Carrier 39L Series Installation, Operation, And Start-Up Instructions page 105

KEYBOARD DISPLAY
ENTRY RESPONSE
FSD NRM
MTR XXX
OAVP 0.00
AQ1 XXX
AQ2 XXX
CUST EN
DXSD NRM
LEGEND
HOA — Hands/Off/Automatic
IGV — Inlet-Guide Vane
VAV — Variable Air Volume
Table 18 — Test of Input Signals (cont)
At Terminal Block 3, short Terminals 1 and 2. Verify that the display changes to FSD ALM. Verify the
following:
• Supply fan is OFF
• Outside air and exhaust dampers (if applicable) close
• Return fan is OFF
• Supply fan IGVs close (VAV units)
• Return fan IGVs close (VAV units equipped with return fan)
• Heat Interlock relay is OFF (VAV units)
If applicable, verify that the display increments following the connected pulse-type meter measuring power.
Verify that the velocity pressure reads 0.00 in. wg with the fan OFF and the mixed-air damper closed
(0 setting).
Verify the displayed value using field-supplied instrumentation located near the sensor.
Verify the displayed value using field-supplied instrumentation located near the sensor.
Verify condensing unit lockout operation by rotating thermostat so display changes to CUST DSB. Reverse
thermostat to change setting back to CUST EN and reenable unit.
Verify that the direct expansion cooling shutdown value is normal.
Proceed with the testing of the outputs options (Table 19).
COMMENTS/ACTION
105