TM 9-4520-251-14
Chapter 2 OPERATING INSTRUCTIONS
Section I. DESCRIPTION AND USE OF OPERATOR’S CONTROLS AND INDICATORS
2-1 G E N E R A L .
The Model PH-400-G Heater is designed for a variety of installations and for operation under a wide range
of climatic conditions. It is also designed for continuous or intermittent operation as a self-contained unit.
Heaters may be used to heat warehouses and for shop applications if personnel exposure is limited to not
more than 8 hours and ventilation is adequate.
2-2
OPERATOR'S CONTROLS AND INDICATORS.
A FUEL GAUGE (Located on fuel tank). Needle indicates E (empty), 1/4, 1/2, 3/4, and F (full).
B BURNER CONTROL KNOB. When dosed (up) fuel goes to tank, when open (down) fuel goes to
nozzle.
C TEMPERATURE INDICATOR KNOB. Pointer on knob indicates selected temperatures in 25-de-
gree steps from low to 150°F (65.6°C) to high of 280°F (138°C).
2-1
