RT-SVX36G-EN 11 7
Unit Start Up
3. 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 CV or VAV applications for the SERVICE TEST screens and
programming instructions.
4. Use Table 35, p. 108 to program the following system components for operation by scrolling
through the displays;
– Exhaust Fan
– Exhaust Dampers (100% Open, if applicable)
– Fresh 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 the TEST 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/return 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 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
Use Ta b le 4 1 - Ta ble 43 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 CV or VAV applications for the SERVICE TEST screens and
programming instructions.
2. Use Table 35, p. 108 to program the following system components for Economizer operation
by scrolling through the displays;
– Supply Fan (On)
– Fresh Air dampers (Selected % Open)
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.
Actual Motor Amps
X Motor HP
Motor Nameplate Amps
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