Trane 4TWR4 User Manual

18-BC95D1-5E-EN 25
Section 19. Pressure Curves
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
TEM
PERATURE, OUTDOOR TEMPERATURE, DISCHARGE AND SUCTION PRESSURES. ON THE PLOTS LOCATE OUTDOOR TEMPERATURE (1);
LO
CATE INDOOR WET BULB (2); FIND INTERSECTION OF OD TEMP. & ID W.B. (3); READ DISCHARGE OR SUCTION PRESSURE IN LEFT
CO
LUMN (4).
EX
AMPLE: (1) OUTDOOR TEMP. 82 F.
(2
) INDOOR WET BULB 67 F.
(3
) AT INTER
S
E
C
TIOANCTUAL:
(4
) DISCHARGE PRESSURE @ 670 CFM IS 318 PSIG. DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART
(5) SUCTION PRESSURE @ 670 CFM IS 149 PSIG. SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
OUTDOOR TEMPERATURE (Degree F)
130
135
140
145
150
155
160
165
170
50 70 90 110
200
250
300
350
400
450
500
550
50 70 90 110
(1)
(1)
(3)
(3)
(5)
(4)
(2)
(2)
INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
INDOOR ENTERING
WET BULB CURVES
TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
30
40
50
60
70
80
90
100
110
120
130
140
-5 5152535455565
200
250
300
350
400
450
500
-5 5152535455565
INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.
INDOOR ENTERING
DRY BULB CURVES
TOP TO BOTTOM
80, 70, AND 60 DEG F.
PRESSURE CURVES FOR 4TWR4017N1
TEM4A0B18S21+TDR TEM4A0B18S21+TDR
Cooling @ 670 SCFM Heating @ 670 SCFM
DISCHARGE PRESSURE (PSIG)SUCTION PRESSURE (PSIG)

Trane 4TWR4 Specifications

General

Brand	Trane
Model	4TWR4
Category	Heat Pump
Language	English