Lennox SSB036H4S4 User manual

6/2013 507163-01
*2P62013* *P507163-01*
Page 1
2013 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
WARNING
Improper installation, adjustment, alteration, service or
maintenance can cause personal injury, loss of life, or
damage to property.
Installation and service must be performed by a licensed
professional installer (or equivalent) or a service agency.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
IMPORTANT
This unit must be matched with an indoor coil as speci
fied in Lennox SSB*H4 Product Specification bulletin.
Coils previously charged with HCFC-22 must be
flushed.
NOTICE TO INSTALLER
UNIT PLACEMENT
It is critical for proper unit operation to place outdoor unit on an
elevated surface as described in Unit Placement section on page 7.
BRAZING LINE SET TO SERVICE VALVES
It is imperative to follow the brazing technique illustrated starting on
page 12 to avoid damaging the service valve's internal seals.
INSTALLATION
INSTRUCTIONS
S-CLASS SSB*H4 Units
AIR CONDITIONER UNITS
507163-01
6/2013
Supersedes 506641-01
TABLE OF CONTENTS
Shipping and Packing List 1......................
General 1......................................
Unit Dimensions 2...............................
Model Number Identification 2....................
Unit Parts Arrangement 3........................
Operating Gauge Set and Service Valves 4.........
Recovering Refrigerant from Existing System 6.....
New Unit Placement 7...........................
Removing and Installing Panels 9.................
New or Replacement Line Set 10...................
Brazing Connections 12...........................
Flushing Line Set and Indoor Coil 15................
Installing Indoor Metering Device 16................
Leak Test Line Set and Indoor Coil 17...............
Evacuating Line Set and Indoor Coil 18.............
Electrical 19.....................................
Servicing Units Delivered Void of Charge 21.........
Unit Start-Up 21.................................
System Refrigerant 22............................
System Operation 25.............................
Maintenance 26..................................
Checklists 27....................................
Shipping and Packing List
Check the unit for shipping damage and listed times below
are intact. If damaged, or if parts are missing, immediately
contact the last shipping carrier.
1 - Assembled outdoor unit.
General
Two-stage S-ClassSSB*H4 outdoor units use
HFC-410A refrigerant. This unit must be installed with a
matching indoor coil and line set as outlined in the Product
Specification bulletin. S-Class SSB*H4 outdoor units
are designed for use in expansion valve systems (TXV)
only. They are not designed to be used with other
refrigerant flowcontroldevices. TheProduct Specification
bulletin lists a TXV kit that must be ordered separately.
Litho U.S.A.

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507163-01 05/13
Unit Dimensions - Inches (mm)
ELECTRICAL
INLETS
SIDE VIEW
DISCHARGE AIR
SUCTION LINE
CONNECTION
LIQUID LINE
CONNECTION
4-1/4(1
08)
4-3/4
(121)
1 (25)
2 (51)
SIDE VIEW
C
B
A
D
G
K
J
E
F
UNIT SUPPORT
FEET
BASE WITH ELONGATED LEGS
H
Model
Number A B C D E F G H J K
SSB036H4S4 31 (787) 30-1/2 (775) 35 (889)
13-7/8 (352) 7-3/4 (197) 3-1/4 (83) 27-1/8 (689) 3-5/8 (92) 4-1/2 (114) 20-5/8 (524)
SSB048H4S4 39 (991) 30-1/2 (775) 35 (889)
SSB060H4S4 45 (1143) 35-1/2 (902) 39-3/8 (1001) 16-7/8 (429) 8-3/4 (222) 3-1/8 (79) 30-3/4 (781) 4-5/8 (117) 3-3/4 (95) 26-7/8 (683)
Model Number Identification
SSB Y1036 H 44 S
Major Design Sequence
A = 1st Generation
B = 2nd Generation
Brand/Family
S = S-ClassProduct Line
Unit Type
S = Air Conditioner Outdoor Unit
Nominal Cooling Capacity -
Tons
036 = 3 Tons
048 = 4 Tons
060 = 5 Tons
Cooling Efficiency
H = High Efficiency
Minor Design Sequence
1 = 1st Revision
2 = 2nd Revision
3 = 3rd Revision
Voltage
Y = 208/230V‐3 phase‐60hz
G = 460V‐3 phase‐60hz
Refrigerant Type
4 = HFC-410A
Part Load Capability
S = Part load capabilities with multi-stage operation.
Coil type
4 = Four-sided

Page 3
SSB*H4 SERIES
Typical Unit Parts Arrangement
THREE POLE CONTACTOR (K1)
DUAL RUN CAPACITOR
(C12)
CONTROL PANEL
PLUMBING, SWITCHES AND ELECTRICAL COMPONENTS
LIQUID LINE FILTER
DRIER (SINGLE FLOW)
FIELD CONNECTION
FOR LIQUID LINE SET
LIQUID LINE SERVICE
VALVE
SUCTION LINE
SERVICE VALVE
FIELD CONNECTION
FOR SUCTION LINE
HIGH PRESSURE SWITCH
(MANUAL RESET) (S4)
COMPRESSOR
HARNESS
COMPRESSOR
LOW PRESSURE
SWITCH (S87)
CRANKCASE
THERMOSTAT
(S40)
GROUND)
CRANKCASE HEATER RELAY
(K-191) (G-VOLTAGE UNITS
ONLY)
CRANKCASE HEATER
(HR1)
Figure 1. Typical Parts Arrangements

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507163-01 05/13
WARNING
Electric Shock Hazard. Can cause injury
or death. Unit must be grounded in
accordance with national and local
codes.
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.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
Operating Gauge Set and Service Valves
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
who have jurisdiction before installation.
TORQUE REQUIREMENTS
When servicing or repairing heating, ventilating, and air
conditioning components, ensure the fasteners are
appropriately tightened. Table 1 lists torque values for
fasteners.
IMPORTANT
Only use Allen wrenches of sufficient hardness (50Rc -
Rockwell Harness Scale minimum). Fully insert the
wrench into the valve stem recess.
Service valve stems are factory-torqued (from 9 ft-lbs for
small valves, to 25 ft-lbs for large valves) to prevent
refrigerant loss during shipping and handling. Using an
Allen wrench rated at less than 50Rc risks rounding or
breaking off the wrench, or stripping the valve stem
recess.
See the Lennox Service and Application Notes #C-08-1
for further details and information.
IMPORTANT
To prevent stripping of the various caps used, the
appropriately sized wrench should be used and fitted
snugly over the cap before tightening.
Table 1. Torque Requirements
Parts Recommended Torque
Service valve cap 8 ft.- lb. 11 NM
Sheet metal screws 16 in.- lb. 2 NM
Machine screws #10 28 in.- lb. 3 NM
Compressor bolts 90 in.- lb. 10 NM
Gauge port seal cap 8 ft.- lb. 11 NM
USING MANIFOLD GAUGE SET
When checking the system charge, only use a manifold
gauge set that features low loss anti-blow back fittings.
Manifold gauge set used with HFC-410A refrigerant
systems must be capable of handling the higher system
operating pressures. The gauges should be rated for use
with pressures of 0 - 800 psig on the high side and a low
side of 30” vacuum to 250 psig with dampened speed to
500 psi. Gauge hoses must be rated for use at up to 800
psig of pressure with a 4000 psig burst rating.
OPERATING SERVICE VALVES
The liquid and vapor line service valves are used for
removing refrigerant, flushing, leak testing, evacuating,
checking charge and charging.
Each valve is equipped with a service port which has a
factory-installed valve stem. Figure 2 provides information
on how to access and operating both angle and ball service
valves.

Page 5
SSB*H4 SERIES
(VALVE STEM SHOWN
CLOSED) INSERT HEX
WRENCH HERE
SERVICE PORT CORE
SERVICE PORT CAP
ANGLE-TYPE SERVICE VALVE
(FRONT-SEATED / CLOSED)
SERVICE PORT
CORE
TO OUTDOOR UNIT
STEM CAP
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
TO INDOOR
UNIT
ANGLE-TYPE SERVICE VALVE
(BACK-SEATED / OPENED)
BALL (SHOWN
CLOSED)
SERVICE PORT
CORE
TO INDOOR UNIT
TO OUTDOOR
UNIT
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90°.
TO CLOSE ROTATE STEM
CLOCKWISE 90°.
SERVICE PORT
SERVICE PORT
CAP
STEM CAP
VALVE
STEM
Operating Angle-Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use a service wrench with a hex-head extension (3/16” for liquid line valve sizes and 5/16” for vapor line valve sizes) to back
the stem out counterclockwise as far as it will go.
Operating Ball-Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. To open valve, use a wrench to rotate stem counterclockwise
90°. To close, rotate stem clockwise 90°.
12
3
4
5
6
7
8
9
10
11 12
1/12 TURN
To Access Service Port:
A service port cap protects the service port core from contamination and
serves as the primary leak seal.
1. Remove service port cap with an appropriately sized wrench.
2. Connect gauge set to service port.
3. When testing is completed, replace service port cap and tighten as
follows:
With torque wrench: Finger tighten and
torque cap per table 1.
Without torque wrench: Finger tighten and
use an appropriately sized wrench to turn
an additional 1/6 turn clockwise.
12
3
4
5
6
7
8
9
10
11 12
1/6 TURN
WHEN SERVICE VALVE IS CLOSED,THE SERVICE PORT IS OPEN
TO THE LINE SET AND INDOOR UNIT.
When service valve is OPEN, the service port is
open to line set, indoor and outdoor unit.
Reinstall Stem Cap:
Stem cap protects the valve stem from damage and serves as the
primary seal. Replace the stem cap and tighten as follows:
With torque wrench: Finger tighten and
then torque cap per table 1.
Without torque wrench: Finger tighten
and use an appropriately sized
wrench to turn an additional 1/12 turn
clockwise.
NOTE - A label with specific torque requirements may be affixed to the stem cap. If the label is present, use the specified torque.
Figure 2. Angle and Ball-Type Service Valves

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507163-01 05/13
Recovering Refrigerant from Existing System
MAIN FUSE BOX/BREAKER PANEL
Disconnect all power to the existing outdoor unit at the disconnect
switch or main fuse box/breaker panel.
DISCONNECT POWER CONNECT MANIFOLD GAUGE SET
MANIFOLD GAUGES
RECOVERY MACHINE
CLEAN RECOVERY
CYLINDER
OUTDOOR UNIT
HIGH
LOW
Connect a gauge set, clean recovery cylinder and a recovery
machine to the service ports of the existing unit. Use the
instructions provided with the recovery machine to make the
connections.
METHOD 1:
Us this method if the existing outdoor unit is not equipped with shut-off valves, or if the unit is not operational and you plan to use the existing
HCFC-22 to flush the system.
Remove all HCFC-22 refrigerant from the existing system. Check gauges after shutdown to confirm that the system is completely void of refriger
ant.
METHOD 2:
Use this method if the existing outdoor unit is equipped with manual shut-off valves, and you plan to use new HCFC-22 refrigerant to flush the
system.
The following devices could prevent full system charge recovery into the outdoor unit:
Outdoor unit's high or low-pressure switches (if applicable), when tripped, can cycle the compressor OFF.
Compressor can stop pumping due to tripped internal pressure relief valve.
Compressor has internal vacuum protection that is designed to unload the scrolls (compressor stops pumping) when the pressure ratio meets
a certain value or when the suction pressure is as high as 20 psig. (Compressor suction pressures should never be allowed to go into a vacuum.
Prolonged operation at low suction pressures will result in overheating of the scrolls and permanent damage to the scroll tips, drive bearings and
internal seals.)
Once the compressor cannot pump down to a lower pressure due to one of the above system conditions, shut off the vapor valve. Turn OFF the
main power to unit and use a recovery machine to recover any refrigerant left in the indoor coil and line set.
Perform the following task:
A Start the existing HCFC-22 system in the cooling mode and close the liquid line valve.
B Use the compressor to pump as much of the existing HCFC-22 refrigerant into the outdoor unit until the outdoor system is full. Turn the outdoor unit
main power OFF and use a recovery machine to remove the remaining refrigerant from the system.
Note - It may be necessary to bypass the low pressure switches (if equipped) to ensure complete refrigerant evacuation.
C When the low side system pressures reach 0 psig, close the vapor line valve.
D Check gauges after shutdown to confirm that the valves are not allowing refrigerant to flow back into the low side of the system.
Remove existing HCFC-22 refrigerant using one of the following procedures:
RECOVER REFRIGERANT
IMPORTANT - Some system configurations may contain higher than normal refrigerant charge due to either large internal coil volumes,
and/or long line sets.
12
3
DISCONNECT
SWITCH
MAIN FUSE
BOX/BREAKER
PANEL
Figure 3. Recovering Refrigerant

Page 7
SSB*H4 SERIES
CONTROL PANEL
ACCESS
LOCATION
6 (152)
36 (914)
12 (305) 30 (762)
LINE SET
CONNECTIONS
24 (610)
48 (1219)
MINIMUM CLEARANCE BETWEEN
TWO UNITS
CLEARANCE ON ALL SIDES — INCHES (MILLIMETERS)
ACCESS PANEL
MINIMUM CLEARANCE
ABOVE UNIT
NOTES:
Clearance to one of the other three
sides must be 36 inches (914mm).
Clearance to one of the remaining
two sides may be 12 inches
(305mm) and the final side may be
6 inches (152mm).
Figure 4. Installation Clearances
New Unit Placement
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
See Unit Dimensions on page 3 for sizing mounting slab,
platforms or supports. Refer to figure 4 for mandatory
installation clearance requirements.
POSITIONING CONSIDERATIONS
Consider the following when positioning the unit:
Some localities are adopting sound ordinances based
on the unit's sound level registered from the adjacent
property, not from the installation property. Install the
unit as far as possible from the property line.
When possible, do not install the unit directly outside
a window. Glass has a very high level of sound
transmission. For proper placement of unit in relation
to a window see the provided illustration in figure 5,
detail A.
PLACING UNIT ON SLAB
When installing unit at grade level, the top of the slab
should be high enough above grade so that water from
higher ground will not collect around the unit. The slab
should have a slope tolerance as described in figure 5,
detail B.
NOTE - If necessary for stability, anchor unit to slab as
illustrated in figure 5, detail D.
IMPORTANT
To help stabilize an outdoor unit, some installations may
require strapping the unit to the pad using brackets and
anchors commonly available in the marketplace.
ELEVATING THE UNIT
Units are outfitted with elongated support feet as illustrated
in figure 5, detail C.
If additional elevation is necessary, raise the unit by
extending the height of the unit support feet. This may be
achieved by using a 2 inch (50.8mm) Schedule 40 female
threaded adapter.
The specified coupling will fit snuggly into the recessed
portion of the feet. Use additional 2 inch (50.8mm)
Schedule 40 male threaded adaptors which can be
threaded into the female threaded adaptors to make
additional adjustments to the level of the unit.
NOTE - Keep the height of extenders short enough to
ensure a sturdy installation. If it is necessary to extend
further, consider a different type of field-fabricated
framework that is sturdy enough for greater heights.

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507163-01 05/13
LEG DETAIL
BASE
2” (50.8MM) SCH 40
FEMALE THREADED
ADAPTER
Concrete slab — use two plastic
anchors (hole drill 1/4”)
Wood or plastic slab — no plastic an
chor (hole drill 1/8”)
COIL
BASE PAN
CORNER POST
STABILIZING BRACKET (18 GAUGE
METAL — 2” WIDTH; HEIGHT AS
REQUIRED)
— Slab Side Mounting
#10 1/2” LONG SELF-DRILLING
SHEET METAL SCREWS
#10 1-1/4” LONG HEX HD SCREW
AND FLAT WASHER
MINIMUM ONE
PER SIDE
Stabilizing bracket (18 gauge metal — 2” (50.8mm) width; height as required); bend to form
right angle as exampled below.
FOR EXTRA
STABILITY
— Deck Top Mounting
— Elevated Slab Mounting
using Feet Extenders
STABILIZING UNIT ON UNEVEN SURFACES
Install unit level or, if on a slope, maintain slope tolerance of two (2)
degrees (or two inches per five feet [50 mm per 1.5 m]) away from
building structure.
MOUNTING
SLAB
BUILDING
STRUCTURE
GROUND LEVEL
— Outside Unit Placement — Slab Mounting at Ground Level
SAME FASTENERS AS
SLAB SIDE MOUNTING.
IMPORTANT - To help stabilize an outdoor unit, some installations may require strapping the unit to the pad using brackets and anchors
commonly available in the marketplace.
DETAIL A DETAIL B
DETAIL C
DETAIL D
2” (50.8MM) SCH 40
MALE THREADED
ADAPTER
Use additional 2” SCH 40 male threaded adapters
which can be threaded into the female threaded
adapters to make additional adjustments to the level of
the unit.
TWO 90° ELBOWS INSTALLED IN LINE SET WILL
REDUCE LINE SET VIBRATION.
Install unit away from windows.
One bracket per side (minimum). For extra stability, two brackets per side, two inches
(51mm) from each corner.
DETAIL E
Figure 5. Placement, Slab Mounting and Stabilizing Unit

Page 9
SSB*H4 SERIES
ROOF MOUNTING
Install the unit a minimum of 6 inches (152 mm) above the
roof surface to avoid ice build-up 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.
NOTICE
Roof Damage!
This system contains both refrigerant and oil. Some
rubber roofing material may absorb oil and cause the
rubber to swell when it comes into contact with oil. The
rubber will then bubble and could cause leaks. Protect
the roof surface to avoid exposure to refrigerant and oil
during service and installation. Failure to follow this
notice could result in damage to roof surface.
Removing and Installing Panels
IMPORTANT
Do not allow panels to hang on unit by top tab. Tab is for
alignment and not designed to support weight of panel.
WARNING
To prevent personal injury, or damage to panels, unit or
structure, be sure to observe the following:
While installing or servicing this unit, carefully stow all
removed panels out of the way, so that the panels will not
cause injury to personnel, nor cause damage to objects
or structures nearby, nor will the panels be subjected to
damage (e.g., being bent or scratched).
While handling or stowing the panels, consider any
weather conditions, especially windy conditions, that
may cause panels to be blown around and battered.
LOUVERED PANEL REMOVAL
Remove the louvered panels as follows:
1. Remove two screws, allowing the panel to swing open slightly.
2. Hold the panel firmly throughout this procedure. Rotate bottom corner of
panel away from hinged corner post until lower three tabs clear the slots as
illustrated in detail B.
3. Move panel down until lip of upper tab clears the top slot in corner post as
illustrated in detail A.
LOUVERED PANEL INSTALLATION
Position the panel almost parallel with the unit as illustrated in detail D with the
screw side as close to the unit as possible. Then, in a continuous motion:
1. Slightly rotate and guide the lip of top tab inward as illustrated in detail A and
C; then upward into the top slot of the hinge corner post.
2. Rotate panel to vertical to fully engage all tabs.
3. Holding the panel's hinged side firmly in place, close the right-hand side of
the panel, aligning the screw holes.
4. When panel is correctly positioned and aligned, insert the screws and
tighten.
DETAIL A
DETAIL B
ROTATE IN THIS DIRECTION;
THEN DOWN TO REMOVE
PANEL
SCREW
HOLES
LIP
IMPORTANT! DO NOT ALLOW PANELS TO HANG ON UNIT BY TOP TAB. TAB IS FOR
ALIGNMENT AND NOT DESIGNED TO SUPPORT WEIGHT OF PANEL.
PANEL SHOWN SLIGHTLY ROTATED TO ALLOW TOP TAB TO EXIT (OR
ENTER) TOP SLOT FOR REMOVING (OR INSTALLING) PANEL.
MAINTAIN MINIMUM PANEL ANGLE (AS CLOSE TO PARALLEL
WITH THE UNIT AS POSSIBLE) WHILE INSTALLING PANEL.
PREFERRED ANGLE
FOR INSTALLATION
ANGLE MAY BE TOO
EXTREME
HOLD DOOR FIRMLY TO THE HINGED
SIDE TO MAINTAIN
FULLY-ENGAGED TABS
Detail C
Figure 6. Removing and Installing Panels

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507163-01 05/13
New or Replacement Line Set
REFRIGERANT LINE SET
This section provides information on installation or
replacement of existing line set. If new or replacement line
set is not being installed then proceed to Brazing
Connections on page 12.
IMPORTANT
Lennox highly recommends changing line set when
converting the existing system from HCFC-22 to
HFC-410A.If that is not possible and the line set is the
proper size as reference in table 2, use the procedure
outlined under Flushing the System on page 13.
If refrigerant lines are routed through a wall, then seal and
isolate the opening so vibration is not transmitted to the
building. Pay close attention to line set isolation during
installation of any HVAC system. When properly isolated
from building structures (walls, ceilings. floors), the
refrigerant lines will not create unnecessary vibration and
subsequent sounds. See figure 7 for recommended
installation practices. Also, consider the following when
placing and installing a high-efficiency outdoor unit.
Liquid lines that meter the refrigerant, such as RFC1 liquid
lines, must not be used in this application. Existing line set
of proper size as listed in table 2 may be reused. If system
was previously charged with HCFC-22 refrigerant, then
existing line set must be flushed (see Flushing Line Set
and Indoor Coil on page15).
Field refrigerant piping consists of liquid and vapor lines
from the outdoor unit to the indoor unit coil (braze
connections). Use Lennox L15 (sweat, non-flare) series
line set or field-fabricated refrigerant line sizes as listed in
table 2.
NOTE - When installing refrigerant lines longer than 50
feet, see the Lennox Refrigerant Piping Design and
Fabrication Guidelines, CORP. 9351-L9, or contact
Lennox Technical Support Product Applications for
assistance.
To obtain the correct information from Lennox, be sure to
communicate the following information:
Model SSB*H4 and size of unit (e.g. -036).
Line set diameters for the unit being installed as listed
in table 2 and total length of piping.
Number of elbows vertical rise or drop in the piping.
The compressor is charged with sufficient Polyol ester oil
for line set lengths up to 50 feet. Recommend adding oil to
system based on the amount of refrigerant charge in the
system. No need to add oil in system with 20 pounds of
refrigerant or less. For systems over 20 pounds - add one
ounce of oil for every five pounds of refrigerant.
Recommended topping-off POE oils are Mobil EAL
ARCTIC 22 CC or ICI EMKARATERL32CF.
WARNING
Polyol Ester (POE) oils used with HFC-410A
refrigerant absorb moisture very quickly. It is very
important that the refrigerant system be kept closed
as much as possible. DO NOT remove line set caps
or service valve stub caps until you are ready to make
connections.
IMPORTANT
Mineral oils are not compatible with HFC-410A.If oil
must be added, it must be a Polyol Ester oil.
Table 2. Refrigerant Line Set — Inches (mm)
Model Number Field Connections Recommended Line Set
Liquid Line Vapor Line Liquid Line Vapor Line L15 Line Sets
SSB036H4S4
3/8 in. (10 mm) 7/8 in. (22 mm) 3/8 in. (10 mm) 7/8 in (22 mm) L15-65 — 15 ft. - 50 ft. (4.6 m - 15 m)
SSB048H4S4
SSB060H4S4 3/8 in. (10 mm) 1-1/8 in. (29 mm) 3/8 in. (10 mm) 1-1/8 in. (29 mm) Field Fabricated
NOTE - Some applications may required a field provided 7/8” to 1-1/8” adapter