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Previous Name : N-0631S-NG

Min Gas Input (Btu)	25000
Max Gas Input (Btu)	180000
Height (in)	23.6
Width (in)	13.8
Depth (in)	6.7
Weight (lbs)	41
Thermal Efficiency
Energy Factor	0.83
Afue	N/A
Quick-Connect Compatible?	No
Cold Water Connection Size (in)	3/4
Hot Water Connection Size (in)	3/4
Gas Connection Size (in)	3/4
Power Supply	120 VAC (60 Hz)
Current Draw (A)	1.175
Exhaust Vent Diameter Requirements	4"
Exhaust Vent Material Requirements	Category III Stainless Steel
Max Vent Length with 1 elbow	39’
Vent Termination Clearances to Any Building Opening (ft)	Below = 4’, Side = 4’, or Above = 1’
Gas Supply Pressure Range	4 - 10.5" WC
Min Gas Line Size	3/4" up to 30’
Water Pressure Rating (psi)	15-150
Case Clearances (in)	Top = 12", Front = 4", Sides = 2", Back = 0"
Combustion Air Requirements - using Indoor Air	180 in²

Combustion Air Requirements - using Outdoor Air	100 in²
Head Loss at 2 gpm	6.93 ft of head
Cold Connection Height	1.9"
Power Consumption w/out Freeze Prevention	59 Watts
Power Consumption w/Freeze Prevention	141 Watts
Flow Meter Alarm	Yes, with optional remote
Service Reminder	No
Condensate Handling Method?	N/A
Noise Rating (dB)	Less than 60 dB
Tested to UL Computer Controlled Safety Standards	Yes
Flame Sensor	Yes
High Limit Switch	Yes
Lightning Protection	Yes
Overheat Cutoff Fuse	Yes
Temperature Lockout	Yes
Ignition Type	Direct Electronic
Case Material	Durable Steel Casing with Polyester Coating
Color/Finish	Beige
Flue Collar Material	Stainless Steel
Primary Heat Exchanger Material	Copper
Secondary Heat Exchanger Material	N/A
Mounting Type	Wall Hung
Package Contents	Tapping Screws, Power Cord, Owner’s Guide, Warranty, Installation Manual
Water Holding Capacity	0.2 gallons

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