Air Filter Cleaning & Replacement - Watts Aerco BENCHMARK 750 User Manual

Benchmark 750 – 1000 Boiler User Manual - INTERNATIONAL
7.8 AIR FILTER CLEANING & REPLACEMENT
The Benchmark Heating Boiler is equipped with an air filter (P/N 59138) which should be
cleaned and re-oiled every 12 months and replaced every 24 months. The air filter is located at
the air fuel valve inlet, as shown in Figure 7-7.
To inspect/replace the air filter, proceed as follows:
Air Filter Cleaning & Replacement Procedures
1. Set the ON/OFF switch on the control panel, to the OFF position. Disconnect AC power
from the unit.
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. Refer to Figure 7-7 and locate the air filter attached to the air/fuel valve inlet.
4. Using a flat-tip screwdriver or 5/16" nut driver, loosen the clamp securing the filter to the
inlet flange of the air/fuel valve. Remove the filter and clamp.
5. The filter may be cleaned in hot soapy water to remove oil and dirt. It should then be
thoroughly dried and then sprayed with a light coating of K&N® Air Filter Oil (or
equivalent specifically formulated for air filters) prior to reinstallation. Do NOT use WD-40.
6. Each replacement air filter is equipped with its own clamp. Therefore, simply install the
replacement air filter on inlet flange of the air fuel valve and tighten the clamp with a flat-
tip screwdriver or 5/16" nut driver.
7. Replace the top shroud on the unit and return unit to service use.
AIR FILTER
HOSE CLAMP
AIR FILTER
GAS TRAIN
ASSEMBLY
Page 94 of 170
11/03/2016
CHAPTER 7 – MAINTENANCE
Figure 7-7: Air Filter Location
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
BLOWER
AIR/FUEL VALVE
HEAT
EXCHANGER
MIRROR/VIEWPORT
OMM-0119_0A
GF-130-I