Roberts Gorden NDUSTRIA NHE Series, Инструкция по установке, эксплуатации и обслуживанию

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NHE-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
50
8.15 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.