Lennox 2SHP13 Series User manual

# 48306B006 Page 1
Save these instructions for future reference
INSTALLATION AND MAINTENANCE
INSTRUCTIONS
2SHP13 Series
Split System Heat Pump
Sharp metal edges can cause injury. When
installing the unit, use care to avoid sharp
edges.
WARNING
Installation and servicing of air conditioning
equipment can be hazardous due to internal
refrigerant pressure and live electrical com-
ponents. Only trained and qualified service
personnel should install or service this equip-
ment. Installation and service performed by
unqualified persons can result in property
damage, personal injury, or death.
WARNING
Risk 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, or death.
WARNING
The equipment covered in this manual is to be installed by trained and experienced
service and installation technicians. Improper installation, modification, service, or
use can cause electrical shock, fire, explosion, or other conditions which may cause
personal injury, death, or property damage. Use appropriate safety gear including
safety glasses and gloves when installing this equipment.
WARNING
Manufactured By
A.A.C.
A Lennox International Inc. Company
421 Monroe Street
Bellevue, OH 44811
TABLE OF CONTENTS
INSTALLATION ...................................... 2
START-UP ............................................. 11
OPERATION ........................................ 15
MAINTENANCE ................................... 17
HOMEOWNER INFORMATION ........... 18
CONNECTION DIAGRAMS ................. 21
WARRANTY ......................................... 23
*48306B006*

Page 2 # 48306B006
INSTALLATION 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 servic-
ing. 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.
When servicing or repairing HVAC components, ensure
the fasteners are appropriately tightened. Table 1 shows
torque values for fasteners.
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.
• Place a sound-absorbing material, such as Isomode,
under the unit if it will be installed in a location or
position that will transmit sound or vibration to the
living area or adjacent buildings.
• Install the unit high enough above the ground or roof
to allow adequate drainage of defrost water and
prevent ice buildup.
• In heavy snow areas, do not locate the unit where
drifting snow will occur. The unit base should be
elevated above the depth of average snows.
NOTE: Elevation of the unit may be accomplished by
constructing a frame using suitable materials. If a
support frame is constructed, it must not block drain
holes in unit base.
• When installed in areas where low ambient tempera-
tures exist, locate unit so winter prevailing winds do
not blow directly into outdoor coil.
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 *"
Table 1
Torque Table
renetsaF euqroT
spaCmetS.sbl.tf8
spaCtroPecivreS .sbl.tf8
swercSlateMteehS.sbl.ni61
swercSenihcaM8# .sbl.ni61
swercSenihcaM01#.sbl.ni82
stloBrosserpmoC .sbl.ni09

# 48306B006 Page 3
• Locate unit away from overhanging roof lines which would
allow water or ice to drop on, or in font of, coil or into unit.
Slab Mounting
When installing a unit at grade level, install on slab high
enough above grade so that water from higher ground will
not collect around the unit (see Figure 2). Slab should have
a slope tolerance away from the building of 2° or 2" per 5'.
This will prevent ice from building up under the unit during a
defrost cycle. Refer to following roof mounting section for
barrier construction if unit must face prevailing winter winds.
Unit must be grounded in accordance with
national and local codes. Failure to ground unit
properly can result in personal injury or death.
WARNING
Refer to the furnace or blower 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 power supply to unit from a properly
sized disconnect switch. Any excess high voltage field
wiring should be trimmed or secured away from the
low voltage field wiring.
2. Ground unit at unit disconnect switch or to an earth
ground. To facilitate conduit, a hole is in the bottom of the
control box. Connect conduit to the control box using a
proper conduit fitting. Units are approved for use only with
copper conductors. 24V Class II circuit connections are
made in the low voltage junction box. A complete unit
wiring diagram is located inside the unit control box cover
(see also pages 20 and 21 of this instruction).
Figure 3
Wind Barrier Construction
Prevailing Winter Winds
24"
Wind Barrier
Inlet Air
Inlet Air
Inlet Air
Figure 2
Slab Mounting
2° or 2" per 5' slope tolerance away from building
structure.
Discharge Air
Mounting Slab
Ground Level
Building
Structure
Roof Mounting
Install unit at a minimum of 6" above surface of the roof to
avoid ice buildup around the unit. Locate the unit above a
load bearing wall or area of the roof that can adequately
support the unit. Consult local codes for rooftop applications.
If unit coil cannot be mounted away from prevailing winter
winds, a wind barrier should be constructed (see Figure 3).
Size the barrier at least the same height and width as the
outdoor unit. Mount barrier 24" from the sides of the unit in
the direction of the prevailing winds.
Electrical Wiring
All field wiring must be done in accordance with the
National Electrical Code (NEC) recommendations,
Canadian Electrical Code (CEC) and CSA Standards, or
local codes, where applicable.
Line voltage is present at all components
when unit is not in operation on units with
single pole contactors. Disconnect all remote
electric power supplies before opening access
panel. Unit may have multiple power supplies.
Failure to disconnect all power supplies could
result in personal injury or death.
WARNING

Page 4 # 48306B006
Figure 4
Thermostat Designations
(Some connections may not apply.
Refer to specific thermostat and indoor unit.)
Do not connect C (common) connection between
indoor unit and thermostat except when required by
the indoor thermostat. Refer to thermostat installation
instructions. C (common) connection between indoor
unit and outdoor unit required for proper operation.
Without Auxiliary Heat
With Auxiliary Heat
3. Install room thermostat on an inside wall that is not
subject to drafts, direct sunshine, or other heat sources.
4. Install low voltage wiring from outdoor to indoor unit
and from thermostat to indoor unit (see Figure 4).
5. Do not bundle any excess 24V control wire inside control
box. Run control wire through installed wire tie and tighten
wire tie to provide low voltage strain relief and to maintain
separation of field-installed low and high voltage circuits.
Table 2
Refrigerant Line Set Diameters (in.)
For installations exceeding 50', contact
Technical Services at [phone].
eniLnoitcuS
HUTB eziSdnahtgneLteSeniL
.tf21 .tf52 .tf05 .tf57 .tf001
000,814/34/34/34/34/3
000,42 4/3 4/3 4/3 4/3 8/7
000,034/34/34/38/78/7
000,63 8/7 8/7 8/7 8/7 8/1-1
000,248/78/78/78/1-18/1-1
000,84 8/7 8/7 8/7 8/1-1 8/1-1
000,068/1-18/1-18/1-18/1-18/1-1
eniLdiuqiL
HUTB eziSdnahtgneLteSeniL
.tf21 .tf52 .tf05 .tf57 .tf001
000,818/38/38/38/38/3
000,42 8/3 8/3 8/3 8/3 8/3
000,038/38/38/38/32/1
000,63 8/3 8/3 8/3 8/3 2/1
000,248/38/38/32/12/1
000,84 8/3 8/3 8/3 2/1 2/1
000,068/38/38/32/12/1
Refrigerant Piping
Field refrigerant piping consists of liquid and suction lines
from the outdoor unit (sweat connections) to the indoor
coil (flare or sweat connections).
Select line set diameters from Table 2 to ensure that oil
returns to the compressor. Size vertical suction riser to
maintain minimum velocity at minimum capacity. Recom-
mended line length is 50' or less. If more than 50' line set is
required, contact Technical Services at [phone].
Table 2 shows the diameters for line sets up to 100' although
vertical lift applications and trapping requirements need to be
reviewed with Technical Services for line sets over 50'.

# 48306B006 Page 5
Installing Refrigerant Line
During the installation of an air conditioning system, it is
important to properly isolate the refrigerant line to prevent
unnecessary vibration. Line set contact with the structure
(wall, ceiling, or floor) may cause objectionable noise
when vibration is translated into sound. As a result, more
energy or vibration can be expected. Close attention to
line set isolation must be observed.
Following are some points 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, not at the original installation. Install the unit as far as
possible from the property line. When possible, do not
install the unit directly outside a bedroom window. Glass
has a very high level of sound transmission. Figure 5
shows how to place the outdoor unit and line set to reduce
line set vibration.
Line Set Isolation
Illustrations on the pages 6 and 7 demonstrate procedures
which ensure proper refrigerant line set isolation. Figure 6
shows how to install line sets on horizontal runs. Figure 7
shows how to make a transition from horizontal to vertical.
Figure 8 shows how to install line sets on vertical runs.
Brazing Connection Procedure
1. Cut ends of refrigerant lines square (free from nicks
or dents). Debur the ends. The pipe must remain
round; do not pinch end of line.
2. Before making line set connections, use dry nitrogen to
purge the refrigerant piping. This will help to prevent
oxidation and the introduction of moisture into the system.
3. Use silver alloy brazing rods (5% or 6% silver alloy for
copper-to-copper brazing or 45% silver alloy for
copper-to-brass or copper-to-steel brazing) which are
rated for use with HCFC-22 refrigerant.
4. Remove the Schrader core assemblies before brazing
to protect them from damage due to extreme heat.
Replace the cores when brazing is complete.
5. Wrap a wet cloth around the valve body and copper tube
stub to protect them from heat damage during brazing.
Wrap another wet cloth underneath the valve body to
protect the base paint.
6. Braze the line set to the service valve. Quench the joints
with water or a wet cloth to prevent heat damage to the
valve core and opening port. The tube end must stay
bottomed in the fitting during final assembly to
ensure proper seating, sealing, and rigidity.
7. Install the factory-supplied fixed orifice (or thermal
expansion valve which is sold separately and which is
approved for use with HCFC-22 refrigerant) in the
liquid line at the indoor coil.
Refrigerant Metering Device
2SHP13 units are designed for use with either fixed orifice
or TXV systems. Refer to the appropriate following section
for information on installing the chosen refrigerant meter-
ing device.
Fixed Orifice Systems
2SHP13 units are shipped with a fixed orifice refrigerant
metering device. Replace the existing indoor unit fixed
orifice with the orifice supplied with this unit. Place the
supplied fixed orifice sticker on the indoor cabinet after
installation. See Table 3 on page 7 for the proper fixed
orifice size for each unit. In nonstandard applications, the
provided fixed orifice may not be appropriately sized.
Install the fixed orifice as shown in Figure 9 on page 7. Do not
twist cap tubes when loosening the seal nut from the orifice
housing. Use wrench to back up the distributor.
Outside Unit Placement
and Installation
Figure 5
Install unit away
from windows
Two 90° elbows installed in lineset
will reduce lineset vibration

Page 6 # 48306B006
Figure 6
To hang line set from joist or rafter,
use either metal strapping material
or anchored heavy nylon wire ties.
Strapping Material
(around vapor line only)
8’
8’
Tape or Wire Tie
Strap the vapor line to the joist or rafter
at 8 intervals then strap the liquid line
to the vapor line.
’
Floor Joist or
Roof Rafter
Metal Sleeve
Floor Joist or Roof Rafter
Tape or Wire Tie
Wire Tie
(around vapor line only)
Refrigerant Line Sets: Installing Horizontal Runs
Figure 7
Refrigerant Line Sets: Transition from Vertical to Horizontal
Anchored
Heavy Nylon
Wire Tie
Wall
Stud
Metal Sleeve Vapor Line Wrapped
in Armaflex
–
Liquid Line
Wall
Stud
Automotive
Muffler-Type
Hanger
Strap Liquid
Line to Vapor
Line
Metal Sleeve Vapor Line Wrapped
in Armaflex
–
Liquid Line
Strap Liquid
Line to Vapor
Line

# 48306B006 Page 7
Figure 8
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
Wire Tie
Inside Wall
Strap
Sleeve
Wire Tie
Wire Tie
Strap
Wood Block
Sleeve
Vapor Line Wrapped
with Armaflex
Liquid Line
Caulk
PVC Pipe Fiberglass
Insulation
Outside Wall
IMPORTANT:
Refrigerant
lines must not
contact structure.
NOTE: Similar installation practices
should be used if line set is to be
installed on exterior of outside wall.
Fixed Orifice Data
Table 3
ledoM traP
rebmuN
llirD
eziS
81-31PHS280-484001750.
42-31PHS2 11-484001 160.
03-31PHS212-484001270.
63-31PHS2 32-484001 470.
24-31PHS233-484001680.
84-31PHS2 53-484001 880.
06-31PHS273-484001090.
Metering Device Installation
Figure 9
If installing an expansion valve on an indoor coil that
previously used a fixed orifice, remove orifice before
installing valve.

Page 8 # 48306B006
Expansion Valve Systems
Expansion valves equipped with Chatleff-type fittings are
available from the manufacturer. See Table 4 for proper
TXV for each unit.
To install an expansion valve (see Figure 9 on page 7):
1. Separate the distributor assembly and remove 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. Overtightening
will crush the teflon seal and may cause a leak.
2. Attach liquid line portion of distributor assembly along
with new teflon seal to the inlet of the expansion
valve. Tighten to 20 – 30 ft. lbs. Use backup wrench
on all wrench flats. Overtightening will crush the
teflon seal and may cause a leak.
3. Connect the external equalizer line to the equalizer
port on the suction line and tighten to 8 ft. lbs.
4. Strap the superheat sensing bulb to the suction header.
If installing an expansion valve on an indoor coil that
previously used a fixed orifice, be sure to remove the
existing fixed orifice. Failure to remove a fixed orifice
when installing an expansion valve to the indoor coil will
result in improper operation and damage to the system.
Manifold Gauge Set
When checking the unit charge, use a manifold gauge set
that is equipped with “low loss” hoses. Do not use a manifold
gauge set with anything other than a “low loss” hose.
Liquid and Suction Line Service Valves
The liquid line and suction line service valves (see Figure
10) and service ports are used for leak testing, evacuat-
ing, charging, and checking charge.
Each valve is equipped with a service port which has a
factory-installed Schrader valve. A service port cap
protects the Schrader valve from contamination and
serves as the primary leak seal.
To Access the Schrader Port:
1. Remove the service port cap with an adjustable wrench.
2. Connect gauge to the service port.
3. When testing is completed, replace service port cap.
Tighten finger tight, then an additional 1/6 turn.
To Open Liquid or Suction Line Service Valve:
1. Remove stem cap with an adjustable wrench.
2. Use a service 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 valves.
3. Replace the stem cap. Tighten finger tight, then
tighten an additional 1/6 turn.
Figure 10
Service Valve
Valve Closed
Valve Open
Schrader
Valve
Schrader valve open
to line set when valve is
closed (front seated)
Service Port
Service
Port Cap
Insert hex
wrench here
(valve front seated)
To outdoor coil
To indoor coil
To indoor coil
Stem Cap
Service Port
To outdoor coil
Service Port Cap
Stem Cap
Insert hex
wrench here
Table 4
TXV Data
ledoM traP
rebmuN
63-,03-,42-,81-31PHS210VXT2H
84-,24-31PHS2 20VXT2H
06-31PHS230VXT2H

# 48306B006 Page 9
Leak Testing
After the line set has been connected to the indoor and
outdoor units, the line set connections and indoor unit
must be checked for leaks.
To Close Liquid or Suction Line Service Valve:
1. Remove the stem cap with an adjustable wrench.
2. Use a service wrench with a hex-head extension to turn
the stem clockwise to seat the valve. Tighten firmly.
3. Replace the stem cap. Tighten finger tight, then
tighten an additional 1/6 turn.
Suction Line (Ball Type) Service Valve
Suction line (ball type) service valves function the same
way as the other valves; the difference is in the construc-
tion (see Figure 11).
The ball valve is equipped with a service port with a
factory-installed Schrader valve. A service port cap
protects the Schrader valve from contamination and
serves as the primary seal.
Ball Type Service Valve
(Valve Open)
Figure 11
Use adjustable wrench. To open, rotate stem
counterclockwise 1/4 turn (90°). To close, rotate
stem clockwise 1/4 turn (90°).
Refrigerant can be harmful if inhaled. Refrigerant
must always be used and recovered responsibly.
Incorrect or irresponsible use of refrigerant can
result in personal injury or death.
WARNING
Never use oxygen to pressurize refrigeration
or air conditioning systems. Oxygen will ex-
plode on contact with oil and could cause
personal injury or death.
WARNING
Using an Electronic Leak Detector
1. Connect the high pressure hose of the manifold
gauge set to the suction valve service port. (Normally
the high pressure hose is connected to the liquid line
port; however, connecting it to the suction ports helps
to protect the manifold gauge set from damage
caused by high pressure.)
2. With both manifold valves closed, connect the cylin-
der of HCFC-22 refrigerant. Open the valve on the
HCFC-22 cylinder (vapor only).
3. Open the high pressure side of the manifold to allow
HCFC-22 into the line set and indoor unit. Weigh in a
trace amount of HCFC-22. (A trace amount is a
maximum of 2 oz. of refrigerant or 3 lbs. pressure.)
Close the valve on the HCFC-22 cylinder and the
valve on the high pressure side of the manifold gauge
set. Disconnect the HCFC-22 cylinder.
4. Connect a cylinder of nitrogen with a pressure regulat-
ing valve to the center port of the manifold gauge set.
When using high pressure gas such as nitrogen
for this purpose, be sure to use a regulator that
can control the pressure down to 1 or 2 psig.
5. Adjust nitrogen pressure to 150 psig. Open the valve
on the high side of the manifold gauge set to pressur-
ize the line set and the indoor coil.
Evacuation
Evacuating the system of noncondensables is critical for
proper operation of the unit. Noncondensables are defined

Page 10 # 48306B006
Do not use a compressor to evacuate a sys-
tem. Avoid deep vacuum operation. Extremely
low vacuums can cause internal arcing and
compressor failure. Danger of equipment
damage. Damage caused by deep vacuum
operation will void warranty.
WARNING
as any gas that will not condense under temperatures and
pressures present during operation of an air conditioning
system. Noncondensables and water vapor combine with
refrigerant to produce substances that corrode copper
piping and compressor parts.
Use a thermocouple or thermistor electronic vacuum
gauge that is calibrated in microns. Use an instrument that
reads down to 50 microns.
1. Connect the manifold gauge set to the service valve
ports as follows:
• Low pressure gauge to suction line service valve
• High pressure gauge to liquid line service valve
2. Connect micron gauge.
3. Connect the vacuum pump (with vacuum gauge) to
the center port of the manifold gauge set.
4. Open both manifold valves and start vacuum pump.
5. Evacuate the line set and indoor unit to a minimum of
500 microns or lower. During the early stages of
evacuation, it is desirable to close the manifold gauge
valve at least once to determine if there is a rapid rise
in pressure. A rapid rise in pressure indicates a
relatively large leak. If this occurs, the leak testing
procedure must be repeated.
6. When 500 microns or lower is maintained, close the
manifold gauge valves, turn off the vacuum pump, and
disconnect the manifold gauge center port hose from
the vacuum pump. Attach the manifold gauge center
port hose to a nitrogen cylinder with pressure regulator
set to 150 psig and purge the hose. Open the manifold
gauge valves to break the vacuum in the line set and
indoor unit. Close the manifold gauge valves.
7. Shut off the nitrogen cylinder and remove the manifold
gauge 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 evacuate the line
set and indoor unit until 500 microns is maintained
within a 20-minute period after shutting off the
vacuum pump and closing the manifold gauge valves.
9. When the requirements above have been met,
disconnect the manifold hose from the vacuum pump.
Open the service valves to break the vacuum in the
line set and indoor unit.