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Aspen LGM Series Installation Manual & Operation Manual

Multi-position air handler - aluminum coil
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INSTALLATION GUIDE & OPERATION MANUAL
ASPEN R410a MULTI-POSITION AIR HANDLERS
LGM SERIES - MULTI-POSITION AIR HANDLER -
ALUMINUM COIL
CONTENT
1.
Important Safety Instructions
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
System Charging
13.
Final System Checkout
14.
Wiring Diagrams
1.
IMPORTANT SAFETY INSTRUCTION
Potential safety hazards are alerted using the following symbols.
The symbol is used in conjunction with terms that indicate the
intensity of the hazard. It is the responsibility of the owner and the
installer to read and comply with the safety information and the
instructions accompanying these symbols.
Read the precautions in this manual carefully
before operating the unit.
Read the instructions in this manual carefully
before operating the unit.
Read the instructions in this manual carefully
before servicing the unit.
Read the instructions in this manual carefully
before wiring the unit.
Warning or Caution
This symbol indicates a potentially hazardous situation,
which if not avoided, could result in serious injury, property
damage, product damage or death.
This symbol indicates a potentially hazardous situation,
which if not avoided, may result in moderate injury or
property damage.
Certified technicians or those individuals meeting the
requirements specified by NATE may use this information.
Property and product damage or personal injury hazard may
occur without such background.
This appliance is not intended for use by persons (including
children) with reduced physical, sensory, or mental
capabilities, 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 must be supervised to ensure that they do
not play with the appliance.
Product designed and manufactured to permit installation
in accordance with local and national building codes. It is
the installer's responsibility to ensure that the product is
installed in strict compliance with the aforementioned
codes. Manufacturer assumes no responsibility for damage
(personal, product or property) caused due to installations
violating regulations.
This unit is not approved for outdoor installations.
1
CAUTION
WARNING
WARNING
IO-A1-007 | rev2

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Summary of Contents for Aspen LGM Series

  • Page 1: Table Of Contents

    ASPEN R410a MULTI-POSITION AIR HANDLERS instructions accompanying these symbols. LGM SERIES – MULTI-POSITION AIR HANDLER - Read the precautions in this manual carefully before operating the unit. ALUMINUM COIL Read the instructions in this manual carefully before operating the unit.

  • Page 2: Hazardous Voltage

    The unit is designed for operation with 120 V, single phase, • 60 Hz power supply. Aspen will not be responsible for This appliance shall be installed in accordance with national damages caused due to modification of the unit to operate wiring regulations.

  • Page 3: Inspection

    As expressed in our product warranty; ASPEN WILL NOT BE BILLED FOR ANY STRUCTURAL DAMAGES CAUSE BY FAILURE TO INSTALLATION INSTRUCTIONS AND CLEARANCES FOLLOW THIS INSTALLATION REQUIREMENT.

  • Page 4: Installation

    Failure to do so will result in condensate to the coil and hinder the performance of the system. overflow from the drain pan. Aspen will NOT be responsible for any damages resulting from failure to follow these instructions.
  • Page 5 grommets prior to brazing by sliding over the lines. Use a quenching cloth or allow the lines to cool before reinstalling the grommets. 1. Remove all access panels. ü Use of wet rags/quenching cloth is highly recommended to prevent weld-related damages to the casing and Schrader valve (if present).

  • Page 6: Connecting Refrigerant Lines

    Rotate the unit 180° as shown in the figure Re-install the coil deck (7), filter rail (8) and filter (4) as shown in figure below. 5.2. Connecting Ducting 5.2.1. Secure supply air ducting to the top of the air handler. Canvas connectors are recommended for reducing potential noise transmission.

  • Page 7: Metering Devices / Liquid Line Connection

    Fig 6.10 METERING DEVICES / LIQUID LINE CONNECTION Aspen coils are available with two kinds of metering devices a) Fig 6.2 flowrater / fixed orifice, or b) TXV. The following instructions are 6.3.
  • Page 8 7.1 Flowrater / Piston or Fixed Orifice Fig 7.4 I-3. Slide the attachment nut onto the liquid line stub out. I-4. Braze the stub-out portion to the liquid line and let cool. Fig 7.1 Flowrater assembly components CAUTION O-ring Use Piston sizes recommended by the outdoor unit manufacturer whenever possible.
  • Page 9 II-3. After ensuring that the II-8. Tighten the nut to a torque of approximately 10 ft-lbs. Do NOT coil is free of any residual overtighten the nut. Overtightening could crack the nut and/or pressure, disassemble the impede the piston movement during operation. flowrater body completely using two wrenches.
  • Page 10 CAUTION If the TXV sensing bulb is mounted vertically; the capillary MUST be directed upwards. The bulb must be mounted on the wall opposite to that being directly hit by the refrigerant and oil leaving the distributor tubes. III. Field-Installed TXV Retrofit Note: Photos are for basic illustration purposes only.

  • Page 11: Leak Check / Standing Pressure Test / Vacuum Test

    If any leaks are discovered, remove nitrogen pressure and III-11. Remove the valve identification sticker from the valve repair leaks. Repeat steps 1-3. and place it adjacent to the Aspen model number on unit name plate. 8.2. Vacuum Test III-12a. Some Aspen coils come with a Schrader valve on the suction line.

  • Page 12: Electrical Line Voltage Wiring

    Wiring diagram, Fig. 14.1. To air leakage, charge. seal the wiring entry point at the outside of the unit. The LGM Series uses a constant torque ECM Motor. This motor will NOTICE try to maintain proper motor torque to achieve programmed air All wiring must comply with local and national electrical volume levels at varying levels of external static pressure.
  • Page 13 Use a Magnehelic Gauge with a 1” scale and two static pressure TABLE 11.2a – LGM Airflow Table – High Efficiency tips to measure the static pressure during the air volume adjustment procedure (Fig. 11.1). The high port static pressure tip should be placed in the supply duct near the outlet of the air handler.

  • Page 14: System Charging

    • 12.2. Fixed Orifice / Piston - Flowrator Coils Airflow data shown is from testing performed at 120 Volts LGM units are equipped with a standard ECM constant torque Add refrigerant until the superheat measured at the outdoor unit motor. •...
  • Page 15 Figure 14.1 – ECM Motor 373 Atascocita Rd., Humble, TX 77396 • Phone: 281.441.6500 • Toll Free: 800.423.9007 • Fax: 282.441.6510 www.aspenmfg.com Subject to change without notice and without incurring obligation. © Copyright 2024 Aspen Manufacturing. All Rights Reserved IO-A1-007 | rev2...

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