Page 66
– Bulletin 100-50-9.1
6.15 REMOTE MULTIPLE EVAPORATOR WITH 3 EEVS AND CIRCUIT EEPR – CONFIGURATION 0
The S3C case controller is capable of controlling and monitoring single temperature, multiple evaporator refrigerated fix-
tures 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 controller and two S3C valve modules are required. The S3C case controller will control all case functions as well as
take all the desired sensor inputs for one evaporator and drive EEV1. S3C valve module 1 will take all the desired sensor
inputs for the second evaporator as well as drive EEV2. Valve module 2 will take all the desired sensor inputs for the third
evaporator as well as drive both EEV3 and the EEPR. This configuration only supports Discharge Air control. The typical
control method is to regulate the average discharge air temperature of all evaporators on the line-up with a single circuit
EEPR while allowing the EEVs to control superheat. The optional 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 connected to a S3C valve
module. Case numbers 2, 3, 4,...n that have two or three evaporators will require their own S3C case controller and valve
modules 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 O
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.
This will configure the controller to
support a remote case.
2. Press the
SET
button when
(Rack Identifier)
is displayed. Use the
▲▼
buttons to configure the 4
Liquid
Liquid Line
Solenoid
(optional)
Common Suction
From CASE #n
EEPR (CDS)
CASE
EEV 1
EEV 2
EEV 3
FIGURE 8 – REMOTE MULTIPLE EVAPORATOR WITH 3 EEVS AND CIRCUIT EEPR – CONFIGURATION O
