Bryant 379H User Manual
Installation Instructions
OUTDOOR HEATING AND COOLING UNIT / bPliant
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
I
379H
Size 450
180R & 240R
Series D
39379D35
1/3/72
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 (4inch 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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UNIT
SIZE
180R-379H
240R-379H
*Refer to condensing unit for compressor suction and liquid line sizes
CONNECTION
SIZE (COIL)
7/8 OD
(Suction)*
5/8 OD (Liquid)*
1-3/8 OD
(Suction)
5/8 OD (Liquid)
A B c
2 ea 6-3/16 14-13/16
2 ea
2 ea 7-3/16
2 ea
10-3/16
10-3/16
D
18-13/16
12-5/8
18-1/2
Approximate
Shipping Weights
450-379H—1425 lbs
180R-379H—1460 lbs
240R-379H—1565 lbs
^4
Figure 2-Dimensional Drawing
TABLE I- Ratings and Capacities
• Model 450-, 180R-, & 240R-379H
Heating Input, 1st Stage
Heating Output, 1st Stage
Heating Input, 1st & 2nd Stages Btuh
Heating Output, 1st & 2nd Stages Btuh
Approved Temp Rise
CFM 0.5 inch wc S.P.
Blower Motor
Power Supply
Full Load Current
Locked Rotor Current
Speed
Frame Size 56
Branch Circuit Wire Size Min*
Branch Circuit Fuse Size Max
Filters Size
Btuh 225,000
Btuh 168,000
°F 20-75
HP
208-60-3 230-60-3
Amps 8.4 8.4
Amps
RPM
AWG No. 14 14
Amps 25 25
58.2 53.0
(450-379H) (6) 16x25x1
(180R & 240R) (3) 16x25x1
A69420
450,000
337,000
6,000
3
3450
(3) 20x25x1
*If alumimun conductors are to be used, the connections must be made in accordance with the National Electric Code. The
wire size selected must have a current capacity not less than that of the copper wire specified and must not create a voltage
drop between the service panel and the unit in excess of 2% of the unit rated voltage.
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