Archgard 42-DVT40N - Manual (Page 13)

Northfire 42
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2 4 6 8 10 12
12 10 8 6 4 2
FT.
VENTING CHART
VERTICAL HIEGHT
HORIZONTAL LENGTH
Restrictor 2
No Restrictor
Restrictor 1
INSTALLATION INSTRUCTIONS Cont...
VENTING
The appliance will not function without being connected to a proper venting system.
This appliance may only use direct vent system supplied by Archgard, or Simpson
Dura-Vent direct vent systems with Archgard #999-DV-SDA adapter.
NOTE: Minimum vertical rise of 18” is required for a horizontal run of 36” or less. Measured from the top of
the unit to the center of the elbow.
• Chart is for one 90° bend, with ¼” (7 mm)vertical raise minimum per foot of horizontal length.
• For each additional 90° or two 45°, add one foot of vertical height.
• Maximum three 90º bends, or equivalent.
• Minimum 2 ft (610 mm) straight length between bends.
VENTING ABOVE ROOF OF THE HOUSE USING A VERTICAL TERMINATION
Use Simpson Dura-Vent listed direct vent system caps for all vertical vent termination
applications (through the roof).
Please follow the venting instructions as strictly as possible to
obtain the best performance from the appliance.
See page 14 for
restrictor placement
Note: No Installations
are permitted outside
of this range.
VERTICAL HEI
G
HT
Note:
Restrictors are to be used in
vertical vent installations.