Carrier 38BYC Installation And Start-Up Instructions Manual page 2

NOTE: Avoid contact between tubing and structure
_-- OUTDOOR WALL--_ INDOOR WALL_"
-_. CAULK
lq/N 7/_ vAPOR TUBE
SULATi
THROUGH THE WALL
HANGER STRAP*_ l _lr'f--JOIST
(AROUNDVAPOR_
TUBE ONLY) _,,\ /_ INSULATION
i __.-VAPOR TUBE
............................. ()
r' MtN. --I
I_
L LIQUID TUBE
SUSPENSION
A94028
Fig. 2--Connecting Tubing Installation
_NSTALLATION
Step l--Check Equipment and Job Site
L NPA(K UNIT
Move to final location, Remove carton, taking care not to damage
uniL
]:NSPECT EQUIPMENT
File claim with shipping company prior to installation if shipment
is damaged or incomplete. Locate unit rating plate on unit service
panel. It contains int'ornaation needed to properly install unit.
Check rating plate to be sure unit matches job specifications.
Step 2--Bnstall On A Solid, Level Mounting Pad
[f conditions or local codes require the unit be attached to pad,
tiedown bolts should be used and fastened through knockouts
provided
in unit base pan. Refer to unit mounting
pattern in Fig. 3
to detem_ine base pan size and knockout hole location.
On rooftop applications, mount on level platform or _?ame. Place
unit above a load bearing wall and isolate unit and robing set fi'om
strocture. 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 baft'les to achieve adequate defrost. Consult Low Ambient
Guideline for wind baffle construction.
NOTE: Unit must be level to within ÷ 2° (÷ 3/8 inJft) per
compressor manufacturer specifications.
Step 3--Clearance Requirements
When installing, allow sufficient space for airflow cleaIance,
wiring, refrigerant piping, and service Allow 30-in clearance to
service end of unit and 48 in above uniL For proper airflow, a 6=in
clearance or* 1 side of unit and 12 in on all remaining sides must
be maintained, Maintain a distance of 24 in between units
Position so water, snow, or ice from roof or eaves cannot Pall
directly on unit
I
1
C
1
I
I 3/8"D (953) TIEDOWN
KNOCKOUTS (2) PLACES
B .I
UNIT
SRZE
018-024
030°060
A94199
Dimensions
On.)
NINIMUM TIEDOWN KNOCKOUT LOCATIONS
MOUNTING-PAD
DIMENSIONS A B C
22-112 X 22-1/2 3-11116 18-1/8 14-3/8
30 X 30 6-1/2 23-1/2 20
Fig. 3--Mounting Unit to Pad
On rooftop applications, locate unit at least 6 in. above roof
surface.
Step 4-==Operating Ambient
The minimum outdoor operating ambient in cooling mode is 55°F,
and the maximum outdoor operating ambient in cooling mode is
125°F The maximum outdoor operating ambient in heating mode
is 66°F,
Step 5--Elevate Unit
Accumulation of water and ice in base pan may cause
equipment damage.
In areas where prolonged freezing temperatures are encountered,
elevate unit per local climate and code requirements to provide
clearance above estimated snowfidl level and ensure adequate
drainage of unit
Step 6--Remove Indoor AccuRater® Piston and Install
TXV
For proper unit operation and reliability, units must be
installed with field supplied hard shutoff TXV Do not install
with evaporator coils having capiltaQ" robe metering devices
or pistons.
For TXV kit part number and charging instructions, refer to TXV
label in outdoor unit If indoor unit (fire coil) comes f_cto_
equipped with a bi-flow hard shutoff TXV, no TXV change is
required,