OPERATING TEST PROCEDURE
1. Aft r installation, bring th boil r wat r to
a saf op rating l v l, turn on pow r and
s t th th rmostat to call for h at. Th
amb r LED lamp should b off. T e boiler
will fire immediately.
2. Slowlylow r th boil r wat r to a point
b low th prob . Th amb r LED lamp on
th control will light. Th lamp may b gin
to flick r with th bouncing wat r l v l.
Stop draining th boil r wh n th lamp
glows st adily. NOTE: Th wat r should
not b low r d b yond a visibl point in
th gaug glass.
3. Th boil r will shut down within 15
s conds.
TEST BUTTON
Th CG470 is quipp d with a button to t st
wiring and control op ration. To us th t st
button, r mov th cov r and pr ss th but-
ton locat d on th circuit board. Th burn r
will shut off for th l ngth of tim th button
is pr ss d. If th burn r do s not shut off,
r mov pow r and r ch ck wiring. Not :
Hydrol v l r comm nds low ring th wat r
l v l (as d scrib d in “Op rating T st
Proc dur ”) to functionally t st th control
and prob op ration on an annual basis.
IF BURNER DOES NOT SHUT DOWN IN
LOW WATER
1. Ch ck t rminal block wiring to insur that
all conn ctions ar corr ct.
2. Ch ck th prob installation to insur that
th r is 1/4" cl aranc from any surfac
within th boil r or pip . (R f r to St p 1
on pag 1 of this instruction sh t.
3. Cl an th boil r in accordanc with th
manufactur r’s instructions. Machining
oils, gr as , rust and oth r contaminants
in th boil r wat r can caus foaming or
surging and mak a low wat r condition
difficult to d t ct during burn r op ration.
IF THE AMBER LED LAMP IS ON
Th amb r LED lamp indicat s that th wat r
is b low th prob . If th gaug glass shows
that th wat r is at th corr ct op rating l v l
and th amb r LED is lit, ch ck th following:
1. Ch ck for plugg d gaug glass.
2. Mak sur prob l ad wir is prop rly
s cur d to th t rminal.
3. Ch ck for prop r ground b tw n prob
and boil r sh ll. Exc ssiv us of T flon
tap or s aling compound may isolat th
prob from th boil r sh ll.
4. R mov prob and xamin for oily
r sidu . Cl an prob with st l wool and
skim boil r.
IF THE RED LED LAMP IS ON
Th r d LED lamp indicat s that th boil r
has xp ri nc d an unsaf t mp ratur
(250°F). Th control will lock out th burn r
circuit and illuminat th LED wh n this
occurs. DANGER: Adding wat r to an ov r-
h at d boil r can caus an xplosion. Th
boil r must b allow d to fully cool b for
adding wat r. Th boil r should b valuat d
by a qualifi d s rvic t chnician b for
r storing op ration. Th Cycl Gard control
should b r plac d.
IF THE RED LED LAMP IS BLINKING
A blinking r d LED lamp indicat s that th
control has b n lock d out on an unsaf
t mp ratur at som point in its history. Th
Cycl Gard control should b r plac d.
IF THE GREEN LED LAMP IS ON
Th gr n LED lamp indicat s that th control
is conducting an Int rmitt nt L v l T st. Th
burn r do s not fir during th t st p riod.
S Int rmitt nt L v l T st F atur on this
pag for mor d tails.
Enhanced Intermittent
Level Test Feature
To provid add d prot ction to today’s small-
r boil rs, Cycl Gard Mod l CG470 is
quipp d with an nhanc d Int rmitt nt L v l
T st (ILT) f atur . Fift n minut s aft r th
boil r r ach s boiling t mp ratur , th ILT
f atur r mov s pow r from th burn r for
60 s conds. During this ILT t st, foam dissi-
pat s and th wat r l v l quickly stabiliz s,
allowing th CG470 to monitor th tru wat r
l v l in th boil r. If th wat r in th boil r is
at a saf l v l, th control will r - n rgiz th
burn r. If th wat r l v l has dropp d to a
l v l b low th prob , th control will k p
th burn r off (and s nd pow r to an optional
wat r f d r) until th wat r l v l is r pl n-
ish d. Th 60 s cond ILT t st will r p at
v ry 15 minut s as long as th boil r
r mains at boiling t mp ratur . Th ILT f a-
tur dis ngag s wh n th boil r t mp ratur
is b low th boiling point.
Th optional Smart Cycl f atur is d sign d to
pr v nt unn c ssary ILT t sts in th v nt th
burn r cycl s off for oth r r asons ( x. pr s-
sur limit or th rmostat calls). Wh n activat d
(s wiring on pr vious pag ), th Smart Cycl
f atur r starts th 15 minut timing s qu nc
ach tim th burn r fir s. So, for xampl , if
th pr ssur control shuts down th burn r,
th Smart Cycl f atur will r s t th 15
minut clock onc th pr ssur control r -
n rgiz s th burn r. This pr v nts an ILT
from occurring soon r than is n d d as th
control was abl to monitor th s ttl d wat r
l v l during th pr ssur limit int rruption.
Hi Temp Lock-Out
Unlik any oth r st am low wat r cut-off, th
CG470 monitors boil r t mp ratur in addi-
tion to wat r l v l. This f atur will shut
down and lock out th burn r circuit if th
boil r r ach s an unsaf l v l (250°F).
3
OPERATING INSTRUCTIONS
NOTE: For prop r low wat r cut-off op ration, th boil r should b cl an d at initial installation and p riodically th r aft r. R f r to th boil r
manufactur r’s instructions for cl aning proc dur s.
