2-4
E
LECTRICAL
/ R
EFRIGERATION
P/N 3141959_C
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
System Diagram
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Defrost Mode
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Hot Gas Bypass (FNGSC8A)
REFRIGERATION SYSTEM
FUNCTIONALITY
(Continued)
During defrost mode, the defrost solenoid
valves ( HGSV1 and HGSV2 ) are energized
and held open allowing the gas to be redirected
through each evaporator inlet . The evaporator
is split and circuited for 2 refrigeration circuits .
Defrost cycle is temperature-terminated with
a failsafe that is 45 minutes . Normally only 3
defrost per day are required .
Summary of Contents for FNGSC-A
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