Weil-McLain 550 MBH, Инструкция по установке и эксплуатации

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Part number 550-100-168/0516
42
Determine location for vertical terminations
1. Locate the vent/air terminations using the following guidelines:
2. The air piping must terminate in a down-turned 180-degree return
bend as shown in Figure 38, page 43. Locate the air inlet pipe no further
than 2 feet from the center of the vent pipe. This placement avoids
recirculation of flue products into the combustion air stream.
3. The vent piping must terminate in an up-turned coupling as shown in
Figure 38, page 43. The top of the coupling must be at least 1 foot above
the air intake. The air inlet pipe and vent pipe can be located in any
desired position on the roof, but must always be no further than 2 feet
apart and with the vent termination at least 1 foot above the air intake.
4. Consider the surroundings when terminating the vent and air:
a. Position the vent termination where vapors will not damage nearby
shrubs, plants or air conditioning equipment or be objectionable.
&IGURE
$)2%#46%.4VERTICALTERMINATION
DIRECT VENT — Vertical
termination with separate vent
and air pipes — installation
sequence
3TAINLESSSTEELPIPE — Install required
adapter at each boiler fitting where stain-
less steel pipe will be connected.
3TEP Install the boiler.
3TEP Determine the proper location for wall
penetration for each termination.
s
Prepare roof penetrations before
installing vent and air piping.
s Finish by attaching external pipe and
fittings as shown in the termination
instructions.
s
Install terminations as described in
this manual.
s Support vertical runs on the outside
of the building with brackets as
shown in the termination instruc-
tions.
3TEP Install air and vent piping from boiler
to termination.
s
Install a hanger support within
6 inches of any upturn in the piping.
s
Slope horizontal piping downward
toward the boiler at least 1/4 inch
per foot.
3TEP Connect the vent and air piping at the
boiler per manual instructions.
Allowable vent/air pipe materials
1. Use only the materials listed in Figure 13, page 23.
2. Install a bird screen in each vent and air pipe termination. Bird screens
are supplied with the boiler. Cut to size if necessary to fit vent pipe
size used.
Maximum piping length
1. Locate the terminations such that the total air piping and vent piping
from the boiler to the termination will not exceed the maximum length
given in Figure 37.
2. Maximum lengths listed in Figure 37 allow for 2 elbows. Additional
elbows require a reduction in maximum length as explained in the
table notes.
Connecting from termination to boiler
1. Install the terminations as instructed in the following. Then proceed to
page 45 to complete the air and vent piping between the termination
and the boiler.
&IGURE
Maximum piping lengths for DIRECT VENT vertical
termination
"OILER -!8)-5-PIPINGLENGTHFORPIPEDIAMETER
INCH INCH INCH
PP, PVC, CPVC, ABS, AL29-4C SS
Feet Elbows ** Feet Elbows ** Feet Elbows **
SF-550 30 2 100 2 Not allowed
SF-750 Not allowed 30 2 100 2
* For 4-inch or 6-inch piping, install a pipe reducer directly at the boiler connection,
oriented vertically. Install reducer above the required adapter if using stainless steel
piping.
** For piping using more than 2 elbows, reduce maximum allowable length by 7 feet for
each additional elbow (90° or 45°).
SlimFit
®
Series 3
COMMERCIAL CONDENSING GAS
-
FIRED WATER BOILER
—
Boiler Manual
DIRECT VENT — Vertical