Hussmann VRL Installation & Operation Manual page 20

E
20
lEctrIcal
REFRIGERATION SYSTEM
FUNCTIONALITY
During defrost mode, the defrost solenoid
valve (HGSV) is energized and held open
allowing the gas to be redirected through the
evaporator inlet. The evaporator is split and
circuited for 2 refrigeration circuits.
Figure C. System Diagram - Defrost Mode - Hot Gas Bypass
(This diagram is applicable for both 1 and 2-door case models)
CONDENSATE PAN
K
PN_3155541_E
/ r
EfrIgEratIon
(Continued)
FILTER
DRIER
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
/ c
ontrollEr
Defrost cycle is temperature-terminated with
a failsafe that is 50 minutes. Normally only 3
defrost per day are required.
CAP TUBE
HGSV
PRESSURE
RSV
SWITCH
CHECK
VALVE
COMPRESSOR
UNLESS OTHERWISE SP
DIMENSIONS ARE IN IN
THI
ANG
PROJE
SHEET 2 OF