Bryant 451A - Manual

nstallation Instructions
GAS-FIRED AIR CONDITIONER
Installation of the Model 451 Gas Air Conditioning
Absorption unit consists of the following steps:
I. Locate and mount absorption unit.
II. Connect chilled water lines.
III. Electrical connections.
IV. Gas connections.
V. Charge system with water.
VI. Check-out and Operation.
VII. Adjust gas input.
VIII. Balance system.
IX. Purge Non-Condensibles.
Each of the above steps is discussed in detail in
this irtstructiofl. Read entire instruction before
starting installation.
Position unit and remove wooden shipping crate
base as shown in Figure 1.
1. Saw wood stringers as shown.
2. Remove unit access panels and remove 3 ship-
ing bolts from crate base.
3. Tilt one end of unit and remove half-section of
crate base; then reiiiove remaining section while
tilting the other end.
I. LOCATE AND MOUNT ABSORPTION UNIT
The absorption unit may be located at ground lével
or on the roof. Consult local codes for information
concerning proximity to property lines, height
above roof, obstructions, etc.
A. MOUNTING BASE
1. Use non-combustible materials.
2. Base should be large enough that unit will not
overhang.
3. A poured concrete slab, minimum 4" thick, is
recommended for ground installation.
4. On roof installations leave süfficieíit clearance
between unit base and roof top for proper air circu-
451
SERIES A
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5. A unit supported on concrete blocks will require
a block at each corner plus a fifth block under the
front, midway betweèn the front corner blocks.
B. CLEARANCES
See Figures 2 and 3 for typical locations.
1. Absorption unit should have a minimum clear­
ance of 2 feet on all sides from any adjacent ob­
struction.
2. Avoid locating the unit where hot condenser
discharge air can impinge on nearby obstructions
and mix with the inlet air supply. The condenser
air discharges upward at a small angle toward the
front of the unit. With the condenser facing the
wall the unit can be located at, or outside of the
, lation. plumb line from any over-hang.
EH 451 Cancels: New Effective 2/1/64,