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installed from a point downstream of the last unit to a point
upstream
of
the
first
unit
being
supplied.
This
will
equalize the pressure throughout the supply line.
WARNING:
TEST ALL CONNECTIONS FOR LEAKS BY BRUSHING ON A
SOAPY
WATER
SOLUTION
(liquid
detergent
also works
well).
NEVER TEST FOR GAS LEAKS WITH A FLAME.
4.
Steam Hookup (steam dryers only)
The
steam inlet connection of the steam coil
is 1-1/2"
MPT,
and the condensate outlet connection is 3/4" MPT.
The
working steam pressure of the dryer is 125 psi.
Supplying a
lower
steam
pressure
to
the
dryer will
result
in
slower
drying times.
When steam mains are lower than steam coil, pitch supply
and return lines downward to main pipes.
When
steam return runs
overhead, a check valve must be
installed after main trap.
It
is
good
practice,
and
you
will
save
energy
by
insulating the steam supply piping.
This
unit
is
not
equipped
with
a
steam
valve.
It
utilizes
an
air damper bypass
system
and
a
continuously
charged coil.
With this
system, the coil
will
always be
energized and hot.
Upon a call
for heat, the damper pivots
about
the steam coil,
allowing the
air to pass
through the
coil
and closing off cool
air.
When the temperature in the
dryer is satisfied, the damper will
pivot back onto the coil
directing cool
room air directly into the tumbler, bypassing
the
coil.
With
this
system,
heat
and cooling
are provided
instantaneously;
and
consequently,
there
is
a
direct
reduction in drying time and energy usage.
In addition, the
life
of
the
steam
coil
will
be
extended
because
it
is
not
constantly heating up and cooling down.
NOTE:
No electrically operated steam valve is supplied, and
none should be installed.
5.
Air Intake
When the dryer is operating, it draws in room air, heats
it, passes this air through the tumbler, and exhausts it out
of the building.
Therefore, the room air must be continually
replenished from the outdoors.
If the make-up air is inade¬
quate,
drying
time
and
drying
efficiency will
be
adversely
affected.
You
may
have
ignition
problems
and
sail
switch
"fluttering"
problems on gas dryers, and you also could have
premature motor failures from overheating.
7
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