Model DP Oil-Fired Heater
Page 17
Figure 17. Heater's Temperature control.
When raising the temperature of a cold pool,
program the time clock to turn the pump off 23 hours
after the start time (i.e. If the start time is 2:00 PM,
then set the stop time at 1:00 PM.). This lets the filter
system and heater operate continuously until the water
reaches the temperature setting on the temperature
control. When that happens, the heater will
automatically shut off, but the filter pump will continue
running.
7.3 Temperature Control
The XL-3 heater has an ON/OFF switch located
on the right side of the heater (see Figure 16). This
switch must be in the ON position for the heater to
operate.
There is a temperature control located just above
the inlet/outlet header (see Figure 17). The
temperature control has a thermostat that will sense
the temperature of the water entering the heater and
will automatically turn the heater off when the water
has reached the temperature set by the control knob.
The control is not calibrated to show actual
temperature settings. The water in the pool must be
monitored with an accurate pool thermometer. When
the water in the pool reaches the desired temperature,
slowly turn the knob on the temperature control
counterclockwise until the burner shuts off.
Important:
The temperature controls cannot be
calibrated in the field. If the control is faulty, shut
down the heater, turn off the fuel supply and have a
qualified service technician replace the control.
7.4 Lighting the Heater
Before starting the oil burner, check the wiring to
make sure there are no loose connections. Check all
fuel line connections for tightness. Open the fuel
shutoff valves at the heater and the tank.
Caution
Do not try to light the burner if excessive oil has
accumulated in the firebox, or when the heater is full
of vapors.
ONLY A QUALIFIED SERVICE
TECHNICIAN MUST START THE OIL
BURNER FOR THE FIRST TIME AND AFTER
A PROLONGED PERIOD OF NON USE.
Check the operation of the burner. Make sure of
the proper air adjustment. The air shutter is factory set
for 12% C0
2
, but verify this after installation. When
starting the heater, follow these steps:
1.
Start the filter pump. Let it run for about five
minutes to free any trapped air.
2.
Set the thermostat well above the pool water
temperature.
3.
Turn the heater switch to the ON position. If the
burner motor does not start immediately, reset
the manual overload switches on the motor and
primary control. If the motor runs but the burner
fails to light, it may be necessary to bleed air
from the fuel line.
4.
When the heater is attached to a two-pipe
system, the fuel pump will automatically vent air
out of the fuel lines. If there is a lot of air, the
primary control may shut the burner down before
all the air has been purged. If this happens, wait
2 minutes, then press the reset button on the
primary control. Repeat this procedure until all
the air has been vented and the unit fires properly
(see NOTE below). If a one-pipe system is used,
it must be thoroughly purged of air using the vent
plug on the oil pump. See the instructions
included in the bag attached to the oil pump for
more details.
5.
On initial start-up and at the start-up after a
prolonged period of non use such as the
beginning of a new pool season also do the
following.
Check the initial air adjustment (see Fig. 18).
Normally, the bulk air band (A) and the end air
shutter (B) should be partially open. It is factory
set for both indoor and outdoor installations, but
check it again after completing the installation by
measuring the C0
2
, It should be 12% C0
2
with
zero smoke. Set a barometric draft control to
give .02" to .03" W.C. draft below the draft
control when the heater is installed indoors.
IMPORTANT:
If there is no ignition after three
reset attempts, stop. Check for accumulated oil in the
firebox. Remove all unburned oil with dry rags before
continuing the restart procedure. If there is no oil
accumulated, try three more resets. If there is still no
ignition, have a qualified oil service technician bleed
the fuel line and check for ignition problems.
When the heater does fire, oil which is in the
firebox will cause considerable smoke as it burns off.
Содержание DP3000
Страница 31: ...Model DP Oil Fired Heater Page 29 NOTES...
