6720892984 (2019/02) US SSB
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1 Key to symbols and safety instructions .............. 4
1.1 Key to symbols ..................................4
1.2 Safety instructions ...............................4
1.3 General warning .................................4
2
STAND-ALONE BOILER (Burners Cascade) - SYSTEM
ARCHITECTURE
............................. 6
2.1 General........................................6
2.2 905TS Control Systemn ...........................6
2.2.1 Modbus connection 905PB and 905TS ...............6
2.2.2 Setpoints on touch screen .........................7
2.3 2 Burners Cascade with Touchscreen and Building
Management System (BMS) .......................7
2.4 Dipswitch setting for 2 Burners Cascade ..............8
2.5 Additional device specifications .....................8
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BURNERS cascade ........................... 9
3.1 Burner cascade communication setup ................9
3.2 Setting the burner address (Rev. 4.0.905.15250)........9
3.2.1 E2prom address selection through e2prom setting ......9
3.2.2 E2prom address selection through dip-switch input......9
3.2.3 Communication with LabVision PC software ..........10
3.3 Cascade – Heating only (Rev. 4.0.905.15250).........10
3.3.1 Cascade – domestic hot water .....................12
3.3.2 Cascade – DHW priority (Rev. 3.0.0.12377) ..........12
3.3.3 Limitation of the MAX power for DHW (Rev.
4.0.905.16570) .................................12
3.3.4 Cascade – start/stop sequence (Rev. 3.0.0.12315) .....13
3.3.5 Cascade – power balance mode (Rev. 4.0.905.15906) ..15
3.3.6 Cascade – burner rotation (Rev. 4.0.905.x) . . . . . . . . . . .17
3.3.7 Cascade – error handling .........................17
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Service display .............................18
4.1 General.......................................18
4.1.1 Introduction....................................18
4.1.2 General information .............................18
4.1.3 Display functions ...............................18
4.1.4 Display icons ..................................18
4.2 Screens ......................................19
4.2.1 Splash screen (Rev 1.1.0.13425)...................19
4.2.2 Entering the menu ..............................19
4.2.3 Protected menu items ...........................19
4.2.4 DAir Sequence .................................20
4.2.5 Language settings ..............................20
4.3 Menu Structure.................................22
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Main control ...............................26
5.1 Ignition cycle (Rev 3.0.0.0)........................26
5.2 Control functions ...............................26
5.2.1 Demand for central heating (Rev 3.0.0.0) ............26
5.2.2 Demand for Domestic Hot Water (Rev 3.0.0.0) ........31
5.3 Safety and system function .......................34
5.3.1 Flame detection (Rev 3.0.0.0) .....................34
5.3.2 Ionization jumper (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 Heat exchanger protection: max differential (Rev 3.0.0.0) 37
5.3.12 Appliance selection (Rev 3.0.0.0)...................37
5.3.13 Anti-legionella protection (Rev 3.0.0.0) ..............37
5.3.14 De-Air sequence (Rev 3.0.0.0).....................38
5.3.15 Low water cut off (Rev 3.0.0.0).....................39
5.3.16 Heat exchanger protection (Rev 3.0.0.0) .............39
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Boiler cascade..............................41
6.1 Extended 4x2 boiler/burner cascade with Touch Screen
and Building Management System (BMS) ............41
6.2 Compensation for secondary manifold temperature on
single boiler ...................................42
6.3 Set Switches for all cascade boards ................42
6.3.1 Power off all the boards ..........................42
6.3.2 Set AL Power switch S1 and Dip switch for 905MN
Managing of Boiler X ............................42
6.3.3 Set AL Power switch S1 and Dip switch for 905MN
Dependent boards ..............................42
6.4 Set the Modules and Boiler Cascade Settings ........42
6.4.1 Cascade of Modules: Set the address for all the
modules Boards ...............................42
6.4.2 Cascade of Modules: Set Number of expected Modules
(to do only in the managing of Modules) .............42
6.4.3 Cascade of Boilers: Set Boiler Address for all the
Managing boards ...............................42
6.4.4 Cascade of Boilers: Set Number of expected Boiler (to
do only in the managing of Boiler) ..................42
7
System test................................43
7.1 System test (Rev 3.0.0.0).........................43
7.1.1 System test for cascade burners with air-damper
functionality ...................................43
7.2 Physical high limit test mode. (100°C +/- 5°C).........43
7.2.1 Starting the test ................................43
7.2.2 Running the test ................................43
7.2.3 Stopping the test ...............................44
7.2.4 Monitoring of attempts ...........................44
7.2.5 Limitations ....................................44
7.3 LWCO Error evaluated at Boiler level................44
7.4 System test in cascades with air damper ............44
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Service reminder ............................45
8.1 Service Reminder...............................45
Contents