Watts Aerco Benchmark Series User Manual

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 60 of 146
HIGH Gas Pressure Test Instructions: BMK 3000 – 6000 ONLY
6. Open the external gas supply ball valve upstream of the unit.
7. On the Controller, go to: Main Menu  Diagnostics  Manual Run 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 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 – BMK 3000
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)

Watts Aerco Benchmark Series Specifications

General

Brand	Watts
Model	Aerco Benchmark Series
Category	Boiler
Language	English