c. Drain Outlet Connection The drain connection
Water Box Interior Connections and Sump
facilitates interconnection of shelter drain systems.
d. Hose Heater Receptacle. The hose heater
a General. The water box interior connections and
receptacle is provided as a source of 120 volts, 400 Hz
sump installation (fig2-6) is located at the front fixed wall
electrical power for outlet hose heater.
of the shelter and consists of hot and cold water
connections, sump, vacuum connection, washer drain,
Conditioned Air System
and overboard drain.
Ducts (fig. 2-8) are installed between a conditioned air
b Hot and Cold Water Connections. The hot and
source and the expandable shelter roof duct adapter (fig.
cold water connections contain two capped ports each to
to provide inlet
or return air passage for the shelter.
facilitate connections of water service equipment.
Metal flanges at each end of the duct provide for
c Sump. The sump is secured to the shelter floor
connection by clamping to the shelter and air source or
in front of the water box and contains connections for
additional ducts may be joined together if required. Air
sump vent, service equipment drain, and sump drain.
distribution plenums (fig. 2-9) are connected to the metal
(1) Sump vent. The sump vent is located at the
flange on the interior of the shelter. The air distribution
top side of the sump and vents the sump to the
plenum has four sets of air directional vanes, each one
adjustable for control of conditioned air into the shelter.
(2) Service equipment drain.
equipment drain is located at the top side of the sump.
Operation Under Normal Conditions
The drain allows waste from service equipment to enter
(1) The instructions in this section are published
(3) Sump drain. The sump drain is located on
for the information and guidance of personnel
the bottom of the sump and is connected to the sump
responsible for operation of the expandable shelter.
pump to facilitate draining of waste from service
(2) The operator shall be familiar with the
operation of all of the components and fixtures of the
d Vacuum Connection. The vacuum connection is
expandable shelter. This section provides instructions
located on the inner face of the water box and facilitates
for operation of the various components and fixtures of
connection and operation of vacuum equipment.
the expandable shelter and for coordinating the basic
e Washer Drain. The washer drain is a plugged
motions to perform the specific functions for which the
port located on the inner face of the water box and
shelter is designed. Since nearly every job presents a
facilitates draining of washer, when used.
different problem the operator may have to vary given
The overboard drain is
procedures to fit the individual job.
located on the top left end of the water box and contains
b. Operation of Components and Fixtures.
connections for humidifier drain and sump vent.
(1) Air lock door. Operation of air lock door
(1) Humidifier drain connection. The humidifier
handles and adjustment of anti-backdraft valves on
drain connection is a capped port on the overboard drain
which is utilized for drainage of the humidifier when used.
(2) Shelter doors. Operation of shelter doors is
(2) Sump vent connection. The sump vent
connection has a sump vent line connected which
(3) Blackout curtains. Operation of blackout
facilitates venting of the sump to the overboard drain.
(4) Conditioned air plenums.
Water Outlet Panel
conditioned air plenums is shown and described in figure
(5) Electrical circuit breakers and components.
located at the bottom rear of the shelter and serves as
(a) The power distribution panel, located
an interconnection point for additional shelters. The
above the access door on the inside of the rear center
water output panel contains connections for hot and cold
section wall, contains all circuit breakers for shelter
water outlet, drain outlet, and hose heater.
electrical systems with a hinged door for access.
b. Hot and Cold Water Outlet Connections. Two
(b) Circuit breaker panel.
outlet connections are furnished for interconnection of
breaker panel (fig. 2-3) provides protection for shelter
shelter water system.
electrical circuits. Circuit breakers are push-pull type,
which when overloaded will pop to