Napoleon 9500-B Series, Руководство по эксплуатации

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W415-1239 / A / 03.21.14
49
IOM
18.2 CALCULATING AIR FLOW
18.3 CONTINUOUS FAN OPERATION
H22.2.1
There are circumstances where it may be desirable to know the air fl ow delivery through the duct system,
such as when estimating the amount of air fl ow available for
air conditioning. This can be done by direct measurement with
electronic or sloped manometers and velometers, or use the
formula in the next column.
H22 2 1
CFM =
Output
1.085 x
∆ T
where:
• CFM is air fl ow in cubic feet per minute;
• ∆ T is the temperature rise; and
• O
utput is the furnace output capacity
from the rating plate
.
H22.3.1
When the thermostat continuous fan (G) switch is on without a call for heat or cooling, the indoor fan is
immediately energized. The fan remains energized as long as the call for fan remains without a call for heat or
cooling. This feature allows continuous circulation of air between calls for heating or cooling.
If a callf or heat (W) occurs during continuous fan, the blower will remain energized, the call for heat overrides
the fan.
If a call for cool (Y) occurs simultaneously with the call for fan (G), the call for cool overrides the call for fan.
TABLE 8 - CONTINUOUS
FAN CFM
Input
K/Btu/hr
X13
Motor
HP
Continuous
Fan (CFM)
030-2 1/3 600
040-2 1/3 600
060-3
1/2
600
080-3* 825
080-4**
3/4
850
100-5 865
120-5 1 930
H12.3.5A
NOTE: * 3 TON, ** 4 TON