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Honeywell S4965 Series, Product Handbook, Page: 14 / 16

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Honeywell S4965 Series Product Handbook Download Page 14

EN2R-9053 0408R11-NE

14

EMC GUIDELINES

The position of the ignition cable has to be determined for low-
est emission.

Do not lead ignition cable close to other cabling.

To suppress Radio Frequency Interference (RFI) the boiler 
control including spark ignition cable should be mounted in 
sufficient shielded environment.

Summary of Contents for S4965 Series

Page 1: ...ame supervision of the main burner of the appliance and a boiler comfort control sub system for temperature pump and 3 way valve control Bi directional communication with a MMI enables comprehensive diagnostics and operation For glossary of terms abbrevations and symbols see document EN2R 9039 Contents General Description 2 Features 3 Dimensional drawing S4965 boiler control 4 Technical Specificat...

Page 2: ...ition control and a comfort boiler control Most of the standard control functions of a gas fired boiler can be performed within one single control box which can easily be clicked on the gas control Possible applications are Instantaneous water heaters Floor standing boilers Combi boilers Low Nox boilers Condensing boilers See chapter Features for the standard features which can be implemented in t...

Page 3: ... Dynamic airflow check Lock out on no air Automatic fan assisted atmospheric recognition Integral gas pressure modulation circuitry Pump control 3 way valve control Multi temperature CH and DHW control with DHW priority setting T control in CH mode Flow sensor input for DHW detection and control Sensor or contact switch high limit at control Communication to MMI enabling comprehensive diagnostics ...

Page 4: ... 8 9 16 18 1 5 10 X11 X12 X1 Material ABS V0 Tolerances 1 mm unless noted FOR CONNECTORS USE FEMALE PARTS Plastic part Pins Terminal X1 TYCO 1 106527 0 10 TYCO 106528 2 reel for AWG 22 26 insulation diameter 1 20 1 75 mm X11 TYCO 794617 6 6 TYCO 794607 reel TYCO 794611 for AWG 26 30 X12 TYCO 1 794617 6 16 X12 TYCO 1 794617 8 18 6 6 0 4 3 3 0 3 68 1 0 3 33 4 74 65 48 2 Material ABS V0 Tolerances 1 ...

Page 5: ...C Sensor type T7336B 1001 this sensor needs special input MicroCom Communication input and output input logic 0 0 8 Vdc logic 1 2 24 Vdc 10 kOhm output open collector 24 V and 10 mA max DC output depending on OS number 9Vrac 5mA max or 24Vdc 50mA and 7V 250mA Electrical PCB connectors High voltage spark 2 8 x 0 5 mm faston or 4 mm round Flame sensing 4 8 x 0 8 mm faston Mains connector 10 pole TYC...

Page 6: ... Cable and wiring length flame sensing cable and spark cable 0 5 m max for external components 0 5 m max except heat demand Remote reset Maximum of 5 resets in 15 minutes Tolerances and product life Spark frequency at 230 V line voltage 0 7 fspark fspark 1 4 fspark Spark energy 0 6 specified spark energy Product life 500 000 cycles for safety and main valve operator of gas valve 250 000 cycles at ...

Page 7: ...N OUT can only be configured as input or output Fig 2 Side connection CVBC for closed loop sparking Fig 3 Side connection CVBC for sparking to ground Fig 4 Side connection CVBC for combined ignition and flame sensing N COM GND Tx 1 L 6 4 Rx 1 1 10 18 9 out in out out out in N out out in out in out in out in out in out in out in out in out in out in out in out COM GND Vdc output 1 9 8 16 6 3 5 10 S...

Page 8: ...EN2R 9053 0408R11 NE 8 TIMING DIAGRAM Fig 5 General timing diagram CVBC Ts Tpost purge Tstab Tpre ignition Tpre purge Tpre ignition Tpre purge Alarm DBI IP pilot IP main valve P ...

Page 9: ... the critical minimum pressure and ignition pressure adjustment can be avoided If a throttle is used for maximum pressure regulation no adjustment is needed Only injectors have to be changed if LPG is needed see fig 6 for the control flow diagram Fig 6 LOCON control flow diagram Fig 7 Ionisation flame current versus the boiler load REMARK Electrode postition and choice is important In cooperation ...

Page 10: ...ange of 1 5 Electronic gas air at a constant gas quality with a modulation range of 1 10 Automatic chimney lenth compensation SQUARE is based on the phenomena that the ionisation current is a measure of the gas quality at a specific range of the burner load in a fully premix burner After calibration based on this phenomena the burner can be influenced by means of a micro bridge flow sensor see fig...

Page 11: ...st electrical shock NOTE 6 An automatic return high limit thermostat can be used Gold contacts for high limit thermostat are required NOTE 7 The modulation function of the S4965 boiler control units is checked during the start up safety check As a result the gas technical safety of the appliance provided with a S4965 boiler control unit can rely on the proper functioning of the adjustable gas outl...

Page 12: ...er supply when it is not connected to the gas control Wiring Use leadwire which can withstand at least 105 C ambient Use leadwire which is proven against moisture Wiring between boiler control and spark sensing probe should have good quality insulation suitable for the temperatures encountered Keep high voltage spark wire at least 10 cm away from other wires Conduct spark wire as close as possible...

Page 13: ...ulation Make sure no false flame current can flow from meter connections to earth If flame current is insufficient check that the flame sensing rod is fully enveloped by the flame and that the burner and the boiler control are reliable grounded Final checkout After installation and any adjustment start the appliance and observe a complete cycle to ensure that all burner components function correct...

Page 14: ...he ignition cable has to be determined for low est emission Do not lead ignition cable close to other cabling To suppress Radio Frequency Interference RFI the boiler control including spark ignition cable should be mounted in sufficient shielded environment ...

Page 15: ...trained personel and according inspection procedures STANDARDS AND APPROVALS Standards The S4965 has been designed to meet the European Standards EN 298 2003 Automatic gas burner control systems EN 60730 1 Automatic electric controls for household and simular use Regarding electric safety the S4965 can be used in appliances according to European Standard for household electrical requirements EN 60...

Page 16: ...seperately order nr 45 900 431 014 the same screw can be used NOTE boiler controls replacement parts and accessories will be available under TRADELINE label Ask your wholesaler for details NOTE An up to date product survey with details of all new and existing products in these series is available Contact your local Honeywell sales representative for more information Fig 9 Model number chart S4965 ...

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