Boiler Installation and Owners Manual
10
LDJ991_E01_R03_2006.03
Models LDJ991 and LDJ991-10
Step 4: Level unit with bubble level (2) located
in face of unit and install a second 1-3/4" screw
through bottom hole (3); do not fully tighten.
Step 5: Check level of unit and tighten screws.
Step 6: Drill a 1/4" hole into the flue connection
pipe at a location between the boiler flue
connection and the barometic draft control.
Step 7: Straighten the aluminum tube (4)
included with the draft gauge kit.
Step 8: Uncoil the white rubber tubing and slip
the black rubber connection (5) over one end
of the aluminum tube. The other tube will just
hang and be left unconnected.
Step 9: At the opposite end of the double
tubing, split the two individual hoses apart for
about 1-1/2".
Step 10: At the top of the unit, connect the
hoses to it.
• Connect the all white hose to the port
marked HIGH (6).
• Connect the white hose with the red line to
the port marked LOW (7).
Step 11: Turn the ZERO SET (8) knob counter-
clockwise 2 to 3 turns.
Step 12: Loosen and remove the FILL (9) plug.
Step 13: Open the bottle of red gage oil (10)
and install nozzle top.
Step 14: Carefully pour oil into the FILL opening
until the red gage oil reaches ZERO (11).
Step 15: Re-install FILL plug.
Step 16: If the red gage oil is not exactly on
ZERO, adjust it by turning the ZERO SET knob
clockwise or counter-clockwise.
Step 17: Slide the aluminum tube about 2" to 3"
into the hole drilled into the flue.
Step 18: The draft gauge is now ready to be
used.
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