TM 10-4520-262-12&P 0022 00
UNIT MAINTENANCE
SPACE HEATER, CONVECTIVE
(NSN 4520-01-431-8927)
0022 00-1
HEATER CONTROL ASSEMBLY
REPLACE
INITIAL SETUP
Tools
Materials/Parts
Tool Kit, General Mechanics (Item 1, WP 0044 00)
Personnel Required
Equipment Condition
One
Heater shut down and all advisory lights off. (WP
0006 00)
In-tent controller assembly disconnected from
heater. (WP 0006 00)
Fuel supply disconnected. (WP 0006 00)
Battery disconnected. (WP 0018 00)
Upper housing cover removed. (WP 0030 00)
WARNING
The ignition system of this heater contains dangerous voltages which can cause severe
electrical shock. Be sure to disconnect battery pack before any maintenance actions.
REPLACE
1. To replace the heater control assembly (1), remove the combustion air inlet cover (2) by rotating
the two quarter turn screws (3) until they release. Put the cover (2) aside.
2. Remove the four screws (4) that secure the heater control assembly (1) to the side wall of the
lower housing assembly (5).
3. Lift the heater control assembly (1) partially out of the heater and remove the two connectors (6
and 7) on the left side of the the heater control assembly by depressing the connector locks (8)
and wiggling the connector back and forth while pulling outward.
4. Remove the heater control assembly from the lower housing assembly.
5. Install a new heater control assembly (1) by putting it into position on the lower housing assembly
(5).
6. Connect the two connectors (6 and 7) by engaging into the connectors on the heater control
assembly (1) and pushing in until the connectors lock.
