York J Series Manual page 13

Static Pressure Control Plastic Tubing
(Pneumatic Tubing)
Duct static transducers (all VAV and FLEXSYS units)
and any unit with an optional building pressure control
transducer, require pneumatic tubing to be field sup-
plied and installed. The "High" side of the respective
transducer must be routed to the location in the building
or ductwork where a constant pressure is desired. Duct
pressure transducer is located next to the supply VFD.
Duct Static Transducer
Plastic tubing (3/16" ID) must be run from the high
pressure tap of the transducer to a static pressure tap
(field supplied) in the supply duct, located at a point
where constant pressure is desired.
Building Pressure Transducer
Plastic tubing (3/16" ID) must be run from the high
pressure tap of the building static pressure transducer
to a static pressure tap (field supplied), located in the
conditioned space or return air duct at a point where
constant pressure is desired.
JOHNSON CONTROLS
Static Pressure Probe Installation
On units with duct static transducers (VAV units) and
any unit with an optional building pressure, a Static
Pressure Probe must be field installed at the top of the
rear corner post on the unit.
The factory supplied atmospheric pressure probe and
associated mounting hardware are shipped inside the
unit control panel. The hardware consists of a mounting
bracket and a short section of pneumatic tubing. The
pneumatic tubing must be field installed from a fac-
tory pressure tap (next to the mounting location for
the static pressure probe) to the atmospheric pressure
probe.
If the unit is equipped with both a building pressure
transducer and a duct static transducer, there will be two
pressure taps that are factory installed in the location
where the factory supplied atmospheric pressure probe
is to be mounted. A "tee" will be factory installed, and
both the duct static pressure transducer and building
pressure will be connected to the "tee" - both building
static pressure transducer and duct static transducer
will use the same factory supplied atmospheric pres-
sure probe.
FORM 100.50-NOM7 (808)
13
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