Specification - Navien NR-180(A) Operation & Installation Manual

Specifications
Please review these specifications before installation to confirm proper unit selection:
As Navien is dedicated to continuous product improvement, Navien reserves the right to
change specifications and/or design and/or discontinue any model or feature without
prior notice and without incurring obligations.
Item
Natural Gas
Heat Capacity
(Input)
Propane Gas
35°F Rise
Flow Rate
45°F Rise
(DHW)
77°F Rise
Dimensions
Weight NR-A, NP-A
Weight NR, NP
Installation Type
Venting Type
Ignition
Water Pressure (min-max)
Natural Gas Supply Pressure
(from source, Min ~ Max)
Propane Gas Supply Pressure
(from source, Min ~ Max)
Natural Gas Manifold Pressure
(min-max)
Propane Gas Manifold Pressure
(min-max)
Minimum Flow Rate
Cold Water Inlet
Hot Water Outlet
Connection
Sizes
Gas Inlet
Main Supply
Power Supply
Maximum Power
Consumption
Casing
Materials
Heat Exchangers
Exhaust (ø3")
Venting
Intake (ø3")
Vent Clearances
Safety Devices
Accessories
NR-180(A) NR-210(A)
NP-180(A) NP-210(A)
Min: 15,000 Btuh Min: 17,000 Btuh
Max: 150,000 Btuh Max: 180,000 Btuh
Min: 17,000 Btuh
Min: 15,000 Btuh
Max: 150,000 Btuh Max: 180,000 Btuh
8.3 GPM 10.0 GPM
6.5 GPM 7.7 GPM
3.8 GPM 4.5 GPM
W17" x H28"x D14" W17" x H28"x D15"
77 lbs 86 lbs
67 lbs 77 lbs
Indoor / Outdoor Wall-Hung
Forced Draft Direct Vent
Electronic Ignition
15 – 150 PSI
5"WC ~ 10.5" WC
9"WC ~ 13.5" WC
0.4"WC ~ 4.2" WC 0.4" WC ~ 3.5" WC
0.8"WC ~ 7.6" WC
0.8" WC ~ 5.9" WC
0 GPM for "A" models (no minimum flow rate requirement),
0.5 GPM for non-"A" models
3/4" NPT
3/4" NPT
3/4" NPT
120VAC, 60Hz
200W (max 2A)
Cold Rolled Carbon Steel
Primary Heat Exchanger: Stainless Steel
Secondary Heat Exchanger: Stainless Steel
ø3" PVC,CPVC, Polypropylene, ø3" Special Gas Vent Type BH
(Class IIIA/B/C)
ø3" PVC,CPVC, Polypropylene, ø3" Special Gas Vent Type BH
(Class IIIA/B/C),
0" to combustibles
Flame Rod,Thermal Fuse(Overheat Cut Off device)
APS, GPS, Gas-Valve Operation Detector,
Ignition Operation Detector, Water Temperature High Limit Switch,
Exhaust Temperature High Limit Switch
Plumb Easy Valve Set, Condensate Neutralizer,
Ready-Link Communication Cable
NR-240(A)
NP-240(A)
Min: 17,000 Btuh
Max: 199,000 Btuh
Min: 17,000 Btuh
Max: 199,000 Btuh
11 GPM
8.6 GPM
5.0 GPM
W17" x H28" xD15"
86 lbs
77 lbs
8"WC ~ 13.5" WC
0.6" WC ~ 3.7" WC
1.0" WC ~ 5.9" WC
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