Appendix k, Benchmark 3.0 dual-fuel switchover instructions – AERCO BMK 3.0 LN Dual Fuel June 2010 User Manual
Page 137
APPENDIX K
K-1
BENCHMARK 3.0 DUAL-FUEL
SWITCHOVER INSTRUCTIONS
Prior to operating a Benchmark 3.0 Dual-Fuel Unit on either Natural Gas or Propane, a number
of checks and procedural steps must be performed prior to performing the initial start-up and
combustion calibration. These checks and procedures
• Installing the proper LogicStick in the Variable Frequency Drive (VFD)
• Adjusting the Max Fire Rate setting in the Configuration Menu of the C-More Control Box
Detailed instructions for performing these tasks are presented in the following Sections
SWITCHOVER FROM NATURAL GAS TO PROPANE
To switch from Natural Gas to Propane operation, proceed as follows:
1.
Refer to Figure K-1 and locate the Fuel Selector Switch on the front of the unit.
2.
Set the Fuel Selector Switch to the PROPANE position. A Low Gas pressure Fault
message will be displayed on the Control Box.
3.
Clear the Low Gas Pressure Fault by pressing the CLEAR key.
4.
Set the ON/OFF switch on the C-More /control Box to the ON position.
5.
Press the MENU key once. Setup Menu will be displayed.
6.
Press the ▲ arrow key once. Password will be displayed.
7.
Press the CHANGE key. Password will begin to flash.
8.
Using the ▲ arrow key, increment the display and stop at 159.
9.
Press the ENTER key to store the displayed password.
10.
Password 1
will be displayed, indicating that the valid Level 1 password has been
stored.
11.
Next, access the Configuration Menu by pressing the MENU key once.
12.
Using the ▲ and ▼ arrow keys, scroll through the Configuration Menu and stop at Max
Valve Position
.
13.
Press the CHANGE key. The Max Valve Position will begin to flash.
14.
Press the ▼ arrow key and decrease the Max Valve Position to 75%.
15.
Press the ENTER key to store the 75% Max Valve Position.
16.
Using the ▲ and ▼ arrow keys, scroll through the Configuration Menu and stop at Fuel
Type
.
17.
Press the CHANGE key. Fuel Type will begin to flash.
18.
Press the ▲ arrow key. Propane will be displayed.
19.
Press the ENTER key to store the Propane Fuel type.
20.
This completes the steps necessary to switch from Natural Gas to Propane operation.