MrHeater MH400FAVT, Operating Instructions And Owner'S Manual

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Force-Air Propane Construction Heater Operating Instructions and Owner’s Manual
Model #400FAVT
WIRING DIAGRAM
400FAVT - WIRING CHART
PART
NO. COLOR LENGTH FROM TO
1100­ White­ 7”­ Valve­­ Terminal­
­ ­ ­ ­ connection
1040­ Black­ 6”­ On/Off­Switch­ Terminal
­ ­ ­ ­ connection
1226­ Red-(Hi-Temp)­ 16­1/2”­ High­Limit­Switch­ Valve­
1226­ Red-(Hi-Temp)­ 16­1/2”­ High­Limit­Switch­ Terminal
­ ­ ­ ­ connection
1070­ Orange­ 11”­ Flame­Control­­ Spark­Plug
­ ­ ­ (Ignition)­ ­
1959­ Green­ 7”­ Flame­Control­ Ground
­ ­ ­ (Harness)­
1959­ Red­ 7”­ Flame­Control­­ Terminal
­ ­ ­ (Harness)­ connection
1959­ White­ 6”­ Flame­Control­ Terminal
­ ­ ­ (Harness)­ connection
1959­ Black­ 6”­ Flame­Control­ Terminal
­ ­ ­ (Harness) connection
HOW MUCH HEAT DO I REQUIRE?
For­economy,­it­is­important­to­match­input­heat­to­that­
required.­But­heat­requirements­often­vary.­For­example,­
it­usually­takes­a­lot­more­heat­to­get­things­warm­than­
it­does­to­keep­them­that­way.­Likewise,­outside­air­
temperature­usually­changes­during­the­day­so­you­may­
need­more­heat­at­night­than­you­do­in­the­daytime.­An­
approximation­of­the­heat­required­can­be­found­by­using­
the­chart­below.
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: When­using­a­thermostat­controled­heater,­its­
exit­area­should­be­protected­from­personnel­and­warnings­
posted­of­sudden­startup.
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 60,000­­­­­­­­80,000­­­­­­­­­­100,00
­ ­20,000­ 54,000­ 80,000­­­­­­­107,000­­­­­­­­­133,000
­ ­30.000­ 80,000­­­­­­­120,000­­­­­­­­160,000­­­­­­­­200,000
­ ­50,000­­­­­­­­­­­­­­­­133,000­­­­­­­200,000­­­­­­­­266,000­­­­­­­­333,000
BTU’S PER HOUR REQUIRED
COLOR­CODE­/­LEGEND­
B­­
BLACK­
L­­ BLUE­
G­­ GREEN­
O­­ ORANGE­
R­­
RED­
W­­ WHITE­
T_­­ TERMINAL­CONNECTION­
If­any­original­wiring­as­
supplied­by­the­heater­must­be­
replaced,­it­must­be­replaced­
with­type­AWG­105°­C­wire­
or­its­equivalent­except­as­
indicated­(*type­SF2-200,­
**SGI­250°­C).