Dual Fuel Switchover - Watts AERCO Benchmark BMK750 Operation And Service Manual
With edge (i) controller
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Also See for AERCO Benchmark BMK750:
- Operation and service manual (213 pages) ,
- Installation and start-up manual (62 pages) ,
- Design manual (12 pages)
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Benchmark with Edge [I]: Operation-Maintenance 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.
FUEL SELECTOR
SWITCH
Switchover from NATURAL GAS to PROPANE Instructions
1. Set the Edge [i] 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 [i] 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-0145_A99 • GF-218 •
Figure 4-10: Dual Fuel Switch
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
9/18/2019
Page 67 of 157
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