AMST Installation Manual

ManualsBrandsGoodman ManualsCentral Air ConditionersAMST - 2.0 Ton - Air Handler - Multi-Position - 208-230/1/60 - 9-Speed ECM Motor with TXV

AMST***U1400**

AIR HANDLERS INSTALLATION &

OPERATING INSTRUCTIONS

19001 Kermier Rd., Waller, TX 77484

www.daikinac.com

RECOGNIZE THIS SYMBOL

AS A SAFETY PRECAUTION.

NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN

ARE SUBJECT TO CHANGE WITHOUT NOTICE

Contents

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

6 Installation Location ................................................... 4

 .................................................. 5

6.2 Horizontal Left Installation ...................................... 5

 5

6.4 Humid Environment Installations ............................ 6

6.4.1 All Installations – Humid Environments ............... 6

 6

6.4.1.3 Horizontal Installations – Humid Environments 6

7 Refrigerant Lines ........................................................ 7

7.1 Tubing Size ............................................................. 7

7.2 Tubing Preparation ................................................. 7

7.3 Tubing Connections ................................................ 7

7.4 Thermal Expansion Valve System Adjustment ....... 9

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

12.4.2 Air Handler - Non-Circuit Breaker Heat Kits ..... 13

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) ............................... 14

13 Achieving 1.4% Low Leakage Rate ....................... 16

14 Start-Up Procedure.................................................. 16

15 Regular Maintenance .............................................. 16

 ............................................................... 17

17 Air Handler Low Voltage Connections ................... 19

18 Wiring Diagrams ...................................................... 20

19 Start-Up Checklist .................................................... 26

ONLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL,

ADJUST, SERVICE OR REPAIR(HEREINAFTER, “SERVICE”)

THE EQUIPMENT SPECIFIED IN THIS MANUAL SHOULD

SERVICE THE EQUIPMENT. THE MANUFACTURER WILL

NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY

DAMAGE ARISING FROM IMPROPER 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 INSTALLATION, ADJUSTMENT, SERVICING 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 TRAINING MAY RESULT IN PRODUCT DAMAGE,

PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

Summary of content (28 pages)

PAGE 1
AMST***U1400** AIR HANDLERS INSTALLATION & OPERATING INSTRUCTIONS Contents 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 ..................
PAGE 2
WARNING HIGH VOLTAGE DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. CARBON MONOXIDE POISONING HAZARD Special Warning for Installa on of Furnace or Air Handling Units in Enclosed Areas such as Garages, U lity Rooms or Parking Areas WARNING Carbon monoxide producing devices (such as an automobile, space heater, gas water heater, etc.
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2 Shipping Inspection B 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.
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Replacement Parts 5.5 Horizontal Applications If installed above a finished living space, a secondary drain pan (as required by many building codes), must be installed under the entire unit and its condensate drain line must be routed to a location such that the user will see the condensate discharge. When reporting shortages or damages, or ordering repair parts, give the complete product model and serial numbers as stamped on the product.
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Kit Number DPK1 Drain Port Plug Description Side Drain Port Plug 6.3 Horizontal Right Installation / Downflow Installation NOTE: For AMST24BU1400** only: If installing a filter, an external filter must be used when installing the unit in Horizontal Right, or if the side drain pan is not removed for Down Flow application. A filter will not fit on the internal filter rails in these applications.
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NOTE: If removing only the coil access panel from the unit, the filter access panel must be removed first. Failure to do so will result in panel damage. 6.4 Humid Environment Installations NOTE: Each service kit mentioned in this instruction is available through your local distributor. The kits are not supplied with the air handler and must be used to assist with condensation management in humid environment applications. The individual installation instructions provided with each kit must be followed. 6.4.
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recommended when brazing to avoid burning the serial plate or the finish of the unit. Heat trap or wet rags must be used to protect heat sensitive components such as service valves and TXV valves sensing bulb. WARNING HORIZONTAL LEFT Figure 5 A QUENCHING CLOTH IS STRONGLY RECOMMENDED TO PREVENT SCORCHING OR MARRING OF THE EQUIPMENT FINISH WHEN BRAZING CLOSE TO THE PAINTED SURFACES. USE BRAZING ALLOY OF 5% MINIMUM SILVER CONTENT. CAUTION APPLYING TOO MUCH HEAT TO ANY TUBE CAN MELT THE TUBE.
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Upper Tie Plate Control Deck Blower Access Panel Downﬂow Bracket Coil Access Panel Center Support Tubing Panel Filter Bracket Filter Access Panel UV Knockout Internal Part Terminology Figure 7 Coil Installation For Downflow Figure 9 Important Note: Ensure coil slides on the rails along the groove provided on the drain pan side walls. Failure to do so will result in improper condensate drainage.
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3. Adjust Superheat by turning the TXV valve stem clockwise to increase and counterclockwise to decrease. Adjustments should be made opening or closing the valve by no more than ¼ turn at a time. Allow the system to stabilize 15 to 20 minutes before making additional adjustments if necessary. 4. After adjustments are complete replace cap on adjustment stem and tighten 1/6 turn. 5. Remove gauges and check the Schrader ports for leaks and tighten valve cores if necessary. Install caps finger tight. 7.
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NOTE: Water coming from secondary line means the coil primary drain is plugged and needs immediate attention. SATURATED LIQUID PRESSURE TEMPERATURE CHART LIQUID PRESSURE SATURATED LIQUID TEMPERATURE °F PSIG R-410A 200 210 220 225 235 245 255 265 275 285 295 305 325 355 375 405 415 425 435 445 475 500 525 550 575 600 625 70 73 76 78 80 83 85 88 90 92 95 97 101 108 112 118 119 121 123 125 130 134 138 142 145 149 152 CAUTION IF SECONDARY DRAIN IS NOT INSTALLED, THE SECONDARY ACCESS MUST BE PLUGGED.
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Electric Heat IMPORTANT NOTE: The evaporator coil is fabricated with oils that may dissolve styrofoam and certain types of plastics. Therefore, a removal pump or float switch must not contain any of these materials. Refer to the installation manual provided with the electric heat kit for the correct installation procedure. All electric heat must be field installed. If installing this option, the ONLY heat kits that are permitted to be used are the HKS and HKTSD series.
PAGE 12
CFM 12.1 Building Electrical Service Inspection This unit is designed for single-phase electrical supply 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 range shown.
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HEATER KIT (kW) Model 3 5 6 8 10 15 19 20 AMST24BU14 715 715 715 715 850 AMST30BU14 715 715 715 715 875 1050 AMST36BU14 715 715 715 715 875 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 1715 25 1930 *Airflows shown are to be considered the absolute minimum allowable for the Air handler a
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12.4.1 Air Handler Only (Non-Heat Kit Models) IMPORTANT: Installation of Air Handler must follow any local codes/regulations. The manufacture recommends that when a heater kit is not installed, a field supplied disconnect switch or breaker should be installed in the electrical circuit that will allow power to be shut-off for service or maintenance. The building supply connects to the stripped black and red wires contained in the air handler electrical compartment cavity.
PAGE 15
12.6.2 Selecting Speed Taps 6-9 (Not applicable to AMST60DU1400**) When selecting speed taps 6-9, move the Black (BK) jumper, jumping T1 to any of terminal block locations T2 T5. This will shift the motor to the 6-9 taps when the Purple (PU) lead from the blower relay is placed on the same tap as the Black (BK) jumper. See Table 13. OR Tap-6 Tap-7 Tap-8 Tap-9 WH BR PU YL T1 T2 T3 T4 T5 TB Engaged BK BK BK BK PU+BK PU+BK T1+T2 T1+T3 T1+T4 T1+T5 PU+BK PU+BK 12.6.
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13 Achieving 1.4% Low Leakage Rate 15 Regular Maintenance Ensure all the gaskets remain intact on all surfaces as shipped with the unit. These surfaces are areas between the upper tie plate and blower access panel, blower access and coil access panels, and between the coil access and filter access panels. Ensure upon installation, that the plastic breaker cover is sitting flush on the blower access panel and all access panels are flush with each other and the cabinet.
PAGE 17
16 Airflow Data Model AMST24BU1400AA AMST30BU1400AA AMST36BU1400AA AMST36CU1400AA Speed Tap T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T2 T3 T4 T5 T6 T7 T8 T9 0.1 720 850 900 1030 825 935 1100 1045 1215 750 920 985 1185 1070 620 840 855 995 750 920 985 1185 1070 620 840 855 995 1120 1285 1430 1735 1830 1165 1450 1070 1560 0.
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Model AMST42CU1400AA AMST48CU1400AA AMST48DU1400AA AMST60DU1400AA Speed Tap T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T2 T3 T4 T5 T6 T7 T8 T9 T1 T6 T7 T8 T9 0.1 1165 1210 1215 1495 1435 1410 1440 1230 1495 1420 1580 1635 1735 1820 1465 1725 1755 1325 1425 1510 1605 1875 1755 1350 1140 1605 1605 1215 1815 1360 2070 1970 0.2 1140 1185 1190 1470 1410 1385 1415 1205 1470 1390 1550 1610 1710 1795 1435 1700 1730 1295 1395 1480 1580 1855 1730 1320 1105 1580 1580 1175 1785 1325 2045 1945 0.
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 WARNING HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. #18 GA. 4 WIRES WITH COOLING 3 WIRES WITHOUT W G Y R AIR HANDLER C RD R GR G WH W1 W2 YL TO CONDENSING UNIT 24V CONNECTION BL Y1 YL YL Y2 O BL TB COOLING UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW #18 GA.
PAGE 21
WARNING HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. SEE NOTE #4 C W2 Y O R Y O C W2 G R #18 GA. 7 WIRE E AIR HANDLER YL BR WH C RD RD BL YL WH R GR G BR OR W1 WH W2 BL BL Y1 WH YL Y2 BL YL O OR TB HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW SEE NOTE #4 C W2 O Y R Y O C W2 G R #18 GA.
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BL WH GR RD Y1 GR WH BR O RD or BK A 4 BL B 1 7 1 2 3 4 5 CR DH COPPER POWER SUPPLY (USE RATING PLATE) USE MIN. 75° C FIELD WIRE Y2 PU PLM PLF BL WH IF REPLACEMENT OF THE ORIGINAL WIRES SUPPLIED WITH THIS ASSEMBLY IS NECESSARY, USE WIRE THAT CONFORMS TO THE NATIONAL ELECTRIC CODE. W2 BK 1. RED WIRES TO BE ON TRANSFORMER TERMINAL "3" FOR 240 VOLTS AND ON TERMINAL "2" FOR 208 VOLTS. 2.
PAGE 23
RD or BK 23 BL Y1 WH BR O YL BL 1 2 3 4 5 RD or BK DH COPPER POWER SUPPLY (USE RATING PLATE) USE MIN. 75° C FIELD WIRE Y2 PU IF REPLACEMENT OF THE ORIGINAL WIRES SUPPLIED WITH THIS ASSEMBLY IS NECESSARY, USE WIRE THAT CONFORMS TO THE NATIONAL ELECTRIC CODE. W2 BR SEE NOTES 2 & 6 PLM PLF 1. RED WIRES TO BE ON TRANSFORMER TERMINAL "3" FOR 240 VOLTS AND ON TERMINAL "2" FOR 208 VOLTS. 2. SEE COMPLETE WIRING DIAGRAMS IN INSTALLATION INSTRUCTIONS FOR PROPER LOW VOLTAGE WIRING CONNECTIONS. 3.
PAGE 24
WARNING HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. 3-Phase Heat Kit 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 onetime application of these corrosive chemicals can cause premature aluminum evaporator coil failure. Any cleaners that contain corrosive chemicals including, but not limited to, chlorine and hydroxides, should not be used.
PAGE 26
19 Start-Up Checklist Air Handler / Coil Model Number Serial Number ELECTRICAL Line Voltage (Measure L1 and L2 Voltage) Secondary Voltage (Measure Transformer Output Voltage) Blower Amps Heat Strip 1 - Amps Heat Strip 2 - Amps BLOWER EXTERNAL STATIC PRESSURE Return Air Static Pressure Supply Air Static Pressure Total External Static Pressure (Ignoring +/- from the reading above, add total here) TEMPERATURES Return Air Temperature (Dry bulb / Wet bulb) Cooling Supply Air Temperature (Dry bulb / Wet bulb) H
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