O/A Sensor And Tubing Installation - Trane IntelliPak 1 Installation, Operation And Maintenance Manual

Figure 18. Removing return fan assembly shipping hardware (20 to 75 ton)
ISO-2
Motor
Access
Door
Shipping Tie
Down (4)
40-75 Ton
ISO-4
Ground Strap
(Do Not Remove)
Wireless Communication Interface (WCI)
The wireless communication interface is located in the
return section of the unit when a return fan is not
installed. This provides wireless access to the building
through the return duct work.
O/A Sensor and Tubing
Installation
An Outside Air Pressure Sensor is shipped with all
units designed to operate on variable air volume
applications, units equipped with a return fan, or units
with 100% modulating relief 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 VAV units equipped with 100%
modulating relief with Statitrac, a space pressure
transducer (3U62) and the outside air sensor is used to
control the relief fan and dampers to relieve static
pressure to within a customer-specified parameter,
within the controlled space.
On units equipped with a return fan, a return pressure
transducer (3U106) is connected to the O/A sensor for
comparison with return plenum pressure.
Use the following steps and images to install the
sensor and the pneumatic tubing.
1. Remove the O/A pressure sensor kit located inside
the filter section. The kit contains the following
items:
a. O/A static pressure sensor with slotted
RT-SVX072A-EN
RETURN FAN (20 to 75 Ton)
TOP VIEW
SEE DETAIL A
2. Using two #10-32 x 1¾" screws provided, install the
3. Using the #10-32 x ½" screws provided, install the
4. Remove the dust cap from the tubing connector
5. Attach one end of the 3/16" O.D. factory-provided
Units with Statitrac
1. Open the filter access door and locate the Space
2. Connect one end of the field provided 3/16" O.D.
3. Route the opposite end of the tubing to a suitable
Shipping Tie Down (3)
25-30 Ton
1/2" Tie
Down Bolt
ISO-1
Remove &
Discard
Shipping Tag
Remove
& Discard
Shipping
Channel
Remove
& Discard
ISO-3
mounting bracket
b. 50 ft. 3/16" O.D. pneumatic tubing
c. Mounting hardware
sensor's mounting bracket to the factory-installed
bracket (near the filter section).
O/A static pressure sensor vertically to the sensor
bracket.
located below the sensor in the vertical support.
pneumatic tubing to the sensor's top port, and the
other end of the tubing to the connector in the
vertical support. Note that most of the tubing is not
needed.
N N o o t t e e : : Use only what is required and discard excess
tubing.
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.
pneumatic tubing for the space pressurization
control to the bottom fitting.
location inside the building. This location should be
I I n n s s t t a a l l l l a a t t i i o o n n
1/2" Lock
Washer
Remove &
Discard
1/2" Flat
Washer
Remove &
Discard
DETAIL A
39