UTICA BOILERS SW3, Installation, Operation & Maintenance Manual

Page: 15 / 28

15
Table below is provided as guideline for initial start-up.
Final adjustments MUST be made using combustion
instruments as previously mentioned.
INStRuCtIONS tO OBtAIN pROpER OpERAtION OF thE BOILER-BuRNER uNIt
REILLO SETTINGS
Boiler
No.
Burner
No.
Air
Damp
Turb.
Setting
Pump
Pressure
Head
Nozzle
Furnished
SW3 BF3 4.00 2 150 PSI 6 SLOT .60 80 W
SW4 BF5 4.25 3 150 PSI 9 SLOT .85 80 W
SW5 BF5 5.50 4 150 PSI 9 SLOT 1.10 60 B
BECKETT SETTINGS
Boiler
No.
Burner
No.
Air
Damp
Pin
Pump
Pressure
Head
Nozzle
Furnished
SW3 AFII 100 3.25 3 140 PSI HLX 6 .60 45B
SW4 AFII 100 7.50 5 140 PSI HLX 6 .85 45B
SW5 AF 11 150 5.00 8 140 PSI HLX 6 1.10 45B
!
WARNING
Use only number 2 fuel oil. •
Do not use gasoline, crankcase drainings or •
any oil containing gasoline.
Do not attempt to start the burner when
•
excess oil has accumulated, when the unit
is full of vapor or when the combustion
chamber is very hot.
Check Safety Control Circuit after burner adjustments
have been made for satisfactory performance.
HIGH LIMIT CONTROL: A. remove cover and note
temperature setting. See figure 15 on page 15. With
burner operating, decrease this setting to minimum
point. When boiler water temperature exceeds this
set point, high limit switch will open, shutting off
power to oil burner and starting post purge cycle for
approximately 2 minutes. Return setting to desired
high limit point. Burner should restart.
PRIMARY CONTROL AND FLAME SENSOR: B.
To Check:
Flame failure - simulate by shutting off oil supply •
with hand valve while burner is on. 15 seconds after
flameout, safety switch locks out, ignition stops,
motor stops and oil valve closes. To restart, open oil
supply valve and reset safety switch.
Ignition failure - with burner off, unplug electrical
•
disconnect on burner harness. Disconnect one wire
from transformer and put wire nut on disconnected
wires . Restore power and run through start-up
procedure, safety switch should lockout as flame
failure. Reconnect wires after this procedure is
complete.
Power failure - Turn off main power supply switch
•
while burner is operating. When burner stops, restore
power and burner should start.
If operation is not as described as above, check wiring and
controls.