Reznor RPB - Page 44

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RPB-IOM (06-22) 131782-B
MAINTENANCE—CONTINUED
Maintenance Procedures—Continued
Heat Exchanger Cleaning—Continued
2. Clean heat exchanger inner surfaces (combustion gas side):
a. Remove burner rack assembly in accordance with Burner Rack Maintenance section.
b. Remove heat exchanger V-baffles (see Figure 26):
(1) Remove ends of flue gas collection box.
(2) On control side of furnace, remove venter assembly and flue outlet duct to gain access to collection box end.
(3) For unit sizes 125–300, remove screw that secures one tube baffle retaining angle on each inside wall of
collection box and remove angle.
(4) For unit size 400, remove inner baffle from flue collection box: on control side, align inner baffle with slot
in collection box edge and pull inner baffle until it clears heat exchanger. Remove screw at each end and
slide flue diverter out of furnace.
(5) Pull V-baffles out of heat exchanger.
c. Clean inner surfaces using furnace brush or piece of heavy wire to which piece of steel wool is attached. Scrub
tube walls to remove any accumulated dust, rust, and/or soot.
d. Clean V-tubes and reassemble heat exchanger.
e. Install burner rack assembly in accordance with Burner Rack Maintenance section.
3. Check furnace for proper operation.
Figure 26. Heat Exchanger V-Baffles Removal