Operating instructions

Page 4
PROPANE FUEL INFORMATION
SIZE AND CAPACITY OF PROPANE
The chart below shows the approximate number of
cylinders required for this heater. To use the chart:
1.Select the lowest air temperature expected (at the
bottom of the chart).
2.Move straight up to time of operation desired (left side of
chart).
3.Read the number of cylinders required. Rather than
using several 100-lb. cylinders, it may be preferable to
use a larger container installed outside (consult your
propane supplier).
NOTE: The chart applied only when you have:
* Full cylinders, 100-lbs. capacity
* Good air circulation
* No frost on cylinders (Note: If frost accumulates on
cylinders, divide maximum operating time on chart by 3.)
WARNING:
Local codes for installation of propane systems may vary
considerably. Therefore, ask your local propane supplier for
advice on propane system installation in your particular
area. In the absence of local codes, install in accordance
with American National Standards Institute (ANSI)/National
Fire Protection Association (NFPA) publication.
Standard for the Storage and Handling of Liquefied
Petroleum Gases ANSI/NFPA 58-1998. Your supplier, fire
marshal or library should have a copy.
The propane supply system must be arranged for vapor
withdrawal. Propane cylinders must be secured in the
upright position to keep them from falling or being knocked
over.
GENERAL INFORMATION
During use, liquid propane in a container vaporizes. As it
vaporizes, the propane cools itself. If this cooling process
continues long enough and proceeds fast enough, the
propane temperature and pressure will fall so low that
heater operation may be improper or even impossible even
though plenty of propane remains in the container. Often
frost forms on the outside of the propane container as a
warning of excessive refrigeration.
Recommendations to reduce the ill effects of refrigeration
are:
* Provide considerably more propane than you plan to
consume. As a rule of thumb, provide twice as much.
* Fill containers frequently, especially in cold weather.
* Never allow propane to fall below one-third of container
capacity.
* If possible, keep containers in a warm area. Under no
circumstances should the heater exhaust be directed
toward the propane cylinder.
* If particularly cold weather is expected, install a
vaporizer (consult your propane supplier).
* Watch for and avoid frost formation on containers. If it
occurs, discontinue use of the heater and refill
container.
ANSI Z83.7b-1993/CGA 2.14-1972
Construction Heater
P/N 7289G
SEPTEMBER 2000