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Marvair AVPA12-20-24-30-36-42-48-60 User Manual

Marvair AVPA12-20-24-30-36-42-48-60
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ModPac PDS 1/2013 Rev. 10
1
General Description
The Marvair
®
ModPac™ II air conditioner
is a vertical, wall mounted, cost effective air
conditioner designed for a variety of building types
and applications. The unit is manufactured in eight
sizes from 1 to 5 tons. Electric heat may be field
or factory installed. Disconnects are standard on
all units including the 460v. models. Accessories
include a full range of grilles and thermostats.
Cabinet color choices include standard Marvair
beige and grey as well as other options. A Marvair
first, the built-in mounting flanges simplifies
installation. The sloped top, another Marvair
original, eliminates the need for a rainhood.
Outside Air for Ventilation or
Free Cooling
A full range of accessories and options allows
the ModPac air conditioners to be optimized for
each application. For classrooms, a complete
range of ventilation options are available to meet the fresh
air requirements of the ASHRAE 62 standard. To insure
proper operation and optimum performance, all outside
air ventilation packages are non-removable and factory
installed.
Dehumidification
The introduction of outside air can cause humidity levels
to rise to unacceptable levels. To reduce humidity, ModPac
air conditioners can be ordered with electric resistance reheat or a Hot Gas
Reheat (HGR) coil. The HGR coil allows the air conditioner to dehumidify without
adversely lowering the temperature in the classroom and uses less energy than
electric reheat. See page 4 for a detailed description of the operation of the Hot
Gas Reheat Coil.
Safety Listed & Energy Certified
All ModPac air conditioners are built to UL standard 1995, 2nd edition and
CAN/CSA C22, No. 236-5, 2nd edition. For energy efficiency and performance,
the units are tested and rated in accordance to the ANSI/ARI (Air-Conditioning
and Refrigeration Institute) Standard 390- 2003 (Single Package Vertical Units).
All AVPA units meet or exceed the efficiency requirements of ANSI/ASHRAE/
IESNA 90.1.2007. The ModPac air conditioners are commercial units and are not
intended for use in residential applications.
Mo d Pac™ II 1 to 5-Ton Vertical
Wall Mount Air Conditioners
Models AVPA12-20-24-30-36-42-48-60
ModPac II PDS 1/2013 rev. 10
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Marvair AVPA12-20-24-30-36-42-48-60 Specifications

General IconGeneral
BrandMarvair
ModelAVPA12-20-24-30-36-42-48-60
CategoryAir Conditioner
LanguageEnglish

Summary

General Description and Features

General Description of ModPac II

Overview of the ModPac II air conditioner, its features, sizes, and installation benefits.

Outside Air for Ventilation

Details on how ModPac units optimize for fresh air requirements and classroom ventilation.

Dehumidification Options

Explanation of dehumidification options like electric reheat or Hot Gas Reheat (HGR) coils.

Safety and Energy Certification

Information on UL/CSA standards and energy efficiency ratings like ANSI/ASHRAE/IESNA 90.1.

Standard Features and Operational Modes

Key Standard Features

Highlights ease of installation, attractive design, quiet operation, and serviceability.

M5 Configuration Details

Explains the PC board, LED indicator lights, and modes of operation for the M5 configuration.

LED Indicator Lights

Table detailing the meaning of Green and Red LED indicator lights for status and faults.

Unit Operational Modes

Describes Normal Start-up, Lockout Mode, and Delay on Make features for unit operation.

Accessories and Options

Grilles Selection

List of available aluminum grilles for different AVPA models with sizes and part numbers.

Thermostat Options

Details on various thermostat options, including programmable and non-programmable digital models.

Thermostat Guard

Information about a guard for specific thermostat models.

Humidity Control

Description of a controller for dehumidification/humidification and ventilation functions.

Color Choices

Standard beige color option with availability of grey, white, and light brown.

Ventilation and Model Configuration

Outside Air Ventilation Packages

Details on ventilation packages (B, Z, Y, N) for meeting ASHRAE 62 requirements.

Model Identification Chart

Explains the coding system for identifying ModPac II models based on cooling, power, and options.

Dehumidification Configurations

Explains Hot Gas Reheat (HGR) and Electric Reheat for humidity control.

Hot Gas Reheat (HGR) Operation

Details on how HGR coils maintain indoor humidity levels by tempering mechanical cooling.

Dehumidification Operation and Accessories

Hot Gas Reheat Operation

Describes the operation of HGR when humidity rises above set point and temperature is satisfied.

Electric Reheat Operation

Explains how electric heat operates simultaneously with cooling for dehumidification.

Available Accessories

Lists accessories like Phase Monitor, Thermal Expansion Valve, and Security Cages.

Special Application Packages

Details on Coastal Environmental Package and Protective Coil Coatings for harsh environments.

Performance Ratings and Data

Certified Efficiency and Capacity Ratings

Presents cooling BTUH, EER, and rated airflow according to ANSI/AHRI standards.

Sensible Heat Ratio Data

Provides sensible heat ratio and sensible capacity data for AVPA units under specific conditions.

Cooling Performance by Temperature

Table showing cooling capacity (BTUH) at different outdoor temperatures for AVPA models.

Airflow vs. Static Pressure

Data relating airflow (CFM) to external static pressure for AVPA air conditioners.

Electrical Characteristics and Wiring

Motor Electrical Specifications

Detailed electrical specifications for compressor, outdoor fan, and indoor fan motors.

Electrical Ratings for Ventilation

Provides MCA and MFS ratings for AVPA units with different ventilation package options.

Electrical Ratings and Load Amps

Electrical Ratings for Reheat & Ventilation

Details MCA and MFS for units with Electric Reheat and specific ventilation configurations.

Unit Load Amps (Heating & Cooling)

Lists load amps for heating elements and total amps for heating/cooling, including motors.

Dimensional Data - AVPA12

AVPA12 Model Dimensions

Provides physical dimensions, mounting details, and filter size for the AVPA12 model.

Dimensional Data - AVPA20-24

AVPA20-24 Model Dimensions

Details physical dimensions, mounting, and filter specifications for AVPA20 and AVPA24 models.

Dimensional Data - AVPA30-36

AVPA30-36 Model Dimensions

Provides physical dimensions, mounting, and filter information for AVPA30 and AVPA36 models.

Dimensional Data - AVPA42-60

AVPA42-60 Model Dimensions

Contains physical dimensions, mounting details, and filter specifications for AVPA42 through AVPA60 models.

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