Weil-McLain GV90+ Installation And Start-Up Manual page 59

GV90+ Series 2
OAS·FIRED WATER BOILER -
Boiler Manual
Start-up
Figure 71 Freeze protection guidelines
Freeze protection (when used)
14w.t~~IMII Follow these guidelines to prtvent possibility
of
se·o~t
personal injury. death or subsrantial
property damage:
NEVER UM outomollvo or ttandord glycol
on t - o,
ovon
glycol modo
lor hydronlc
ayotomo.
Use
only freeu-preventlon fluids
recommended
by
Weii-Md.ain for applica-
tion in
GV90+
Boiler systems.
Thoroughly ftush any ayllom
thot
h01
utod
glycol
before
installing
the
new
GV9<H-
boiler.
Review th• material alf•ty data s heet
(MSDS)
for
the
fluid used with the boiler
owner and leave a copy fo r rtftrtnct-. The
MSDS contains
information on potentia]
hazards and fustaid pcocedtueS for expostUe
or ingestion.
Q>ock onU"- lnhlbHor lovol at looot
an,....ty.
Glycol
concentration and inhibitor
levt'ls may change
over
time. Add antifrtt:ze
ro incrt!lk concentration
if
nect.Ssary.
Add
inhibito r as
n ~ed
to b ring to acceptable
ltvt'l,
· u sing
inhibitor tt.st kit ro verify.
When using freeu protection fluid with au-
tomaticfill,lnstall•
will« m•t•to
monitor
wlter
m•k•~p.
Freeze protecUon fluid may
leak before r.he war.er begins to leak, causing
conce11tration to drop, reducing the frtt:ze
protection le\·tl.
DO NOT axcood 50%ontH,_.by volumo.
Antifreeze moves mort sluggishly than wa-
fer and can intetfere with heat transfer. At
anti~
conct-ncration.s higher than 50%>
sludge can de-.·elop in the boiler, potentially
causing damage to the hear exchanger.
Cloon tho systom boloro ftlllng. Always
drain and
flush the
system
thoroughly berore
filling with antlfreeu. Sludge, icon oxide
deposits and other sedimenr in the system
inhibit flow and can cause rapid breakdown
of
inhibitors.
Part number 550-1+2-783/1012
lA
WARNlNG !
Eliminate aU sysr.em leaks. Continual
fresh makeup
water
will reduce boiler life. Minerals can build up in sections.
reducing hear t.ransfer.ow-rhearing cast iron.
and
causing
section failure.
Clean system to remove sediment
I. Y ou
must
tho"'ughly flush the system (without boiler connected)
to
rtmo~
sediment. Sedimenr can affecr chemica] trtatment of the
system and can damage system components.
2. For zoned systems, flush each zone separately throtll(h a purge
val~.
(If purgevatvesand isolarion val\'eS art not alrtacfy installed.
install them ro properly dean r.he system.)
3.
Flush sysrem untiJ water runs dean and )'Ou are surt piping
is
fret:
of sediment.
Water chemistry
~ - ~!i - ~·1
Using
sott•ned wM•r-
Softened war.er can becorro-
s i~.
Pay
special
attention to the inhibiror level, follow-
ing
the
instructions in thi.s manual and r.hose supplied
with the inhibitor.
WMor ehtmlttry lftlat bo wtlhln 1ho llmHo llatod In
the
following. If the warer differs in any way. consulr
a water crtarment company to ser up a crtatment pro-
gram
t.o
control the system water within these limits ar
the time of
ini
tial61i and throughout system operating
life.
Failure to maintain water c.bemistry as specified can
result iin damage to the boiler and system components.
resulting in potential for severe ptrsonal injury, death
or substantial property damage.
Water pH:
Minimum = 7.0
1
Maximum = 8.5
I. Maintain boiJer water pH
between
7.0 and 8.5. Check with litmus
paper or
ha~
chemically analyzed by ware:r trtarmenr company.
Hardne.ss: Maximum = 6.0 grains per gallon
I.
Thewater hardnessmustcomplywith rhemaximum \<alueabove.
High hardness will cause scale accumularion.
Chlorine: Maximum 200 ppm
I.
Filling with chl orinat~ fresh water should be acceptable since
drinking water chlorine levels
arc
typically less than 5 ppm.
2.
Do not
use
the boiler to d irectly hear swimming pool or spa
water.
3.
Do
not
fill boU er or
operate with water containing c. h lorine in
excess of 200 pi)m.
Antifreeze
I. Use only antifret:tt li.sred by Weii-McLain as suitable fo r
use
with
GV9()+ boilers. A list of
approv~
antifreeze products is available
ar www.Weii-Mclain.com.
59