AERCO BMK 1.5 LN July 2011 - Manual (Page 46)

CHAPTER 4: INITIAL START-UP
Page 46 of 152 PR2: 05/09/12
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
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.
Figure 4-3: Observation Port Location