8
Installation
Installation
of
Steamix
203
Mixing
Valves
and
Hose
Stations
must
comply
with
the
relevant
Federal,
State
and
Local
Sanitary,
Construction,
and
Plumbing
Code
requirements.
1. When
installing
the
mixing
valve
and
associated
fittings,
position
the
valve
to
permit
easy
access
for
adjustment
and
servicing
procedures.
2. Steamix
Hose
Stations
and
Mixing
Units
are
supplied
pre-assembled
and
pressure
tested.
All
components
are
precision
fitted
by
professional
fully
trained
assemblers
using
an
anaerobic
thread
sealant.
Failure
to
"
Hold
Back
"
when
piping
to
the
unit
will
cause
component
shift
which
will
compromise
the
assembly
and
may
lead
to
leakage.
3. Install
shut
off
valves
on
each
inlet.
Install
shut
off
valves
in
a
location
which
discourages
tampering
by
the
operator.
Temperature
and
Flow
must
be
controlled
strictly
at
the
Mixing
Unit/Hose
Station.
4. Install
check
valves
on
both
inlets
to
prevent
backflow
through
the
mixing
valve.
Check
valves
will
assist
in
the
prevention
of
a
cross
connection
in
the
event
that
Steamix
flow
controls
are
left
open
and
an
outlet
flow
control
(spray
nozzle)
is
closed.
In
addition,
under
certain
circumstances,
backflow
may
create
a
pressure
differential
across
the
diaphragm
great
enough
to
allow
the
poppet
valve
to
open
and
steam
to
flow.
Without
inlet
flow
being
present,
this
becomes
a
potentially
dangerous
condition.
5. Install
unions
on
each
inlet
supply
(factory
supplied
on
specific
models).
6. If
the
unit
is
to
be
hard
piped
from
its
outlet,
then
install
a
union
at
the
outlet
to
facilitate
servicing.
7. If
not
supplied
by
the
Armstrong
Hot
Water
Group,
install
a
thermometer
in
the
outlet
pipe
work
for
ease
of
temperature
monitoring
and
adjustment.
8. Secure
the
mixing
valve
or
hose
station
to
a
wall
or
column
using
the
pre-drilled
mounting
plate
provided
for
this
purpose.
The
weight
of
the
unit
should
not
bear
directly
on
the
pipework.
9. Hose
Stations
include
a
rugged
stainless
steel
hose
carrier
and
backplate
pre-drilled
to
facilitate
anchoring.
Back
Flow/Back
Siphonage
Prevention
In
addition
to
check
valves,
the
installation
must
comply
with
Local
and
State
Codes,
as
well
as
the
requirements
of
any
Agency
responsible
for
the
inspection
of,
or
compliance
with
Federal
Regulations
relating
to
your
industry.
This
may
include
the
installation
of
single
or
double
action
Back
Flow
Preventer
and/or
Vacuum
Breakers.
