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Page 2

# 48387H005

INSTALLATION

Inspection 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

Refer to Figure 1 for installation clearances.

General

Read this entire instruction manual, as well as the
instructions supplied in separate equipment, before
starting the installation. Observe and follow all warn-
ings, 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.

4SCU13LE condensing units use R410A which is an
ozone-friendly HFC refrigerant. The unit must be installed
with a matching indoor coil and line set. 4SCU13LE units
are designed for use in expansion valve (TXV) and fixed
orifice systems. The orifice is shipped with the unit while
the TXV expansion valve must be ordered separately from
the manufacturer. A filter drier approved for use with 410A
is installed in the unit.

IMPORTANT: This product has been designed and manu-
factured to meet ENERGY STAR criteria for energy effi-
ciency when matched with appropriate coil components.
However, proper refrigerant charge and proper air flow are
critical to achieve rated capacity and efficiency. Installation
of this product should follow the manufacturer’s refrigerant
charging and air flow instructions. 

Failure to confirm

proper charge and airflow may reduce energy effi-
ciency and shorten equipment life.

When servicing or repairing HVAC components, ensure
the fasteners are appropriately tightened. Table 1 shows
torque values for fasteners.

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".

36 *

"

36

"

36

"

36 *

"

Slab Mounting

When installing unit at grade level, install on slab high
enough above grade to allow adequate drainage of water
(see Figure 2). Top of slab should be located so runoff
water from higher ground will not collect around unit.
Refer to roof mounting section for barrier construction if
unit must face prevailing winter winds.

Torque Table

Table 1

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9

Summary of Contents for 4SCU13LE Series

Page 1: ...sk of electrical shock Disconnect all remote power supplies before installing or servicing any portion of the system Failure to disconnect power supplies can result in property damage personal injury...

Page 2: ...e is shipped with the unit while the TXV expansion valve must be ordered separately from the manufacturer A filter drier approved for use with 410A is installed in the unit IMPORTANT This product has...

Page 3: ...coil Installation Instructions for additional wiring application diagrams and refer to unit rating plate for minimum circuit ampacity and maximum overcurrent protection size 1 Install line voltage po...

Page 4: ...a new indoor coil and line set the refrigerant connections should be made as outlined in this section If an existing line set and or indoor coil will be used to complete the system refer to this sect...

Page 5: ...s to consider when placing and installing a high efficiency outdoor unit Placement Be aware that some localities are adopting sound ordi nances based on how noisy the unit is at the neighbor s home no...

Page 6: ...por Line Figure 9 Refrigerant Line Sets Installing Vertical Runs new construction shown Outside Wall Wood Block Between Studs IMPORTANT Refrigerant lines must not contact wall Vapor Line Liquid Line W...

Page 7: ...l be sure to empty all existing traps Residual mineral oil can act as an insulator preventing proper heat transfer It can also clog the thermal expansion valve reducing system performance and capacity...

Page 8: ...ore removing the recovery machine When the low side system pressures reach 0 psig close the suction line valve Disconnect all power to the existing outdoor unit Refer to the gauges after shutdown to c...

Page 9: ...the piston orifice and used teflon seal Insert nozzle end of the expansion valve along with a new teflon seal into the distributor and tighten to 20 30 ft lbs Use backup wrench on all wrench flats Ov...

Page 10: ...wrench with a hex head extension to back the stem out counterclockwise as far as it will go Use a 3 16 hex head extension for liquid line service valves and a 5 16 extension for suction line service v...

Page 11: ...r coil 6 After a short period of time open a refrigerant port to make sure that an adequate amount of refrigerant has been added for detection refrigerant requirements will vary with lengths Check all...

Page 12: ...ge hose from the cylinder Open the manifold gauge valves to release the nitrogen from the line set and indoor unit 8 Reconnect the manifold gauge to the vacuum pump turn the pump on and continue to ev...

Page 13: ...tage must be within the range listed on the unit nameplate If not do not start equipment until the power company has been consulted and the voltage condition corrected 6 Set thermostat for cooling dem...

Page 14: ...Table 6 to determine the saturation temperature for the liquid line pressure reading 4 Subtract the liquid line temperature from the satura tion temperature according to the chart to determine subcoo...

Page 15: ...Minor variations in these pres sures may be expected due to differences in installa tions Significant differences could mean that the system is not properly charged or that a problem exists with some...

Page 16: ...8 7 1 3 9 3 1 6 2 3 1 4 1 5 2 3 4 3 1 4 2 3 7 3 1 4 1 3 4 3 1 5 2 3 7 3 1 4 3 3 0 3 1 F 5 9 3 6 3 2 4 1 6 7 3 2 4 1 2 7 3 6 3 1 4 7 3 9 3 1 2 6 3 5 3 1 6 8 3 9 3 1 3 8 3 3 3 1 F 5 0 1 3 1 4 4 4 1 8 2...

Page 17: ...for correct voltage at unit with unit operating 6 Check amp draw outdoor fan motor Unit nameplate _________ Actual _________ NOTE If owner complains of insufficient cooling the unit should be gauged a...

Page 18: ...nician ________________________________________ Nameplate Voltage ______________ Rated Load Ampacity ________ Compressor _______________ Outdoor Fan ___________________ Maximum Fuse or Circuit Breaker...

Page 19: ...L AND LOCAL CODES OUTDOOR FAN F C H 1 2 3 R S C C 2 3 1 EQUIPMENT GROUND HR1 L2 208 230 60 1 L1 K1 1 BLACK YELLOW RED RED C12 BLACK ORANGE B4 PURPLE K1 S4 S24 A4 C Y1 TO 24 VAC POWER SOURCE 20 VA MINI...

Page 20: ...ade by the warrantor this warranty is in lieu of and excludes all other warranties express or implied The warrantor does not authorize any person to provide any other warranty or to assume for it any...

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