1
Supply water piping
Do not use VC iron or an i in hich has een
treated ith chromates oiler seal or other chemicals.
ount a chec valve and a shut off valve (near the inlet).
n order for the client to use the ater heater
comforta l 8.1 to 4 1
a (14 to 0 S ) of
ressure is needed from the ater su
l .
e sure to chec the ater ressure. f the
ater ressure is lo
the ater heater cannot
erform to its full ca a ilit and ma ecome a
source of trou le for the client.
Drain piping
ansion ater ma dro from the ressure
relief valve and wet the
fl
oor.
f necessar rovide drain i in or use a drain
hose to remove the ater.
Hot water piping
Do not use lead VC iron or an i in hich
has een
treated ith
chromates oiler
seal
or
other chemicals.
he lon er the i in the reater the heat loss.
r to ma e the i in as short as ossi le.
Use mi in valves ith lo ater resistance.
Use sho er heads ith lo ressure loss.
f necessar use a um or other means to
ensure that the su
l ater ressure to the
inlet of the heater does not fall elo 2 S
hen the ma imum amount of ater is ein
demanded. lso install a ressure meter on
the inlet. f this is not done local oilin ill
occur inside the ater heater causin a normal
sounds and decreasin the dura ilit of the heat
e chan er.
Freeze Prevention
ree in is revented ithin the device automaticall unless the outside tem erature ithout ind
is elo -30
(-3
C).
When com ustion air is su
lied from the indoors the room tem erature must e reater than 32
(0 C)
to revent free in and the room inside must not have ne ative ressure.
f this model is installed in an area here the outside tem erature can a
roach free in conditions
of -30
(-3
C) or elo
then additional free e rotection measures must e used. or tem orar
free e rotection measures refer to the
ner s uide.
he free e revention heaters ill not revent the lum in e ternal to the unit from free in .
rotect this lum in ith insulation heat ta e or electric heaters solenoids or i e covers.
n order for the free e revention heaters to o erate the ater heater must have o er at all times.
