U.S. Boiler Company MPO - IQ, Инструкция по эксплуатации

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48
Ix. SYSTEM START-UP (continued)
D. START OIL BURNER.
1. Open oil supply to burner and vent fitting on fuel
pump.
2. Turn 'On' electrical service switch to boiler.
3. Press "I" Button on front of Primary Control, hold for
ten (10) seconds and release to reset Primary Control.
4. Allow burner to run until oil flows from vent fitting is
a SOLID stream without air bubbles for approximately
10 seconds.
NOTE: For Primary Control "Pump Priming Cycle"
details, see Paragraph J, No. 1., Step b.
5. Close vent fitting and burner flame should start immediately
after pre-purge is completed. Pre-purge prevents burner
flame until 15 seconds has elapsed after initial power is
applied to burner. During pre-purge the motor and igniter
will operate but the oil valve will remain closed. Refer
to Oil Primary Control Instructions for more details.
6. Adjust oil pressure.
a. When checking a fuel unit's operating pressure, a
reliable pressure gauge may be installed in either
the bleeder port or the nozzle port. Refer to Burner
Manufacturer's Manual for more details.
b. Locate oil pressure adjusting screw and turn screw to
obtain proper pump pressure, refer to Tables 15A thru
15C and 16 at rear of manual.
c. To check the cut-off pressure, deadhead a reliable
pressure gauge onto the copper connector tube attached
to the nozzle port. Run the burner for a short period
of time. Shut the burner off. The pressure should
drop and hold.
d. Remove the gauge and install bleeder port and/or
reconnect the nozzle port line.
E. ADJUST OIL BURNER WHILE OPERATING.
(flame present)
1. ADJUST DRAFT REGULATOR for a draft of zero
inches (water gauge) in the canopy (see Figure 17) after
chimney has reached operating temperature and while
burner is running. (At least five minutes)
See Tables 15A thru 15C and 16 at rear of manual for
details.
2. READJUST THE AIR SETTING on burner for a light
orange colored flame while the draft in the canopy is zero
inches water column ("w.c.). Use a smoke tester and
adjust air for minimum smoke (not to exceed #1) with a
minimum of excess air. Make final check using suitable
instrumentation to obtain a CO
2
of 11.5 to 12.5% with
draft of zero inches water column ("w.c.) (water gauge)
in canopy. These settings will assure a safe and efficient
operating condition. If the flame appears stringy instead
of a solid fire, try another nozzle of the same type. Flame
should be solid and compact. After all adjustments are
made recheck for a draft of zero inches water column
("w.c.) in the canopy. Replace plug at completion.
See Tables 15A thru 15C and 16 (at rear of this manual)
for details regarding the overfire pressure when baffles
are both installed and removed.
3. READJUST THE HEAD SETTING.
It might be necessary to move the head forward or back
one position at a time to optimize the smoke and CO
2
readings. Refer to Burner Manufacturer's Manual for
details.
4. TURN “OFF” BURNER and remove pressure gauge.
Install gauge port/bleeder plug and tighten. Start burner
again.
WARNING
Do not loosen or remove any oil line fittings while
burner is operating.
5. FLAME FAILURE
The Boiler Control operates the burner automatically. If
for unknown reasons the burner ceases to fire and the reset
button on the primary control has tripped, the burner has
experienced ignition failure. Refer to Oil Primary Control
Features, Paragraph J, Step 2 of this Section and Section
XIII, Trouble Shooting, Paragraph B.
F. CHECK FOR CLEAN CUT OFF OF BURNER.
1. AIR IN THE OIL LINE between fuel unit and nozzle
will compress when burner is on and will expand when
burner stops, causing oil to squirt from nozzle at low
pressure as the burner slows down and causing nozzle
to drip after burner stops. Usually, cycling the burner
operation about 5 to 10 times will eliminate air from the
oil line.
2. IF NOZZLE CONTINUES TO DRIP, repeat Paragraph
F, No. 1. If this does not stop the dripping, remove cut-
off valve and seat, and wipe both with a clean cloth until
clean, then replace and readjust oil pressure. If dripping
or after burn persist replace fuel pump.
G. ADJUST CONTROL SETTINGS
Program boiler control (high limit, etc.) to suit individual
requirements for the installation. Refer to Section X
"OPERATING" to locate and adjust the control.
H. SEQUENCE OF OPERATION
The Boiler Control display provides a status display,
"STA", shown in Table 9. Refer to Section X
"OPERATING" to locate and view the sequence.
I. CHECK THERMOSTAT OPERATION.
Raise and lower thermostat setting as required to start and
stop burner.