Weil-McLain GV90+ Installation And Start-Up Manual page 53

GV90+ Series 2
OAS•FIRED WATER BOILER -
Boiler Manual
DIRECT EXHAUST - Vertical
Allowable vent/air pipe materials &
length a
IAWARIINO! Use only the vent materials and kits listed
in Figure 40, page 33. Provide pipe adapt-
ers
if specified.
I. Locate the termination such rhar the totaJ air piping
and vent piping from the boiler ro the termina -
tion
wiJJ
nor exceed the maximum length given in
Figure
39,
page
32.
Determine termination location
I. The vt-nr tenn;nations musr
be
installed as shown
in Figure 63, page 53.
2. The terminations mu.srcomply with dearances and
limitations shown in Figure 41, page 35.
3. Locate the termination
so
iris not likely
tO
be
dam-
aged
by
foreign objects, such as stones or balls, or
subject to buildup of
leaves
or sediment.
Multiple vent/air terminations
I. Terminate each vent of multiple direct exhaust
GV90+ boilers as described in this manual for
indiv iduaJ ven ts.
2. Space terminations as required fo r
best
installation
practices and r.equirtd mainrenance.
Prepare roof penetration
I.
Venr pipe penetration:
a. Cut a hole- for the vent pipe. For either com-
bustible or noncombustible construcrion, size
the
ve~t
piJ?e hole at least O.S .. Iarger than rhe
vent p1pe diamerer.
b.
Hole diamerer in
the
mrtal places must be at
least 4" for PVC pipe. For AL29-4C vent pipe
and coupling (or elbow) -site hole 0.5" larger
than vtnr p ipe outside diamerer.
c. lnserr a gah'lllliud meral thimble in rhe vent
pipe hole.
2. FoliO\• all
local
codes for <solation of vent pipe when
passing through floors, ceilings and roof<
3. Provide flashing and seaUngboots stud for the vent
pipe and air pipe.
NOTICE
\"'heff the \-ent penetrateS the
roo~
the an-
nular space around the pe-netration must
be permanendy sealed using approved
marerial.s to prevent
entry
of combustion
produtiS intO the building.
Part
number
550-14-2-783/1012
Figure 63 INSTALLAllON SEQUENCE - Direct exhaust vertical
6
~Bird
screen
Vent
termination
coupling
Step 1
Read and fo! low aU "instructions in
thts
manual. DO
NOT
proceed wtt h ventlalr lnstallallon l.l"'dl you have read
pago 29
through
pago 3S,
page 49 and page 50.
Step 2
Install rhe boiler in a locarion that allows proper routing of
all \" tnt and air piping to rhe selecred sidewall location.
Step 3 Make sure the
select~
vertical termination location com-
plies with Figure
41.
page
35.
Step 4
Use only the venr materials listed in Figure
40,
page
33.
Provide pipe adapters where
requir~.
Vent piping and air
piping lengths must not exceed the \'alues shown in Fig-
ure 39, page 32.
Step 5
Prtpa~ the vertical ptnerration and
kC'Urt
penrtration
componenrs
as
instructed in this section. See «Prepare roof
penetrations" on page
43
and
"Termination and fittings"' on
page 44.
Step 6 The \'tnt piping must terminate in a coupling pointed
upward as s. " hown abo\rt.
Step 7
Install \'tnt and air piping between rhe boiler and rhe ..
-~rti­
cal termination. Slope horizontal piping downward toward
the boiler at lease
1/4
inch per foot. Install pipe supporrs
e-.·ery 5 feet Qn
both
the hori7.onml and verrical runs. Install
a hanger supporr within 6 inches of any upturn in the pip-
ing. See page 48 for general guidelines.
Step 8 Maintain minimum dearance ofo/u1 inch between vent pipe
and any combustible waJJ or
mat~rial.
Step 9
lnserr the \rt:nt piping through the \rtrtical penetration and
secure the rermination coupling.
Step 10 Maintain clearances shown
abo..-~.
Venr
t~nn inarions
must
be fitted witih a bird sc.reen as shown
53