UltimateAir 200DX, Manual & Installation Manual

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The UltimateAir® RecoupAerator® 200DX Manual and Installation Guide, March 2014
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General Duct Design Guidelines
1. Use a minimum of six-inch-diameter round duct or equivalent for all
connections to and from the RecoupAerator. Use of eight-inch ducts on
main trunks is recommended, especially for ducts running to the
outside. A licensed HVAC contractor should do the duct design
calculations.
2. To minimize backpressure: Make the intake and exhaust duct runs as
short and straight as possible. Always use 45-degree elbows instead of
90-degree where practical. Where flex duct is used, make sure that no
“crimping” or “collapsing” of the duct occurs. Stretch flex duct evenly
to avoid air restriction. Use “Y” connections instead of “T” connections
wherever possible.
3. Position outdoor fresh air intakes away from known sources of
pollution such as dryer vents, chimneys, and automobile exhaust.
Locate fresh air intake and stale air exhaust at least six to ten feet
apart, 40 inches from the corner of the building, and above the
projected snow plane (above 18 inches if possible).
4. Position inside grill/register vents so that fresh air does not blow
directly onto occupants or the thermostat.
5. Fasten joints between duct components with screws, sealant, and/or
rivets and wrap them with metal foil duct tape to ensure no leaks.
6. Minimize any noise transmission through the ducts by using a short run
(2-3 ft) of insulated flex duct on duct trunks coming from the unit and
going to the inside of the house. If this isn’t enough, you can install an
optional duct muffler.
7. If you install a RecoupAerator in an unconditioned space (not
recommended), you must insulate the section(s) of the inside ducts,
and possibly the unit itself, which are exposed to an unconditioned
environment.
8. Ensure that ducting to the outdoors is installed above anticipated snow
and flood lines, and is fitted with screened weather caps to prevent
animal, insect, and debris entry.
Final duct system should exhibit less than 0.6 in. wg total external static
pressure at maximum airflow. Lowering the static pressure will lessen the
electrical usage.