Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 4
– INITIAL START-UP
OMM-0137_J
• 12/20/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
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4.7 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.
Figure 4-10: Dual Fuel Switch
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.
4.8 OVER-TEMPERATURE LIMIT SWITCHES
The unit contains two configurable over-temperature limit controls, positioned
behind the unit’s
front panel, under the Edge Controller:
•
Automatic Reset
: If
the unit’s operating temperature exceeds the limit set on the switch,
the unit goes into an alarm mode and shuts the unit down. When the temperature falls
10 degrees below the limit, the unit automatically resumes operation without operator
FUEL SELECTOR
SWITCH
I/O BOARD
and cover