L.B. White 170 Tradesman Portable Forced Air - Manual (Page 8)

Assemble handle to four holes at barrel top as shown
in Fig.1. Tighten screws securely. FIG. 1
HANDLE ASSEMBLY
8
The vaporization of propane is affected by several factors:
the sur face area of the container, the liquid level of
propane, temperature surrounding the container, and the
relative humidity. All of these factors are specific to a site.
Therefore, a degree of experience and judgement is
required to select the proper propane supply.
Although experience is the best guide, the following recommendations can be used as a starting point. The
table is based on experience during winter in northern
climates. If more or less favorable conditions prevail at a
specific site, adjustments can be made on the basis of
experience.
PROPANE GAS SUPPLY SIZING
Recommended Propane Gas Supply
Average Temp ºF 50 40 30 20 10 0 -10
Number of 100lb. 2 2 3 3 3 3 3
Gas Cylinders to
Use Per Heater
* Cylinders must be manifolded together to allow simultaneous vapor withdrawal from all cylinders.
12 Make sure the heater has the proper gas regulator for
the application. A regulator must be connected to the
gas supply so that gas pressure at the inlet to the gas
valve is regulated within the range specified on the
dataplate at all times. Contact your gas supplier, or
the L.B. White Co., Inc. if you have any questions.
13. This heater is configured for use for propane gas
vapor withdrawal only. Do not use the heater in an
propane gas liquid withdrawal system or application.
If you are in doubt, contact the L.B. White Co., Inc.
14. The heater must be installed so as not to interfere
with or obstruct normal exits, emergency exits, doors
and walkways.
15. Railing, fencing or suitable substitute materials must
be used to keep the heating equipment from any
people using and visiting the structure.
16. Eventually, like all electrical/mechanical devices, the
thermostat can fail. Thermostat failure may result in
an underheating condition. The thermostat should be
tested to make sure it turns the heater on and off
within a temperature differential of ±3°F.
17. Take time to understand how to operate and maintain
the heater by using this Owner’s Manual. Make sure
you know how to shut off the gas supply to the
building and also to the individual heater. Contact
your fuel gas supplier if you have any questions.
18. Any defects found in performing any of the service or
maintenance procedures must be eliminated and
defective parts replaced immediately. The heater
must be retested by properly qualified ser vice
personnel before placing the heater back into use.