Modine Manufacturing 3H038824 Manual

WARNING
This unit contains R-410A high pressure refrigerant.
Hazards exist that could result in personal injury
or death. Installation, maintenance, and service
must only be performed by an HVAC technician
qualified in R-410A refrigerant and using proper
tools and equipment. Due to much higher pressure
of R-410A refrigerant, DO NOT USE service
equipment or tools designed for refrigerants other
than R-410A.
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death, and could cause
exposure to substances which have been
determined by various state agencies to cause
cancer, birth defects or other reproductive harm.
Read the installation, operating and maintenance
instructions thoroughly before installing or
servicing this equipment.
IMPORTANT
1. The use of this manual is specifically intended
for a qualified installation and service agency.
A qualified installation and service agency must
perform all installation and service of these
appliances.
2. Cased and Uncased Coils contain the
refrigerant R-410A Material Safety Data Sheet
(MSDS) for hazards and first aid measures.
3. This unit contains copper and / or brass
components and is not suitable for use with
ammonia (R717).
4. Refrigerant charging should only be carried out
by an EPA-certified air conditioning contractor.
GEO16-506.0
5H0833050000
INSTALLATION AND SERVICE MANUAL
cased and uncased coils for ground source heat pump split unit
model 3H038824
January, 2016
Inspection On Arrival
1. Inspect unit upon arrival. In case of damage, report it
immediately to transportation company and your local factory
sales representative.
2. Check rating plate on unit to verify that the coil and split
unit being installed have matching capacities and can be
installed together.
3. Inspect unit received for conformance with description of
product ordered (including specifications where applicable).
4. These coils are not for use with potable water.
THIS MANUAL IS THE PROPERTY OF THE OWNER.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.
NOTE:
Energy Star only
applies to certain
configurations.
NOTE: Modine Cased and Uncased Coils are Energy Star
Rated only when matched with the appropriate Modine GS Split
Units. Model EA Air Handlers are not Energy Star Rated.
WARNING

2GEO16-506
SPECIAL PRECAUTIONS
SPECIAL PRECAUTIONS
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS
IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE
SAFE, EFFICIENT, AND TROUBLE-FREE OPERATION. IN
ADDITION, PARTICULAR CARE MUST BE EXERCISED
REGARDING THE SPECIAL PRECAUTIONS LISTED BELOW.
FAILURE TO PROPERLY ADDRESS THESE CRITICAL
AREAS COULD RESULT IN PROPERTY DAMAGE OR LOSS,
PERSONAL INJURY, OR DEATH. THESE INSTRUCTIONS
ARE SUBJECT TO ANY MORE RESTRICTIVE LOCAL OR
NATIONAL CODES.
HAZARD INTENSITY LEVELS
1. DANGER: Indicates an imminently hazardous situation
which, if not avoided, WILL result in death or serious injury.
2. WARNING: Indicates a potentially hazardous situation which,
if not avoided, COULD result in death or serious injury.
3. CAUTION: Indicates a potentially hazardous situation which,
if not avoided, MAY result in minor or moderate injury.
4. IMPORTANT: Indicates a situation which, if not avoided, MAY
result in a potential safety concern.
DANGER
Appliances must not be installed where they may be exposed to
potentially explosive or flammable atmosphere.
CAUTION
1. Do not use these units to heat or cool the building
during construction. Mechanical components can quickly
become clogged with debris. System damage may result.
2. Do not overcharge the refrigeration system. This can lead
to elevated compressor discharge pressure and possibly
flooding the compressor with liquid.
3. Do not attempt to reuse any mechanical or electrical
component which has been wet. Such component must
be replaced.
4. For horizontal applications, the horizontal drain pan
must be installed. Failure to do so will result in property
damage.
5. Coils must be installed on the supply airflow side of
furnace.
IMPORTANT
1. Start-up and adjustment procedures must be performed
by a qualified service agency.
2. All refrigeration checks must be made by a qualified
R-410A refrigeration technician.
3. Do not release refrigerant to the atmosphere. When
adding or removing refrigerant, all national, state/province,
and local laws must be followed.
WARNING
1. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
2. All appliances must be wired strictly in accordance with
the wiring diagram furnished with the appliance. Any
wiring different from the wiring diagram could result in a
hazard to persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
4. This unit contains R-410A high pressure refrigerant.
Hazards exist that could result in personal injury or
death. Installation, maintenance, and service must only
be performed by an HVAC technician qualified in R-410A
refrigerant and using proper tools and equipment. Due
to much higher pressure of R-410A refrigerant, DO NOT
USE service equipment or tools designed for refrigerants
other than R-410A.
5. When servicing or repairing this equipment, use only
factory-approved service replacement parts. A complete
replacement parts list may be obtained by contacting
Modine Manufacturing Company. Refer to the rating plate
on the appliance for complete appliance model number,
serial number, and company address. Any substitution of
parts or controls not approved by the factory will be at the
owner’s risk.
Table of Contents
General Information ................................. 1
Inspection on Arrival ................................. 1
Special Precautions ................................. 2
Model/Serial Number Designations ..................... 3
Unit Dimensions .................................... 3
Unit Location....................................... 5
Installation ........................................ 5
SI (Metric) Conversion Factors ...................... 5
Ducting ......................................... 6
Wiring.......................................... 8
Start-Up Procedure.................................. 9
Physical Data ..................................... 10
Maintenance.................................... 10
Replacement Parts................................11
Serial Plate – Example.............................11
Troubleshooting ....................................11
Warranty ...................................Back Page

3
GEO16-506
MODEL NOMENCLATURE
Table 3.1 - Model Number Designations
Figure 3.1 - Uncased Coil Dimensions
Table 3.2 - Dimensions (inches)
Models 0024 0036 0048 0060
Overall Coil
A 27.61 27.61 30.37 33.66
B 20.13 20.13 20.13 20.13
C 24.50 24.50 24.50 24.50
Suction Line Connection (in.) - Sweat 5/8 3/4 3/4 7/8
Liquid Line Connection (in.) - Sweat 3/8 3/8 3/8 1/2
Condensate Drain Connection (in. NPT), SS 3/4 3/4 3/4 3/4
Approx. Operating Weight (lbs.) 44 46 50 56
Approx. Shipping Weight (lbs.) 94 96 100 106
Matching Split Model Size
Coil Type 024 036 048 060
Uncased 0024 0036 0048 0060
Cased 1024 1036 1048 1060

4GEO16-506
Figure 4.1 - Cased Coil Dimensions
UNIT DIMENSIONS
Table 4.1 - Dimensions (inches)
Models 1024 1036 1048 1060
Overall Cabinet
A 27.77 27.77 31.63 35.78
B 20.88 20.88 20.88 20.88
C 24.62 24.62 24.62 24.62
Condensate Drain I 19.60 19.60 23.60 27.60
Suction Line Connection (in.) - Sweat 5/8 3/4 3/4 7/8
Liquid Line Connection (in.) - Sweat 3/8 3/8 3/8 1/2
Condensate Drain Connection (in. NPT), SS 3/4 3/4 3/4 3/4
Approx. Operating Weight (lbs.) 83 85 94 105
Approx. Shipping Weight (lbs.) 133 135 144 155

5
GEO16-506
UNIT LOCATION / INSTALLATION
To Convert Multiply By To Obtain
"W.C. 0.24 kPa
psig 6.893 kPa
°F (°F-32) x 0.555 °C
inches 25.4 mm
feet 0.305 meters
CFM 0.028 m3/min
To Convert Multiply By To Obtain
CFH 1.699 m3/min
Btu/ft30.0374 mJ/m3
pound 0.453 kg
Btu/hr 0.000293 kW/hr
gallons 3.785 liters
psig 27.7 "W.C.
Table 5.1 - SI (Metric) Conversion Factors
Handling
Each unit will be shipped to the site on a wood skid. Whenever
possible, all lifting and handling of the unit should be done with
the packing and skid in position.
When slinging or using a forklift to lift the unit, the support points
should be sufficiently apart to give stability when lifting. Unless
otherwise noted, the lifting points should be equidistant from the
centerline. Extreme care should be taken not to drop the unit
Considerable damage can occur to the unit during positioning,
in particular, to the paneling and exterior paint. Use an adequate
number of personnel and the correct tools when moving the unit.
The unit is designed to remain upright so care should be taken
when lifting the unit up steps.
The use of torque screwdrivers on panel, cover or component
mounting screws is not recommended. Hand-start all screws.
If electric drills are used – set at the lowest possible torque.
Storage
Equipment should be stored in clean, dry area and in its original
packaging.
Do not store or install units in corrosive environments or
in locations subject to temperature or humidity extremes.
Performance, reliability, and service life can be significantly
reduced. Transport and store units in an upright position.
Unit Protection
To prevent damage, keep the unit in its original packaging or
cover with an equivalent protective covering while on the job
site. Cover open connections to prevent debris from entering the
system. Take extra precautions to protect the unit from damage
or contamination when in an area where spraying, plastering
and / or painting has not been completed. Physical damage or
contamination from foreign debris may prevent proper start-up
and costly equipment clean-up. Examine all fittings, valves, or
pipes and remove all dirt or debris before installing unit.
Preparation
1. If the installation has multiple units, check that unit
identifications correspond with the network diagrams. Advise
Modine immediately if discrepancies are noted.
2. Remove any Accessory Kits and shipping support material
from the mechanical compartment.
3. Check refrigerant piping for dents or kinks.
4. Ensure that aluminum distributor tubes and thermal
expansion valve capillary tubing has not come into contact
with any sheet metal brackets, or coil flanges. Do not re-bend
distributor leads. Aluminum should not be re-bent.
Electrical
Electrical wiring should be done in accordance with all
applicable national and local codes. It is the responsibility of the
electrical contractor to adhere to such codes. The warranty will
be voided if wiring is not in accordance with the specifications of
the unit. Modine recommends using copper conductors only.
All power supply wiring must be capable of carrying the
maximum current load under no fault conditions at the stipulated
voltages. Care should be taken to avoid significant voltage drops.
A knockout for power connection is provided on the access side
of the unit. See unit dimensions in Figures 3.1 and 4.1.
INSTALLATION
A conventional fossil fuel forced air furnace may also be used for
an air handler, as well as a alternative heat source, provided a
dual-fuel capable thermostat is used. The furnace must provide
airflow within +/- 5% of the airflows shown in Table 10.1. The
furnace must be disabled until auxiliary heating is called for, then
the heat pump must be disabled when the furnace takes over
the heat load. Refer to the furnace manufacturer’s installation
instructions for directions on installation of the furnace, coil, and
wiring. A Dual Fuel Thermostat is required to prevent damage to
the Split Unit.
Installation of these units is to be INDOORS only. The instructions
detailed below are for the Installation of a “Standard” unit.
Accommodations and adjustments will be required for the usage of
additional unit accessories. Should assistance be required for the
installation of these additional items, consult Modine at the phone
number listed on the back cover of this manual.
Modine Cased Coils are designed for upflow, downflow, and
horizontal (left and right) applications. Modifications are not
required for Cased Coils applied in the upflow and downflow
applications; however, the addition of a horizontal drain pan is
required for horizontal applications. The horizontal conversion
kit part numbers can be found in Table 6.1. Refer to GEO 16-
522 for conversion instructions.
The coils are shipped with a dry nitrogen holding charge and
come standard with ODF braze refrigerant connections to
ensure easy installation. The factory installed thermal expansion
valves are pre-set for optimal performance with a matched
Modine Split Condensing Unit.
DANGER
Appliances must not be installed where they may be exposed to
potentially explosive or flammable atmosphere.
UNIT LOCATION
Figure 5.1 - Cased Coil
CAUTION
1. For horizontal applications, the horizontal drain pan must
be installed. Failure to do so will result in property damage.
2. Coils must be installed on the supply airflow side of
furnace.

6GEO16-506
Location and Installation Considerations
1. It is highly recommended that the unit is located in a
conditioned space that is not subject to freezing and where
humidity levels are controlled so as not to could cause
cabinet condensation.
2. Provide adequate clearance for front access panels. A
minimum of 30” of clearance on the front side of the coil
should be provided.
3. The unit can be serviced entirely from the front. Be sure to
route primary and second condensate drain lines so as not
to interfere with access and maintenance.
4. The air delivery of the furnace must deliver the airflow and
static as specified in Table 10.1.
5. Coils must be installed on the supply airflow side of the furnace.
6. Horizontal applications require the addition of a horizontal
drain pan conversion kit. Refer to Table 6.1 for part numbers
and GEO-16-522 for conversion instructions.
7. Use screws with a maximum length of 3/8" to connect
ducting or duct collars to the unit.
8. Use of flexible duct collars and use of acoustical duct liners
are good installation practices that ensure quiet operation.
9. Provide adequate room to make refrigerant, electrical and
duct connections.
10. It may be necessary to fabricate a special plate to adapt the
coil casing to the furnace air discharge opening.
11. A tapered transition, with a 6" minimum length, is required to
evenly distribute airflow where the furnace cross flow area is
significantly different from that of the coil casing.
12. Provide a clear physical path to the unit. Adequate space
should be provided to allow removal of the unit, if necessary.
13. Allow adequate room below a horizontal unit for a
condensate drain trap.
14. Should the coil section be installed in a non-conditioned
space such as an attic, garage or crawl space, a full
size secondary drain pan must be provided to prevent
damage from condensate run-off. In this application, it is
recommended that the unit exterior be completely insulated
with a minimum of 1" thick fiberglass insulation with a vapor
barrier on the outside.
Duct System
The duct system must be designed to transport the rated unit
ariflow quietly and efficiently. For maximum blower sound
attenuation, it is recommended that the first few feet of the
supply and return plenums include an internal fiberglass duct
liner or be constructed of ductboard. On metal duct systems,
canvas connectors should be incorporated between the unit
and ductwork. Installing the coil section to uninsulated metal
ductwork in an unconditioned space will result in poor system
performance and lead to condensation formation on the duct
and possible structural damage.
If existing ductwork is utilized, verify that duct system can
accommodate the rated airflow. If the ductwork is undersized,
larger ductwork should be installed. All existing ductwork should
be checked for leaks and repaired as required.
All ductwork must be designed and installed in accordance with
local codes.
Note: The coils are equipped with a supply air duct flange
to facilitate installation. The size of the supply duct must be
designed to transport the rated unit airflow. Proper transition to
the coil duct flange must be utilized.
Furnace Transition and Duct Mounting
1. Ensure evenly distributed airflow between the furnace and the
coil. If the cased coil footprint is substantially different than
that of a matched furnace, it may be necessary to fabricate
either an adapter plate or a tapered transition. The tapered
section should have a minimum transition length of 6".
2. Depending on the configuration, the brackets shown in Figure
6.1 may be utilized to attach the furnace supply, duct system
or transition to the top side of the cased coil.
3. If screws are used to connect the furnace supply, duct system
or transition to the bottom of the cased coil, keep the screws
within the bottom 1" of the casing and only use on the two
sides and back of the casing. Do not use screws on the front
access cover. In addition, screws should have a maximum
length of 3/8". Figures 3.1, 4.1 and 6.2 show the casing
mounting area and dimensions, respectively.
4. If the duct construction around an uncased coil will be
fastened to the uncased coil, screws may only be used in the
bottom 1" of the lower base frame and the sides of the front
connection mounting plate, as shown in Figure 6.2. Do not
install screws into the drain pan or any part of the coil.
5. Ensure that duct joints are sealed airtight, per local codes.
6. Check that the unit is level from side-to-side and front-
to-back. the drain pan is pitched to facilitate condensate
removal.
7. All field wiring entry points must be sealed airtight.
INSTALLATION
Table 6.1 - Horizontal Conversion Kits
Models Part Number
024 3H0388220005
036 3H0388220006
048 3H0388220007
060 3H0388220008
Figure 6.1 - Duct Mounting Flanges - Top
Figure 6.2 - Duct Mounting - Bottom

7
GEO16-506
12. Test condensate drain pan and drain line after installation
is complete. Pour enough water into drain pan to fill drain
trap and line. Check to make sure drain pan is draining
completely, no leaks are found in drain line fittings, and water
is draining from the termination of the primary drain line.
13. It is always recommended that a secondary drain be
installed under a horizontal coil.
14. Drain lines must be in conformance with local codes
Horizontal Installation
1. Refer to Horizontal Conversion Kit instructions if field
conversion is required.
2. The coil may be installed on any level surface strong enough to
support the weight and isolated to prevent sound transmission.
Vibration isolators (by others) are recommended.
3. When installed in an attic or above a drop ceiling, the
installation must conform to all local codes.
4. If the unit is suspended, typically 3/8"-16 threaded rods with a
unistrut or other suitable framing systems are employed. The
entire length of the unit must be supported.
5. If the coil is installed on the attic floor, the unit should be set
in a full size secondary drain pan. The secondary drain pan
should be set on top of a vibration absorbing mesh, on a
plywood base. A secondary drain pan should be used when
installed over a finished living area to provide protection from
water damage in case the primary drain line becomes plugged.
The secondary drain line should terminate somewhere that
is easily visible by the homeowner. Be certain to show the
homeowner the termination location of the secondary drain
line and to explain its purpose. If the coil is installed in a crawl
space, the bottom of the coil must be at least 4” above grade to
prevent flooding during heavy rains.
6. Check that the unit is level from side-to-side and front–to-back.
The drain pan is pitched to facilitate condensate removal.
7. All field wiring entry points must be sealed airtight.
Condensate Piping
The coil drain pan has two 3/4" NPT stainless steel drain fittings.
When the coil is configured for horizontal airflow, four fittings
are present. The two “upper” or “vertical” drain fittings must be
plugged.
1. The drain pan has a primary and auxiliary drain connection.
It is recommended that both the primary and auxiliary drains
are utilized. The installer must always follow local codes
when running condensate drain piping.
2. As the coil sections are not internally trapped, a trap must
be installed in the drain line below the bottom of the drain
pan to ensure free condensate flow (see Figure 8.1). Install
drain lines so that they do not block service access to the
front of the unit or furnace.
3. The coil drain connections must be connected to a drain line
and pitched away from the unit a minimum of 1/8” per foot to
allow the condensate to flow away from the coil.
4. The primary condensate drain must be terminated to an
open drain or sump. Do not connect the condensate drain
to a closed waste system.
5. An open vertical air vent should be installed to overcome
line length, friction and static pressure.
6. Make provisions for disconnecting and cleaning of the
primary drain line should it become necessary.
7. It is recommended that the auxiliary drain be connected to a
drain line for all units.
8. The auxiliary drain should be run to an area where the
homeowner will notice it draining.
9. The drain line should not be smaller than the drain
connection at the condensate pan.
10. The drain line contains cold water and should be insulated
in unconditioned spaces to avoid drain line condensation
from dripping on ceiling, etc.
11. If the coil section is located in an unconditioned space, water in
the trap may freeze. It is recommended that the trap material be
of a type that will allow for expansion of water when it freezes.
INSTALLATION
Figure 8.1 - Condensate Trap Example
Secondary Drain Pan Overflow Switch
It is highly recommended a normally closed, condensate overflow
switch be installed in the secondary drain pan and wired to
the split system terminal strip. When installed, the controller will
shut down the unit in the event of a plugged condensate drain line.
Failure to wire the switch to unit may result in damage to the furnace
or property.
Wire terminals are provided in the control panel for easy connection
of overflow switch. Remove the BLUE jumper between the
terminals and tie in the secondary drain pan overflow switch leads.
Refrigerant Line Sets
Refer to the Split Unit installation manual (GEO16-501) for for
line sizing and line set guidelines.
Thermal Expansion Valve
The coil section is equipped with a TXV that is pre-set from the
factory for optimized cooling. No adjustment is necessary unless
service has been done on the TXV. Table 10.2 shows the coil
TXV initial factory settings. Note that the matched Split system
has two TXV’s, each with independent factory settings. One TXV
is include with the coil and one is installed in the Split unit. Refer
to the Split Ground Source Unit I&S manual for the TXV settings
at the Split unit.
Air Coil
To ensure maximum performance, it is recommended that the
air coil be cleaned before startup. A solution of 10% dishwasher
detergent and water is recommended. Spray both sides of the
coil followed by a thorough clean water rinse.
Leak Testing, Evacuating and Charging
the System
Refer to the Split Unit installation manual for instructions.

8GEO16-506
INSTALLATION
Wiring
WARNING
1. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
2. All appliances must be wired strictly in accordance with
the wiring diagram furnished with the appliance. Any
wiring different from the wiring diagram could result in a
hazard to persons and property.
3. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
Installation of wiring must conform with local building codes,
or in the absence of local codes, with the National Electric
Code ANSI/NFPA 70 - latest edition. Unit must be electrically
grounded in conformance to this code. In Canada, wiring must
comply with CSA C22.1, Part 1, Electrical Code.
Any damage to or failure of units caused by incorrect wiring of
the units is not covered by warranty.
Dual Fuel Setup / Thermostat Wiring
When wiring to a gas furnace, a dual fuel thermostat is required
to prevent the furnace from engaging when the heat pump
is operating. The heat pump is the first and second stage of
heating and the furnace is the backup heat. Refer to Split Unit
I&S manual.
Figure 8.1 - Float Switch Installation
Condensate Overflow Alarm
Modine Cased and Uncased Coils are supplied with a
condensate pan overflow switch kit (PN 3H038786). It is highly
recommended that the switch be installed in the drain pan
and wired to the split system terminal strip. The condensate
alarm is a 24V, normally closed, dry contact. When installed,
the controller will shut down the split system in the event of a
plugged condensate drain line. Failure to wire the switch to the
split system may result in damage to the furnace or property.
Installation of Condensate Pan Switch
The condensate switch is supplied with a float switch, 75' of lead
wire and fastener. The drain pan features a mounting tab on the
front right edge of the pan. Position the float switch mounting
tab on top of the drain pan tab, as shown in Figure 8.1. Locate
the center mounting hole of the float switch with the hole in the
mounting tab. Insert the fastener provided through the holes and
push the pin down to secure the switch in place. The installer
may route the leads back to the split unit or run two wires. Refer
to the Split Unit installation manual for wiring instructions.

9
GEO16-506
START-UP PROCEDURE
IMPORTANT
Start-up and adjustment procedures must be performed by a
qualified service agency.
START-UP PROCEDURE
The unit has been factory tested and set for proper operation,
but a full unit start-up is recommended.
NOTE: If any abnormal operation occurs during the startup
procedure, refer to the Troubleshooting section.
NOTE: Always start the system in heating mode.
Pre-Start Checks
Before applying power to system, use the following checklist to
ensure a complete and proper installation.
• Trace circuits to insure that the unit has been wired according
to the wiring diagram.
• Check that the unit has no visible damage and that all the
components are secure.
• Check that all field electrical and mechanical work has been
performed according to all applicable Federal, State, and Local
codes.
• Low voltage wiring for thermostat, control wiring and the heat
pump controller setup completed.
• Condensate line is open, condensate drain line is correctly
pitched.
• Check air coil for cleanliness.
• Filter is clean and in position.
• Clean all debris from the ducting system.
• Service/access panels are in place.
Unit Startup Procedure
Refer to the Split Unit installation manual, GEO16-501, for
details instructions on system startup.

10 GEO16-506
When servicing or repairing this equipment, use only factory-
approved service replacement parts. A complete replacement
parts list may be obtained by contacting Modine Manufacturing
Company. Refer to the rating plate on the appliance for
complete appliance model number, serial number, and
company address. Any substitution of parts or controls not
approved by the factory will be at the owner’s risk.
PHYSICAL DATA / MAINTENANCE
CAUTION
WARNING
MAINTENANCE
The routine care and maintenance of this unit will increase
longevity, provide for the proper operational performance, and
reduce the probability of failure.
Once the unit is operational, it will be necessary to perform
certain routine maintenance/service checks. Following is a
Maintenance Schedule with the recommended checks. If your
unit is equipped with special features, there may be additional
checks that are required. Consult Modine for assistance.
The use of torque screwdrivers on panel, cover or component
mounting screws is not recommended. Hand-start all screws.
If electric drills are used – set at the lowest possible torque.
1. Do not attempt to reuse any mechanical or electrical
component which has been wet. Such component must
be replaced.
2. Air coil fin edges are sharp, take necessary precautions.
Air Filters
Filters must be clean to obtain maximum performance. They
should be inspected monthly under normal operating conditions
and be replaced when necessary. Units should never be
operated without a filter.
Condensate Drain
In areas where airborne bacteria produce slime in the drain
pan, it may be necessary to treat chemically with an algaecide
approximately every three months to minimize the problem. It
may be necessary to clean the condensate pan periodically to
insure indoor air quality. The condensate drain can pick up lint
and dirt, especially with dirty filters. Inspect twice a year to avoid
the possibility of overflow.
Air Coil
The air coil should be cleaned annually to retain maximum
performance. Inspect once a year under normal operating
conditions. If the air coil shows dirt or debris, use a vacuum with
a gentle end or a rag to clean the debris from the air coil. The
fins are easily damaged, so take care when cleaning.
Cabinet
If a flood occurs, try to expel water as soon as possible. Water
contact for any duration will help corrosion on the cabinet finish.
If the cabinet is dirty, do not spray with water, use a damp rag
with mild detergent, and wipe the system clean.
Table 10.1 - Physical Data
1. Furnace or air handler must be able to provide specified airflows, +/- 5%
Model Size
024 036 048 060
AIR COIL
Total Air Coil Face Area, ft² 4.5 5.0 6.0 7.0
Number of Rows 3 3 3 3
Tube Outside Diameter, in. 3/8 3/8 3/8 3/8
Fins per Inch 13 13 13 13
Suction Line Connection, in. - Sweat 5/8 3/4 3/4 7/8
Liquid Line Connection, in. - Sweat 3/8 3/8 3/8 1/2
Condensate Drain Connection, in. - NPT 3/4 3/4 3/4 3/4
AIRFLOW1
Stage 1 Heat/Cool Required Airflow, CFM / Wet Coil Static Pressure
Drop, in-wc 560 / 0.06 900 / 0.13 1140 / 0.15 1410 / 0.18
Stage 2 Heat/Cool Required Airflow, CFM / Wet Coil Static Pressure
Drop, in-wc 730 / 0.09 1140 / 0.18 1490 / 0.22 1880 / 0.29
Models
024 036 048 060
TXV Turns Closed 3-3/4 1-3/4 6-1/2 3-1/4
Table 10.2 - Coil Factory TXV Settings

11
GEO16-506
REPLACEMENT PARTS / TROUBLESHOOTING
Figure 11.1 - Serial Plate EXAMPLE
TROUBLESHOOTING
Refer to Split Unit manual, GEO16-501, for Troubleshooting
guidance.
REPLACEMENT PARTS
For ease of identification when ordering replacement parts
or contacting the factory about this unit, please provide the
complete model number and unit serial number. This information
can be found on the serial plate attached to the unit (see Figure
11.1). When a component part fails, a replacement part should
be obtained by contacting the local distributor or Modine Sales
Representative. The sales representative can assist with
Return Material Authorizations (RMAs) and potential warranty
claims. The following details are required to process parts
orders and warranty claims:
1. Full description of part required, including unit’s model
number.
2. The complete unit’s serial number.
3. Completed Return Material Authorization (RMA)
4. An appropriate purchase order number.
For further information email modinegeothermal@ccsportal.
com or call 1-877-679-4436 (4GEO).
Table 11.1 - Common Replacement Parts
Model
Size Air Coil Assembly TXV Condensate Overflow Switch
024 3H0387980001 5H0834700002 3H0396720000
036 3H0387980002 5H0834700003 3H0396720000
048 3H0387980003 5H0834700004 3H0396720000
060 3H0387980004 5H0834700005 3H0396720000

Modine Manufacturing Company
1500 DeKoven Avenue
Racine, WI 53403
Phone: [phone] (4GEO)
www.modinehvac.com
© Modine Manufacturing Company 2016
As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice.
COMMERCIAL WARRANTY (For Residential Warranty, see GEO16-510)
Seller warrants its products to be free from defects in material and
workmanship, EXCLUSIVE, HOWEVER, of failures attributable to the use
of materials substituted under emergency conditions for materials normally
employed. This warranty covers replacement of any parts furnished from the
factory of Seller, but does not cover labor of any kind and materials not
furnished by Seller, or any charges for any such labor or materials, whether
such labor, materials or charges thereon are due to replacement of parts,
adjustments, repairs, or any other work done. This warranty does not apply to
any equipment which shall have been repaired or altered outside the factory of
Seller in any way so as, in the judgment of Seller, to affect its stability, nor
which has been subjected to misuse, negligence, or operating conditions in
excess of those for which such equipment was designed. This warranty does
not cover the effects of physical or chemical properties of water or steam or
other liquids or gases used in the equipment.
BUYER AGREES THAT SELLER’S WARRANTY OF ITS PRODUCTS TO BE
FREE FROM DEFECT IN MATERIAL AND WORKMANSHIP, AS LIMITED
HEREIN, SHALL BE IN LIEU OF AND EXCLUSIVE OF ALL OTHER
WARRANTIES, EITHER EXPRESS OR IMPLIED, WHETHER ARISING
FROM LAW, COURSE OF DEALING, USAGE OF TRADE, OR OTHERWISE,
THERE ARE NO OTHER WARRANTIES, INCLUDING WARRANTY OF
MERCHANTABILITY OR FITNESS FOR PURPOSE, WHICH EXTEND
BEYOND THE PRODUCT DESCRIPTION CONFIRMED BY BUYER AND
SELLER AS OF THE DATE OF FINAL AGREEMENT.
This warranty is void if the input to the product exceeds the rated input as
indicated on the product serial plate by more than 5% on gas-fired and oil-fired
units, or if the product in the judgment of SELLER has been installed in a
corrosive atmosphere, or subjected to corrosive fluids or gases, been subjected
to misuse, negligence, accident, excessive thermal shock, excessive humidity,
physical damage, impact, abrasion, unauthorized alterations, or operation
contrary to SELLER’S printed instructions, or if the serial number has been
altered, defaced or removed.
BUYER AGREES THAT IN NO EVENT WILL SELLER BE LIABLE FOR
COSTS OF PROCESSING, LOST PROFITS, INJURY TO GOODWILL, OR
ANY OTHER CONSEQUENTIAL OR INCIDENTAL DAMAGES OF ANY KIND
RESULTING FROM THE ORDER OR USE OF ITS PRODUCT, WHETHER
ARISING FROM BREACH OF WARRANTY, NONCONFORMITY TO
ORDERED SPECIFICATIONS, DELAY IN DELIVERY, OR ANY LOSS
SUSTAINED BY THE BUYER.
BUYER’S REMEDY FOR BREACH OF WARRANTY, EXCLUSIVE OF ALL
OTHER REMEDIES PROVIDED BY LAW, IS LIMITED TO REPAIR OR
REPLACEMENT AT THE FACTORY OF SELLER, ANY COMPONENT WHICH
SHALL, WITHIN THE APPLICABLE WARRANTY PERIOD DEFINED HEREIN
AND UPON PRIOR WRITTEN APPROVAL, BE RETURNED TO SELLER
WITH TRANSPORTATION CHARGES PREPAID AND WHICH THE
EXAMINATION OF SELLER SHALL DISCLOSE TO HAVE BEEN DEFECTIVE;
EXCEPT THAT WHEN THE PRODUCT IS TO BE USED BY BUYER AS A
COMPONENT PART OF EQUIPMENT MANUFACTURED BY BUYER,
BUYER’S REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE
LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER. FOR
GAS-FIRED PRODUCTS INSTALLED IN HIGH HUMIDITY APPLICATIONS
AND UTILIZING STAINLESS STEEL HEAT EXCHANGERS, BUYER’S
REMEDY FOR BREACH, AS LIMITED HEREIN, SHALL BE LIMITED TO
TEN YEARS FROM DATE OF SHIPMENT FROM SELLER.
These warranties are issued only to the original owner-user and cannot be
transferred or assigned. No provision is made in these warranties for any
labor allowance or field labor participation. Seller will not honor any expenses
incurred in its behalf with regard to repairs to any of Seller’s products. No
credit shall be issued for any defective part returned without proper written
authorization (including, but not limited to, model number, serial number,
date of failure, etc.) and freight prepaid.
OPTIONAL SUPPLEMENTAL WARRANTY
Provided a supplemental warranty has been purchased, Seller extends the
warranty herein for an additional four (4) years on certain compressors.
Provided a supplemental warranty has been purchased, Seller extends the
warranty herein for an additional four (4) years or nine (9) years on certain
heat exchangers.
EXCLUSION OF CONSUMABLES & CONDITIONS BEYOND SELLER’S
CONTROL
This warranty shall not be applicable to any of the following items: refrigerant
gas, belts, filters, fuses and other items consumed or worn out by normal wear
and tear or conditions beyond Seller’s control, including (without limitation as
to generality) polluted or contaminated or foreign matter contained in the air or
water utilized for heat exchanger (condenser) cooling or if the failure of the part
is caused by improper air or water supply, or improper or incorrect sizing of
power supply.
Component
Applicable Models “APPLICABLE WARRANTY PERIOD”
Heat Exchangers
Gas-Fired Units
Heat Exchangers
Low Intensity Infrared Units
Compressors
Condensing Units for Cassettes
Burners
Low Intensity Infrared Units
Other
Components excluding Heat Exchangers,
Coils, Condensers, Burners, Sheet Metal
Heat Exchangers/Coils
Indoor and Outdoor Duct Furnaces and
System Units, Steam/Hot Water Units,
Oil-Fired Units, Electric Units, Cassettes,
Vertical Unit Ventilators, Geothermal Units
Compressors
Vertical Unit Ventilators, Geothermal Units
Burners
High Intensity Infrared Units
Sheet Metal Parts
All Products
TEN YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
TEN YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN TEN YEARS
FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN ONE
HUNDRED TWENTY-SIX MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER
OCCURS FIRST
FIVE YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
FIVE YEARS FROM DATE OF RESALE BY BUYER OR ANY OTHER USER, WITHIN FIVE YEARS
FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN SIXTY-SIX
MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST
TWO YEARS FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
TWO YEARS FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN
THIRTY MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST
ONE YEAR FROM DATE OF FIRST BENEFICIAL USE BY BUYER OR ANY OTHER USER, WITHIN
ONE YEAR FROM DATE OF RESALE BY BUYER IN ANY UNCHANGED CONDITION, OR WITHIN
EIGHTEEN MONTHS FROM DATE OF SHIPMENT FROM SELLER, WHICHEVER OCCURS FIRST