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REFRIGERATION
Self Contained Models
BEFORE 12/1/19
SELF CONTAINED
WITH ELECTRONIC CONTROL
SSRSP5052 SSRSP5952
SSRSP7752
Refrigeration R404 Charge
32 OZ
34 OZ
36 OZ
(E3091-2 EXCEL)
AFTER 12/1/19
SELF CONTAINED
WITH ELECTRONIC CONTROL
SSRSP5052 SSRSP5952 SSRSP7752
Refrigeration R449 Charge
32 OZ
34 OZ
36 OZ
The self-contained models are shipped from the factory with a completely operational 404A refrigeration
system (before 12/1/19) or 449A refrigeration (after 12/1/19) and require no modifications or adjustments
upon installation. The case must be installed as per the installation section of this manual to provide proper
condensing air cooling.
The dual pressure control is used as a safety device and is factory set. The pressure control works on a
differential. The low-pressure side is a safety to protect the compressor in the case of refrigerant loss. The
high-pressure side is a safety to protect from system failure causing too high of system pressure.
The high side of the pressure control is factory set to 400psi and is not adjustable. Low side setting
for the R404a and R449a cases are set at 40psi differential for the cutout and 60psi for the cut-in.
Note: The condenser fan runs continuously.
This unit also has a defrost timer that will shut the compressor off a set number of times per day to insure a
full defrost occurs. The compressor will remain off until the either the off time is reached or until the
temperature sensor on the coil reaches a set temperature, whichever happens first.
Remote Models
REMOTE
SSRSP5052 SSRSP5952 SSRSP7752
Refrigeration R449 Charge
CHARGED IN FIELD
Remote Low Press. Switch Cut In
50
Remote Low Press. Switch Cut Out
15
Remote High Press. Switch Cut Out
450 psi
BTU Requirement @90F/20F
5400
6400
7400
(E3091-2 EXCEL)
