Trane A4AC3018D Installation And Operation Manual page 39

600
INDOOR ENTERING
WET BULB CURVES
550
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
500
450
400
(4)
350
300
250
200
50
170
INDOOR ENTERING
165
WET BULB CURVES
TOP TO BOTTOM
160
71, 67, 63 AND 59 DEG F.
155
150
(5)
145
140
135
130
125
120
50
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOOR TEMP IS ABOVE 65 DEG F.
TO CHECK COOLING PERFORMANCE, SELECT THE PROPER INDOOR CFM, ALLOW PRESSURES TO STABILIZE. MEASURE INDOOR WET BULB
TEMPERATURE, OUTDOOR TEMPERATURE, LIQUID AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1);
LOCATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION (5) PRESSURE IN LEFT COLUMN .
EXAMPLE: (1) OUTDOOR TEMP. 82 F.
(2) INDOOR WET BULB 67 F.
(3) AT INTERSECTION
(4) LIQUID PRESSURE @ 600 CFM IS 346 PSIG
(5) SUCTION PRESSURE @ 600 CFM IS 145 PSIG
88-A4AC3001-1J-EN
PRESSURE CURVES (Refer below table for models)
(3)
(1)
60 70 80
OUTDOOR TEMPERATURE (Degree F)
(3)
(1)
60 70 80
OUTDOOR TEMPERATURE (Degree F)
(2)
90 100 110
71
(2)
67
63
59
90 100 110
ACTUAL:
LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
120
OD Model
A4AC3029A1
120
Cooling
@SCFM
1000
39