Installation Instructions

Manifolds are installed where multiple runs are made from a common location in a

parallel arrangement. The manifold may be manufactured from a one piece, malleable

iron or brass casting, or a welded fabrication of steel subcomponents or an assembly

of approved, malleable iron tees and short nipples. Depending on the location and

available space, different mounting arrangements are permitted. A manifold may be

mounted on the surface of an interior wall, between open floor joists, in attic spaces,

crawl spaces, within a partition wall, or inside an enclosure. The installation of manifold

assemblies using a pounds-to-inches regulator must be in accordance with all local

codes, and the following guidelines:

1) Standard manifold - low to medium

pressure (14” w.c. or less)

(Drwg A)

2) Elevated pressure manifold - A manifold

assembly utilizing a pounds-to-inches

regulator shall be installed in an

accessible, ventilated location so that the

regulator can be inspected, maintained

and serviced if repair or replacement is

required. (Drwg B)

3) Behind access panel - For manifold systems

that use a pound s-to-inches regulator

installed behind an access panel, all tubing

penetrations in the cabinet must be sealed,

caulked or grommeted. The cabinet must be

ventilated through the panel/door and not into

a wall space.

4) Open face cabinets - Cabinets which

communicate with the normal room

environment, may be utilized without the

need for ventilation or penetration sealing

requirements.

4.6 Manifold Stations

(Drwg A)

(Drwg B)

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