SAFETY DEVICE TESTING
6-6
6.11 IGNITION SWITCH OPEN DURING
IGNITION
The Ignition Switch (and the Purge Switch) is
located on the Air/Fuel Valve. To check the
switch, proceed as follows:
1. Set the unit’s
ON/OFF
switch to the
OFF
position.
2. Place the unit in Manual Mode and set the
valve position between 25% and 30%.
3. Remove the Air/Fuel Valve cover (Figure
6-5) by rotating the cover counterclockwise to
unlock and lift up to remove.
4. Remove one of the two wires (#169 or #170)
from the Ignition Switch (Figure 6-6).
TO
BLOWER
STEPPER
MOTOR
DIAL
AIR
IN
5. Initiate a unit start sequence.
6. The unit should begin its start sequence and
then shut down and display
IGN SWITCH
IGNITION
POSITION
SWITCH
Figure 6-6
PURGE
POSITION
SWITCH
OPEN DURING IGNITION.
7. Replace the wire on the Ignition Switch and
press the
CLEAR
button. The unit should
restart.
Figure 6-5
Air/Fuel Valve Cover Location
Air/Fuel Valve Purge and Ignition Switch
Locations
6.12 SAFETY PRESSURE RELIEF
VALVE TEST
Test the safety Pressure Relief Valve in
accordance with ASME Boiler and Pressure
Vessel Code, Section VI.
Summary of Contents for Benchmark 3.0LN Series
Page 6: ...iv ...
Page 8: ...B ...
Page 42: ...INITIAL START UP 4 8 ...
Page 80: ...A 6 ...
Page 84: ...B 4 ...
Page 86: ...C 2 APPENDIX C ...
Page 93: ...APPENDIX F APPENDIX F F 1 ...
Page 94: ...APPENDIX F F 2 ...
Page 95: ...APPENDIX F F 3 ...
Page 96: ...APPENDIX F F 4 ...
Page 97: ...APPENDIX F F 5 ...
Page 98: ...APPENDIX F F 6 ...
Page 99: ...APPENDIX F F 7 66034 ...
Page 100: ...APPENDIX F F 8 ...
Page 101: ...APPENDIX F F 9 ...
Page 102: ...APPENDIX F F 10 ...
Page 103: ...APPENDIX F F 11 ...
Page 104: ...APPENDIX F F 12 ...
Page 105: ...APPENDIX F F 13 ...
Page 106: ...APPENDIX F F 14 ...
Page 107: ...APPENDIX G APPENDIX G G 1 ...
Page 108: ...APPENDIX G G 2 ...
Page 109: ...APPENDIX G G 3 ...
Page 110: ...APPENDIX G G 4 ...
Page 111: ...APPENDIX G G 5 ...
Page 112: ...APPENDIX G G 6 ...
Page 113: ...APPENDIX H APPENDIX H H 1 ...
Page 114: ...APPENDIX H H2 ...
Page 115: ...APPENDIX H H 3 ...
Page 116: ...APPENDIX H H 4 ...
Page 117: ...APPENDIX H H 5 ...
Page 118: ...APPENDIX H H 6 ...
Page 119: ...APPENDIX H H 7 ...
Page 120: ...APPENDIX H H 8 ...
Page 122: ...APPENDIX I I 2 ...
Page 126: ...NOTES ...
