Navien NPE-180A Quick Installation Manual page 3

Vent Termination Options
Indoor Horizontal Vent Termination
n I a t e k A r i
12" (300mm) min.
Exhaust Gas
Image of Outdoor Vent Cap
Top
Exhaust Gas
Intake Air
Back Side
Side
Front
Bottom
8
7
Maximum Length 150'
2-to-3-inch
reducer
Maximum number
of elbows: 8
• 90˚ elbow =
5 linear feet of venting
• 45˚ elbow = 3 linear feet of venting
36" (900mm) min.
Exhaust
Intake
Maximum Length 60 '
6
5
4
3
2
Maximum number
of elbows: 6
• 90˚ elbow = 8 linear feet of venting
• 45˚ elbow = 4 linear feet of venting
(Optional)
Combustion Air
Vent
12"min.
From any
obstruction
above, below,
left, or right
Combustion Air
Recommended Vent Materials
Locale
PVC Schedule 40
USA
CPVC Schedule 80
Approved Polypropylene
Type BH Special Gas Vent Class IIA (PVC)
Canada* Type BH Special Gas Vent Class IIB (CPVC)
Type BH Special Gas Class IIC (Polypropylene)
*For installation in Canada, field-supplied plastic vent piping must comply with CAN/CGA B149.1
(latest edition) and be certified to the Standard For Type BH Gas Venting Systems, ULC-S636.
Components of this listed system must not be interchanged with other vent systems or unlisted
pipes or fittings. All plastic components and specified primers and glues of the certified vent system
must be from a single system manufacturer and must not be intermixed with another system
manufacturer's parts. The supplied vent connector and vent termination are certified as part of the
water heater.
Switch Function
Pump and
1-3
Recirculation
Display Temperature
4
Unit
5 Well Pump
DHW Storage Tank/
6
Solar System
7 & 8 Lime Alarm
9 & 10 High Altitude
Combustion Air
Maintain 12" min. clearance
above highest antcipated
1" (25mm) min.
snow level or grade.
Vent
Maintain 12" min.
(18" min. for Canada)
Clearance above highest
anticipated snow level.
Maximum of 24" above roof
Combustion Air
Vent
(see below).
Setting
No Recirculation
External Pump Only-External Recirculation
Internal Pump Only-Internal Recirculation
Internal Pump Only-External Recirculation
Internal Pump Only-Intelligent Preheating*
Internal & External Pump-Internal Recirculation
Internal & External Pump-External Recirculation
Internal & External Pump-Intelligent Preheating* 1-ON; 2-ON; 3-ON
Celsius
Fahrenheit
Well Pump Operation
Do Not Use Well Pump
Storage Tank/Solar System Operation
Do Not Use Storage Tank/Solar System
6 Months Alert
12 Months Alert
24 Months Alert
0-4,500 ft
4,500-6,499 ft
6,500-8,499 ft
8,500-10,100 ft
1-OFF; 2-OFF; 3-OFF
1-OFF; 2-OFF; 3-ON
1-ON; 2-OFF; 3-OFF
1-OFF; 2-ON; 3-OFF
1-ON; 2-ON; 3-OFF
1-ON; 2-OFF; 3-ON
1-OFF; 2-ON; 3-ON
4-ON
4-OFF
5-ON
5-OFF
6-ON
6-OFF
7-ON; 8-OFF
7-OFF; 8-ON
7-ON; 8-ON
9-OFF; 10-OFF
9-ON; 10-OFF
9-OFF; 10-ON
9-ON; 10-ON