87
Installing a Common Vent System
Included Items
Common Vent Collar
Kit
Installation Manual
Condensing W
ater Heater
Common Ven
t System
Installation M
anual
For NPE Series
Water Heaters
Certified to AN
SI Z21.10.3 – C
SA 4.3. (Only fo
r U.S. installatio
ns)
Keep this man
ual for future r
eference when
ever maintena
nce or service
is
required.
-
Do not store o
r use gasoline
or other flam
mable vapors
and liquids in
the vicinity o
f this or any o
ther appliance
.
-
WHAT TO DO
IF YOU SMEL
L GAS
●
Do not try to li
ght any applia
nce.
●
Do not touch a
ny electrical sw
itch; do not us
e any phone in
your buildin
g.
●
Immediately c
all your gas su
pplier from a n
eighbor’s pho
ne. Follow the
gas supplier’s
instructions.
●
If you cannot r
each your gas s
upplier, call th
e fire departm
ent.
-
Installation a
nd service m
ust be perform
ed by a qualifi
ed installer, se
rvice agency o
r the gas supp
lier.
-
This entire m
anual must b
e left for the c
onsumer. The
consumer m
ust read and r
efer to this m
anual for prop
er operation a
nd
maintenance
of the comm
on vent syste
m.
-
The installatio
n must confo
rm with local c
odes or, in th
e absence of lo
cal codes, the
National Fuel
Gas Code,
ANSI Z223.1/N
FPA 54.
-
When applica
ble, the install
ation must co
nform with th
e Manufacture
d Home Const
ruction and Sa
fety
Standard, Titl
e 24 CFR, Part
3280, Mobile
Homes.
WARNING
If the informat
ion in these in
structions is n
ot followed e
xactly, a fire o
r explosion m
ay result, cau
sing property
damage, perso
nal
injury, or deat
h.
Ready-Link
communication cable
Screw (4 ea)
VID jumper wire
Specifications
5.9” (150 mm)
1.1” (28 mm)
Part Name
Common Vent Collar Kit
Part No.
30014367A
Material
PP (Polypropylene)
Example of a Typical Installation
(Direct Vent Only)
The following illustration depicts an example of a
common vent system installed for a cascade system
of 1 combi-boiler (NCB-H Model) and 7 Navien water
heaters (NPE Model).
Note
●
The illustration is intended for
reference purposes only.
●
The maximum allowable vent length
of the pipe branch connecting the
boiler to the common vent trunk is
20 feet.
9.2 Navien Common Vent Collar
Kit (Back-draft Damper)
The Navien Common Vent Collar Kit includes a
backdraft damper preventing the flue gases and
cold outside air from entering the boiler when the
combustion fan is off. The kit includes the cascade
cable.
By closing the exhaust vent as soon as the
combustion cycle ends, the Navien Common Vent
Collar Kit retains heat in the system for longer
periods.
Note
When using a common vent in a
cascade system, backflow appliances
are required to prevent exhaust from
entering the building.
Summary of Contents for NCB-190/060H
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