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63
Figure 46.
Removing compressor shipping hardware
Note:
Shims are located in the center,
and on the four corners, of each
set of compressors.
shims
O/A Sensor and Tubing Installation
An Outside Air Pressure Sensor is shipped with all
units designed to operate on variable air volume
applications or constant volume units with 100%
modulating exhaust with Statitrac.
On VAV systems, a duct pressure transducer and the
outside air sensor is used to control the discharge duct
static pressure to within a customer-specified
parameter. On CV and VAV units equipped with 100%
modulating exhaust with Statitrac, a space pressure
transducer and the outside air sensor is used to control
the exhaust fan and dampers to relieve static pressure
to within a customer-specified parameter, within the
controlled space.
Use the following steps and image to install the sensor
and the pneumatic tubing.
1. Remove the O/A pressure sensor kit located inside
the “ship with” item container. The kit contains the
following items:
a. O/A static pressure sensor with slotted
mounting bracket
b. 50 ft. 0.188 in tubing
c. Mounting hardware
2. Remove the two roof cap screws and install the
provided L mounting bracket as shown in the
figure.
3. Place the sensor mounting slotted bracket to the L
mounting bracket with the slot located to the top.
4. Install the sensor vertically to the slotted bracket
and secure it with provided bolt and nut.
5. Connect one end of factory provided tubing to the
top port of sensor and pass it through the two slots
in the mount and the other end to the port in the
base.
6. Secure the tubing with the mounting hardware
located in the ship with item container.
Figure 47.
Outside air sensing kit
Sensor
Sensor mounting
slotted bracket
0.188in OD tubing
L bracket
Sensor mounting
screws
Units with Statitrac
1. Open the filter access door and locate the Space
Pressure and Duct Supply Pressure control devices,
see the following image for specific location. There
are three tube connectors mounted on the left of
the solenoid and transducers.
2. Connect one end of the field provided 1/4" (length
50-100 ft.) or 3/8" (length greater than 100 ft.) O.D.
pneumatic tubing for the space pressurization
control to the bottom fitting.
3. Route the opposite end of the tubing to a suitable
location inside the building. This location should be
the largest open area that will not be affected by
sudden static pressure changes.
Содержание IntelliPak 2 Series
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