Carrier 39L Series Installation, Operation, And Start-up Instructions

Also see for 39L Series: Installation, Start-Up and Service Instructions

Carrier 39L Series Installation, Operation, And Start-up Instructions Manual pdf 103 page image

START-UPInitial CheckIMPORTANT: Do not attempt to start unit, even mo-mentarily, until the following steps have been com-pleted.1. Verify unit has been installed per the Installation, Start-Up, and Service Instructions shipped inside the unit.2. Verify that all auxiliary components (valves, sensors, etc.)have been installed and wired to the PIC control box.3. Verify that the motor starter and HOA switch have beeninstalled and wired.NOTE: HOA switch must be in OFF position.4. Check to be sure area around unit is clear of construc-tion dirt and debris.5. On VAV units, verify that the static pressure probe andassociated piping have been installed.6. Verify that:Chilled water valve is in its normal position.Hot water/steam valve is in its normal position.Outside-air damper is closed.Return-air damper is open.Inlet guide vanes are closed (VAV units).7. Set control configurations. Units are shipped with ap-plicable controls programmed to the default values shownin Table 16.8. Set unit set points. Units are shipped with the set pointdefault values shown in Table 17. If a different set pointis required, change as shown in the following example:KEYBOARDENTRYDISPLAYRESPONSE COMMENTSSETPOINT System set pointsOHSP 68.0 Present occupied heat set pointis 68.0OHSP 59.0 Key in 59 and press ENTR, displayshows new occupied heat set pointis 59OCSP 78.0 Present occupied cooling set pointis 78.0OCSP 70.0 Key in 70 and press ENTR, displayshows new occupied cooling setpoint is 70Unit is shipped with the NTFC, Demand Limit, Tem-perature Reset, Optimal Start, Occupied Heating, andFan Tracking functions disabled. If these functions aredesired, refer to Control Operation, Programming Func-tions section beginning on page 81.9. Check tightness of all electrical connections.10. Turn on control power by turning the ON/OFF switchlocated in the PIC control box to ON.11. Perform Quick Test to make sure controls are operatingproperly. See the following section.Quick Test — The Quick Test feature allows the servicetechnician to individually test all inputs and outputs of thecontrol system. See Tables 18-22.The test function operates the Quick Test diagnostic pro-gram. The test subfunctions energize the valves, dampers,and inlet guide vanes (VAV units).To start Quick Test, set HOA switch to OFF. Verify sup-ply fan stops. Quick Test does not operate if supply fan sta-tus is ON.A test can be terminated by pressing . Pressing af-ter a test has started advances the system to the next test.Once the next test is displayed you can start the test bypressing , advance past it by pressing , or back upby pressing . The unit remains in Quick Test untiland then are pressed. At that time the unitreverts to automatic control.If the keyboard is not used for 10 minutes, the displayautomatically returns to the rotating default display. Youmust press and to exit Quick Test and thenpress to restart the procedure.103