Watts AERCO Benchmark OMM-0121, Operation And Maintenance Manual, Page: 73 / 164

Benchmark 750-3000 Boiler Operation & Maintenance Manual
APPENDIX A: BOILER MENU DESCRIPTIONS
OMM-0122_D
•
GF-206
•
5/9/2019
Technical Support •
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 73 of 164
Appendix A: BOILER MENU ITEM DESCRIPTIONS
TABLE A-1: OPERATING MENU ITEM DESCRIPTIONS
See section 2-4 OPERATING Menu for a range of choices and the default values.
TABLE A-1: OPERATING Menu Item Descriptions
MENU OPTIONS DESCRIPTION
1 Active Setpoint
This is the setpoint temperature to which the control is set
when operating in the Constant Setpoint, Remote Setpoint or
Outdoor Reset Mode. When in the Constant Setpoint Mode,
this value is equal to the Internal Setpoint setting in the
Configuration Menu. When in the Remote Setpoint Mode, this
value is the setpoint equivalent to the remote analog signal
supplied to the unit. When in the Outdoor Reset Mode, this is
the derived value from the charts in Appendix E.
2 Outlet Temp
Displays the outlet water temperature.
3 Inlet Temp
Displays the inlet water temperature.
4
Air Temp
Air Temp is the air temperature at the input to the Air/Fuel
Valve. This reading is one of the parameters used to control
the Blower Motor speed.
5 Outdoor Temp
Outdoor temperature is displayed in ºF or ºC, only if outdoor
temperature sensor is installed and enabled.
6 Valve Position In
Desired input valve position. This would normally be the same
as the fire valve position shown on the bar graph (valve
position out) when the boiler is operating.
7 Valve Position Out Displays actual real time Valve Position.
8 FFWD Temp Displays BST header temperature
9 Exhaust Temp Displays the exhaust temperature in °F (default) or ºC.
10 Flame Strength Displays flame strength from 0% to 100%.
11
Min Flame Str Not Used
12
O2 Monitor Enables or disables the O2 Monitor.
13 Oxygen Level
Displays the real-time combustion oxygen (O
2
) level (%)
measured by the O
2
sensor.
14 Ignition Time
Displays the elapsed time between confirmation of gas valve
opening (POC) until a stable flame is detected.
15 SSOV Time to OPN
Displays the elapsed time between 120VAC being applied to
the Gas Valve and confirmation of gas valve opening (POC).
16 Spark Current Displays the current going to the ignition transformer.
17 Run Cycles Displays the total number of run cycles.
18
Run Hours
Displays total run time of unit in hours.
19 Fault Log Displays information on the last 20 faults.