Thermo Pride AH2436E1 Manual

13 & 14 SEER
AIR HANDLER
INSTALLATION & SERVICE MANUAL
MODELS: AH2436E1, AH4260E1
PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION AND BEFORE
PERFORMING ANY SERVICE OR MAINTENANCE. THESE INSTRUCTIONS MUST
BE LEFT WITH THE USER AND SHOULD BE RETAINED FOR FUTURE
REFERENCE BY QUALIFIED SERVICE PERSONNEL.
: Improper installation, adjustment, alteration, service, or maintenance can
cause injury or property damage. Refer to this manual. For assistance or additional
information consult a qualified installer, service agency, or manufacturer listed below.
THERMO PRODUCTS, LLC.
BOX 217
NORTH JUDSON, IN 46366
PHONE: [phone] MADE IN USA
MAC-183
ECN 4849-MA

TABLE OF CONTENTS
SECTION BEGINNING PAGE
SAFETYSECTION 1
KNOCKDOWN OF AIR HANDLER 2
REASSEMBLY OF AIR HANDLER 3
SETTING UP THE A-COIL FOR AIR CONDITIONING 3
INSTALLATION OF HOT WATER COIL 4
BLOWER AIR ADJUSTMENT 6
DUCTSYSTEM 9
DUCT SIZING CHART 10
INDOOR EVAPORATOR COIL 10
TUBINGLINESETS 10
HOW TO MEASURE LIQUID SUB-COOLING 14
MEASURING TEMPERATURE DROP ACROSS THE “A” COIL 15
ELECTRICAL 15
UA ADAPTER CABINET 16
RECOMMENDED SUSPENSION PROCEDURE FOR AH AIR HANDLER 16
ECM TROUBLE SHOOTING 17
TROUBLE SHOOTING CHARTS 20
SEQUENCE OF OPERATION 21
REPLACEMENT PARTS LIST 23

All installations and services must be performed by qualified personnel.
SAFETY SECTION
This page contains various warnings and cautions found throughout this Service and Installation Manual.
Please read and comply with the statements on the cover and the statements below.
: Improper installation, adjustment, alteration, service, or maintenance can cause injury
or property damage. Refer to this manual. For assistance or additional information consult a
qualified installer, service agency, or manufacturer listed below.
: If drilling or screwing into panel or plate is necessary, make certain drill or screw does not
penetrate into any part of evaporator coil or hot water coil and cause damage. Personal injury and/or
property damage may result.
: Do not use this system if any part has been under water. Immediately call a qualified
service agency to inspect the system and to replace any part of the electrical or control system which has
been under water.
: The cooling and heating coils must be cleaned by a qualified service person.
: This air handler is not to be used to condition during construction.
: When testing electrical equipment, always follow standard electrical procedures and
precautions.
: DO NOT wet electronic components during hydronic testing. Wetting electronic
components may damage circuitry and cause a hazardous situation. Dry moisture from all leads and
terminals if wetting occurs. Wait at least 24 hours for the circuit to fully dry before energizing the
system.
: Personal injury or property damage could result from major repair or service of this
system by anyone other than a qualified contractor.
: If you do not follow these instructions exactly an unsafe condition may result causing
personal injury, loss of life or property damage.
Installation and service personnel are required by some states to be licensed. Persons not qualified shall
not install this equipment nor interpret these instructions.
All local codes and regulations take precedence over the instructions in this manual and should be
followed accordingly. In the absence of local codes, installation must conform with these instructions,
regulations of the National Fire Protection Association and provisions of the National Electric Code.
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All installations and services must be performed by qualified personnel.
AIR HANDLER
Each air handler is shipped with an evaporator preinstalled. The AH2435E1 is shipped with a
12U2430AG15 evaporator coil for 2 to 3 ton operation. The AH4260E1is shipped with a 12U3648AG17
evaporator coil for 3 to 5 ton operation.
The construction of the air handler permits easy knockdown and reassembly. See Figure A.
Figure A.
FOLLOW THESE STEPS FOR KNOCKDOWN OF AIR HANDLER:
1. Start with unit setting in a vertical position(Figure A).
2. Remove middle door.
3. Remove screws from bottom door, top door, and top front panel. Remove doors and top panel of air
handler.
4. Remove the retention clip from in front of the A-coil drain pan and the horizontal drain pan shipping
screw(s) from the right side casing.
5. Remove the A-coil assembly.
6. Disconnect power leads and unplug circulation pump connector from the blower control board.
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All installations and services must be performed by qualified personnel.
7. Remove the screws that secure the blower assembly to the blower pan and pull blower sub-assembly
out the front of the unit.
8. Remove screws that secure the blower pan to the side & back casings.
9. Push the front edges of the side casings slightly apart and remove the blower pan.
10. Remove screws from the bottom and the casing back.
11. Remove casing back and side casings from the bottom.
REASSEMBLY OF AIR HANDLER
To reassemble the air handler, reverse steps above starting with number 10.
SETTING UP THE A-COIL FOR AIR CONDITIONING
The AH2436E1 & AH4260E1 come with the A-coil pre-installed for vertical and left to right horizontal
airflow.
IMPORTANT: When air handler is installed in attic above a finished ceiling, it is recommended that
a safety overflow pan with its own separate drain be installed under the entire unit.
For a right to left horizontal air flow the following steps 1-8 must be followed.
Otherwise skip to step 9.
Reversing the horizontal orientation
1. Remove the middle door of the air handler.
2. Remove the bottom door of the air handler.
3. Remove the retention clip from in front of the A-coil drain pan.
4. Remove the horizontal drain pan shipping screw(s) from the right side casing.
5. Remove the A-coil assembly and slip the horizontal drain pan assembly off of the right side of the A-
coil.
5a. Remove the bottom right side support L-bracket and remount in the left hand position using the pre-
punched holes for a guide.
6. Slip the horizontal drain pan assembly onto the left side of the A-coil.
7. Replace the A-coil assembly into the air handler. The A-coil drain pan should slide under the rear
retention clip. The horizontal drain pan assemble should rest against the right panel insulation and the
bottom side support.
8. Replace the retention clip for the front of the evaporator drain pan.
For all orientations
9. Cut open the appropriate drain pan drain access hole in the bottom door.
10. Slip the Suction line grommet panel over the suction line up to the bottom door surface.
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