Service manual

14
FCX INSTALLATION AND SERVICE MANUAL
START UP AND OPERATION - MAINTENANCE
To start the heating system, first make sure the room thermostat
is set at a high enough temperature to be closed so that any
external water circulating pumps are running. Turn the heating
system On-off switch to the “ON” position, and set the Heating
System Temperature Control thermostat to its maximum
temperature setting.
Turn the Summer-winter switch to “WINTER”. This will start
the internal circulating pump. After the start time delay set on
the oil burner (for the oil heater) has expired, the burner will
start. Reduce the Heating System Temperature Control
thermostat setting to make sure the heating system stops
properly when controlled by that thermostat. Increase the room
temperature thermostat setting to make sure that the circulating
pump(s) stop properly.
3 - ADJUSTING THE OIL BURNER
While the oil burner leaves the factory set at the recommended
settings, safe operation requires that the burner be checked
and adjusted by a qualified, licensed if required, oil service
technician using properly calibrated combustion test
equipment, vacuum and pressure gages. Run the unit long
enough at the burner maximum firing rate to make sure the
burner has reached a stable maximum operating temperature.
THEN, check the burner and adjust as follows:
Check to determine that the smoke spot number does not
exceed 0.5 with a Bacharach or equipment tester control.
Adjust the burner as required to be below this maximum.
Check to determine that the CO2 rate is from 11.5 - 13 percent
and that there is no CO production. Adjust the burner as required
to achieve this operating characteristic.
Measure the temperature of the flue gas exiting the unit to
determine that it does not exceed 250 degrees F (120 C).
Combustion inspection can be carried out on the unit through
the hole (item N) provided in the inspection port (item 7). Be
sure to replace the washer (item M) and the test point screw
(item 6) properly after inspection.
4 - CHECKING THE SAFETY DEVICES
At the time of start-up, check the safety and control devices
as follows:
Thermostats:
• Check to see that the thermostat bulbs are correctly
positioned in their housings. This is essential to provide
temperature sensing to facilitate burner shutdown in the
event of overheating,
Flame monitoring:
• Check to make sure that the burner shuts down properly
upon the deactivation or disconnection of the flame
monitoring device or interruption of the flow of fuel,
Safety Pressure Relief valve:
• Check the safety pressure relief valve in the heating circuit
for proper operation.
Factory Settings for the Burner
Burner PIONEER - 1
Oil pump pressure psig 165-170
Nozzle 0.50 80° AS
Firing Head Adjustment 1.75
Air shutter Adjustment 6-8
Fig. 43
IV. MAINTENANCE
It is recommend that the heating system and flue/combustion
air system be inspected and maintained annually by a qualified
technician.
DISCONNECT ALL ELECTRICAL CIRCUITS
BEFORE SERVICING THE UNIT CLOSE ANY
ISOLATION VALVES THAT MAY BE IN THE
WATER SYSTEM SHUT OFF THE FUEL OIL
SUPPLY IF SERVICING THE BURNER
To gain access to the inside of the unit, first remove the
control panel cover by grasping it on both sides and pulling
directly outward towards you and up. Remove any front panel
screw(s) and remove the front panel by pulling the top out
towards you and then lifting up to free the bottom from the
mounting pins. Remove the top cover by simply pulling it
up. Remove the electrical terminal block protection plate by
removing the screws in the rear and lifting. Remove the
control panel cover screws and remove the control panel
cover. The water can be bled from the unit by opening the
drain-cock on the base of the heating system shell using the
valve caps as the valve handle.
For more detailed burner instructions refer to the Heatwise or the Beckett
NX burner manual