TM 5-4520-208-15
(f) Remove electric motor power unit
13. Installation and Setting-up Instructions
a. Position the heater on firm ground with
from heater by disengaging drive
the tow bar (fig. 1) in the lowered position. If
coupling from flexible rubber
the heater tends to roll, chock the wheels to
sleeve.
prevent movement, The air hose arrangement
Caution: Do not damage electric
depends on nearness to the item to be heated.
cable when withdrawing cable
b. Remove discharge outlet cover, If the 12-
through cable outlet in side panel.
inch air hose (2, fig. 9) is to be used, attach
the 12-inch air hose directly on the 12-inch
(2) Installation.
duct adapter assembly (1).
c. If the 6-inch air hose (5) are to be used,
cable outlet in side panel and pull
remove the discharge outlet cover and install
excess cable through outlet.
the 6-inch duct adapter (4) on the 12-inch duct
(b) Position electric motor power unit,
adapter assembly (3). Connect the 6-inch air
with attached bracket, on heater.
hose (5) to the 6-inch duct adapter (4).
Engage drive coupling on electric
d. All air hose can be interconnected by in-
motor power unit (fig. 8) with flex-
stalling the 12-inch air hose (6) on the 12-
ible rubber sleeve. Aline holes in
inch duct adapter assembly. Install the 6-inch
bracket with holes in resilient
duct adapter (8) on the 12-inch air hose and
mounts and secure power unit with
attach the 6-inch air hose (7) to the 6-inch
three thumb screws. Tighten thumb
duct adapter.
screws finger tight.
buildings, or similar enclosures, place the heat-
haust extension and dust plug in
er near the inclosure and run the air hose
engine hose assembly quick-dis-
through a window or opening. For maximum
connect coupling.
performance of the heater, all unused space in
(d) On Model BT400-40 heaters, install
this opening should be blocked with lumber,
cabinet to inclose power unit and
canvas, or some similar material.
secure with latches.
(c) On Model BT400-40-1 heaters, close
Warning: Do not operate heater in a build-
ing. Inhalation of exhaust fumes will result
cabinet to inclose power unit and
in serious illness or death.
secure with latches.
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