Accessing The Analyzer Probe Port - Watts Aerco Benchmark BMK750 Operation And Service Manual

Benchmark with Edge [I]: Operation-Maintenance Manual
SECTION 4 – INITIAL START-UP
MANUAL
SHUT-OFF
VALVE
Alternative location for
manometer if hose
barb is preferred
GAS PORT
(Install manometer here for
downstream combustion
calibration reading)
Figure 4-1f: Port Location for Combustion Calibration – BMK5000-6000

Accessing the Analyzer Probe Port

4.2.3
Benchmark units contain a 1/4" NPT port on the side of the exhaust manifold, as shown in
Figure 4-2. Prepare the port for the combustion analyzer probe as follows:
Analyzer Probe Port Access Instructions
1. Refer to Figure 4-2 and remove the 1/4" NPT plug from the exhaust manifold.
2. If necessary, adjust the stop on the combustion analyzer probe so it will extend mid-way into the flue
gas flow. DO NOT install the probe at this time.
EXHAUST MANIFOLD
ANALYZER PROBE
Figure 4-2: Analyzer Probe Port Location – BMK750 & 1000 Shown
OMM-0145_D • GF-218 •
TO AIR/FUEL
VALVE
DOWNSTREAM
SSOV WITH POC
SWITCH
PORT
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
11/2/2020
HIGH GAS PRESSURE SWITCH
CONDENSATE DRAIN
UPSTREAM LEAK
DETECTION BALL VALVE
GAS PORT
(Install manometer here for
upstream combustion calibration
reading)
LOW GAS
PRESSURE SWITCH
AIR INLET
HOT WATER INLET
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