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Aspen LAM Series Installation Manual & Operation Manual

R410a multi-position air handlers
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A1
REFRIGERANT
AAM
AEM
SERIES
Multi-Position,
Electric Heat
Copper Coil Air
Handler
LAM
LEM
SERIES
Multi-Position,
Electric Heat
Aluminum Coil
Air Handler
373 Atascocita Rd.,
Humble, TX 77396
Phone: 800.423.9007
Fax: 281.441.6510
www.aspenmfg.com
INSTALLATION GUIDE & OPERATION MANUAL
FOR ASPEN R410A MULTI-POSITION AIR HANDLERS
CONTENT
1.
Important Safety Instructions
2.
Introduction & General Information
3.
Inspection
4.
Installation Instructions and Clearances
5.
Installation
6.
Connecting Refrigerant Lines
7.
Metering Devices / Liquid Line Connection
8.
9.
11.
IO-A1-004-REVA | AAM-AEM-LAM-LEM
1

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Summary of Contents for Aspen LAM Series

  • Page 1: Table Of Contents

    INSTALLATION GUIDE & OPERATION MANUAL FOR ASPEN R410A MULTI-POSITION AIR HANDLERS REFRIGERANT CONTENT Important Safety Instructions Introduction & General Information SERIES Inspection Installation Instructions and Clearances Multi-Position, Installation DRAFT Electric Heat Connecting Refrigerant Lines Copper Coil Air Metering Devices / Liquid Line Connection...

  • Page 2: Important Safety Instruction

    Section 5 of this manual under “INSTALLATION 208/240 V, single phase, 60 Hz power supply. Aspen will not be responsible for damages INSTRUCTIONS AND CLEARANCES”,the equipment was caused due to modification of the unit to operate with alternative tested for 0”...
  • Page 3 • A wiring diagram with clear indication of the connections Controls are accessible from the front for easy service. to external control devices and supply cord can be found Electrical connections can be made from the top or left. in Section 16 of this manual. Disconnect does not protrude through the wall panel.
  • Page 4 Aspen will NOT be responsible for any damages ing operation. When applied in conjunction with summer resulting from failure to follow these instructions.
  • Page 5 FIGURE 5.1B distributor for exchange. 5.1.1. HORIZONTAL LEFT-HAND DISCHARGE CONVERSION Some Aspen coils may include a Schrader CAUTION valve on the suction manifold. Ensure that the Schrader valve and valve core (where present) are protected from heat during brazing and installation to prevent leakage.

  • Page 6: Connecting Refrigerant Lines

    1. Unscrew and open the access panels – upper (1), 4. Add Block Off Plate (9) on coil assembly (5). lower (2) and filter cover (3). Pull-out the filter (4), coil assembly (5) and discard horizontal pan (6) then unscrew the coil deck (7) and filter rail (8) on both sides of the cabinet before pulling out as shown in figure below.
  • Page 7 CONNECTION FIGURE 6.1 6.2. Cut off the liquid Aspen coils are available with two kinds of metering devices line connection from the a) flowrater / fixed orifice, or b) TXV. The following instructions coil. Use a tubing cutter for this step. Clean the are separated into sections by metering device.
  • Page 8 Use Piston sizes recommended by the outdoor unit manufacturer whenever CAUTION possible. The piston should be sized FIGURE 7.6 according to the capacity of the outdoor unit. Failure to install the proper piston can lead During some installations, a piston change may be required. WARNING to poor system performance and possible If so, the installer MUST change the piston.
  • Page 9 Be aware of the Teflon O-ring. Be sure to BULB POSITION AT 2 O’CLOCK OR 10 O’CLOCK replace the O-ring to attain a proper seal. CAUTION (The Teflon O-ring is located between the two halves of the flowrater). II-8. Tighten the nut to a torque of approximately 10 ft-lbs. Do NOT over-tighten the nut.

  • Page 10: Leak Check / Standing Pressure Test / Vacuum Test

    III-11. Remove the valve identification sticker from the valve and place it adjacent to the Aspen model number on unit When installing an expansion valve, it is not necessary to slide the coil out of the housing.

  • Page 11: Vacuum Test

    ed for simultaneous operation of electric heat and reverse 8.2 VACUUM TEST cycle heating. Refer to the top part of wiring diagram at the Important: Do not open the service valves until the end of this guide for detailed information. Refer to section refrigerant lines and indoor coil leak check and evacuation 13 for Electric Heat Kit applications.

  • Page 12: Air Volume Adjustment

    The blower motor has selectable speed taps la- wiring in Section 15). beled 1 through 5 (Fig. 12.2). The speed taps are The Y wire from the thermostat is not connected at the air energized by 24 volts received from the time delay handler.

  • Page 13: System Charging

    TABLE 11.2C - AAM AIRFLOW TABLE - STANDARD EFFICIENCY TABLE 11.2b – LEM Airflow Table C F M V. E X T E R N A L S TAT I C SPEED CFM VS EXTERNAL STATIC MODEL SPEED TA P MODEL 18/19/24/25 1030...

  • Page 14: Electric Heat

    5. If outdoor unit instructions and charts are not other accessory heat kit besides stated in Table 13.1a, 13.1b available, use Aspen provided charts. Make certain and 13.1c may be installed in these air handlers. Not intended indoor air temperature is near comfort level set point for simultaneous operation of electric heat and reverse cycle heating.

  • Page 15: Final System Checkout

    15.2 TWO-STAGE AC SYSTEM WIRING TABLE 14.1C AAM ELECTRIC HEAT KITS (STANDARD EFFICIENCY) MODEL MODEL HEAT KIT SPEED TAP MIN. CFM REQUIRED F/ EHK FIGURE 15.2 E(C,T)S03 E(C,T)S05 18/19/ E(C,T)S06 24/25 24/25 E(C,T)S08 E(C,T)S10 E(C,T)M03 1102 E(C,T)M05 1102 E(C,T)M06 1102 26/30/ 30/31/ 31/32/...

  • Page 16: Wiring Diagrams

    WIRING DIAGRAMS DRAFT FIGURE 15.5 - PSC MOTOR NOTE: Wiring Diagram is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. NOT FOR RELEASE FIGURE 15.6 - ECM MOTOR NOTE: Wiring Diagram is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring. IO-A1-004-REVA | AAM-AEM-LAM-LEM...
  • Page 17 Aspen’s website DRAFT NOT FOR RELEASE 373 Atascocita Rd., Humble, TX 77396 Phone: 281.441.6500 Toll Free: 800.423.9007 Fax: 281.441.6510 www.aspenmfg.com Revised 06/2025. Subject to change without notice and without incurring obligation. © 2025 Aspen Manufacturing. All Rights Reserved IO-A1-004-REVA | AAM-AEM-LAM-LEM...

This manual is also suitable for:

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