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Service Reference Manual SEQUENCE OF OPERATIONS
2-39
SRM-HW/HWC 2/99
The low ambient switch is designed to allow the opera-
tion of the air conditioning unit below the normal operat-
ing range. On units equipped with this switch, sequence
of operation during a cooling call is modified when
outdoor temperatures fall below the normal operating
range.
The switch will interrupt the operation of the outdoor
cooling fan when the temperature of the liquid line
coming in from the outdoor coil falls below 55° F. When
the temperature of the liquid line rises to 95° F, the
switch will close and the outdoor fan will resume opera-
tion.
The low ambient switch does not affect any other facet
of the operation of the unit.
To see simplified and detailed sequences of operation
for the HWC122, 182, 242, 302 models equipped with
the Fenwal Triton 2461D DSI Ignition Control, refer to
pages 2-17 to 2-20.
To see simplified and detailed sequences of operation
for the HWC122, 182, 242, 302 models equipped with
the Fenwal 05-29 Ignition Control, refer to pages 2-27 to
2-30.
HWC122,182, 242, 302
Low Ambient Model
Refer to Figure 2-8