Pressure Curves - Trane 4YCZ5024F1060A Installation And Operation Manual

Pressure Curves

550
500
450
400
350
( ( 5) ) ) (5)
300
250
200
40
185
175
165
155
(4)
145
135
125
115
40
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) SUCTION PRESSURE @ 800 CFM IS 146 PSIG.
(5) DISCHARGE PRESSURE @ 800 CFM IS 302 PSIG.
18-EB41D1-1B-EN
Figure 9. Pressure Curves for 4YCZ5024F
Cooling with Thermal Expansion Valve
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
2ND STAGE
(3) ( ( 3 3 ) ) ) )
(1)
60 80 100
OUTDOOR TEMPERATURE (Degree F)
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
2ND STAGE
(3)
(1)
60 80 100
OUTDOOR TEMPERATURE (Degree F)
71, 67, 63 AND 59 DEG F.
550
500
(2)
450
400
350
300
250
200
40
120
71, 67, 63 AND 59 DEG F.
185
175
165
(2)
155
145
135
125
115
120
40
ACTUAL:
SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART
U U n n i i t t S S t t a a r r t t u u p p
1ST STAGE
60 80 100
1ST STAGE
60 80 100
DWG.NO. 4YCZ5024F
120
120
29