Carrier PG9UAA Troubleshooting Manual page 35

STATIC PRESSURE READING LOCATION DIAGRAMS
OUTDOOR UNIT
RETURN STATIC
INCLINE MANOMETER
AIRFLOW
Tools Needed:
Pitot Tube
Incline Manometer/Magnahelic
Example 1:
Return ESP after Filter
Supply ESP before Coil
- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
Total ESP
0.60 in.w.c.
Example 2:
Return ESP before Filter
Filter Static Pressure Drop @ 2000 cfm
Supply ESP after Coil
Coil Static Pressure Drop Wet
- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -
Total ESP
0.60 in.w.c.
Both Examples 1 and 2 are correct. Example 1 ESP readings were taken as laid out in static pressure reading location diagrams (Fig. 5).
Example 2 readings are taken as described. The coil and filter static pressure drops were taken from the manufacturer's product data sheets
with the assumption that 2000 cfm is being delivered.
APPENDIX D
COMBUSTION
AIR PIPE
A/C COIL
ELECTRONIC
AIR CLEANER
Fig. 5 - - Upflow Total Static Pressure Reading Locations
1.
2.
0.20 in.w.c.
0.40 in.w.c.
0.10 in.w.c.
0.10 in.w.c.
0.20 in.w.c.
0.20 in.w.c.
VENT PIPE
HUMIDIFIER
GAS-FIRED
WATER HEATER
35
SUPPLY STATIC
INCLINE MANOMETER
A03091