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Series 3
The
1. ON/OFF switch
2. Control Pod cover fastener
3. Pressure/Temperature gauge
Displays boiler water pressure and outlet water temperature.
4. Jacket top rear panel
5. Control Pod cover
The
Control Pod cover is hinged to allow easy access to
the limit temperature sensor and boiler wiring.
6. Jacket side panels
jacket side panels are interchangeable.
7. Jacket rear panel, with insulation
8. Terminal strip
Electrical connections, both line and low voltage, connect to the
terminal strip.
9. Front section
10. Intermediate sections
11. Back section
12. Burner wire harness
Line voltage wiring to burner, terminated in a Molex connector
in the jacket cross tie (item 19). An additional harness connects
from the cross tie connector to the burner.
13. Burner door hinge bracket
The hinge bracket can be installed on either side to allow for right
or left-hand swing.
14. Swing-away burner door
The
burner door is hinged to provide easy access to the
boiler heat exchanger for inspection and cleaning.
15. Rotating observation port
The
observation port is designed to prevent soot from
depositing on the sight glass. During normal operation the sight
glass is located at the 12:00 position. To view the burner flame,
loosen the center mounting bolt and rotate so the sight glass is in
the 6:00 position.
16. Overfire pressure tapping
1/8" npt, with plug.
17. Jacket cross tie
18. Sensor wells
2
water boiler — Boiler Manual
water boiler – How it works . . .
Boiler limit temperature sensor and P/T gauge capillary and tem-
perature sensor are installed in the top of the rear section.
19. Outlet tapping
The boiler outlet water tapping is located in the top of the rear
section.
20. Return tapping
The boiler return tapping is located in the bottom of the rear
section.
21. Insulation blanket
22. Leveling legs
23. Boiler drain valve
24. Flue connection
boilers can be chimney or direct vented from the rear
flue opening.
25. Knockouts in jacket rear for electrical conduits
All electrical connections enter in conduits connected to these
knockouts.
26. Boiler relief valve
27. Temperature Limit/LWCO Control with Thermal
Targeting
TM
The Ultra Oil boiler is equipped with a Hydro-
level 3250 HydroStat®, LWCO and temperature limit control with
energy saving technology. The 3250 senses the presences of water,
water temperature and monitors calls for heat and activates the
boiler pump and circulator. The control logic will delay pump or
burner operation and adjust them for the target water tempera-
ture to optimize efficiency.
28. Burner, with cover
29. Jacket front panel
Part number 550-143-013/0621
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