AERCO BMK 2.0 LN Dual Fuel Nov 2010 - Manual (Page 30)

CONTROL PANEL OPERATING PROCEDURES
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 (Natural Gas) and Table 3-7
(Propane) 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 position (%) and default
drive voltages are listed in Tables 3-6 and 3-7..
Table 3-5. Tuning Menu
Available Choices or Limits
Menu Item Display Minimum Maximum Default
Prop Band 1°F 120°F 70°F
Integral Gain 0.00 2.00 1.00
Derivative Time 0.0 min 2.00 min 0.00 min
Reset Defaults? Yes, No, Are You Sure? No
Table 3-6. Combustion Cal Menu – Natural Gas (NEED DATA!)
Available Choices or Limits
Menu Item Display Minimum Maximum Default
CAL Voltage 20% .25 Vdc 10.0 Vdc 1.00 Vdc
CAL Voltage 30% .25 Vdc 10.0 Vdc 2.30 Vdc
CAL Voltage 45% .25 Vdc 10.0 Vdc 2.9 Vdc
CAL Voltage 60% .25 Vdc 10.0 Vdc 3.60 Vdc
CAL Voltage 80% .25 Vdc 10.0 Vdc 5.30 Vdc
CAL Voltage 100% .25 Vdc 10.0 Vdc 9.10 Vdc
SET Valve Position 0% 100% 0%
Blower Output Monitor Blower Output Voltage .00
Table 3-7. Combustion Cal Menu – Propane (NEED DATA!)
Available Choices or Limits
Menu Item Display Minimum Maximum Default
CAL Voltage 21% .25 Vdc 10.0 Vdc 1.10 Vdc
CAL Voltage 30% .25 Vdc 10.0 Vdc 1.95 Vdc
CAL Voltage 45% .25 Vdc 10.0 Vdc 3.00 Vdc
CAL Voltage 60% .25 Vdc 10.0 Vdc 3.00 Vdc
CAL Voltage 80% .25 Vdc 10.0 Vdc 4.45 Vdc
CAL Voltage 91% .25 Vdc 10.0 Vdc 8.20 Vdc
SET Valve Position 0% 91% 0%
Blower Output Monitor Blower Output Voltage .00
3-8