SKG4-E Gas Fired Humidifier
Installation Instructions and User Manual
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Stage 7 - Flue Gas Venting Connection
Flue gas venting must conform to local codes and regulations.
Any installation work must be carried out by suitably qualified personnel.
For safe and efficient operation of the SKG4 humidifier, flue gases (product of combustion)
must be evacuated through a dedicated flue gas venting system to the outside air.
Do not vent the SKG4 humidifier into another venting system serving another appliance. The
humidifier must be vented by its own approved/listed flue system.
Any flue gas venting pipes passing through floors, ceilings, and walls must be installed with
proper clearances to combustible materials, and must be fire stopped according to local
codes and regulations.
Use only roof and wall penetration systems recommended by the flue gas venting system
manufacturer.
Install flu
e gas venting systems in accordance with vent manufacturer’s instructions.
Flue gas venting pipe must be free of any restrictions or obstructions. The flue gas venting
pipe diameter must be the same as the SKG4 flue gas connector.
Do not use unlined masonry or concrete chimney as a flue gas venting system.
The flue gas venting system must not extend into, or pass through, any circulation air duct or
plenum.
Installation of the flue gas venting pipes must be as direct as possible, minimizing the number
of turns or elbows, with a maximum of 6 elbows in total.
If flue gas venting pipe length exceeds 6.1m, the exhaust vent pipe must be insulated, in
order to reduce the formation of condensate.
Ensure that the flue connection to the humidifier is air tight. Failure to do this will result in
damage due to moist flue gases condensing.
Flue Gas Venting Specification
The SKG4 humidifier is a fan assisted condensing positive pressure flue gas appliance.
Maximum flue gas temperature: 200
˚C.
Maximum flue gas venting pipe length:
o
30m - 3
m x (total number of 90˚elbow) - 1.5m x (total number of 45˚elbow).
Model
Single Flue Gas Outlet Diameter
SKG4-E0501 to 1001
Ø76mm O.D.
SKG4-E1202 to 2002
Ø100mm O.D.
SKG4-E2503 to 4004
Ø125mm O.D.
Flue gas venting pipe diameter must be same as the SKG4 flue gas connector.
Minimum flue gas venting pipe upward gradient must be 20mm in 1000mm horizontal run or
as per flue gas venting manufacturer’s instructions.
The SKG4 humidifier is a condensing appliance. As such, its high efficiency may cause
condensation in the flue gas venting.
Condensate drip tee must be installed, as per flue gas venting manufacturer’s instructions.
Summary of Contents for SKG4-E Series
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