Table of Contents
Advertisement
If subcooling is high and superheat is low, adjust TXV
valve to 7ºF to 9ºF (-13.9ºC to -12.8ºC) superheat and
remove charge to lower the subcooling to 5ºF to 7ºF
(-15ºC to -13.9ºC).
NOTE: Do not adjust the charge based on the suction
pressure unless there is a gross undercharge.
NOTE: Subcooling Formula = Saturated Liquid Temperature - Liquid Line Temperature
Saturated Liquid Pressure Temperature
Liquid Pressure
PSIG
200
210
220
225
235
245
255
265
275
285
295
305
325
355
NOTE: Check the Schrader ports for leaks and tighten the valve cores if necessary. Install caps finger tight.
NOTICE
Units with reciprocating compressors and non-bleed
TXV's require a Hard Start Kit.
Saturated Liquid
Temperature ºF (ºC)
R-410A
70 (21.1)
73 (22.8)
76 (24.4)
78 (25.6)
80 (26.7)
83 (28.3)
85 (29.4)
88 (31.1)
90 (32.2)
92 (33.3)
95 (35)
97 (36.1)
101 (38.3)
108 (42.2)
Complete Installation
Goodman 23
WARNING
To prevent personal injury, carefully connect and
disconnect manifold gauge hoses. Escaping liquid
refrigerant can cause burns. Do not vent refrigerant into
the atmosphere. Recover all refrigerant during system
repair and before final unit disposal.
6. Disconnect the manifold set. Installation is now complete.
Liquid Pressure
PSIG
375
405
415
425
435
445
475
500
525
550
575
600
625
1. Operate the heat pump for a period of at least 15 minutes to
allow for pressures and temperatures to stabilize.
2. If heat pump does not appear to be functioning correctly,
have heat pump checked by a person certified by the EPA to
handle refrigerant.
Goodman 30
Saturated Liquid
Temperature ºF (ºC)
R-410A
112 (44.4)
118 (47.8)
119 (48.3)
121 (49.4)
123 (50.6)
125 (51.7)
130 (54.4)
134 (56.7)
138 (58.9)
142 (61.1)
145 (62.8)
149 (65)
152 (66.7)
11
Advertisement
Table of Contents
