Direct Vent - Sidewall Termination (Category Iv) - Weil-McLain SVF 725 Manual

Commercial condensing gas-fired water boilers
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DIRECT VENT - Sidewall Termination (Category IV)

1
Determine Termination Location
The vent termination must be installed as shown in
Figure 39 and Figure 41, page 54 The termination
placement must comply with clearances and
2
limitations shown in Figure 38, page 51
1
Install the termination in a location where damage
from foreign objects and buildup of leaves or
sediment is unlikely
2
Ensure proper clearance above grade or
3
snow line Keep vents and air area clear of
accumulating snow
3
Install the boiler in a location that allows proper
routing of all vent piping from the boiler vent
connection to the selected sidewall location
WARNING
!
4
Locate the termination such that the total vent
piping from the boiler to the termination will not
exceed the maximum length given in Figure 24,
page 37 for Category IV venting. Failure to
comply can result in severe personal injury,
death, or substantial property damage.
5
IMPORTANT
Read and follow all instructions in this manual. Do
not proceed with vent installation until you have read
pages 29-36, 45-46, & 52. Comply with
all vent system manufacturer's instructions.
6
Multiple Vent Terminations
When terminating multiple SVF boilers, terminate
each vent connection as described in this manual
See Figure 40, page 53 for typical layout
For U S installations, place wall penetrations to
7
obtain minimum clearances shown in Figure 39 and
Figure 40, page 53
In Canada, provide clearances required by Natural
Gas and Propane Installation Code – CAN/CSA
B149 1 Use a ULC S636-compliant vent kit
8
52
svf
series
725/850
Figure 39 Sidewall direct vent terminations
x .
x .
6 " m a
6 " m a
i n . / 3
i n . / 3
1 6 " m
1 6 " m
a t i o n
a t i o n
s e p a r
s e p a r
w i t h
w i t h
s f l u s h
s f l u s h
E l b o w
E l b o w
p l a t e
p l a t e
o u t e r
o u t e r
Grade or snow line
Vent Piping Installation
WARNING
!
Use sweep elbows for all vent and air piping. DO
NOT use short-radius elbows for vent or air piping.
Failure to comply can result in severe personal
injury, death, or substantial property damage.
WARNING
!
Use only the vent materials and kits listed in
Table 9, page 34. Failure to comply can result
in severe personal injury, death, or substantial
property damage.
WARNING
!
Every joint on polypropylene vent piping must
include a locking collar. Failure to supply locking
collars can cause vent or air piping leakage,
which can result in severe personal injury, death,
or substantial property damage.
1
Install a vent adapter if needed Follow
instructions from the vent manufacturer
2
Install a reducer from a vent manufacturer if
needed to adapt to the vent size
boiler manual
1
Air elbow
snorkel option
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V E N T
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V E N T
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220085

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