Once you have determined the total heat requirement, you
can now calculate how many 47 KG cylinder(s) are needed
at the job. For all heating applications when extended
heater use is required, a minimum size of a 47 KG cylinder
is the smallest cylinder to be used.
The amount of vaporized L.P. gas available from the
cylinders will vary depending upon:
■
The amount of liquid propane in the cylinder(s).
■
The surrounding air temperature of the cylinder(s).
Since less gas is vaporized at lower temperatures, two or
more 47 KG cylinders may be needed in colder weather.
Your local propane gas dealer will help you select the proper
supply system.
The following table shows the minimum number of 47 KG
cylinders needed to run the heater.
Number of Cylinders Required
at Various Temperatures
Model
20º C. 15º C. 10º C.
5º C.
0º C.
-10º C.
TS080
1
1
1
1
2
2
TS170
2
2
2
2
3
3
The diagram at right shows “a supply time versus
temperature” comparison. It is based upon initial use of
full, 47 KG cylinders and a heat load of 29.3 KW at
continuous draw. Notice that one 47 KG cylinder may be
used for about 3 hours maximum operating time when at
16º C. But, as temperature drops, so does the amount of
time that the cylinder is capable of supplying the vapor
necessary to feed the heater. Looking at 0º C. scale, you
can see that a 47 KG cylinder is only capable of supplying
the full heat load for one hour.
REMINDER
■
The minimum cylinder size shall be 47 KG.
■
The minimum number of 47 KG cylinders used shall be:
TS080 - 1
TS170 - 2
■
The maximum number of cylinders used within the area
to be heated shall be three 47 KG.
■
Have your LP-gas supplier resize your installation from
cylinders to a larger capacity tank if requirements are
above three 47 KG cylinders capacity.
■
The sizing, delivery, set up, and refilling of all L.P. gas
supply containers must only be done by a qualified,
properly trained, L.P. gas installation person.
1. Multiply tent length x width x height = Cubic Meters
(A).
2. Multiply (A) x .133 x 35 = (B).
3. Subtract outdoor temperature from desired indoor
temperature = (C).
4. (B) x (C) ÷ 2 = Heat Requirements in Watts (D).
5. (D) ÷ 1,000 = Heat Requirements in KW.
EXAMPLE:
1. Tent Length (15 meters) x width (15 meters) x height
(4 meters) = 900 cubic meters (A).
2. 900 (A) x .133 x 35 = 4190 (B).
3. 20º C. (Desired Temperature) - 0º C. (Outdoor
Temperature) = 20º C. (C).
4. 4190 (B) x 20 (C) ÷ 2 = 41,900 Watts (D).
5. (D) 41,900 ÷ 1,000 = 41.9 KW.
Use one TS170 or two TS080 heaters.
HEATER SIZING GUIDELINES
CYLINDER SELECTION
Maximum Operating Time in Hour
s
20
15
10
5
0
-10
Lowest Air Temperature (º C.)
10
9
8
7
6
5
4
3
2
1
0
11 -- 4477 KK
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