Trane ComfortLink II 4TWZ0060A1000C Service Facts page 8

Cooling with Thermal Expansion Valve
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
550
2ND STAGE
500
450
400
350
300
250
200
40 60 80 100
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
185
71, 67, 63 AND 59 DEG F.
2ND STAGE
175
165
155
145
135
125
115
40 60 80 100
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, DISCHARGE 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 DISCHARGE OR SUCTION PRESSURE IN LEFT
COLUMN (4).
EXAMPLE: (1) OUTDOOR TEMP. 82 F.
(2) INDOOR WET BULB 67 F.
(3) AT INTERSECTION
(4) DISCHARGE PRESSURE @ 900 CFM IS 296 PSIG
(5) SUCTION PRESSURE @ 1600 CFM IS 145 PSIG
INTERCONNECTING LINES
GAS - 3/4" O.D.
LIQUID - 3/8" O.D.
8
PRESSURE CURVES FOR 4TWZ0060A1000
4 T E E 3 C 1 0 A 1
550
1ST STAGE
500
450
400
350
(3)
(4)
300
250
(1)
200
120 40 60 80
OUTDOOR TEMPERATURE (Degree F)
185
1ST STAGE
175
165
155
(5)
(3)
145
135
125
(1)
115
120
40 60 80
OUTDOOR TEMPERATURE (Degree F)
Heating with Thermal Expansion Valve
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
500
2ND STAGE
(2)
450
400
350
300
250
200
100 120
-5 5 15 25 35 45 55 65
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
160
150
2ND STAGE
140
(2) 130
120
110
100
90
80
70
60
50
40
100 120
-5 5 15 25 35 45 55 65
ACTUAL:
DISCHARGE PRESSURE SHOULD BE +/- 10 PSI OF CHART
SUCTION PRESSURE SHOULD BE +/- 3 PSIG OF CHART
DWG.NO. 4TWZ0060A1000AA
4 T E E 3 C 1 0 A 1
80, 70, AND 60 DEG F.
500
1ST STAGE
450
400
350
300
250
200
-5 5 15 25 35 45 55 65
160
80, 70, AND 60 DEG F.
150
1ST STAGE
140
130
120
110
100
90
80
70
60
50
40
-5 5 15 25 35 45 55 65