Unit Startup
RT-SVX24J-EN
117
key to display the first service screen. Refer to the
latest edition of the appropriate programming
manual for applications for the SERVICE TEST
screens and programming instructions.
4.
Use
Table 37, p. 110
to program the following system
components for operation by scrolling through the
displays:
Exhaust Fan,
Exhaust Dampers (100% Open, if applicable),
Outside air dampers (100% Open),
Variable Frequency Drive (100%, if applicable),
RTM Occ/Unocc Output (Default)
5.
Once the configuration for the components is
complete, press the NEXT key until the LCD displays
the “Start test in __Sec.” screen. Press the
+
key to
designate the delay before the test is to start.
This
service test will begin after the TEST START
key is pressed
and the delay designated in this step
has elapsed. Press the ENTER key to confirm this
choice.
6. Press theTEST START key to start the test. Remember
that the delay designated in step 5 must elapse before
the fans will begin to operate.
7.
With the exhaust dampers open and the exhaust fan
operating at full airflow capability, measure the
amperage at the exhaust fan contactor. If the
amperage exceeds the motor nameplate value, the
static pressure is less than design and airflow is too
high. If the amperage is below the motor nameplate
value, static pressure may be too high and CFM may be
too low. To determine the actual CFM (± 5%);
a. Measure the actual fan RPM
b. Calculate the Theoretical BHP
Actual Motor Amps X
Motor HP
Motor Nameplate Amps
Use appropriate figures beginning with
Figure 71, p. 118
to
calculate a new fan drive if the CFM is not at design
specifications.
8. Press the STOP key at the Human Interface Module in
the unit control panel to stop the fan operation.
TRAQ™ Sensor Airflow Measurement
(Optional with all units equipped with an
economizer)
1.
Open the Human Interface access door, located in the
unit control panel, and press the SERVICE MODE key to
display the first service screen. Refer to the latest
edition of the appropriate programming manual for
applications for the SERVICE TEST screens and
programming instructions.
2. Use
Table 37, p. 110
to program the following system
components for Economizer operation by scrolling
through the displays;
Supply Fan (On)
Outside air dampers (Selected % Open)
Variable Frequency Drive (100% Output, if applicable)
RTM Occ/Unocc Output (Unoccupied)
Outside Air CFM Setpoint
Outside Air Pre-Heater Operation (if applicable)
3. Once the configuration for the components is
complete, press the NEXT key until the LCD displays
the “Start test in __Sec.” screen. Press the
+
key to
designate the delay before the test is to start.
This
service test will begin after theTEST START key
is pressed
and the delay designated in this step has
elapsed. Press the ENTER key to confirm this choice.
4. Press theTEST START key to start the test. Remember
that the delay designated in step 3 must elapse before
the fans will begin to operate.
5. With the unit operating in the “TEST MODE”, the
amount of outside air flowing through the TRAQ
sensor can be viewed by switching to the “STATUS
MENU” screen “OA CFM.
6. Scroll to the “ECONOMIZER ENABLE/ECONOMIZER
POSITION” screen by pressing the “NEXT” key and
read the corresponding damper opening percentage
(%).
7.
Press the STOP key at the Human Interface Module in
the unit control panel to stop the unit operation.
WARNING
Live Electrical Components!
During installation, testing, servicing and
troubleshooting of this product, it may be necessary to
work with live electrical components. Have a qualified
licensed electrician or other individual who has been
properly trained in handling live electrical components
perform these tasks. Failure to follow all electrical
safety precautions when exposed to live electrical
components could result in death or serious injury.
