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GF-127
OMM-0052_0E
Aux Start On Dly
Failsafe Mode
*Analog Output
(See CAUTION at end of Table
3-4 )
Low Fire Timer
Setpt Limiting
Setpt Limit Band
Network Timeout
HI DB Setpt EN
Demand Offsert
Deadband High
Deadband Low
3.7 TUNING MENU
The Tuning Menu items in Table 3-5 are Factory set for each individual unit. Do not change
these menu entries unless specifically requested to do so by Factory-Trained personnel.
3.8 COMBUSTION CAL MENU
The Combustion Cal (Calibration) Menu items in Table 3-6 are used to vary the speed of
the unit's blower motor based on air temperature and air density at prescribed Air/Fuel
Valve positions (% open). This is accomplished by providing a DC drive voltage to the
motor which adjusts the rotational speed of the blower to maximize combustion efficiency
and ensure the unit conforms to the Nitrogen Oxide (NOx) and Carbon Monoxide (CO)
emissions specified in Chapter 4. The valve positions (%) and default drive voltages are
listed in Table 3-6.
Menu Item Display
Prop Band
Integral Gain
Derivative Time
Reset Defaults?
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
PR2: 04/22/13
Benchmark 2.0LN Dual-Fuel Low NOx Boiler
Operation and Maintenance Manual
Table 3-4: Configuration Menu (Continued)
0 sec.
Shutdown or Constant Setpt
Off, Setpoint, Outlet Temp,
2 sec.
0°F
5 Sec
0%
DO NOT CHANGE the Analog Output Menu Item from its
Default setting (Valve Position 0-10V).
Table 3-5: Tuning Menu
Available Choices or Limits
Minimum
0.0 min
Yes, No, Are You Sure?
CHAPTER 3: CONTROL PANEL OPERATION
120 sec.
Valve Position 4-20 mA,
Valve Position 0-10V
600 sec.
Enabled or Disabled
10°F
999 Sec
100%
0
0
0
*CAUTION!
Maximum
1°F
120°F
0.00
2.00
2.00 min
0 sec.
Shutdown
*Valve Position
0-10V
2 sec.
Disabled
5°F
30 Sec
30%
25
25
25
Default
70°F
1.00
0.00 min
No
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