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I. General Information
A.
Terminology In This Manual
Boiler:
Refers to the Nature’s Comfort
boiler.
Furnace:
Refers to the existing indoor gas or oil fired unit which heats the air or radiant water
heat for the home.
B.
Clearance to Combustibles Required
Top, Front, Rear and Sides:
36
”
Flooring:
Non-Combustible
C.
Boiler Dimensions & Specifications
Type of fuel:
Only hard, cordwood that is cut & split, seasoned for 1-2 years.
Location:
Outdoor use only.
Electrical Rating:
115 VAC, 5A (15A max when convenience outlet is used), 60 HZ
Min. Circuit Breaker:
15 Amp
Draft Blower:
273 CFM, 115 VAC
Water Pump:
115 VAC, 2A max.
Chimney:
6” inside diameter
NCB-275G
400,000 BTU, 275-gallon water tank, 8,000 sq ft.*
50"x73"x89" tall, 2113 lbs
NCB-325G
460,000 BTU, 325-gallon water tank, 10,000 sq ft.*
50"x85"x89" tall, 2313 lbs
NCB-400G
500,000 BTU, 400-gallon water tank, 12,000 sq ft.*
50"x85"x96" tall, 2613 lbs
*Will heat up to (x)sq ft (This must include all heated areas of home as well
as basement.) with proper installation, properly insulated building and
when properly seasoned hardwood is used (20% moisture content).
Deduct a minimum of 500 sq ft if heating domestic hot water.
Firebox Size
Model
Cu/Ft
Description
Width
Depth Opening
Ash Pan
NCB-275G
23.4cu/ft
oval
30”Wx36”H
42”
27”W x 25.5”H
39” X 11.75”X 4”
NCB-325G
28.5cu/ft
oval
30”Wx36”H
54”
27”W x 25.5”H
39” X 11.75”X 4”
NCB-400G
40.0cu/ft
oval
30”Wx46”H
54”
27”W x 25.5”H
39” X 11.75”X 4”
Steel thickness
Water Jacket
Firebox
NCB-275G, 325G & 400G
7ga. (approx. 3/16”)
¼”
