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- A quick start-up and run of an Aerco Benchmark 2.0 Low NOx boiler. 100,000 BTU minimum fire 2,000,000 BTU maximum fire 87% - 98.6% efficiency depending on EW.
- View and Download Aerco Benchmark 2.0 installation, operation & maintenance instructions manual online. Low NOx Gas Fired Boiler System. Benchmark 2.0 Boiler pdf manual download.
- Aerco Benchmark 2.0 Manual
- Aerco Boiler Benchmark 2.0 G-07-0084 Pdf
- Benchmark 2.0 Boiler Parts
- Aerco Benchmark 2.0 Parts List
- Benchmark Aerco
The AERCO Benchmark boiler is a true industry advance that meets the needs of today's energy and environmental concerns. Designed for application in any closed loop hydronic system, the Benchmark's modulating capability relates energy input directly to fluctuating system loads. The Benchmark's 20:1 turn down ratio and condensing capability offers. Benchmark 2.0 Gas Fired Boiler USER MANUAL Applicable for Serial Numbers G- 01-096 and above. Supply to the Aerco boiler and close the manual gas valve located before the unit. The installer is to identify the emergency shut-off device. INSTALLATION 2-1 Chapter 2 - INSTALLATION.
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TROUBLESHOOTING
TABLE 8-1. BOILER TROUBLESHOOTING – Continued
Aerco Benchmark 2.0 Manual
FAULT INDICATION
PROBABLE CAUSES
CORRECTIVE ACTION
![Aerco Boiler Benchmark 2.0 Pdf Aerco Boiler Benchmark 2.0 Pdf](https://s1.manualzz.com/store/data/000701198_1-1d7e035691d8ef5c157be1070addebb1.png)
(continued)
7. Defective Differential Pressure
Regulator
8. Carbon or other debris on Burner
7. Check gas pressure readings using gauge or manometer into
and out of the Air/Fuel Valve to ensure gas is getting to the
burner.
burner.
8. Remove the burner and inspect for any carbon or debris. Clean
and reinstall
FLAME LOSS
DURING RUN
1. Worn Flame Detector or cracked
ceramic.
Aerco Boiler Benchmark 2.0 G-07-0084 Pdf
2. Defective Differential Regulator.
3. Poor combustion calibration.
4. Debris on burner.
4. Debris on burner.
5. Blocked condensate drain.
1. Remove and inspect the Flame Detector for signs of wear or
cracked ceramic. Replace if necessary.
2. Check gas pressure readings using a gauge or manometer into
and out of the Air/Fuel Valve to ensure that the gas pressure
into and out of the valve is correct.
into and out of the valve is correct.
![Aerco Aerco](/uploads/1/2/4/8/124867083/728581029.png)
3. Check combustion calibration. Adjust as necessary.
4. Remove the burner and inspect for any carbon or debris. Clean
4. Remove the burner and inspect for any carbon or debris. Clean
Benchmark 2.0 Boiler Parts
and reinstall.
5. Remove blockage in condensate drain.
HEAT DEMAND
FAILURE
1. The Heat Demand Relays on the
Ignition/Stepper board failed to
activate when commanded
activate when commanded
2. Relay is activated when not in
Demand
1. Press CLEAR button and restart the unit. If the fault persists,
replace Ignition/Stepper (IGST) Board.
2. Defective relay. Replace IGST Board.
HIGH EXHAUST
TEMPERATURE
TEMPERATURE
1. Defective exhaust sensor.
2. Carboned heat exchanger due to
incorrect combustion calibration
1. Measure the actual exhaust temperature and continuity of the
Aerco Benchmark 2.0 Parts List
exhaust sensor. If the exhaust temperature is less than 475
o
F
and the exhaust sensor shows continuity replace the sensor.
2. If exhaust temperature is greater than 500
o
Benchmark Aerco
F, check
combustion calibration. Calibrate or repair as necessary.
HIGH GAS
PRESSURE
1. Incorrect supply gas pressure.
2. Defective SSOV Supply Regulator.
1. Check to ensure gas pressure at inlet of SSOV is 2 psig
maximum.
2. If gas supply pressure downstream of SSOV cannot be lowered,
to 4.8” W.C. (see para. 4.3, step 8), the SSOV Supply Regulator
may be defective. For Benchmark 2.0 Low NOx boilers
configured for De-Rated capacity (see para. 2.4.1), if gas supply
pressure downstream of the SSOV cannot be lowered to
may be defective. For Benchmark 2.0 Low NOx boilers
configured for De-Rated capacity (see para. 2.4.1), if gas supply
pressure downstream of the SSOV cannot be lowered to
8
-4
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