66389-BIM-C-1208
Johnson Controls Unitary Products
23
2.
The proper pressure regulation. (Two-stage regulation is
recommended).
3.
The pressure drop in the lines between regulators and
between the second stage regulator and the appliance.
Pipe size required will depend on the length of the pipe
run and the total load of all appliances.
Complete information regarding tank sizing for vaporization,
recommended regulator settings, and pipe sizing is available
from most regulator manufacturers and LP gas suppliers.
LP gas is an excellent solvent and will quickly dissolve white
lead and most standard commercial compounds. A special
pipe dope must be used when assembling wrought iron or
steel pipe for LP. Shellac base compounds such as Gaskolac
or Stalastic, and compounds such as Rectorseal #5, Clyde’s,
or John Crane may be used.
Check all connections for leaks when piping is completed
using a soap solution.
NEVER USE A FLAME
.
VENT AND COMBUSTION AIR
Venting slots in the heating compartment access panel
remove the need for a combustion air hood. The gas heat
flue exhaust is routed through factory installed exhaust piping
with screen. If necessary, a flue exhaust extension may be
installed at the point of installation.
FACTORY INSTALLED OPTIONS/
FIELD INSTALLED ACCESSORIES
ELECTRIC HEAT
Electric heaters are available as field installed accessories.
Refer to electric heat instructions for installation. These heat-
ers mount in the heat compartment with the heating elements
extending into the supply air chamber. All electric heaters are
fused and intended for use with single point power supply.
MOTORIZED OUTDOOR DAMPER
The Motorized Outdoor Damper can be a factory installed
option or a field installed accessory. If factory installed, refer
to the instructions included with the outdoor air hood to com-
plete the assembly. Field installed Motorized Outdoor Damp-
ers accessories include complete instructions for installation.
ECONOMIZER
The Economizer can be a factory installed option or a field
installed accessory. If factory installed, refer to the instruc-
tions included with the outdoor air hood to complete the
assembly. Field installed Economizer accessories include
complete instructions for installation.
There are two Economizer options:
1.
Down Flow application with barometric relief hood stan-
dard.
2.
Horizontal Flow application that requires the purchase of
a barometric relief hood.
POWER EXHAUST
The Power Exhaust can be a factory installed option or a field
installed accessory. If factory installed, refer to the instruc-
tions included with the outdoor air hood to complete the
assembly. Field installed Power Exhaust accessories include
complete instructions for installation.
The Power Exhaust factory installed option is for Down Flow
application only.
There are two field installed Power Exhaust accessories:
1.
Down Flow application.
2.
Horizontal Flow application that requires the purchase of
a barometric relief hood.
RAIN HOOD
The following procedure should be used when assembling a
rain hood onto a unit.
All of the hood components, including the filters, the gasket-
ing and the hardware for assembling, are packaged and
located between the condenser coil section and the main unit
cabinet, if the unit has factory installed options. If field
installed accessories are being installed all parts necessary
for the installation comes in the accessory.
1.
Remove the hood components, filters, gasketing and the
hardware from the box.
2.
Follow the instructions included with the hood to com-
plete the installation.
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warning exactly could
result in serious injury, death or property damage.
Never test for gas leaks with an open flame. use a
commercially available soap solution made specifi-
cally for the detection of leaks to check all connec-
tions. A fire or explosion may result causing property
damage, personal injury or loss of life.
