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SKU: NPE-180S2

Tankless NPE-180S2

Name: Tankless NPE-180S2
Brand: Navien
SKU: NPE-180S2
Availability: InStock

Navien

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HIGH EFFICIENCY CONDENSING TANKLESS WATER HEATER

Field convertible gas system
Ultra condensing efficiency
Dual stainless steel heat exchangers
Low NOx emissions (20ppm)
SCH 40, 2" venting up to 75'
Cascading capable
EZNav multi-line control panel
Built-in HotButton control panel
Common vent up to 12 units

NPE-180S2 premium features and benefits

2" PVC venting up to 75 feet. Low exhaust gas temperatures allow use of PVC (including schedule 40 PVC), CPVC, polypropylene (rigid and flexible) and stainless steel venting saving time and costs.Vent Installation Detector (VID) for added safety.

Dual Venturi for field gas conversions. Dual Venturi system creates better combustion control and turndown ratio.

Dual stainless steel heat exchanger-c-new

Dual stainless steel heat exchangers for added durability.

EZNav™ Multi-line control with built-in intuitive software.

NPE-180S2 QuickFacts

Dimensions

43.9cm W x 69.6cm H x 33.5cm D (17.3" W x 27.4" H x 13.2" D)

Certification Summary

all NPE-2 models are field convertible from NG to LP gas

Product approvals

CSA: Yes
NSF(Standard 5): Yes
Low Lead(<0.25%): Yes
SCAQMD 1146.2(NOx, <20ppm): Yes
AHRI Number: 206368360
Energy star certified: Yes

Efficiency Ratings*

Uniform Energy Factor(UEF): 0.96
MAX l/m(37°C Rise): 16.3 l/m (4.3 GPM)

Annual Energy Consumption* (Residential)

Natural gas(Therms/Year): 177.0
Propane(Liters/Year): 734.4 l (194 gal)
Natural Gas Estimated Operating Cost**: $247
Propane Estimated Operating Cost**: $599

*Based on U.S. Department of Energy (DOE) test procedures.

**Based on a national average natural gas cost of CA$1.40/therm, propane cost of CA$3.09/gallon.

Temperature Rise

Temp Rise	NPE-180S2
19.4 °C (35 °F)	31.8 l/m (8.4 GPM)
22.2 °C (40 °F)	28 l/m (7.4 GPM)
25 °C (45 °F)	24.6 l/m (6.5 GPM)
27.8 °C (50 °F)	22.3 l/m (5.9 GPM)
30.6 °C (55 °F)	20.1 l/m (5.3 GPM)
33.3 °C (60 °F)	18.5 l/m (4.9 GPM)
36.1 °C (65 °F)	17 l/m (4.5 GPM)
38.9 °C (70 °F)	15.9 l/m (4.2 GPM)
41.7 °C (75 °F)	14.8 l/m (3.9 GPM)
44.4 °C (80 °F)	14 l/m (3.7 GPM)
47.2 °C (85 °F)	13.2 l/m (3.5 GPM)
50 °C (90 °F)	12.5 l/m (3.3 GPM)
55.6 °C (100 °F)	11 l/m (2.9 GPM)
61.1 °C (110 °F)	10.2 l/m (2.7 GPM)
66.7 °C (120 °F)	9.5 l/m (2.5 GPM)
72.2 °C (130 °F)	8.7 l/m (2.3 GPM)
77.8 °C (140 °F)	7.9 l/m (2.1 GPM)

DHW Capacity

Model	NPE-180S2
Natural gas	10,000 - 150,000 BTU/h
Propane	10,000 - 150,000 BTU/h

Operating Cost

Navien Tankless	177.0 therms $247*
Other Tankless	228 therms $319
189 Liter Tank	293 therms $409

* Based on Energy Guide cost estimates using $1.40 per therm of natural gas. Cost is in Canadian dollars.

Specifications

Item		NPE-180S2
Heat Capacity (input)	Natural gas	10,000 - 150,000 BTU/h
Heat Capacity (input)	Propane	10,000 - 150,000 BTU/h
Efficiency ratings	UEF (NG & LP)	0.96
Flow rate (DHW)	19°C temp rise	31.8 l/m (8.4 GPM)
	25°C temp rise	24.6 l/m (6.5 GPM)
	37°C temp rise	16.3 l/m (4.3 GPM)
Dimensions		43.9cm W x 69.6cm H x 33.5cm D (17.3" W x 27.4" H x 13.2" D)
Boiler weight		30.8 kg (68 lbs)
Installation type		Indoor or outdoor wall-hung
Ignition		Electronic ignition
Water pressure		1.055-10.545 kg/cm² (15-150 PSI)
Natural gas supply pressure (from source)		3.5 " WC to 10.5 " WC
Propane gas supply pressure (from source)		8 " WC to 13 " WC
Natural gas manifold pressure (min-max)		-0.03 " WC to -0.55 " WC
Propane gas manifold pressure (min-max)		-0.02 " WC to -0.55 " WC
Minimum flow rate		1.893 l/m (0.5 GPM)
Connection sizes	Cold water inlet	3/4" NPT
	Hot water outlet size	3/4" NPT
	Gas inlet	3/4" NPT
Power supply	Main supply	120V AC, 60 Hz
Power supply	Maximum power consumption	200 W (max 2 A), 350 W (max 4 A) with external pump connected
Materials	Casing	Cold rolled carbon steel
Materials	Heat exchangers	Primary heat exchanger: stainless steel Secondary heat exchanger: stainless steel
Venting	Exhaust	2" or 3" PVC, CPVC, approved polypropylene and stainless steel 2" or 3" special gas vent type BH (Class II, A /B/C)
	Intake	2" or 3" PVC, CPVC, approved polypropylene and stainless steel 2" or 3" special gas vent type BH (Class II, A /B/C)
	Vent clearances	0" to combustibles
High elevations		10,100 feet for both NG or LP gas. Please refer to Installation Manual for additional details and instructions.
Safety Devices		Flame rod, APS, ignition operation detector, water temperature high limit switch, exhaust temperature high limit sensor, power surge fuse, burner high limit fuse, vent installation detector (VID)

*Available for NPE-A2 models configured in an optional ComfortFlow® recirculation mode. Energy consumption will increase when the system is configured for recirculation.

Navien reserves the right to change specifications at any time without prior notice.

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