Final Charge Adjustment - Goodman CONDENSING UNIT Installation & Service Reference

Adequate refrigerant charge for a matching evaporator and 15
feet lineset is supplied with the condensing unit. If line set
exceeds 15 feet in length, refrigerant should be added at .6
ounces per foot of liquid line.
Open the suction service valve first! If the liquid service valve is
opened first, oil from the compressor may be drawn into the
indoor coil TXV, restricting refrigerant flow and affecting opera-
tion of the system.
After the refrigerant charge has bled into the system, open the
liquid service valve. The service valve cap is the secondary
seal for the valves and must be properly tightened to prevent
leaks. Make sure cap is clean and apply refrigerant oil to threads
and sealing surface on inside of cap. Tighten cap finger-tight
and then tighten additional 1/6 of a turn (1 wrench flat), or to
the following specification, to properly seat the sealing sur-
faces.
1. 3/8" valve to 5 - 10 in-lbs
2. 5/8" valve to 5 - 20 in-lbs
3. 3/4" valve to 5 - 20 in-lbs
4. 7/8" valve to 5 - 20 in-lbs
Do not introduce liquid refrigerant from the cylinder into the
crankcase of the compressor as this may damage the
compressor.
CAUTION
POSSIBLE REFRIGERANT LEAK
To avoid a possible refrigerant leak, open the service
valves until the top of the stem is 1/8" from the retainer.
1. Break vacuum by fully opening liquid and suction base
valves.
2. Set thermostat to call for cooling. Check indoor and out-
door fan operation and allow system to stabilize for 10
minutes for fixed orifices and 20 minutes for expansion
valves.
Charge Verification
Am bient Condenser
Inlet Tem pe rature
( °F Drybulb )
115
100
95
90
85
80
75
70
65
60
NOTE: * Charge 5° super he at, all othe r could be ± 2°F
SYSTEM SUPERHEAT
Return Air Te m pe rature ( 50%RH )
Drybulb Wetbulb Drybulb Wetbulb Drybulb Wetbulb Drybulb Wetbulb Drybulb Wetbulb
65º 54º 70º
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5
5 5
5 5
5 6
5 10
8 15
WARNING
REFRIGERANT UNDER PRESSURE!
• Do not overcharge system with refrigerant.
• Do not operate unit in a vacuum or at negative pres-
sure.
Failure to follow proper procedures may cause
property damage, personal injury or death.
CAUTION
Use refrigerant certified
may cause compressor damage. Most portable machines
cannot clean used refrigerant to meet
NOTICE
Violation of EPA regulations may result in fines or other
penalties.
CAUTION
Operating the compressor with the suction valve closed will
void the warranty and cause serious compressor damage.

Final Charge Adjustment

The outdoor temperature must be 60°F or higher. Set the room
thermostat to COOL, fan switch to AUTO, and set the tem-
perature control well below room temperature.
After system has stabilized per startup instructions, check
subcooling and superheat as detailed in the following section.
Fixed Orifice
58º 75º 63º 80º
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5
5
5
5
10
15
20
21
6
to AHRI standards. Used refrigerant
AHRI s tandards.
67º 85º 71º
--- 5
5 6
*
5 9
10 11
12 17
18 20
20 22
24 25
25 29
28 31