Sears GT Series User manual

Installation Instructions
NOTE: Read the entire instruction manual before starting the installation,
TABLE OF CONTENTS
PAGE NO.
SAFETY CONSIDERATIONS ...................................................................... 2
APPLICATION CONSIDERATIONS ................................................................. 3
Geothermal Systems .......................................................................... 3
Well Water Systems ........................................................................... 4
INSTALLATION RECOMMENDATIONS ............................................................ 6
CONFIGURATIONS ............................................................................... 6
Horizontal Configuration ...................................................................... 6
Counter-Flow Configuration ................................................................... 12
Vertical Configuration ......................................................................... 12
MOUNTING VERTICAL UNITS .................................................................... 20
MOUNTING HORIZONTAL UNITS ................................................................. 20
CONDENSATE DRAIN ............................................................................. 20
DUCT SYSTEM ................................................................................... 20
PIPING .......................................................................................... 21
ELECTRICAL .................................................................................... 21
Safety Devices and UPM Controller .............................................................. 22
ECM Interface Board ......................................................................... 25
FACTORY INSTALLED FEATURES ................................................................. 27
Constant Airflow Motor ....................................................................... 27
Smart Start Assist ............................................................................ 27
Pump Relay ................................................................................ 27
Comfort Alert Diagnostics Module (CADM) ....................................................... 27
Heat Recovery Package (HRP) .................................................................. 28
FIELD INSTALLED ACCESSORIES ................................................................. 29
SEQUENCE OF OPERATION ....................................................................... 30
Cooling Mode ............................................................................... 30
Heating Mode ............................................................................... 30
ELECTRONIC THERMOSTAT INSTALLATION ...................................................... 30
SYSTEM CHECKOUT ............................................................................. 31
UNIT START-UP .................................................................................. 31
MAINTENANCE .................................................................................. 31
TROUBLESHOOTING ............................................................................. 32
OPERATING TEMPERATURES AND PRESSURES TABLES ............................................ 36
AIRFLOW TABLES ............................................................................... 40
WATER SIDE PRESSURE DROP TABLE ............................................................. 42
SMART START LED INDICATORS .................................................................. 43

Information in these installation instructions pertains only to GT
series units.
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, personal injury, or property
damage. Consult a qualified installer, service agency, or your
distributor or branch for information or assistance. The qualified
installer or agency must use factory-authorized kits or accessories
when modifying this product. Refer to the individual instructions
packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes and
current editions of the National Electrical Code ( NEC ) NFPA 70.
In Canada, refer to current editions of the Canadian electrical code
CSA 22.1.
Recognize safety information. This is the safety-alert symbol/}k
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these signal words; DANGER, WARNING, and CAUTION. These
words are used with the safety-alert symbol. DANGER identifies
the most serious hazards which will result in severe personal injury
or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe
practices which would result in minor personal injury or product
and property damage. NOTE is used to highlight suggestions
which will result in enhanced installation, reliability, or operation.
CUT HAZARD
EXPLOSION HAZARD
Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.
Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.
2
3
Failure to follow this caution may result in personal iniury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing and gloves when
handling parts.
Fig. l-Standard Package
1. GT Series Water-To Air Heat Pump
2. Installation and Owner's Manual
3. Hanging Bracket Kit (HZ unit only)
A14032
[]NIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could result in personal injury
or equipment damage.
Puron® refrigerant systems operate at higher pressures than
standard R-22 systems. Do not use R-22 service equipment
or components on Puron® refrigerant equipment.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.

APPLICATION CONSIDERATIONS
Geothermal Systems
Closed loop and pond @plications require specialized design
knowledge. No attempt at these installations should be made unless
the dealer has received specialized training. Anti-freeze solutions
are utilized when low evaporating conditions are expected to occur.
Refer to the Flow Center installation manuals for more specific
instructions. (See Fig. 2)
i0
F Diagram shows typical q
Iinstallation and is for I
I illustration purposes I
I only. Ensure access to I
I Heat Pump is not I
restricted.
I I
L. /
(1) Line Voltage Disconnect (unit)
(2) Flex Duct Connection
(3) Low Voltage Control Connection
(4) Line Voltage Connection
(5) P/T Ports
(6) Vibration Pad
(7) Condensate Drain Connection
(8) Ground Loop Connection Kit
(9) Ground Loop Pumping Package
(10) Polyethylene with Insulation
(11) Line Voltage Disconnect (electric heater)
Fig. 2 -Example Geothermal System Setup
A14132

Well Water Systems
IMPORTANT: Table I must be consulted for water quality
requirements when using open loop systems. Awater sample must
be obtained and tested, with the results compared to the table.
Scaling potential should be assessed using the pH/Calcium
hardness method. If the pH is <7.5 and the calcium hardness is
1<100 ppm, the potential for scaling is low. For numbers out of the
range listed, amonitoring plan must be implemented due to
probable scaling.
Other potential issues such as iron fouling, corrosion, erosion and
clogging must be considered. Careful attention to water conditions
must be exercised when considering a well water application.
Failure to perform water testing and/or applying a geothermal heat
pump to awater supply that does not fall within the accepted
quality parameters will be considered a ntis-application of the unit
and resulting heat exchanger failures will not be covered under
warranty. Where ageothermal system will be used with adverse
water conditions, a suitable plate-frame heat exchanger MUST be
used to isolate the well water from the geothermal unit.
Proper testing is required to assure the well water quality is suitable
for use with water source equipment.
In conditions anticipating moderate scale formation or in brackish
water, a cupronickel heat exchanger is recommended. Copper is
adequate for ground water that is not high in nfineral content.
In well water applications, water pressure nmst always be
maintained in the heat exchanger. This can be accomplished with
either a control valve or a bladder type expansion tank.
When using a single water well to supply both domestic water and
the heat pump, care nmst be taken to insure that the well can
provide sufficient flow for both.
In well water applications, a slow closing solenoid valve must be
used to prevent water hammer (hammering or stuttering sound in
the pipeline). Solenoid valves should be connected across Y1 and
C1 on the interface board for all. Make sure that the VA draw of the
valve does not exceed the contact rating of the thermostat. (See
Fig. 3)
[]NIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Discharge air configuration change is not possible on Heat
Pumps equipped with Electric Heat Option.
/
//
r- 7
[ Typicalinstallation shown for [
illustration purposes only.
I_ ........ J
(1) Flex Duct Connection
(2) Low- Voltage Control Connection
(3) Vibration Pad
(4) Ball X?alves
(5) Solenoid 'Calve Slow Closing
(6) Condensate Drain Connection
(7) Drain 'Calves
(8) Hose Kits (optional)
(9) Pressure Tank (optional)
(10) P/T Ports (optional)
(11) Line Voltage Connection
(12) Electric Heater Line Voltage Disconnect
(13) Unit Line Voltage Disconnect
Fig. 3 - Example Well Water System Setup
A14130

Table 1 - Water Quality Requirements for Open-Loop Geothermal Heat Pump System
Parameter HX Material Closed Recirculating Open Loop and Recirculating Well
pH/Calcium Hardness All pH <7.5 and Ca Hardness <100ppm
Method
6.0 - 7.5
Ryznar Stability Index All -- If > 7.5 minimize steel pipe use
-0.5 to +0.5
If <-0.5 minimize steel pipe use.
Langelier Saturation Index All -- Based upon 150°F HWG and Direct well,
84°F Indirect Well HX
<0.2 ppm (Ferrous)
Iron Fe2 (Ferrous) All -- If Fe2. (ferrous) >0.2 ppm with pH 6-8, 02<5 ppm check
(Bacterial Iron Potential) for iron bacteria
<0.5 ppm of Oxygen
Iron Fouling All -- Above this level deposition will occur
6 - 8.5 6 - 8.5
pH All Monitor/treat as needed Minimize steel pipe below 7 and no open tanks with pH <8
At H S>0.2 ppm, avoid use of copper and copper nickel
piping or HXs. Rotten egg smell appears at 0.5 ppm level.
Hydrogen Sulfide (H2S) All -- Copper alloy (bronze or brass) cast components are OK
to <0.5 ppm
Ammonia ion as hydroxide,
chloride, nitrate and sulfate All -- <0.5 ppm
compounds
Maximum Allowable at Maximum Water Temperature
50°F 75°F 100°F
Copper -- <20 ppm NR NR
Maximum Chloride Levels cupronickel -- <150 ppm NR NR
304 SS -- <400 ppm <250 ppm <150 ppm
316 SS -- <1000 ppm <550 ppm <375 ppm
Titanium -- >1000 ppm >550 ppm >375 ppm
_i _ ........
<10 ppm of particles and a <10 ppm (<1 ppm "sandfree" for reinjection) of particles
Particulate Size and All maximum velocity of 1.8 m/s. and a maximum velocity of 1.8 m/s. Filtered for maximum
Erosion Filtered for maximum 841 mi- 841 micron [0.84 mm. 20 mesh] size. Any particulate that
cron [0.84 mm 20 mesh] size is not removed can potentially clog components
NOTES:
Closed recirculating system is identified by a closed pressurized piping system.
Recirculating open wells should observe the open recirculating design considerations.
NR - application not recommended
"--" No design Maximum

INSTALLATION RECOMMENDATIONS
The Water-to-Air Heat Pumps are designed to operate with
entering fluid temperature between 20°F to 90°F in the heating
mode and between 30°F to 120°F in the cooling mode.
NOTE: 50 ° minimum Entering Water Temperature (EWT) is
recommended for well water applications with sufficient water
flow to prevent freezing. Antifreeze solution is required for all
closed loop applications or EWT less than 45 ° . Cooling
Tower/Boiler and Geothermal applications should have sufficient
antifreeze solution to protect against extreme conditions and
equipment failure. Frozen water coils are not covered under
warranty. Other equivalent methods of temperature control are
acceptable.
Check Equipment and Job Site
Movin_ and Storage
If the equipment is not needed for immediate installation upon its
arrival at the job site, it should be left in its shipping carton and
stored in a clean, dry area. []nits must only be stored or moved in
the normal upright position as indicated by the "UP" arrows on
each carton at all times.
CONFIGURATIONS
Horizontal Configuration
The Horizontal Configuration water source heat pump is designed
to have a field configurable blower orientation: end blow (default)
and straight through. (See Fig. 4 and Fig. 5)
A14034
Fig. 4 -End Blow Configuration (default)
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
If unit stacking is required for storage, stack units as follows:
Do not stack units larger than 6tons!
Vertical units: less than 6 tons, no more than two high.
Horizontals units: less than 6 tons, no more than three high.
Inspect Equipment
Be certain to inspect all cartons or crates on each unit as received at
the job site before signing the freight bill. Verify that all items have
been received and that there are no visible damages; note any
shortages or damages on all copies of the freight bill. In the event
of damage or shortage, remember that the purchaser is responsible
for filing the necessary claims with the carrier. Concealed damages
not discovered until after removing the units from the packaging
must be reported to the carrier within 24 hours of receipt.
Location /Clearance
Locate the unit in an indoor area that allows easy removal of the
filter and access panels, and has enough room for service personnel
to perform maintenance or repair. Provide sufficient room to make
fluid, 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 face of unit's air coil. On horizontal units,
allow adequate room below the unit for a condensate drain trap and
do not locate the unit above supply piping.
[]NIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
These units are not approved for outdoor installation;
therefore, they must be installed inside the structure being
conditioned. Do not locate in areas that are subject to
freezing.
A14035
Fig. 5-Straight Through Configuration
NOTE: Left-hand and Right-hand horizontal (HZ) units have
different Blower Configuration instructions. Be sure ro refer to the
correct instructions in this document for the proper installation for
each configuration.
NOTE: Internally mounted electric heat is available in end blow
configurations only.
NOTE: Blower configuration changes should be done prior to
unit being installed in the final location.
[]NIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Discharge air configuration change is not possible on Heat
Pumps equipped with Electric Heat Option.
REQUIRED TOOLS:
• 5/16" hex head screwdriver
• 3/8" hex head screwdriver
• 7/16" hex head screwdriver
• Flat screwdriver
• Phillips head screwdriver
• 1/4" hex head screwdriver
• Needle nose pliers
• 5/16" - 1/4" ratchet wrench

Left-Hand Unit (GT024-72H*L) Instructions:
1. Remove and retain end and side panels. See Fig. 6.
2. Disconnect blower motor wiring and ground wire fastened
to blower housing. See Fig. 7.
3. Remove and retain bracket by removing (3) screws. See
Fig. 8.
4. Loosen blower assembly by removing (4) screws. See Fig.
9.
5. Remove and retain bracket by removing (2) screws. See
Fig. 10.
6. Rotate the blower into its new position. See Fig. 11.
Fig. 6 - Side Panel Removal
A14036
A14037
Fig. 7 - Blower Motor Wring &Ground Wire Location
Fig. 9-Screws Holding Blower Assembly
Fig. 10 - Screws Holding Blower Bracket
A14039
A14040
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Fig. 11 - Rotate Blower Into New Position
A14041
Fig. 8 - Screws Holding Bracket A14038

7. Remove and retain remaining bracket by removing (2)
screws. See Fig. 12.
8. Remove the blower assembly by sliding it forward. See
Fig. 13,
NOTE: Unit top is notched to allow blower to slide through.
9. Remove and discard blower collar by removing (8) screws.
See Fig. 14.
10. Reorient the blower assembly 180 degrees with blower
"belly" down and slide back into the cabinet. See Fig. 15.
11. Reinstall bracket in the new vertical position using (2)
screws. See Fig. 16,
12. Reinstall bracket removed in step 3 using (3) screws in the
same location. See Fig. 17.
..../[
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Fig. 12 - Retaining Bracket Removal
Fig. 13 -Blower Assembly Removal
A14042
A14043
Fig. 15 -Reinsert Blower Assembly
....
A14045
A14046
Fig. 16 - Reinstall Bracket
A14047
Fig. 17 - Reinstall Bracket Removed in Step 3
Fig. 14 -Blower Collar Removal
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A14044

13. Reinstall remaining bracket using (2) screws. See Fig. 18.
14. Connect vertical and horizontal brackets by installing (4)
screws. See Fig. 19.
Fig. 20 -Side and End Panel Removal A14036
A14048
Fig. 18 - Reinstalling Bracket
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A14049
Fig. 19 -Connect Vertical and Horizontal Brackets
Right-Hand Unit (GT024-72H*R) Instructions:
1. Remove and retain end and side panels. See Fig. 20.
2. Disconnect blower motor wiring and ground wire fastened
to blower housing, See Fig. 21.
3. Remove and retain (4) screws under the blower collar, See
Fig. 22.
[]NIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation,
Air coil is in close proxinfity to the blower. Air coil fins are
easily damaged. Great care must be taken during this step
to avoid coil damage. Shipping cardboard can be used as
protection during blower removal and installation,
A14037
Fig. 21 - Blower Motor Wring &Ground Wire Location
A14054
Fig. 22 - Location of Screws Under the Blower Collar

4. Slide blower assembly away from mounting bracket. See
Fig. 23.
5. Remove and retain (1) vertical bracket by removing (2)
screws. See Fig. 24.
6. Remove and discard horizontal blower bracket by removing
(3) screws. See Fig. 25.
7. Rotate blower into its new position. See Fig. 26.
8. Remove and retain remaining vertical blower bracket by re-
moving (2) screws. See Fig. 27.
9. Remove the blower assembly by sliding it forward. See
Fig. 28.
NOTE: Unit top is notched to allow blower to slide through.
J
Fig. 23 -Slide Blower Assembly Away
from Mounting Bracket
A14055
Fig. 24 - Remove Vertical Bracket A14056
......
.......
Fig. 26 - Rotate Blower into New Position A14058
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Fig. 27 - Remove Vertical Blower Bracket
A14059
Fig. 28 -Remove Blower Assembly A14060
A14057
Fig. 25 -Remove Horizontal Blower Bracket
10

10,Removeanddiscardblowercollarbyremoving(8)screws.
SeeFig.29.
11,Reorienttheblowerassembly180degreeswithblower
"belly"up.SeeFig.30.
12.Movetheblowerbackintothecabinet.SeeFig.31.
13,Reinstall(2)verticalblowerbracketsinthenewhorizontal
positionusing(4)screws.SeeFig.32,
14,Securethehorizontalblowerbracketstotheunitbaseusing
(4)screws.SeeFig.33,
15.Reconnectblowermotorwiringandgroundwire.
,ii@i!i_i]i!i/iiiiiiii//iiiiE_
Fig. 29 -Remove Blower Collar
A14061
Fig. 30 -Reorient Blower Assembly
A14062
Fig. 31 -Move Blower Back Into Cabinet
A14063
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A14064
Fig. 32 -Reinstall Vertical Blower Brackets
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A14065
Fig. 33 - Secure Horizontal Brackets to Unit Base
11

Counter-Flow Configuration
The Counter-Flow Configuration water source heat pump is a
dedicated down flow configuration. Available from the factory in
Left-hand and right-hand return air configurations.
Vertical Configuration
The Vertical (VT) Configuration water source heat pump is
designed to be field configured for various configurations. This is
achieved by relocating Electrical box (E-box), unit panels and
reorienting blower to discharge [JR BACK, OR SIDE. See Fig. 34
Through Fig. 37 for more detail.
NOTE: The unit, as shipped from the factory, is configured in
left-handed return configuration.
UNIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Discharge air configuration change is not possible on Heat
Pumps equipped with Electric Heat Option.
NOTE: Blower E-box and panel configuration changes should be
done prior to unit being installed in the final location,
Fig. 34 - Top Discharge (Default)
A14066
Fig. 35 - Back Discharge
A14067
Fig. 36 - Side Discharge
A14068
A14069
Fig. 37 - Unit Identifiers
1. Logo/Front Panel
2. Electrical Box
3. Default Configuration (can be ordered as either right- or
left-handed return).
NOTE: Internally mounted electric heat is only available in Top
Discharge configuration, See table below for details,
Blower Orientation and Electric Heat Compatibility
Top Yes, internally or duct-mounted
Blower Back Duct-mounted
Side Duct-mounted
12

Table 2 - Possible Unit Configurations
/\
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®
®
Left return,
top discharge
X _r
Left return,
rear
discharge
X
X
X
Right return,
left
discharge
X
X
X
X
X*
X
NOTE: All heat pumps are supplied with panel belt which needs
to be removed to access screws for panel removal. The panels have
additional internal fasteners to prevent any air leakage.
PERSONAL INJURY HAZARD
Failure to follow this caution may result in personal injury.
At least two people are required to perform this operation.
REQUIRED TOOLS:
•5/16" hex head screwdriver
• 3/8" hex head screwdriver
• 7/16" hex head screwdriver
• Flat screwdriver
• Phillips head screwdriver
• 1/4" hex head screwdriver
• Needle nose pliers
Access to Internal Components
1. Using a Phillips-head screw driver, remove the two (2)
screws.
A14070
Fig. 38 - Remove Panel Belt
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13
Fig. 39 - Remove Panel Belt
A14071

2. Remove and retain Condensing Section access panels
(bottom panel) by removing (3) screws. See Fig. 40.
3. Remove and retain Air Handler Panel by lifting up and out
as shown in Fig. 41. Remove panel about 12" away from
the cabinet and unplug LCD screen wiring. See Fig. 42.
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A14072
Fig. 40 -Remove Condensing Section Access Panels
1)uP
A14074
Fig. 41 -Remove Air Handler Panel
Blower Re-Configuration
NOTE: This instruction details re-configuration of blower from
UP to SIDE discharge. Reconfiguration to other side uses similar
steps.
1. Remove and retain diagonal support brackets on front and
back sides of the unit. See Fig. 43.
2. Unplug electrical connections of Blower motor and ground
wire connected to blower housing. See Fig. 44.
3. Remove and retain blower motor and inlet ring assembly by
removing (3) bolts securing blower motor bracket and
screws securing the blower inlet ring. See Fig. 45.
NOTE: Removing the blower motor and blower wheel greatly
simplifies handling of the blower assembly and reduces the chance
of damaging heat pump components.
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A14076
Fig. 44 -Unplug Electrical Connections and Ground Wire
Fig. 42 -Unplug LCD Screen Wiring
4. Repeat steps 1 - 3 for all three sides.
A14073
14
A14077
Fig. 45 -Remove Blower Motor and Inlet Ring Assembly

4.Removescrewsonbothsidesofthe blower securing verti-
cal blower bracket to horizontal support. See Fig. 46.
5. Remove and retain blower assembly by lifting up. See Fig.
47.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Air coil is in close proximity to the blower. Air coil fins are
easily damaged. Great care must be taken during this step
to avoid coil damage. Shipping cardboard can be used as
protection during blower removal and installation.
6. Remove and discard blower collar. See Fig. 48.
NOTE: Discharge air configuration change is not possible on Heat
Pumps equipped with Electric Heat Option.
7. Remove and retain (2) horizontal blower support brackets
by removing (4) screws in each. See Fig. 49.
NOTE: Upper bracket contains two push-in rubber bump stops.
i
A14078
Fig. 46 -Remove Screws Securing Vertical Blower Bracket
A14080
Fig. 48 -Remove Blower Collar
A14083
Fig. 49 -Remove Horizontal Blower Support Brackets
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Fig. 47 -Remove Blower Assembly
A14079
15

8. Reinstall brackets removed in Step (9) on the same side of
the unit as the blower outlet. See Fig. 50.
NOTE: Ensure bracket with push-in rubber bump stops is
installed in the top position.
9. Remove and retain vertical brackets from blower by
removing (4) screws, (2) on each side of the blower. See
Fig. 51.
10. Reinstall vertical brackets in new orientation. See Fig. 52.
11. Reinstall the blower assembly in the new desired location,
using the existing holes. See Fig. 53.
[]NIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Be aware of blower housing proxinfity to air side coil and
potential for coil damage.
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Fig. 50 - Reinstall Brackets
A14084
A14085
Fig. 51 -Remove Vertical Brackets from Blower
A14086
Fig. 52 - Reinstall Vertical Brackets in New Orientation
iiii
Fig. 53 -Reinstall Blower Assembly in New Location
A14087
16

12. Reinstall blower motor and inlet ring assembly by reversing
Step 6. See Fig. 54.
13. Reconnect blower motor electrical plug and ground wire.
14. Reinstall diagonal bracket(s). See Fig. 55.
Condensate Drain Connection Re-Configuration
When re-configuring the unit from Left-Hand Return to
Right-Hand Return, it is necessary to relocate condensate drain
connection from FRONT left corner post to BACK left corner
post. See Fig. 56.
A14088
Fig. 54 - Reinstall Blower and Inlet Ring Assembly
i_ ! i i{¸
A14089
Fig. 55 - Reinstall Diagonal Bracket(s)
A14090
Fig. 56 -Relocate Condensate Drain Connection
(front left corner to back left corner)
1. Cut the condensate drain hose on the inside of the cabinet.
NOTE: Be sure to retain the spring.
2. Remove and retain condensate drain plastic fitting and
grommet from the hose by pulling it away from the hose
(barb style connection). See Fig. 57.
3. Locate the BACK left condensate drain and remove and
retain plastic plug covering the cutout, See Fig. 58.
Fig. 57 - Relocate Condensate Drain Connection
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A14091
__ 1_
A14092
Fig. 58 -Relocate Condensate Drain Connection
17

4.Reinstallthe removed plastic plugs in the original Conden-
sate Drain Location.
5. Route the flexible plastic tube from FRONT left corner post
to BACK left. See Fig. 59.
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Avoid kinking the hose and/or creating a dip which could
act as a second internal p-trap. Double trapped drain lines
will not drain properly.
6. Measure and cut the condensate drain hose to the
appropriate length.
7. Insert spring onto condensate drain hose.
8. Reinstall condensate drain plastic fitting and bushing in its
new location. See Fig. 60.
HRP Switch Relocation
The HRP Pump Disconnect Switch is mounted on front right
corner post. See Fig. 61.
)
Fig. 61 - HRP Pump Disconnect Switch Location
PERSONAL INJURY AND/OR UNIT DAMAGE
HAZARD
A14094
A14093
Fig. 59 -Route Plastic Tube from Front Left to Back Left
Fig. 60 -Relocate Condensate Drain Connection
A14091
Failure to follow this caution may result in personal iniury
and/or wire damage.
Do not route wiring over potentially hot surfaces or
exposed sharp edges.
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Fig. 62 -Rectangular Knockout Location A14095
18

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PXX - MALE CONNECTORS
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MOUNTING VERTICAL UNITS
Vertical units should be mounted level on a vibration absorbing
pad slightly larger than the base to minimize vibration transmission
to the building structure. It is not necessary to anchor the unit to the
floor. See Fig. 64.
NOTE: On VT and CF units, the condensate drain pan is
internally sloped. There is no internal P-Trap.
VIBRATION PAD
FULL SIZE
Fig. 64 -Vibration Absorbing Pad A14117
MOUNTING HORIZONTAL UNITS
While horizontal units may be installed on any level surface strong
enough to hold their weight, they are typically suspended above a
ceiling by threaded rods. The manufacturer recommends these be
attached to the unit corners by hanger bracket kits. The rods nmst
be securely anchored to the ceiling. Refer to the hanging bracket
assembly and installation instructions for details.
IMPORTANT: Horizontal units installed above the ceiling
must conform to all local codes. An auxiliary drain pan, if
required by code, should be at least four inches larger than the
bottom of the heat pump.
Plumbing connected to the heat pump must not come in direct
contact with joists, trusses, walls, etc. Some applications require an
attic floor installation of the horizontal unit. In this case, the unit
should be set in a full size secondary drain pan on top of a
vibration absorbing mesh.
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 mesh.
In both cases, a 3/4"drain connected to this secondary pan should
be run to an cave at a location that will be noticeable. If the unit is
located in a crawl space, the bottom of the unit must be at least 4"
above grade to prevent flooding of the electrical parts due to heavy
rains.
NOTE: HZ unit condensate drain pan is NOT internally sloped.
IMPORTANT: Horizontal (HZ) units must be installed pitched
toward the Condensate Drain Connection 1/8" per foot.
CONDENSATE DRAIN
CONDENSATE DRAIN
CONNECTION
VENT (OPTIONAL)
I TRAP DOWN
2" MIN.
SLOPE DOWN
MIN.1/8" PER FOOT
A14118
Fig. 65 - Condensate Drain
A drain line nmst be connected to the heat pump and pitched away
from the unit a minimum of 1/8" per foot to allow the condensate
to flow away from the unit,
IMPORTANT: This connection must be in conformance with
local plumbing codes. A trap must be installed in the
condensate line to insure free condensate flow.
NOTE: HZ heat pump drain pan is not internally sloped.
A vertical air vent is sometimes required to avoid air pockets. The
length of the trap depends on the amount of positive or negative
pressure on the drain pan. A second trap must not be included,
DUCT SYSTEM
A supply air outlet collar and return air duct flange are provided on
all units to facilitate duct connections.
NOTE: Supply air duct and return air duct flanges are shipped
unfolded with unit.
Fold the duct flange outwards along the perforated line. Refer to
unit Dimensional Drawings for physical dimensions of the collar
and flange.
A flexible connector is recommended for supply and return air duct
connections on metal duct systems. All metal ducting should be
insulated with a minimum of one inch duct insulation to avoid heat
loss or gain and prevent condensate from forming during the
cooling operation.
Application of the unit to uninsulated duct work is not
recommended as the unit's performance will be adversely affected.
[)NIT OPERATION HAZARD
Failure to follow this caution may result in improper
equipment operation.
Do not connect discharge ducts directly to the blower
outlet,
The factory provided air filter must be removed when using a filter
back return air grill. The factory filter should be left in place on a
free return system.
If the unit will be installed in a new installation which includes new
duct work, the installation should be designed using current
ASHRAE procedures for duct sizing.
If the unit is to be connected to existing duct work, a check should
be made to assure that the duct system has the capacity to handle
the air required for the unit application.
If the duct system is too small, larger duct work should be installed.
Check for existing leaks and repair.
The duct system and all diffusers should be sized to handle the
designed air flow quietly. To maximize sound attenuation of the
unit blower, the supply and return air plenums should be insulated.
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