AERCO BMK 2.0 LN Natural Gas (SN G-11-1861 and above) - Manual (Page 52)

Chapter 4
Benchmark 2.0LN Low NOx Boiler
GF-123
Initial Start-Up Installation, Operation and Maintenance Manual OMM-0046_0E
Page 52 of 170 AERCO International Inc.● 100 Oritani Dr. ● Blauvelt, NY 10913. ● Ph: 800-526-0288 PR1 08/20/12
1. Close the main gas supply shut-off valve upstream of the unit.
2. Refer to Figure 4.1 and CLOSE the following valves in the unit’s gas train:
• RSI gas valve
• RSI Bleed-off Valve
• Manual shut-off valve to Air/Fuel Valve.
3. OPEN the main gas supply upstream of the unit.
4. Turn ON electrical power to the system.
5. Slowly OPEN the RSI Gas Valve.
6. Turn on the external gas supply to the unit.
7. Slowly open the RSI gas supply valve.
8. Start the boiler in MANUAL Mode.
9. Look into the observation port in the top head (see Figure 4-3) and ensure that you observe
the orange glow of the RSI flame during the ignition trial period.
10. Conduct at least three safe RSI ignitions while looking into the observation port in the top
head. Assure the igniter lights immediately with a strong orange flame after the Staged
Ignition Solenoid Valve opens, and then proceed with the Combustion Calibration procedure
described in Section 4.4.
NOTE
Clear any Flame Loss During Ignition messages during the tests by
pressing The CLEAR key on control panel.
IMPORTANT!
If you do NOT see the orange glow from the RSI ignition in the observation
port, refer to Paragraph 7.4.1.2 to calibrate the RSI regulator. Do NOT
proceed with Combustion Calibration until the RSI is igniting properly.
AIR/FUEL
VALVE
STAGED
IGNITION
ASSEMBLY
FLAME
DETECTOR
IGNITOR-
INJECTOR
BLOWER
BURNER
PLATE
BURNER
Figure 4-3: Observation Port Location
Observation Port