Trane GECA -006 Installation Owner Diagnostics page 31

Operating Pressures
GENERAL: There are many variables (airflow, air temperatures) in an air conditioning system that will affect operating
refrigerant pressures and temperatures. The charts below shows approximate conditions and is based on air flow at
the rated SCFM, entering air at 80.6 °F(DB), 66.2 °F(WB) in cooling, 68 °F(DB) in heating. (+)Heating data with 35 °F
EWT is based on the use of an anti-freeze solution having a freezing point 20 °F lower than the minimum expected
entering temperature.
Table 1: Operating pressures in cooling/heating for unit sizes 006-018
Model Entering Water
GECA Water Temp,
°F
35°
45°
55°
60 HZ
68°
006
75°
86°
95°
35°
45°
60 HZ
55°
009
68°
50 HZ
006
75°
86°
95°
35°
45°
60 HZ
55°
012
68°
50 HZ
009
75°
86°
95°
35°
45°
60 HZ
55°
015
68°
50 HZ
012
75°
86°
95°
GECA-SVX01B-EN
Sequence of
Operation
Suction Pres- Discharge
Flow
sure, Pressure,
GPM
PSIG PSIG
1.4
1.8
1.4 75-85 135-174
1.8 75-85 133-169
1.4 75-85 131-169
1.8 75-85 128-163
1.4 77-87 145-187
1.8 77-87 143-182
1.4 78-88 165-212
1.8 78-88 161-205
1.4 79-89 197-255
1.8 79-89 192-246
1.4 80-90 230-290
1.8 80-90 222-282
1.8
2.3
1.8 72-82 119-157
2.3 72-82 119-155
1.8 74-84 122-160
2.3 72-84 120-156
1.8 74-86 143-185
2.3 74-86 139-181
1.8 75-87 163-211
2.3 75-87 158-204
1.8 77-89 199-255
2.3 76-88 193-247
1.8 78-90 231-295
2.3 77-89 223-285
2.6
3.3
2.6 69-79 90-132
3.3 68-80 87-127
2.6 69-81 115-151
3.3 70-80 111-147
2.6 70-82 143-187
3.3 70-82 139-181
2.6 71-83 160-208
3.3 71-83 155-203
2.6 72-84 189-245
3.3 72-84 184-238
2.6 74-86 214-278
3.3 73-85 207-271
2.9
3.6
2.9 72-82 114-146
3.6 71-83 109-141
2.9 73-83 124-160
3.6 72-84 120-154
2.9 73-85 155-197
3.6 73-85 150-190
2.9 74-86 173-219
3.6 74-86 168-212
2.9 75-87 202-258
3.6 75-87 196-250
2.9 76-88 229-293
3.6 76-88 221-283
Operating Data
Cooling
Water Air Temp
Temp Rise Drop
°F °F DB
13-17 22-28
10-13 22-28
12-16 21-27
10-13 22-28
11-15 21-27
9-12 21-27
11-15 21-27
9-12 21-27
11-15 20-26
9-12 20-26
11-15 20-26
9-12 20-26
12-16 22-28
8-12 22-28
11-15 21-27
8-12 21-27
11-15 21-27
9-11 21-27
11-15 21-27
9-11 21-27
11-15 21-27
8-12 21-27
11-15 20-26
8-12 20-26
10-14 22-28
8-12 22-28
10-14 22-28
8-12 22-28
10-14 21-27
8-12 21-27
10-14 21-27
8-12 21-27
10-14 20-26
8-12 20-26
10-14 20-26
9-11 20-26
12-16 23-29
10-14 23-29
11-15 22-28
10-12 22-28
11-15 22-28
8-12 22-28
11-15 21-27
8-12 21-27
11-15 21-27
9-11 21-27
11-15 20-26
9-11 21-27
Heating
Suction Discharge Water Temp
Pressure Pressure Drop
PSIG PSIG °F
38-44 158-204 6-7
40-48 162-208 5-6
48-56 170-218 7-9
52-60 173-223 6-7
59-69 183-235 8-10
63-73 186-240 7-8
74-86 200-256 10-12
78-90 204-262 8-10
82-96 207-265 10-13
87-101 212-272 8-11
98-112 223-285 12-15
101-117 226-290 9-12
41-47 159-205 6-8
42-48 162-208 4-6
51-59 171-219 7-9
52-60 173-221 6-8
60-70 181-231 8-10
62-72 182-234 6-8
74-86 194-250 10-12
77-89 197-253 8-10
82-96 202-260 10-14
85-99 205-263 8-10
94-108 212-272 11-15
94-110 214-276 9-11
46-54 188-232 6-8
48-56 191-235 5-7
56-64 200-246 7-9
58-66 202-248 6-8
67-75 208-258 8-10
67-77 210-260 7-9
73-83 214-264 9-11
74-84 216-268 7-9
78-88 221-273 9-11
81-93 226-278 7-9
91-101 236-290 10-14
96-108 242-296 8-10
36-42 159-205 5-7
37-45 160-224 4-6
45-53 169-217 6-8
47-55 171-221 5-7
52-62 177-231 7-9
55-65 181-235 6-8
63-75 190-248 7-11
67-79 195-253 7-9
71-83 199-257 9-11
75-87 203-263 8-10
81-95 212-272 11-13
87-101 218-278 9-11
Air Temp
Rise
°F DB
15-21
15-21
18-26
18-26
22-32
23-31
27-37
27-37
29-39
29-39
31-43
32-44
18-24
19-25
22-28
22-30
25-33
26-34
28-38
30-38
30-40
31-41
33-43
34-44
24-30
24-30
27-33
27-35
29-37
30-38
31-39
32-40
33-41
33-43
37-45
37-47
18-24
20-26
21-29
23-29
24-32
25-33
28-36
29-37
29-39
31-39
33-43
34-44
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