Roberts Gorden DF, Инструкция по установке, эксплуатации и обслуживанию

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DF-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
46
8.10 Common Vertical Venting (Category III)
Requirements:
• Maximum of four heaters can be commonly vented through the roof.
• Heaters must be of the same BTU output.
• Heaters must be controlled by a common thermostat.
• Connections to a common stack must be positioned to avoid direct opposition between streams of
combustion gases.
NOTE:
It is required that all vent pipes and connectors be fastened together with sheet metal screws and sealed with
high temperature silicone sealant approved for at least 550 °F (288 °C) (supplied by others). The installer
must perform a leak test on the complete venting system. A solution of soap and water should be used to
test the venting system.
Note: A continuous section of type B-vent may only be used to
pass through the roof or outside of the building. Vertical venting
(Category III) does not allow the use of type B-vent inside of the
space.