Sullair SRL-2000 - The Air Circuit

SRL Service Manual
Revision 00
July 2007
Page 14 of 56
3.1 The Air Circuit
The SRL is unique in that it’s entire air circuit is combined into a single compact 4-in-1 unit, combining:
• the Air-to-Air Heat Exchanger,
• the Air-to-Refrigerant Heat Exchanger,
• a Slowflow Demister Separator, and
• a Condensate Chamber.
into a single component (patent pending).
This combined component performs the
functions of cooling the incoming air to the
desired temperature (using first the cold
outgoing air, and then the refrigerant), as well
as separating the liquid form the air stream, and
collecting the condensate to drain it from the
system*.
The Air-to-Air and Air-to-refrigerant heat exchangers are an aluminium fin design, which combine high
surface area (and therefore efficient heat transfer) with low pressure drop and minimum corrosion.
The air circuit is insulated with special TSI Thermal Shield Insulation (polystyrene based) offering a
very high thermal retention for even further improved efficiency.
There are three control devices in the Air Circuit
• the Dew Point temperature Sensor,
• the Evaporation temperature Sensor, and
• the Condensate Level Sensor*.
* Not applicable to the SRL-250.
Please note that in models over 1000 cfm, multiple air side heat exchanger assemblies are used in
parallel. For the number of heat exchangers for a given model, refer to Section 2.3.
A
B
C
D
A
ir to Refrigerant
Heat Exchanger
D