Bryant UNIT 379H User Manual

Installation instructions, Fi l, 379h

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Installation Instructions

379H

Size 450

180R & 240R

Series D

OUTDOOR HEATING AND COOLING UNIT / bPliant

I

39379D35

1/3/72

The Bryant Model 4dO-379H is a heating unit designed
for outdoor installation; either rooftop or at ground
level. It is available with either of two factory-in­
stalled direct expansion coils (Model 180R- or 240R-

379) or with no expansion coil as Model 450-379H.
Model 180R units are equipped for use with R22

refrigerant and provide 180,000-Btuh cooling when

connected with a Bryant Model 180-566 Condensing
Unit. Model 240R units are equipped for use with
R500 refrigerant and provide 240,000-Btuh cooling

when connected with a Bryant Model 240-566 Con­

densing Unit. All tluree models have a heating input of

450.000 Btuh (approximately) for both natural and
propane gas. They are equipped with a two-stage
firing arrangement for operation at a reduced input of
225.000 Btuh.

.! ,Fi L

DO NOT!

IREMOVE

Important-Read Before Installing

Be sure the available gas supply is the same as that
shown on the American Gas Association (A.G.A.)

rating plate. Check the electrical supply to be sure
that voltage, frequency, and phase correspond to that
specified on the unit rating plate.

Check all national, state, and local building codes af­

fecting the installation of this unit. Check all local or­
dinances that could affect the installation of this type

equipment.

WARNING: All access panels must be in place at all
times when unit is in operation.

GENERAL

The design of the unit is certified by the American
Gas Association (A.G.A.) for use with iiatural or pro­
pane gas with the appropriate controls and orifices.

The units are designed specifically for outdoor in­
stallation, either at rooftop or ground level.

Installation of the unit consists of the following:

I. Locating the Unit

II. Gas Piping

III. Duct Connection

IV. Venting

V. Coil Connection (Models 180R- and

240R-379H)

VI. Electrical Connections

VII. Start-up and Adjustments

VIII. Maintenance

Figure 1

SECTION I. LOCATING THE UNIT

Extreme caution should be observed to prevent dam­
age when moving the unit. Maintain the unit in an up­

right position at all times during rigging and moving

operations. To facilitate lifting and moving opera­

tions, place the unit in an adequate rope or ca­
ble sling.

CAUTION: Protect the top and sides of the unit from

possible damage from rigging sling.

Rooftop Installation

Level the unit on a base situated a minimum of 6 in­
ches above the roof to insure proper drainage. Consult

local and state building codes for installation require­
ments. Be assured the roof construction will support

the weight of the equipment.

Ground Level Installation

The unit should be placed on a level concrete slab (4-
inch minimum thickness); level the unit on the slab
with 1-inch clearance to insure proper drainage.

Combustible Clearances

Minimum clearances are: 6 inches from rear or duct
side, 24 inches on all other sides, and 0 inch on the
bottom. These clearances permit the use of combus­
tible materials for supports. The top of the unit must

be kept clear at all times.

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