Trane A4AC3018D Installation And Operation Manual page 42

520
INDOOR ENTERING
WET BULB CURVES
470
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
420
370
(4)
320
270
220
170
50
170
165
160
155
150
145
(5)
140
135
130
125
120
115
110
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 320 PSIG
(5) SUCTION PRESSURE @ 600 CFM IS 138 PSIG
42
PRESSURE CURVES (Refer below table for models)
(3)
60 70 80
OUTDOOR TEMPERATURE (Degree F)
INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
60 70 80
OUTDOOR TEMPERATURE (Degree F)
(1)
90 100 110
(3)
90 100 110
ACTUAL:
LIQUID PRESSURE SHOULD BE +/- 10 PSI OF CHART
SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
(2)
120
OD Model
A4AC3048B1
A4AC3060A1
71
(2)
67
63
59
120
88-A4AC3001-1J-EN
Cooling
@SCFM
1400
1600