Page 2 of 19
506874-01
Issue 1140
INSTALLATION
General
The 2SCU13 air conditioner, which will also be referred to
in this instruction as the outdoor unit, uses HCFC-22
refrigerant. This outdoor unit is intended as a replacement
outdoor component for use in residential systems which
include an existing indoor coil which is functioning properly.
It is NOT intended for new installations.
This outdoor unit is:
•
shipped from the factory with nitrogen holding charge
that must be purged from the unit;
•
designed for use with HCFC-22 refrigerant only;
•
designed for use in systems that use either a RFC
device (orifice) included with outdoor unit or thermal
expansion valve (TXV). See the 2SCU13 product
specification sheet for approved fixed orifice sizes and
expansion valve kit match ups.
IMPORTANT:
The air conditioning unit must have properly
matched system components including indoor unit and
refrigerant metering device. Mismatched equipment may
have an impact on the operation, performance, reliability,
and warranty of the air conditioning unit.
Read this entire instruction manual, as well as the
instructions supplied in separate equipment, before
starting the installation. Observe and follow all
warnings, cautions, instructional labels, and tags.
Failure to comply with these instructions could result
in an unsafe condition and/or premature component
failure.
These instructions are intended as a general guide only for
use by qualified personnel and do not supersede any national
or local codes in any way. The installation must comply with
all provincial, state, and local codes as well as the National
Electrical Code (U.S.) or Canadian Electrical Code (Canada).
Compliance should be determined prior to installation.
When servicing or repairing HVAC components, ensure the
fasteners are appropriately tightened. Table 1 shows torque
values for fasteners.
I
nspection of Shipment
Upon receipt of equipment, carefully inspect it for possible
shipping damage. If damage is found, it should be noted on
the carrier’s freight bill. Take special care to examine the
unit inside the carton if the carton is damaged. Any
concealed damage discovered should be reported to the
last carrier immediately, preferably in writing, and should
include a request for inspection by the carrier’s agent.
If any damages are discovered and reported to the carrier
DO NOT INSTALL THE UNIT
, as claim may be denied.
Check the unit rating plate to confirm specifications are
as ordered.
Location of Unit
Outdoor units operate under a wide range of weather
conditions; therefore, multiple factors must be considered
when positioning the unit. The unit must be positioned to
give adequate clearances for sufficient airflow and servicing.
Refer to Figure 1 for installation clearances.
Slab Mounting
When installing unit at grade level, install on level slab high
enough so that water from higher ground will not collect
around unit (see Figure 2).
Roof Mounting
Install unit at a minimum of 4" above surface of the roof.
Care must be taken to ensure weight of unit is properly
distributed over roof joists and rafters. Either redwood or
steel supports are recommended.
Figure 1
Installation Clearances
* A service clearance of 30" must be maintained on one of the sides adjacent
to the control box. Clearance to one of the other three sides must be 36".
Clearance to one of the remaining two sides may be 12" and the final side
may be 6".
A clearance of 24" must be maintained between units.
48" clearance required on top of unit. Maximum soffit overhang is 36".
Torque Table
Table 1
Fastener
Torque
Stem Caps
8 ft. lbs.
Service Port Caps
8 ft. lbs.
Sheet Metal Screws
16 in. lbs.
#8 Machine Screws
16 in. lbs.
#10 Machine Screws
28 in. lbs.
Compressor Bolts
90 in. lbs.