Operator’s Manual 2023 Rev C p/n 2023
8
03
Installation
T855 / T1055 VENT HOLES
OTEE:
N
Due to multiple bracket configurations
that are used by installers across the
country our T855 and T1055 blowers have
1/8" threaded NPT vent holes. Vent plugs
are not supplied with the blower.
If you choose to place plugs into vent holes to keep
foreign matter out of the units, you can purchase
HK 1/8-27 NPTF 7/8 Taper Flush Socket Pressure
Plug part # 1181142 from Fastenal or similar style
plugs from your local auto parts store. Another
option, depending on mounting bracket space, is
to use 90° elbows with or without flexible tubing.
If you choose to use vent plugs, then follow the
subsequent instructions. The exact plug location
will vary based on the mounting position.
The image below shows one option for the vent
hole locations on a horizontal airflow mount.
Figure 3-2 – Mounting Configuration
In this mounting configuration (
See Figure 3-2
)
the four holes (two are shown and two are on the
opposite side top) could have plugs added to them.
This would leave the four holes on the bottom of
the unit open or 90° 1/8" NPT elbows that face
down.
Four vent holes should always be open to air. You
can plug all the holes on the bracket side, then use
four 90° elbows on the non-bracket side (horizontal
mount). Or you can plug two on each end plate at
the top side and leave two on each end plate at the
bottom open.
CAUTION
!
Never plug all the vent holes or serious damage to
seals and bearings will result. Four vent holes (two
per side or all four on one side) must always be open.
Figure 3-3 – Alternate plug configuration: Horizontal
mount with holes plugged on the bracket side
Figure 3-4 – Alternate plug configuration: Horizontal
mount with street elbows
