Model DP Oil-Fired Heater
Page 13
Heater Does Not Maintain the Desired Water
Temperature
1.
Is the temperature control set high enough?
2.
Is the filter cycle setting on the time clock long
enough to permit the heater to raise the
temperature?
3.
Is the heater the right size for the pool? See the
Installation instructions.
If these conditions are satisfactory, the heat
exchanger could be fouled, or the heater controls may
not be functioning properly. Call a service technician.
Burner Operates, But There is Smoke or
Pulsating Combustion
This is usually caused by improper combustion
adjustment, fouled heat exchanger or a fuel supply
problem. Call a service technician.
Pool Water Overheating
Turn the heater switch OFF and call a service
technician.
4B. Cleaning the Heating Exchanger
Caution
Black carbon soot on a dirty heat exchanger can,
under certain circumstances, be ignited by a
random spark or open flame. To prevent this from
happening, dampen the soot deposits with a wet
brush or fine water spray before servicing or
cleaning the heat exchanger.
Clean the heat exchanger annually, preferably at
the end of the swimming season. Clean as follows:
1.
Remove the heater top assembly and flue
collector.
2.
Remove the inspection hole cover (see Fig. 19).
3.
Use an ordinary kitchen brush to brush across the
top of the heat exchanger between the tube fins.
4.
Use a bottle brush to brush down between the
tube fins toward the firebox.
The ash can be softened for easier removal by
lightly dampening with a wet brush. Do not let water
get in the firebox.
5.
Reach through the inspection hole and brush
across the bottom of the tube fins using the
kitchen brush.
6.
Remove all dirt and soot from the firebox by
inserting a vacuum cleaner nozzle through the
inspection hole.
7.
Replace the flue collector and top assembly.
8.
For more thorough cleaning, remove the heat
exchanger completely and wash it with a garden
hose.
Caution
Be careful to avoid damaging the firebox material
when cleaning the heat exchanger or inspecting the
heater. Keep water out of the firebox. Be sure to
replace the gasket, inspection plug and retainer
when the cleaning or inspection is complete.
4C. Trouble-Shooting Guide
Introduction
A qualified oil burner technician should service
this equipment. Frequently, this service is available
through the fuel oil supplier.
Caution
Some of these procedures involve exposing the line
voltage circuit. There is considerable danger of
electric shock.
The XL-3 is an oil-fired pool heater designed to
burn No. 2 fuel oil or No. 2 diesel fuel. Do not use
other fuels. The burner assembly comes standard with
a two-stage pump. This allows the heater to be
installed a relatively long distance from the fuel tank.
Initial Checks
1 .
Is the oil burner connected to a one- or two-pipe
system? All units are. Factory set for one-pipe
systems. To convert a unit to a two-pipe system,
Figure 19. Inspection Hole Location.
