Crown Boiler TWB Series, Руководство по установке

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For Buildings of Other than Unusually Tight Construction
1) Determine whether the boiler is to be installed in a confined space - A confined space is defined as having a volume less
than 50 cubic feet per 1000 BTU/hr input of all appliances installed in that space. To determine whether the boiler room is a
confined space:
a. Total the input of all appliances in the boiler room in thousands of BTU/hr. Round the result to the next highest
1000 BTU/hr.
b. Find the volume of the room in cubic feet. The volume of the room in cubic feet is:
Length (ft) x width (ft) x ceiling height (ft)
In calculating the volume of the boiler room, consider the volume of adjoining spaces only if no doors are installed
between them. If doors are installed between the boiler room and an adjoining space, do not consider the volume of
the adjoining space, even if the door is normally left open.
c. Divide the volume of the boiler room by the input in thousands of BTU/hr. If the result is less than 50, the boiler
room is a confined space .
Example:
A TWB100 and a water heater are to be installed in a room measuring 6 ft - 3 in x 7 ft with an 8 ft ceiling. The
water heater has an input of 30000 BTU/hr:
Input of TWB100 = 1.00 Gal/hr x 140000 BTU/Gal = 140000 BTU/hr
Total input in thousands of BTU/hr = (140000 BTU/hr + 30000 BTU/hr)/1000 = 170
Volume of room = 6.25 ft x 7 ft x 8 ft = 350 ft
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350/170 = 2.06. Since 2.06 is less than 50, the boiler room is a confined space.
FIGURE 6.0: BOILER INSTALLED IN CONFINED SPACE, ALL AIR FROM INSIDE