Weil-McLain Evergreen EVG 110, Manual

Page: 9 / 144

Provide clearances for service
access — RECOMMENDED
1. See Figure 1 for recommended service clearances.
2. If you do not provide minimum service clearances
shown, it might not be possible to service the boiler
without removing it from the space.
3. Clearance D, Figure 1 allows for the installation of
piping as shown in Figure 8, page 12 plus a close nipple
and elbow.
Closet or small-enclosure installations
which do not provide at least these
recommended clearances require the
specially-sized and placed air openings
shown in Figure 2
.
Provide clearances from combustible
materials — REQUIRED
1. See Figure 2 for REQUIRED minimum clearances. ALL
installation must provide at least these minimums.
2. Hot water pipes — at least ½ inches from combustible materials.
3. Vent pipe — at least
3
/
16
inches from combustible materials.
4. Clearance D, Figure 2 allows for the installation of a reducer
bushing (155 only) and elbow. Other piping may require
additional clearance.
5. See Figure 1 for service clearance minimums.
Closet or small-enclosure installations which do
not provide at least the recommended service
clearances shown in
Figure 1 require the specially-
sized and placed air openings shown in Figure 2
.
Figure 2
REQUIRED minimum clearances
(
all dimensions are in inches
)
Figure 1
RECOMMENDED service clearances
(
all dimensions are in inches
)
Boiler location
(continued)
Part number 550-100-191/0917
9
®
g
as-fired water boiler —
70/110/155
Boiler Manual
A Provide combustion air/ventilation openings per Figure 25, page 27 or as
otherwise directed in this manual or by applicable codes.
If the
installation does not provide the minimum clearances in Figure 1 , then the
enclosure MUST HAVE air openings located per Figure 2 , above. Each of these air
openings must have free area of at least 1 square inch per 1,000 MBH of boiler
input.
B Left side clearance to combustibles =2.5 inches minimum.
C Top of boiler clearance to combustibles = 10.5 inches minimum.
D Right side clearance to combustibles = 2.5 inches minimum.
E Bottom of boiler clearance to combustibles = 7 inches minimum (must be
18 inches above fl oor for garage installations) for wall hung installation, 0 inches
minimum for fl oor standing installation.
F Clearance in front of the boiler = 0.5 inches, but 24 inches minimum required
for service.
G Air openings must be located in the FRONT of the enclosure, as shown. They must
be no more than 12 inches from the fl oor or ceiling, as shown.
H Vent pipe must be minimum 3/16 inch from combustibles. Opening in
combustible wall, fl oor, ceiling or roof must be 3/8 inches larger than fl ue pipe
diameter, fi tted with corrosion resistant steel thimble, or larger if required by
codes or as specifi ed by vent pipe manufacturer.
A Provide combustion air/ventilation openings per
Figure 25, page 27 or as otherwise directed in this manual or
by applicable codes. NOTE: If the installation does not provide
the minimum clearances in this illustration, then the enclosure
must have air openings located and sized per Figure 2 .
B Left side service clearance = 3.5 inches minimum.
C Service clearance above top of boiler = 12 inches minimum.
D Right side service clearance = 8.5 inches minimum.
E Service clearance below the boiler = 12 inches minimum for
wall hung installation, 0 inches minimum for fl oor standing
installation.
F Service clearance in front of the boiler = 24 inches minimum.
ADDITIONAL service clearance may be
needed, depending on how piping is routed
to the boiler.