Engineered air DG series Manual de usuario descargar pdf (Pagina 16)

A SH / S-TRAC MANUAL

16 of 29 Feb 06

SORB DISTRIBUTION GRID INSTALLATION

The distribution grid is built for specific duct dimensions and air flow. Do not install the grid into any other

duct or system than it was designed for.

The duct mounting location should be in a straight length of duct and shall not be near any transitions or

elbows which could affect airflow across the grid. Do not install the grid near the outlet of a blower or

locations with high velocities. Maximum operating duct static pressure is 2.5 “w.c. (620 Pa). Higher duct

static pressures are possible, but must be indicated prior to ordering the humidifier and steam grid.

Absorption Distance

When steam first leaves the SORB distribution grid it is a hot invisible gas. As it travels into the air stream,

the steam cools and condenses into fog. The fog then evaporates into the large volume of supply air. A

very slight increase in duct air temperature will occur.

The standard duct installation absorption distance is 36” (914), beginning 8” (203) upstream of the grid.

Grid Orientation

Refer to the SORB distribution grid drawing included with the submittal records.

Duct Installations

If the duct is insulated on the inside it must be encased within a solid duct liner, and incorporate a drain

pan with a properly sized drain trap. The liner and drain pan must extend at least the length of the

absorption distance. Refer to the SORB distribution grid installation drawing included in the submittal

package.

Duct mounted grids are equipped with stainless steel adjustable mounting brackets.

Duct Mounted controls

The humidity high limit must be mounted near the top of the duct, 3 – 10ft (1 – 3m) downstream from the

distribution grid. This control is typically set between 80 and 85%RH.

An air proving device is required on all applications, and is normally located at the supply fan feeding the

duct and distribution grid.

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Engineered air DG series Manual de usuario Pagina 16