Dual Fuel Switchover - Watts AERCO Benchmark OMM-0136 Operation And Service Manual

Benchmark Platinum-Edge [II]: Operation-Service Manual
SECTION 4 – INITIAL START-UP

4.6 DUAL FUEL SWITCHOVER

All Benchmark Dual Fuel models contain a fuel selector switch, located to the right of the I/O
board, behind the front panel.
I/O BOARD
and cover
Switchover from NATURAL GAS to PROPANE Instructions
1. Set the Edge Controller's Enable/Disable switch to Disable.
2. Close the external Natural Gas supply valve.
3. Open the external Propane gas supply valve.
4. Locate the Fuel Selector Switch (see Figure 4-10), behind the front door.
5. Set the Fuel Selector Switch from NAT GAS to PROPANE.
6. Replace the front door panel previously removed from the boiler.
Switchover from PROPANE to NATURAL GAS Instructions
1. Set the Edge Controller's Enable/Disable switch to Disable.
2. Close the external Propane Gas supply valve.
3. Open the external Natural Gas supply valve.
4. Locate the Fuel Selector Switch (see Figure 4-10), behind the front door.
5. Set the Fuel Selector Switch from PROPANE to NAT GAS.
6. Replace the front door panel previously removed from the boiler.
OMM-0137_E • GF-211 •
12/13/2019
Figure 4-10: Dual Fuel Switch
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
FUEL SELECTOR
SWITCH
Page 52 of 153