Panasonic WH-ADC0309H3E5 Service Manual page 29


A Pressure Re educing Valv
be elow specific cation is stron
in stalled along g the line of t
Ta ank Unit. Re fer Typical P
to o locate both of these valv
R ecommende ed Pressure R
sp pecifications: :
Set pressu ure: 0.35 MP
o

Must connect M a faucet to T
C onnector i a and main wa
su upply water w with appropri
sh hower or tap usage. Failu
sc calding.

Fa ailure to con nect the tube
ca ausing the Ta ank Unit mal
(C) Pr ressure Reli ief Valve Dra

C onnect a dra ain hose to th
ho ose outlet .
h

Th he hose mus st be installed
do ownward dire ection and le
at tmosphere.

If drain hose is s long, use a
al ong the way y to eliminate
dr rain tube.

Th he water ma y drip from th
Th herefore mus st guide the
bl ock the outle et of the hose

D o not insert t this hose into
cl eaning hose e that may ge
su ulphuric gas etc.

If necessary, u use a hose c
at t drain hose c connector to

G uide the dra in hose to ou
th he right figure e.
Pos sible wall
Illustration o
drain hose to
(D) Do omestic Hot t Water Tan
Ta ap) and Safe ety Relief Va

Sa afety Relief V Valve 0.8MP
in Domestic H Hot Water Ta

D rain Tap and d Safety Reli
fit ttings share t the same dra

U se R½" male e connector f
co onnection (T ube connect

P iping must a lways be ins
do ownward dire ection. It mus
2m m, with no m more than 2 e
al low condens sation to buil
oc ccur.

Th he pipe from this drainag
be e shut off. Th he discharge
ve (field supp ply) with
ngly advised to be
the tube con nector i of
Piping Installa ation section
ves.
Reducing Va alve
Pa (3.5 bars)
Tank Unit Tu be
ater supply, i n order to
iate tempera ature for
ure to do so might cause
e appropriate ely might
lfunction.
ainage Pipe ework
he Pressure Relief Valve
d in a continu uously
eft open to th e frost-free
a metal supp ort fixture
e the wavy pa attern of
his discharge e hose.
hose without t close or
e.
o sewage ho ose or
enerate amm monia gas,
clamp to tight ten the hose
o prevent it fr om leaking.
utdoor as illu strated at
Dischar rge below
fixed gr rating
Fixed grating F
Trap pped gulley
of guide
o outdoor
k Discharge e (Drain
alve Pipewo ork
Pa (8 bars) in ncorporated
nk.
ef Valve disc charge
ainage outlet t.
for this drain age outlet
tor ).
talled in a co ontinuously
st not be lon ger than
elbows, and m must not
d up or freez zing to
ge outlet fittin ng must not
e must be fre ed.

The end of t
so that the o
damage. Ke

It is recomm
n
pipework. Tu
positioned a
electrical co
(E) Drain Elbow

Fix the Drain
Drain Water

Use inner di
market.

This hose m
downward d
environmen
water leakag

Guides this

Do not inser
that may ge
etc.

If necessary
hose at drai

Water will dr
of this hose
outlet canno
e
11. 1.3.5 Ai
Re
Befo ore system c
refri gerating sys
test procedure a
verif fied by the c
insta aller:-
Step p 1: Pressure
1) Steps for pre
5149.
2) Evacuate th
leak test, att
and tightly. C
Gas side. (C
Liquid side i
3) Adjust the k
regulator on
inserted thro
set.
4) Insert Nitrog
centre mani
the system t
for a few ho
on the gaug
5
this pipework k must be in
outlet is visib ble and canno
eep away from m electrical c
mended to fit a tundish int
undish shoul ld be visible
away from fro ost environm
mponents.
w and Hose Installation
n Elbow and Packing to t
r Hole .
ameter 17 m mm drain hos
must to be ins stalled in a co
direction and in a frost-fre
t. Improper d drain piping m
ge hence da mage the fu
hose outlet t to outdoor on
rt this hose in nto sewage o
nerate ammo onia gas, su
y, use hose c clamp to furth
n hose conn nector to prev
rip from this hose, theref
must be inst talled in an a
ot become blo ocked.
4
Packing
Drain
Elbow 3
ir-Tightnes ss Test on
efrigeratin ng System
charged with refrigerant a
tem in put in nto operation
and acceptan nce criteria s
ertified techn nicians, and/
e test for refr rigerant leak
essure test, in accordanc
e system fro om refrigeran
tach the gaug ge manifold
Charging hos se of Low sid
Charging hos se of High sid
f applicable. )
nob on the s service valve
the gauge s set, so that te
ough the cen ntre manifold
gen gas into t the system t
fold and wait t until the pre
to reach abo out 1MPa (10
urs and mon nitor the pres
es.
such a way
ot cause any y
components .
to this
and
ment and
the bottom o f
se in the
ontinuously
ee
may cause
rnitures.
nly.
or drain pipe
lphuric gas,
her tighten th he
vent leakage .
fore the outle et
area where th he
n the
m
and before th he
, below site
hall be
or the
detection:
ce to ISO
nt before the
set correctly y
de connect to o
de connect to o
s, and
est gas can b be
of the gauge e
through the
essure within n
0 BarG) wait
ssure reading g