Installation
20
│
Page
Do
not
use
this
water
heater
if
any
part
has
been
submersed
under
water.
Immediately
call
a
licensed
professional
to
inspect
the
water
heater
to
replace
any
damaged
parts.
Do
not
reverse
the
hot
outlet
and
cold
inlet
connections
to
the
water
heater.
This
will
not
properly
activate
the
water
heater.
WATER
CONNECTIONS
All
pipes,
pipe
fittings,
valves
and
other
components,
including
soldering
materials,
must
be
suitable
for
potable
water
systems.
1.
A
manual
shut
off
valve
must
be
installed
on
the
cold
water
inlet
to
the
water
heater
between
the
main
water
supply
line
and
the
water
heater.
2.
In
addition,
a
manual
shut
off
valve
is
also
recommended
on
the
hot
water
outlet
of
the
unit.
If
the
water
heater
is
installed
within,
or
subjected
to,
a
closed
loop
water
system,
a
thermal
expansion
tank
must
be
installed.
3.
Before
installing
the
water
heater,
flush
the
water
line
to
remove
all
debris,
and
after
installation
is
complete,
purge
the
air
from
the
line.
Failure
to
do
so
may
cause
damage
to
the
heater.
4.
There
is
a
wire
within
the
cold
inlet
to
trap
debris
from
entering
your
heater.
This
will
need
to
be
cleaned
periodically
to
maintain
optimum
flow.
‐
Pressure
relief
valve
‐
The
water
heater
has
a
high
‐
temperature
shut
off
switch
built
in
as
a
standard
safety
feature
(called
a
Hi
‐
Limit
switch)
therefore
a
“pressure
only”
relief
valve
is
required.
This
unit
does
not
come
with
an
approved
pressure
relief
valve.
An
approved
pressure
relief
valve
must
be
installed
on
the
hot
water
outlet.
The
pressure
relief
valve
must
conform
to
ANSI
Z21.22
or
CAN
1
‐
4.4
and
installation
must
follow
local
code.
The
discharge
capacity
must
be
at
least
140,000
BTU/h.
The
pressure
relief
valve
needs
to
be
rated
for
a
maximum
of
150
psi.
The
discharge
piping
for
the
pressure
relief
valve
must
be
directed
so
that
the
hot
water
cannot
splash
on
anyone
or
on
nearby
equipment.
Attach
the
discharge
tube
to
the
pressure
relief
valve
and
run
the
end
of
the
tube
to
within
6"
from
the
floor.
This
discharge
tube
must
allow
free
and
complete
drainage
without
any
restrictions.
If
the
pressure
relief
valve
installed
on
the
water
heater
discharges
periodically,
this
may
be
due
to
a
defective
thermal
expansion
tank
or
defective
pressure
relief
valve.
The
pressure
relief
valve
must
be
manually
operated
periodically
to
check
for
correct
operation.
No
valve
must
be
placed
between
the
relief
valve
and
the
water
heater.
Pressure
Relief
Valve
Hot
outlet
Cold
inlet
Gas
inlet
As
Close
as
Possible
CAUTION
