SAFETY DEVICE TESTING
6-4
3. Close the manual gas shutoff valve located
between the Safety Shut-Off Valve (SSOV)
and the Air/Fuel Valve (see Figure 6-3).
6.8 AIR FLOW FAULT TESTS
These tests check the operation of the Blower
Proof Switch and Blocked Inlet Switch shown in
Figure 6-3.
1. Disable the blower output drive voltage as
follows:
(a) Press the MENU key until
CONFIGUR-
ATION MENU
is displayed.
(b) Press the
▲ arrow key until the
ANA-
LOG OUTPUT
function is displayed,
then press the
CHANGE
key.
(c) Press the
▼ arrow key until
OFF
is
displayed, then press the
ENTER
key.
2. Start the unit in the Manual Mode at a valve
position between 25% and 30%.
3. The unit should shut down and display
Figure 6-3
Manual Gas Shut-Off Valve Location
4. Set the
ON/OFF
switch to the
ON
position to
start the unit.
5. The unit should shut down after reaching the
Ignition cycle and display
FLAME LOSS
DURING IGN.
6. Open the valve previously closed in step 3
and press the
CLEAR
button.
7. Restart the unit and allow it to prove flame.
8. Once flame is proven, close the manual gas
valve located between the SSOV and the
Air/Fuel Valve.
9. The unit should shut down and display
FLAME LOSS DURING RUN.
10.Open the valve previously closed in step 8.
11.Press the
CLEAR
button. The unit should
restart and fire.
AIRFLOW FAULT DURING PURGE.
4. Re-enable the blower output drive voltage by
performing the following steps:
(a) Press the MENU key until
CONFIGUR-
ATION MENU
is displayed.
(b) Press the
▲ arrow key until the
ANA-
LOG OUTPUT
function is displayed,
then press the
CHANGE
key.
(c) Press the
▲ arrow key until
VALVE
POSITION 0-10V
is displayed, then
press the
ENTER
key.
5. Once the unit has proved flame, turn off the
blower by going to the Configuration Menu,
Analog Output
menu item and select
OFF
.
6. The Blower Proof Switch will open and the
blower should stop. The unit should shut
down and display
AIRFLOW FAULT
DURING RUN
.
7. Go to the Configuration Menu,
Analog Output
item and select
Valve Position 0-10v
.
8. Press the
CLEAR
button. The unit should
restart.
9. Next, check the Blocked Inlet Switch by first
noting the current position of the Iris Air
Damper and then closing the Damper to
position 8.
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 ...
