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OPERATING PROCEDURES - TM-9-4520-271-140054
OPERATING PROCEDURES cont'd - TM-9-4520-271-140056

TM-9-4520-271-14 Improved Army Space Heater (IASH) Electric Powered Multi-fuel 140 000 BTU Model H-140 Manual
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TM 9-4520-271-14
0005 00
OPERATING PROCEDURES
Continued
Heating Mode
HEAT AUTO MODE
CAUTION
Do not operate the ASH in the heating mode for more than 10 minutes when ambient temperature is
above 100F (38C). Damage to equipment may result. Operating in the ventilation mode may be
done at any temperature.
1.
Set control panel MODE SWITCH (2) to COOL DOWN position.
CAUTION
Do not operate the ASH in the HEAT AUTO MODE if ignition arc is not present. Damage to
equipment may result.
2.
Look through sight glass (1) and check for ignition arc. Ignition arc should be steady and bright blue in color. If
ignition arc is not seen, do not operate ASH.
NOTE
After a flameout, the FLAME RESET switch locks out for 30 seconds to purge the heat exchanger
assembly of any unburnt fuel.
3.
Set control panel MODE SWITCH (2) to REMOTE CONTROL position.
4.
Set remote control panel mode switch (5) to HEAT position and proceed as follows:
a.
If FLAME OUT indicator (3) lights, wait 30 seconds and push FLAME RESET switch (4).
b.
If FLAME OUT indicator (3) lights after three attempts to reset, notify unit maintenance.
5.
Adjust remote control panel THERMOSTAT control (6) for desired temperature.
6.
Check fuel pressure gage (7) for proper pressure at elevation and voltage frequency (50/60 Hz) (WP 0002 00,
Table 3). If pressure is not correct, notify unit maintenance.
7.
After burner lights up, observe flame through sight glass (1). If flame is not bright and steady, notify unit
maintenance to adjust fuel pressure.
8.
Adjust fresh air damper assembly (8) for desired amount of fresh air by adjusting chain (9).
0005 00-9






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