AERCO BMK 1.5 LN October 2012 - Manual (Page 49)

CHAPTER 4
INITIAL START-UP
PR1: 10/18//12 AERCO International Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288 Page 49 of 166
GF-120
OMM-0041 0E
Benchmark 1.5LN Low NOx Boiler
Installation, Operation and Maintenance Manual
Install the 16” W.C. manometer(s) as described in the following steps:
Turn off the main gas supply upstream of the unit. 1.
Remove the top panel and left or right side panel from the boiler to access the gas train 2.
components.
Perform the RSI regulator Safe Test as described in paragraph 4.3. If test shows a 3.
successful RSI ignition, proceed to the next step. If RSI ignition is not successful, follow
instructions in paragraph 4.3 before attempting Combustion Calibration.
To monitor the gas pressure on the downstream side of the SSOV during Combustion 4.
Calibration (paragraph 4.4), remove the 1/4” NPT plug from the leak detection ball valve
on the downstream side of the SSOV as shown in Figure 4-1.
Install a NPT-to-barbed fitting into the tapped plug port. 5.
Attach one end of the plastic tubing to the barbed fitting and the other end to the 16” 6.
W.C. manometer.
4.1.1 Accessing the Vent Probe Port
The unit contains a NPT plug on the exhaust manifold at the rear of the unit as shown in Figure
4-2. Prepare the port for the combustion analyzer probe as follows:
Remove the plug from the probe port on the top of the exhaust manifold. 1.
If necessary, adjust the stop on the combustion analyzer probe so that it will extend mid- 2.
way into the flue gas flow. DO NOT install the probe at this time.
EXHAUST
MANIFOLD
CONDENSATE DRAIN
CONNECTION
VENT PROBE
PORT
UNIT
FRAME
PARTIAL TOP VIEW
Figure 4.2: Analyzer Probe Hole Location
4.3 RSI REGULATOR SAFE TEST
The Benchmark 1.5LN contains a RSI regulator in the Regulated Staged Ignition (RSI) line of
the unit. The RSI regulator is calibrated prior to shipment, however the RSI system should be
safe tested prior to performing the Combustion Calibration Procedure to ensure it is working
properly. RSI regulator safe testing is performed as follows: