Weil-McLain CGi Series 3 Installation And Maintenance Manual page 18

CG i
GAS-FIRED wATER BOILER- sERIEs a -
B oiler Manual
3f
Venting - direct exhaust- installation
I&
WARN ING!
18
1. Do not mix types or manufacturers of vent materi-
als.
2.
Clean all joints before sealing. See vent manufac-
turer' s instructions for cleaning and sealing joints.
Use their specified sealant.
Do
not use screws.
3.
Install vent pipewithseams on top of vent horizon-
tal runs. Follow requirements in Section 3e for vent
termination.
4. Maintain mininmm 2" clearance from combustible
materials to vent pipe.
5. Vertical venting - See Figure 13. Follow vent
manufacturer•s instructions fo r venting through
roof.
Vent pipe must extend through roof flashing,
jacket or thimble.
Vent may pass through floor, inside wall or
concealed space when installed according to
vent manufacturees instructions.
Sidewall venUng - See Figures 14 and 15.
Vent must temtinate at least one foot above
anticipated snowline. Vent must be terminated
only with:
Tee or elbow with integral screen. (Tee may be
mounted either vertically or horizontally.
DO
NOT use horizontal tee with CGi-7 or CGi-8.)
Elbow and termination coupling with screen
(not available for StaR-34).
6.
Do not seal vent pipe (slip connector for Saf-TVent)
to inside or outside plate.
7. If passing through noncombustible wall, provide
hole diameter large enough to insert the vent pipe
(slip connector for Saf-TVent).
8.
Install horizontal drain tee as dose as possible
to boiler, in first horizontal run. See Figures 13
and 14.
9. Do not exceed the maxin1un1 vent system length
given in Table 4, page 15.
Condensate drain line - use only silicone tubing rated
for at least 400•F for the first 18" of condensate drain
line, then other non-metallic tubing may be used. Us-
ing any other material could cause flue gas leakage,
potentially resulting in severe personal injury, death or
substantial property damage.
On some installations, the condensate drain firting may
be omitted, provided:
Vent manufacturer shows this option in their instruc-
tions.
Vent is sloped toward termination as shown in dotted
lines in Figure 14.
The vent is installed per WeB-McLain and vent
manufacturer's instructions.
Condensate drippage from such vents may acaunu-
late on the gromtd below. Consider traffic in the area
to avoid hazard due to ice accumulation.
Agure 13 Olrect exhaust vertical venting
Hortzonlal drain tee,
Follow vent
manufocturefs
Instructions to Install
condensate d rain line.
Follow vent
monulocturefs
fnstruclions for proper
lnstololion ol vent runs,
Including slope and
support.
71015
Figure 14 Direct exhaust sidewall venting
Fdbw vent
\
\
manulacture~s instructioos 1o<
proper lns1alation of vent runs,
including
slope,
s~port
and
oondensate drailage.
L.lJJ
Horizontal drain tee.
Rllowwnt
m anulacwrefs
instructions to instal
condensate drain line.
1 -
Optional downward
1
slope
without drail
1
fitting, where alowed
1
by
wnt
manufacturer
r as expelled
In
CPJJnON
at
left.
71016
Part Number 550-142-780/0712