TM 9-2540-207-14&P
SECTION 3
OPERATING INSTRUCTIONS
The Heater is compatible with the vehicle control boxes identified in Table 3-1.
Note: See appropriate Vehicle TM for proper Control Box configuration.
Control Boxes:
11669705 (NSN: 2590-01-125-6154)
12268109 (NSN: 2490-01-083-5417)
12330264 (NSN: 2540-01-158-0837)
Panel Assembly:
12345539 (NSN: 6110-01-266-4006)
Test Stand:
ATPD 2165
Table 3-1. Approved Control Boxes
3.1
STARTING THE HEATER
(1) The START/OFF/RUN switch on the control box should initially be in the OFF position.
(2) The HI/LO switch on the Control Box may be in either position during start up. (If the switch is in the HI
position, the Heater will start and enter High Heat mode. If the switch is in the LO position, the Heater will
start and enter Low Heat mode.)
(3)
To start the Heater, move the START/OFF/RUN switch momentarily to START for at least four (4) seconds,
and then move the switch directly to RUN. The Heater will now run automatically and does not require
any further actions by the operator.
Note: to start the Heater in the M1 Tank, the Control Box Switch must be held in the
"Start" position until the indicator lamp Illuminates, and then moved to the "Run"
position.
3.2
STARTING SYSTEMS PROCEDURES
i.
The Heater will start the Vent and Burner Fans and after checking for vent overheat condition, if none is
found, display 01 on the Diagnostic Display. For the next 20 seconds the Heater will perform a number of
diagnostic checks on both the Vent and Burner Fans and certain other components for possible failure.
ii.
The heater then enters Stage 02. The Igniter will turn on and requires approximately 50 seconds to
heat fully. During this delay the Heater will check the condition of the igniter, perform a diagnostic
check of the segments and control circuit of the Diagnostic Display, check for reverse air
flow, combustion air inlet over pressure, and low voltage conditions. During the check of
the
Diagnostic
Display
it
will
go
through
a
series
of
steps
in
the
sequence
shown
in
3-1
