2. BUrners TRAining CEntre GAS BURNERS N 900 H/L N 900 H/L series

3. BUrners TRAining CEntre 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO NC C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 1 0” Sec.

4. BUrners TRAining CEntre 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO NC C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 2 0” Sec.

5. BUrners TRAining CEntre 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO NC C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Burner is in Standby Position Waiting For Call For Heat 3 0” Sec.

6. BUrners TRAining CEntre 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO NC C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Tension At Servo Motor #1 Ensures Closed Position of ST0 4 0” Sec.

7. BUrners TRAining CEntre 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO NC C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Thermostat Closes 5 0” Sec.

8. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Thermostat Closes 6 0” Sec.

9. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor If The Air Pressure Switch is Not in the Normally Closed Position the Burner cannot start If The Proof of Closure Switch is opened the Control Box is not Supplied Tension at #3 the CB begins to turn 7 0” Sec.

10. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor After 6 Sec. The Control Box Main Relay is Supplied 8 6” Sec.

11. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor The Control Box is Then Supplied Through #5 9 6” Sec.

12. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Fan Motor is Supplied Through #10 Tension at Servo Motor #2 Drives The SM to Start Position (ST1) 10 6” Sec.

13. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Low Voltage Tap is Supplied But is Not Used 11 6” Sec.

14. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Air Pressure Switch Changes to Normally Opened Position 12 6 -13” Sec.

15. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 13 6 -13” Sec.

16. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Tension is No Longer Found At #3 14 6 -13” Sec.

17. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor This Circuit Remains Until Prepurge is Completed 15 Prepurge

18. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 16 Prepurge

19. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor At 61.5 Seconds #14 and #12 Are Supplied at the Same Time 17 61.5” Sec.

20. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Tension at SM #10 Supplies #7 Opening the First Valve 18 61.5” Sec.

21. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor Flame Signal 19 61.5 - 66” Sec.

22. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor After 4.5 Seconds Ignition Transformer is No Longer Supplied 20 66” Sec.

23. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 10 Seconds Later Tension is Present at #13 21 76” Sec.

24. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 22 Now The Second Stage Valve May be Supplied 76” Sec.

25. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 23 Now The Second Stage Valve May be Supplied Thermostat Closes 76” Sec.

26. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 24 Now The Second Stage Valve May be Supplied Thermostat Closes Tension At #3 Drives ST2 to the Open Position 76” Sec.

27. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 25 Now The Second Stage Valve May be Supplied Thermostat Closes Through #4 Tension is Provided to #5 Opening the second Valve 76” Sec.

28. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 26 Through #4 Tension is Provided to #5 Opening the second Valve 76” Sec.

29. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 27 76 - 90” Sec.

30. BUrners TRAining CEntre NC 14 11 A B17 2313 10 12 8 6 5 TB 1 23456789 12 1615 9 0 1 2 4 5 10 3 7 M 11 10 Servo Motor NO C PA White Brown Blue Black F1 Manual Switch 509SE/A 24V Relay Safety Thermostat Proof of Closure 2nd Stage Thermostat V2 V1 Fuse Capacitor 28 90” Sec. At 90 Seconds the Control Box Has Completed its Cycle