Trane CSRA025FAF0, Installation Operation & Maintenance

Page: 68 / 83

68 CSRA-SVX02A-EN
System Start-Up
Verifying Proper Refrigerant Charge
1. Attach a set of service gauges onto the suction line and liquid line gauge
ports for each circuit. Refer to Figure 23 for the various compressor loca-
tions.
2. 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 CGAF-PTG for the SERVICE TEST
screens and programming instructions.
3. Use Table 10 to program the following system components for the num-
ber 1 refrigeration circuit by scrolling through the displays;
Chilled Solution Pump (On)
All Compressors for each circuit (On)
Condenser Fans for each circuit (On)
Hot Gas Bypass (Disabled, if applicable)
Low Ambient Dampers (100%, if applicable)
4. 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.
WARNING
Rotating Components!
During installation, testing, servicing and troubleshooting of this product
it may be necessary to check 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 when exposed to rotating components could result in
death or serious injury.
Make sure all personnel are standing clear of the unit before proceeding.
The programmed components will start when the TEST START time
designated in the previous step has elapsed.
5. Press the TEST START key to start the test. Remember that the delay
designated in step 4 must elapse before the system will begin to operate.
6. After all of the compressors and condenser fans for the number 1 circuit
have been operating for approximately 30 minutes, observe the operat-
ing refrigerant pressures and measure the system superheat and sub-
cooling.
The outdoor ambient temperature must be between 65°F and 105°F.
When the temperatures are outside of these ranges, refer to Table 10 for
the recommended refrigerant capacities.