Navien NPE-180A2 Installation Manual page 47

Ref Description
Clearance above grade, veranda,
A
porch, deck, or balcony
Clearance to window or door
B
that may be opened
Clearance to permanently closed
C
window
Vertical clearance to ventilated
soffit located above the terminal
within a horizontal distance of
D
2 ft (61 cm) from the center line
of the terminal.
Clearance to unventilated soffit
E
Clearance to outside corner
F
Clearance to inside corner
G
Clearance to each side of center
line extended above meter/
H
regulator assembly
Clearance to service regulator
I
vent outlet
46 Installing the Water Heater
Inside
corner detail
Legend:
= Vent Terminal
= Air Supply Inlet
= Area where
terminal is not permitted
Canadian installations
1
12 in (30 cm)
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW), 12 in (30 cm)
for appliances > 10,000 Btuh
(3 kW) and ≤ 100,000 Btuh (30
kW), 36 in (91 cm) for appliances
>100,000 Btuh (30 kW)
As specified by the manufacturer* As specified by the manufacturer*
As specified by the manufacturer* As specified by the manufacturer*
As specified by the manufacturer* As specified by the manufacturer*
As specified by the manufacturer* As specified by the manufacturer*
As specified by the manufacturer* As specified by the manufacturer*
3 ft (91 cm) within a height of
15 ft (4.6 m)
3 ft (91 cm)
REGULATOR VENT OUTLET
In the event no regulator
is present, H and I can be
disregarded.
US installations
2
12 in (30 cm)
6 in (15 cm) for appliances ≤
10,000 Btuh (3 kW), 9 in (23 cm)
for appliances > 10,000 Btuh (3
kW) and ≤ 50,000 Btuh (15 kW),
12 in (30 cm) for appliances >
50,000 Btuh (15 kW)
As specified by the manufacturer*
As specified by the manufacturer*