Table of Contents
Advertisement
PRESSURE CURVES FOR 4TWZ0024A1000A UPFLOW & HORIZ. RIGHT
4TEE3C03A1
Cooling with Thermal Expansion Valve
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
500
500
2ND STAGE
450
450
400
400
350
350
300
300
250
250
200
200
40
60
80
100
120
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
180
180
71, 67, 63 AND 59 DEG F.
2ND STAGE
170
170
160
160
150
150
140
140
130
130
120
120
40
60
80
100
120
PRESSURE CURVES FOR 4TWZ0024A100A DOWNFLOW & HORIZ. LEFT
4TEE3C03A1
Cooling with Thermal Expansion Valve
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
71, 67, 63 AND 59 DEG F.
550
550
2ND STAGE
500
500
450
450
400
400
350
350
300
300
250
250
200
200
40
60
80
100
120
INDOOR ENTERING WET BULB CURVES TOP TO BOTTOM
185
185
71, 67, 63 AND 59 DEG F.
2ND STAGE
175
175
165
165
155
155
145
145
135
135
125
125
40
60
80
100
120
8
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
450
1ST STAGE
(2)
400
350
300
250
(4)
(3)
200
(1)
150
40
60
80
100
120
-5 5 15 25 35 45 55 65
OUTDOOR TEMPERATURE (Degree F)
150
140
1ST STAGE
130
120
(2)
110
100
(5)
(3)
90
80
70
60
50
(1)
40
40
60
80
100
120
-5 5 15 25 35 45 55 65
OUTDOOR TEMPERATURE (Degree F)
400
1ST STAGE
(2)
350
300
(4)
(3)
250
(1)
200
40
60
80
100
120
-5 5 15 25 35 45 55 65
OUTDOOR TEMPERATURE (Degree F)
160
150
1ST STAGE
140
130
(2)
120
110
100
(5)
(3)
90
80
70
60
50
(1)
40
40
60
80
100
120
-5 5 15 25 35 45 55 65
OUTDOOR TEMPERATURE (Degree F)
4TEE3C03A1
Heating with Thermal Expansion Valve
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
80, 70, AND 60 DEG F.
450
2ND STAGE
1ST STAGE
400
350
300
250
200
150
-5
5 15 25 35 45 55 65
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
150
80, 70, AND 60 DEG F.
140
2ND STAGE
1ST STAGE
130
120
110
100
90
80
70
60
50
40
-5
5 15 25 35 45 55 65
4TEE3C03A1
Heating with Thermal Expansion Valve
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
80, 70, AND 60 DEG F.
400
2ND STAGE
1ST STAGE
350
300
250
200
-5
5 15 25 35 45 55 65
INDOOR ENTERING DRY BULB CURVES TOP TO BOTTOM
160
80, 70, AND 60 DEG F.
150
2ND STAGE
1ST STAGE
140
130
120
110
100
90
80
70
60
50
40
-5
5 15 25 35 45 55 65
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
@ 430 CFM IS 288 PSIG.
(5) SUCTION PRESSURE
@ 845 CFM IS 149 PSIG.
DISCHARGE PRESSURE SHOULD BE
+/- 10 PSI OF CHART
SUCTION PRESSURE SHOULD BE
+/- 3 PSIG OF CHART
INTERCONNECTING LINES
GAS - 5/8" O.D.
LIQUID - 3/8" O.D.
DWG. NO. 4TWZ0024A1
Advertisement
Table of Contents
