e. Water Blender Valve. The water blender valve
The bath unit instruments, located on the water heater,
(2) is located on top of the heater between the water
are as follows:
bypass hose and the upper manifold. This valve allows
cold water, coming directly from the water source, to
The water
a. Water Temperature Gage.
enter the manifold and to mix with the heater water
leaving the heater. Turn the valve counterclockwise to
water heater control panel box.
It indicates the
open the valve, allowing the cold water to mix with the
temperature of the water that is being supplied to the
heated water, and clockwise to close the valve, stopping
showers. On Army models SPE 35 and SPE 35A, the
the cold water from mixing with the heater water.
dial is graduated from 400 to 2200 F. On Army models
SPE 41, SPE 44, York-Shipley model YS49279 and
York-Shipley model 8-SH70YS, Army model SPE 45,
f. Blower and Fuel Pump Motor Switch. The
the dial is graduated from 600 to 2400 F. During
blower and fuel pump motor switch is located under the
operation of the bath unit, the normal temperature on
switch cover (5, fig. 2-11A) on the water heater control
the gage, for all models, should be between +950 and
panel box. It is used to start and to stop the motor. Lift
+105 F.
up the switch cover and move the switch upward to the
ON position to start the motor and downward to the OFF
b. Fuel Pressure Gage. The fuel pressure gage (3,
position to stop the motor.
box beside the water temperature gage (2). It registers
the pressure in pounds per square inch of fuel being
g. Water Pump Motor Switch. The water pump
supplied to the burner. The dial is scaled from 0 to 160
pounds. The pressure will vary from 5 to 100 pounds
on the water pump control panel box. It is used to start
per square inch according to the setting of the burner
and to stop the motor. Lift up the switch cover and
fuel control valve (para 2-5 a ). With the burner fuel
move the switch upward to the ON position to start the
control valve set in the low-fire position, the gage should
motor and downward to the OFF position to stop the
register 5 pounds per square inch; with it set in the
motor.
medium-fire position, the gage should register 60
pounds per square inch; and with it set in the high-fire
position, the gage should register 100 pounds per
square inch.
2-13