Accessing The Analyzer Probe Port - Watts AERCO Benchmark BMK5000 Operation And Service Manual

Benchmark Platinum-Edge [ii]: Operation-Service 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

4.2.3 Accessing the Analyzer Probe Port

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.
DRAIN VALVE
ANALYZER PROBE
Figure 4-2: Analyzer Probe Port Location (BMK1500 shown)
OMM-0137_J •
TO AIR/FUEL
VALVE
DOWNSTREAM
SSOV WITH POC
PORT
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12/20/2022
SWITCH
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
PRIMARY HOT
WATER INLET
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