Benchmark 750-3000 Installation & Startup Manual
SECTION 4
– INITIAL START-UP
OMM-115_D
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5/9/2019
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4.6.2 Switchover from PROPANE to NATURAL GAS
Switchover from
PROPANE to NATURAL GAS Instructions
1. Set the ON/OFF switch on the C-More Controller to the
OFF
position.
2. Close the external Propane Gas supply valves.
3. Open the external Natural Gas supply valves.
4. Refer to Figure 4-5 and locate the Fuel Selector Switch on the front of the unit.
5. Set the Fuel Selector Switch to the
NATURAL GAS
position. A
GAS PRESSURE FAULT
message will be displayed on the C-More Controller.
6. Clear the Gas Pressure Fault by pressing the
CLEAR
key.
7. Apply AC power to the boiler.
8. Press the
MENU
key once.
SETUP MENU
will be displayed.
9.
Press the ▲ arrow key once.
PASSWORD
will be displayed.
10. Press the
CHANGE
key.
PASSWORD
will begin to flash.
11.
Using the ▲ arrow key, increment the display and stop at
159
.
12. Press the
ENTER
key to store the displayed password.
13.
PASSWORD 1
will be displayed, indicating that the valid Level 1 password has been
stored.
14. Next, access the
Configuration
menu
by pressing the
MENU
key once.
15.
Using the ▲ and ▼ arrow keys, scroll through the
Configuration
menu
and stop at
FUEL
TYPE
.
16. Press the
CHANGE
key.
FUEL TYPE
will begin to flash.
17.
Press the ▼ arrow key.
NATURAL GAS
will be displayed.
18. Press the
ENTER
key to store the
Natural Gas Fuel
type.
19. Replace the front door panel previously removed from the boiler.
This completes the steps necessary to switch from PROPANE Gas to NATURAL GAS.