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Dimensions
Specifications
Item
NPE-180A
NPE-210A
NPE-240A
Heat Capacity
(Input)
Natural Gas
15,000-150,000 BTU/H
19,900-180,000 BTU/H
19,900-199,900 BTU/H
Propane Gas
15,000-150,000 BTU/H
19,900-180,000 BTU/H
19,900-199,900 BTU/H
Flow Rate (DHW)
35°F(19°C) Temp Rise
8.4 GPM (32 L/m)
10.1 GPM (38 L/m)
11.2 GPM (42 L/m)
45°F(25°C) Temp Rise
6.5 GPM (25 L/m)
7.8 GPM (30 L/m)
8.7 GPM (33 L/m)
77°F(43°C) Temp Rise
3.8 GPM (14 L/m)
4.6 GPM (17 L/m)
5.1 GPM (19 L/m)
Dimensions
17.3"(W) x 27.4"(H) x 11.4"(D)
17.3"(W) x 27.4"(H) x 13.2"(D)
17.3"(W) x 27.4"(H) x 13.2"(D)
Weight
75 lbs (34kg)
82 lbs (37 kg)
82 lbs (37 kg)
Installation Type
Indoor or Outdoor Wall-Hung
Venting Type
Forced Draft Direct Vent
Ignition
Electronic Ignition
Water Pressure
15-150 PSI
Natural Gas Supply Pressure (from source)
3.5"-10.5" WC
Propane Gas Supply Pressure (from source)
8"-13" WC
Natural Gas Manifold Pressure (min to max)
-0.04" WC to -0.84" WC
-0.04" WC to -0.36" WC
-0.04" WC to -0.58" WC
Propane Gas Manifold Pressure (min to max)
-0.03" WC to -0.50" WC
-0.02" WC to -0.66" WC
-0.02" WC to -0.78" WC
Minimum Flow Rate
0 GPM (0 L/m)
Connection Sizes
Cold Water Inlet
3/4" NPT
Hot Water Outlet
3/4" NPT
Recirculation Inlet
3/4" NPT
Power Supply
Main Supply
120V AC, 60Hz
Maximum Power
Consumption
200W (up to 2 amperes), 350W (up to 4 amperes) with external pump connected
Materials
Casing
Cold Rolled Carbon Steel
Heat Exchangers
Primary Heat Exchanger: Stainless Steel
Secondary Heat Exchanger: Stainless Steel
Venting
Exhaust
2" or 3" PVC, CPVC, Polypropylene
2" or 3" Special Gas Vent Type BH (Class II, A/B/C)
Intake
2" or 3" PVC, CPVC, Polypropylene
2" or 3" Special Gas Vent Type BH (Class II, A/B/C)
Vent Clearances
0" to Combustibles
Safety Devices
Flame Rod, APS, Ignition Operation Detector, Water Temperature High Limit Switch, Exhaust Temperature High Limit
Sensor, Power Surge Fuse
27.4" (695mm)
28.8" (731mm)
2.6" (67mm)
5.1" (130mm)
6.1" (155mm)
0.4" (10mm)
1.5" (38mm)
14.3" (364mm)
2.6" (67mm)
A
B
13.2" (336mm) (NPE-210A/240A)
12" (306mm) (NPE-180A)
2.3"
(60mm)
3.0"
(77mm)
8.3"
(212mm)
17.3" (440mm)
2.4" (61mm)
2.4" (61mm)
C
F
D
G
E
NPE Series Tankless Water Heaters
Specification Sheet
Premium Condensing
Tankless Gas Water Heater
Gas Inlet
3/4" NPT
A
B
C
F
D
G
E
Air Intake
Φ 2"
Exhaust Gas vent
Φ 2"
Hot Water Outlet
Φ 3/4"
Recirculation Inlet
Φ 3/4"
Cold Water Inlet
Φ 3/4"
Gas Inlet
Φ 3/4"
Condensate Outlet
Φ 1/2"
Connection Size
Connection Size
Navien America, Inc
20 Goodyear, Irvine, CA 92618 Ph: (949)420-0420 Fax: (949)420-0430 www.navienamerica.com
Rev. 3/13
