AT VDC Series
Installation and
Maintenance Manual
VoltAire Systems, LLC
Specifications are subject to change without notice
Page 3 of 17
VoltAire Doc. # CA2919D
Published: December 9, 2020
1. IMPORTANT INFORMATION TO REVIEW PRIOR TO INSTALLATION,
OPERATION AND MAINTENANCE
READ THE ENTIRE MANUAL PRIOR TO INSTALLING AND MAINTAINING the VoltAire Systems Air
Conditioners. Do not install or perform maintenance on the air conditioner if you do not understand all of the
instructions. Contact VoltAire Systems at (407) 378-7482 with any questions or concerns.
The air conditioner should be fully inspected on initial delivery. Open the packaging completely at the time of
initial delivery and verify there is nohidden or concealed damage. Shipping damage, including concealed
damage, is not covered under warranty.
WARNING: IMPROPER INSTALLATION AND OPERATION MAY CAUSE PROPERTY DAMAGE,
PERSONAL INJURY OR LOSS OF LIFE. The air conditioner shall only be installed and serviced by a certified
professional in strict accordance with the requirements within this manual, in accordance with all
local/state/federal codes, and per industry standards. Remove power from the unit during maintenance and
installation, as line voltage may be dangerous, hazardous and lethal.
In the event of a conflict, code requirements shalltake precedence over the instructions provided within this
manual. The installer shall be aware of all code requirements and shall comply fully.
Use care when transporting and lifting the air conditioner. The unit should be maintained in the upright
position at all times. If the unit has been mistakenly laid on its side stand the unit up and wait at least 24 hours
before applying power.
WARNING: WEAR PROPER PERSONAL PROTECTION EQUIPMENT, INCLUDING BUT NOT LIMITED TO
SAFETY GLASSES, GOGGLES, AND GLOVES. EDGES MAY BE SHARP.
A field provided time delay fuse or breaker must be provided by the installer with the power supply circuit
serving the air conditioner. The installer shall size this fuse / breaker and wirein accordance with all applicable
codes. Verify wire terminals and voltage prior to plugging into the Air Conditioner, otherwise you may damage
the electrical components.
IMPORTANT NOTE: Valve service ports are provided with rubber gasketed caps that are used to fully seal the
service ports. If the caps are removed for service, they must be put back following service to prevent any
potential leakage through the valves.
These instructions should be retained by the owner and/or with the unit.
WARNING: This unit is to be supplied with 48VDC Voltage (+20%/-15%); The 48VDC board includes nominal
54V diodes for protection of voltage over 54V, up to approximately 57V. If the installer or user anticipates
voltage spikes in excess of 47V, VoltAire highly recommends that a voltage protection device be provided with
the 48VDC power supply to prevent unit failure, damage, and/or personal injury or loss of life.
WARNING: For Negative (-) 48VDC power supply carefully follow the instructions within this manual as unit
damage due to improper polarity is not covered under warranty. Do not rely upon wire color for polarity.
