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Carrier 38HDL018, Installation, Start-Up And Service Instructions Manual, Page: 12 / 12

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Carrier 38HDL018 Installation, Start-Up And Service Instructions Manual Download Page 12

Copyright 1999 Carrier Corporation

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1

4

Tab

3a 2a

PC 111

Catalog No. 563-885

Printed in U.S.A.

Form 38HDL-2SI

Pg 12

1-99

Replaces: 38HDL-1SI

Summary of Contents for 38HDL018

Page 1: ... for brazing operations Have a fire extinguisher available Read these instructions thor oughly Consult local building codes and National Electrical Code NEC for special installation requirements INSTALLATION Before installing or servicing system always turn off main power to system There may be more than one dis connect switch Turn off accessory heater power if applicable Electrical shock can caus...

Page 2: ...185 83 9 048 3 13 16 944 6 3 89 16 1131 9 1 51 16 433 4 1 67 16 468 3 2 61 2 774 7 1 75 8 498 5 2 55 8 752 5 2 83 16 817 6 1 17 8 352 4 0 81 4 209 5 0 4 406 4 0 07 8 22 22 222 100 5 060 3 13 16 944 6 3 89 16 1131 9 1 51 16 433 4 1 67 16 468 3 2 61 2 774 7 1 75 8 498 5 2 55 8 752 5 2 83 16 817 6 1 111 16 347 7 0 81 8 206 4 0 37 8 403 2 0 07 8 22 22 249 112 9 UNIT SIZE 38HDL MINIMUM MOUNTING PAD DIM...

Page 3: ...tes it must be evacuated to 1000 microns to eliminate contamination and moisture in the system Run refrigerant tubes as directly as possible avoiding un necessary turns and bends Suspend refrigerant tubes so they do not damage insulation on vapor tube and do not transmit vibration to the structure Also when passing refrigerant tubes through the wall seal opening so that vibration is not trans mitt...

Page 4: ...d wiring must be in compliance with NEC and applicable local codes Use mini mum 60 C wire for field power connection Route power wires through opening in the unit side panel and connect in unit control box as shown on unit label dia gram and Fig 5 and 6 Unit must be grounded CONTROL CIRCUIT WIRING Control voltage is 24 v See Fig 5 and unit label diagram for field supplied wiring details Route cont...

Page 5: ...7KC PFV Oil oz Initial Recharge 25 21 25 21 38 34 54 50 42 38 56 52 OUTDOOR FAN Propeller Type Direct Drive Horizontal Rpm 850 850 850 850 850 850 Diameter in No of Blades 18 3 18 3 18 3 18 3 24 3 24 3 Fan Pitch Deg 25 27 27 31 24 24 Motor Hp 1 8 1 8 1 8 1 8 1 4 1 4 Nominal Airflow Cfm 1720 1720 1720 1720 3900 3900 OUTDOOR COIL Copper Tube Aluminum Plate Fin Face Area sq ft No of Rows 6 1 1 6 1 1 ...

Page 6: ... unit on heating cooling applications If accessory IFR is required for cooling only applic tions locate IFR in fan coil NOTE Refer to unit wiring label for wire colors BRN to BLU and C to Y connections Fig 5 Typical Control Circuit Connections Fig 6 Line Power Connections LEGEND NEC National Electrical Code TB Terminal Board TB Connections Field Wiring Factory Wiring 6 ...

Page 7: ...may result in electrical shock or injury from rotating fan blade Outdoor Fan A reinforced wire mount holds the out door fan assembly in place See Fig 7 for proper mounting positions High Pressure Relief Valve Valve is located in compressor Relief valve opens at a pressure differential of approximately 450 50 psig between suction low side and discharge high side to allow pressure equalization Inter...

Page 8: ...nt AccuRaterT Bypass Type Device See Fig 4 for bypass type AccuRater device components The piston has a refrigerant metering hole through it The retainer forms a stop for the piston in the refrigerant bypass mode and a sealing surface for liquid line flare connection To check clean or replace piston 1 Shut off power to unit 2 Pump down using Pumpdown Procedure section on page 7 3 Remove liquid lin...

Page 9: ... 65 6 10 13 16 19 21 24 27 30 33 36 38 41 70 7 10 13 16 19 21 24 27 30 33 36 39 75 6 9 12 15 18 21 24 28 31 34 37 80 5 8 12 15 18 21 25 28 31 35 85 8 11 15 19 22 26 30 33 90 5 9 13 16 20 24 27 31 95 6 10 14 18 22 25 29 100 8 12 15 20 23 27 105 5 9 13 17 22 26 110 6 11 15 20 25 115 8 14 18 23 LEGEND WB Wet Bulb Do not attempt to charge system under these conditions or refrig erant slugging may occu...

Page 10: ... of the coils Clean coil annually or as required by location and outdoor air conditions Inspect coil monthly and clean as required Fins are NOT continuous through coil sections Dirt and de bris may pass through the first section become trapped be tween the rows of fins and restrict condenser airflow Use a flashlight to determine if dirt or debris has collected between coil sections Clean coil as f...

Page 11: ...TROUBLESHOOTING TROUBLESHOOTING CHART COOLING CYCLE 11 ...

Page 12: ...turer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 1 4 Tab 3a 2a PC 111 Catalog No 563 885 Printed in U S A Form 38HDL 2SI Pg 12 1 99 Replaces 38HDL 1SI ...

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