Navien NPN Installation & Operation Manual page 41

Metal-Fab, Inc. Venting Components
Refer to the contact information of the
Note
manufacturer if necessary:
Manufacturer: Metal-Fab
●
Tel: 800-835-2830
●
E-mail: info@mtlfab.com
●
Website: www.metal-fabinc.com
●
Item
3CGV36 36" Vent Pipe
3CGV24 24" Vent Pipe
3CGV12 12" Vent Pipe
3CGV6 6" Vent Pipe
3CGVAL Telescopic Vent 21" to 35"
3CGVAL20 Telescopic Vent 13" to 20"
3CGV45L 45 degree Elbow
3CGV90L 90 degree Elbow
3CGVRVT or
Vertical Roof Termination
3CGRVT
3CGVSC Storm Collar
3CGVF-12,
Roof Flashing
3CGVF, 3CGVFT
3CGVPS Support Plate
3CGVTR Trim Ring
3CGVWH1,
Metal Wall Strap
3CGVWS1
3CGVWPK,
Wall Thimble
3CGVWPKS
3CGVRHT or
Horizontal Termination
3CGRHT
Low Profile Horizontal Vent
3CGVPHK3
Termination Kit for up to 6" wall
Low Profile Horizontal Vent
3CGVPHK4
Termination Kit for up to 8" wall
3CGVRLSHK or Standard Horizontal Vent
3CGRLSHK Termination Kit
Appliance Adapter (Required
3CGVRLSV or
to connect unit to Metal Fab
3CGRLSV
venting)
3CGVDS Vertical Drain Section
3CGDS Horizontal Drain Section
3CGVDMA Male to Male Adapter
3CGVDFA Female to Female Adapter
40 Installing the Water Heater
Description
Horizontal Termination
Regions with cold climates will produce more
condensate in the vent system. The condensate
collector should be used in cold climates. If more
than one elbow is used in the vertical section, the
condensate collector must be used. The condensate
collector must also be used in horizontal
terminations if a vertical rise in the vent system
exceeds 5 ft. Slope the vent
towards the termination or upward if using a
condensate collector as illustrated below.
Vertical height
greater than*
5 ft (1.52 m)
[Example of
Termination without
Condensate Collector]
Secure the wall thimble plate to the
Note
vent pipe and the wall by tightening
the provided screws in the left and
right screw holes.
Screw
/ " per foot downward
1
4
2.4" (60 mm)
[Example of
Termination with
Condensate Collector]