INSTALLATION
Step 1—Check Equipment and Job Site
UNPACK UNIT — Move to final location. Remove carton taking
care not to damage unit.
INSPECT EQUIPMENT — File claim with shipping company
prior to installation if shipment is damaged or incomplete. Locate
unit rating plate on unit service panel. (See Fig. 2.) It contains
information needed to properly install unit. Check rating plate to
be sure unit matches job specifications.
Step 2—Install on a Solid, Level Mounting Pad
If conditions or local codes require the unit be attached to a pad,
tie down bolts should be used and fastened through knockouts
provided in unit base pan. Refer to unit mounting pattern shown in
Fig. 2 to determine base pan size and knockout hole location.
On rooftop applications, mount on level platform or frame. Place
unit above a load-bearing wall and isolate unit and tubing set from
structure. Arrange supporting members to adequately support unit
and minimize transmission of vibration to building. Consult local
codes governing rooftop applications.
Roof mounted units exposed to winds above 5 mph may require
wind baffles. Consult Low-Ambient Guideline for wind baffle
construction.
NOTE:
Unit must be level to within ±2° per compressor manu-
facturer specifications.
Table 1—Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)
UNIT
SIZE
LIQUID
VAPOR
VAPOR (LONG LINE)
Connection Diameter
Tube Diameter
Connection Diameter
Tube Diameter
Connection Diameter
Tube Diameter
018, 024
3/8
3/8
5/8
5/8
5/8
3/4
030, 036
3/8
3/8
3/4
3/4
3/4
7/8
042, 048
3/8
3/8
7/8
7/8
7/8
1-1/8
060
3/8
3/8
7/8
1-1/8
7/8
1-1/8
Notes: 1. Tube diameters are for lengths up to 50 ft. For tube sets over 50 ft. consult Residential Long-Line Application Guideline.
2. Do not apply capillary tube indoor coils to these units.
Fig. 2—Unit Reference Drawing
MODEL 38TKB
A
B
C
D
In.
In.
In.
In.
018, 024, 030, 036
22-1/2
27-1/2
2-13/16
6-15/16
042, 048, 060
30
34-15/16
4
9-3/4
A91055
AIR DISCHARGE
FIELD CONTROL SUPPLY
CONN
7
/
8
″
(22.22) DIA HOLE
AIR DISCHARGE
AIR DISCHARGE
AIR IN
AIR IN
UNIT RATING PLATE
1. ALLOW 30
″
(762)
CLEARANCE TO SERVICE END OF
UNIT, 48
″
(1219) ABOVE UNIT, 6
″
(152) ON ONE SIDE, 12
″
(306)
ON REMAINING SIDE, AND 24
″
(610)
BETWEEN
UNITS FOR PROPER AIRFLOW.
2. MINIMUM OUTDOOR OPERATING AMBIENT IN COOLING MODE IS
55°F (12.8°C), (UNLESS LOW AMBIENT CONTROL IS USED) MAX 125°F (51.7°C).
NOTES:
ACCESS
PANEL
AIR IN
C
L
B
C
3/8
"
(9.53) DIA TIEDOWN
KNOCKOUTS IN BASEPAN
(2) PLACES
3. MAXIMUM OUTDOOR OPERATING AMBIENT IN HEATING MODE IS 66°F (18.9°C).
4. DIMENSIONS IN PARENTHESIS ARE IN MILLIMETERS.
5. SERIES DESIGNATION IS THE 13TH POSITION OF THE UNIT
MODEL NUMBER.
D
UNIT MOUNTING PATTERN
VIEW FROM TOP
FIELD POWER SUPPLY CONN
7
/
8
″
(22.22) DIA HOLE WITH
1
1
/
8
″
(28.57) DIA KNOCKOUT
(ALL SIZES) AND 1
3
/
8
″
(34.92)
DIA KNOCKOUT (036 THRU 060
SIZES ONLY)
3/8
″
(9.53) DIA LIQUID
LINE CONNECTION
1
9
/
16
″
(39.6)
2
1
/
2
″
(63.7)
10
1
/
2
″
(266.7)
4
3
/
16
″
(106.3)
1
3
/
4
″
(44.6)
8
3
/
16
″
(207.9)
A
INDIANAPOLIS IN
46206
313948-401
REV A
MAX CKT-BKR
MAX HACR CKT-BKR
MAX FUSE
TYPE
MINIMUM CIRCUIT AMPS
LO
HI
DESIGN/TEST PRESSURE GAGE
FLA
HZ
PH
VOLTS AC
LRA
RLA
HZ
PH
VOLTS AC
MAX
PH
LBS
PISTON
MODEL
PROD
SERIAL
N/A
USA
N/A
CANADA
MAX OVERCURRENT PROTECTIVE DEVICE
kPa
kPa
PSI
PSI
FAN MOTOR
COMPRESSOR
SUITABLE FOR OUTDOOR USE
MIN
HZ
Kg
VOLTS
POWER SUPPLY
ID
OD
FACTORY CHARGED R-22
®
®
PERMISSIBLE VOLTAGE AT UNIT
CARRIER CORP
2
