TM 10-4520-262-12&P 0004 00
SPACE HEATER, CONVECTIVE (SHC)
CONTROLS, INDICATORS, AND LABELS/INSTRUCTION PLATES
0004 00-1
GENERAL
This section contains information on the controls, indicators, and label/instruction plates located on the
Convective Space Heater.
Before operating the heater, the user should become familiar with the controls and indicators provided on
the unit. The operating controls are installed on the in-tent control assembly (1) and on the lower housing
assembly (2).
HEATER CONTROLS AND INDICATORS
The description and function of the controls and indicators of the in-tent controller assembly are detailed
in Table 1. The manual reset thermostat located on the lower housing assembly is described in Table 2.
Table 1. In-Tent Control Assembly Controls and Indicators
Key
Name
Function
1
ON-OFF switch
Controls starting and stopping of the heater. Movement of the
ON/OFF switch from one position to another initiates the step-by-
step transition of the heater from one operating condition to
another (the OFF condition to the ON condition, or the ON
condition to the OFF condition). This step-by-step transition is
controlled and timed by the heater control assembly, and not by
the movement of the ON/OFF switch.
2
HEATER ON/ON-HOLD light
(green)
When lit, indicates the heater assembly is in one of the following
modes: 1) pre-purge, 2) normal operation, 3) on-hold. The on-
hold mode means that the heater is not operating but it is ready
to start in response to changes in the tent temperature or
changes to the LOWER-HIGHER control settings.
3
LOWER/HIGHER control
knob
Controls the setpoint that the heater is trying to reach, thereby
controlling the heat output of the heater. Adjusting the control
knob causes the heater assembly to provide higher or lower heat
1
2
