L.B. White 350 Premier Dual Fuel - Manual (Page 8)

10. This heater is configured for use for L.P. gas vapor
withdrawal. Do not use the heater in an L.P. gas
liquid withdrawal system or application. If you are in
doubt, contact the L.B. White Co., Inc.
11. The heater must be installed so as not to interfere
with or obstruct normal exits, emergency exits, doors
and walkways.
12. Railing, fencing or suitable substitute materials must
be used to keep the heating equipment from any
people using and visiting the structure.
13. The heater shall be located so that rain, ice, or snow
drainage from the structure does not af fect
equipment operation. If the heater is mounted
outside, it must be mounted above any pooled or
standing water. If the unit is to be located on the
ground, a surrounding trench is recommended to
drain any rain, ice or snow away from the unit.
4. The ground and surrounding terrain must be cleared
of any combustible vegetation and other combustible
materials when the heater is utilized outside.
15. 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.
16. 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.
17. 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 service
personnel before placing the heater back into use.
8
GAS SUPPLY SIZING
The vaporization of propane is affected by several factors:
the surface 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 in northern climates where
cold weather and high humidity are prevalent in the winter.
If more or less favorable conditions prevail at a specific site,
adjustments can be made on the basis of experience.
R Reeccoom mm meennddeedd G Gaass S Suuppppllyy::
Propane Supply Tank: Heater(s)/Container:
500 gallon 1
1,000 gallon 2
If more than one gas supply container is used per heater,
the containers must be manifolded together to allow vapor
withdrawal simultaneously from multiple containers.
Manifold system shall be in accordance with NFPA 58.
1. Thread swivel to connector at gas inlet of heater. See
Fig. 1. Tighten securely.
2. The hose may be coiled up and hung on the hose
hanger, with the regulator stored within the regulator
storage bracket.
FIG. 1
CONNECTING HOSE TO HEATER
SWIVEL