Goodman GSZ16 Installation & Service Reference Download Page 3

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To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrigerant 
from a system.
 

  Ensure the cylinder is free of damage which could lead to 

    a leak or explosion.

   Ensure the hydrostatic test date does not exceed 5 years.

   Ensure the pressure rating meets or exceeds 400 PSIG.

When in doubt, do not use cylinder.

Refrigerant Lines

The compressor POE oil for R-410A units is extremely
susceptible to moisture absorption and could cause
compressor failure. Do not leave system open to atmos-
phere any longer than necessary for installation. 

CAUTION

Use only refrigerant grade (dehydrated and sealed) copper tub-
ing to connect the condensing unit with the indoor evaporator.
After cutting the tubing, install plugs to keep refrigerant tubing
clean and dry prior to and during installation.  Tubing should
always be cut square keeping ends round and free from burrs.
Clean the tubing to prevent contamination.

Do NOT let refrigerant lines come in direct contact with plumb-
ing, ductwork, floor joists, wall studs, floors, and walls.  When
running refrigerant lines through a foundation or wall, openings
should allow for sound and vibration absorbing material to be
placed or installed between tubing and foundation. Any gap
between foundation or wall and refrigerant lines should be filled
with a pliable silicon-based caulk, RTV or a vibration damping
material. Avoid suspending refrigerant tubing from joists and
studs with rigid wire or straps that would come in contact with
the tubing. Use an insulated or suspension type hanger. Keep
both lines separate and always insulate the suction line.

These sizes are recommended for line lengths of 79 feet or
less to obtain optimum performance. For alternate line siz-
ing options or runs of more than 79 feet, refer to TP-107
Long Line Set Application R-410A, or contact your distribu-
tor for assistance.

Cond

Unit

Tons

Suct

Liq

Suct

Liq

Suct

Liq

1 1/2

5/8

1/4

3/4

3/8

3/4

3/8

2

5/8

1/4

3/4

3/8

3/4

3/8

2 1/2

5/8

1/4

3/4

3/8

7/8

3/8

3

3/4

3/8

7/8

3/8

1 1/8

3/8

3 1/2

7/8

3/8

1 1/8

3/8

1 1/8

3/8

4

7/8

3/8

1 1/8

3/8

1 1/8

3/8

5

7/8

3/8

1 1/8

3/8

1 1/8

3/8

Line Diameter (In. OD)

RECOMMENDED INTERCONNECTING TUBING (Ft)

0-24

25-49

    50-79*

* Lines greater than 79 feet in length or vertical elevation changes more
than 50 feet 

refer to the TP-107 R-410A Long Line Set Application 

Guidelines or contact your distributor for assistance.

Insulation is necessary to prevent condensation from forming
and dropping from the suction line.  Armflex (or satisfactory
equivalent) with 3/8

 min. wall thickness is recommended.  In

severe conditions (hot, high humidity areas) 1/2

 insulation may

be required.  Insulation must be installed in a manner which
protects tubing from damage and contamination.

Existing Line Sets

Where possible, drain as much residual compressor oil from
existing systems, lines, and traps; pay close attention to low
areas where oil may collect. Use of an approved flushing agent
is recommended followed by a nitrogen purge to remove any
remaining flushing agent from the lines or indoor coil. Replace-
ment of indoor coil is recommended.

NOTE: 

If using existing indoor coil and changing refrigerant

types, ensure the indoor coil and metering device are compat-
ible with the type of refrigerant being used. If new indoor coil is
required check spec sheet or AHRI for approved coil. If system
is being replaced due to compressor electrical failure, assume
acid is in system. Refer to Service Procedure S-115 Compres-
sor Burnout in service manual for clean-up procedure.

Burying Refrigerant Lines

If burying refrigerant lines can not be avoided, use the following
checklist.

1. Insulate liquid and suction lines separately.

2. Enclose all underground portions of the refrigerant lines

in waterproof material (conduit or pipe) sealing the ends
where tubing enters/exits the enclosure.

3. If the lines must pass under or through a concrete slab,

ensure lines are adequately protected and sealed.

Summary of Contents for GSZ16

Page 1: ...lity of the carrier Verify the model number specifications electrical characteristics and accessories are correct prior to installation The distribu tor or manufacturer will not accept claims from dea...

Page 2: ...r springs can be installed between the con densing unit legs or frame and the roof mounting assembly to reduce noise vibration NOTE These units require special location consideration in areas of heavy...

Page 3: ...tance Cond Unit Tons Suct Liq Suct Liq Suct Liq 1 1 2 5 8 1 4 3 4 3 8 3 4 3 8 2 5 8 1 4 3 4 3 8 3 4 3 8 2 1 2 5 8 1 4 3 4 3 8 7 8 3 8 3 3 4 3 8 7 8 3 8 1 1 8 3 8 3 1 2 7 8 3 8 1 1 8 3 8 1 1 8 3 8 4 7...

Page 4: ...ented lines will cause poor performance or compressor damage Do NOT make final refrigerant line connection until plugs are removed from refrigerant tubing NOTE Before brazing verify indoor piston size...

Page 5: ...ch located near the unit do not install the switch on the unit Refer to the installa tion instructions supplied with the indoor furnace air handler for specific wiring connections and indoor unit conf...

Page 6: ...f disabling this function is desired move the jumper from DLY to NORM on the defrost control Adequate refrigerant charge for the matching HSVTC evapora tor coil and 15 feet of lineset is supplied with...

Page 7: ...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 Purge gauge lines Conne...

Page 8: ...URATED SUCTION TEMPERATURE F LIQUID PRESSURE PSIG R 22 R 410A 200 101 70 210 105 73 220 108 76 225 110 78 235 113 80 245 116 83 255 119 85 265 121 88 275 124 90 285 127 92 295 130 95 305 133 97 325 13...

Page 9: ...nit and refrigerant tubing sizes These adjustments should only be performed by qualified service personnel AdvancedAdjustmentRecommendations SUPERHEATFORMULA SUCTIONLINETEMPERA TURE SATURATEDSUCTIONTE...

Page 10: ...t with Voltmeter Low Voltage Test Voltage Faulty Evap Fan Motor Repair or Replace Shorted or Grounded Fan Motor Test Motor Windings Improper Cooling Anticipator Check Resistance of Anticipator Shortag...

Page 11: ...airflow If cleaning of the outdoor coil becomes necessary hire a qualified servicer Inexperienced people could easily puncture the tubing in the coil Even a small hole in the tubing could eventually c...

Page 12: ...gh not required to get the protection of the standard warranty registering your product is a relatively short process and entitles you to additional warranty protection except that failure by Californ...

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