Carrier 38BR Installation And Start-Up Instructions

Installation and Start-Up Instructions
NOTE: Read the entire instruction manual before starting the
installation. Refer to Split-System Air Conditioning Installation
and Start-Up Instructions (included in this packet).
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause personal injury or property damage.
Consult a qualified installer, service agency, or your distributor or
branch for information or assistance. The qualified installer or
agency must use factory-authorized kits or accessories when
modifying this product. Refer to the individual instructions pack-
aged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all
warnings or cautions attached to the unit. Consult local building
codes and National Electrical Code (NEC) for special require-
ments.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage.
Before installing or servicing system, always turn off main
power to system. There may be more than 1 disconnect
switch. Turn off accessory heater power if applicable. Elec-
trical shock can cause personal injury or death.
INSTALLATION
Step 1—Mounting Pad
Refer to Table 1 for mounting pad dimensions.
Step 2—Refrigerant Tubing
Refer to Table 2 for proper refrigerant tube diameters.
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. 533-838
Tab 3a 2a
Split-System Air Conditioner
SUCTION LINE CONN
.
UNIT SIZE
024-060
Note: Mounting pad may differ by series.
Table 2—Refrigerant Connections and Recom-
mended Liquid and Vapor Tube Diameters (In.)
UNIT
SIZE
024
030, 036
042, 048
060
Note: Tube diameters are for lengths up to 50 ft. For tubing lengths greater
than 50 ft, consult your local distributor or the Long-Line Application Guideline.
Step 3—Install Solenoid Valve In Liquid Tube (If Re-
quired)
Not all applications require use of a liquid line solenoid valve.
If your unit has been shipped with a liquid line solenoid valve
in the unit, it must be installed for performance enhancement.
The liquid line solenoid valve must be energized during
evacuation for complete removal of refrigerant.
Before making liquid tube connections, install factory-supplied
solenoid valve on indoor liquid fitting. (See Fig. 2.) Be sure to use
flare adapter supplied with the indoor coil when making connec-
tions.
Printed in U.S.A. Form 38BR-3SI
AIR DISCHARGE
LIQUID LINE CONN
Fig. 1—Unit Connections
Table 1—Mounting Pad Dimensions
MINIMUM DIMENSIONS (IN.)
LIQUID
Connection Tube
Diameter Diameter
3/8 3/8
3/8 3/8
3/8 3/8
3/8 3/8
Pg 1 5-94
38BR
FIELD POWER
SUPPLY CONN
" DIA HOLE WITH
7
⁄
8
" DIA KNOCKOUT
1
1 ⁄
8
" DIA
3
AND 1 ⁄
8
KNOCKOUT
FIELD CONTROL
SUPPLY CONN
" DIA HOLE
7
⁄
8
A93578
30 X 30
VAPOR
Connection Tube
Diameter Diameter
5/8 5/8
3/4 3/4
7/8 7/8
7/8 1-1/8
Replaces: 38BR-2SI