Installing The Ductwork And Grilles; Duct Collars; Location Of Supply And Return Grilles - Wine Guardian WGS40 Installation, Operation And Maintenance Manual

Installing the Ductwork and Grilles

Duct Collars

One inlet duct collar and one evaporator outlet are supplied with each fan coil unit as standard
equipment from the factory. The duct collars are removable. The return air, or inlet duct collar
must connect to the return air outlet from the wine cellar. Any of the five supply air outlets on
the unit can be used for the ductwork to the supply grille(s) inside the wine cellar. The factory
installed supply duct collar can be relocated to any of the five openings as needed.
Use ductwork to connect the unit to the supply and return outlets in the wine cellar. Use only
insulated ductwork to minimize cooling loses, prevent sweating, and to reduce noise.
NOTE: Do not exceed a total of 25 feet for each length of ductwork run (supply
and return).
Table 2
Recommended Insulated Flexible Ductwork Sizing Chart for the
Evaporator (cooling) Coil
Model#
WGS40
WGS75
WGS100
WGS175
Avoid crimping the flexible ducts. This chokes down the inside area and reduces the airflow,
Be sure all ducts and surface in contact with the airflow are insulated
NOTE: Uninsulated ducts and surfaces cause bare exposed metal surfaces to
sweat, further degradation of the insulation and a loss of equipment cooling
capacity.

Location of Supply and Return Grilles

Locate supply and return grilles inside the cellar to create an airflow pattern that maximizes air
circulation in the room. Avoid short circulating of the air.
 Do not install the return air grilles directly on the floor as the grilles will collect dust
from the floor.
 Do not locate the supply or return air grille where there are blocked by bottles, boxes
or cases.
33
Outlet
(supply air)
Single
20
25
25
30
CAUTION
RISK OF DAMAGE TO EQUIPMENT
causing the unit to operate erratically.
and have a vapor barrier on the outside surface.
Outlet
(supply air)
Single
15
25
25
30
Inlet (Return Air)
Single
20
25
25
30