Iii.bunit Dimensions; Iii.cair Supply System; Iii.doperation During Test; Iii.etest Fuel Properties - United States Stove Company 7700 Manual

Client: QC inc.
Project No.
then manually operate to maintain the output at the targeted category 3. The
test load weight is 42.20 Lbs and utilized a 8.7 lb coal bed. The average Btu/hr
output was 37 488. Burn time was 4.78 hours. The kg/hr burn rate was 3.27.
RUN #4October 9th, 2014 : The hand fire wood furnace was set to a category
2 burn rate. The air inlet is maintain fully open at the insertion of the load and
then manually operate to maintain the output at the targeted category 2. The
test load weight is 42.65 Lbs and utilized a 9.67 lb coal bed. The average
Btu/hr output was 24 035. Burn time was 4.78 hours. The kg/hr burn rate was
3.27
III.B.
Overall dimensions are 56 inches deep, 48 inches high and 30 inches wide.
III.C.
Primary Combustion air enters the unit in the upper front and a damper
controlled by a thermostatic fan & limit control position in the plenum. the air
damper driven from fully open to fully close between set point temperature.
minimum air inlet is define by five 0.470" diameter hole and two 0.350"
diameter hole in the primary Damper. refer drawing for all details. In the lower
front of the unit the secondary air inlet is 1inch X 1.5 inch without control. This
air is directed to the Firebox. Combustion products flow through a heat
exchanger system of four 0.875" diameter tube. Combustion products exit
through a 6-in flue collar located at the upper back of the outer enclosure.
III.D. OPERATION DURING TEST
The primary air inlet was manually adjusted to maintain the targeted heat rate.
The inlet and outlet air duct temperature were monitored to determine the
Delta-T. The flow of the air in the duct is monitored by a calibrated pitot tube.
III.E TEST FUEL PROPERTIES
The fuel used was cordwood. The fuel was split cordwood 20-inches long. The
fuel was air dried for two years to average moisture content between 18% and
28% on a dry basis. Cordwood fuel is to be loaded into the firebox in a random
fashion.
III.F. START-UP OPERATION
Each test was started with a clean firebox and the scale zeroed. A fire was
started. During the pretest loads, the combustion-air flow was adjusted to
establish target heat draw. After verification the heat draw could be
UNIT DIMENSIONS
AIR SUPPLY SYSTEM
Date: March 6, 2011
Page 6 of 13