Carrier 38CKB user manual

Summary of the content on the page No. 1

38CKB—50 Hz
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 death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or

Summary of the content on the page No. 2

AIR IN NOTES: AIR 1. Allow 30 in. (762) clearance to service sides of unit, 48 in. DISCHARGE (1219.2) above unit, 6 in. (152.4) on one side, 12 in. (304.8) on remaining side, and 24 in. (609.6) between units for proper airflow. 2. Minimum outdoor operating ambient in cooling mode is 55 F (12.8 C), max 115 F (46.1 C). 3. Dimensions in parenthesis are in millimeters. AIR 4. Series designation is the 13th position of the unit model number. IN AIR IN A AIR DISCHARGE

Summary of the content on the page No. 3

Table 1—Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters LIQUID VAPOR UNIT SIZE Connection Dia. Tube Dia. Connection Dia. Tube Dia. In. mm In. mm In. mm In. mm 018, 024 3/8 9.53 3/8 9.53 5/8 15.88 5/8 15.88 036 3/8 9.53 3/8 9.53 3/4 19.05 3/4 19.05 048 3/8 9.53 3/8 9.53 7/8 22.23 7/8 22.23 060 3/8 9.53 3/8 9.53 7/8 22.23 1-1/8 28.58 1. Tube diameters are for lengths up to 50 ft (15.24m). For tube sets over 50 ft (15.24m), consult Long-Line Application Guideline. 2. Do not

Summary of the content on the page No. 4

CONNECT CONTROL WIRING—Route 24-v control wires through control wiring grommet and connect to brown and blue Donotventrefrigeranttoatmosphere.Recoverduringsystem pigtails supplied in unit splice box. (See Fig. 5.) repair or final unit disposal. Use furnace transformer, fan-coil transformer, or accessory trans- former for control power, 24-v/40va minimum. 1. Fully back seat (open) liquid and vapor tube service valves. NOTE: Use of available 24-v accessories may exceed the mini- 2. Unit is shipped

Summary of the content on the page No. 5

THERMOSTAT THERMOSTAT FURNACE R R R MOTOR POWER C M SUPPLY G G G C IFR TRANS C Y Y Y W W / W1 COOLING ONLY ONE STAGE COOLING / GAS HEATING THERMOSTAT FAN COIL THERMOSTAT INDOOR UNIT R R R R C C G G C G G LLS C Y Y Y Y W W2 W W ONE STAGE COOLING / ELECTRIC HEAT ONE STAGE COOLING / HEATING ACCESSORY LIQUID LINE SOLENOID NOTES: 1. Wiring must conform to local codes. 2. LLS required on some units. See specific unit instructions. 3. Transformer required is 24-v, 40-va minimum. A 60-va or externa

Summary of the content on the page No. 6

Copyright 1994 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 38ckbc1s 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. 013-862 Printed in U.S.A. Form 38CKB-C1SI Pg 6 12-94 Replaces: New Tab 3a 2a