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Proprietary and Confidential

Sequence of operation

18

Purge

LED STATE

When feedback is received to confirm that the actuator is at 
the purge position, input must be received from the air 
switch on terminal 14 (SAFETY LIMIT INPUT) within the 
actuator travel time duration (timing t11). If the fan LED is 
blinking, the control is waiting for this input. If the fan LED is 
solid, this input has been received and the control is 
counting the purge time (timing t1).

Summary of Contents for BurnerPRO

Page 1: ...BURNERPRO TROUBLESHOOTING August 2020...

Page 2: ...Proprietary and Confidential Sequence diagram 2 Without valve proving Interrupted pilot...

Page 3: ...Proprietary and Confidential Sequence diagram 3 With valve proving...

Page 4: ...Proprietary and Confidential Standard timings S1 S6 Without valve proving With valve proving Sequence timings 4...

Page 5: ...Proprietary and Confidential Terminal designations 5 Without valve proving...

Page 6: ...Proprietary and Confidential Terminal designations 6 With valve proving...

Page 7: ...to Siemens LFL The wiring base is common with the Siemens LFL and the BurnerPRO is listed to function as a drop in replacement for the LFL Three common neutral and three common grounding terminals ar...

Page 8: ...Confidential Wiring base 8 Grounding leash The BurnerPRO is grounded using a quick disconnect plug on a wired grounding leash This provides a more positive ground over a copper spring which can lose c...

Page 9: ...Proprietary and Confidential Smart LEDs 9 IGNITION DAMPER OPEN DAMPER CLOSED OR ECONOMY AUTO MODE STATUS FLAME DETECTED FAN DEMAND RESET BUTTON...

Page 10: ...prietary and Confidential Sequence of operation 10 Standby LED STATE The standby state is when there is not a call for heat Terminal 11 ACTUATOR ECONOMY OUTPUT is powered with line voltage in this sta...

Page 11: ...LED STATE When in the lockout state the combination of LEDs will indicate the lockout code These codes can be found in the bulletin for the specific model Shown is the lockout code for STANDBY FALSE F...

Page 12: ...Confidential Sequence of operation 12 Lockout reset methods LED STATE A lockout condition can be reset by either pressing the reset button on the control or by applying line voltage to terminal 21 REM...

Page 13: ...ATE A lockout condition can be manually initiated by either pressing the reset button on the control or by providing voltage to terminal 21 The lockout code shown here indicated REMOTE RESET INPUT as...

Page 14: ...for heat input Terminal 4 provides line voltage that is used to power the operating limit string After passing through all the limits in series line voltage is applied to terminal 5 to indicate that...

Page 15: ...econds Failure of either input to prove in time will result in a lockout For models with valve proving both functions are wired in series to terminal 13 The air switch check is performed to verify tha...

Page 16: ...e LED above the reset button lights green and the fan LED also lights green The output for terminal 11 ACTUATOR ECONOMY OUTPUT is no longer powered Instead terminal 9 ACTUATOR HIGH FIRE OUTPUT is powe...

Page 17: ...must all be proven within the amount of time specified for actuator travel time timing t11 The count begins when feedback is received to indicate that the actuator is at the high fire position for pu...

Page 18: ...is at the purge position input must be received from the air switch on terminal 14 SAFETY LIMIT INPUT within the actuator travel time duration timing t11 If the fan LED is blinking the control is wait...

Page 19: ...D changes from green to amber The fan LED will also blink while in check mode Check mode in purge can be useful when a longer manual purge is desired or while checking other devices that require the c...

Page 20: ...he ignition position The output for terminal 9 ACTUATOR HIGH FIRE OUTPUT is no longer powered Instead terminal 10 ACTUATOR LOW FIRE OUTPUT is powered instead as the BurnerPRO is commanding the actuato...

Page 21: ...ary and Confidential Sequence of operation 21 Ignition LED STATE When the ignition position is reached terminal 16 IGNITION OUTPUT is powered for the duration of timing t3 before the pilot output is e...

Page 22: ...ation of timings TSA plus t7 and a flame signal must be detected during PTFI The flame signal can be from either the UV flame detector input or from the flame rod input Terminal 16 IGNITION OUTPUT wil...

Page 23: ...LED will also blink while in check mode While in check mode the flame signal will be indicated by the middle five LEDs to indicate the flame signal in increments of 20 Check mode in PTFI is used to ad...

Page 24: ...f timing t5 Terminal 16 IGNITION OUTPUT is not energized during PTFI Terminal 17 PILOT OUTPUT will remain energized for the duration of timing t9 Terminals 18 and 19 UPSTREAM and DOWNSTREAM MAIN OUTPU...

Page 25: ...transitions from MTFI to AUTO In auto the actuator is no longer commanded by the BurnerPRO and can modulate or mode independently if needed to maintain the connected load The control will remain in au...

Page 26: ...the BurnerPRO into check mode during PTFI press and hold the reset button until the status LED changes from green to amber The fan LED will blink to indicate that the LEDs are showing flame signal Th...

Page 27: ...control will postpurge for the duration of timing t6 During postpurge terminals 18 and 19 UPSTREAM and DOWNSTREAM MIAN OUTPUT are de energized Terminals 6 and 7 FAN OUTPUT remain energized until the e...

Page 28: ...ing 28 Disable proof of closure check Place a wire jumper from terminal 5 to terminal 12 to disable checking the proof of closure switches This satisfies the check by applying line voltage to terminal...

Page 29: ...le the air switch check This is the check to verify that the air switch is changing states between cycles This satisfies the check by using the line voltage that is provided by terminal 11 while in st...

Page 30: ...lace a wire jumper from terminal 5 to terminal 8 to disable checking actuator feedback This is the check to verify that the actuator is moving to the required positions This satisfies the check by usi...

Page 31: ...purge Applying voltage to terminal 15 at the beginning of the cycle when terminal 13 is powered indicates to the BurnerPRO to truncate the prepurge to a minimal time effectively no prepurge Note that...

Page 32: ...prepurge Applying voltage to terminal 15 at the end of the cycle when terminal 14 is powered indicates to the BurnerPRO to truncate the postpurge to a minimal time effectively no prepurge Note that th...

Page 33: ...ng voltage to terminal 15 at the beginning and end of the cycle terminal 4 is always powered indicates to the BurnerPRO to truncate both the prepurge and postpurge to a minimal time effectively no pur...

Page 34: ...non continuous pilot is connected to terminal 17 alone PILOT OUTPUT For an intermittent continuous pilot jumper terminals 17 PILOT OUTPUT and 18 UPSTREAM MAIN OUTPUT to combine the timings of the two...

Page 35: ...as a standard feature This is available from the onboard RJ45 connector provided Standard timings are offered i e S1 through S6 but all timings can be customized using the Config Wizard for BurnerPRO...

Page 36: ...inal 18 for the upstream and terminal 19 for the downstream A pressure switch is piped between these gas valves and the contact is connected to terminal 15 The BurnerPRO does a valve proving test at e...

Page 37: ...f the sequence after postpurge In either case the valve proving test consists of the same steps In the following diagrams blue represents gas is present red indicates the valve is closed or the switch...

Page 38: ...eam valve is opened so any gas that was present in between the valves is evacuated into the combustion chamber to be then evacuated during prepurge The length of time the valve remains open may be adj...

Page 39: ...that the gas pressure switch remains in the normally closed state This time period may be adjustable and is normally around 25 seconds If the test fails the flame safeguard will lockout This lockout...

Page 40: ...Pressurization After the evacuation test is passed the upstream gas valve opens for an adjustable period normally around five seconds to pressurize the space between the safety shutoff valves 40 NORM...

Page 41: ...sure that the gas pressure switch changes to the normally open state This time period may be adjustable and is normally around 25 seconds If the test fails the flame safeguard will lockout This lockou...

Page 42: ...BurnerPRO The following is a demonstration of the BurnerPRO performing a valve proving test with a lockout due to a valve proving switch failure switch didn t change state to off after last test indi...

Page 43: ...Proprietary and Confidential Valve proving BurnerPRO The Smart LEDs indicate the lockout code 43...

Page 44: ...Proprietary and Confidential Valve proving BurnerPRO The following is a demonstration of the BurnerPRO performing a valve proving test with a failure during the pressurization test 44...

Page 45: ...Proprietary and Confidential Valve proving BurnerPRO The Smart LEDs indicate the lockout code 45...

Page 46: ...Proprietary and Confidential Demonstration Sequence with valve proving The following is a demonstration of the BurnerPRO performing a successful startup including a valve proving test 46...

Page 47: ...THANK YOU...

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