2
Marvair Classic AVHA Heat Pump I&O Manual
08/2018 Rev. 2
How To Use This Manual
This manual is intended to be a comprehensive guide to the installation of the Marvair
®
Classic family of
vertical packaged heat pumps. It contains installation, troubleshooting, maintenance, warranty, and application
information. The information contained in this manual is to be used by the installer as a guide only. This manual
does not supersede or circumvent any applicable national or local codes. For information on the efficiency,
cooling and heating performance, please refer to the Classic Product Data Sheets. The most current version
of all literature can be found on our website at www.Marvair.com.
If you are installing the heat pump unit, first read Chapter 1 and scan the entire manual before beginning the
installation as described in Chapter 2. Chapter 1 contains general, descriptive information and provides an
overview which can speed up the installation process and simplify troubleshooting.
If a malfunction occurs, follow this troubleshooting sequence:
1. Make sure you understand how the heat pump unit works (Chapters 1 & 3).
2. Identify and correct installation errors (Chapter 2).
3. Refer to the troubleshooting information in Chapter 4.
4. Identify defective part(s). (Chapter 5).
If you are still unable to correct the problem, contact the Factory at 1-800-841-7854 for additional assistance.
Please read the following “Important Safety Precautions” before beginning any work. Failure to follow
these rules may result in death, serious bodily harm, property damage and damage to the equipment.
Important Safety Precautions
1. USE CARE when LIFTING or TRANSPORTING equipment.
2. TRANSPORT the UNIT UPRIGHT. Laying it down on its side may cause oil to leave the compressor and
breakage or damage to other components.
3. TURN ELECTRICAL POWER OFF AT THE breaker or fuse box BEFORE installing or working on the
equipment. LINE VOLTAGES ARE HAZARDOUS or LETHAL.
4. OBSERVE and COMPLY with ALL applicable PLUMBING, ELECTRICAL, and BUILDING CODES and
ordinances.
5. SERVICE may be performed ONLY by QUALIFIED and EXPERIENCED PERSONS.
* Wear safety goggles when servicing the refrigeration circuit
* Beware of hot surfaces on refrigerant circuit components
* Beware of sharp edges on sheet metal components
* Use care when recovering or adding refrigerant
6.
Use COMMON SENSE - BE SAFETY-CONSCIOUS
This is the safety alert symbol . When you see this symbol on the unit and in the instruction manuals be
alert to the potential for personal injury. Understand the signal word DANGER, WARNING, CAUTION and
IMPORTANT. These words are used to identify levels of the seriousness of the hazard.
DANGER
Failure to comply will result in death or severe personal injury and/or property damage.
WARNING
Failure to comply could result in death or severe personal injury and/or property dam-
age.
CAUTION
Failure to comply could result in minor personal injury and/or property damage.
IMPORTANT
Used to point out helpful suggestions that will result in improved installation, reliability
or operation.
© 08/2018
Airxcel Commercial/Industrial Group
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE.
