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6720892984 (2019/02) US

SSB

16 | BURNERS cascade

3 .3 .5 .2 Power mode 2 – Maximum burners on (Rev . 4 .0 .905 .15906)

Power mode 2 is designed to have as many depending burners on

as possible. When the average burner power of the active depending

burners is above a set minimum power, another burner is started.

Burner startup

The next burner is started under the following conditions:

• When the average burner power of all depending burners is over the

set minimum burner power + hysteresis.

−

Sum of burner power of all depending [%] >

minimum_

power

[%] * (depending in burn + 1) +

minimum_

power_hysteresis

Burner shut down

The last started burner will be stopped under the following conditions:

• When the average burner power of all depending burners is under the

set minimum burner power.

−

Sum of burner power of all depending [%] <

minimum_

power

[%] * depending in burn.

Relevant variables

Specific Parameters

Level

(Default)

Value

Range

Power_Mode

2: Installer

0..3

Minimum_Power

[%]

Minimum average burner power
setting

2: Installer

1..100

Minimum_Power_

Hysteresis

[%]

Hysteresis for the minimum average
burner power setting

2: Installer

1..100

3 .3 .5 .3 Power mode 3 – Balanced burners on (Rev . 4 .0 .905 .15906)

Power mode 3 is designed to have a balanced water flow in systems with

a header/manifold.

Burner startup

The next burner is started under the following conditions:

• When the average burner power of all depending burners is over the

set start rate for the next burner.

−

Sum of burner power of all depending [%] >

Start_Rate_

Next_Burner

[%] * depending in burn.

Burner shut down

The last started burner will be stopped under the following conditions:

• When the average burner power of all depending burners is under the

set stop rate for the next burner.

−

Sum of burner power of all depending [%] <

Stop_Rate_

Next_Burner

[%] * depending in burn.

Relevant variables

Specific Parameters

Level

(Default)

Value

Range

°C

°F

°C

°F

Power_Mode

2: Installer

0..3

Start_Rate_Next_Burner

[%]

Threshold rate before start the
next Burner. Condition: at least 1
depending in burn state power [%] >
Start_Rate_Next_Burner [%]

2: Installer

1..100

Stop_Rate_Last_Burner

[%]

Threshold rate before start the next
Burner. Condition: all depending in
burn state Power [%] < Stop_Rate_
Next_Burner [%]

2: Installer

1..100

Delay_ Period_Start_Next_

Burner

[min]

When the timeout is over the last
dependent can be started

2: Installer

1..15

Delay_ Period_Stop_Last_

Burner

[min]

When the timeout is over the last
Burner can be stopped

2: Installer

1..15

Hyst_Up_Stop_Burner

Hysterese to stop Burner. Condition:
T_System above Header_Setpoint
plus Hyst_Up_Stop_ Burner

2: Installer

0..20 0..36

Hyst_ Down_Start_Burner

[sec]
Hysterese to stop Burner. Condition:
T_System below Header_Setpoint
plus Hyst_Up_Stop_Burner

2: Installer

0..20 0..36

Содержание SSB1000 SA

Страница 1: ...ller WARNING The operating instructions are part of the technical documents that must be handed over to the owner or operator of the heating system Explain to the owner or operator how to use the heating system using the operating instructions Make sure that they are familiar with all required information for the safe and proper operation of the heating system These instructions are available in E...

Страница 2: ...er Rev 3 0 0 0 34 5 3 3 Flame recovery Rev 3 0 0 0 34 5 3 4 Overheat detection safety limit Rev 3 0 0 0 34 5 3 5 Sensor availability Rev 3 0 0 0 34 5 3 6 Pump start every 24 hours Rev 3 0 0 0 35 5 3 7 Frost protection Rev 3 0 0 0 35 5 3 8 Flue temperature protection Rev 3 0 0 0 36 5 3 9 Input configuration 900MN Rev 4 0 905 16712 36 5 3 10 Output configuration 900MN Rev 4 0 905 16712 36 5 3 11 Hea...

Страница 3: ...tem parameters 49 Appendix D Control System Technical Specifications 54 Appendix E NTC sensor curve selection Rev 3 0 0 0 55 Appendix F 5 Error table Rev 4 0 905 17114 55 Appendix G PID Proportional Integral Derivative controller 59 Appendix H Cascade parameter 62 Appendix I Connector description for 905mn1x 120vac version 63 Appendix J PB Connectors Description 65 Appendix K Modbus 67 Appendix L ...

Страница 4: ...on air availability may cause dangerous flue gas leaks or formation Make sure that inlets and outlets are not reduced in size or closed If faults are not corrected immediately the boiler must not be operated until all faults have been corrected Inform the system operator and or owner of the fault and the danger in writing When working on the flue gas venting equipment or vent damper leakage of flu...

Страница 5: ...condensate drain is free from obstruction Periodically check the system pressure System pressure should be checked when the system is in standby mode and no call for heat is present Maintenance is mandatory and shall be carried out at least once a year This manual shall be read carefully in order to install and operate the boiler appropriately and safely Boiler installations settings and service s...

Страница 6: ...Modules use to communicate with each other AL BUS MODBUS 905TS Touch Screen COM2 905PB Display J25 905MN control J6 2 2 1 Modbus connection 905PB and 905TS The 905TS has a port on the backside called COM which is used to communicate with the 905PB display by MODBUS The following illustration shows the location of the COM port backside 905TS and pin numbering 6 7 8 9 1 2 3 4 5 LAN USB1 USB2 COM 24V...

Страница 7: ...le cascade controller 1 Calculated outdoor setpoint 2 Calculated outdoor setpoint 3 Calculated outdoor setpoint 4 0 10V input setpoint Emergency Cascade See above Cascade System Emergency Setpoint Cascade boiler supply setpoint increase calculated by the burner module cascade controller Emergency Boiler See above Boiler Emergency Setpoint Boiler Emergency Setpoint The following table describes how...

Страница 8: ...6 7 8 1 ON DIP 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 2nd burner depending 101 2 5 Additional device specifications No Type Brand Configure Article description 1 Flow Sensor Huba Control Huba DN25 Flow sensor for liquid media type 200 Flow range 0 5 150 l min 2 Water Pressure switch Huba Control Relative pressure switch type 620 62...

Страница 9: ...ress selection through e2prom setting When the Dip switch configuration is set to disabled the burner address is selected with an e2prom parameter This setting can be changed using a computer with LabVision PC software Burner address Burner Operation Function of sensor input J5 7 15 LabVision Device Address 0 default Standalone burner No function 100 1 1st boiler Managing System sensor 100 2 2nd b...

Страница 10: ...quested Cascade_Setpoint the managing burner calculates a required burner setpoint to achieve the requested Cascade_Setpoint The managing burner provides the calculated setpoint to all dependent burners The modulating power of the dependent burners is PID controlled based on the calculated setpoint and dependent burner supply temperature Cascade CH setpoint adaption When the system temperature is ...

Страница 11: ... means the calculated setpoint can change a maximum of 1 0 C every 100ms The slew rate can be set in steps of 0 1 C 100ms When set to 0 0 C 100ms the limitation is disabled Dependent Burner The CH mode for the cascade is defined by the setting of the managing burner CH mode settings on dependents are ignored In case a burner is set as dependent Address 2 8 16 the setpoint is always provided by the...

Страница 12: ...erval is over DHW Priority CH 1 The priority is permanently given to CH Demand DHW Priority DHW 2 The priority is permanently given to DHW Demand DHW CH Parallel 3 The priority us permanently given to DHW Demand But Under the following condition the CH pump can started Setpoint_CH SystemTemp Relevant variables Specific Parameters Level Default Value Range DHW Priority Both CH or DHW priority Paral...

Страница 13: ... is much higher than the setpoint In the latter case the Frost protection setpoint is sent to the dependent burner Quick Starting and Stopping Burners When there is a big difference between the T_System and the Cascade_Setpoint the call for a start or stop of the next or last depending is done quicker Quick Starting Burners If the T_System is Hyst_Down_Quick_Start degrees below the Cascade_Setpoin...

Страница 14: ...degrees above the Cascade_Setpoint the burners are stopped at intervals of Stop_ Interval for example 3 min Power balance When the T_System is between Hyst_Down_Start and Hyst_Up_Stop a power balance algorithm can be activated See 3 3 5 Cascade power balance mode Rev 4 0 905 15906 pag 15 Stop all dependent All the dependents are stopped as soon as the T_System is far greater than Cascade_Setpoint ...

Страница 15: ...ation to the system temperature T_ System The last 2 boilers burners are modulating to make sure that the power can be adapted to the system temperature without continuous cycling of the last burner s Below is a picture that shows an example with 4 boilers burners Burner Startup The next burner is started under the following conditions At least one PID controlled depending is operating at a power ...

Страница 16: ...artup The next burner is started under the following conditions When the average burner power of all depending burners is over the set start rate for the next burner Sum of burner power of all depending Start_Rate_ Next_Burner depending in burn Burner shut down The last started burner will be stopped under the following conditions When the average burner power of all depending burners is under the...

Страница 17: ...ending_To_Start 2 Installer 1 1 8 16 3 3 7 Cascade error handling 3 3 7 1 Emergencymode Open Shorted boiler or system sensor When the setting Permit_Burner_Emergency_Mode is enabled the control can go into emergency mode when the system sensor status is not ok When the system sensor is open or shorted the control goes into the emergency mode The managing burner display may show that the system is ...

Страница 18: ...Blue Negative Transflective Viewing direction 12 O clock 900PB06_3R 85 178 1 1 mm 4 1 3 Display functions Button Function RESET Reset Lockout error MENU Enter the main menu ESC Return to the Status overview LEFT Return to previous menu item or Status overview RIGHT Enter a menu item or confirm selection in Status overview when directly setting Actual setpoint or DHW setpoint ENTER Confirm a settin...

Страница 19: ...rt is active In case of an active error or alert the bottom right part of the PB screen is used to display the error or alert text Disable the DHW Service only for Storage appliance with 850MN It is possible to disable the DHW service by keeping pressing ENTER for 5 seconds The display will then show the string Standby on the Status overview The request for demand will be ignored in the following ...

Страница 20: ...play language and characters to Chinese Paragraph 4 2 5 2 describes how to set the language back from Chinese to English or any other language 4 2 5 1 SetthedisplaylanguagetoChinese Please follow the next steps which describe how to set the display language to Chinese 1 From the Status Overview press the MENU button once 2 Select Settings and press the ENTER button 3 Select General Settings and pr...

Страница 21: ...display to French select Français for Italian select Italiano 语言 English Français 中文 Italiano Once you have set the English language the screen will display its information in English again General setting Language Aα Unit Type Date Time Other Setting Press ESC to go back in the menu and return to the Status Indication screen ...

Страница 22: ...mp C F 1 User Outside Temp C F 1 User Return Temp C F 1 User System Temp C F 1 User 0 10V Input V 1 User Flow Rate l min 1 User RT Input Open Closed 1 User Water Pressure bar psi 1 User Ionization uA 1 User Burner State 1 User Error No 1 User Actual setpoint C F 1 User Settings General Language English 1 User Italian 1 User Unit type Metric C Bar etc 1 User Imperial F PSI etc 1 User Date Time Date...

Страница 23: ...tpoint Max C F 2 Installer 25 Warm Weather Shutdown C F 2 Installer 26 Boost Temp Incr C F 2 Installer 27 Boost Time Delay Min 2 Installer 28 Night Setback Temp C F 2 Installer 29 Weather Setpoint C F 2 Installer 30 HydroAir CH Hyst Down C F 3 Factory 31 HydroAir CH Hyst Up C F 3 Factory 32 HydroAir CH PID P 3 Factory 33 HydroAir CH PID I 3 Factory 34 HydroAir CH PID D 3 Factory 35 DHW Mode 0 5 2 ...

Страница 24: ...ergency Setpoint C F 2 Installer 75 Delay Per Start Next Dep Sec 2 Installer 76 Delay Per Stop Next Dep Sec 2 Installer Delay Per Quick Start Next Dep Sec 2 Installer Delay Per Quick Start Next Dep Sec 2 Installer 77 Hyst Down Start Boiler C F 2 Installer 78 Hyst Up Stop Boiler C F 2 Installer Hyst Down Quick Start Boiler C F 2 Installer Hyst Up Quick Stop Boiler C F 2 Installer Hyst Up Stop All B...

Страница 25: ...ressure bar psi 2 Installer Pressure Fill Hyst bar psi 2 Installer Service Reminder Days 2 Installer Service Status On Off Reset 2 Installer Mod Pump dT C F 2 Installer Mod Pump Start Time Sec 2 Installer Mod Pump Type 2 Installer Mod Pump Mode 2 Installer Mod Pump Min Pwr 2 Installer Appliance Type 0 4 2 Installer Min Flow 2 Installer Nominal Flow 2 Installer Main menu Menu item Submenu Parameter...

Страница 26: ...sly monitored The following conditions for the fan speed are checked The actual fan speed must be within 300rpm of the target fan speed When in the burn state both the actual and target fan speeds are above 4200rpm the check on the 300rpm range is not performed 5 2 Control functions Dependent on the required functions of the appliance and connected sensors and components several operation modes fo...

Страница 27: ...nt actual supply temp Anti_Cycle_T_ Diff C F 2 Installer 16 29 0 20 0 36 Hx_Diff_Delta_T_Min Minimum differential over heat exchanger T_Supply T_Return at which burner load is decreased C F 3 Factory 40 72 10 80 18 144 Hx_Diff_Max_Wait_Time Wait time after upper limit primary heat exchanger differential has been exceeded sec 3 Factory 0 sec 1 255 P_CH_Max Maximum burner power for CH operation 2 In...

Страница 28: ... is measured once a minute and averaged with the previous measurement This is to avoid commuting when the outside temperature changes rapidly If an open outdoor sensor is detected the CH_Setpoint will be equal to the Reset_Curve_Design_Boiler Shutdown temperature When the outdoor temperature rises above Warm_Weather_Shutdown the call for heat is blocked and the pumps are stopped There is a fixed h...

Страница 29: ...CH_Mode 2 Installer 0 0 1 2 3 4 CH_Hysterese_Up C F 3 Factory 5 9 0 20 0 36 CH_Hysterese_Down C F 3 Factory 5 9 0 20 0 36 Reset_Curve_Boiler_Minimum Sets the lower limit for the CH setpoint minimum C F 2 Installer 30 86 4 82 39 180 Reset_Curve_Boiler_Maximum Sets the upper limit for the CH setpoint maximum C F 2 Installer 80 176 27 90 81 194 Reset_Curve_Design_Boiler Sets high boiler CH setpoint w...

Страница 30: ...aragraph 5 2 1 2 CH mode 1 CH with an outdoor temperature reset and thermostat control pag 28 The CH_Setpoint can be calculated with an extra correction described in paragraph 5 2 1 2 CH mode 1 CH with an outdoor temperature reset and thermostat control pag 28 However the demand does not depend on the RT input but on the outdoor temperature and the outdoor reset setpoint When the outdoor temperatu...

Страница 31: ...de 2 Installer 0 0 1 2 3 4 CH setpoint Minimum C F 2 Installer 20 68 20 80 68 176 CH setpoint Maximum C F 2 Installer 80 176 20 80 68 176 5 2 2 Demand for Domestic Hot Water Rev 3 0 0 0 5 2 2 1 DHWmode0 NoDomesticHotWater No domestic hot water is available The T_DHW_Out sensor does not need to be connected 5 2 2 2 DHWmode1 Storagewithsensor In DHW Mode 1 DHW is prepared by warming up a indirect ta...

Страница 32: ... If T_Store drops below DHW_Store_Setpoint the store warm hold function becomes active C F 3 Factory 5 9 0 10 0 18 Status variables Level Value Range C F DHW control state Central heating controller state 0 Idle 1 Request 2 Demand 3 Post circulation 4 Off 5 2 2 3 DHWmode2 Storagewiththermostat In this Mode DHW is prepared by warming up a indirect tank Either a DHW pump or 3 way valve can used to s...

Страница 33: ...C F 3 Factory 5 9 0 20 0 36 DHW_Store_Hyst_Up Hysterese to stop burner for DHW Condition T_Supply above DHW_ Supply_Setpoint plus DHW_Supp_Hyst_Up C F 3 Factory 5 9 0 20 0 36 DHW_Store_Supply_Extra Increases the supply temperature to the indirect tank until DHW_Store_ Setpoint DHW_Store_Supply_Extra C F 2 Installer 15 27 0 30 0 54 DHW_Priority 2 0 Time 1 Off 2 On 3 Parallel DHW_Max_Priority_Time S...

Страница 34: ...r to keep the flame present This is done by increasing the minimal fan speed when the ionization current is too low Whenever the ionization current is high enough the minimal fan speed will be decreased again When the flame still disappears the minimal fan speed will be increased for the next burn cycle When the flame current is below Flamerod_Setpoint Flamerod_ Delta 1 0uA 0 2uA the minimal fan s...

Страница 35: ...elow FP_start_burn the burner is started When all of the sensors measure above FP_stop the frost protection demand is ended When the demand for frost protection is ended the pumps will post circulate for CH_Post_Pump_Period Relevant variables Relevant variables Specific Parameters Level Default Value Settable C F C F FP_start_pump C F 3 Factory 10 50 10 117 14 243 FP_start_burn C F 3 Factory 5 41 ...

Страница 36: ...Error When the control is in a Flue_Gas_Error the fan will run at the minimum fan speed Burner power limitation When a flue gas sensor is connected the control will limit the burner power when the flue gas temperature reaches the set Max_Flue_Gas_ Temp The maximum burner power is linearly limited when the flue gas temperature is within Max_Flue_Gas_Temp 5 C and Max_Flue_Gas_Temp Relevant variables...

Страница 37: ...ry 40 72 10 80 18 144 HX Diff Max Wait Time sec 3 Factory 0 1 255 sec 5 3 12 Appliance selection Rev 3 0 0 0 The control is designed to store specific parameter sets of different boiler models By defining specific setting for different appliance models the same control can be used for a complete product range Depending on which model the control is applied to it only will be necessary to change ju...

Страница 38: ...H DHW demand will be accepted as normal Relevant variables Specific Parameters Level Default Value Settable C F C F Anti_Legionella_ Setpoint Setpoint for Anti Legionella demand 3 Factory 60 140 50 90 122 194 Anti_Legionella_ Burn_Time min 3 Factory 30 5 120 Anti_Legionella_ Wait_Time Wait time for Anti Legionella demand 120 min after cold start 168 hr after first successful Anti Legionella demand...

Страница 39: ... burner is stopped In between Nominal_EX_Flow_Rate and Min_EX_Flow_Rate the burner power is linear limited To achieve this the PID output value is linear limited between Nominal_ EX_Flow_Rate and Min_EX_Flow_Rate However when the calculated PID output for temperature control is already below this limit this output value remains the current control value The power limitation will be performed only ...

Страница 40: ...ner switches OFF when the flow is below Min_EX_Flow_Rate parameter and generates a warning If the flow is in the range of Min_EX_Flow_Rate and Nominal_EX_Flow_Rate parameter the maximal power of the burner is linear limited If the flow is above the Nominal_EX_Flow_Rate parameter the maximum power of the burner is fully available Max available power Min Flow Nominal Flow Max 100 Min Flow m3 h 0 Rel...

Страница 41: ... System sensor D2 is Cascade system sensor Boiler sensor J6 J8 Iso Power S1 on J8 S1 off MANAGING BOILER Boiler sensor J6 J8 Iso S1 off J8 DEPENDENT BMS bus S1 off BOILER Max 4 boilers 90xMN 900PB Touch Screen Power Supply Max 2 burners or modules 90xMN D2 900PB Max 2 burners or modules RS485 RS232 Power Supply Touch Screen RS485 RS232 90xMN D1 Boiler manager 90xMN D2 90xMN D1 Boiler manager ...

Страница 42: ... 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 1 ON DIP 2 3 4 5 6 7 8 2nd burner depending 101 6 4 Set the Modules and Boiler Cascade Settings 6 4 1 Cascade of Modules Set the address for all the modules Boards Set the dipswitch as explained in paragraph 6 3 3 Set AL Power switch S1 and Dip switch for 905MN Dependent boards pag 42 6 4 2 Cascade of Modules Set Number of expected Modules to do only in the ma...

Страница 43: ...ing an active system test the 10 minute timer is reloaded NOTE for DHW Mode_7 and DHW Mode_8 the Actual_Flow_ Rate must be higher than Flow_Rate_Start in order that the board can go in to system test 7 1 1 System test for cascade burners with air damper functionality When a cascade system is configured with an air damper system test demand cannot be started before the air damper output is opened a...

Страница 44: ...switch does not open during this test the sensor temperature check stops the burner when the temperature increases to over this setpoint The error codes for both the Safety Limit switch and the sensor temperature check are locking code 15 MAX_TEMP_ERROR When the physical high limit test is over the settings that were overruled are restored When the test failed the exchanger flowrate function is st...

Страница 45: ...ice Reminder or Shutdown can be reset by the installer that services the appliance When the Service Reminder is being reset a service moment will be counted and the Service Overdue counter will be stored in the log history It is possible to reset the Service Reminder counters before the Service Reminder was actually set This should be done when the appliance was serviced before the Service Reminde...

Страница 46: ...7 3 J7 2 J7 4 T1 J17 1 T_Flue_1 sensor Flue gas sensor switch J10 1 J10 2 J10 5 J10 6 J11 2 J11 4 J11 1 J11 3 J8 1 J8 2 SWL J1 1 J1 5 J1 4 J1 2 PROG OUTPUT 4 CONFIG 1 2 CH Pump 3 DHW Pump PROG OUTPUT 1 2 CH Pump PROG OUTPUT 5 1 General Pump L N L L N N J3 4 J3 9 J3 3 J3 8 J3 1 J3 7 J3 5 J3 10 J3 2 REMOTE DISPLAY AL BUS PC Connection PROG INPUT 2 J3 6 J1 8 PROG OUTPUT 2 6 Alarm Relay 0 Disabled 1 E...

Страница 47: ...HW pumps the option shows the settings for a 3 way valve J3 1 not connected option 3 way valve DHW 3 J3 2 DHW pump 3 option 3 way valve CH 2 J3 3 CH System pump 4 J3 4 General pump 2 way valve 1 J3 5 Disabled 0 Alarm 6 J3 6 Disabled 0 Air damper 10 A 4 Pump connections Rev 3 0 0 0 The burner control can be applied for both heating only and combination CH and DHW appliances However many different c...

Страница 48: ...e mains fuse on 905MN is rated at 5AT but to guarantee reliable operation with enough margin for power fluctuations the maximum current through all outputs together must always stay below 4A Following are two examples of combinations of devices that can be connected Device Max Current Max Power Control and gas valve 0 5 A 60 VA General Pump 2 0 A 240 VA Other Pump Do not connect Power externally F...

Страница 49: ...C System parameters C 1 Settings stored in 905PB display Menu item Sub item Parameter Range Default Value Units User Level Language English French Chinese Italian English 1 User Unit type Metric Imperial Metric C Bar F PSI 1 User Date Time Date dd mm year 1 User Time 00 00 1 User Time Zone Settings 1 User Time Zone Correction UTC X 1 User Daylight Savings Time Disabled N C America Europe 1 User Di...

Страница 50: ...ply Temp 30 90 86 194 40 104 C F 2 Installer 22 Baseline Outdoor Temp 0 30 32 86 20 68 C F 2 Installer 23 Design Supply Min Limit 4 82 39 180 30 86 C F 2 Installer 24 Design Supply Max Limit 27 90 81 194 90 194 C F 2 Installer 25 Warm Weather Shutdown 0 35 32 95 22 72 C F 2 Installer 26 Boost Temp Increment 0 30 0 54 0 0 C F 2 Installer 27 Boost Time Delay 1 120 20 Min 2 Installer 28 Night Setback...

Страница 51: ...t Delay Time 0 15 10 Sec 3 Factory 92 Fan Speed Maximum 0 12750 6900 RPM 2 Installer 93 Fan Speed Minimum 0 12750 1900 RPM 2 Installer 94 Fan Speed Ignition 0 12750 4400 RPM 2 Installer 116 Prog Input 1 0 Disabled 1 Water pressure sensor 2 CH flow switch 3 Flue pressure switch 3 2 Installer 117 Prog Input 2 0 Disabled 1 DHW flow sensor 2 DHW flow switch 3 CH flow sensor 3 2 Installer 118 Prog Inpu...

Страница 52: ...rner CC 0 2 Installer 127 Prog Output 3 0 Disabled 1 General Pump 10 Air Damper 11 HIS 12 Modulating Pump 0 128 Prog Output 4 0 Disabled 1 General Pump 2 CH Pump 3 DHW Pump 4 System Pump 5 Cascade Pump 6 Alarm Relay 7 Filling Valve 8 LPG Tank 9 External Igniter 10 Air Damper 14 Alarm Burner CC 15 Status Burner CC 3 2 Installer 129 Flow Sensor Bitron Huba DN8 DN10 DN15 DN15 DN20 DN25 Huba DN25 2 In...

Страница 53: ... C F 2 Installer 147 Number of Units 1 8 8 2 Installer 148 Power Mode 0 Disabled 1 Min burners 2 Max burners 3 Balanced burners 2 2 Installer 79 Max Setp Offset Down 0 40 0 72 20 36 C F 2 Installer 80 Max Setp Offset Up 0 40 0 72 20 36 C F 2 Installer 81 Start Mod Delay Fact 0 60 60 Min 2 Installer 82 Next Module Start Rate 10 100 80 2 Installer 83 Next Module Stop Rate 10 100 25 2 Installer 84 Mo...

Страница 54: ...Power 0 100 20 2 Installer 181 PwrMode2 Hysteresis 0 100 40 2 Installer 182 Post Pump period 0 255 30 Sec 2 Installer Appendix D Control System Technical Specifications The 900 series burner controls have the following specifications Power Supply 230V 120VAC 15 10 40Hz to 70Hz Ambient Temperature Functional Storage 15 to 70 C 5 F to 158 F Peak temperatures not continuous 25 C to 75 C 13 F to 167 F...

Страница 55: ...ev 4 0 905 17114 In the next tables a description of all different errors is given Errors can be divided in three groups Non volatile locking errors can only be reset by the reset button Blocking errors will disappear when error is gone Warnings will disappear when the warning is gone also isn t stored in the e2prom When the control is in error the pump will be running This is to prevent the freez...

Страница 56: ...or at the moment the error occurs The time between this error and a new error will be counted The interval between an error and the previous error is shown as interval time in minutes hours days or weeks The previous error codes are also shown in LabVision also see the image on the following page Successful ignitions To prevent wear on the e2prom of the boiler control the successful ignitions are ...

Страница 57: ...as valve 21 FLAME_BEFORE_IGNIT Flame is detected before ignition 22 TOO_MANY_FLAME_LOSS Three time flame lost during 1 demand 23 CORRUPTED_ERROR_NR Error code RAM byte was corrupted to an unknown error code 24 FLUE_SWITCH_NOT_CLOSING The blocked flue sensor is not closed within 10 minutes 25 TSUPPLY_DIFF_ERROR The 2 supply sensors deviate too much for more than 60 seconds 26 TFLUE_DIFF_ERROR The 2...

Страница 58: ...utral of the main voltage power supply input are reversed 135 T_EXCHANGE_BLOCK_ERROR Exchange temperature exceeded 90 C 136 T_CHIMNEY_OPEN Chimney sensor open 137 T_EXCHANGE1_OPEN Exchange 1 sensor open 138 T_EXCHANGE2_OPEN Exchange 2 sensor open 139 T_SELECTION1_OPEN Selection 1 sensor open 140 T_SELECTION2_OPEN Selection 2 sensor open 141 T_SELECTION3_OPEN Selection 3 sensor open 142 T_OPTIONAL1...

Страница 59: ...r or pump for controlling the flow depending on the application Parameters used for the calculation are Input value sensor value such as temp Setpoint Output value PID PARAMETERS P I D Input value As input the parameter that needs to be controlled is given In most cases this is a sensor temperature This PID controller will then control this input value to the given setpoint Setpoint The setpoint v...

Страница 60: ...t close to the stability limit As it turns out under relay based feedback PID tuning most plants oscillate with a modest amplitude fortuitously at the critical frequency The procedure is as following 7 In order to use relay based tuning this tuning mode must be enabled in the software Set the PID P parameter to 1 PID I parameter to 0 and PID D parameter to 0 when the tuning mode is enabled 8 Set o...

Страница 61: ...SSB 6720892984 2019 02 US Service reminder 61 P period input u output Time t 2d 2a Example offSet 6400 a 1 3 C P 20sec Ku 4 6400 π 1 3 32 196 PID D Ku 2 195 2 100 PID I P 1 2 20 1 2 100 160 ...

Страница 62: ...36 Hyst_Up_Stop_Burner Stop Burner Diff C F 2 Installer 2 4 0 20 0 36 Hyst_Up_Stop_All Stop Burner Diff C F 2 Installer 6 11 0 30 0 54 Hyst_Down_Quick_Start Start Burner Diff in short time C F 2 Installer 10 18 0 20 0 36 Hyst_Up_Quick_Stop Stop Burner Diff in short time C F 2 Installer 4 7 0 20 0 36 Max_Range_Up_Limit Calculated setpoint Max offset down C F 2 Installer 20 36 0 20 0 36 Max_Range_Do...

Страница 63: ...ng System DHW Pump neutral only for Leading Class A General Pump phase Class A General Pump neutral Air Damper Output Not used Not used GENERAL CH AND DHW PUMP The max usable output current of a single output of J3 is 2A cos φ 0 7 Total combined usable output current of J3 and J4 is 3 5A cos φ 0 7 Maximal cable length is 1 meter Connector Pin Pin Description J4 1 2 3 4 5 6 PWM input Phase L Neutra...

Страница 64: ...Heat Exchanger Flow Sensor Pulse Gas Pressure Switch only for Leading VSS for General pump PWM control and Gas pressure switch GENERAL PUMP OUTPUT Maximal cable length is 1 meter Connector Pin Pin Description J8 1 2 AL BUS connector AL BUS CONNECTOR Connector to connect other communication devices onto the AL BUS communication bus or PC communication AL BUS POWER SWITCH The power ON this AL BUS ca...

Страница 65: ...r 1 2 AL BUS 1 AL BUS 2 AL BUS INTERFACE Connector Pin Pin Description J4 Not Placed Molex Mini Fit Jr 5566 Receptacle 1x2 top entry header 1 2 AL BUS 1 AL BUS 2 AL BUS INTERFACE Connector Pin Pin Description J5 Not Placed Molex Mini Fit Jr 5569 Receptacle 1x2 side entry header 1 2 AL BUS 1 AL BUS 2 AL BUS INTERFACE Connector Pin Pin Description J21 or J22 Not Placed Molex Mini Fit Receptacle 2x3 ...

Страница 66: ...re 2 pin and 5 pin connectors that can be used for programming J 2 2 Connection diagram 905PB0X_3R J7 02 J7 01 AL BUS RS485 Mod BUS AL BUS J25 2 J25 1 J25 3 J25 5 J25 4 J25 6 B GND AL_COMM A VSS 24V 905PB05_3R Connector Function J7 PC interface J25 Connection to MN control Modbus J 2 3 J25 Connector on 905PB05_3R J25 Wire Colors J25 1 Grey J25 2 Black J25 3 Green J25 4 Yellow J25 5 Red J25 6 Blue ...

Страница 67: ...are addressing range starts at 0x0001 then add 1 to the holding register addresses listed in the table above This is also applicable for the various test tools available for Modbus Holding registers that support writing can only be written to when writing is enabled Writing can be enabled by setting the Write enable bit in the Control register Also see chapter K 4 Control register and K 4 1 Write ...

Страница 68: ...units C F 124 X System Heat exchanger temperature if available Yes Depending on units C F 125 X Outside temperature if available Yes Depending on units C F Reserved 139 Reserved 140 X Firing Rate power output Yes 0 100 142 X Flame ionization current Yes 0 x μA 143 X Water pressure if available Yes Depending on units bar psi Reserved 159 Reserved K 3 3 Dependent Information 300 399 Holding register...

Страница 69: ...ee state table 344 X Error Code See error list 345 X Firing Rate power output Yes 0 100 Reserved 347 Reserved K 3 4 Settings Parameters 500 599 Holding register Access Description Remarks Automatic Conversion Range R W Settings Parameters 500 X X CH mode NV 0 x 501 X X DHW mode NV 0 x 502 X X CH set point V Yes Depending on units C F 503 X X DHW set point V Yes Depending on units C F 504 X X Reset...

Страница 70: ... items K 3 5 Service Reminder 1500 1550 The Service Reminder status and settings can be read written using the following holding registers To check if the Service Reminder is active the Hours_Till_Service 1501 holding register should be read When the Hours_Till_Service value is 0 the service reminder is active Holding register Acces Description Automatic Conversion Range R W Service Reminder Count...

Страница 71: ...eset when it is in Lockout lockout error is set When the controller is in lockout it can be reset by setting bit 14 in the control holding register Once the reset is executed the bit will automatically be cleared K 5 Unit selection For easier handling of holding registers the data format can be changed The data format that is selected will apply for both reading and writing of data Holding registe...

Страница 72: ...ice 900PB Ack write enabled Command on modbus Write from to The ack for the simple write request is the repetition of the previous request command 01h 06h 00h 63h 00h 01h B8h 14h 900PB Modbus Device Write ch setpoint value Command on modbus Write from to Simple Write in register 502 CH Setpoint the value 610 Send a request for update the CH Setpoint at a value of 61 C 01h 06h 01h F6h 02h 62h E8h 8...

Страница 73: ...is started 2 sec Safety period Ignit State Flame Proving 5 sec Ignit Fan stays at ignition speed The gas valve is opened Igniter stays on 3 sec Flame proving Fan stays at ignition speed The gas valve stays opened The igniter is stopped 2 sec Burn The fan is modulating The gas valve stays opened Post Burn The fan is set at ignition speed The gas valve is closed Initialize post purge 0 0 sec Post pu...

Страница 74: ...cked The actual fan speed must be within 300RPM of the target fan speed When in the burn state both the actual and target fan speeds are above 4200RPM the check on the 300RPM range is not performed 60 sec Switch input Function Reaction time Blocked Flue switch NC in series with Condensate pressure switch NC The Blocking error FLUE_PRESSURE_ERROR 156 is triggered if one of the two inputs is open 5 ...

Страница 75: ...BMS bus can be connected to all boilers Single boiler containing up to 2 modules burners BMS bus Cascade bus Module burner 1 Touch Screen RS485 RS232 Module burner 2 Demand 0 10V OpenTherm On Off T outside System sensor D2 is Cascade system sensor Boiler sensor J6 J8 Iso Power S1 on J8 S1 off MANAGING BOILER Boiler sensor J6 J8 Iso S1 off J8 DEPENDENT BMS bus S1 off BOILER Max 4 boilers 90xMN 900P...

Страница 76: ...ade Manager controls the cascade of multiple boilers Each boiler can have up to 8 units burners available M 2 1 Touch screen Touch screen information and settings CLIMATIC CURVE HR Access Description Range R W Climatic curve status info 20021 X Outdoor sensor temperature 50 150 C 58 302 F Climatic curve settings 21000 X X Reset Curve Boiler Design 0 100 C 32 212 F 21001 X X Reset Curve Boiler Mild...

Страница 77: ...0102 X Boiler 3 available present 0 No 1 Yes 20103 X Boiler 4 available present 0 No 1 Yes Boilers active heating 20132 X Boiler 1 is active heating 0 No 1 Yes 20133 X Boiler 2 is active heating 0 No 1 Yes 20134 X Boiler 3 is active heating 0 No 1 Yes 20135 X Boiler 4 is active heating 0 No 1 Yes Boiler errors 20164 X Boiler 1 has error one or more modules burners have an error 0 No 1 Yes 20165 X ...

Страница 78: ... hours total of all unit burner burn hours 0 65536hr Module Burner available 30100 X Module Burner 1 available present 0 No 1 Yes 30101 X Module Burner 2 available present 0 No 1 Yes Module Burner active heating see also holding register contents M 4 1 Burner Module 1 Status and Control Registers pag 80 40000 X Module Burner 1 is active heating State 40100 X Module Burner 2 is active heating State...

Страница 79: ...Error Number See error list 34385 X Boiler ID 0 Stand Alone 1 Managing 2 4 Dependent 0 4 34386 X Timestamp Day Of Week 0 6 Sunday Saturday 34387 X Timestamp Day Of Month 1 31d 34388 X Timestamp Month 1 12m 34389 X Timestamp Year 2000 2255y 34390 X Timestamp Hour 0 23 24h notation 34391 X Timestamp Minute 0 59min M 3 4 Boiler Service Reminder The Service Reminder status and settings can be read wri...

Страница 80: ...ontrol Registers HR Access Description Range R W Module Burner 1 status info 40000 X Current state of the unit burner State 40001 X Error of the unit burner See manual 40002 X Module supply setpoint calculated 0 100 C 32 212 F 40003 X Power level 0 0 100 0 40006 X General pump status 0 Off 1 On 40009 X CH Flow rate 0 255 l min 40011 X Actual fan speed RPM 40030 X Supply sensor temperature 50 150 C...

Страница 81: ...bit data for each holding register Some data types require a higher precision than a whole number integer these data types will be multiplied with a factor so the precision is not lost When the value for that data type is read it must be divided by the same factor to get the real value This also applies to writing the value then the value must first be multiplied by the factor before writing it to...

Страница 82: ...6720892984 2019 02 US SSB ...

Страница 83: ...SSB 6720892984 2019 02 US ...

Страница 84: ...echnology Corp 50 Wentworth Avenue Londonderry NH 03053 Tel 603 552 1100 Fax 603 965 7581 www boschheatingandcooling com U S A Bosch Thermotechnology Corp reserves the right to make changes without notice due to continuing engineering and technological advances ...

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