Carrier 38TRA user manual

Summary of the content on the page No. 1

38TRA
Air Conditioning Unit
Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation.
SAFETY CONSIDERATIONS
Improperinstallation,adjustment,alteration,service,maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause personal injury or property damage.
Consultaqualifiedinstaller,serviceagency,oryourdistributoror
branch for information or assistance. The qualified installer or
agency must use factor

Summary of the content on the page No. 2

AIR DISCHARGE AIR IN 3 /8" DIA TIEDOWN KNOCKOUTS (2) PLACES IN BASEPAN NOTES: 1. ALLOW 30″ CLEARANCE TO SERVICE END OF UNIT, 48″ ABOVE UNIT, 6″ ON ONE SIDE, 12″ ON REMAINING SIDE, AND 24″ BETWEEN UNITS FOR PROPER AIRFLOW. AIR IN D 2. MINIMUM OUTDOOR OPERATING AMBIENT IN COOLING MODE IS C L 55° F (UNLESS LOW AMBIENT CONTROL IS USED) MAX 125° F. 5. SERIES DESIGNATION IS THE 13TH POSITION OF THE UNIT E MODEL NUMBER. 6. CENTER OF GRAVITY SERIAL PROD MO

Summary of the content on the page No. 3

INSTALL SOLENOID VALVE IN LIQUID TUBE NOTE: AVOID CONTACT BETWEEN TUBING AND STRUCTURE INDOOR WALL Solenoid valve must be energized during evacuation for OUTDOOR WALL effective evacuation. CAULK Before making liquid tube connections, install factory-supplied solenoidvalveonindoorliquidfitting.(SeeFig.4.)Besuretouse flare adapter supplied with the indoor coil when making connec- tions. INSULATION If a field-supplied control power source is needed when adding solenoid, wiring must comply with lo

Summary of the content on the page No. 4

bearingbrazingmaterial.Consultlocalcoderequirements.Refrig- Use No. 18 AWG color-coded, insulated (35° C minimum) wire. erant tubing and indoor coil are now ready for leak testing. This If thermostat is located more than 100 ft from unit (as measured check should include all field and factory joints. along the control voltage wires), use No. 16 AWG color-coded wire to avoid excessive voltage drop. Step 5—Make Electrical Connections Use furnace transformer, fan coil transformer, or accessory tran

Summary of the content on the page No. 5

TRANS THERMOSTAT SEE NOTE 2 SUBASE TRANS MIN 60VA 4 RH LEAVE JUMPER ON SUBASE R RC (RH TO RC) LLS LLS B NC NC Y Y 1 Y 2 TO IFM LINE Y C TO IFM LINE VOLTAGE C VOLTAGE BLU BRN C POWER BLU BRN POWER SUPPLY SUPPLY COND UNIT G G IFR IFR W 1 A HC 1 HC W 2 2 W ARRANGEMENT A–COOLING ONLY ARRANGEMENT C–1 TRANSFORMER; COOLING AND 2-STAGE HEATING TRANS : NOTES 1. REFER TO UNIT LABEL WIRING DIAGRAM FOR SEE NOTE 2 4 WIRE COLORS. IFR, IFM AND LLS ARE LOCATED ADD JUMPER INDOORS ON HEATING-CO

Summary of the content on the page No. 6

Copyright 1993 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 33026c Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 101 Catalog No. 563-793 Printed in U.S.A. Form 38TRA-3SI Pg 6 1-94 Replaces: 38TRA-2SI Tab 3a 2a