Bryant Outdoor Heating Unit 379A - Manual (Page 3)

NOTE: It is important that the unit be installed in a
level position.
Clearances
The rm'nimmn clearance is 6 inches from the duct
side, 24 inches on all other sides, and 0 inches on the
bottom. This permits the use of combustible materials
for supports.
CAUTION: When using rails, etc., as support, make
allowances for surface water drainage under the unit.
II. GAS PIPING
2. A separate gas supply line should be installed to
run directly from the meter to the furnace. Check your
local utility for recommendations concerning existing
lines. Choose a supply pipe sized large enough to keep
the pressure loss as low as practical.
CAUTION: Never use pipe smaller than the gas con­
nection to the furnace. Observe local codes for all gas
pipe installations.
The following are pertinent recommendations:
1. Avoid low spots in long runs of pipe. It is best to
grade all pipe 1/4 inch in every 15 feet to prevent
traps. All horizontal runs should grade downward to
risers. Risers should be used to coimect to the furnace
and to the meter.
2. Install a drip leg in the riser leading to the furnace.
This drip leg will serve as a trap for dirt and con­
densate. Drip legs should be installed where con­
densate will not freeze. (See Figure 3 for drip leg
location.)
3. A manual shutoff valve should be installed in the
gas supply pipe near the furnace where it can be
easily reached.
4. Place a ground joint union close to the unit be­
tween the gas controls manifold and the manual
shutoff valve.
5. Support all piping with appropriate hangers, etc.
The maximum distance between hangers should be 10
feet.
6. Joint compound (pipe dope) must be resistant to
the action of propane gas.
WARNING: Never use a match or other open flame
to check for gas leakage.
7. After all connections are made, check for leakage
by using soap-and-water solution (or in accordance
with local utility regulations).
III. DUCT CONNECTIONS
Before ductwork can be attached to the unit, remove
and discard the cover panel that is located over the
outlet and return air openings. The ductwork may be
screwed or bolted to the unit flange with suitable
gaskets to insure weathertight seal. Be sure that the
sheet metal overlaps the flange on the unit.
All ductwork external of the structure must be
properly insulated and waterproofed. All openings in
the structure must be properly flashed and vibration-
isolated in accordance with local codes and good
building practices. The supply and return ductwork
should be provided with an approved vibration
eliminator.
NOTE: The vibration eliminator must be located
within the structure.
NOTE: An external filter must be supplied and in­
stalled where easily accessible for service. For the
minimum filter area, see the: unit rating plate.
IV. VENTING
A vent cap assembly and a sheet metal angle (air
deflector) are packaged and shipped with the unit.
The package is located in the blower compartment.
DRIP LEG
WITHIN STRUCTURE
A70676
Figure 3—Drip Leg Location
— 3 — 39379D36