York LX series User manual

HeatingandAirConditioning
LX SERIES
GEOTHERMAL HEAT PUMPS
DUAL CAPACITY
MODELS:
YLF024 - 072
(2 THRU 6 NOMINAL TONS)
Due to continuous product improvement, specifications are
subject to change without notice.
Visit us on the web at www.york-geothermal.com
Additional rating information can found at
www.ahridirectory.org
FOR DISTRIBUTION USE ONLY - NOTTO BE USEDAT POINT OF RETAILSALE
INSTALLATION MANUAL
(2
THRU
6
NOMINAL
TONS)

Table of Contents
Model Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
General Installation Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
Closed Loop Ground Source Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Open Loop Ground Water Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hot Water Generator Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Electronic Thermostat Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Auxiliary Heat Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Auxiliary Heat Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Blower Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dimensional Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
The Aurora™ Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Reference Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Legend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Wiring Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Unit Startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Operating Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Compressor and Thermistor Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Refrigerant Circuit Guideline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Heat of Extraction/Rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Correction Factor Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Antifreeze Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Replacement Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Service Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Revision Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 49
LX SERIES INSTALLATION MANUAL

4
Model Nomenclature
LX SERIES INSTALLATION MANUAL
YLF
1-3 4 5-7 8 9 10
Model Type
YLF –LX Series Water-to-Air
Compressor Type
T–Dual-Capacity
Unit Capacity (MBTUH)
024, 036, 048, 060, 072
Discharge Air Configuration
T–Top (Vertical)
S–Side (Horizontal)
E–End (Horizontal)
Return Air Configuration
L–Left
R–Right
Voltage
1–208-230/60/1
Hot Water Generation & IntelliStart®Option
0–No Hot Water Generation, No IntelliStart
1–Hot Water Generation with Factory Installed Pump, No IntelliStart
3–No Hot Water Generation, IntelliStart
4–Hot Water Generation with Factor
y
Installed Pump, IntelliStart
Vintage
* - Factory Use Only
Control Option
A–AuroraTM Base Controls
Air Coil Option
0–Uncoated Coil
1–AlumiSeal
Filter Option
2–Duct Flanges, No Filter
0–1" Filter Rack with 1" MERV 8 Filter
1–1" Filter Rails with 1" MERV 8 Filter
Water Coil Option
C–Copper
N–CuproNickel
Blower Options
4–5 Speed ECM
Rev.: 12 June 2014D
11 12 13 15
T 048 T L 1 1 4 C A 0
14
A
16
*
17

5
WARNING: Before performing service or
maintenance operations on a system, turn off main
power switches to the indoor unit. If applicable, turn
off the accessory heater power switch. Electrical
shock could cause personal injury.
Installing and servicing heating and air conditioning equipment can
be hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install, repair
or service heating and air conditioning equipment. Untrained
personnel can perform the basic maintenance functions of cleaning
coils and cleaning and replacing filters. All other operations should
be performed by trained service personnel. When working on
heating and air conditioning equipment, observe precautions in
the literature, tags and labels attached to the unit and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves.
Use a quenching cloth for brazing operations and have a fire
extinguisher available.
Moving and Storage
Move units in the normal “up” orientation. Horizontal units may
be moved and stored per the information on the packaging. Do
not stack more than three units in total height. Vertical units may
be stored one upon another to a maximum height of two units.
Do not attempt to move units while stacked. When the equipment
is received, all items should be carefully checked against the bill
of lading to be sure all crates and cartons have been received.
Examine units for shipping damage, removing the units from the
packaging if necessary. Units in question should also be internally
inspected. If any damage is noted, the carrier should make
the proper notation on the delivery receipt, acknowledging the
damage.
Unit Location
Locate the unit in an indoor area that allows for easy removal of
the filter and access panels. Location should have enough space
for service personnel to perform maintenance or repair. Provide
sufficient room to make water, electrical and duct connection(s). If
the unit is located in a confined space, such as a closet, provisions
must be made for return air to freely enter the space by means of a
louvered door, etc.Any access panel screws that would be difficult
to remove after the unit is installed should be removed prior to
setting the unit. On horizontal units, allow adequate room below the
unit for a condensate drain trap and do not locate the unit above
supply piping. Care should be taken when units are located
in unconditioned spaces to prevent damage from frozen
water lines and excessive heat that could damage electrical
components.
Safety Considerations
General Installation Information
Figure 1: Vertical Unit Mounting
2 in. Extruded
Polystyrene
Installing Vertical Units
Prior to setting the unit in place, remove and discard the
compressor hold down shipping bolt located at the front of the
compressor mounting bracket.
Vertical units are available in left or right air return configurations.
Top air discharge vertical units should be mounted level on a
vibration absorbing pad slightly larger than the base to provide
isolation between the unit and the floor. It is not necessary to
anchor the unit to the floor (see below).
If access to the left side of the unit will be limited after installation,
remove the two mounting screws on the left side of the control
box before setting the unit (leave the two front mounting screws
intact). This will allow the control box to be removed with only the
two front mounting screws for future service.
LX SERIES INSTALLATION MANUAL

6
General Installation Information cont.
Insulate supply
plenum and use
at least one 90
elbow to
reduce noise
Electrical
Disconnect
Flexible Duct
Collar Threaded Rods
Line Voltage
Ball Valves
Hose
Kits
To Line
Power
To
Thermostat
Hanging
Brackets
(Included)
Building Water Loop
O
Figure 2: Horizontal Unit Mounting
Installing Horizontal Units
Remove and discard the compressor hold down shipping bolt
located at the front of the compressor mounting bracket prior to
setting the unit in place. Horizontal units are available with side or
end discharge and may be easily field converted by flipping the
blower discharge panel (The 024 model requires an additional
discharge panel). Horizontal units are normally suspended from a
ceiling by four or six 3/8 in. diameter threaded rods. The rods are
usually attached to the unit by hanger bracket kits furnished with
each unit.
Lay out the threaded rods per the dimensions in Figure 3.
Assemble the hangers to the unit as shown. Securely tighten the
brackets to the unit using the weld nuts located on the underside of
the bottom panel. When attaching the hanger rods to the bracket, a
double nut is required since vibration could loosen a single nut. To
allow filter access, one bracket on the filter side should be installed
180° from the position shown in Figure 3. The unit should be
pitched approximately 1/4-inch towards the drain in both directions
to facilitate the removal of condensate. Use only the bolts provided
in the kit to attach hanger brackets. The use of longer bolts could
damage internal parts.
Some residential applications require the installation of horizontal
units on an attic floor. In this case, the unit should be set in a full
size secondary drain pan on top of a vibration absorbing pad. The
secondary drain pan prevents possible condensate overflow or
water leakage damage to the ceiling. The secondary drain pan is
usually placed on a plywood base isolated from the ceiling joists by
additional layers of vibration absorbing material.
CAUTION: Do not use rods smaller than 3/8-inch
diameter since they may not be strong enough
to support the unit. The rods must be securely
anchored to the ceiling.
LX SERIES INSTALLATION MANUAL

7
General Installation Information cont.
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Figure 3: Hanger Location and Assembly
Weight Distribution
Model Vertical
Weight Horizontal Weight
Horizontal Weight Distribution
Front Back
1234
024 lb 198 228 69 63 73 23
kg 90 103 31 29 33 10
036 lb 221 250 80 65 70 35
kg 100 113 36 29 32 16
048 lb 303 325 93 97 101 34
kg 137 147 42 44 46 15
060 lb 329 358 110 100 103 45
kg 149 162 50 45 47 20
072 lb 350 369 141 78 71 79
kg 159 167 64 35 32 36
8/3/2014
Hanger Bracket Locations (See Figure 3)
Model Hanger Kit
Part Number Unit Hanger Dimensions
ABCD
024 in. 99S500A04 53.7 25.1 21.4 n/a
cm. 136.4 63.8 54.4 n/a
036 in. 99S500A04 63.7 25.1 21.4 n/a
cm. 161.8 63.8 54.4 n/a
048-060 in. 99S500A03 72.7 28.1 24.4 29.3
cm. 184.7 71.4 62.0 74.4
072 in. 99S500A03 77.7 28.1 24.4 29.3
cm. 197.4 71.4 62.0 74.4
LX SERIES INSTALLATION MANUAL

8
When connecting to an open loop (ground water) system, thread
any 1-inch MPT fitting (SCH80 PVC or copper) into the swivel
connector and tighten in the same manner as noted above. The
open and closed loop piping system should include pressure/
temperature taps for serviceability.
Never use flexible hoses smaller than 1-inch inside diameter
on the unit. Limit hose length to 10 feet per connection. Check
carefully for water leaks.
Duct System
An air outlet collar is provided on vertical top air discharge units
and all horizontal units to facilitate a duct connection. A flexible
connector is recommended for discharge and return air duct
connections on metal duct systems. Uninsulated duct should be
insulated with a minimum of 1-inch duct insulation. Application of
the unit to uninsulated ductwork in an unconditioned space is not
recommended as the unit’s performance will be adversely affected.
If the unit is connected to existing ductwork, check the duct
system to ensure that it has the capacity to accommodate the air
required for the unit application. If the duct is too small, as in the
replacement of heating only systems, larger ductwork should be
installed. All existing ductwork should be checked for leaks and
repaired if necessary.
The duct system should be sized to handle the design airflow
quietly and efficiently. To maximize sound attenuation of the unit
blower, the supply and return plenums should include an internal
duct liner of fiberglass or constructed of ductboard for the first few
feet. On systems employing a sheet metal duct system, canvas
connectors should be used between the unit and the ductwork. If
air noise or excessive airflow is a problem, the blower speed can
be changed.
Water Piping
The proper water flow must be provided to each unit whenever the
unit operates. To assure proper flow, use pressure/temperature
ports to determine the flow rate. These ports should be located at
the supply and return water connections on the unit. The proper
flow rate cannot be accurately set without measuring the water
pressure drop through the refrigerant-to-water heat exchanger.
All source water connections on residential units are swivel piping
fittings (see Figure 4) that accept a 1-inch male pipe thread (MPT).
The swivel connector has a rubber gasket seal similar to a rubber
hose gasket, which when mated to the flush end of any 1-inch
threaded pipe provides a leak-free seal without the need for thread
sealing tape or compound. Check to ensure that the rubber seal
is in the swivel connector prior to attempting any connection. The
rubber seals are shipped attached to the waterline. To make the
connection to a ground loop system, mate the brass connector
(supplied in CK4LI connector kit) against the rubber gasket in
the swivel connector and thread the female locking ring onto the
pipe threads, while maintaining the brass connector in the desired
direction. Tighten the connectors by hand, then gently snug the
fitting with pliers to provide a leak-proof joint.
Figure 4: Swivel Connections
Locking
Ring
Stainless
Steel
Snap Ring
Gasket
Support
Sleeve
Gasket
Material
General Installation Information cont.
CAUTION: When attaching ductwork or accessories
to the cabinet, make sure the fasteners do not
come into contact with the
air coil.
LX SERIES INSTALLATION MANUAL

9
General Installation Information cont.
Water Quality
It is the responsibility of the system designer and installing
contractor to ensure that acceptable water quality is present and
that all applicable codes have been met in these installations.
Failure to adhere to the guidelines in the water quality table could
result in loss of warranty. In ground water situations where scaling
could be heavy or where biological growth such as iron bacteria
will be present, a closed loop system is recommended. The heat
exchanger coils in ground water systems may, over a period of
time, lose heat exchange capabilities due to a buildup of mineral
deposits inside. These can be cleaned, but only by a qualified
service mechanic, as special solutions and pumping equipment
are required. Hot water generator coils can likewise become
scaled and possibly plugged. In areas with extremely hard water,
the owner should be informed that the heat exchanger may require
occasional flushing.
Units with cupronickel heat exchangers are recommended for
open loop applications due to the increased resistance to build-up
and corrosion, along with reduced wear caused by acid cleaning.
Failure to adhere to the guidelines in the water quality table could
result in the loss of warranty.
Water Treatment
Do not use untreated or improperly treated water. Equipment
damage may occur. The use of improperly treated or untreated
water in this equipment may result in scaling, erosion, corrosion,
algae or slime. Purchase of a pre-mix antifreeze could significantly
improve system reliability if the water quality is controlled and there
are additives in the mixture to inhibit corrosion. There are many
examples of such fluids on the market today such as Environol™
1000 (pre-mix ethanol), and others. The services of a qualified
water treatment specialist should be engaged to determine what
treatment, if any, is required. The product warranty specifically
excludes liability for corrosion, erosion or deterioration of
equipment.
The heat exchangers and water lines in the units are copper
or cupronickel tube. There may be other materials in the
buildings piping system that the designer may need to take into
consideration when deciding the parameters of the water quality. If
antifreeze or water treatment solution is to be used, the designer
should confirm it does not have a detrimental effect on the
materials in the system.
Contaminated Water
In applications where the water quality cannot be held to
prescribed limits, the use of a secondary or intermediate heat
exchanger is recommended to separate the unit from the
contaminated water. The table on the next page outlines the water
quality guidelines for unit heat exchangers. If these conditions
are exceeded, a secondary heat exchanger is required. Failure to
supply a secondary heat exchanger where needed will result in a
warranty exclusion for primary heat exchanger corrosion or failure.
LX SERIES INSTALLATION MANUAL

10
1/2'' Pitch
Drain
1.5 in. 1.5 in.
PVC tube stub
PVC coupling Vent (if needed)
PVC tube stub
1/8 in. per foot
NOTE: Check dimensional data for actual PVC sizes.
Figure 6: Unit Pitch for Drain
Water Quality Guidelines
Figure 5: Horizontal Drain Connection
Low Water Coil Limit
Set the freeze sensing switch SW2-1 on the Aurora Base Control
(ABC) printed circuit board for applications using a closed loop
antifreeze solution to “LOOP” (15°F). On applications using an
open loop/ground water system (or closed loop no antifreeze), set
this dip switch to “WELL” (30°F), the factory default setting. (Refer
to the DIP Switch Settings table in theAurora Control section.)
Condensate Drain
On vertical units, the internal condensate drain assembly consists
of a drain tube which is connected to the drain pan, a 3/4-inch PVC
female adapter and a flexible connecting hose. The female adapter
may exit either the front or the side of the cabinet. The adapter
should be glued to the field-installed PVC condensate piping.
On vertical units, a condensate hose is inside all cabinets as a
trapping loop; therefore, an external trap is not necessary.
On horizontal units, a PVC stub is provided for condensate drain
piping connection. An external trap is required (see below). If a
vent is necessary, an open stand pipe may be applied to a tee in
the field-installed condensate piping.
General Installation Information cont.
Material Copper 90/10 Cupro-Nickel 316 Stainless Steel
pH Acidity/Alkalinity 7- 9 7 - 9 7 - 9
Scaling Calcium and Magnesium
Carbonate (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm (Total Hardness) less than 350 ppm
Hydrogen Sulfide Less than .5 ppm (rotten egg smell
appears at 0.5 PPM) 10 - 50 ppm Less than 1 ppm
Sulfates Less than 125 ppm Less than 125 ppm Less than 200 ppm
Chlorine Less than .5 ppm Less than .5 ppm Less than .5 ppm
Chlorides Less than 20 ppm Less than 125 ppm Less than 300 ppm
Carbon Dioxide Less than 50 ppm 10 - 50 ppm 10- 50 ppm
Ammonia Less than 2 ppm Less than 2 ppm Less than 20 ppm
Corrosion Ammonia Chloride Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Nitrate Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Hydroxide Less than .5 ppm Less than .5 ppm Less than .5 ppm
Ammonia Sulfate Less than .5 ppm Less than .5 ppm Less than .5 ppm
Total Dissolved Solids (TDS) Less than 1000 ppm 1000-1500 ppm 1000-1500 ppm
LSI Index +0.5 to -.05 +0.5 to -.05 +0.5 to -.05
Iron
Fouling Iron, Fe²+ (Ferrous) Bacterial Iron Potential < .2ppm < .2 ppm < .2 ppm
(Biological
Growth) Iron Oxide Less than 1 ppm. Above this level
deposition will occur. Less than 1 ppm. Above this level deposition will occur. Less than 1 ppm. Above this level deposition will occur.
Erosion Suspended Solids Less than 10 ppm and filtered
for max of 600 micron size Less than 10 ppm and filtered for max of 600 micron size Less than 10 ppm and filtered for max of 600 micron size
Threshold Velocity
(Fresh Water) < 6 ft/sec < 6 ft/sec <6 ft/sec
NOTE: Grains = PPM divided by 17 • mg/l is equivalent to PPM 7/17/14
LX SERIES INSTALLATION MANUAL

11
Figure 7: Closed Loop Ground Source Application
Once piping is completed between the unit, pumps and
the ground loop, final purging and charging of the loop
is required. A flush cart (or a 1.5 HP pump minimum) is
needed to achieve adequate flow velocity in the loop to
purge air and dirt particles from the loop itself. A filter
MUST be used when flushing a loop. The standard 100
micron filter bag (LFC-F100M) is acceptable for capturing
relatively large debris such as pipe shavings, gravel, and
medium sand particles. In certain installation locations
other smaller materials such as fine sand, silt, and clay
can be less than 75 microns. For these smaller particles
the use of the 1 micron filter bag is required (LFC-F1M).
It is also recommended to run the flush cart with the
1 micron filter bag for at least 30 minutes. Antifreeze
solution is used in most areas to prevent freezing. Flush
the system adequately to remove as much air as possible
then pressurize the loop to a static pressure of 40-50 psi
(summer) or 50-75 psi (winter). This is normally adequate
for good system operation. Loop static pressure will
fluctuate with the seasons. Pressures will be higher in
the winter months than during the cooling season. This
fluctuation is normal and should be considered when
initially charging the system.
Flexible Duct
Collar
Vibration Absorbing Pad
P/T Plugs
Drain
Hot Water Generator
Connections
Auxiliary
Heater
Knockout
Low
Voltage to
Thermostat
Unit Supply
Auxiliary Heat
Supply
Insulated piping
or hose kit
Disconnects
(If Applicable)
Unit Power
P/T
TO
LOOP
GeoLink
®
Flow
Center
GeoLink®
Polyethylene w/
Armaflex®
Insulation
NOTE: Additional information can be found in Flow Center
installation manual and Flush Cart manual.
Closed Loop Ground Source Systems
Figure 8: Primary/Secondary Wiring with Aurora Base Control
(no AXB Board)
CC
T2 T1
Compressor
C
R
S
Blue
L1
L2
Black
Red
Tan(6)
Cap
Ext Pump
1/2 hp Total
208-230/60/1
Pump
G
1
2
PB1
1
2
Pump
Circuit
Breaker
Circuit
Breaker
1
5A
5A
Optional Internal
HWG Pump
HWG
Pump
Purple
Hot Water
Limit Switch
130°F
Blue
12
3
Cabinet
HW Switch
Field Supplied
Relay for Heat
Pump 1
Field Supplied
Relay for Heat
Pump 2
Heat Pump 1
Contactor Coil
Heat Pump 2
Contactor Coil
Field Supplied
Fuses 5A
Multiple Units on One Flow Center
When two heat pumps are connected to one loop pumping system,
follow figure 8. Installer will be required to supply fuses, two relays,
and wiring. It is recommended that water solenoid valves
be installed on heat pumps that share a flow center. This is
to allow water flow through only the heat pump that has
a demand. Circulating fluid through a heat exchanger of a
system that is not operating could be detrimental to the
long-term reliability of the compressor.
LX SERIES INSTALLATION MANUAL

12
Typical open loop piping is shown below. Always maintain
water pressure in the heat exchanger by placing water control
valves at the outlet of the unit to prevent mineral precipitation.
Use a closed, bladder-type expansion tank to minimize mineral
formation due to air exposure. Ensure proper water flow through
the unit by checking pressure drop across the heat exchanger
and comparing it to the figures in unit capacity data tables in the
specification catalog. 1.5-2 gpm of flow per ton of cooling capacity
is recommended in open loop applications.
Figure 9b: Open Loop Solenoid Valve Connection Option
Typical slow operating external 24V water solenoid valve
(type V) wiring.
Figure 9a: Open Loop Solenoid Valve Connection Option
Typical quick operating external 24V water solenoid valve
(type PPV100 or BPV100) wiring.
Flexible
Duct Collar
Vibration
Absorbing Pad
P/T Plugs
Drain
Hot Water Generator
Connections
Auxiliary
Heater
Knockout
Low Voltage
to Thermostat
and Valve
Unit Supply
Aux. Heat Supply
Water Out
Water In
Shut Off Valves
Boiler Drains
For HX Flushing
Disconnects
(IfApplicable)
Rubber Bladder
Expansion Tank
Solenoid
Valve
Shut Off Valves
(to isolate solenoid
valve while acid flushing)
Strainer
Flow Control
Valve
(on outlet of
Solenoid Valve)
Compressor
Line Voltage
Figure 10: Open System - Groundwater Application
NOTE: SW2-4 and SW2-5 should be “OFF” to cycle with the
compressor.
Open Loop Ground Water Systems
Discharge water from the unit is not contaminated in any manner
and can be disposed of in various ways, depending on local codes,
i.e. recharge well, storm sewer, drain field, adjacent stream or
pond, etc. Most local codes forbid the use of sanitary sewer for
disposal. Consult your local building and zoning departments to
assure compliance in your area.
NOTE: For open loop/groundwater systems or systems that do not
contain an antifreeze solution, set SW2-Switch #1 to the “WELL”
(30°F) position. (Refer to the DIP Switch Settings table in the
Aurora Control section.) Slow opening/closing solenoid valves
(type V) are recommended to eliminate water hammer.
Acc Com
Acc NC
Acc NO
1
2
3
C
RP1
P2
SV
Solenoid
Valve
ABC Board
NOTE: SW2-4 should be “ON” and SW2-5 should be “OFF” when
using a slow opening (V) water valve.
C
R
Acc Com
ACC NC
Acc NO
C
W/Y
V Valve ABC Board
Orange(29)
Blue(30)
Black/
White(31)
Figure 9c: Wiring diagram for dual water valve installations, one
type V slow operating solenoid and one BPV100/PPV100
quick operating solenoid.
C
W/Y
CCG or CC GND
CC
CC
U
SV CC2 or CCHI
Logic Board
Taco Valve
V100FPT
(Type V)
BPV/PPV
Solenoid
Compressor
Contactor
Coil
LX SERIES INSTALLATION MANUAL

13
To maximize the benefits of the hot water generator a minimum
50-gallon water heater is recommended For higher demand
applications, use an 80-gallon water heater or two 50-gallon water
heaters connected in a series as shown below. Two tanks plumbed
in a series is recommended to maximize the hot water generator
capability. Electric water heaters are recommended. Make sure
all local electrical and plumbing codes are met for installing a
hot water generator. Residential units with hot water generators
contain an internal circulator and fittings. A water softener is
recommended with hard water (greater than 10 grains or 170 total
hardness).
NOTES: 1) Using a preheat tank, as shown in Figure 12, will
maximize hot water generator capabilities. 2) The hot water
generator coil is constructed of vented double wall copper suitable
for potable water.
Figure 11: Typical Hot Water Generator Installation
CAUTION: Elements will burn out if energized dry.
Figure 12: Hot Water Generator Installation In Preheat Tank
In
Venting Waste Valve
or Vent Coupling
3/4" x 3/4"
x 1/2" tee Cold
Water In
Hot
Water Out
P/T Relief
Valve
P/T Relief
Valve
HWG
Water In
HWG
Water Out
Drain ValveDrain Valve
Storage
Tank
Electric Powered
Water Heater
Water Tank Preparation
To install a unit with a hot water generator, follow these installation
guidelines.
1. Turn off the power to the water heater.
2. Attach a water hose to the water tank drain
connection and run the other end of the hose to an
open drain or outdoors.
3. Close the cold water inlet valve to the water heater tank.
4. Drain the tank by opening the valve on the bottom of the tank,
then open the pressure relief valve or hot water faucet.
5. Flush the tank by opening the cold water inlet valve to the water
heater to free the tank of sediments. Close when draining water
is clear.
6. Disconnect the garden hose and remove the drain valve from
the water heater.
7. Refer to Plumbing Installation and Hot Water
Generator Startup.
NOTE: This configuration maximizes hot water
generator capability.
DrainValve
In
P/TRelief
Valve
Cold
Water In Hot
Water Out
HWG
Water In
HWG
Water Out
Venting Waste
Valve or Vent
Coupling
3/4” x 3/4” x 1/2” tee
Hot Water Generator Connections
LX SERIES INSTALLATION MANUAL

14
Hot Water Generator Startup
1. Turn the hot water generator switch to the “ON” position. The
hot water generator switch will allow the hot water generator
pump to be enabled or disabled by the service technician or
homeowner.
2. Close the drain valve to the water heater.
3. Open the cold water supply to the tank.
4. Open a hot water faucet in the building to bleed air from the
system. Close when full.
5. Open the pressure relief valve to bleed any remaining air from
the tank, then close.
6. If so equipped, turn the venting (burping) screw in the center
of the pump two (2) turns open (water will drip out), wait until
all air is purged from the pump, then tighten the plug. Use vent
couplings to bleed air from the lines.
7. Carefully inspect all plumbing for water leaks and correct as
required.
8. Before restoring electrical supply to the water heater, adjust the
temperature setting on the tank.
• On tanks with both upper and lower elements, the
lower element should be turned down to the lowest
setting, approximately 100°F. The upper element
should be adjusted to 120°F to 130°F. Depending upon
the specific needs of the customer, you may want to
adjust the upper element differently.
• On tanks with a single element, lower the thermostat
setting to 120°F.
9. After the thermostat(s) is adjusted, replace the access cover
and restore electrical supply to the water heater.
10.Make sure that any valves in the hot water generator water
circulating circuit are open.
11.Turn on the unit to first stage heating.
12.The hot water generator pump should be running. When the
pump is first started, turn the venting (burping) screw located
under the Burp Me label (if equipped) in the center of the
pump two (2) turns open until water dribbles out, then retighten
venting screw. Allow the pump to run for at least five minutes to
ensure that water has filled the circulator properly. Be sure the
switch for the hot water generator pump switch is “ON”.
13.The temperature difference between the water entering and
leaving the hot water generator should be 5°F to 15°F. The
water flow should be approximately 0.4 gpm per ton of nominal
cooling.
14.Allow the unit to heat water for 15 to 20 minutes to be sure
operation is normal.
Plumbing Installation
1. Inspect the dip tube in the water heater cold inlet for a check
valve. If a check valve is present it must be removed or
damage to the hot water generator circulator will occur.
2. Remove drain valve and fitting.
3. Thread the 3/4-inch NPT x 3-1/2-inch brass nipple into the
water heater drain port.
4. Attach the center port of the 3/4-inch FPT tee to the opposite
end of the brass nipple.
5. Attach the 1/2-inch copper to 3/4-inch NPT adaptor to the side
of the tee closest to the unit.
6. Install the drain valve on the tee opposite the adaptor.
7. Run interconnecting tubing from the tee to hot water generator
water out.
8. Cut the cold water “IN” line going to the water heater.
9. Insert the reducing solder tee in line with cold water “IN” line as
shown.
10.
Run interconnecting copper tubing between the unit hot water
generator water “IN” and the tee (1/2-inch nominal). The
recommended maximum distance is 50 feet.
11. To prevent air entrapment in the system, install a vent coupling
at the highest point of the interconnecting lines.
12.Insulate all exposed surfaces of both connecting water lines
with 3/8-inch wall closed cell insulation.
NOTE: All plumbing and piping connections must comply with local
plumbing codes.
CAUTION: Never operate the HWG circulating pump
while dry. If the unit is placed in operation before
the hot water generator piping is connected, be sure
that the pump switch is set to the OFF position.
Hot Water Generator Connections cont.
Hot Water Generator Switch
The hot water generator switch is taped in the disabled position
at the factory.
LX SERIES INSTALLATION MANUAL

15
General
Be sure the available power is the same voltage and phase as that
shown on the unit serial plate. Line and low voltage wiring must be
done in accordance with local codes or the National Electric Code,
whichever is applicable.
Unit Power Connection
Connect the incoming line voltage wires to L1 and L2 of the
contactor as shown in Figure 13B for single-phase unit. Consult
the Unit Electrical Data in this manual for correct fuse sizes.
Open lower front access panel. Insert power wires through
knockouts on lower left side of cabinet. Route wires through left
side of control box and connect to contactor and ground (Figure
13B).
Accessory Relay
A set of “dry” contacts has been provided to control accessory
devices, such as water solenoid valves on open loop installations,
electronic air cleaners, humidifiers, etc. This relay contact should
be used only with 24 volt signals and not line voltage power. The
relay has both normally open and normally closed contacts and
can operate with either the fan or the compressor. Use DIP switch
SW2-4 and 5 to cycle the relay with blower, compressor, or control
a slow opening water valve. The relay contacts are available on
terminals #1 and #3 of P2.
208 Volt Operation
All 208/230 units are factory wired for 230 volt operation. For
208 volt operation, the red and blue transformer wires must be
switched on terminal strip PB2.
Figure 13B:
Line Voltage 208-230/60/1 control box
Figure 13A:
Wire access
Electrical Connections
Pump Power Wiring
See Figure 14 for electrical connections from control box
to pumps.
FC1/FC2 style flow centers with fixed speed pumps connect to
PB1 in the control box.
Figure 14: Pump Wiring 208-230/60/1
L2
L1
L1
L2
PB1
1
2
2
1
PB1
External
Loop Pump(s)
208-230/60/1
1/2 hp Max
LX SERIES INSTALLATION MANUAL

16
R
Y1
C
W
O
G
L
24VAC (Hot)
24VAC (Common)
Compressor (1st Stage)
Aux. Heat
Reversing Valve
Blower Relay
System Monitor
Heat Pump Connection
Thermostat Connection
Y2 Compressor (2nd Stage)
Electronic Thermostat Installation
Figure 15a: Thermostat Wiring (Y1 Style Signals)
Figure 15b: Thermostat Wiring (Communicating Style Signals)
LX SERIES INSTALLATION MANUAL
C
P7
P1
–
R
W
C 24VAC (Common)
R 24VAC (Hot)
B- Communication
W1 (Optional)
Heat Pump Connection
Thermostat Connection
+A+ Communication
TPCM32U03AYRK/TPCM32U04AYRK
Monochrome Thermostats
C
P7
–
R
C 24VAC (Common)
R 24VAC (Hot)
DX- Communication
Heat Pump
Connection
Thermostat
Connection
+DX+ Communication
TPCC32U01YRK
Color Touchscreen
Thermostat
Position the thermostat subbase against the wall so that it is
level and the thermostat wires protrude through the middle of the
subbase. Mark the position of the subbase mounting holes and
drill holes with a 3/16-inch bit. Install supplied anchors and secure
base to the wall. Thermostat wire must be 8-conductor (4 or 5
counductor for communicating thermostats), 20-AWG (minimum)
wire. Strip the wires back 1/4-inch (longer strip lengths may
cause shorts) and insert the thermostat wires into the connector
as shown. Tighten the screws to ensure secure connections.
The thermostat has the same type connectors, requiring the
same wiring. See instructions enclosed in the thermostat for
detailed installation and operation information. The W1 terminal
on TPCM32U03AYRK and TPCM32U04AYRK communicating
thermostats may be hard wired to provide aux/emergency heat in
the event communication is lost between the thermostat and the
ABC microprocessor.
NOTE: Aurora Base Control (ABC) DIP switch SW2-7 is
required to be in the “OFF” position for the control to operate
with FaultFlash or ComforTalk thermostats. SW2-7 in the “ON”
position configures the control to operate with typical thermostats
(continuous lockout signal). There must be a wire connecting
Y2 on the Aurora controller to 2nd stage compressor on the
thermostat for proper operation. SW2-7 DIP switch position is not
relevant with communicating thermostats.

17
Auxiliary Heat Ratings
Auxiliary Heat Electrical Data
Electrical Data
Model
KW
Stages
BTU/HR
Min CFM
208V 230V 208V 230V 024 036 048 - 072
EAM(H)5* 3.6 4.8 1 12,300 16,300 450 ●●
EAM(H)8* 5.7 7.6 2 19,400 25,900 550 ●●
EAM(H)10* 7.2 9.6 2 24,600 32,700 650 ●
EAL(H)10* 7.2 9.6 2 24,600 32,700 1100 ●
EAL(H)15* 10.8 14.4 2 36,900 49,100 1250 ●
EAL(H)20* 14.4 19.2 2 49,200 65,500 1500 ●
Order the “H” part number when installed on horizontal units 6/9/2014
Air flow level for auxiliary heat (Aux) must be equal to or above the minimum CFM in this table
Model Supply
Circuit
Heater Amps Min Circuit Amp Fuse (USA) Fuse (CAN) CKT BRK
208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V 208 V 240 V
EAM(H)5* Single 17.3 20.0 26.7 30.0 30 30 30 30 30 30
EAM(H)8* Single 27.5 31.7 39.3 44.6 40 45 40 45 40 45
EAM(H)10* Single 34.7 40.0 48.3 55.0 50 60 50 60 50 60
EAL(H)10* Single 34.7 40.0 53.3 60.0 60 60 60 60 60 60
EAL(H)15*
Single 52.0 60.0 75.0 85.0 80 90 80 90 70 100
L1/L2 34.7 40.0 53.3 60.0 60 60 60 60 60 60
L3/L4 17.3 20.0 21.7 25.0 25 25 25 25 20 30
EAL(H)20*
Single 69.3 80.0 96.7 110.0 100 110 100 110 100 100
L1/L2 34.7 40.0 53.3 60.0 60 60 60 60 60 60
L3/L4 34.7 40.0 43.3 50.0 45 50 45 50 40 50
All heaters rated single phase 60 cycle and include unit fan load 3/10/14
All fuses type “D” time delay (or HACR circuit breaker in USA)
Supply wire size to be determined by local codes
Dual Capacity Unit with 5 Speed ECM Motor
Model Rated
Voltage
Voltage
Min/Max
Compressor HWG
Pump
FLA
Ext
Loop
FLA
Blower
Motor
FLA
Total
Unit
FLA
Min
Circ
Amp
Max
Fuse/
HACR
MCC RLA LRA LRA**
024 208-230/60/1 187/253 18.2 11.6 58.3 21.0 0.4 5.4 4.1 21.5 24.5 35
036 208-230/60/1 187/253 23.8 15.2 83.0 30.0 0.4 5.4 4.1 25.1 28.9 40
048 208-230/60/1 187/253 33.0 21.1 104.0 37.0 0.4 5.4 7.6 34.5 39.8 60
060 208-230/60/1 187/253 42.3 27.1 152.9 54.0 0.4 5.4 7.6 40.5 47.2 70
072 208-230/60/1 187/253 46.3 29.6 179.2 63.0 0.4 5.4 7.6 43.0 50.4 80
**With optional IntelliStart 6/9/14
Rated Voltage of 208/230/60/1
HACR circuit breaker in USA only
All fuses Class RK-5
LX SERIES INSTALLATION MANUAL

18
5-Speed ECM Constant Torque Motors
The 5-Speed ECM is a ‘Constant Torque’ ECM motor and delivers
air flow similar to a PSC but operates as efficiently as an ECM Motor.
Because it’s an ECM Motor, the 5-Speed ECM can ramp slowly up or
down like the ECM motor. There are 5 possible speed taps available
on the 5-Speed ECM motor with #1 being the lowest airflow and #5
being the highest airflow. These speed selections are preset at the
time of manufacture and are easily changed in the field if necessary.
If more than one tap are energized at the same time, built in logic
gives precedence to the highest tap number and allows air flow to
change with G, Y1, Y2 and W signals or with Fan, CC, CC2, and
E1 output signals. Each of those 5 speeds has a specific ‘Torque’
value programmed into the motor for each speed selection.
As static pressure increases, airflow decreases resulting in less
torque on the rotor. The motor responds only to changes in torque
and adjusts its speed accordingly.
The 5-Speed ECM motor is powered by line voltage but the motor
speed is energized by 24 VAC.
5-Speed ECM Benefits:
- High efficiency
- Soft start
- 5 speeds with up to 4 speeds on-line
- Built in logic allows air flow to change with G, Y1, Y2 and W
signals
- Super efficient low airflow continuous blower setting (G)
Blower Performance Data
S i Bl S d S d ECM
Dual Capacity with 5-Speed ECM
Model Motor
Speed Motor Tap T’stat Cnct. Blower Size Motor HP Airflow (cfm) at External Static Pressure (in. wg)
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.6 0.7 0.8 0.9 1.00
024
High 5 W
9 x 7 1/2
1024 1013 1002 988 974 963 951 940 929 901 872 785 691 - - -
Med High 4 Y2 932 917 902 892 882 867 851 842 832 817 802 756 661 - - -
Med 3 835 826 816 801 785 772 759 749 738 719 700 677 636 - - -
Med Low 2 Y1 765 747 729 720 710 696 681 662 643 627 611 581 515 - - -
Low 1 G 665 656 647 626 605 593 580 561 541 519 496 443 392 - - -
036
High 5 W
9 x 7 1/2
1325 1319 1313 1293 1272 1242 1212 1158 1103 1058 1013 930 839 - - -
Med High 4 Y2 1279 1267 1254 1238 1222 1203 1184 1137 1089 1049 1008 926 836 - - -
Med 3 1229 1218 1206 1187 1167 1154 1140 1110 1079 1044 1008 929 829 - - -
Med Low 2 Y1 1201 1184 1167 1156 1145 1129 1113 1086 1058 1028 997 914 808 - - -
Low 1 G 1007 989 971 958 945 925 904 889 873 862 850 818 778 - - -
048
High 5 W
11 x 10 1
1890 1874 1857 1845 1833 1809 1784 1769 1754 1736 1718 1672 1629 1601 1562 1522
Med High 4 Y2 1769 1754 1739 1721 1703 1685 1666 1645 1623 1604 1585 1539 1499 1463 1432 1376
Med 3 1671 1652 1632 1614 1595 1576 1557 1536 1514 1494 1474 1430 1387 1351 1313 1173
Med Low 2 Y1 1574 1555 1535 1514 1492 1472 1452 1431 1410 1387 1363 1330 1284 1236 1108 1014
Low 1 G 1388 1370 1352 1322 1292 1264 1236 1216 1195 1178 1161 1095 984 916 842 787
060
High 5 W
11 x 10 1
2077 2066 2055 2044 2033 2017 2000 1966 1931 1904 1877 1841 1810 1791 1740 1653
Med High 4 Y2 1948 1937 1925 1910 1895 1880 1865 1831 1797 1778 1759 1720 1707 1680 1660 1612
Med 3 1810 1794 1778 1739 1700 1684 1667 1657 1646 1629 1612 1576 1583 1547 1510 1480
Med Low 2 Y1 1680 1667 1653 1618 1583 1562 1540 1522 1503 1488 1473 1465 1449 1410 1369 1319
Low 1 G 1594 1572 1550 1512 1474 1450 1426 1410 1393 1385 1376 1351 1325 1290 1168 1085
072
High 5 W
11 x 10 1
2402 2388 2373 2358 2343 2334 2325 2307 2289 2274 2258 2215 2177 2125 2052 1933
Med High 4 Y2 2209 2193 2177 2164 2151 2135 2118 2105 2092 2072 2052 2017 1982 1954 1925 1844
Med 3 2085 2072 2058 2045 2031 2010 1989 1972 1954 1936 1918 1881 1852 1821 1790 1751
Med Low 2 Y1 1961 1951 1940 1926 1911 1885 1859 1844 1829 1814 1798 1759 1727 1703 1670 1636
Low 1 G 1767 1751 1735 1715 1694 1678 1661 1640 1619 1602 1584 1548 1512 1475 1426 1397
Factory speed settings are in Bold 7/30/14
Air flow values are with dry coil and standard filter
For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm] / FaceArea [sq ft]).
Then for velocities of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by 0.08 in. wg, 400 fpm by 0.12in. wg., and 500 fpm by 0.16 in. wg.
Highest setting is for auxiliary heat (W) and lowest setting is for constant blower (G). The “Y1” and “Y2” settings must be between the “G” and “W” settings.
L
GN
C
12345 AUX - Gray
G - Blue
Y1 - Red Y2 - Tan
C - Black
L - Orange
G - Green N - Brown
High Voltage
Connections
3/16 in.
Low Voltage
Connections 1/4 in.
5-Speed ECM Motor Connections - Dual Capacity
CAUTION: Disconnect all power before performing
this operation.
Setting Blower Speed - 5-Speed ECM
5-Speed ECM blower motors have five (5) speeds of which four (
4
are selectable on dual capacity.
LX SERIES INSTALLATION MANUAL

19
TOP TOP
3 SERIES VERTICAL SUBMITTAL DATA
FRONT
LEFT RETURN
RIGHT RETURN
A
B
B
C
C
D
E
H
F
G
S
T
S
T
R R
Q Q
N
LO M
O
L
N
P
I
J
K
1.90 4.8
1.90 4.8
2 ft [61 cm]
Primary Service Access
2 ft [61 cm] Alternate
Service Access. Right Return
Opposite Side
Vertical
Top Flow
Model
Overall Cabinet Water Connections
Electrical
Connections Discharge Connection Return Connection
I
3/4”
cond
J
1/2”
cond
K
1/2”
cond
Duct Flange Installed Return Duct Flanges
ABCDEFGH
Loop
Water
FPT
HWG
Sweat
(I.D.)
LM N O PQ R S T
Width Depth Height Loop
In Loop Out HWG In HWG Out Cond- ensate Power Supply Ext Pump Low Votage Supply Width Supply Depth Return Depth Return Height
024 in. 22.5 26.5 39.4 2.3 5.3 13.4 16.4 9.6 1”
Swivel 1/2” female 8.9 11.4 13.7 6.3 0.7 14.0 14.0 2.7 2.3 22.0 18.0 1.8
cm. 57.2 67.3 100.1 5.8 13.5 34.0 41.7 24.4 22.6 29.0 34.8 16.0 1.8 35.6 35.6 6.9 5.8 55.9 45.7 4.6
036 in. 22.5 26.5 44.5 2.0 7.0 13.5 16.5 10.2 1”
Swivel 1/2” female 9.5 12.1 14.3 6.1 0.8 14.0 14.0 4.4 2.4 22.0 22.0 2.0
cm. 57.2 67.3 113.0 5.1 17.8 34.3 41.9 25.9 24.1 30.7 36.3 15.5 2.0 35.6 35.6 11.2 6.1 55.9 55.9 5.1
048-
060
in. 25.6 31.6 50.4 2.3 7.3 15.9 18.9 10.6 1”
Swivel 1/2” female 9.8 12.3 14.6 6.9 1.1 18.0 18.0 3.8 1.7 28.0 26.0 1.7
cm. 65.0 80.3 128.0 5.8 18.5 40.4 48.0 26.9 24.9 31.2 37.1 17.5 2.8 45.7 45.7 9.7 4.3 71.1 66.0 4.3
072 in. 25.6 31.6 54.4 2.3 7.3 15.9 18.9 10.6 1”
Swivel 1/2” female 9.8 12.3 14.6 6.9 1.1 18.0 18.0 3.8 1.7 28.1 30.0 2.2
cm. 65.0 80.3 138.2 5.8 18.5 40.4 48.0 26.9 24.9 31.2 37.1 17.5 2.8 45.7 45.7 9.7 4.3 71.4 76.2 5.6
Condensate is 3/4” PVC female glue socket and is switchable from side to front 7/17/14
Unit shipped with 1” [25.4mm] return duct flanges and are suitable for duct connection.
Discharge flange is field installed and extends 1” [25.4mm] from cabinet
Water connections extend 1.2” [30.5mm] beyond front of cabinet.
The optional 1” filter rack (not shown) has the same return opening connection size as the duct flanges shown in the drawing. The filter rack extends 2.25”(57.1 mm)
from the unit.
The optional 1” filter rack is suitable for duct connection.
The optional filter rails (not shown) extend 1.25” (31.75 mm) from cabinet.
Vertical Dimensional Data
LX SERIES INSTALLATION MANUAL

20
D
E
FG
I
J
K
2 ft [61 cm]
Primary Service Access
2 ft [61 cm]
Alternate Service Access
Right return opposite side
FRONT VIEW
AB
N O L
M
H
C
SIDE DISCHARGE VIEW END VIEW
LOS
R
PQ
2.00 5.1
TOP VIEW
Mount (2) hanger brackets
as shown to allow access
to filter
1.90 (4.8 cm) 1.90 (4.8 cm)
Horizontal
Model
Overall Cabinet Water Connections
Electrical
Connections Discharge Connection
Duct Flange Installed Return Connection
Return Duct Flanges
I
3/4”
cond
J
1/2”
cond
K
1/2”
cond
AB CDEFGH
Loop
Water
FPT
HWG
Sweat
(I.D.)
L* M N O* P Q R S
Width Depth Height In Out HWG
In HWG Out Cond- ensate Power Supply Ext Pump Low Votage Supply Height Supply Depth Return Depth Return Height
024 in. 22.5 53.0 19.3 2.3 5.3 13.8 16.8 0.8 1”
Swivel 1/2” female 8.9 11.5 13.7 1.7 10.5 9.5 8.2 2.2 21.8 16.5 1.5
cm. 57.2 134.6 49.0 5.8 13.5 35.1 42.7 2.0 22.6 29.2 34.8 4.3 26.7 24.1 20.8 5.6 55.4 41.9 3.8
036 in. 22.5 63.0 19.3 2.3 7.3 13.5 16.5 0.8 1”
Swivel 1/2” female 9.5 12.1 14.3 2.3 10.5 9.5 5.7 2.8 30.5 16.7 1.3
cm. 57.2 160.0 49.0 5.8 18.5 34.3 41.9 2.0 24.1 30.7 36.3 5.8 26.7 24.1 14.5 7.1 77.5 42.4 3.3
048-
060
in. 25.6 72.0 21.3 2.3 7.3 15.9 18.9 0.8 1”
Swivel 1/2” female 9.5 12.1 14.3 1.9 13.6 13.2 5.0 2.9 35.5 18.6 1.3
cm. 65.0 182.9 54.1 5.8 18.5 40.4 48.0 2.0 24.1 30.7 36.3 4.8 34.5 33.5 12.7 7.4 90.2 47.2 3.3
072 in. 25.6 77.0 21.3 2.3 7.3 15.9 18.9 0.8 1”
Swivel 1/2” female 9.5 12.1 14.3 1.9 13.6 13.2 5.0 2.8 40.4 18.7 1.5
cm. 65.0 195.6 54.1 5.8 18.5 40.4 48.0 2.0 24.1 30.7 36.3 4.8 34.5 33.5 12.7 7.1 102.6 47.5 3.8
* Dimensions shown are for left return side discharge other configurations shown in tables below 7/17/14
Condensate is 3/4” PVC female glue socket and is switchable from side to front
Unit shipped with 1” [25.4mm] return duct flanges suitable for duct connection.
Discharge flange is field installed and extends 1” [25.4mm] from cabinet
Water connections extend 1.2” [30.5mm] beyond front of cabinet.
The optional 1” filter rack (not shown) has the same return opening connection size as the duct flanges shown in the drawing. The filter rack
extends 2.25”(57.1 mm) from the unit.
The optional 1” filter rack is suitable for duct connection.
The optional filter rails (not shown) extend 1.25” (31.75 mm) from cabinet.
The 024 model is not field convertible changing from end to side discharge. It requires an additional discharge panel (not supplied).
024 Model L O 036 Model L O
Right Return End
Discharge in 2.2 5.7 Right Return End
Discharge in 6.5 6.6
cm 5.6 14.5 cm 16.5 16.8
Right Return Side
Discharge in 6.9 8.3 Right Return Side
Discharge in 2.3 5.7
cm 17.5 21.1 cm 5.8 14.5
Left Return End
Discharge in 6.5 7.3 Left Return End Discharge in 6.5 6.6
cm 16.5 18.5 cm 16.5 16.8
048-060 Models L O 072 Model L O
Right Return End
Discharge in 1.9 5.0 Right Return End Discharge in 1.9 5.0
cm 4.8 12.7 cm 4.8 12.7
Right Return Side
Discharge in 5.7 5.0 Right Return Side
Discharge in 5.7 5.0
cm 14.5 12.7 cm 14.5 12.7
Left Return End
Discharge in 5.7 4.9 Left Return End Discharge in 5.7 5.0
cm 14.5 12.4 cm 14.5 12.7
Horizontal Dimensional Data
LX SERIES INSTALLATION MANUAL