System Start-up
RT-SVX35H-EN 79
6. Press the TEST START key to start the test. Remember
that the delay designated in the previous step 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 1K17. If the
amperage exceeds the motor nameplate value, the
static pressure is less than des
ign 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 Table 25, p. 104 - Table 29, p. 106 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 RT-SVP04*-EN (VAV) or RT-SVN05*-EN (CV) for
the SERVICE TEST screens and programming
instructions.
2. Use Table 20, p. 75 to progra
m the following system
co
mponents for Economizer operation by scrolling
through the displays;
• Supply Fan (On)
• Fresh 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 dis
plays
th
e “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.
4. Press the TEST START key to start the test. Remember
that the delay designated in the previous step must
elapse before the fans will begin to operate.
5. With the unit operating in the "TEST MODE", the
a
mount of outside air flowing through the Traq™
sensor can be view 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
Rotating Components!
During installation, testing, servicing and
troubleshooting of this product it may be necessary to
work with live and exposed rotating components. Have
a qualified or licensed service individual who has been
properly trained in handling exposed rotating
components, perform these tasks. Failure to follow all
safety precautions could result in rotating components
cutting
and slashing technician which could result in
d
eath or serious injury.
WARNING
Rotating Components!
During installation, testing, servicing and
troubleshooting of this product it may be necessary to
work with live and exposed rotating components. Have
a qualified or licensed service individual who has been
properly trained in handling exposed rotating
components, perform these tasks. Failure to follow all
safety precautions could result in rotating components
cutting
and slashing technician which could result in
d
eath or serious injury.
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