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INSTALLATION
STELLAR
INSTRUCTIONS
AIR CONDITIONING UNIT
SPLIT-SYSTEM COOLING
CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
LOCATION . . . . . . . . . .
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550.38-N1Y Installer should pay particular attention to the words: NOTE, GENERAL CAUTION and WARNING. This instruction covers the installation of the following Stellar NOTES are intended to clarify or make the installation easier. air conditioning units. CAUTIONS are given to prevent equipment damage. NOMENCLATURE WARNINGS are given to alert the installer that personal H 4 DB 030 S 06 injury and/or equipment damage may
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550.38-N1Y TO WEATHERPROOF THERMOSTAT BLOWER DISCONNECT 48” OVERHEAD MOTOR SWITCH CLEARANCE TO POWER 12” REAR RELAY REQUIRED SUPPLY AND SIDES CLEARANCE NEC CLASS 1 REQUIRED WIRING Sit unit on rubber NEC CLASS 2 elevator WIRING grommets TO to reduce COIL noise and allow for proper drainage. NOTE: ALL OUTDOOR WIRING MUST BE WEATHERPROOF 24” SERVICE ACCESS CLEARANCE REQUIRED SEAL OPENING(S) WITH PERMAGUM OR EQUIVALENT FIGURE 1: TYPICAL INSTALLATION Normal operating sound levels may be o
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550.38-N1Y Coil is under 30 PSIG helium pressure. Relieve pres- sure from schrader valve on liquid line side. ! " # $ % # " & & $ ’ This fitting is a right-hand thread, turn counter-clock- wise to remove. 1. First, relieve the holding charge by depressing the Schrader valve located in the end of the liquid line. 2. Remove the liquid line fitting using 3/4" wren
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550.38-N1Y Ensure the bulb is making maximum contact. Refer to TXV installation instruction for view of bulb location. The evaporator coil is under 30 psig pressure. 2. After holding charge is completely discharged, loosen and remove the liquid line fitting from the orifice distributor In all cases, mount the TXV bulb after vapor line is assembly. Note that the fitting has right hand threads. brazed and has had sufficient time to cool. 3. Remove the orifice from the distributor body using a sma
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550.38-N1Y 4. The vapor line must be insulated with a minimum of 1/2" foam rubber insulation (Arm-A-Flex or equivalent). Liquid lines that will be exposed to direct sunlight and/or high temperatures must also be insulated. Dry nitrogen should always be supplied through the Tape and suspend the refrigerant lines as shown. DO NOT tubing while it is being brazed, because the tempera- allow metal-to metal contact. See Figure 4. ture required is high enough to cause oxidation of the copper unless an
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550.38-N1Y 7. Replace the schrader cores in the liquid and vapor valves. 8. Evacuate the vapor line, evaporator and the liquid line, to 500 microns or less. 9. Leak test all refrigerant piping connections including the service port flare caps to be sure they are leak tight. DO NOT OVERTIGHTEN (between 40 and 60 inch - lbs. maximum). NOTE: Do not use the system refrigerant in the outdoor unit to purge or leak test. 10. Replace caps on service ports. Do not remove the flare caps from the service
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550.38-N1Y ate the system down to at least 500 microns to eliminate POWER CONTROL contamination and moisture in the system. WIRING WIRING LOW VOLTAGE JUNCTION BOX GROUND Never attempt to repair any brazed connections while LUG the system is under pressure. Personal injury could result. See “SYSTEM START-UP” on page 9 for checking and recording system charge. GENERAL INFORMATION & GROUNDING Check the electrical supply to be sure that it meets the values specified on the unit nameplate and wir
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550.38-N1Y The “TOTAL SYSTEM CHARGE” must be permanently 1. Operate system until temperatures and pressures stabi- stamped on the unit data plate. lize (minimum of 10 minutes). 2. Measure and record indoor wet bulb (WB) temperature Total system charge is determined as follows: using a sling psychrometer and the outdoor dry bulb (DB) temperature using a thermometer. 1. Determine outdoor unit charge from tabular data sheet. 3. Measure and record the suction pressure at the suction 2. Determine ind
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550.38-N1Y 2 3 , )4 5 ) *+, )-*. /. 0* # / + ( GROUND. ) - * . / . 1 * 2 ) 3 LUG ! "
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550.38-N1Y
,-. /,0 /0 1, 1,0 /0 1, /-,. 230 /0 3, 3430 /0 1, 2 / 5 3/ 1, ! " # ! $
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550.38-N1Y Table 1: SUPERHEAT VALUE OUTDOOR DB°F INDOOR WB 1 °F 55 60 65 70 75 80 85 90 95 100 105 110 115 50 9 7 52 12 10 6 54 14 12 10 7 56 17 15 14 10 6 58 20 18 16 13 9 5 60 23 21 19 16 12 8 6 62 26 24 22 19 16 12 8 5 64 29 27 24 21 18 15 11 9 6 66 32 31 30 24 23 18 15 11 9 6 68 35 33 30 27 24 21 19 16 14 12 9 6 70 35 33 30 28 25 22 20 18 15 13 11 8 72 35 33 30 28 26 24 20 20 17 15 14 74 34 31 30 27 25 23 22 20 18 76 35 33 31 29 27 26 25 23 1. Evaporator Entering Air °F Table 2: TEMPERATURE
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550.38-N1Y SYSTEM CONTROLLER - HDB076 ONLY INDICATIONS OF PROPER OPERATION Controls operation as follows: Cooling operation is the same as any conventional air condi- tioning unit. 1. RANDOM START - Upon initial application of power and a 2.5 second time delay, the compressor contactor will The following checks may be made to determine if the sys- be energized. tem is operating properly: 2. ANTI-SHORT CYCLE - Once the unit is energized, a 1. The outdoor fan should be running, with warm air being
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550.38-N1Y NOTES: 14 Unitary Products Group
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550.38-N1Y NOTES: Unitary Products Group 15
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550.38-N1Y NOTES: Heating and Air Conditioning Unitary Products Group 5005 York Drive, Norman, Oklahoma 73069 Subject to change without notice. Printed in U.S.A. Copyright © by Unitary Products Group 1999. All rights reserved. Supersedes: 550.38-N1Y (899) 550.38-N1Y (999)
