CHAPTER 3
OPERATION
PR1: 10/18//12 AERCO International Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
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Ph: 800-526-0288
Page 41 of 166
GF-120
OMM-0041 0E
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
Table 3-5: Tuning Menu
Available Choices or
Limits
Menu Item Display
Minimum
Maximum
Default
Prop Band
1°F
120°F
70°F
Integral Gain
0.00
2.00
1.00
Derivative Time
(if Unit Type = Boiler
0.00 min
2.00 min
0.00 min
Warmup Prop Band
Range = 1 - 120
95
Warmup Int Gain
Range = 1 - 200
50
Warmup PID Timer
Range = 1 - 240
20
Reset Defaults
Yes, No, Are You Sure
No
Table 3-6: Combustion Cal Menu
Available Choices or Limits
Menu Item Display
Minimum
Maximum
Default
CAL Voltage 16%
.25
8.20
1.80v
CAL Voltage 30%
.25
8.20
3.20v
CAL Voltage 45%
.25
8.20
3.70v
CAL Voltage 60%
.25
8.20
3.80
CAL Voltage 80%
.25
8.20
4.60
CAL Voltage 100%
.25
8.20
6.00
SET Valve Position
0%
100%
0%
Blower Output
Monitor Blower Output Voltage
.00
3.9 START SEQUENCE
When the Control Box
ON/OFF
switch is set to the ON position, it checks all pre-purge safety
switches to ensure they are closed. These switches include:
•
Safety Shut-Off Valve Proof of Closure (POC) switch
•
Low Water Level switch
•
High Water Temperature switch
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High Gas Pressure switch
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Low Gas Pressure switch
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Blower Proof switch
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Blocked Inlet switch