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The instructions pertaining to the installation of your pellet heater complies with UL 1482 (R2015) & ULC-S627-2000
standards. This manual describes the installation and operation of the USSC, GW7400 pellet fired heater. This
heater meets the 2020 U.S. Environmental Protection Agency's wood pellet fuel emission limits for wood heaters
sold after May 15, 2020. Under specific test conditions this heater has been shown to deliver heat at rates ranging
from 16,030 to 33,684 Btu/hr. This heater achieved a particulate emissions rate of 0.41 g/hr and an efficiency of
75%.
Combustible:
Colors:
Flue Pipe Diameter:
Flue Pipe Type: (Standard Single Wall):
Minimum Chimney Height:
Dimensions
Overall: Depth x Width x Height:
Door Opening: Width x Height:
Pyroceramic Glass Door: (Viewing) Width x Height:
FUEL CONSIDERATIONS
Your pellet stove is designed and tested with premium grade pellets that comply with Pellet Fuels Institute (PFI)
standards. Minimum of 40 lbs density per cubic ft, 1/4" to 5/16" diameter, length no greater than 1.5", not less
than 8,200 BTU/lb, moisture under 8% by weight, ash under 1% by weight, and salt under 300 parts per million).
Pellets that are soft, contain excessive amounts of loose sawdust, have been, or are wet, will result in reduced
performance.
Store your pellets in a dry place. DO NOT store the fuel within the installation clearances of the unit or within the
space required for refueling and ash removal. Doing so could result in a house fire.
• Hot While In Operation. Keep Children, Clothing And Furniture Away. Contact May Cause Skin Burns.
• Do Not Use Chemicals Or Fluids To Ignite The Fire.
• Do Not Connect To Or Use In Conjunction With Any Air Distribution Ductwork Or System.
• Always Close The Door After The Ignition. Never Operate Heater With Door Left Open (Ajar).
This heater is designed to burn only PFI Premium grade pellets. This appliance can also burn pellets rated as
standard after May 16, 2015. Do not use any type of grate to support the fuel.
DO NOT BURN:
1. Garbage;
2. Lawn clippings or yard waste;
3. Materials containing rubber, including tires;
4. Materials containing plastic;
5. Waste petroleum products, paints or paint thinners,
or asphalt products;
6. Materials containing asbestos;
7. Construction or demolition debris;
8. Railroad ties or pressure-treated wood;
9. Manure or animal remains;
Burning these materials may result in release of toxic fumes or render the heater ineffective and cause smoke.
Introduction
Premium Hardwood Pellets
Black
6" (152.5mm)
Black or Blued Steel 2100°F (650°C)
12' (3.7m)
24.4" X 18.9" X 42.4" (621 mm X 480 mm X 1078 mm)
11.5" X 12.4" (293 mm X 315 mm)
11.7" X 11.4" (298 mm X 290 mm)
10.25" X 10.25" (261 mm X 261 mm)
10.25" X 4.9" (261 mm X 127 mm)
CAUTIONS:
10. Salt water driftwood or other previously salt water
saturated materials;
11. Unseasoned wood; or
12. Paper
particleboard. The prohibition against burning
these materials does not prohibit the use of fire
starters made from paper, cardboard, saw dust,
wax and similar substances for the purpose of
starting a fire in an affected wood heater.
-2-
products,
cardboard,
plywood,
or
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