Glow-worm ASCOT 1.4S - Page 8

4.1
Preliminary
Checks
Remove
front
case
and
conuols
uay.
Turn
the
gas
"Ofl',
turn
water on and
check for
watcr leakage
around
thc
heater.
Relit thc outcr
casc and
sccurc.
Turn
thc
gas
servicc
cock
"On".
It is
on
when
the
screw
driver slot
is in
linc with
the cock. It is otf
when the
screwdriver
slot
is
across the axis
of
thc
cock,
sec diagram 8.
Turn
thc
watcr
supply
on
in
a
similar
manncr
the
gas
supply, scc diagram
7
and chcck
that
water throttlc
is
not fully closcd,
sec
diagram
Opcn
all hot
watcr draw off
taps
individually
wait until
thc
water florvs frccly.
Closc
each
off
tao
in
turn.
lrl
the
10.
and
draw
4.2
To Light the
Pilot
Turn thc
gas
supply
on.
Fully
depress
the
"grs
on"
button
I
and operate
the
spark
ignition button ,Arz
until thc
pilot
is
lit,
see diagram 9.
Thc
pilot,
which
is
situatcd
to thc
lcft
hand
sidc
oi
thc
hcater
may
bc sccn
through the
pilot
vicrving
window,
sec
diagram
9.
Kccp
thc
"gas
on"
buLton
I
pressed in for
l0
scconds
thcn
rcleasc.
If
thc
pilot gocs
out
purgc
thc systcm and
rcpcat thc
opcration.
4.3 Adjustment of
Water
Temperature
Opcn
thc HOT
water
draw-off up
furrhcst
from
thc
hcatcr. Ensurc
that the
"SummerAVinter"
control
is
in thc
"Wintcr"
position,
scc diagram
9. Adjust thc
watcr
[hrottlc to
givc
thc rcquircd
\viltcr
ratc,
scc
tliagrarn
i0
(turn
anti-clockrvisc to
opcn).
A
watcr
ratc ol 6.7litrc/rnin
(i.5gal/rnin) r
\ii:h
is
9
scconds
to
fill
a
I litrc contirincr,
(5
scconcjs
;o
t'ill
a
I
pint
contlincr),
will
givc
a [cmpcraturc risc ol.
rbout 50"C,
(90"R.
Ar
watcr
ratcs
bclorv
6.7
litrc/rnin
(1.5
g:rl/rnin)
thc
\\':.ltcr ratc
will
proportion
thc
sas
ratc to
a
controllcd
lcmpcralurc
risc
sclcctcd
by'
thc
"SumrncrAVintcr"
control.
Ahcrnutivcly
it
may
bc
dcsirablc
to
sct thc
\\,atcr
to
lu
highcr flow
ratc
which rvill
rc.sulI in lorvcr
rvirtcr
tcn)pcrilturc.,i
dcpcnding
upon
thc
llo\\'
sr't
ilt thc
tilp.
This
allorvs
watcr
to
bc tlrarvrt ot't'
l'rom
thc
butlr
t:.rp
at
a suiublc.
[ctnpcri.lLurc
lbr
bitthins.
ll'highcr tcrnpcrilturcs
rrc rcquircd
at thc
othcr
orrtlcts
thc tcrllpcraturc
ciln bc controll'--d
bv
grlrlualll'
closirt{ thc
out['t tap
until a
tcrl]pcri.lturc
risc
ol' about -iO"C
(90"F)
i.s achicvcd.
'\n1'
lirrthcr rctluction
in
Ihc
rr'utcr
rat.c
*'ill
rcsult
irr
tlrc
tr'rnpcrlturc bcing controllctl
b1' thc hcutcr.
4.4 SummerMinter
Control
Thc
SummcrAVintcr
control
is intcndcd
to
rcducc
the eflcct
of
scasonal
variation in
u'atcr
supply'
tcmpcrilturc.
In thc
"\\'intcr"
position
thc
hcltcr
clclivcrs
a controllcti
tctnpcraturc
risc
ol
abouL
50''C
(90"F)
and
in thc
"Sumrncr"
pt-rsition
a
controllc'il
tcmpcri.rturc
ri.sc of about
-l-l"C
(80'F).
It
shoulri
bc
notctl
lhat
*ittcr llorv
ratcs itbovc
6.7
litrc/min
(1.5
gal/rnin) :rc outsiclc
thc
ranSc of
thc
controllcd
tcmpcritturc
tacilit,v and
thus rcndcr
thc
"surnrncrAVintcr"
control
incfl'cctivc.
In usc,
thc
control should
bc
sct
at
thc
"\\'intcr"
position in thc
s'intcr
and
spring
rnonths ttrtd
sct Itt
thc
"Summcr" position
in thc
sunrlncr
antl
auttlllln
rnonths.
Note: lt
is importltnt
thrt
tluring
lhc sutl]ttlt-r
rnonth.J thc
control
is turnctl
ttl
"Surnrncr"
llosititlrr
i,l:i outlct
tctltpcrilturcs
in crccss
tll'
(10''C
(lJ(I'F)
rnuy
rcsult
in scllc
lbrrttation
lttltl
rctlucctl
cll'icicncy
ol'
thc
he-iltcr.
P
ILOT
VIEWING
WINDOW
SU
M
MER/
WINTER
CONTROL
//rGNlTlON
I
cot
ot
O
orr
T
Diagram
9
WATER THROTTLE
ADJUSTING
SCREW
(Turn
anti-clockwise
to open)
N
VENTURI
WATER
TEMPERATURE
ADJUSTMENT
I-\i^^zrm 1 A
ulo9rqrrl
lv
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