Navien NPE-180A2 Installation Manual page 50

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
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 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)
4 ft (1.2 m) below or to side of
opening; 1 ft (300 mm) above
opening
As specified by the manufacturer*
As specified by the manufacturer*
Installing the Water Heater 49