13
D
C
A
B
E
RAIN CAP
RIGHT
“A” CAP
RIGHT
TEE TYPE
RIGHT
WRONG
WRONG
90°
ELBOW
UP or DOWN
VENT SIZING
-
Area must be the same as or greater than the boiler breeching (Smoke Outlet). A barometric damper may be required on
installations with a high draft condition.
FAULTY BOILER BURNER OPERATION
1. If improper vent is suspected, remove pipe at breeching and operate boiler. This will determine if excessive down draft,
blocked or restricted flue, etc. is causing the problem.
2. If using type shown in A above, be sure cap is raised sufficiently above main pipe to allow flue gases to vent unimpeded.
3. A popular type cap is shown in B.
4. The tee is frequently used as shown in C.
5. D and E should not be used due to possible fluctuations in back pressure.
Figure 3b: Vents — Faults & Suggestions
Typical Vents that are used on Forced Draft Boilers, on Low Silhouette Buildings
Summary of Contents for operating and
Page 2: ...2 ...
Page 8: ...8 Section I General Information Figure 1 Dimensional Information ...
Page 21: ...21 Figure 16 Bare Boiler Assembly ...
Page 25: ...25 Figure 22 V9A Series Jacket Assembly Boiler Models V903A thru V912A ...
Page 31: ...31 Figure 26 V9A Series Minimum Piping Parallel Water Boiler ...
Page 32: ...32 Figure 27 V9A Series Minimum Piping Primary Secondary Water Boiler ...
Page 33: ...33 Figure 28 V9A Series Minimum Piping Details Bypass with Blend Pump Water Boiler ...
Page 34: ...34 Figure 29 V9A Series Minimum Piping Primary Secondary with Bypass Water Boiler ...
Page 37: ...37 Figure 32 Minimum Piping Requirements For Gravity Return V9A Series Steam Boilers ...
Page 42: ...42 Figure 37b DHW Generation with Tankless Coils Storage Tank and Destratification Pump ...
Page 43: ...43 Figure 37c DHW Generation with Indirect Water Heater ...
Page 58: ...58 Figure 40 Bare Boiler Assembly ...
Page 62: ...62 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 63: ...63 SERVICE RECORD DATE SERVICE PERFORMED ...
Page 64: ...64 ...
