O 2 Sensor - Watts AERCO Benchmark BMK5000 Operation And Service Manual

Benchmark Platinum-Edge [ii]: Operation-Service Manual
SECTION 8 – MAINTENANCE
8.4 O SENSOR
2
The Lean Oxygen Sensor (P/N 61026) should be cleaned and inspected every 12 months. It is
not included in any of the 12- or 24-month maintenance kits.
On BMK750 – 5000N units, it is located on the burner plate at the top of the unit. It may be hot,
so allow the unit to cool sufficiently before removing or replacing the it.
O SENSOR
2
Figure 8-3a: O Sensor Mounting Location – BMK750 – 5000N (BMK750 shown)
2
On the BMK5000 & 6000, it is located on the burner's rear plate, on the rear of the unit.
O SENSOR
2
(P/N 61026)
GAS LINE TO
EXHAUST
MANIFOLD
Figure 8-3b: O
Lean O Sensor Maintenance Instructions
2
1. Set the ON/OFF switch on the Edge Controller to the OFF position.
2. Remove the top shroud from the unit by grasping the top handle and lifting straight up. This
will disengage the shroud from the four (4) pins in the side panels.
3. Disconnect the O
2
connector.
OMM-0137_J •
12/20/2022
REAR OF UNIT
Sensor Mounting Location – BMK5000 & 6000
2
sensor lead wire by pushing in on the release tab and pulling apart the
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
O SENSOR
2
COVER
(Removed from
original position)
AIR EDUCTOR
ASSY.
For AERtrim
(P/N 24508-TAB)
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