Watts AERCO Benchmark OMM-0121 Operation And Maintenance Manual page 81

Benchmark 750-3000 Boiler Operation & Maintenance Manual
APPENDIX A: BOILER MENU DESCRIPTIONS
TABLE A-6: CALIBRATION MENU ITEM DESCRIPTIONS
See section 2-10 CALIBRATION Menu for a range of choices and the default values.
TABLE A-6: CALIBRATION Menu Item Descriptions
MENU OPTION
Stepper Fbk
1
Purge Timer
2
Post Purge Timer
3
4 IGN Position
Ign Pos Hold Tmr
5
FFWD Temp Disply
6
Outlet Tmp Dsply
7
8 Inlet Tmp Dsply
Valv Pos Out Dsp
9
Exhaust Tmp Dsp
10
Exhaust Safety
11
12 Flue Material
13 Exhst Fault Temp
14 Exhst Module Temp
15 Exhst Warn Temp
16 Exhst Tmp VP Adj
17 Exhst Adj Rate
18 VP Change Rate
19 VP Up Rate
20 VP Down Rate
21 Purge Blwr Offst
22 4-20mA Purge Pct
23 PWM In Adj
24 Analog In Adj
25 Flow In Adj
OMM-0122_D • GF-206 • 5/9/2019
Allows the Air/Fuel Valve stepper motor feedback current to be calibrated at
the 0% (fully closed) and 100% (fully open) positions. Verification can also
be accomplished at the 50% position.
Allows adjustment of the pre-ignition purge time.
Allows adjustment of the purge time when a unit shuts down.
Allows adjustment of the valve position (Fire Rate) during the ignition
sequence.
Enabled or Disabled.
Enabled or Disabled.
Enabled or Disabled.
Enabled or Disabled.
Enabled or Disabled.
Enabled or Disabled.
Select flue material: PVC, Polypropylene, or stainless
Fault threshold temperature
Decreases Valve Position to lower exhaust temperature.
Flue temperature high warning
VP adjust value
VP adjust rate
Allows adjustment of the Valve Position (Fire Rate) increase rate when
raising the Valve Position. VP Up Rate is defined as Seconds per Step.
Allows adjustment of the Valve Position (Fire Rate) decrease rate when
lowering the Valve Position. VP Down Rate is defined as Seconds per Step.
Allows adjustment of the blower speed (Blower Output Voltage) during the
Purge cycle.
Allows adjustment of the blower speed (Blower Output Voltage) during the
Purge cycle when using an Emerson VFD Drive to control the Blower Motor.
Allows the Pulse Width Modulation (PWM) duty cycle to be adjusted from -
5.0% to +5.0% in 0.1% increments.
Allows adjustment of the analog input from -5.0% to +5.0%.
Allows adjustment of the water Flow Rate Input from
-5.0% to +5.0%.
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DESCRIPTION
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