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Manual Number 9019286 • Revision E, January 06, 2022
Vent Installation
It is recommended that the battery be operated with the vent tube in place when installed in
the aircraft. The vent port is 1.25 inches in diameter and has a protrusion just inboard around
the outside diameter to help prevent any disengagement of the attached vent tube.
There are two possible locations for the vent port to be configured. The default position is on
the front face of the unit in the upper left corner. The alternate location is on the left side of
the unit in the upper right corner. See Figure 3.2 for the vent location dimensions. Both
locations are eligible for certified installation. If the alternate location is desired, simply
remove the four screws and vent port from its original location, remove the four screws and
blank plate from the alternate location, switch the positions and reinstall. Visually verify that
the silicone gasket between the port or plate and the case fully covers the holes in the case
and has not squeezed completely out from under either part. Screw torque applied should be
approximately 5.5 in-lbs. See Figure 3.6 for a diagram of the vent and blank plate assembly.
A Vent Kit is available that includes a high temperature vent hose and hose attachment
hardware (see Section 3.3.2). Contact True Blue Power for potential alternatives. The vent
tube should be properly and securely attached to an aircraft exit point which would allow any
gaseous emissions to be vented overboard. The battery produces no emissions during
normal operation. Emissions will only be present in the event of a battery failure. Be sure to
locate the vent where emitted gases would not be directed toward any of the aircraft’s air
intake points.
Figure 3.6
Vent Location Option
Blank Plate
Gasket(s)
Vent Port
Summary of Contents for True Blue Power TB20 Series
Page 1: ...Revision E January 6 2022...
