3-port valve The controller compares the temperature at sensor S1 to the corresponding tank will be loaded up to the adjusted the temperatures at sensors S2 and S4. If the measured tem- maximum temperature via the valve (R3). Tank 1 is loaded perature differences are higher than the adjusted switch-on with priority.
  • Page 18 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting 20 °R DT2S Set temperature difference 2 RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 SMXS2 Sensor tank max 2...
  • Page 19 SOM 9s System 6 2-tank solar system with pump logic The controller compares the temperature at sensor S1 to activated and the corresponding tank will be loaded up to the temperatures at sensors S2 and S4. If the measured the adjusted maximum temperature at most.
  • Page 20 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting S2MAX 140 °F Tank maximum limitation 2 SMXS2 Sensor tank max 2 LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature...
  • Page 21 SOM 9s System 7 Solar system with east-/west collectors The controller compares the temperatures at the collector than the adjusted switch-on temperature differences, the sensors S1 and S5 to the tank temperature at sensor S2. corresponding pump (R1, R2) will be activated and the tank will be loaded.
  • Page 22 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting TCST1 07:00 Evacuated tube collector starting time 1 TCEN1 19:00 Evacuated tube collector ending time 1 TCRU1 30 s Evacuated tube collector runtime 1...
  • Page 23 SOM 9s System 8 Solar system with 1 tank and backup heating with solid fuel boiler The controller calculates the temperature difference bet- difference or the maximum tank temperature is reached. ween collector sensor S1 and tank sensor S2. If the diffe-...
  • Page 24 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMIN 50 °F Minimum collector temperature OTCO Option evacuated tube collector function TCST 07:00 Evacuated tube collector starting time TCEN 19:00 Evacuated tube collector ending time...
  • Page 25 SOM 9s System 9 Solar system with 1 tank and heating circuit return preheating The controller calculates the temperature difference bet- difference or the maximum tank temperature is reached. ween collector sensor S1 and tank sensor S2. If the diffe-...
  • Page 26 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMIN 50 °F Minimum collector temperature OTCO Option evacuated tube collector function TCST 07:00 Evacuated tube collector starting time TCEN 19:00 Evacuated tube collector ending time...
  • Page 27 SOM 9s System 10 Solar system with 1 tank, heating circuit return preheating and thermostatic backup heating The controller calculates the temperature difference bet- difference or the maximum tank temperature is reached. ween collector sensor S1 and tank sensor S2. If the diffe- With another temperature differential function (S3/S4) rence is larger than or identical to the adjusted switch-on...
  • Page 28 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMAX 230 °F Maximum collector temperature OCMI Option collector minimum limitation CMIN 50 °F Minimum collector temperature OTCO Option evacuated tube collector function...
  • Page 29 SOM 9s System 11 Solar system with vertical tank loading and heat exchange control The controller compares the temperature at sensor S1 to The priority logic effects prior loading of the upper zone the temperatures at sensors S2 and S3. If the measured of the tank.
  • Page 30 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F Maximum collector temperature OCMI...
  • Page 31 SOM 9s System 12 Solar system with vertical tank loading and thermostatic backup heating The controller compares the temperature at sensor S1 to adjusted maximum temperature via the valve (R3). The prio- the temperatures at sensors S2 and S3. If the measured rity logic effects prior loading of the upper zone of the tank.
  • Page 32 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting S2MAX 140 °F Tank maximum limitation 2 LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F...
  • Page 33 SOM 9s System 13 Solar system with vertical tank loading and backup heating with solid fuel boiler The controller compares the temperature at sensor S1 to sted maximum temperature via the valve (R4). The priority the temperatures at sensors S2 and S3. If the measured tem- logic effects prior loading of the upper zone of the tank.
  • Page 34 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F Maximum collector temperature OCMI...
  • Page 35 SOM 9s System 14 Solar system with vertical tank loading and return preheating The controller compares the temperature at sensor S1 to adjusted maximum temperature via the valve (R3). The prio- the temperatures at sensors S2 and S3. If the measured rity logic effects prior loading of the upper zone of the tank.
  • Page 36 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting S2MAX 140 °F Tank maximum limitation 2 LST2 Loading tank 2 COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F...
  • Page 37 SOM 9s System 15 Solar system with vertical tank loading and backup heating via heating backup The controller compares the temperature at sensor S1 to of the tank. the temperatures at sensors S2 and S3. If the measured With another temperature differential function (S3-heat...
  • Page 38 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LOAD2 > Loading 2 DT2O 12 °R Switch-on temperature difference 2 DT2F 8 °R Switch-off temperature difference 2 DT2S 20 °R Set temperature difference 2 RIS2 4 °R...
  • Page 39 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting OHQM > Energy metering option GFDS > Registration Grundfos sensors PRS* > Pressure monitoring option DATE> Enter date LANG > Language UNIT >...
  • Page 40 SOM 9s System 16 2-tank solar system with valve logic and heat exchange control The controller compares the temperature at sensor S1 to adjusted maximum temperature via the valve (R3). Tank 1 the temperatures at sensors S2 and S4. If the measured is loaded with priority.
  • Page 41 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting COL > Collector 270 °F Collector emergency temperature OCCO** Option collector cooling CMAX 230 °F Maximum collector temperature OCMI Option collector minimum limitation CMIN 50 °F...
  • Page 42 SOM 9s System 17 2-tank solar system with pump logic and heat exchange control The controller compares the temperature at sensor S1 to the adjusted maximum temperature. Tank 1 is loaded with the temperatures at sensors S2 and S4. If the measured priority.
  • Page 43 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 SMXS2 Sensor tank max 2 LST2 Loading tank 2 COL >...
  • Page 44 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LANG > Language UNIT > °F Unit OSDC > SD card option CODE 0000 User code RESET Factory setting * This channel is only available if the Grundfos sensors have been registered in the gFDS channel.
  • Page 45 SOM 9s System 18 Solar system with east-/west collectors and heat exchange control The controller compares the temperatures at the coll- both pumps will be activated and the tank will be loaded. ector sensors S1 and S5 to the tank temperature at Heat transfer control to an existent tank (R3) can be carried sensor S2.
  • Page 46 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMIN1 50 °F Minimum collector temperature 1 OTCO1 Option evacuated tube collector function 1 TCST1 07:00 Evacuated tube collector starting time 1 TCEN1...
  • Page 47 SOM 9s System 19 Solar system with east-/west collectors and thermostatic backup heating The controller compares the temperatures at the collector sponding pump (R1, R2) or both pumps will be activated and sensors S1 and S5 to the tank temperature at sensor S2. If the tank will be loaded.
  • Page 48 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMIN1 50 °F Minimum collector temperature 1 OTCO1 Option evacuated tube collector function 1 TCST1 07:00 Evacuated tube collector starting time 1 TCEN1...
  • Page 49 SOM 9s System 20 Solar system with east-/west collectors, thermostatic backup heating and return preheating The controller compares the temperatures at the collector With another temperature differential function (S3-heat sensors S1 and S5 to the tank temperature at sensor S2. If source/S4-heat sink) heating circuit return preheating (he- one of the measured temperature differences is higher than ating circuit backup) is possible with another valve (R3).
  • Page 50 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting CMIN1 50 °F Minimum collector temperature 1 OTCO1 Option evacuated tube collector function 1 TCST1 07:00 Evacuated tube collector starting time 1 TCEN1...
  • Page 51 SOM 9s System 21 Solar system with east-/west collectors and heating circuit return preheating The controller compares the temperatures at the collector the tank will be loaded. sensors S1 and S5 to the tank temperature at sensor S2. If With another temperature differential function (S3-heat...
  • Page 52 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting OTCO1 Option evacuated tube collector function 1 TCST1 07:00 Evacuated tube collector starting time 1 TCEN1 19:00 Evacuated tube collector ending time 1...
  • Page 53 SOM 9s System 22 Solar system with vertical tank loading and east-/west collectors The controller compares the temperatures at the collector activated and the corresponding tank zone will be loaded sensors S1 and S5 to the tank temperatures at the sensors up to the adjusted maximum temperature via the valve (R3).
  • Page 54 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting DT2S 20 °R Set temperature difference 2 RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 LST2 Loading tank 2 COL 1 >...
  • Page 55 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting UNIT > °F Unit OSDC > SD card option CODE 0000 User code RESET Factory setting * This channel is only available if the Grundfos sensors have been registered in the gFDS channel.
  • Page 56 SOM 9s System 23 Solar system with east-/west collectors and 2 tanks (valve logic) The controller compares the temperatures at the collector ding pump (R1, R2) or both pumps will be activated and sensors S1 and S5 to the temperatures at S2 and S4. If one...
  • Page 57 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 SMXS2 Sensor tank max 2 LST2 Loading tank 2 COL 1 >...
  • Page 58 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting LANG > Language UNIT > °F Unit OSDC > SD card option CODE 0000 User code RESET Factory setting * This channel is only available if the Grundfos sensors have been registered in the gFDS channel.
  • Page 59 SOM 9s System 24 Solar system with east-/west collectors, vertical tank loading and heat exchange The controller compares the temperatures at the collector corresponding tank zone will be loaded up to the adjusted sensors S1 and S5 to the temperatures at S2 and S3. If one maximum temperature via the valve (R3). The upper tank of the measured temperature differences is higher than the zone is be loaded with priority.
  • Page 60 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 LST2 Loading tank 2 COL 1 > Collector 1 CEM1 270 °F...
  • Page 61 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting MAN4 Auto Manual mode 4 BLPR > Blocking protection OTDIS > Thermal disinfection option OPARR > Parallel relay option OHQM > Energy metering option GFDS >...
  • Page 62 SOM 9s System 25 Solar system with east-/west collectors, vertical tank loading and thermostatic backup heating The controller compares the temperatures at the collector up to the adjusted maximum temperature via the valve (R3). sensors S1 and S5 to the tank temperatures at the sensors The priority logic effects prior loading of the upper zone S2 and S3.
  • Page 63 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting DT2F 8 °R Switch-off temperature difference 2 DT2S 20 °R Set temperature difference 2 RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2...
  • Page 64 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting MAN3 Auto Manual mode 3 MAN4 Auto Manual mode 4 BLPR > Blocking protection OTDIS > Thermal disinfection option OPARR > Parallel relay option OHQM >...
  • Page 65 SOM 9s System 26 Solar system with east-/west collectors, vertical tank loading and backup heating with solid fuel boiler The controller compares the temperatures at the collector up to the adjusted maximum temperature via the valve (R4). sensors S1 and S5 to the tank temperatures at the sensors The priority logic effects prior loading of the upper zone S2 and S3.
  • Page 66 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting DT2S 20 °R Set temperature difference 2 RIS2 4 °R Rise 2 S2MAX 140 °F Tank maximum limitation 2 LST2 Loading tank 2 COL 1 >...
  • Page 67 SOM 9s Adjustment channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting MAN4 Auto Manual mode 4 BLPR > Blocking protection OTDIS > Thermal disinfection option OPARR > Parallel relay option OHQM > Energy metering option GFDS >...
  • Page 68 SOM 9s Electrical connection of a high-efficiency pump (HE pump) Speed control of a HE pump is possible via a PWM signal. page 4). In the PUMP adjustment channel one of the For this purpose, the pump has to be connected to the relay PWM control types has to be selected.

  • Page 69: Operation And Function

    SOM 9s Operation and function The controller is operated via the 7 buttons next to the display. They have the following functions: 3.1 Buttons Button - scrolling upwards Button - scrolling downwards Button - increasing adjustment values Button - reducing adjustment values...

  • Page 70: Indications And System Monitoring Display

    SOM 9s note: Some of the menu items depend on the selected system and the adjusted options. Therefore, they are only displayed if they are available. note: The abstract from the menu structure shown above is for information on the structure of the controller menu and is therefore not complete.

  • Page 71: Further Indications

    SOM 9s System screen in the system monitoring display 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 the system – either flashing, permanently shown or “hidden”.

  • Page 72: Status Menu

    SOM 9s Status menu During normal operation of the controller, the display is in the status level. This one indicates the measurement values shown in the table. In addition to the adjustment values, possible error messages are indicated in the status menu (see chap. 98).

  • Page 73: Initial Commissioning

    SOM 9s Initial commissioning When the hydronic system is filled and ready for operation, When the controller is commissioned for the first time or connect the controller to the power supply. when it is reset, it will run a commissioning menu after the initialization phase.

  • Page 74: Loading Tank

    SOM 9s 7. Loading tank 2: Î Switch on or off the “loading tank 2” option. note: “Loading tank 2” can only be adjusted if a 2-tank system or vertical tank loading has been selected in the sub channel ARR.

  • Page 75: Functions And Options

    SOM 9s Functions and options note: The values and adjustment channels shown Status level depend on the selected system, the functions and options and will only be displayed in the expert level. Display of blocking protection time Blocking protection In order to protect the pumps against blocking after stand-...
  • Page 76 SOM 9s Display of further temperatures Indicates the current temperature at the corresponding TSFB, TRET, TSTR, sensor. The display of these temperatures depends on the TFHQM, TRHQM, system selected. TSFL(VFS), TSRE (RPS) • TSFB : Temperature solid fuel boiler Other measured temperatures •...
  • Page 77 SOM 9s Display of heat quantity Indicates the heat quantity produced in the system. For this kWh/MWh: purpose, the energy metering option has to be enabled. Heat quantity in kWh / MWh The flow rate as well as the values of the reference sensors S1 (flow) and S4 (return) are used for calculating the heat quantity supplied.

  • Page 78: Adjustment Channels

    SOM 9s Adjustment channels note: If the controller is commissioned for the first time, the commissioning menu will start. The subsequent selection of a new system will reset all other adjustments to the factory settings. Selecting the system Selection of the appropriate system. Each system has...

  • Page 79: Sensor Maximum Tank Temperature

    SOM 9s Sensor maximum tank temperature Allocation of the sensor for tank maximum limitation. The maximum limitation always refers to the sensor selected. LOAD(1,2) / S(1,2)MAXS If S3 is selected, the differential control will be carried out Sensor tank maximum temp.

  • Page 80: Collector Emergency Shutdown

    SOM 9s Collector emergency shutdown When the collector temperature exceeds the adjusted coll- COL(1,2) / CEM(1,2) ector emergency temperature (CeM / CeM1 / CeM2), the Collector emergency solar pump (R1 / R2) is switched off in order to protect the...

  • Page 81: Evacuated Tube Collector Function

    SOM 9s evacuated tube collector function This function helps overcome the non-ideal sensor position with some evacuated tube collectors. COL / OTCO (1, 2) This function operates within an adjusted time frame, Evacuated tube collector beginning at TCST and ending at TCen. It activates the...

  • Page 82: Antifreeze Function

    SOM 9s Antifreeze function The antifreeze function activates the loading circuit between the collector and the tank when the temperature falls below COL (1) / OCFR the adjusted temperature CFR O. This will protect the fluid Antifreeze function against freezing or coagulating. If CFR F is exceeded, the Selection: ON / OFF solar pump will be switched off again.
  • Page 83 SOM 9s Tank set option Additionally, the following options can be activated: LLOGI / PRIO / OSTS Tank set option OSTS: If the selected priority tank Tank set option reaches its set temperature, the subordinate tank will be Selection ON / OFF loaded until it reaches its set temperature.

  • Page 84: Drainback Option

    SOM 9s Drainback option A drainback system permits the heat transfer fluid to drain LLOGI / ODB back into the holding tank when solar energy is not coll- Drainback option ected. The drainback option will initiate the filling of the Selection: ON / OFF system when solar loading begins.

  • Page 85: System Cooling

    SOM 9s note: LLOGI/DTOVR The overrun function is only available, if both Adjustment range: 0.0 ... 40.0 °R Factory setting: 10 °R Grundfos sensors (VFS and RPS) are used. Different cooling functions can be activated: system cooling, Cooling functions tank cooling and heat dump.

  • Page 86: Maximum Temperature Limitation

    SOM 9s Heat exchange function / solid fuel boiler / return preheating The heat exchange function is used for transporting heat DT3 / DT3O from tank 1 to tank 2. Switch-on temperature diff. Additionally, minimum and maximum temperature limits and Adjustment range: 2.0 ...

  • Page 87: Return Preheating

    SOM 9s The reference sensor for the heat exchange function (heat DT3 / S2DT3 source) for tank 1 is sensor S3 (TSTT). The reference sensor Reference sensor tank 1 (heat sink) for tank 2 (S2DT3) is S4. It can be changed to S5...
  • Page 88 SOM 9s In order to block the thermostat function for a certain AH / t1O period, there are three time frames t1 ... t3. The switch-on Switch-on time 1 and switch-off times can be adjusted in steps of 15 minutes.

  • Page 89: Thermal Disinfection With Starting Delay

    SOM 9s Option: Thermal disinfection (OTDIS) Reference sensor for the thermal disinfection is S3! OTDIS It is possible to adjust this sensor in the channel Thermal disinfection function TSDIS. Adjustment range: ON / OFF This function is used for protecting the upper tank zone Factory setting: OFF against legionella by activating the backup heating.

  • Page 90: Energy Metering

    SOM 9s For this function, free sensors at an appropriate position can OTDIS / TSDIS be selected. Reference sensor for the thermal disinfection Sensor thermal disinfection is S3. Adjustment range 2, 3, 4, 5 The relay for the thermal disinfection function can be se- Factory setting: 3 lected.
  • Page 91 SOM 9s Antifreeze type: OHQM / MED% 0 : water Antifreeze concentration in 1 : propylene glycol vol.% 2 : ethylene glycol MED% is “hidden” when 3 : Tyfocor LS / G-LS ® MEDT 0 or 3 is used Adjustment range: 20 ... 70 %...
  • Page 92 SOM 9s Overpressure If the system pressure exceeds the adjustable maximum PRS > OOVPR value OVPRO, an error message will appear. If the system Overpressure pressure exceeds or falls below the switch-off threshold, the Adjustment range: ON / OFF relay will be deblocked.
  • Page 93 SOM 9s Language In this adjustment channel, the menu language can be LANG chosen. Language • dE : German Selection: dE,En • En : English Factory setting: En SD card If an SD card is used, is shown on the display. If the SD card is full, is flashing.

  • Page 94: Overview Of Options And Their Parameters

    SOM 9s Overview of options and their parameters In the following, the additional options and parameters are been selected. Some of the options and parameters will listed. only be displayed, if they are available with the individual adjustments. The options and parameters displayed depend on the...
  • Page 95 SOM 9s Channels Channel Sub channel 1 Sub channel 2 Factory Change to Description Page setting OVPRF 5.0 bar Overpressure - switch-off value OLEAK Low pressure LEAKO 0.7 bar Low pressure - switch-on value LEAKF 1.0 bar Low pressure - switch-off value DATE>...

  • Page 96: User Code And Short Menu - Adjustment Values

    SOM 9s User code and short menu - Adjustment values The access to some adjustment values can be restricted via Code a user code (customer). For safety reasons, the user code should generally be set to the customer code before the controller is handed to the customer! 1.

  • Page 97: Messages

    SOM 9s Messages In the case of an error, the directional pad flashes red and a In the case of a sensor error, the system is switched off, and message is indicated in the status display. A warning triangle a message appears on the display marked by an “E”. Addi- is additionally indicated.

  • Page 98: Troubleshooting

    SOM 9s Troubleshooting If a malfunction occurs, a message will appear on the display of the controller. fuse WARnIng! electric shock! Directional pad flashes red. The symbol is indicates Upon opening the housing, live parts on the display and the symbol flashes.

  • Page 99: Miscellaneous

    SOM 9s Miscellaneous Pump is overheated, but no heat transfer from the colle- Pump starts for a short moment, switches off, switches ctor to the tank, flow and return have the same tempera- on again, etc. ture; perhaps also bubble in the lines.
  • Page 100 SOM 9s Tanks cool down at night. Control the non-return Further pumps which are valve in warm water cir- connected to the solar culation - o.k. tank must also be che- cked. Collector circuit pump runs in the night ? Check controller Clean or replace it.

  • Page 101: Accessories

    SOM 9s Accessories 10.1 Sensors and measuring instruments Temperature sensors The product range includes high-precision platinum tem- perature sensors, flatscrew sensors, outdoor temperature sensors, indoor temperature sensors, cylindrical clip-on sensors, also as complete sensors with immersion sleeve. Overvoltage protection device In order to avoid overvoltage damage at collector sensors (e.g.

  • Page 102: 10.3 Visualization Modules

    SOM 9s The VBus / LAN interface adapter is designed for the direct ® connection of the controller to a PC or router. It enables easy access to the controller via the local network of the owner. Thus, controller access, system parametrization and data charting can be effected from every workstation of the network.

  • Page 103: Index

    SOM 9s Index Antifreeze function ............... 81 Operating hours counter ............ 76 Other temperatures, display channel ........ 76 Overpressure ................. 92 Blocking protection time, display channel......75 Overrun ................... 84 Booster function ..............84 Parallel relay ................90 Collector cooling ..............80 Pause control .................
  • Page 104 Another use outside the copyright requires faults can never be excluded, please note: the approval of Stiebel Eltron, Inc.. This especially applies for copies, translations, micro films and the storage into Your own calculations and plans, under consideration of the electronic systems.

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