Benchmark 5000-6000 Operation & Maintenance Manual
SECTION 2: OPERATION
OMM-0118_B
•
GF-203
•
5/9/2019
Technical Support
•
(800) 526-0288
•
Mon-Fri, 8 am - 5 pm EST Page 23 of 148
2.7 TUNING Menu
The
Tuning
menu items in Table 2-5 are Factory set for each individual unit. Do not change
these menu entries unless specifically requested to do so by factory-trained personnel.
TABLE 2-5: TUNING Menu
MENU ITEM DISPLAY
AVAILABLE CHOICES OR LIMITS
DEFAULT
Minimum
Maximum
1
Prop Band
1°F (0.55
°
C)
120°F (66
°
C)
70°F (38.5
°
C)
2
Integral Gain
0.00
2.00
1.00
3
Derivative Time
0.0 min
2.00 min
0.0min
4
Warmup Prop Band
1°F (0.55
°
C)
120°F (66
°
C)
95 °F (52
°
C)
5
Warmup Int Gain
0.00
2.00
0.50
6
Warmup PID timer
0 sec.
240 sec.
20 sec.
7
Reset Defaults?
Yes, No, Are You Sure?
No
2.8 COMBUSTION CAL Menu
The
Combustion Cal
(Calibration) menu is protected by the level 2 password (
6817
) which must
be entered to view or change the menu items shown in Table 2-6. These menu items are used
to vary the speed of the unit’s blower motor based on air temperature and air density at
prescribed Air/Fuel Valve positions (% open). This is accomplished by providing a DC drive
voltage to the motor which then adjusts the rotational speed of the blower to maximize
combustion efficiency and ensure the unit conforms to the Nitrogen Oxide (NOx) and Carbon
Monoxide (CO) emissions specified in Section 4.5:
Combustion Calibration
of the
Benchmark
5000
– 6000 Installation and Startup Guide,
OMM-0117 (GF-202). The valve positions (%) and
default drive voltages are listed in Table 2-6.
TABLE 2-6: COMBUSTION CAL Menu
MENU ITEM DISPLAY
BENCHMARK 6000 *
BENCHMARK 5000 *
Minimum Maximum
Default
Minimum Maximum
Default
1
CAL Voltage 18%
1.70
2.70
2.20
1.9
2.5
2.05
2
CAL Voltage 30%
1.90
2.50
2.00
3.0
5.0
3.80
3
CAL Voltage 40%
1.90
3.40
2.25
3.8
5.5
4.50
4
CAL Voltage 50%
2.20
3.50
2.70
3.8
5.3
4.30
5
CAL Voltage 70%
3.20
4.40
3.95
4.0
6.0
4.80
6
CAL Voltage 100%
7.20
10.00
8.00
6.7
9.0
7.70
7
SET Valve Position
0%
100%
Variable
0%
100%
Variable
8
Blower Output
Monitor Blower Output Voltage
9
Set Stdby Volt
0
4.00 V
0/2.00 V
0
4.00 V
0/2.00 V
10 Oxygen Level
0%
25%
Variable
0%
25%
Variable
