Page 60 – Bulletin 100-50-9.1
6.13 REMOTE MULTIPLE EVAPORATOR WITH CIRCUIT EEPR – CONFIGURATION M
The S3C case controller is capable of controlling and monitoring single temperature, multiple evaporator refrigerated fixtures
installed as a line-up. The case shown in the diagram below is the lead case of the line-up. In this scenario, one S3C case control-
ler is required. The S3C case controller will control all case functions as well as take all the desired sensor inputs and drive the
EEPR. The typical control method is to regulate the average discharge air temperature of all evaporators on the line-up with the
EEPR while allowing the TEVs to control superheat. The EEPR is located in the common suction line. The required liquid line
solenoid (LLS) may be installed as one-per-case or one-per-line-up. In addition, only one case in the line-up (lead case) needs
an EEPR wired to the S3C case controller. Case numbers 2, 3, 4,….n will require their own S3C case controller but will not have an
EEPR connected to them if they share a common suction line with the lead case shown in the diagram below.
To configure the S3C control package for configuration M
shown above, follow these directions:
If the controller has not been factory set, then upon initial
start-up, the controller will be in set-up mode and the screen
will display (for self-contained case).
1. Press the SET button, then use ▲▼ buttons to scroll
to o; press SET. is will congure the controller to
support a remote case.
2. Press the SET button when (Rack Identier)
is displayed. Use the ▲▼ buttons to congure the 4
character Rack Identier. Note: Push
▲
button for
numeric,
▼
for alpha characters. When satised
with each digit, press the SET button to go to the next
digit. Pressing SET multiple times will move to the next
parameter.
3. Press the SET button when ud (Line-up Identier)
is displayed. Use the ▲▼ buttons to congure the 4
character Line-up Identier. Note: Push
▲
button for
numeric,
▼
for alpha characters. When satised
with each digit, press the SET button to go to the next
digit. Pressing SET multiple times will move to the next
parameter.
4. Press the SET button when d (Case Identier)
is displayed. Use the ▲▼ buttons to congure the 4
character Case Identier. Note: Push
▲
button for
numeric,
▼
for alpha characters. When satised
with each digit, press the SET button to go to the next
digit. Pressing SET multiple times will move to the next
parameter.
5. Press the SET button when (Application Type) is
displayed. Use the ▲ button and scroll to (Single
Temperature Case); press SET.
6. Press the SET button when (Local Stepper Valve
Conguration) is displayed. Use ▲ button to scroll to
(Electronic Evaporator Pressure Regulator); press
SET. is is the valve that is attached to the main S3C
Case Controller.
Liquid
Liquid Line
Solenoid
Common Suction
From CASE #n
EEPR (CDS)
CASE
FIGURE 5 - REMOTE MULTIPLE EVAPORATOR WITH CIRCUIT EEPR – CONFIGURATION M