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Benchmark 750-3000 Boiler Operation & Maintenance Manual
SECTION 2: OPERATION
OMM-0122_D
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GF-206
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5/9/2019
Technical Support
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(800) 526-0288
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Mon-Fri, 8 am - 5 pm EST Page 29 of 164
2.10 CALIBRATION MENU
The Calibration menu is used by factory trained service personnel to adjust or reset the
parameters listed below.
A full description of each item appears in Appendix A-6.
TABLE 2-10: CALIBRATION Menu
MENU ITEM DISPLAY
AVAILABLE CHOICES OR LIMIT
DEFAULT
Minimum
Maximum
1
Stepper Fbk
Cal 0%, Verify 50%, Cal 100%
Cal 0%
2
Purge Timer
5 sec.
60 sec
Depends on unit type/size
3
Post Purge Timer
0 sec.
60 sec.
0 sec.
4
IGN Position
5%
60%
Depends on unit type/size
5
Ign Pos Hold Tmr
0 sec.
60 sec.
0 sec.
6
FFWD Temp Disply
Enabled or Disabled
Disabled
7
Outlet Tmp Dsply
Enabled or Disabled
Disabled
8
Inlet Tmp Dsply
Enabled or Disabled
Disabled
9
Valv Pos Out Dsp
Enabled or Disabled
Enabled
10
Exhaust Tmp Dsp
Enabled or Disabled
Disabled
11
Exhaust Safety
Enabled or Disabled
Enabled
12
Flue Material
PVC,CPVC; PolyPro; Stainless
PVC,CPVC
13
Exhst Fault Temp
100 °F
500 °F
200 °F
14
Exhst Module Temp
100 °F
500 °F
190 °F
15
Exhst Warn Temp
100 °F
500 °F
180 °F
16
Exhst Tmp VP Adj
0
10
5
17
Exhst Adj Rate
1
600
30
18
VP Change Rate
5
600
25
19
VP Up Rate
0.5
60.0
Depends on unit type/size
20
VP Down Rate
0.5
60.0
Depends on unit type/size
21
Purge Blwr Offst
-1.0
8.0
Depends on unit type/size
22
4-20mA Purge Pct
60%
100%
70%
23
PWM In Adj
-5.0%
5.0%
0.0%
24
Analog In Adj
-5.0%
5.0%
0.0%
25
Flow In Adj
-5.0%
5.0%
0.0%
26
Supply Gas Pressure In Adj
-5.0%
5.0%
0.0%
27
Gas Plate dp In Adj
-5.0%
5.0%
0.0%
28
mA Out Adj
-1.0 mA
1.0 mA
0.0 mA