Technical Publication

ManualsBrandsGoodman ManualsAir Conditioner Condensers4 Ton 16 SEER Two-Stage Central Air Conditioner w/ R410A Refrigerant

INDEX

SECTION 1. General Requirements for All Long Line Set Applications .............................. 2

SECTION 2. Outdoor Unit and Indoor Unit are at the Same Elevation ............................... 4

SECTION 3. Outdoor Unit is Above the Indoor Unit ............................................................ 5

SECTION 4. Outdoor Unit is Below the Indoor Unit ............................................................ 6

SECTION 5. Calculations - Tubing Equivalent Length, Tube Size and Refrigerant ............ 7

Before connecting tubing, read the outdoor unit installation manual. Pay particular

attention to all safety precautions.

This long line set application guideline applies to all AHRI listed R-410A air conditioner and heat pump split

system matches of nominal capacity 18,000 to 60,000 Btuh. This guideline will cover installation requirements

and additional accessories needed for split system installations where the line set exceeds 80 feet (24.4 m) in

actual length. The long line sets can have three different configurations (1) Outdoor unit and Indoor unit are at

the same level, (2) Outdoor unit is above the Indoor unit coil, (3) Outdoor unit is below the Indoor unit.

This guideline is meant to provide installation instructions based on most common long line set applications.

Installation variables may affect the system operation.

Contact Technical Services

for variations or applications outside those outlined in this document.

TP-107K

TECHNICAL PUBLICATION

TP-107K

Goodman Company, L.P.

April 2017

LONG LINE SET

APPLICATION R-410A

Summary of content (12 pages)

PAGE 1
LONG LINE SET APPLICATION R-410A TECHNICAL PUBLICATION TP-107K Goodman Company, L.P. INDEX SECTION 1. General Requirements for All Long Line Set Applications .............................. 2 SECTION 2. Outdoor Unit and Indoor Unit are at the Same Elevation ............................... 4 SECTION 3. Outdoor Unit is Above the Indoor Unit ............................................................ 5 SECTION 4. Outdoor Unit is Below the Indoor Unit ..........................................................
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SECTION 1. GENERAL REQUIREMENTS FOR ALL LONG LINE SET APPLICATIONS 1. Equivalent length must be used to determine acceptability of any long line set application. See Section 5 for equivalent length calculations. 2. For any residential split system installed with a long line set, 3/8” liquid line size must be used. Limiting the liquid line size to 3/8” is critical since an increased refrigerant charge level from having a larger liquid line could possibly shorten a compressor’s life-span. a.
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Hanger Wall Stud Liquid Line Strapped to Suction Line Liquid Line Metal Sleeve Suction Line Wrapped in Armaflex® Figure 1-1. Installation of Refrigeration Piping From Vertical to Horizontal IMPORTANT - Refrigerant lines must not touch wall.
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If hanging line set from a joist or rafter, use metal strapping or heavy nylon wire tires that are securely anchored. Wire Tie (around suction line only) 8’ (2.4 m) Floor Joist or Roof Rafter Tape or Wire Tie 8’ (2.4 m) Floor Joist or Roof Rafter Metal Sleeve Strapping placed around the suction line only Tape or Wire Tie After the suction line has been strapped to the joist or rafter at 8’ (2.4 m) intervals, strap the liquid line to the suction line. Figure 1-3.
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4. An accumulator is not required for air conditioners (accumulators are factory installed on heat pumps). 5. An oil trap at the indoor unit is not required. 6. Liquid Line Solenoid not required if non-bleed TXV is used on the outdoor unit. SECTION 3.
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SECTION 4. OUTDOOR UNIT IS BELOW THE INDOOR UNIT Accessory Air Conditioner (AC) Heat Pump (HP) Crankcase Heater (40 watts minimum) Yes Yes Hard Start Assist Yes (See manual for each product) Yes (See manual for each product) TXV (Indoor) Yes Yes Liquid Line Solenoid at Outdoor (Kit # LSK02*) Yes Yes *See Note 5 Inverted Refrigerant Trap at Indoor Yes Yes Oil Trap at Indoor No No 1. The maximum elevation (vertical) difference between the outdoor unit and the indoor unit is 80 feet (24.
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SECTION 5. CALCULATIONS - TUBING EQUIVALENT LENGTH, TUBE SIZE AND REFRIGERANT 1. In long line applications the “equivalent line length” is the sum of the straight length portions of the suction line plus losses (in equivalent length) from 45 and 90 degree bends. Add the total straight (lineal) length of tubing to the equivalent length of elbows and bends to get total equivalent length. Equivalent length = LengthHorizontal + LengthVertical + Losses from bends (see Table 5-1) 2.
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Unit (Btu) Suction Dia. (in) 18000 24000 30000 36000 42000 48000 1/2 5/8 3/4 5/8 3/4 7/8 2 5/8 3/4 7/8 5/8 3/4 7/8 3 3/4 7/8 1 1/8 3/4 7/8 4 60000 1 1/8 3/4 7/8 1 1/8 4 Capacity Multiplier for Given Length (ft)1 25 50 75 100 125 150 175 200 225 250 0.99 1.00 1.00 0.99 1.00 1.00 0.99 1.00 1.00 0.99 1.00 1.00 1.00 1.00 1.00 0.99 1.00 1.00 0.99 1.00 1.00 0.97 0.99 1.00 0.99 1.00 1.00 0.99 1.00 1.00 0.98 1.00 1.00 0.99 1.00 1.00 0.99 0.99 1.00 0.98 0.99 1.00 0.96 0.99 1.00 0.98 0.99 1.
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4. Refrigerant Quantity Adjustment. All residential R-410A outdoor units are factory charged for 15 feet (4.6 m) of line set. To calculate the initial amount of extra refrigerant (in ounces): a. Subtract 15 feet (4.6 m) from the total linear (not equivalent) length of actual line set b. Multiply that value by 0.6 (oz. per foot) or 17.0 (g per meter) of R-410A refrigerant c. This will be the initial amount of R-410A refrigerant that must be added prior to final charge adjustment.
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NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE Quality Makes the Difference! All of our systems are designed and manufactured with the same high quality standards regardless of size or efficiency. We have designed these units to significantly reduce the most frequent causes of product failure. They are simple to service and forgiving to operate. We use quality materials and components. Finally, every unit is run tested before it leaves the factory.