
Model #400FAVT
WIRING DIAGRAM
400FAVT - WIRING CHART
PART
NO. COLOR LENGTH FROM TO
1100 White 7" Valve Terminal
connection
1040 Black 6" On/Off Switch Terminal
connection
1226 Red-(Hi-Temp) 16 1/2" High Limit Switch Valve
1226 Red-(Hi-Temp) 16 1/2" High Limit Switch Terminal
connection
1070 Orange 11" Flame Control Spark Plug
(Ignition)
1959 Green 7" Flame Control Ground
(Harness)
1959 Red 7" Flame Control Terminal
(Harness) connection
1959 White 6" Flame Control Terminal
(Harness) connection
1959 Black 6" Flame Control Terminal
(Harness) connection
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.
Recommended Minimum Gauge
for Cord Extensions
Wire Gauge Chart A.W.G.
Name
Plate 120V Cord Length in Feet
Amps. 25 50 100 150
5-6 18 16 14 12
6-8 18 16 12 10
8-12 18 14 12 10
10-12 16 14 10 8
12-14 16 12 10 8
WARNING: When using a thermostat controled heater, its
exit area should be protected from personnel and warnings
posted of sudden startup.
Cubic feet Temperature Rise Required (
o
F)*
of space to
be heated 20
o
30
o
40
o
50
o
5,000 14,000 20,000 27,999 34,000
7,000 19,000 28,000 38,000 47,000
10,000 27,000 40,000 54,000 67,000
15,000 40,000 60,000 80,000 100,000
20,000 54,000 80,000 107,000 133,000
30.000 80,000 120,000 160,000 200,000
50,000 133,000 200,000 266,000 333,000
BTU'S PER HOUR REQUIRED
6
Enerco Group, Inc. | Force-Air Propane Construction Heater Operating Instructions and Owner’s Manual
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).
04/07 Rev. C 72426
LINE
NEUTRAL
VALVE
GROUND
IGNTION
VALVE
MOTOR
HI-LIMIT
SWITCH
ELECTRODE
FLAME CONTROL
CAP
THERMOSTAT
LINE CORD
CHASSIS
GROUND
CHASSIS GROUND
T1
T2
T3
T4
B
R
B
G
R
W
R
R
B
W
G
O**
G
W
B
W
L
L
R
CONNECTION DIAGRAM
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