Warning
Follow all installation instructions supplied by the pipe and fitting manufacturer.
The actual vent travel allowance is reduced for fittings as shown in the following tables:
Exhaust / Fittings
EX 400, EX 500
EX 700, EX 850
4-inch rigid pipe
170 ft (max.) each side
Not allowed
6-inch rigid pipe
n/a
120 ft (max.) each side
90° vent elbow
allow 5 ft for each elbow
45° elbow
allow 3 ft for each elbow
PPs 87-90° elbows
allow 5 ft for each elbow
Table 4
Maximum Exhaust Venting Length for EX 400, 500, 700, and 850 models
For example, for an EX 850 using 6 x 90º CPVC vent elbows, the maximum lineal measure
of pipe allowed is 90 feet (120' – (6 x 5' = 30) = 90').
Note
Unused intake travel cannot be added to the exhaust. Unequal intake and exhaust piping
is allowed.
Exhaust venting must slope down towards the boiler with a
pitch of at least 1/4" per foot (PP vent: follow PP
manufacturer requirements for slope), so condensate runs
back towards the trap. Support should be provided for
intake and vent piping, particularly for horizontal runs (follow
local code
Figure 12
Pipe and fitting beveling
23
3.5.4 Vent travel
Содержание EX Series
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Страница 121: ...Appendices Wiring diagrams Figure 73 Controller electrical diagram 119 Appendices...
Страница 122: ...Figure 74 Internal wiring diagram EX 400 and EX 500 models 120 Section Appendices...
Страница 123: ...Figure 75 Internal wiring diagram EX 700 and EX 850 models 121 Wiring diagrams...
Страница 124: ...Figure 76 Sequence of Operation 122 Section Appendices...
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Страница 128: ...126 Boiler parts diagram EX 400 and EX 500...
Страница 132: ...130 Boiler parts diagram EX 700 and EX 850...