Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 5
– SAFETY DEVICE TESTING
OMM-0145_A99
• GF-218 • 9/18/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
81
of
157
HIGH Gas Pressure Test Instructions: BMK3000
– 6000 ONLY
7.
On the Controller, go to:
Main Menu
→
Diagnostics
→
Manual Mode
and then enable the
Manual Mode
control.
8.
Use the
+
(Plus) and
–
(Minus) controls to bring the unit up to 100%.
9.
Slowly increase the manifold gas supply pressure by turning the Gas Pressure Adjustment Screw in
the Downstream SSOV (Figure 5-2) while reading the CO level on the combustion analyzer. Adjust
the manifold pressure until the CO reading is
approximately 300 ppm
. Note the number of turns
you make, as you will turn it back to its original position in step 13, below.
10.
Take a reading of the manifold gas pressure. If the manifold pressure is
greater
than the maximum
calculated in step 3, then use the Gas Pressure Adjustment Screw to decrease the manifold
pressure until it is at the maximum allowed.
11.
Slowly turn the indicator dial on the High Gas Pressure switch until the unit shuts down due to a gas
pressure fault. This is the setpoint.
12.
Press the
RESET
button on the High Gas Pressure switch (see Figure 5-4, below).
13.
Readjust the manifold gas supply pressure to what it was before it was increased in step 9.
14.
Press the
CLEAR
button on the Edge [i] Controller to clear the fault.
15.
Fire the unit back up to insure gas pressure out of the SSOV is set as it was originally.
16.
Upon test completion, close the ball valve and remove the manometer fitting from the port, and then
turn the port screw clockwise till the port is closed.
17.
For Dual Fuel gas trains, repeat this procedure on the
Propane
gas train, starting with opening the
port on the
Propane
High Gas Pressure Switch, as shown in Figure 5-4b.
Figure 5-4a: HIGH Gas Pressure Test Components
– BMK3000 Shown
Alternative location
for manometer if hose
barb is preferred
TO
AIR/FUEL
VALVE
MANUAL SHUT-
OFF VALVE
HIGH Gas
Pressure Port
Install manometer
here for High Gas
Pressure test
LOW GAS
PRESSURE
SWITCH
HIGH GAS
PRESSURE
SWITCH
Alternative
HIGH Gas
Pressure Port
HIGH GAS
BALL VALVE
SSOV
NATURAL
GAS INLET
(P/N 22310 shown)
