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HOW MUCH HEAT DO I REQUIRE?
For economy, it is important to match input heat 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 usually 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
120,000
50,000
133,000
WARNING: When using a thermostat controled heater, its
exit area should be protected from personnel and warnings
posted of sudden startup.
Model #400FAVT
WIRING DIAGRAM
COLOR CODE / LEGEND
B
BLACK
L
BLUE
G
GREEN
O
ORANGE
R
RED
W
WHITE
T_ TERMINAL CONNECTION
If any original wiring as
supplied by the heater must
be replaced, it must be
replaced with type AWG 105°
C wire or its equivalent except
as indicated (*type SF2-200,
**SGI 250° C).
o
F)*
30
o
40
o
50
o
20,000
27,999
34,000
28,000
38,000
47,000
40,000
54,000
67,000
60,000
80,000
100,00
80,000
107,000
133,000
160,000
200,000
200,000
266,000
333,000
CHASSIS GROUND
MOTOR
T
THERMOSTAT
LINE CORD
Force-Air Propane Construction Heater
Recommended Minimum Gauge
for Cord Extensions
Wire Gauge Chart A.W.G.
Name
Plate 120V
Amps.
5-6
6-8
8-12
10-12
12-14
400FAVT - WIRING CHART
PART
NO.
COLOR
1100
White
1040
Black
1226
Red-(Hi-Temp)
1226
Red-(Hi-Temp)
1070
Orange
1959
Green
1959
Red
1959
White
1959
Black
CONNECTION DIAGRAM
VALVE
HI-LIMIT
SWITCH
W
T2
W
T3
T4
W
CHASSIS
GROUND
6
Operating Instructions and Owner's Manual
Cord Length in Feet
25
50
100
18
16
14
18
16
12
18
14
12
16
14
10
16
12
10
LENGTH
FROM
7"
Valve
Terminal
connection
6"
On/Off Switch
Terminal
connection
16 1/2"
High Limit Switch
Valve
16 1/2"
High Limit Switch
Terminal
connection
11"
Flame Control
Spark Plug
(Ignition)
7"
Flame Control
Ground
(Harness)
7"
Flame Control
Terminal
(Harness)
connection
6"
Flame Control
Terminal
(Harness)
connection
6"
Flame Control
Terminal
(Harness)
connection
ELECTRODE
O**
IGNTION
VALVE
LINE
W
NEUTRAL
GROUND
150
12
10
10
8
8
TO
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