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·
Vent pipe must be secured with hangers or pipe
straps
·
All horizontal runs must be adequately supported
with hangers or straps to prevent sagging.
Installation as a Category I Appliance
·
The GS series humidifiers have a fan-assisted
combustion which operates with a non-positive
vent static pressure when installed with the
appropriate vent diameter.
·
Category I appliances must be vented vertically
or nearly vertical. (See Figure #7 & #9)
·
This category appliance is restricted to vertical
venting installations with limits placed on
horizontal lengths and vent diameters. Refer to
the tables in local and/or national codes. No
sidewall termination is accepted.
·
Vent piping must be UL or UL/CSA listed type B
or B-W.
Recommended B-Venting Manufacturers
1. Simpson Dura-Vent
2. Selkirk Canada Corporation
3. American Metal Products
4. Metal-Fab Inc.
·
The vent pipe exiting the humidifier is sized for
Category III installations. A field supplied adapter
is required to increase the pipe immediately at
the exit of the humidifier. The vent pipe must be
expanded to the minimum sizes listed below for
each model, increasing as code requires.
GS 100 4” minimum diameter
GS 200 5”
GS 300/400 7”
GS 500/600 8”
·
The termination at the humidifier is a MALE
connection. Standard venting hook-ups require a
female path. It is highly recommended that a
female to female adapter be assembled onto the
humidifier to establish the proper venting
sequence. Consult with the venting manufacturer
for proper hook up.
·
Vent connectors shall not be connected into any
portion of a mechanical draft system operating
under positive pressure.
·
Use only double wall (aluminum inner wall) B
vent. Single wall venting can not be used due to
the increased wet time in the lining. If the vent
connector attaches to a lined masonry chimney,
the chimney must be sized and installed
according to the provisions of the National Fuel
Gas Code or Canadian CAN/CGA.B149
standards.
·
An approved venting manufacturers termination
cap for the stack outlet must be used.
·
The maximum flue temperature is 400 degrees F.
Normal operating range is 360 to 380 degrees F.
·
When the category I installation is selected it may
be commonly vented with other listed gas fire
appliances. Total input rates of all appliances will
determine the vent size the chimney must be
sized and installed according to the provisions of
the National Fuel Gas Code or Canadian
CAN/CGA.B149 standards.
· A maximum of 4 gas appliances may be common
vented on the same floor. Multiple story common
venting is not recommended.
· Refer to the vent manufacturers instructions for
proper clearances to combustibles.
-10-
Female to Femal
e
Adapter
(by others)
Figure #10
Exhaust Connection