Table of Contents
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AMST***U1400**
AIR HANDLERS INSTALLATION &
OPERATING INSTRUCTIONS
1 Important Safety Instructions .................................... 2
2 Shipping Inspection ................................................... 3
2.1 Parts ....................................................................... 3
2.2 Handling ................................................................. 3
2.3 Shipping Material Removal..................................... 3
2.3.1 Blower Support Bracket Removal ....................... 3
3 Codes & Regulations ................................................. 3
4 Replacement Parts ..................................................... 4
5 Pre-Installation Considerations ............................... 4
5.1 Preparation ............................................................. 4
5.2 System Matches ..................................................... 4
5.3 Interconnecting Tubing ........................................... 4
5.4 Clearances ............................................................. 4
5.5 Horizontal Applications ........................................... 4
5.6 Access .................................................................... 4
6 Installation Location ................................................... 4
6.1 Upflow Installation .................................................. 4
6.2 Horizontal Left Installation ...................................... 5
6.3 Horizontal Right Installation / Downflow Installation 5
6.4 Humid Environment Installations ............................ 6
6.4.1 All Installations - Humid Environments ............... 6
7 Refrigerant Lines ........................................................ 7
7.1 Tubing Size ............................................................. 7
7.2 Tubing Preparation ................................................. 7
7.3 Tubing Connections ................................................ 7
8 Condensate Drain Lines ........................................... 10
9 Ductwork .................................................................... 11
9.1 Return Ductwork .................................................... 11
10 Return Air Filters ..................................................... 11
11 Electric Heat ............................................................. 11
12 Electrical and Control Wiring ................................. 12
12.1 Building Electrical Service Inspection .................. 12
12.2 Wire Sizing .......................................................... 12
12.3 Maximum Overcurrent Protection (MOP) ............ 12
12.4 Electrical Connections - Supply Voltage ............. 13
12.4.1 Air Handler Only (Non-Heat Kit Models) ........... 13
Do not bypass safety devices.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN
ARE SUBJECT TO CHANGE WITHOUT NOTICE
Contents
© 2021-2023 Daikin Comfort Technologies Manufacturing, L.P.
19001 Kermier Rd., Waller, TX 77484
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-4004C Date: April 2023
Only personnel that have been trained to install, adjust,
service, maintenance or repair (hereinafter, "service")
the equipment specified this manual should service the
equipment.
This equipment is not intended for use by persons
(including children) with reduced physical, sensory or
mental capacities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not
play with the equipment.
The manufacturer will not be responsible for any injury
or property damage arising from improper supervision,
service or service procedures. If you service this unit, you
assume responsibility for any injury or property damage
which may result. In addition, in jurisdictions that require
one or more licenses to service the equipment specified in
this manual, only licensed personnel should service the
equipment. Improper supervision, installation, adjustment,
servicing, maintenance or repair of the equipment specified
in this manual, or attempting to install, adjust, service
or repair the equipment specified in this manual without
proper supervision or training may result in product
damage, property damage, personal injury or death.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
WARNING
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Summary of Contents for Daikin AMST U1400 Series
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Page 1: Table Of Contents
AMST***U1400** © 2021-2023 Daikin Comfort Technologies Manufacturing, L.P. 19001 Kermier Rd., Waller, TX 77484 AIR HANDLERS INSTALLATION & www.goodmanmfg.com -or- www.amana-hac.com OPERATING INSTRUCTIONS P/N: IO-4004C Date: April 2023 Contents WARNING 1 Important Safety Instructions ........2 2 Shipping Inspection ........... 3 Only personnel that have been trained to install, adjust, 2.1 Parts ............... -
Page 2: Important Safety Instructions
12.4.3 Air Handler With Circuit Breaker Heat Kit ..13 12.5 Low Voltage Connections ........13 12.5.1 Thermostats ............13 12.6 Speed Tap Adjustment ......... 14 12.6.1 Selecting Speed Taps 1-5 ......... 14 12.6.2 Selecting Speed Taps 6-9 ......... 14 12.6.3 AMST60DU1400** (ONLY) ....... -
Page 3: Shipping Inspection
2 Shipping Inspection Always transport the unit upright; laying the unit on its side or top during transit may cause equipment damage. The installer should inspect the product upon receipt for shipping damage and subsequent investigation is the responsibility of the carrier. The installer must verify the model number, specifications, electrical characteristics, and accessories are correct prior to installation. -
Page 4: Replacement Parts
This unit should be installed in a manner so that it is not accessible to the public. HOMEOWNER SUPPORT DAIKIN COMFORT TECHNOLOGIES 6 Installation Location MANUFACTURING, L.P. 19001 KERMIER ROAD NOTE: These air handlers are designed for indoor... -
Page 5: Horizontal Left Installation
6. For Downflow Installation: a. Position the unit in the downflow position. b. Using the drain pan to hold the coil assembly, slide the coil assembly back into the cabinet on the downflow brackets as shown in Figure 9. c. Reinstall the center support (if removed) using the two (2) screws removed in Step 3. -
Page 6: Humid Environment Installations
3. Removal of the center support is required on units DFKE-02 DFKE-03 with 21” wide cabinet. Remove and retain the two (2) screws that secure the center support to the cabinet. AMST24B AMST48C Remove the center support. AMST30B AMST48D 4. Position the unit in the downflow position. AMST36B AMST60D 5. -
Page 7: Refrigerant Lines
NOTE: To prevent possible damage to the tubing joints, do not handle coil assembly with manifold or flowrator tubes. Always use clean gloves when handling coil assemblies. NOTE: The use of a heat shield is strongly recommended when brazing to avoid burning the serial plate or the finish of the unit. - Page 8 Upper Tie Plate Control Deck Blower Access Panel Downflow Coil Bracket Tubing Access Panel Panel Center Support Filter Bracket Filter Access Panel Knockout Internal Part Terminology External Part Terminology Figure 7 Figure 8 Coil Installation For Downflow Figure 9 Access Panel Configuration for Downflow or Important Note: Ensure coil slides on the rails along Horizontal Right the groove provided on the drain pan side walls.
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Page 9: Thermal Expansion Valve System Adjustment
7.4 Thermal Expansion Valve System Adjustment 3. Adjust Superheat by turning the TXV valve stem The following information for the indoor unit should be clockwise to increase and counterclockwise to verified before attempting to charge system or adjust TXV if decrease. -
Page 10: Condensate Drain Lines
NOTE: Water coming from secondary line means the SATURATED LIQUID PRESSURE coil primary drain is plugged and needs immediate TEMPERATURE CHART attention. SATURATED LIQUID LIQUID PRESSURE TEMPERATURE °F CAUTION PSIG R-410A If secondary drain is not installed, the secondary access must be plugged. -
Page 11: Ductwork
11 Electric Heat IMPORTANT NOTE: The evaporator coil is fabricated with oils that may dissolve styrofoam and certain types Refer to the installation manual provided with the electric of plastics. Therefore, a removal pump or float switch heat kit for the correct installation procedure. All electric must not contain any of these materials. -
Page 12: Electrical And Control Wiring
12.1 Building Electrical Service Inspection HEAT KIT NOMINAL kW This unit is designed for single-phase electrical supply 15 19/20 25 only. DO NOT OPERATE ON A THREE-PHASE POWER SUPPLY. Measure the power supply to the unit. The supply voltage must be measured and be in agreement with the unit nameplate power requirements and within the 1000 range shown. -
Page 13: Electrical Connections - Supply Voltage
HEATER KIT (kW) Model AMST24BU14 AMST30BU14 1050 AMST36BU14 1050 AMST36CU14 1170 1170 1170 1170 1345 1345 AMST42CU14 1170 1170 1170 1170 1345 1345 AMST48CU14 1170 1170 1170 1170 1345 1345 AMST48DU14 1240 1240 1240 1240 1520 1520 AMST60DU14 1590 1590 1590 1590 1715... - Page 14 12.4.1 Air Handler Only (Non-Heat Kit Models) 12.6 Speed Tap Adjustment IMPORTANT: Installation of Air Handler must follow any AMST**U1400** air handlers feature 9-speed energy local codes/regulations. The manufacture recommends efficient blower motors. The motors run at a constant that when a heater kit is not installed, a field supplied torque with very low power consumption.
- Page 15 12.6.2 Selecting Speed Taps 6-9 (Not applicable to 12.6.3 AMST60DU1400** (ONLY) For high static applications, no speed tap or airflow AMST60DU1400**) When selecting speed taps 6-9, move the Black (BK) modifications should be made from the factory settings. To jumper, jumping T1 to any of terminal block locations T2 - obtain T1 airflow for low static applications, the Purple (PU) T5.
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Page 16: Warning
13 Achieving 1.4% Low Leakage Rate 15 Regular Maintenance Ensure all the gaskets remain intact on all surfaces as The only item required to be maintained on a regular basis shipped with the unit. These surfaces are areas between by the user is the circulating air filter(s). Filter should be the upper tie plate and blower access panel, blower access cleaned or replaced regularly, typically once per month. - Page 17 16 Airflow Data CFM @ STATIC PRESSURE (IN W.C.) Speed Model 1030 1005 AMST24BU1400AA 1100 1080 1035 1020 1045 1025 1215 1195 1155 1145 1105 1095 1045 1040 1185 1165 1125 1115 1070 1060 1015 1010 AMST30BU1400AA 1070 1050 1005 1185 1165 1125...
- Page 18 16 Airflow Data CFM @ STATIC PRESSURE (IN W.C.) Speed Model 1165 1140 1085 1065 1210 1185 1130 1110 1040 1025 1215 1190 1135 1120 1055 1040 1495 1470 1425 1415 1365 1355 1305 1295 1220 AMST42CU1400AA 1435 1410 1360 1345 1295 1285...
- Page 19 17 Air Handler Low Voltage Connections The following composite wiring diagrams detail various configurations in which the air handlers can be used. Examples include single-stage cooling and heat pump with single or two-stage electric heating. All these configurations can be applied with convenient connections to outdoor thermostat applications.
- Page 20 18 Wiring Diagrams HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH #18 GA. 4 WIRES WITH COOLING 3 WIRES WITHOUT AIR HANDLER TO CONDENSING UNIT 24V CONNECTION...
- Page 21 18 Wiring Diagrams SEE NOTE #4 #18 GA. 7 WIRE AIR HANDLER BL BL HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW SEE NOTE #4 #18 GA. 7 WIRE AIR HANDLER HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 15 kW AND ABOVE NOTES: NOMENCLATURE: COLOR CODES...
- Page 22 18 Wiring Diagrams AMST**U1400** (1.5T - 4T) Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 23 18 Wiring Diagrams AMST60DU1400** Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 24 18 Wiring Diagrams 3 Phase Heat Kit HIGH VOLTAGE! ISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT ULTIPLE POWER SOURCES MAY BE PRESENT AILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
- Page 25 AIR HANDLER AIR HANDLER HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS Replace or Clean Filter It has been determined that many coil cleaners and drain pan tablets contain corrosive chemicals that can be harmful to aluminum tube and fin evaporator coils. Even a one- IMPORTANT NOTE: Never operate unit without a filter time application of these corrosive chemicals can cause installed as dust and lint will build up on internal parts...
- Page 26 19 Start-Up Checklist Air Handler / Coil Model Number Serial Number ELECTRICAL Line Voltage (Measure L1 and L2 Voltage) L1 - L2 Secondary Voltage (Measure Transformer Output Voltage) R - C Blower Amps Heat Strip 1 - Amps Heat Strip 2 - Amps BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure IN.
- Page 27 THIS PAGE IS INTENTIONALLY LEFT BLANK...
- Page 28 GOODMAN BRAND ® For Product Registration, please register as follows: Daikin Products: (https://daikincomfort.com/owner-support/product-registration). Goodman® Brand products: (https://www.goodmanmfg.com/product-registration). Amana® Brand products: (http://www.amana-hac.com/product-registration). You can also scan the QR code on the right for the product brand you purchased to be directed to the Product Registration page.
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Questions and answers
When do I switch it to setting “emergency heat”?
The Daikin AMST U1400 Series should be switched to the emergency heat setting when the primary heating system is not functioning properly or has failed. This setting allows the system to use backup electric heat to maintain indoor comfort.
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when I change the air filter, should the arrow point to the top of the unit or the bottom?