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for Technical Support
5.3 Draft Gauge Installation (included with some packages)
The draft gauge is a precision inclined-vertical manometer. Permanently installing the
EnergyLogic draft gauge allows you to monitor the draft during operation.
1. Mount and level the draft gauge to the boiler vessel
using the screws provided with the gauge (refer to
figure). Note: There is a level built into the gauge.
Mount on an insulated panel or other area that will
not be exposed to direct or radiant heat.
2. Turn Zero Adjustment Knob clockwise until it stops,
then turn counterclockwise (3) full turns to allow for
future adjustment.
3. Remove gauge Fill Plug and open red fluid bottle
provided with gauge.
4. Slowly pour small amounts of fluid (typically 1/4 of
the bottle is used) into “fill” opening until it reaches
zero on the scale. Replace the fill plug. Minor
adjustments can be made by adjusting the knob to
zero the gauge.
5. Attach the one end of the clear plastic tube
(packaged with the gauge) to the draft gauge port
labeled “Low” at top of the gauge. Note: By doing
this, the negative readings will now read positive on
the gauge scale. This is to take advantage of the
larger scale on the positive side.
6. Locate the draft gauge probe, which is a piece of
stainless steel tubing with a “U” bend in it. Thread a
1/4 inch barbed fitting (included in the gauge
packaging) to the draft gauge probe. Note: There is extra hardware in the gauge
packaging that is not used.
7. Attach the free end of the clear plastic tube to the 1/4 in. barbed fitting.
8.
Confirm that the gauge is reading “zero” with the probe in your hand, in still air. If not,
adjust the gauge to read zero using the zero adjust knob.
9.
Insert the open end of probe into barometric damper tee draft gauge probe hole as
shown in figure below.
Do not route the plastic tubing near non-insulated
parts of the vessel, breech or flue as heat will damage the tubing. If necessary, provide
protection to the tubing.
Probe Hole
Screws
Insert Probe
Final Position
Keep plastic
tubing away from
hot surfaces!
Draft Gauge Probe Installation
“Low” port
Draft
Gauge
Zero
Adjust
Knob
Fill Plug
