Trane 4TTX7 User Manual

18-AC125D1-1A-EN 31
Section 18. Pressure Curves
PRESSURE CURVES FOR4TTX7024E1
FIRSTSTAGE SECONDSTAGE
TAM7A0B30H21 TAM7A0B30H21
CoolingwithThermal ExpansionValve CoolingwithThermal ExpansionValve
LIQUID PRESSURE (PSIG)
OUTDOOR TEMPERATURE(Degree F)
SUCTION PRESSURE (PSIG)
OUTDOOR TEMPERATURE(Degree F)
COOLING PERFORMANCE CAN BE CHECKED WHEN THE OUTDOORTEMP IS ABOVE65DEG F.
TO CHECK COOLING PERFORMANCE, SELECT THEPROPER INDOOR CFM, ALLOWPRESSURES TO STABILIZE. MEASURE INDOOR WETBULB
TEMPERATURE, OUTDOORTEMPERATURE, LIQUID ANDSUCTION PRESSURES. ON THEPLOTS LOCATE OUTDOORTEMPERATURE (1);
LOCATE INDOOR WETBULB(2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ LIQUID (4) OR SUCTION(5) PRESSURE IN LEFT COLUMN .
EXAMPLE: FIRSTSTAGE EXAMPLE: SECONDSTAGE
(1) OUTDOOR TEMP. 82 F. (1) OUTDOORTEMP. 82 F.
(2) INDOOR WETBULB67F.(2) INDOOR WETBULB67F.
(3 )AT INTERSECTION (3 )AT INTERSECTION
(4)LIQUID PRESSURE @600 CFM IS 295PSIG(4) LIQUID PRESSURE @810 CFM IS 280PSIG
(5 )SUCTION PRESSURE @600 CFM IS 145PSIG(5) SUCTION PRESSURE @810 CFM IS 150 PSIG
ACTUAL:
LIQUID PRESSURE SHOULD BE +/-10PSI OF CHART
INTERCONNECTINGLINES
GAS-3/4" O.D.
LIQUID -3/8"O.D.
SUCTION PRESSURESHOULDBE+/- 3PSIG OF CHART
DWG.NO.
4TTX7024E1
120
130
140
150
160
170
40 50 60 70 80 90 100 110 120
120
130
140
150
160
170
40 50 60 70 80 90 100110 120
150
200
250
300
350
400
450
500
40 50 60 70 80 90 100110 120
150
200
250
300
350
400
450
500
40 50 60 70 80 90 100 110 120
(1)
(1)
(3)
(3)
(5)
(4)
(2)
(2)
INDOOR ENTERING
WETBULBCURVES
TOPTOBOTTOM71,
67, 63 AND59DEG F.
INDOOR ENTERING
WETBULB CURVES
TOPTOBOTTOM71,
67, 63 AND59DEG F.
INDOOR ENTERING
WETBULBCURVES
TOPTOBOTTOM 71,
67, 63 AND59DEG F.
INDOOR ENTERING
WETBULB CURVES
TOPTOBOTTOM71,
67, 63 AND59DEG F.
(2)
(1)
(4)
(3)
(2)
(1)
(3)
(5)

Trane 4TTX7 Specifications

General

Brand	Trane
Model	4TTX7
Category	Heat Pump
Language	English