Instructions / Assembly

26
7.1.10. Heat Exchanger Removal
1. Shut water, gas and electricity off, close valves and
relieve pressure, then remove relief valve. Remove
side inspection panels.
2. Remove the (8) top jacket holding screws. Remove
the jacket top.
3. Remove the screws holding down the flue collector.
Remove the flue collector.
4. Remove upper in/out access panel.
5. Disconnect all electrical wiring from in/out header.
6. Remove temperature sensor from in/out header.
7. Disconnect flange nuts on In/Out header.
8. Lift heat exchanger straight up using caution not to
damage refractory.
9. Reverse above procedure to reinstall.
Figure 42. Spark to Hood Pilot
PILOT BRACKET SCREWS
Figure 43. Pilot Bracket Screws
7.1.11. Tube Cleaning Procedure
Establish a regular inspection schedule, the frequency
depending on the local water conditions and the severity
of service. Do not let the tubes clog up solidly.
NOTE: Please remove heat exchanger from heater prior to
reaming or removing debris.
Clean out deposits over 1/16" (0.16cm) in thickness. Use
the Tube Cleaning Kit #052871F to ream the tubes as
necessary. After reaming, mount the wire brush in place
of the auger and clean out debris remaining in the tubes.
Another method is to remove the heat exchanger, ream
tubes and immerse heat exchanger in non-inhibited de-
scale solvent for severe scale build-up.
7.1.12. De-sooting Procedure
AA
CAUTION: Soot may be combustible. Wet sooted
surfaces completely prior to cleaning. Do not use steel
wire brush.
Soot will clog areas between ns and cause eventual
tube failure. Any sign of soot at the base of the burners or
around the outer jacket indicates a need for cleaning.
1. Remove top and flue collector from cabinet.
2. Remove burner tray.
3. Remove heat exchanger from the heater and wash
with a garden hose, making sure soot is removed
from spaces between fins.
4. Reverse above procedure to reinstall.
NOTE: In extreme cases it may be necessary to do high-
pressure cleaning at a local car wash. DO NOT WIRE
BRUSH.
Extension
Pieces (2)
Auger
with Carbide Tip
Wire Brush
Figure 44. Tube Cleaning Kit
7.1.13. Replacement Parts
NOTE: When ordering parts, it is important that the
heater model number, serial number, and type of gas are
specied.
Any part returned for replacement under standard
company warranties must be properly tagged with a
return parts tag, completely lled in with the heater serial
number, model number, etc., and shipped to the Company
freight prepaid.
If determined defective by the Company and within
warranty, a like part or equal substitution will be returned,
freight collect. Credit will not be issued.
MANUFACTURER:
2151 EASTMAN AVENUE
OXNARD, CA 93030