Mr. Heater HS170FAVT Operating Instructions And Owner's Manual page 6

HOw MUCH HEAT DO I REQUIRE?
For economy, it is important to match input to that
required. But heat requirements often vary. For example,
it usually takes a lot more heat to get things warm than
it does to keep them that way. Likewise, outside air
temperature ususally changes during the day so you may
need more heat at night than you do in the daytime. An
approximation of the heat required can be found by using
the chart below.
BTU'S PER HOUR REQUIRED
Cubic feet Temperature Rise Required (
of space to
be heated 20
o
5,000 14,000
7,000 19,000
10,000 27,000
15,000 40,000
20,000 54,000
30.000 80,000
50,000 133,000 200,000
wARNINg: When using a thermostat controled heater,
its exit area should be protected from personnel and
warnings posted of sudden startup.
Recommended Minimum gauge
for Cord Extensions
wire gauge Chart A.w.g.
Name
Plate 120V
Amps. 25
5-6 18
6-8 18
8-12 18
10-12 16
12-14 16
70176 Rev. D 04/08 Operating Instructions and Owner's Manual
F)*
o
30 40 50
o o o
20,000 27,999 34,000
28,000 38,000 47,000
40,000 54,000 67,000
60,000 80,000 100,000
80,000 107,000 133,000
120,000 160,000 200,000
266,000 333,000
Cord Length in Feet
50 100 150
16 14 12
16 12 10
14 12 10
14 10 8
12 10 8
6
Enerco Group, Inc. | Force-Air Propane Construction Heater