Harman Accentra 52i - Heat Exchanger Maintenance

Harman® • Accentra 52i Owner’s Manual_R8 • 2013 -___ • 07/1420 3-90-00574c
Figure 5.5
Removing the Center Medallion
1. Lift up on the 2 bottom corners of the medallion until it is
higher than the top of the ame guide.
2. Pull the bottom edge of the medallion front approximately
1 inch.
3. Pull downward on the corners of the medallion until the
top is released from the retainer that keeps the top aligned
when in place. Figure 5.4.
Note: The heat exchanger covers will tilt to the front when
the center medallion is removed.
Removing the Heat Exchanger Covers
1. Remove cleanout plate assembly by pulling up on the
latch located at the bottom right corner of rebox. Figure
5.5
2. Remove the heat exchanger cover by lifting it upward
about 1/2 inch and move the bottom edge front until it
sits at on the rebox bottom.
3. Rotate the right side of the heat exchanger toward the
door opening until you are able to remove the heat
exchanger from the rebox.
4. Tip the top of the heat exchanger toward the door
opening until it can be lifted up and out. Figure 5.5a
Lifting tab
Figure 5.4
Figure 5.5a
1
st
- UP ↑
2
nd
- OUT
3
rd
- DOWN ↓
Flame Guide
Latch
F. Heat Exchanger Maintenance
Cleaning the Heat Exchanger
With the Heat Exchanger covers removed you can now clean
the Heat Exchanger surface.
Using the scraper provided run the straight edge along the
at surface of the Heat Exchanger removing any carbon
deposits or ash build-up. Figure 5.6.
Figure 5.6
Figure 5.7
After the Heat Exchanger has been scraped, use the dust
brush supplied to remove any remaining y-ash from the Heat
Exchanger as well as other areas throughout the rebox.
Figure 5.7.
Scrape the heat exchanger free of Fly-Ash and carbon build-up
1.5”
38.1mm
Brush the rebox free of remaining Fly-Ash.