Benchmark Platinum-Edge: Operation-Service Manual
SECTION 4 – INITIAL START-UP
OMM-0137_D • GF-211
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7/16/2019
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Figure 4-1e: Port Location for Combustion Calibration – BMK 5000-6000
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.
Figure 4-2: Analyzer Probe Port Location (BMK 1500 shown)
PRIMARY HOT
WATER INLET
ANALYZER PROBE
PORT
CONDENSATE DRAIN
DRAIN VALVE
TO AIR/FUEL
VALVE
HIGH GAS PRESSURE SWITCH
MANUAL
SHUT-OFF
VALVE
UPSTREAM LEAK
DETECTION BALL VALVE
GAS PORT
(Install manometer here for
downstream
combustion
calibration reading)
DOWNSTREAM
SSOV WITH POC
GAS PORT
(Install manometer here for
upstream
combustion calibration
reading)
Alternative location for
manometer if hose
barb is preferred
LOW GAS
PRESSURE SWITCH
