8
W W W . B A L T I M O R E A I R C O I L . C O M . A U
M A R 1 1 3 - 0
Model Number
Operating Level (mm)
measured from the pan (bottom)
VXT-10 TO 135 327mm
VXI-S9, 18, 27, 36 343MM
VXC-S14 to S135 343mm
VXT-150 to 185 394mm
VXI-S50 419mm
VXC-S150 to S205 419mm
VXT-N215 to N535 432mm
VXI-S70, 95, 145, 190, 290 432mm
VXC-S221 to 265 & VXC-S288 to 1010 432mm
VXT-315 to 4800 457mm
VXI-S180, 360 457mm
VXC-S357 to 1360 457mm
VXC-S495 to 1608 356mm
VXI-S144, 215, 288, 430 356mm
Table 2 - Operating Water Level
The water level in the cold water sump will vary as a function of the
system load (evaporation rate), bleed rate, supply water pressure, and
the quantity of water suspended in the tower during pump operation
plus that contained in the water distribution system, external piping,
and any heat exchangers which could drain to the tower sump when
the circulating pump is shut down. Because the typical winter load is
less than the summer load, the winter evaporation rate is frequently
less than the summer evaporation rate. With this reduced evaporation
rate in the winter, the water level in the cold water sump will
increase unless the oat is
readjusted.
Due to these variables the
operating water level should
be checked monthly and the
oat adjusted as necessary
to maintain the desired
operating level. The valve
itself should be inspected
annually for leakage and
the valve seat replaced if
necessary.
Figure 1a - Operating Water Level
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