TM 10-4520-259-13&P
a.
Turn off water heater outlet valve (1).
b.
Turn on fuel valve (2).
c.
Turn on power switch (3).
d.
Set to desired water temperature by adjusting operating temperature control (5).
e.
When water temperature gage (4) reaches desired temperature, turn on water heater outlet valve
(1).
2-13.
SHUTDOWN PROCEDURES. (Fig. 2-7)
Perform the following shutdown procedures after normal use or when the equipment will not be used for an
extended period.
a.
Turn off fuel valve (1).
b.
urn off power switch (2).
If freezing temperatures exist or are expected, or when water heater will not be used for five days or more,
continue as follows:
c.
Remove fuel supply hose (3) from fuel container (4).
d.
Place end of hose (3) into suitable container (5).
e.
Drain fuel from hose (3) into suitable container (5).
f.
Turn on power switch (2) and allow unit to operate until container (5) is almost empty. Turn off
water heater fuel shut off valve (1) and let system operate until flame extinguishes.
g.
Turn off power switch (2).
h.
Reach under water heater and open drain cock (6) byturning counterclockwise.
i.
Disconnect and drain water hoses (7). The M-80 will drain itself when hoses are disconnected.
The M-85 must have vent valve (8) opened in order to drain.
2-25
