Watts Aerco Benchmark Series User Manual

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 8 – MAINTENANCE
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 103 of 146
The flame detector should be inspected every 12 months and replaced every 24 months, or
sooner if damaged or warped. Note, it may be hot; allow the unit to cool sufficiently before
removing the flame detector.
Be sure to use the current model flame detector, included in the maintenance kit; some older
flame detectors are shaped differently and may not function properly.
This part and instructions are included in both 12 Month Maintenance Kit P/N 58025-01 (BMK
750 –3000) and P/N 58025-11 (BMK 5000 & 6000) and all BMK 750 – 6000 24 Month
Maintenance Kits.
8.5 O
2
SENSOR
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 BMK 750 – 3000 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.
Figure 8-3a: O
2
Sensor Mounting Location – BMK 750 & 1000
On the BMK 5000 & 6000, it is located on the burner’s rear plate, on the rear of the unit.
REAR OF UNIT
Figure 8-3b: O
2
Sensor Mounting Location – BMK 5000 & 6000
O
2
SENSOR
O
2
SENSOR
(P/N 61026)
GAS LINE TO
EXHAUST
MANIFOLD
AIR EDUCTOR
ASSY.
For AERtrim
(P/N 24508-TAB)
O
2
SENSOR
COVER
(Removed from
original position)

Watts Aerco Benchmark Series Specifications

General

Brand	Watts
Model	Aerco Benchmark Series
Category	Boiler
Language	English